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.01 M-2010-04 Chi Nguyen OFFICE OF COMDZUNITY DEVELOPMENT CITY HALL 10300 TORRE AVE VUE • CUPERTINO, CA 95014-3255 C U P E RT 1 N O (408) 777-3308 • FP X(408) 777-3333 • plaiuunQflcupertino.org PLANNING COMM:ISSION STAFF REPORT Agenda Item No. ,- Agenda Date: September 14, 2010 Application: M-2010-04 Applicant and property owner: Chi N;uyen Location: 22810 Mercedes Road (APN :�42-22-106) Application Summary: Modification to a Hillside Exception (EXC-2001-0'� to construct a 2,223 square foot, single family residerice on a substandard lot with a slope greater than 30 percent. RECOMMENDATION Staff recommends that the Planning CoYnmission: 1. Approve the Mitigated Negative Declaration (EA-2010-03); and 2. Approve the modification to a H:llside Exception (M-2010-04) in accordance with the Model Resolution (Attachme�lt 1). PROJECT DATA General Plan Designation: Very Low L�ensity Residential (Foothill Modified 1 /z acre Slope Densi ty) Zoning Designation: Residential Hillside (RHS- 21) Project Consistency with: General Pla n: Yes Zoning: Exception required (building on > 30 % slope and substandard lot size) Adjacent Properties: � Northeast: Undeveloped single-family residential hillside property (zoned RHS-218) Northwest: City-owned water tank facility (zoned BA) South: Religious retreat/Senior living/care facility (zoned BQ) West: same as above East: Single-family residential property (zoned RHS- 21) Environmental Assessment: Mitigated Negative Declaration 1-1 M-2010-04 22810 I�Iercedes Road September 14, 2010 Page 2 BACKGROUND Approval Histor� The Planning Commission originally ap proved a Hillside Exception (EXC-2001-0'� for a 2,216 square foot single-family home c�n September 24, 2001. However, the property was sold prior to commencement of ;.onstruction. The subsequent property owner applied for modifications to the origi�ial approval in 2002. On March 24, 2003, the Planning Commission approved a modification to the Hillside Exception (M-2002-09) to construct a 3,008 square foot single-f�_mily home. Although a building permit was issued in 2004, due to unpermitted wor:c/grading activities, the home construction was placed on hold and the site has been :.eft vacant with an unfinished foundation and retaining walls. The project has sinc � been bought by Mr. Nguyen, the current applicant, who is now seeking permission to modify the previous approval in order to build a new 2,223 square foot home a nd carry out the required hillside remediation work discussed later in this staff report. See the table below for a summary oE the current project data compared with the previous approvals: . Original Previous Current Project Approval Modification : � (M-2010-04) _ EXC-2001-0 M-2002-09 Lot size in s.f. 12,912 oss 11,850 net House size in s.f. 2,216 3,008 2,223 Lot covera e 20 % 27% 25 % Hei ht/ Stories 18' / 2 stories 24' / 3 stories 21' / 2 stories Front setback 22' 39'8" 41'3" Rear setback 32' 21'5" 33'1" West (right) side 10' 14'10" 17'6" setback East (left) side 16' 13'8" 15'6" setback Gradin 774 cu. d. 641 cu. d. 50 cu. d. Parkin 4 onsite, 2 offsite Project Site AnalUsis The project site is bordered to the nortll by a vacant residential hillside property and a City-owned water tank facility; to tr.e south and west by the Marianist religious retreat/assisted living facility; and to the east by a single-family residential home (See Aerial Photo below). The proposed residence would take access from Mercedes Road, a paved public street which is approximai:ely 18 feet wide. 1-2 M-2010-04 22810 Mercedes Road September 14, 2010 Page 3 � ,� �. .; t , .. . __ ` V y � � { 't` f � , 4,. .�,�� . Z , �. . e ��; . , � :� ' � � w.�'�.� �� .; � �'� ' Monta Vista Inf erred Fault � �: � `r.: � * ! r, �� . � . s-�--� . h .. . + � _ .� t ` ...,�� _ � M:..-['�.~. + � � . � '� �� ... . _ . . �°""� ::• - � y, • i�,,, ( Vacant RHS ��* � � �� ' t :� � r .. � � .�1a "� �., �'d��' . ��5�'^'�.�"'M '� 7 . ; � 7t:.�. ` � '1 ��; * � *� s � V 1 1 �. �` �� , � `. �1 � . - � ' Y ��,*�'�• �K;.'�` -b d ,. .� �� ' �� zoned property ;�Y..��.�`:. ,�. � .� ;� ; � ��.� -�' � �� 3 � '� r ;' ' q 4." `•�,�r�;� "'c'4..� 4 . � }- 4 ,. ,� � ��""�� . 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T ,Y� . . r n . • � ' ' �' . .' .1r:;A�1� � . . ' ' i . '^^ 1. ��J1 ^ . Y� J J `� ^ . ,� S•_a - , * a. � . r� t. - _,�y�i�, •:y f.ti,�_ -: . . �..�.. .� � , , , ; . �. e � � � - ... °,o� - '-a �..: ��+- '� , . r � iL. ' �� •• ..� . ^I', ya .'� ..* . �C�� : . i , . � . � : t. ^ .� , � . . . _ < ... } . �:��_rR •'•� � �-.� i. i �!' �.y� 3'.'�rl .`� �+.i . �.�s. ��_��5��..`_ �q�"" '._.. ..y . �.._- . ��'°"�1. �;'..' � � � +t� � � � � 1L ; � ��`+�' I � C"�� - S, •.� : M1 � � �. � . � .. �"C� 'r ' . . �� .� '�� Marianist Assisted Living �� '��" ��" �. " --- . �;,...��. ,' , ` �Y Facility � �'� ,� -, . �� ' � r -: � . � � � r t _ ""''r ?� � � '� �g �i ' •.� - � t:.� ,� R.� '.' f . �i ♦ .�:. � �g�� ar. •� ! . �< . y •�� . y�•'f . � ^� T J .( � y ��.�. � ,� "�1� T '�" 1- '~' 'aJ� �!r� l�: � � � � Y. '�47�'" :f 1 � W J, � ^ 'C F � r r � � �.� � t . ,� � � �. �� n ..� ��. .,s�,�� :.' � � � � � s }: fi � ✓ . . " • ,, r ''� . � .t . . .. -� . � . � �� + . �: , .:-a ,�-'a`f., ;-�'� ,�+e'" - � �. . � . .. , , . . .. .. . . - _ ,. , _ ,.. � , ._ ... _ . _ - — �-�-----.�_�._�.�_ 2006 Aerial Photo of Site Surroundings. -'•- - ___'._ . _... - _ -- —.. -- �o } ` _ ..,,.�� `: �t� ''��.�;, �-�.' .�y d Current Condition .- " _ � ^ .�- �.--�' �.�`�...'��t- � �� "� ..•.4 .. w�nk Y f' 4. �. � � m r . --; --- - -----'". � .,��'�~ - . ,� Illegal Grading _-: -- _- ;�,, - _. �_ . -- - . . X - - -� . .. -,•' _ - . � ` `�3'�`= _ - ..�..:� � 1 '�� . �. As art of the 2003 approval, .,�,� .-..-- p _ -- � o� �� ..�._� __ _ _ .-. _. _ _ , - . _�...: .. " T.� ; approximately 40 percent of the project site -- -:._ � __ �� .. -i = - --�-' . � --_ � _ I �4: �, � � � -,� , ,.. �.,.. � . ._ f , � , . -�__ -. _ � _� � _ . . _. _ .__ was preserved from any construction __ - � "-�'}- �'-�- ' � � " � ' `� �� - � . , ..� -- _ � r� _ _ - ., -.�. activity (see the diagram to the right). . _ �= T�:, �� .- --=�.. _ _ :.. � � �. . �_, � � �� -- _ ..- _. "' ------i--- `>�- :: However, while constructing the �,..-� � - � -- --- - -- �; __ - ..- - � --- _ =,:, `,= foundation elements the previous - I` --�- _ � v - - ' ---�-- � -�� ,� �� x � �.. =�� • ,, ` 7' -. - �- - �� - 1. � .\ 1. contractor illegally graded the lot beyond �� .� "-" �-� � �- ��.�_ �`� ;.�, � . � , - � � - � `. - `� ' �..!--.... _. ' . i r', � = �,• - ----. the boundaries that were approved by the ` � _ � '' � _ ` - - ,,.. � - _ _ � �-- � ' f 1_ ,� 't �. � �, � �'ir�; c ` �•�,' ` , : .`•�. City. This action severely compromised the '^ � '`�; - __ _ _ __ _ ` �;�1� _ � ` � � - � � '�`�-'`�% � � -:� " ,�_� , „j : � _ r l integrity of the hillside by leaving behind �-� �" ' � ��-- - - _-.�� ---__ -; :_: --.- -�'��` - .� `�, _ . •- � � �: �� t i potentially unstable cut slopes in the rear � ��" � , �,` -�� - --- �-- - ----- ---___ --_�' . .: � 1 c -'-`�^ j-^— � �,�`� ��- ' � -'`• �'. r ' � J -: : � . of the property. :_ "�= t'. �. _ ._ _ •.__ :_..��: _ . _ -�. . _ = :� =-=_- .. ., �,,�...--�,-� � S r' � � =' `.- f- 1 � ' � � -� -. . . '.. � .r � �;.� , , ` Illegal Tree Removals - ` - -=. . . � = `��- .:� . 2003 site plan showing red areas that were to be Seven (7) protected Coast Live Oak trees reserved from construction activit . � 1-3 M-2010-04 22810 Mercedes Road September 14, 2010 Page 4 were also removed as a result of the illegal _ ��`` �`"' r * N ,� � � grading. In addition, the majority of the ,�t � � % �: `y � , ��_ � , � ' � . native ve etation was cleared from the -�� ' �;�� `�` g ��;; � . �� t .. , . , � property. r .� .�` � � ` ,� 3 ' ' Ir � x I +� /.'�� .�., 4 :. -� .� �T . . . � f . " � i? Fj S T � ..' � �. �" ' A� i Uninspected Construction � � t ��z�� } � � `�� -�� ` ` �,' � -� � � �� i t r S ,z . � ; +3 _. y ,.. .. The previous contractor constructed two .,� : y.� � '� � , ' '�_,� , l ��b�` � � `; A � - .� i ; - � :,.F . � , � , ,;,,.� _ ,� y ;�,�� (2) six to seven foot high retaining walls �. �, £ t ,`"' ' �; rK if�� ' �„ �� . , , �. � ., � � S�. � � for the driveway towards the northern _ :. ' A �� ' �~ ' �' t �:-. �.� _ j ' :' f p ortion of the lot without obtainin -.�'� ��_ ;� � �" � � � �.. ��.. F •� ` �� ., g , � ��. � �;�� `}jZ. .t„�, " :d 't �f'�.F. I � proper inspections from the City ��' _`��' � =� ~`` y �� p � � �� ' �y„y?�. q!•'— ��. ��'2�" ""'.i YK . j � .� � , ;.i Additionally, the garage pad and walls � r-� -.�" �,: ; ;�:�,�._, :, , , - ;., f; _ �, �,�, , . �- a ,� were partially formed without the benefit _. _-�--- �;� _� -.� � of proper inspections from the City (see '_..=-� �"` _�°�: pictures to the right). The previous property owner foreclosed Uninspected retaining wall. �-...- ""e'TT" ^I'�T.+.'+� T- �" . ��'^� � t.,4 y .. , l .'. . . �, � �:,: '4 ' . _ on the property before resolving the �� ,,� �� `�� `� ,.r illegal grading and tree removals, and � �� t�� `�`�� '� � �. , a `�' . '�,,p��;„;. � `�''� �f: uninspected construction issues. �x �;�.:� _. .= � �'�' � �� .�c.�'3F��"� ��.� s �� ",,�{.: �'�', x'�" �.sw�f% t�'s' r u� �. Emergency Slope Stabilization Measures � ' - � � ;�� .l. -tr "'�. � �6 1 l � �� ~� f ., � . . � .. .T 1 ,-_w.r� �" , M. -. � 1�� ,�, ... J. ' ' Q, . � �' ;� �.i ., �.�' aL,,.- The current property owner, Mr. Nguyen, , � _�, r n� ,.�-� �..�. ��- . � -� t _ ,,._ � ` :7�► �`"` ' � worked with the City after he bought the ;�_ � -s� � ' ��- , � ' �� ` ----- �; property to install two new retaining walls =`'� ` <� "� '� � � : � ��_s `_�� Y � Y .� � ,' ��.. �i . � !, Y� t +, along the upslope (southern) portion of �+:. �� " x��. �� ._ --- 4 �, _ . '� �k '�'�.. � �:� �:�, the property in 2007 (see picture below). "" � _ , � : -, - ,! .- � The retaining walls were an emergency `��`� � � ' � ��. ' , , ��' � .K �� , ��a� , x .;�..� , measure to stabilize the property by the . �,�� ; R. ' ; ' � � ' _ . ,�,.,,� � - :•�r, ; � ,�, : _ previous illegal grading activities. The walls have been reviewed and approved Uninspected garage pad and walls. by the City's geotechnical consultant and . .. , � . Y_,,r ;�, - ax i , � ' ' � ; , k � �� "�r. ♦ _ , �: � � ; . � � Public Works Department. ��, . �,.' � �� ; � ��' , y "ti - r+r. �, .. f k , V T+ �: ;�.i %�r t. � r, �f ! h . .. T , � '{ - {' ..t �� - ��; ' . ' �i• .. � � M1 l � trf �'�!' r:lC. '�y'�,.. �` . � � . . � DISCUSSION f�� , , _�,, �'�;;� ,: � � � �:� �, ,:��-� .. � � n � .� , �. ;. ; � � � �� r r�' ;,�; ; � .+r: v�r. ' � . . } ,�, Susnmarl.� o f Critical Hillside Remediation ;,��" :� `�=• a �'�'' ' ��`�� . , . �.. �`' �:.-��` :+;�,,� Measures ;�� ;.�r, � r y � �: �r= � � �; �� ,` , ;- . , :.� y ,�; � � � � ��'� �A�X�X� '' � �i Geotechnical Considerations -s . � � � °, � � _ �� '§,�, � �� ,.� '�� r � f � �„'' � �:*.'' 1 . � _ .: . ii� fi ' ��{ . �� `� . '• The ro ect eotechnical en ineer, Wa ne � � � ,� �� y� �� ' ' �•- � °, � p l g g Y �. � ��.: { � `� � �� - . Ting and Associates, has provided , �f�` �J � ' � �'` ' � ��-� �; . � ` ` � �� •, • , :s ..,. ,: .,,. supplemental geotechnical design � �, ,i, , ' � ' � . R . � recommendations for the proposed house f �� ^ �r _ ,_,.�� : ��,, ;� , , � , ; ,�, ,a .� `. that include constructing a completely �: ,� �: . �.�� w, � *b � r,�� ""'` ' � '�� ,' � .= ?�• �� ..._.'�:� �. { , :Z$�� ,��. � , ,'��.,:�-. '1�. �'! a� .:..f�.. � �.4. �� 7 �_ _� new foundation system consisting of large Retaining walls on the upslope of the diameter piers embedded 28 feet below property. 1-4 M-2010-04 22810 r�ercedes Road September 14, 2010 Page 5 the ground surface, and a minimum of 20 feet into competent bedrock materials (Attachment 2 and 3). This foundation system will not rely upon the existing foundation elements for support and the existing foundation is to be left in place. The project geotechnical engineer concludes that the existing pier-supported foundation system, if left in place, provides an im��roved stability for the hillside. The project has been reviewed by the City's consulting engineering geologist (John Wallace of Cotton, Shires, and Associates). All of the �ecommendations from the City's consulting engineering geologist have been incorp��rated as conditions of this project. Please see Attachment 4 for details. Grading and Erosion Control No additional significant grading is pro posed. A Public Works Department condition of approval requires approval of an Ero;�ion and Sediment Control Plan along with a Grading Plan prior to grading/excavation. Site grading is not permitted between October 15 and April 15, unless a� �thorized by the Director of Public Works. Additionally, the applicant's grading pl �n and geotechnical report shall have to address the retaining of the hillside to prevent th e deposit of material onto the edge of the street. Driveway Retaining Walls The project geotechnical consultant prc�poses to build new retaining walls against the existing two uninspected driveway retaining walls using drilled piers to a minimum of 20 feet below the lowest adjacent grade or a minimum of 14 feet into the underlying rock, whichever is deeper. The height oE the existing driveway walls will be tapered off giving them a terraced appearance or a fill slope will be constructed to reduce the exposure of the walls. The applicant is proposing to re-face the existing retaining walls with decorative stone veneer to be ccmpatible with the site's natural surroundings. Additionally, climbing vines and shrubs are proposed to screen the retaining walls. A Public Works Department condition �f approval requires the submittal of structural details and calculations for all new wall;; and/or any walls that do not have inspections prior to issuance of building permits. Garage Pad and Walls The project geotechnical consultant pro �oses to remove and replace the existing garage walls (using drilled piers as support) an� � install a drainage system behind it. Appropriate Screening of IZetaining Walls As a condition of the project, all of the existing and new masonry walls (including but not limited to the southern retaining walls, driveway retaining walls, and the pier foundation system of the house) shall ti�e screened by either appropriate stone or wood siding materials or other similar materials/features as deemed appropriate by the Director of Community Development tc� help reduce the visual mass and blend with the surrounding natural environment. 1-5 M-2010-04 22810 P✓Iercedes Road September 14, 2010 Page 6 Architectural Desi�n The proposed residence is about 800 square feet smaller than the three-story home that was approved in 2003. In addition, the project has the appearance of a two-story home that contours with the slope. The px oposed residence is modern and simplistic in appearance and is consistent with the s�: rrounding neighborhood. The rectangular shape of the house is broken up with a cylind� ical entry feature with a down-sloping roof. The main entrance is accessed from the driveway by a semi-circular staircase with metal railings. A modular cable railing system extends along the main level of the house along the perimeter of the front-facing deck. r'wo other decks are proposed at the rear, which will be placed above the existing foundation for the previously approved three-story house. Conformance with RHS Ordinance Design ;tandards The proposed residence meets the design standards of the RHS Ordinance including building and roof offsets on the downl� ill elevation and architectural elements to break up large wall planes on side elevations. The proposed exterior colors are consistent with the RHS Ordinance since they are earth tones which complement its natural st:rroundings and do not exceed maximum light reflectivity value. All exterior lights (in;.luding but not limited to entry, driveway, and wall fixtures) are required to be ow wattage and have appropriate cut off shields/features shall be provided to minimize glare. No exterior high-intensity lighting is proposed. See Attachment 6 for the color and material sheet. As a condition of the project, the final building colors and materials shall be reviewed and approved by the Planning Departm�nt prior to issuance of building permits. Drivewau and On-Street Parkin�pace,� Driveway A pervious asphalt driveway is proposE�d to be constructed on top of an existing graded slope, which is accessed from the north;vestern edge of the property and extends across the lot to the eastern part of the house. There is adequate space for at least two vehicles to be parked on the driveway. On-Street Parking Spaces The City's Parking Ordinance requires i:his lot to provide� two additional parking spaces since there is no existing on-street park:ing. The applicant proposes to provide two on- street parallel parking spaces directly ��cross the site along the north side of Mercedes Road. The applicant will work with tlte Planning Division and the City's consulting arborist to propose a location that will �iot be detrimental to the adjacent Oak trees. The applicant will be required to install per� ious paver or turf block material and enter into a maintenance agreement with the City iinless the Public Works Department determines that site conditions will prevent the inst;�llation of perv_ious material. 1-6 M-2010-04 22810 Pdercedes Road September 14, 2010 Page 7 Tree Protection and Landscapin� In order to satisfy the City's Protected riree Ordinance, the project proposes to plant 13 trees to mitigate the previously removf�d trees. Additionally, the project is required to satisfy all of the recommendations pr �scribed by the City's consulting arborist (see Attachment 5). The applicant is proposi�lg to plant five (5) 24-inch box Western Redbud, six (6) 24-inch box Coast Live Oak, and two (2) 24-inch box Coast Redwood trees, along with various quantities and species of shrubs and vines. The trees, shrubs, and vines were selected by the applicant's landsc,�pe architect based on the criteria of fire safety, drought tolerance, and erosion contrc�l. No further tree removals are proposed in conjunction with the project. All existin�;12 Oak and one Toyon tree(s) will be protected according to the measures recommende�i by the City's consulting arborist. The RHS Ordinance does not requirE� privacy screening, however the applicant is proposing to plant 24" box trees that partially block the cone of vision from the decks and main level windows on the eas and west properties. There is also a dense arrangement of shrubs that may provid e some screening. There are no privacy impacts to the rear property since it is uphill of tlte proposed house. The County of Santa Clara Fire Departrr�ent has also reviewed the proposed landscaping plan for compliance with the City's Wildland-Urban Interface Policy to minimize potential fire hazards. Site Draina�e The construction of the proposed single -family dwelling on a vacant site will result in a slight increase in surface run-off at the site. The Public Works Department believes that the water retention measures on site arE adequate and the slight increase in run-off can be handled by the storm drain syste� n. Prior to issuance of building permits, the applicant will be required to provide hydraulic storm water calculations for the project. Additionally, the applicant will be required to construct adequate storm drainage facilities to retain the difference between the calculated pre- and post-construction runoff (for a 10-year storm). The storm drainage facilities must also direct storm water flows to the public storm drainage syste m. Since a portion of the storm drain sysi em will be within the City's right of way, the design must be constructed per City standards. The applicant is also required to obtain a storm drain easement from the property to the east since drainage will flow to an existing storm drain at the edge of the r eighboring property. Moreover, the project will require utilization of Best Management Practices (BMPs) and comply with the National Pollutant Discharge Elimination Syste m(NPDES), as required by the State Water Resources Control Board. Construction Management Plan A condition has been added to limit d ast emissions from construction. In addition, a comprehensive construction operation plan, indicating equipment staging area and 1-7 M-2010-04 22810 l✓Iercedes Road September 14, 2010 Page 8 methods, site and tree protection mea,;ures must be reviewed and approved by the Planning Division prior to issuance of bizilding permits. Environmental Review Committee (ER(' Review The ERC reviewed the Initial Study on August 19, 2010 and recommended approval of the Mitigated Negative Declaration (Attachment �. The ERC required that, in addition to the mitigation measures contained in the Initial Study, that the City's consulting engineering geologist's recommenda be placed verbatim in the Planning Cominission resolution. Prepared by: George Schroeder, In#erirr. Assistant Planner � Reviewed by: Approved by: i�� T r ao Aarti Shrivastava City Planner Community Development Director ATTACHMENTS Attachment 1 Model Resolutic n Attachment 2 Geotechnical In��estigation by Wayne Ting and Associates dated August 10, 2007 Attachment 3 Supplemental G �otechnical Investigation by Wayne Ting and Associates datecl December 28, 2009 Attachment 4 Geologic and GE�otechnical Review by Cotton, Shires, and Associates, Inc. �iated July 27, 2010 Attachment 5 Arbor Resource:: arborist's report dated February 11, 2010 Attachment 6 Color and mater ial sheet Attachment 7 Initial Study dated August 19, 2010 G: � Planning � PDREPORT � pc M reports \ 2010 � M-2010-04.doc 1-8 Attachment 1 M-2010-04 CITY OF CUPERTINO 10300 T� �rre Avenue Cupertino, (�alifornia 95014 RESOL UTION NO. OF THE PLANNING COMMIS� ION OF THE CITY OF CUPERTINO APPROVING A MODIFICATION TO A HILLS] DE EXCEPTION (EXC-2001-0� TO CONSTRUCT A 2,223 SQUARE FOOT, SINGLE-FAMILY RESID ENCE ON A SUBSTANDARD LOT WITH A SLOPE GREATER THAN 30 PERCENT LOCATED AT 22810 MERCEDES ROAD (APN 342-22-106) SECTION I: PROTECT DESCRIP'TION Application No.: M-2010-04 Applicant: Chi Nguyen Location: 22810 Mercedes Road (AP:v 342-22-106) SECTION II: FINDINGS FOR EXCEPTION WHEREAS, the Planning Commission of the Ciiy of Cupertino received an application for a Hillside Exception, as described on Section II of this Resolution; and WHEREAS, the necessary notices have been gi��en in accordance with the Procedural Ordinance of the City of Cupertino, and the Planning Comm ission has held one or more Public Hearings on this matter; and WHEREAS, the applicant has met the burden oE proof required to support this application, and has satisfied the following requirements: 1. The proposed development will not ��e injurious to property or unprovements in the area nor be detrimental to the public healtl and safety. 2. The proposed development will n��t create a hazardous condition for pedestrian or vehicular traffic. 3. The proposed development has leg al access to public streets and public services are available to serve the development. 4. The proposed development requires an exception, which involves the least modification of, or deviation from, the developme nt regulations prescribed in this chapter necessary to accomplish a reasonable use of the p� rcel. 5. All alternative locations for development on the parcel have been considered and have been found to create greater environmental impacts than the location of the proposed development. 6. The proposed development does not consist of structures on or near known geological or environmental hazards that have bE en determined by expert testimony to be unsafe or hazardous to structures or persons residing therein. 1-9 Resolution No. � M- 2010-04 September 14, 2010 Page-2- 7. The proposed development includes grading and drainage plans that will ensure that erosion and scarring of the hillsides c�aused by necessary construction of the housing site and improvements will be minimized 8. The proposed development does nc►t consist of structures which would disrupt the natural silhouette of ridgelines as vie wed from established vantages points on the valley floor. 9. The proposed development consists c�f structures incorporating designs, colors, materials, and outdoor lighting which blend w ith the natural hillside environment and which are designed in such a manner as to reduce the effective visible mass, including building height, as much as possible without c��eating other negative environmental impacts. 10. The proposed development is locate�i on the parcel as far as possible from public open space preserves or parks (if visible iherefrom), riparian corridors, and wildlife habitats unless such location will create other, more negative environmental impacts. 11. The proposed development includes a landscape plan which retains as many specimen trees as possible, which utilizes d rought-tolerant native plants and ground covers consistent with nearby vegetation, an�i which rr�n;mi�es lawn areas. 12. The proposed development is otherv� ise consistent with the City's General Plan and with the purposes of this chapter as descri��ed in Section 19.40.010. NOW, THEREFORE, BE IT RESOLVED: That after careful consideration of maps, facts, e;:hibits; testimony and other evidence submitted in this matter, the application for a Modification to a Hillside Exception are hereby recommended for approval, subject to the conditions which are enumerated in this Resolution beginning on Page 2 thereof; and That the subconclusions upon which the find�ngs and conditions specified in this resolution are based and contained in the public hearing recor d concerning Application No. M-2010-04 as set forth in the Minutes of the P1annulg Conunission Me �ting of September 14, 2010, and are incorporated by reference though fully set forth herein. SECTION III: CONDITIONS ADMINISTERED E Y THE COMMUNITY DEVELOPMENT DEPT. 1. APPROVED EXHIBITS The approval is based on the plan set e� ltitled "New Nguyen-Le Residence, 22810 Mercedes Road, Cupertino, CA 95014, APN: 342-?2-044" consisting of 11 pages dated September 14, 2010 and a color and material sheet wit 1 an unspecified date except as may be amended by the conditions contained in this Resolutic�n. 2. RETAINING WALL DESIGN The Director of Public Works and DirE�ctor of Community Development shall review and approve the final retaining wall plans �nd exterior materials prior to issuance of building permits. All of the existing and new ma� onry walls (including but not limited to the southern retaining walls, driveway retaining wall s, and pier foundation system of the house) shall be screened by either appropriate stoY�e or wood siding materials or other similar 1-10 Resolution No. M-2010-04 September 14, 2010 Page-3- materials/features as deemed appropri<<te by the Director of Community Development to help reduce the visual mass and blend w� th the surrounding natural environment. 3. MODIFICATIONS TO APPROVED EXT�:RIOR COLORS AND MATERIALS Any proposals to modify the approved exterior colors and materials shall be subject to review and approval by the Director of Conununity Development prior to installation and/or application. The modifications shall munic the character and design intent of the originally approved materials and shall be compatil �le with the site's natural surroundings. 4. GEOLOGIC AND GEOTECHNIC REVIE W The project shall incorporate all recommEndations set forth in the geotechnical investigation prepared for the development by Wayne Ting & Associates, Inc., dated August 10, 2007 and December 28, 2009. In addition, the project shall incorporatE� all the following recommendations set forth in the geologic and geotechnical peer review conducted by Cotton, Shires and Associates, Inc., dated Ju�y 2�, 2010: a) Prior to issuance of building p��rmits, structural plans shall be generated for the proposed residence that incorpor,�tes the recommendations of the project geotechnical engineer. b) Prior to issuance of building pE rmits, the applicant's geotechnical consultant shall review and approve all geotec]ulical aspects of the development plans (i.e. site preparation and grading, site drainage improvements and design parameters for foundatiorfs and retaining walls) to ensure that their recommendations have been properly incorporated. The struc:tural plans and geotechnical plan review shall be submitted to the City and review��d by the City staff and City Geotechnical Consultant prior to approval of the building }�ermit application. c) Prior to final (as-built) project a pproval, the geologic and geotechnical consultants shall inspect, test, and approve all geologic and geotechnical aspects of the project construction. The inspections sh all include, but not necessarily be lunited to: site preparation and grading, site s�irface and subsurface drainage improvements and excavations for foundations and retaining walls prior to the placement of steel and concrete. The project geologist shall inspect all pier excavations to assure that adversely oriented planes of weakness are not encountered, and that competent earth materials are encountered. The rE sults of these inspections and the as-built conditions of the project shall be describE�d by the geotechnical consultant in a letter and submitted to the City Engineer fo:� review prior to final project approval. 5. ON-STREET PARKING SPACES AND I 'ROTECTION OF ADTACENT TREES The applicant shall provide paving to �ccommodate two parallel parking spaces along the north side of Mercedes Road. The o: i-street parking spaces, garage pad, driveway and retaining walls shall be constructed pri��r to begulning construction on the project and shall be used as a staging area during constr,zction. The road/parking area in the right-of-way in front of the applicant's lot shall be repa ired in accordance to Public Works' standards in the event of damage. The applicant shall retain the City's con �ulting arborist to survey the locations of the adjacent Oak trees in relation to the proposed p��rking area and recommend protective measures that ' —11 Resolution No. M��2010-04 September 14, 2010 Page-4- shall be incorporated into the constructi �n plans. The final location of the parking area shall be reviewed and approved by the Direc tor of Community Development prior to issuance of building permits. The applicant shall install pervious pavE�r or turf block material in the on-street parking area and enter into a maintenance agreement with the City, unless the Director of Public Works determines that pervious pavers or tux f blocks are not an acceptable material for the site conditions. In such case, the applicant shall install a material that conforms to the Public Works Department's standards. 6. TREE PLANTING The applicant shall plant a minimum �f (13) 24-inch box size trees onsite prior to final occupancy in accordance with the recc mmendations in Arbor Resources arborist's report dated February 11, 2010. The final tr�e species shall be approved by the Director of Community Development prior to issuance of building permits. The trees shall be double-staked with rt�bber tree ties (may not be necessary for multi-stem trees) with no cross brace. All forms oE irrigation shall be automatic drip or soaker hose system placed on the soil surface and not in a sleeve. Prior to installation, the trees shall be : nspected and selected at the nursery by either the project landscape architect or the Cih%s consulting arborist for suitable structures and acceptable lateral root growth. 7. TREE PROTECTION / TREE PROTECTIC �N BOND The applicant shall preserve and maini ain the existing 13 trees onsite according to Arbor Resources arborist report's recommenda tions in sections 4.0, 5.1, and 5.2 dated February 11, 2010. The applicant shall retain the City's co�isulting arborist to prepare two review letters to be submitted to the Director of Communifi� Development. The first letter shall confirm that all tree protection measures are in place pric�r to building permit issuance. The second letter shall indicate the implementation of the prot� �ction measures during construction and the overall status of the trees prior to final occupanc,�. A bond or other financial instrument in the amount of $10,000 shall be submitted to ensure tree protection. The bond may be released following receipt of the aforementioned second letter indicating that the trees have beeii adequately protected during development, and are expected to survive. 8. TREE COVENANT The property owner shall record a co venant on this property to inform future property owners of the tree protection measures and requirements. The precise language will be subject to approval by the Director of Community Development. Proof of recordation must be submitted to the Community Develo� ment Department prior to final occupancy of the residence. 9. REMEDIATION MEASURES FOR TREE IMPACTS Prior to issuance of building permits, the following shall be performed by an ISA-certified arborist for the existing trees onsite; the results of which shall be provided in letter or report form to the Director of Community DevE lopment: ' —12 Resolution No. M-2010-04 September 14, 2010 Page-5- a) Soil shall be manually cleared, u sing hand tools only, 12 to 24 inches from the root collar of each inventoried Oak treE�. b) Soil fill shall also be removed to expose natural grade where withixi a minimum distance from a tree's trunk of three times its diameter. This work shall also be manually performed with care tak en to avoid excavating into the natural grade. c) Any root or other damage found that requires remediation shall be attended to. d) Water shall be supplied to the roc t zones of the existing trees (as specified in section 5.2 of Arbor Resources arborist's repc rt dated February 11, 2010) during the dry season. 10. DRIVEWAY CONSTRUCTION IN REL�ITION TO TREE #2 The following measures shall be taken t� � avoid potential impacts from the driveway on tree #2, as identified on the landscape plan: a) If necessary, a drystack retaining wall shall be established along the driveway's edge to maintain fill away from the trunk, b) The construction of the driveway shall not require digging into or the direct compaction of previous natural grade (foot-tamping is acceptable). Tensar BX Geogrid could potentially be used. The geogrid shall be established before demolition and remain in place until the driveway is constnzcted. c) The section of the driveway wit hin 12 feet from tree #2's trunk shall be permeable, including base materials. 11. TWO YEAR FOLLOW-UP VISIT BY AR aORIST The property owner shall retain the Cih%s consulting arborist to make a site visit two years after the date of the aforementioned secc �nd arborist letter to further reevaluate the impacted trees and assess the likelihood that they can perform for the long term. 12. UNDERGROUND UTILITY LINES IN I.ELATION TO TREE PROTECTION ZONES (TPZ) Any new underground utility and servic�e shall be established beyond a tree's tree protective zone (TPZ). The TPZ shall be regardec_ as the unpaved ground (existing or approved for construction) within a distance from its fi•unk (closest edge) of seven times its diameter. Additionally, all existing, unused lines cr pipes within a TPZ shall be abandoned and cut off at existing soil grade. 13. MODIFICATIONS TO LANDSCAPING AND IRRIGATION PLANS Any future proposals by the property owner to modify the approved landscaping and irrigation plans shall be subject to the ��eview and approval of the Director of Community Development. The modified plans shall also be forwarded to the City's consulting arborist, consulting engineering geologist, and thE� Santa Clara County Fire Department for review. 14. SOIL ANALYSIS REPORT A soils analysis report shall document the various characteristics of the soil (e.g. texture, infiltration rate, pH, soluble salt co ntent, percent organic matter, etc) and provide recommendations for amendments as �.ppropriate to optimize the productivity and water efficiency of the soil. The soil analysis report shall be made a �ailable to the professionals preparing the landscape and irrigation design plans in a timely xnanner either before or during the design process. A 1-13 Resolution No. M-2010-04 September 14, 2010 Page-6- copy of the soils analysis report sh;ill be submitted to the Director of Community Development as part of the landscape do�:umentation package. 15. TURF RESTRICTION No turf shall be installed on the property. 'Turf' is generally defined as a ground cover surface consisting of non-native grass species tha t is customarily mowed. Annual bluegrass, Kentucky bluegrass, perennial ryegrass, red fescu e, and tall fescue are examples of cool-season turf grasses. Bermuda grass, Kikuyu grass, s� �ashore paspalum, St. Augustine grass, zoysia grass, and buffalo grass are warm-season turf grasses. 16. LANDSCAPE INSTALLATION REPOR T A landscape installation audit shall be c onducted by a certified landscape professional after the landscaping and irrigation system ]iave been installed. The findings of the assessment shall be consolidated into a landscape in: tallation report. The landscape installation report shall in;.lude, but is not limited to: inspection to confirm that the landscaping and irrigation system ar�� installed as specified in the landscape and irrigation design plan, system tune-up, system test with distribution uniformity, reporting overspray or run-off that causes overland flow, and pxeparation of an irrigation schedule. The landscape installation report shall include the following statement: "The landscape and irrigation system have been installed as specified in the landscape and irrigation design plan and complies with the criteria of the ordinance and the permit." 17. LANDSCAPE MAINTENANCE AGREIiMENT Prior to final inspections and final occt_pancy, the owner of the property shall enter into a formal written landscape agreement w ith the City. The City shall record this agreement against the property or properties invol��ed with the County of Santa Clara Recorder's Office and it shall be binding on all subse� uent owners of the land served by the proposed landscape. The landscape maintenance agreemeni shall require that the installed landscape not be modified and that maintenance activi ties not alter the level of water efficiency of the landscape from its original design, unles � approved by the City prior to the commencement of the proposed modification or maintenan�=e activity. 18. LANDSCAPE AND IRRIGATION MAI VTENANCE A maintenance schedule shall be estab: ished and submitted to the Director of Community Development or his/her designee, eith��r with the landscape application package, with the landscape installation report, or any timE� before the landscape installation report is submitted. a) Schedules should take into acccunt water requirements for the plant establishment period and water requirements fc�r established landscapes. b) Maintenance shall include, but not be limited to the following: routine inspection; pressure testing, adjustment an � repair of the irrigation system; aerating and de- thatching turf areas; replenishiilg mulch; fertilizing; pruning; replanting of failed plants; weeding; pest control; ancl removing obstructions to emission devices. c) Failed plants shall be replaced �vith the same or functionally equivalent plants that may be size-adjusted as appropr:.ate for the stage of growth of the overall installation. Failing plants shall either be replaced or be revived through appropriate adjustments 1-14 Resolution No. N: 2010-04 September 14, 2010 Page-7- in water, nutrients, pest control or other factors as recommended by a landscaping professional. 19. CONSTRUCTION MANAGEMENT PL AN The applicant/owner shall submit a construction management plan to the Director of Community Development for review axid approval prior to issuance of building permits or the commencement of any grading ac tivities. The Construction Management Plan shall include, but not be lixnited to, the following measures to minim;�e impacts of construction upon adjacent sensitive land uses: a) Clearly delineate the limits of development and all slopes outside of the actual limits of construction should remain in their natural condition and not used for staging areas. b) Discuss construction-staging me hods. The construction of the parking area on the north side of Mercedes Road shot�ld be considered for use as a primary staging area. c) 1?emonstrate that emergency acc� �ss along Mercedes road shall not be impeded at any time. d) Early and frequent notification ar.d communication with the neighborhood of the construciion activities. e) Prohibit unnecessary idling of internal combustion engines. fl Designate a"noise disturbance cc ordinator" who would be responsible for responding to any local complaints about construction noise. The disturbance coordinator would determine the cause of the noise complaints (e.g., beginning work too early, bad muffler, etc.) and institute reason,�ble measures warranted to correct the problem. A telephone number for the disturb �nce coordinator would be conspicuously posted at the construction site. g) The plan shall demonstrate that e mergency access along Mercedes Road shall not be impeded at any time. h) The contractor shall use "new tec:lnology" power construction equipment with state- of-the-art noise shielding and muEfling devices. All internal combustion engines used on the project site shall be equipped with adequate mufflers and shall be in good mechanical condition to �n;m;�,� noise created by faulty or poor maintained engines or other components. i) Locate stationary noise generatin;; equipment as far as possible from sensitive receptors, such as residential use� . The applicant shall schedule a pre-const �uction meeting with the Planning Division, Building Division, and Public Works Departme�it, prior to commencement of any grading and/or building activities, to discuss the constr� zction management plan and conditions of approval contained in this resolution. 20. GRADING AND CONSTRUCTION HC �URS All grading activities shall be limited t�� the dry season (April 15 to October 15). Grading hours shall be limited to Monday t�irough Friday, 7 a.m. to 8 p.m. Grading, street construction, demolition or undergroun�i utility work shall not occur on Saturdays, Sundays and holidays, and during the nighttir�ie period as defined in Section 10.48.053(b) of the Municipal Code. Construction activities shall be 1'united to Monday through Friday, 7 a.m. to ' —15 Resolution No. M-2010-04 September 14, 2010 Page-8- 8 p.m. and Saturday and Sunday, 9 a.m. to 6 p.m. Construction activities are not allowed on holidays. The developer shall be respon�ible for educating all contractors and subcontractors of said construction restrictions. Rules and regulation pertauling to all construction activities and limitations identified in this permi :, along with the name and telephone number of a developer appointed disturbance coordi�ator, shall be posted in a prominent location at the entrance to the job site. 21. CONSTRUCTION PRACTICES A garbage/ debris container shall be plac ed on the site to store debris and the project site shall be cleared of debris at the end of every �ay during project construction. The container shall be emptied regularly such that no garbz ge is visible over the rim of the container. Only one portable toilet shall be permitted on the construction site. The portable toilet shall be placed on the project site and in the least visibl� location from Mercedes Road, subject to review by the Building Official. T'he portable toi1E t shall be allowed only during the period of project construction and shall be removed imme 3iately after completion of construction. 22. DUST CONTROL T'he following construction practices sha] 1 be implemented during all phases of construction for the proposed project to prevent visibl� dust emissions from leaving the site: a) Water all active construction area � at least twice daily and more often during windy periods to prevent visible dust frc�m leaving the site; active areas adjacent to windy periods; active areas adjacent to e�cisting land uses shall be kept damp at all times, or shall be treated with non-toxic sta bilizers or dust palliatives. b) Cover all trucks hauling soil, sancl, and other loose materials or require all trucks to maintain at least 2 feet of freeboa� d; c) Pave, apply water at least three tines daily, or apply (non-toxic) soil stabilizers on all unpaved access roads, parking ar �as and staging areas at construction sites. d) Sweep streets daily, or more ofter. if necessary (preferably with water sweepers) if visible soil material is carried ont�� adjacent public streets. e) The applicant shall incorporate th e City's construction best management practices into the building permit plan set. 23. CONFIRMATION OF PROPERTY LINF; SURVEY A licensed civil engineer shall confirx�i the location of property lines prior to issuance of building permits. 24. RECORDATION OF CONDITIONS OF APPROVAL The conditions of approval for the projE�ct shall be recorded prior to final occupancy in order to alert future property owners to the lunitations of the site. 25. NOTICE OF FEES, DEDICATIONS, RE��ERVATIONS OR OTHER EXACTIONS The Conditions of Project Approval s��t forth herein may include certain fees, dedication requirements, reservation requirements, and other exactions. Pursuant to Government Code Section 66020(d) (1), these Conditions constitute written notice of a statement of the amount of such fees, ancl a description of the dE�dications, reservations, and other exactions. You are hereby further notified that the 90-day �pproval period in which you may protest these fees, �I -16 Resolution No. M-2010-04 September 14, 2010 Page-9- dedications, reservations, and other ��xactions, pursuant to Government Code Section 66020(a), has begun. If you fail to file a protest within this 90-day period complying with all of the requirements of Section 66020, yc�u will be legally barred from later challenging such exactions. SECTION IV: CONDITIONS ADMINISTERED � Y THE PUBLIC WORKS DEPARTMENT 26. STREET WIDENING Street widening, improvements and declications shall be provided in accordance with City Standards and specifications and as rE quired by the City Engineer. The applicant shall construct a 20-foot wide street section �rom property line out towards the street per City Standards and Specifications. 27. CURB AND GUTTER IMPROVEMENT� Curbs and gutters, sidewalks and relat �d structures shall be installed in accordance with grades and standards as specified by the ��ity Engineer. 28. STREET LIGHTING INSTALLATION Street lighting shall be installed and sh �11 be as approved by the City Engineer. Lighting fixtures shall be positioned so as to prec lude glare and other forms of visual interference to adjoining properties, and shall be no higler than the maxunum height permitted by the zone in which the site is located. 29. FIRE HYDRANT Fire hydrants shall be located as required by the City. 30. TRAFFIC SIGNS Traffic control signs shall be placed at loc�tions specified by the City. 31. STREET TREES Street trees shall be planted within the Pt�blic Right of Way and shall be of a type approved by the City in accordance with Ordinance N� �.125. 32. GRADING Grading shall be as approved and requu ed by the City Engineer in accordance with Chapter 16.08 of the Cupertino Municipal Code. 401 Certifications and 404 permits maybe required. Please contact Army Corp of Engineer� and/ or Regional Water Quality Control Board as appropriate. Provide a grading plan on a topograp: uc survey that shows existing and proposed wall heights, drainage improvements, gradinl; contours, spot elevations, finished floor elevations, slopes and earthwork quantities. Provide structural details and calculations for all new walls and/or any walls that do not have inspections. The developer shall not perform ar.y grading/excavation unless the Public Works Department has approved an Erosion an3 Sediment Control Plan along with a Grading Plan. A work schedule shall be provided to the City prior to receiving a grading permit. Site grading is not permitted between Octobf�r 15 and Apri115, unless authorized by the Director of Public Works. 1-17 Resolution No. M-2010-04 September 14, 2010 Page-10- The applicant's grading plan and geotech nical report shall address the retaining of the hillside to prevent the deposit of material onto th� � edge of the street. 33. DRAINAGE Development shall be served by on site storm drainage facilities connected to the City storm drainage system. The developer shall provide hydraulic stc�rm water calculations for the project. The developer will be required to construct adequate stcrm drainage facilities to retain the difference between the calculated pre- and post-con �truction runoff (for a 10-year storm). The storm facilities must also direct storm water flo� vs to the public storm drainage system. Since a portion of the storm drain systern will be within the City's Right of Way, the design must be constructed per City Standards. The applicant shall attain a storm drain easement from the neighboring property prior to is �uance of a Grading Permit. 34. FIRE PROTECTION Fire sprinklers shall be installed in any nE�w construction to the approval of the City. 35. UNDERGROUND UTILITIES The developer shall comply with the re �uirements of the Underground Utilities Ordinance No. 331 and other related Ordinances �►nd regulations of the City of Cupertino, and shall coordinate with affected utility provider:; for installation of underground utility devices. The developer shall submit detailed plans s]towing utility underground provisions. Said plans shall be subject to prior approval of the aifected Utility provider and the City Engineer. 36. IMPROVEMENT AGREEMENT The project developer shall enter into a development agreement with the City of Cupertino providing for payment of fees, includu�g but not limited to checking and inspection fees, storm drain fees, park dedication fee:� and fees for under grounding of utilities. Said agreement shall be executed prior to issu�ince of construction permits. Fees: a. Checking & Inspection Fees: $ 5% of Site Improvement Cost or $2,468.00 minimum b. Grading Permit: $ 6% of Site Improvement Cost or $2,217.00 minimum c. Development Maintenance Deposit: $1,000.00 d. Storm Drainage Fee: N/A - Paid 9/20/03 e. Power Cost: N/A f. Map Checking Fees: N/ A g. Park Fees: N/A - Paid 9/26/03 Bonds: a. Faithful Performance Bond:1(i0% of Off-site and On-site Improvements b. Labor & Material Bond:100% of Off-site and On-site Improvements c. On-site Grading Bond:100 % c f site improvements. The fees described above are imposed t►ased upon the current fee schedule adopted by the City Council. However, the fees imposed herein may be modified at the time of recordation of a final map or issuance of a building pe rmit in the event of said change or changes, the fees changed at that time will reflect the then current fee schedule. ' -18 Resolution No. M- 2010-04 September 14, 2010 Page-11- 37. TRANSFORMERS Electrical transformers, telephone vault� and similar above ground equipment enclosures shall be screened with fencing and laitdscaping or located underground such that said equipment is not visible from public stree t areas. 38. DEDICATION OF WATERLINES The developer shall dedicate to the City all waterlines and appurtenances installed to City Standards and shall reach an agreement with San Jose Water for water service to the subject development. 39. BEST MANAGEMENT PRACTICES Utilize Best Management Practices (BMP' �), as required by the State Water Resources Control Board, for construction activity, which di� turbs soil. BMP plans shall be included in your grading and street improvement plans. Ei osion and or sediment control p1an shall be provided. 40. ADDITIONAL REQUIREMENTS a) Provide a letter from both a Licen� ed Structural Engineer and a Licensed Geotechnical Engineer stating that all of the exi sting retaining walls have been constructed to withstand the anticipated loads, c�r provide plans that acceptably incorporate or remove the existing walls. Curre:ltly, it appears that the south side (upper) retaining walls are the only walls that have been inspected and approved. b) All of the necessary fees and bond� will need to be provided to the City. The full amount of these fees will be calcu lated when construction plans and a schedule of anticipated costs have been provided. c) Additional items may be requeste� i during review of construction drawings. PASSED AND ADOI'TED this 14� day of Sep�:ember 2010, at a Regular Meeting of the Planning Commission of the City of Cupertino, State of California, by the following roll call vote: AYES: COMMISSIONERS: NOES: COMMISSIONERS: ABSTAIN: COMMISSIONERS: ABSENT: COMMISSIONERS: ATTEST: APPROVED: /s/ /s/ Aarti Shrivastava Paul Brophy, Chair Director of Community Development Plann;ng Commission 1-19 t � _ ' . . .. . : ... :...... ..:. :�.. �: ��":::.-... .. ,.�'. ��.: .: :...:.. , .. . , ' . . : : ' .'';'...' �' '. ' ' :. .. , ... . �A : ttac .. : �. . � _ , .� . . :. . . . . , WAYNE . 1�VG &: . : � � , ��1A C � : . ASSt TES, � [V . � . 1 :.: ��.zt��:� ':::. , . ......::... . _.. . , :. . , .. . , .... :.:.. . : . . , �. :, . : .. ;.. , : _ ; : t. y , �.. : 0 Au�u�t 2007� , , P : ... � � . . ;. :: - _ 1 . ; , . ,., : ; :. .. :.. : ..-. .... ... . � M�r.. C 1�i Nguyen . � . .. .. . . . .: .. .. . � 3465 Suiicres�t �venue..� .. . .:.. � , .... - � sa�; .rns�, c� �s � �� . : . ` .. , � �.. ! . :. :: :.° ;°. . � .:�.. . . . � . . . S��bj�i:t: . '` GFAT�CI�NICAL IN'VCS� IC ATIQI�I. . : � . 1'roposed Nguyen Resrdericc: � . ?2$ IO Merc�edes Road, �PN I�ro. 3�2�22-44 ., . . .: . .. . : `:.:: . .. Ctzpertirio; C�lifornia . . °; . . . : . •....:_ .:...-_: : ,.:.::.....:. . .. . . . ....... .: . .... , ..:..:..�... . �.eferenc�s:.::: l:)' Geologic Hazai�d° : :.::.: . , `. . . - . .. . .. , �3y Lduis A. Ric�atc�sc n. : Datetl 17 Api�i1�20f31 ° .. . :, :. ��. . .. : . ,. .. . , : 2) Geo#�echnical i�ive5t�gation: :. : ; By Wayne�Tin� & As :OCl�.�t3b` r inc. � Dated SI23/OI : , , : .: .: . : , .,..:. f�ear i`vlr. N en: . : . .: .::. : : . ; ; : . : . ... - �uy ;..,;:° . ... , . . : .. .: : :. � ... .... . . . :�.. .: : . �.: :. , . . . ..... , .._:. . . .. .. in accord�rice �wit� yocrr au��i�rizatiiin, W�y�e. T�ng ci�. A:ssaciates; �c: ('S�V"[':i►,i} ?��s � : . re�ere��c� a::1,.iti� 7 t�c�d: complei`ed a�eotectu�i ,al it�vesti��ticin for lizE}smpcssed r�sidezzti ai :�t�1ic�;� �re . . , .. ... . , ... .. � `:.;; at.tliu ;uhjcct`;:ite;: ;T'tie`pii.�tise o�'thiy` stud3 w�s to i�lvestigate t�ie site cUi�iiitii>ns �iiicl t�: a�r�t:'n:° . ; gec�teclicii�xl dat� �'o� use in :t�,e dasi� and cr�i �striiet��n of t}ie pro,��setl develcspinci�t �, m:�c�i� := c_�' .� , . . : �.:. :. . 1 ; : fl�ra .�nvesh�at�nn zn�lude�l tlie foll�wing..; _ .. _ -. :......:. .:. . .:: -: : : : . ,. .. .._ . , . ,:..... .. ......... . � ; -: - a, :: �. : 1� �site and area recoiinaissaii�,�c; by �Yi� Praject Frigiii�r.: . - . .. : ..... . ls::.: Arti eXCavatiori; taggiag s�nd s�rrrpling of'tvvci eacplaraf.�ry lioriii�s: :... ,:. -_; �:: : L�boratary:testing of�selecte.d sail sAmples: . i�. A� e�igi7i�ering analy°sis af th�� data ttnd infa�niatio�l ubtained: ��:. }�rep�itia�t �nd ��vriting af thi<. r��ort whioh mrescnts our fi.ndings, c�;.clr.+si .�us: :^�: . reca�nmendadons:: .. ; ; . :.. ....::: - �_ .. : . ._ . .�, �:. nui� fi�idii��s_iiiciir�if�. tltat.t�ie pro�icised d��vElopTrient.is fcasible fi•om: a;cotechni�.al en�ifie�.•s•;.��i� .. .. : . , st�ntlpbi��t pro�v�cl�.�l fhe recomi��ti�l�tinns in thts report are c�refull� fntlowed � : ..::: . �. . . :.. _ . ... . _ ...... ; •. :. � .... ... ... .:.: ... ,._ :.:....... . .....:.: ... � .... ..... .. .... . ... � � � S�'T� ��C,tiTYON: Al�'�1.U.T.SC�2LPTION� ; ..,. . .. ........ . . . : . .. , :. �::, , � The ��Ybject lot: is laGated at 1Vfer±�d�.5 �c�� tr ��upe�tino C�all�AZl'n� Jt zs botln,tl�� t`o th� tx>t tli �-21� :.t tiy bf�rc:�c�u l�:+k .!: to: th� �iotirtlicast. hy xri open�lot an�l tr uth�i� s�di�s liy siaig[c. .Ca��.� �)� IiUi��o.. ::.: . iot is aUacit t).�-acre ra�ii�i i:s Iocti�ted �n a 1:7 ;.6�riznntat:��crtical) �tn�3:lslopc. �Iv:�t;�i.�J �:,�.�°t:�r;r: cnnsists �f s�a..�or�at grasses and trces sverz cbserved �iurirs� caur s.it�:`•�isit. I� is nctte�3 i�,,;�r sahi��i 42329 t�s�ood Rvact, Unit A• Fremont, CA 74539 • 701: �51�) b2�-7768 •�ax: (510) b?.3-7f3b1 • wayneting@sbcglobcxi.not , i ; ,. ... . � . . � —20 ' ' , ; `' ; . : `:;: .. . .::.:... �:. .. .. .. , ...: : .: . . , . .:.:..- .. . ...: .. :...: : ,.. _:. _ , ... . .. ; : ., ... :. .. :. . . .. ,.'. °< - ,., . -. .. :. ,.,. .. ... . ;.�..:. ..,: : ; ;. . . . . :. , . ..... .. .. .:. . ... .: :�.:. :; :: : .:: ..::..,. .�..: .:.:�:.::.:.., .;. .. ..:, . .... :. . _ � . :: :: . .. :. :. : :.P . .... ...... .. : . . , .. .. ..., � . . .. , , .:. ..:::::: :..:.:..::: :.... ... :�.:.........:.......:.:,..,. : , : :..... .; ...-. .. .. .:.:-. :.: . .......::...:...::... . ;..,- .........._....;..::: .;.:........:..::..�.:.::.'::..;:.;:.:: ...a , . . . ... .. . . .... :. . .: . : : : . . . ::. _ -: . : :: : .. . . .,.: , .. . . :. : , .. : ; : . : ,. .. .. . . : : . .. -:. l 0. Augusi_200� : <: ::.: .; : . . ,`; . , .. , .... ,: .. . ' � ltave li�een gradeti. Sari�e pier �iol�s for t1ie. �irdpased `south 'retaiztirig .vvalls �iave kseen e�oavace�f: ' ` ! rouridation of the proposec� stcucture anr� ft�iuidaiion and t�taiiung walIs have lieeii construc�eci : witfiout tl�e observatitins af en�ine�ers and city. inspect+�rs. The frames of the stn�c�tur� have i%�er.. 1 removec� b� Nfr: �lguyei�:; t`rrade l�eams and �iet�s.a.re still rern�ained at the site. � . _ � : .:........ :.. . .. .... . ... ...:. . .. . ..... . . . . , ....::.:.::.....::.: ;....-:::: I ,... �::: _. .:_.:_::::.......: : ., ': : :: ; : �:: :b.�'V�L�P �� . .. : : :: .. : .: : : : :. . .. . 1 . _ . . : :. , . . ... .:,.. . : ; The pio�sec� de�el'o�znent 'e�nsists. of a t�vo or thi�=stoiy�residential structure aizci ��rivnte . , -. . .. � . . � dri��cwa}�: We �;ticipafe the propos�d: struc ure will utiliz� wood fr�ine'�ori�triicti�n v+ritl� raised. vvood floors ai�idconcrete slabs-on=grade in t�Ye garage; '��o private drivevv�y wi11 probably i�ti)ii� an asi�lialt concrete pavement� . .. :.. ... . :. :.... , . .. . : . ... . . :: . :. .. .: .: � . �'i t�STICA��{��; . : , , . . . : : ; . .. :.. , . . : . _ , ; . . . . .. . � . :. . ELA I� . . .... :..... .. .. . . .. ' �VTAX cdnducteci the field invesiig�tiari ori .Tti ly 1�, 200Q. The �ie1d investigation co��sisted of �„�t� � � . . : r• � � � . .. . . . . .. . . �: ;; :. :; _. i•�c.o.r�naissa�ice by th� �'roject Engineer �rid �ci exeav�tion oftwb cxploi•atoty borirt,�s. '1'he b�r�nys. . . _...... ,, . , . .. . . . .. _ .:::.:.°., ,.::�,iere�e��ai�afed�using a:trtt�k-�iit�unted;:drill-ri :wit�i:4=incli.solid sf�iii°�p�er��:. `'I'he appro�in�ate . ; _, $._. �. .. . , ........... : , looatiriris'of�tie boxings �re.s��wn on th� Sit3 �lAn, �`igure 1,: : - .:.':. :;:_ '. ° .-:. ..:: ` . . ...:.:,. . . ; ;..;. .. .:;' :.:::.:. ..::.::..� ::.:,;. ,::. .-:::.'.::;:-°.;:;::.:::.:,:_:�:::.°=::: .., ., .:.:.; :...;::.. ......: _ �.. . . : . ... _. : , Sot1s encounYe#ed dunng the exEav�t�on opera tions were contiri�iausly log�ed iti the field. R��ati�7tly undistuibed saii�ples were olitaiiied. by� dyi��imically driving _I $ i.iic�i�s. usirtg a 3.0.=incli otitsicle. ;� � diatinotcr Madified California Samgli�: witl�i a 14U-powid hairiiner free falli��g �q inches. I3!�tiv . � j caunts �nrere recorcled fdr erret'y 6-ixacti pene�•ation interval, aild reporteif coi7esponcling to #ltie i�s� . 12 inches of penet�atioa. Th�s� samples v�ier�; tli�n se�Ied and. returned to the I�lioratory for testiz�g: .. The cl�.ssifi .catioiis, d�scri�iions; i�atural �noi: ri�i•e con:letits; d.iy detlsities, a�'t�i c�eptlis ofthe obtai� �� _, . �: sa�nples ere shov�±n iri th�.I3or'in� Liags, �igtu�es 2 and 3 ofAppendix A. . ; . . . _ .. . . ..:: :.: _ � _ - . � � _ A]3�RA TO�� T�S`I�NG.. . ' : : �:.... _ : � : :: .: _:...: :: . � : . .. . . . :. . . . .. . . :. . ; . .: .. , :: : : . �a,j��'t'IR�-D�NS17'�' .:: .: : ::: '::.: , ... . . . . ..: : .. .:... . . ,. . . .. : ..: . , ... . .. .. . : � . . .. . .. : The riatural �ioisftve c�intents and/or'diy wf igli[s wer.e c�etermiiud fc�i selecte�. SampT�s al�tained �. :.. ' du�iiig isur. fieid invesrig�'ioi�: Tliese ciafa at � presei�ted in� �tie aforernenfi'i4ried i3i�ririg Lo�s. ; .. �T7`�,�B�RG LLYI17'S. � _ . ,.. , R � . .. . .... ..... : . ..:. . _ . . . . . . .. . . . . . . . . .. . ... , .. .. _. ;: • �tterber� t.�in'rts iest vvas'�1so Perferi�ed.ori.; electecf soil s�iup[es �to classify; �s.well as to nbtaiix �n ;. . : . . : . :; ... . .. . ... . . < � i�clic�.tiarr af tlie expansion aritT s�irii�kage p�t �ntial wi�h respi�at tb mc�isture: canteiit vsri ations: i: ftn� ::.. .. _ , - ,: ; � . . liquiil tii�i.it.arid.plasficity. o�thes��is �i�ei� found_to'be;:. ,`:;:.. `' = `.; . . :.:: . .:.:.. ........:::: � . . ...... _. .:. .. .....:.:...:::::..... ..:. ..:.:.:.::.:::. ._ , . .. .. , � ... , , ,:. :.-;'Satt%�il�:::::; : ;:; .: :;,. .. `:: : ; . ' '.: = ZCq�ltit Zi�i�t : ` � ; ; :. ' Prrrsti�liy 7n�ea:.... .: : , .. . .;.. : . �� :: . :: Dark�lirown�ilt3'.clay: , :. ..:. . , �7 ::. �.;: �� .. .. . . : .: . . ... � . .... . . � WAYNE 7YNG & ASSSOGl�i�T'.,5 .:�"'C: . . z. _ �-2� ; : . ,. , . .. ::. . ,. . . ; ... ... . ........ : � .... ,..: . . .. .. .::.. ... .... ...,...::.:.:.:.::. :.. ..: : ... _ - . . ..... . .. .. . . . . . ... . . .. .,., ::; , :: �.:` : : , _ ......:.......... ..: _... . ... . .. .. .:. .:. ...... ... ,:,.. ,. „ .....: ... .... _ _.... .: '.:::.'-., ; ;::.: .. . .. _ . ° � . . ... . . . . . : .�: : .: : 10 `Aii ' ist�20U7: ;',: . . , `` , _ . _ .. .: :. :.:::.. ...: .. � , ...:...:. �': ; ::; _ �.: : , :. ... . . . :........ . ... _. ..:. ,.. :_.. : ; . , :. . : .. ... _.: :..;... . ,...... ..... ..�. ,: :..::_.. �.. ,:. . :..: �...: :... . .. . � _::::...,..;.:_.�.:..... ; : , . : � Tli�e A'tterb'erg �.imi.ts`f�sts iridicate that a re�st�seirt�.t�,�ve �arnple o�the soil is ofliigh pl�sf'ic:tty. '�1i�.. .. . . ,. . � expansiori.potieiitial foi� tlies� soils is tlius h'tgli:. ':�. . : : �:. :'. : � ` . , ... . . . _ . � . . .. . :. ... . ... ... . .. . . . . . . . ... . , . .. : tINCbNF`1'�N,�D �Q1V1PkE,�S1'DN'�and DIR��'��.. � . � : . .. � . . . � ; Uncaufia�d co'mpression �d dicect sl��ar te.ts`�vere per�'ormed�on reiatively tatidisturh� saiii}�ies . ; . . .. . . �. . . � to evaJuate the ultimafe coi7t�ressive sirengkh and soil paraii��cters. Thc test results arc pres�t�fecl ii; �. .: : #he Boriri Lo � . . � � . � � 1 � � :��:: : � .: .. .. . . : : . .... . .. . .. � . .. : . . .. , �.: :: : �. : �: � � :. .: : : . : � ...:: sussu�A�, so��::.coivn�t�xs : : : : .:...:: ..:..- ..:....... ..... ... .. .:.. : :. :: ::.: _..:.:. ..:-�-..�:: :::::::.:.: :.: . . -.:. . . , ... ;:: .,: .._::..::::.:::�, _ . .. .... .. . .. ; ` ..:.:: °:::::: The. fol�ov�nn . s�il`d�scripfiq�is `were.;de�ived�`:frpm; our: ;site::recoiinaissance: �iti tlie inforariacio�:. > : . _ ..: .. .. : _ ,..,.. _.. . S. . .. ._. :- ... .. . .......:....::.:..::: ..:_,:...,...:..:. ;.:::::.:::-.::•::.:�::�::..:�:.:;..,:; _ _ _ .. ... , ..� . .. .... .. :..:.... ..::.....:. .. . :... . :. .. .. . .. . .. . . . . : ; : ,: `alifaiised: fxam gur �xploratory desariptioi�s o:�fhc i�ialeriafs�epcouiitt�rtc'-.:: : . .. : : : .: .. .. .. . it� the �exploratoz'y kiisririgs and th�`r�lts of' �boratoty t�sting are �presei�t�d.iri the Bor.iri� Logs... . . :. .: .:.: .. . , _ .. . -. . . �3orin�g 1, da.�k and ligiit browti s�ii�ly, silty c�ay witE� traces of rne: gravel; dry to sligIitly inois� to mioist, soft to firm, to to the d�pth ofttbo�rt 7 fe�t {fill). Underlain this fiil layer w�,s brai�7n silty . clay with traces of gravel; moist veay stifF to liard to the depth af about 12 f�et. Liglit �irc>�,�E� i claysitone to:. ciaycy :r'iltstvrie. (Sania Clara .i�or�iiation), t�oist, moderately eonsolidat�d,' ��r� , encoiiniered fi�om 12 feet td �tie refusal dept��`of 24.5 feet..: . ; � � . ...... ... ....:. .. . .... ._. : :....• : : > :..... , .:.. ...:..:::.:� . ..:: . ... ...: .. . .. .... : .. . _ ... .......... , .. ; Bai�iag: ?; sails encoun��red cbtisisting of �S f .Ct Af 1T10iSt f rm to :s�i�'f; daz�k hr��`i` silty �clay:. "1°'�is. : '.: .. : :. ..:...... ....... ; � ,: sitty �tay was. un�derla�c� by lirown silty sattc wrth° saiidstoiie:fi�igr�crnents;` triotSt, .: , ; +dens+�, to th�'cle th of abau� 1:0: �et:::.ilrii.decly'izig thls siltiy �an,t�:was li�ht bror�m, claye� ic' ,. . p . ....:. :. ... . : ..... .. . .. ; .:.�::-:;.:;_:.:. �...,.:�:; ..- .:....::.......::...:::�.:.:.�.:.�-.:.::�::_:::�.:.:.•;:-, ., .:. . , ..... . . .... ... � ':: `Sanr�s«tte fSaiita;:Cl�r�a �orma�on),: mois�: troderat�e�y corisolidated;.:to.;th'e �efusal:_cleptli`e�Xiiara3 :: _ : .: :... :.. . , . . ' . ::.::. :=` .. . , �f 2� feet ;'- . .. .. . - . ... .... .... :.. :.. .... . , : . . . .... � .. .. No grouiic�water was encoanter�d �n die exptc r�tory Eioririgs at t11e time of our field stud;y.. ��owea�er: fluctuations in the ground�vateX table are anticipated tn vary with respect tn seasc�nal rainf.n�l. , . , . � �..., , . :. -.: ; .:.�: . :.. : .. . ; . . . '� . . . LIQUEFAC]'ION EVALUATION � , . . . ... ,. . :.:. , :: .. ... :.. : . ... . : .... ;.., . ..... . ... :. . :..., _. . ;- ` C:1que�action:is a: . liea�ainenon im wluch-sati�.;ated su�im�r � ed cohcsioiile�s sub.'eci�i� to ._. ;. � . , . : . :-;.., ....._ :�.. -.:. � ..:. .. .: :::. . .. . t.. ...:.. B ) . . � � - � a teni o�+: lass o�sfren du� to the burldi� � of �` r� wat�r ressures e eciall as a resultafc c.��c _.. : ° ..: . :.. :.:.. :.. , P rY �? �F : ::;1�..,.:: p. . .�; Y Y ' ,.. . .. : .. i _ ;: •:.:. �. �.....;-:,:: .: ;:..:°:; •. � :; ,,. . ,.° .::; . :..:. ..::::.::...::: :: :�°:: °,:�::: : .:.: .,. :.:,. ........:..:.: ,,., :; .:..: � ...: : .: ��: .,,:::-:.....,.�: ....:,..;. :.. :. - l�d� , xnch,iced �s�rth ua ' � }��. .-; c� . �?�s or untl sh:a�C�n .:. Irx th�. r.�cess: : �ie: so�l a�� uzxes: a rnoEii��t - `: :. . ...:.: - -...::.::': ::. = -- 8$... : ..:. .. `. .. .. ..: .. .:..::.::.......... : : . :: : �:;,,: _ - . ::.... ...:...... .: .� ..:. : . _;:�::.::�..__.:.,:.. .::..::� :�::..: :_..�.:...:._....:..: .: . : . . .... ....:.:..:.. �. , .. . �_.. , . � _ ..:..::....: ::.:.>suffictentto - niiut.lioilti.�iorizontalati�:i��ri�cali�efoirirsatiaris;.ifii�t:corifiined: Soxl,s:niosfsi�sc��iti.l�Ie: .°. : ..:: . ,... .. P� ... . . :.. ....... ......: _: . ,:.::. �:<<,.;. .: . ..: ... .... ..; ..:...: . . . _.. ..._.... � . : .. . .. . ; _ t�i licjis�f�c�on are clet�n;:.l4ose, saturated;;�}�n�foi gra ed; u10 s�znds. _ . .. . .: ..: : ; :: : : :.. . .. .. . ; _ `` Ba�ecl :ci� alu boraxzg log d�ia� so�ls su�c�pt ble ta liquefacttoii:. wes�+e n6t eiicountered at the 'si�� 'C�iarefore, it is niir'opin'iori t�iat th� �amtia6ility of liqiie�action at die siie is ]ai�v. . .. _ .. .., . ...... . .. ... .....: .. : .. . ; . � . . .. . .. ,:. 3: . . . . rr,vt��AS�ioci,+T.��: : � ..': . .. : _ . . ..: . _ - . .. .. . . . - ... ... ;. ;: .. _ . . . . . . . _ . ... .. ..... : . : . : .... , _. . .... . . ... ... . . . . , . . .. ... : . :: . �- , , . . :: ... ,. ' ::. _. . .:. : _ .� � 1-22 . ; . . _ . ...'. , _ - . �.. ...�. ::. ..::. . _..:.: : , .. . ; ,..�: ... .:.:.. . . ... : .. � . . . : : .. : � .. _ . 1 . � . � , : :. ..: :. . ... : ;...::: : . .-�. ::.�.. ` b �Lug,iist 2007 � :.. � . . , - : .::.:... :... :�.._..., ..: °::::::: ,....... ....: . :.:...: . , ..: , .... : : � `�i�CLI4�I��Y(;L�l� 03V'S,.�,�'.D:R�CtlliviM,ENI�A'x':�4NS. � � .. . .:: : .. ... . j 1,. B�sed an ttie r�sut�s af ciiu 'iavt:�ti�ati.vri,1�JTAY concludes that�the subJect site .is geote�l�i►f�nity� 's suit�ble fcrrthe proposed resadential develop�nent: The propqs�d devetopment cat� be coustr��ctec� t provideci the recoinriie�ciatiorispt�sented.in this report.a�ce incorporat�d into.theproj�ct�lans <�:�d. . , . .. �: . . : .., : . spe�y�catipris;.: `..: : :::; . :..: : : : .:. . .� : : ; . :.. _ � , :..:. _ :...... ::..:...::.::...:.:;.....: ..,....:.�:..-. :-........:..,...::::.,..,.,..:,:.:..... ... - , :.,:. .. :: ... : ., .. . ... ... . .. .. . ....... . ::.:�. : :.... ;..:.: :.:.:.: .... : 1 '' '�. '�W'Y'AI sh�uI�t r�vi�w`tlie gi�iri� �nd'faur d�tion plai�s aiicl°�pecifications so t}�a�t corziinet�ts ��n ":,' :;. . . . , ... . ..:. ::. .... ... . '. tie nta�lc��regatdin�ttie int�rpretiat�ori and impfemenc�i'tion of oinr g�otechn'iCaf i�coi�mciitlatioi�s-in. .. '. tlae�design a�d sp��i�catior�s�� : ; ;. ;:: : ::. . ; ,.. ........ _ . ..: . ... .. . ..::.. : . 3. ��f reci.ii�rn�nded� th�t� '�V'TAI be retair�ed for�`testin� aiid oiiservation dui '173� �',t'�C�111� a�1c! . founcftitiori constnxctibri piiases to help deterii5 irie.that the desigri requirements are �itlfi 11ed. Ota f 37�1 ` shoul�i: be notified.at least rwa ti��orking days prior to gr�ding a�td/ar foundation. opexat'io�s oi� �l;e � prop��ly: :::.. � :... . .. . . :-.. ...... . �.. . . .. ... .. . .. . 4;:; At►p ivork..rel�tecl. to. the: gi-�cliiig andlor foundatiorc oper�tioris performed withoiit ilie cii��Qrt ; al�servatitin of:'WTAi will iiiva.lidate: the recc mmendations of tliis i . :. .. .. , .. _ . . .::.::. _ ::. ... . .: : . .. . • ' : ..:.:: .:�.:�.;:::.;:.; , ;..: : :.; :.: . .: ........:.,..- - - �. ; ::...... . ` ; 5 ; ,:::`1'I�e �ec�oim�nda#ions giveri iYS`�tivs:i�e�iurt ar�:applicatil�;�ii��r desigii: of die pre�viiitii�ij=:. ; : J desc��b�d` strticture ai�d oiily a# the 14Ca�ion it di�a.te� oit the site pl�ri.: Tliey �hi�iitcY ��oz be usec� #'ot ; �..�.. : ...:... ,.. . ....:. , an�+ other purpos�`:;:.: ' :::;' :::' :` : ::::.:: : ::.:: `,:. : :: ... : :: : ;. ,. .. ..: . = �. : : : .. : .: _:.; ..::: . . , : - . :.: : : : ; : ; :. ; ... ;...: .. ; : . : ; A�;TTQN ANI� Gk�AI�ING� . . . _ . : ' .. :..: . ; - 3I`�� P�P : , _ .. .. � :: :.. . . . � G. It is noted that the Stibject s�t� has lieen p�eviously graded. Steer slopes were obsei��ecl on t�,e ! soi�tUeast part of tfie Fropei�ty. Tlie proposed garagc p�d have beei� cut into tlle e�istin� gr�unc. 7. `I'he. eXpos� garage �i�id gr�,de should b� ,�c�t�f'�.ed: �ttid watered �r aerAted as nacessary to bi•.i.:�z . .. ti�e soils to 2 perceiit above tlie: optimi m: moistur� content and unifvrmly coznpacted #� a . . . .. .. .. . - . maiiiniiuia relative cpmpactian rif �0 percent: if the mai�imtiirt dry derisity as deteirzutie�l by' A5"t I�-� ..`.: , .. . . .. .. ,. . .. D 155.7..�02 Z�aC�nratory Tesf. Proced'ure :. :. ...:. .. .:: ;::. ,: .. . . ....:::.::... _ . ;.: .... ..:. ... ..°- . . :: `.; .: . : . . ;. :..::. ., ... : :: . ... . � . �,l�:A IU�I . .... . . : . .:.... _, . . . ,.: T .. .. . � . ....... .. .. ...:: ::. :- ..:..::.. ....,... ,:......,..... ,:.:.. .,.....; :.::.�...,.. - . ...:....::...:.:......... ..: ..... . ........:.. .. . ._..,... .. ..,... . .. . � . : $. Due ta th�`remained �li� aiid slide deliris, i He p�ro�osed sttvCture should ��'si�portecl an a sti�cli • �ier and gade Uea.nn foundation. "I'he pier� shauld b� constructed on � eqlxal spacing af 3 r=ier.. diameters measune�l c�nie� to craifi.er. The .�liov�cr�eationed ex�sririg pier foundat�on ancl gr�.de � beams st�otild not be used. In order �iot to di;;tvrbing the exis�ing graund, they may b� rem�in��r� zt th� site. 7'he �ac^w structvres sbould be canst� ucted at least 3 to ��eet away frotr� the existin�; pic�s s. � ; .. : . .. . .. . . . ..: , .� ..... ��__ . Y�i� acldift4rt, th'e im�f.�bTe soiis located oi.tside t�ic prppose�building snvel�jie s�iould also '�c , .,.. . .::... - � °.: supportecC �y t�ie stitcli. piers provic�ed 3�eet deep=sul�draari liehinil t�ie piers: The iocations ii�' �t�r:' . _ : .. stitcl�: pi�rs: �re� �howii on ihe stte plan, FigU�:: l . ; . .. . :. ;..` :; ::: : ..: _ . � . ..:.. . .: .: :. ::,: :..::.:.. , . . .:.. :.:: . . . . . . . �'�S; IJ1'G : . :.: : ..: .:.: . .... . . A : : �..: ...:.• . . lf�i�I XNE �NG & iLS�dCL�i . . � . . z 1-23 ; .. ; . �. ; . .. . :.. . . _ .. : . � . .: . :.: : : . . . .... . . .. . . . _ � �. ,' ..: ...: ..:...... . . : . . _.... , ... .. . . ::. :: . : ..:... ... . ► . :. : �. . :. : ... : .. . �.:.:.. : : .. . . . . . . . , .. -: � :..:.. : .:...: . ... . .. . � .- :.:. :.. . : .... ....: . .... . . . . . . ... . �:..:: .. .... . : .: l U , ... � : �. . . , . ,.. , , . . .:.. .. . .. .:..: ...., ; ... � .:.:.:. ...::: .... ..,. ... . . . .. .. ,... .. . , . . . ... . .. ` 10: Tfie dri11et3 piers:�liould:l��we a��rtin�miiiii o�,I$ �ia�clies iri diameter aftd �iii ein�i�dmeiit ot 12 fee�. ; . , .. . . : . . 1 `::: ,�: i�to - th`e� underlyirig ro�is' v�+liicli approxiiria#eIy froiri. $ to 12 feet b�low. e�istirig gi•ou.ad :: ; .. .. .: . . . : .. .. :. ..... . .. . . � _ .. . . . surF�ce::.:I'he'i.�e �tlis of �exs ma r�tn e ; . .. . ... P.. . P ... :..:.. .... Y � .:�. . m ?{�:to �4: ��et below th�.:gr6tand: siirfac�. . Tli�s� piers , .. .. . . :.: ....: ..:.:�:. .: ; shaiild be� cl�.si�e+cC:�or: ari alla�ivab�c skiii fn�tiori a£ 60Q :goirci�is �p�r sqiiare faot f�i� dead �tiis liv� : _. . .,. .. . . . .....: :.. .;.. . .... . . . .. . l�iaels:�� TC�'i� vaiue..is only: appiicable:for pitsrs� con:�#sucted ui the rock and ci�i �e incre�secl iiSr :� ; �ne-tturc� f�r total Toads w�iich� incliide �virid: or seisaii� fbi�ces. Ttie validity of �l�is v�lue is basg� + oct a 11�iriTri7Utri pieP 5pacyn.�; of 3 pier di�tne�te s rxle�stlt�tf Cd1�teT-to-oerif�r �1 rninimun� af � N�. � i bars shoutd �ie extend�d for tl3c fuit length o:'piers.� Adcii.tional reinforcemerit will be det�rnzin��? ; by the Strucil4ral Engi�eer. . � .. ;. . .. _... ; ,. .... .. . ,. . . t I` �ue 1:o tlie sl.ope corisistiiig of Ylte �11; sIi 3'e� ciebris; and cc�lluvium; th� �upp�ei• 8 feet of the .piers . , . :;Icicated° on eiccavat�i°ge�To��: tr�n?ch:a�ud the u��er I 0 feet of the piers la�ateci ;�c± ; , . ,. . .. ::..:........:.:. ...,.. . . :: ......::. : . .... th� iiortli c�f t�ie trenoli should �i�:dcsi� r�erl'fo�r�.sist latera] earth �essure� Th�se ressur� �r�e ��i � ... .. ... . .:. - .. .... .. ... ; -..::::.>.. .-... : .: - :.::...:::...:...... ....:...::.:.�.:->.g...::.:.::::,:._:.:� :. .= ..... . .. : : ..P_ ... �?.:..:....:. � . .. ��. � .. . , ... - �. .. : forc�} presented a� tYie.:eqirivatent: #luid w��git ski�uld be 8� �p:c.�; Iri additiorii; all' pters st�oul�i i�e. .:, : . .. � ,�.:.: � de�° tagether �vit�i� grade be�ins to act as a u�: # in: resistuig lateral loacTs:.' .... � , .. . .. . . .. .. . .�. . ... . . .. - i 2: �esis�;nce to�Yaterai forCes may Yie proviclec� by passive �rth pressure ri�o6ili7..ed along�the . �ier lengtt� in i�te roak. Passiv� earth pressurc �n be.computed as an ec�uiva�eut fluid weigtit of �St� �' tx�Lttlds per Culiic �tibt �.c#itlg Un 2.picr diarte:�rS . � " . . , . : _ . . . . . . , . .... .. , . .., .. .. , 1.3. � After tlie pier �rilling t� compieieil; t�io'se mat�rials at.tiie boitom af pi�r lioles:shoiilc! ts,: . ' . r�maved p�ipr to..�lACin� �I�t?c stcel.�uid Depr�sslcins� at th� tup nf picrs r�sulting lr�ril ; .. ..... :. - drilling operatio�is._s1i�uld be back#illed to�pr:yezit po�iding af.wat�r:. �.: . ; - - - � . :. ::::.: _ _ .. .... ::::: . .. :.. . . - : . .. . :: ::::.:: :::...:. : : : :::_;�: ,,,:';. °;: :;::::�:,..:°�:::<:':::.;:: -:°:°::�;:::: : .�: :.... _.... . .. : ,. . . . . , .. �:. � :: �..::...:. _ ;.. ; .. .: . :... :. :..: , . . ;: . - , _...... .:... . . ;. _: ° . ::: � . - �.� t A . {J : . . ::. :. . ::. .: : :::.. :. : .:... .: . :::.. .:.:... :..... . :::.-.;.. : . :. -. : : .. ... ,.. .......;. . 14. �'o reduce tlie: cracking �tenti�T of th� a�ncre�e slatis; �oricrete stal�s�n=grade ciii' gari�e �irza. :. . s3iauld be �iric��rl�iiY b�r at least 4 inches �of 3/4-inc�r cleari �rus}xed roctt to �+ct as. a cushion ��ct ` capiflary 6reak betwcen fhe subsoil and ths slali. The sl�abs shoul�: nat be dowelcd: t!�� .: . foi�ndr�iinn pez7meter t�nd shoult� tie reitiforcc d using at least # 4 bars at 12-inch on cei�iters. . . _ . .:::�:. : . � : .: . : ...... . .. ,... . . .... ' � � � �vr�vr waLL : :. :.. : . . :: . : .. . : . . ' � : ; ::: :�: : �: :;.: .: . . . , .:: :_: ..> .::::. : :.:.:.::� : : :. :: .::.: :. :. ,. ....::._.. .. .... :;._:: . ..,.::. :. ;_ :... . . :..: °;15. Ret�'itxiiig �alls:i:ri�dex 12 feetiri: heigiit`sh nild bc designed to Tesist t�,e fqlltiwuZ� rec�mriienc�c�i .: ; .. ;; lateraI eartli pr�ssure: froin tlie �nriistttrl�ecl ni engincei�ed liackfills _ ::� �_ �.:...:.,..,... .._.. _ ,. ... - .::.:.��:: : : . :�:,....:..°:: :::.:; :. ;: ::: �....�.. ..:: . . - . : :. . ... ....: . . . ,. . . .. :..:... i . : : . .: .-: , :::.. :::.... . : . B Iu d W - ... .. .. ... .. . ; �lope Inclination e n aJl.. . . ', . .. . . Equivalerif �7uic1 V+rei�hf (p.c;f.) ; , , � _ ' ' ' �f �bnzoinal ::ile,�ticall : �,Jnrestrain�c� �,tesirained Slicie Debris : � FI�t � . � 45 . 65 12S : . 2:1' .. . . , _ ' 7S. ._. �� 1'?S. . . . . _ .. . , S . N/AYN�' TINC &.�OCl9TES; .Fi�'C: ° _ .. .. . .. : : . . _ ': � ... .. °.::: , . . . . :.: , . -. ... • ,:, ' , .. ;. : ... .. - . ...::. - . .. . ... .. . .. • . . .. .. . � 1-24 � ..... . : . .. . :. : ' - � � .. : ..a , .. .. .. .�.::' :::. � :. . ::..::.: . :: , � , .. . : . ... � � . : . ...:., I , 0A ... .. . . . : : ... . . ug�ist j ° 1'6. Thc �bov� `c�ritoria:aie U�s�tl upo�i: a suffici �ut draina�e system tio be construc.t�d lieliind� the ryvt�[Is ; , .... . .. . .... . . I '::, ta prevenC th�Yiuild=up of�ydrostaticj�ressur�>,;'i'lie wa11 �raiiiage syst�rn. shoiild coiisist ofa grAV�e1 �.: ` , i . ``, �:. blankct a miiiiitium wlc�th oF 1,2 ii�.ctie� �ztt:shouEd e�t�nrl:verheaiiy up to i2 inciies:6elow tlie � gmund°si�xfac�:: The top l2 i�n�l�es°shou[cl:be tsackf'i�ted vtn�li o� s�te, s4ils: to provide a sinfi fiM�.l ; : .. .. . � and� tie g;aded a'i?�ay: from: tlie.wall:: If:the e� c�vafet�: Area �iehinii. tfie i�vall �exc�eds 12 incl�es, i:he : �ntire: excav�ted space� �should fi� backfillet� rv'ith gravel: � Tlie gravei blariket ��.ay consist c�f t�r�sn . � rock or cr�isliet� roclt w�'appeit effeativ�fy:tivith fil�er finbi�zc:.:. :. ; � 1�. �'oui-inc�i diaiYleter perforateit pipes sho.tici be placed ari bedding at tlie Gptto.ni oi'ti�e gr��:! b�ank�t. Thc perfor#��ions should be placed ff Cing dnwn toward the bottnm c�f the excavntic�n. '� i�e ' beddixig sliould be at least 4�inch thicic, Tiie`��ip� s}i�uId �iave a rniriimum gradierit af l.d pe�cert . ai�d should conziec�t to an.actequatEly ao��trolled outtet faciliry away fro�n.the building shvcture. �. . .. . . . _. .,. . .... . _ . ... .: ,. .. . . . . ; cmSS s�chi�ri bftli�:drainage systerri `tie.retttiiwa :vc+�l� is �rovitd0tl� is Fi �ire 4: :: ; ..;: :._ . : ` : .8 p ..:.. .....::�.. _:.. . . . ..:. .. �,.: .: . . ::.: :. . . .: ...::: .. ..:.. -. ..:.:. :, . . . : :. ... ... :�: : . _ . � . . . . ;. .;::: -1 Re�ining w�d!(s: should:.tie:- su� orteri° ori' t�te #oundat�on stern �.s:� �coiicimerictecl°`urrcipi�'. � .. .PP . ,;: ..: ::. . Fonndfitii�n Sec�on 'fhe aliove rec�rr�nneridtd creepiiag:force �apply�iiig ta the. dept�i.of pierri��iy. _�e . ;..: _ .:.... ; ... . . ,. .,.. . .,,.... .., ... .: calculated �i ��ubtrac#� _ t _ .:...: . , ..... -- , _ . _ :.. _ �: . ; !a8 kie: �eigh� o w;all ��um�:the creeping:zon�.of IO:Fee�. . . : . .. . . . . . ... , . . . .: .. . . . D�7 C�VVAY . . . . . .. . .: "19. Yrior to.aayy pavi�g canseruatibn, ttse u�per 10 inches of the native ti�abgiade� soi.ls skiould be � scY�rif:ed, moishn�e-coriditioned and. recornp�eted la at ]easfi 9� percent at 2 percent ab�ve tlir ` � apCittYUin rrioisture caritent.as d�6ried lij! AS''N� DCS57-9� Tcst 1'mcedure: :. ; .. . _ . : ...... .... ..:.. . . .. . : :. .. :.:. ..: . _. : . . .. :.::: .:. : .. . : . . .: . .. : .... .:�: ..... � ' 20:. Aftex.the the.'sub � rade a, re ate �iaserocic.s�iould t�ier� be I:�iced bn fd _ af fhe `;:':. . � .... ..::.: � €� g :. . P .. . P _ :....;.. , .. �:. . .:,. • . . .. . .. . ..`svbgrade;tuid,`cAm�.cte� to 9� perr��ntcorrt actib�:.:°C re_ te.�:s�iocl� shp� , g � ; .:. . . ' , cotifvrri� to t�� `r `uiY�me��'o� �.te �tiari�lai�i ��: ai�catloiis. of Cattrans;.�� cdon 26=1 O�r� ... . . . .. �.. �. . .. .. ., ,. . , : . ... . ., . .. ,. 2X, 1� p�v�iiient section'o� 3:0. 'inclies:of �as?l�lt c�i�cr'ete aver i0.0: iiicli�s of`ag;�re�ate liAS� �s : = , reconuuended; . :. :. . : : :.... ..,. :. ,. .;. . .. . �. . . . . . . . : ��_��?IY�TR�}CTION �O�EMENTS �2. 'I'o miinitniie wa#er seeping undern�atli tlie faiindati.on,'V��'`�AI recomirtcrids a fciuiittat'iori c1i�;�iii be coi�senicted in the up�aer slope (soutli�rripoct'ion oftli�prb�osed r�szc��!rce). T�'fo�nclatian di :. shoui�i.lie coz.islructed`at.a.latera] :destance o# t2 �nches and �xcended at least 24 incltes b�low rli4 � :�::::.:. ; .:�_...:: :::..,;: °:;: :._ .::::.....:.:......: ::::�:.:� _:;:.-:�..:.:::..;:, .::::�; :.:..,. ... , - . .._..... .:; .. ;�:::bs�t�om..oft.t�i�gr�de:boaxns A,t�yptcal,crosss9ctiqn�oft�i�:fou�i�aitioridi�in:ispro�idecl : ... . ...: :... . . .. , ... .._..:.,. . , :_..... . :, : - - , .. ... . -. T�e. erfprated':pipe_'S�►own:.Xn.,;�igtii'e.5 �'sii[.1'riass,}�xto:a sol�d;line �ipe at the etlti tlra►�i; tIiei�_b� : P . ,... .::. .::..::: . :... . ,: .;. ,; : ,. � . . . . ..,. ... , _ , d�ir�ct�c1 tU a su�tat�l�:dtschi.ir� e fire�. G1�ant�ut riser5:shi�uIdb� pro�±ided zt�the upgiadienrend afthe : ,. �. .. . ; . . . .. . : g . ... . � . :. ; , : p�rFortifed p�pc; at shai'� 15end� �d:`at:T00 �`o�t°zx��niuin�int�i�vals. . : :� . ....:.. ... ...:.: :�..... . . .:.. .. .. . .. . , ..:.... .....:�:,:. . . . . .: . . . . 23. A1� `fiiushed �rad�s ritust L�e Rdjusted to provid� pasitive drainage away fron� t1�e strcictili� �a prevent pondirc of �rater in or ncAr tlie builc ir►g. , 6 . F3'.4}?VE7Y1\'C'i c�C.4iS`lK7fl7ES,.,fN£: : .. : , � . ; : _ .� 1-25 , ... ....._ .__...._.. ......._ ................................ ... . . . .. . ... ... ; _ , ... .. . ; - - : . :.:.. �...:. ..:...: � - � - . .. ... . . . .. :... j ; .. .. . - . . ..... . ... .:.. .. . :,, ..... .. �::.. -: : :..:: . . ..:;...: :; : ::... .°':.. :: _ �..::: .- ;..... � . . .. . : : .... . . . . . ... : . : : : . . .. . . . . . .. . . . . . . .. .. .: . . . : : . ... : ::. ,: : . .. : . _. . . .... .: :. ... .::... .. ... P!'Q ....:.. ......::..::...:...,.:.:.-.:�::.-:::. ,.:.;_.: ,,: _:.:;:. :.:;.:.:.-::::.�.:::,.. ,:.=:::.,<;::.: ° :•:::: ..:... .:. : . ::.:..::._. :...:_.:::-,:..:: - - � : . : : :. .. ... ... -:..:.. . - ... - ; .:.. . . .:..-. , ....� -: ... . � . '. . ' ; . . . . . ..: .. .. .. , ..:.: :.: . ... �.. � 2�1. R�o�'draina.ge slioiifd �he ciiilecfe�l 1;y.a ay:steua of gutters aiiii do�uvnspouts:`a��i �dischargecl t�y. _:: � , . i adequate pipizzg fi�r carry s�orm water away �i arn the structure. .. . 25. �low�rbeds and plantir.rg ane not recoiruii�;nded along th� b�uildiitgperiziteter. Spritiklcr systr;ms � ,. �. shotild nat �ie inst�llad: �+tiere they may caus�: ponding or saturation ofthe fa�dation soils. ... ., :: . . :...:.:_..,. .. . . .. � . �'6.. The tia=site slope Shoiilcl be co�rerecl by j uEe net �or t�ie erosian cbiatro:l pii��poses: : . , _ . .. .. :: : � . :�: : - - ., _ .. .. _ . .. .:.: �_: _ - : . . .... :. : ;.-. ..:.:.;..;.:. . ... . :. . . :...:...... ... -.,:, :::.. �: . . �: . . ;. .: •. ..: :; •. . _. ::; , :<.:: ; : : :-. . : ::: .:,.::: : � ;. _: ; :: _.�;;.:. .:. : ; : : , :. . i,.,..: ...,: .:....:. _ :; :::::..:: :.:.>;::_ :. :;. - . � , ` '. . 27.: I3acltfilt oF:i:itili `. frerickies:'iiEii.de� diiv� Wa �uud;l�u�Idm ar�s st�ouli� bc: com ac#�d t+o at 1e�st ':: � .. . . : ..: ::: :. .. . : : . .: _�' . . _ : .. �' .. :... :.. . .: :.:...: ..:.; : . : ..:. �. . _ . ..... � _. . .. . ..�.:.,.,....,.... . ,-.. , . ......:.:::..... .:::... + , �4::perccnt.� t� ei�sur�,sga�xst:uiatei�:�zgrat�ar� iinderriea��i.the::strucfure: :::::: : : � :: . ::: :.:::: : .:. ' ., .:. : .. . : . :: . : : : : . :: :. -.: .: :. -. - :.: :.: ..: .: ... �.: ,:..:.-.: ::: :.•: ::--- :.. ::;. �._ :.....:. :. .. _. ..: . .., : � ..:. .. -.. .. : . :. `:: ;. ': �.�TA'�'iO�T�.#�„N�3. �t�'ORIVIIT`Y �F: CQNDIT�Q�Y,S. ; `. . ; .: ,' :' .:: , ; -.' : : . : . ,. . . . .,.. :..... , .. . . _ .. . . . , .... .. . , _ . = 2 8. Our clienC stio�a)ii recogni� tliaf this re�c rf is pre`pared �for the ei:clusive use of t�is pzoject: �7u� ` professi.onal services, �iadii;gs, And rec�mr►��;ndations were ptepared in accordaiice wi�h gerier� Ily ; accepted �ng'irieer€ng priiiciples �tnd��ractice;: Na oth�r vvtirranty; expresscxl or iinplicd 18 1'Y1;�C'�4' . 29: 7`hs conclusionsand�recominendatipns �+�ntainedu�fhis report�vvill aot be considered valid i�i��• - . .. . ` a . ridd of two. �ars unI�ess �'lio oliaa es �re reviewed; an<i. tlie cobclus'ians of this re rt �re. ,. = pe Y , . :.. . . .. . .. . . . , .,., :. :: . ... . . . � ° modific�i oi� ver'rfietl rri:wr��trig:;,;.Iri;the ev�nt'fiaf� ariath�i° geof�c�inica� `cbnsultaiit: other thaii::WTr'1l' :" ' ':....,....:: :°::::: :.:.; .::::..:....., .; :::_�.::::::::;.....:..,..:.:..: :.;::::: ::.:;.:::::.�:,:::,;,.:... ....--.. :...,:...:..,..:.:.:::,: .......: :.: : .:. . r -.:: . : : ys_engag�d in-.pro�vidirig of iftdem�ifcaticrn'; '-.:: ' ; :. ,;- :.: _.,. , ; � ,.� releasui� i�s of ar�y� xes�anstb�lity o�i tli�: sub� �ct pro�ect ; : :: . .: ... , . , . .._. :. .. .... • . :...... ............::.>.:... .. . .. .. . .: _ .. ., ,. . . ..._.: . .. . :......... ... . ..:: �. . .....: : :::... ,.:: . ;.... �:......<_..-:..,...- :.�.,. ., ....:. . :,.,.;.-: ::.:.:.:.., :, :. :.: ..;-.: ......:...... , . . ... ; . , � 3`0:. T'tiis °repirrt� is issued witli�:'t1��e wtders�ridirig tliat it'� the res�an§ibility` iif, the owrier.: or liis � ropt�sEntative; tii �ensurc. tlie irifonnation and recominencYa#ions colZtai�ed in this repvi� ar� brou�t. i ta tli� attention nf th� arcliitect, engineer,_ai�d contra�tor. In all� cases, the contr��tor sliait ret��iri i res�ansibility #br the quatity of the work and 1 orrepai»ng de�fects regardless of when they �re four�d. � Ir iS aI50 k�1C I'CSpOTl3lbilli� �Of ��I1C COritCc�Clpl'IPT CUriFOIfriITI� [q Ql� �1'O�f.Y:t pI�!!'1S itI1C) Sp�CI�ICIICI41)5 . . , .:. . ; Sliou€d. y�ou ha�e any qu�sttons`�^elatirig to. tli� con#ents.of tliis repo�rt; pl�se cont�.�t.our ot�c� at y�ta• - _ . . . ... ... .. . .... . . - . :.: ... :convcni��ce..: =:::.._ : .: �.: :: :.: ..: =: '= ; ,.:. . _ .. : . . ,. , _, : . .. . Ve trul o�ars ` °: � : : . ::. . : '-�. ; . ;. rY ; Y Y . .. . � - ; . ... : , - ; , .`:° ::: ° ' � s�tt7 ,_ __ ,. :. � '4VAYN�:T�t'+7G B`i �lSS{��IA`I'�Sti INC QY'� �;�: ri r �� `�, Y ' � , � , ,, :... : : - , , . :. w �` j '.�a�'� �� .. - � , ; ; � � . . � i .. . - - . //'J �� Afi�� N � � Lv�'�/�""` u �_��,p � . . . ; � � �� . � � � 'Wayile L, Tin:�, C.E. . ' � � .� ` . . � � Principal Engineer �'��.�� r�d�" ' ��-- . . . . �: , Copies: A�° to Mr: Nguyeri . ..., , : . ;. , - ..:. : , .. :. . . ...: .. .. . : • ; � .9�lA'f'�S. fla� ;. .:... ....:.. .. - 7 �ii�'ftYNE.77N�i8c= _... . :,. - ., , ;: ,. . . ; . . � .. ;: ; ;. _ , . .. .... _ ., .. ..: _.: ; : . _ . .. . __. ,. . .. _: . ; .: -, , , _. .. -. . , , .. ; �: , . .. � , .. .. , .. ... . .. . � , ' — 26 i ; ..... ., .. . ,... ... .. i . .. : . .. . , j ..._ Prb�ect S� 1756. , , . . . . . : : -: : . . 10 gu �007 . . : ' � _... . :. , .. : . u r . . � �: .: .. _ . . 1 �.: s � :... ... . _.. , ..... .. . . j ... .......... . ;... . . . .:: .:..:..::...: .. � . ,. : ......,. � �. : .. :: .:: . : � �: ,. . . - .. :. :. :. .' . :: ,.:.::. - ,. _ .. . . ....: ..:.. . , ...... . `:'' .: ' :: �°: :� ... ,:. . .. . . . . . . . . .... .. :: . .. . ,.. . .. ..... . ....:... ....:. ; '' =. , -.;: -; SiCeTlari::Fig�ure 1 : :: ;:. .........::.:. , . . ... .. ,:.,: : �: . � ' : �' �io rii�� Lo;s:. 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(hores facing avwra) � ; , . . . � � mi,rar'osrope. : . , , :.: .. _ . � :. .: : ;` .... . :....... , ..., ..: . ::... . , .. . ...., . � :- : .:.......... ..... .. _ ,... �... , - - .: . _ . - - . . . .. r" �rin _ - , ,; . . .... , . _ . , ;. s ,.... :. . . . ,-�-w-- .. . . � , .. ,_..._...� , , . .. . . . 4" rrliit. - 4" rt�Iti : ; . : . .. . .•....: . . - .-..:.8inche5::`:.:-:°` ,. ; , ., . ,. .: :... , :: .. .... :. , ... _ , , .. , . • ; :. � � � • . PIER : , � ' ; �. °.::.:. _.... • ,. . .;_� , _ . .. _ , , ;:. _ , . ....... ..... .....?. � . _. . ,... . : , - - - . . . - . -.......:: . : ....: . . . .. ... .. .:. .. .. ..�.:..: � - , ... . ... ... : . . : . . .. . ., : .- ..:..:.... . .... . .. ..... . ; ;.:. _.. , , .:. .. ..... .. . ....:: : , WAYNE �ING & A55OCIt�TES i�c, i=OUNRA7tON D�2AlN �igure No ::� . ��07�CFiNICAL G(7N5U4TANT5 5c�le: N(A Page No. ?3 ; � � � _:: ' I ; . s: .. . , ; ; , , ; 1_32 i � � � Attachment 3 ; � ' Project No. 2712 � . 28 December 2009 � Mr. Chi Nguyen � 3465 Suncrest Avenue ' San 7ose, CA 95132 � I Subject: SUPPLEMENTAL RECOMYIENDATION � Proposed Single Family Reside:nce 22810 Mercedes Road � . Cupertino, California References: 1) Geotechnical Investiga� ion By Wayne Ting & Ass�>ciates, Inc. . Dated 10 August 2007 � 2) Retaining Wall FoundaEion Excavation Observation . By Wayne Ting & Ass��ciates, Inc. . . Dated 22 September 2C48 Dear Mr. Nguyen: � In accordance with your authorization, Wayn : Ting & Assoeiates, Ine. (WTAl) has completed a site reconnaissance and review of references 1 and 2 to provide further recommendations for the � --- - -- ----- . _ _ - project site. _ _ _-- ---- -- --- ---- --. _ __ . SITE DESCRIl'TION AND PLANNED DEVELOPMENT Presently, there are four retaining walls at the �ite and shown on �igure 1, site plan. Two are in the t very top slope of the site, along the south pro� erty boundary and that is the new retaining wall that . . � was constructed in year 2008 (reference 2) with city permit and observation records of built with drainage behind the wall. The other iwo ret�ining walls are in the down slope adjacent to the proposed driveway that were previously built without records of observa�t;on. Th'�"wal located on � the north ofthe proposed driveway have exposed height of approximate 6 to 7 feet. The scopes of • � work planned for these two retaining walis are to buiid new retaining walls against the existing two ; walls using drilled piers as well as checking to see ifthere are drainage systems installed behind the � � existing walls. If there are no drainage system s instal Ied then new drainage systems will have to be ' : instalted behind the existing walls. . ' � � .. ... i ! 3 � • � i 1-33 � ; Project No. 2712 28 December 2009 � At the site, there were piers and grade beam f�undation systems that were built by the previous contractor but were not signed off by any engineers or inspectors. The frames on the foundation � have been removed. The previous contractor �.Iso cut into the original slope to create a lave.l pad . with vertical cut walls and built three sided of �asement walls for a garage. Future worlcs for the garage will remove the current basement walis a nd construct new ones in the same places using dril l � piers as support with drainage system behind the walls. The current pier and grade foundation � system will not be removed, however, new f.�undation system will be constructed ne�ct to the existing foundation and be 3 feet dia�neter piers connected with steel beams. Furthermore, it is noted that nearly the entire sttbject site ofthe slope covered with filter fabric for erosion control was observed. DISCUSSI4NS. CONCLUSIONS AND RECOD�NDATIONS GENERAL CCINSIDERATIONS � 1. Based on the results of our review, WTA[ concludes that the subject site is geotechnically . suitable for the proposed development. The proposed development can be constructed provided the � recommendatians presented in this report are in;,orporated into the project plans and specifications. 2. It is recommended that WTAI be given the opportunity to review the grading and foundation � plans and specifications so that comments can be made regarding the interpre#ation and . implem of our geotechnical recommendations in the design and specifications. , 3. It is further recommended that VJTAI be reta ined for testing and observation during grading and foundation construction phases to heIp determ in � thatthe design requirements are fulfiiled. Our firm shoutd be notified at least two worlcing days p�•ior to grading and/or foundation operations on the property. : 4. Any work related to the grading andlor fcundation operations performed without the direct observation of WTAI will invalidate the recom mendations of this report. 5. The recommendations given in this report zre applicable only for t}:� desigtr•�f th� previously described structures and only at the location ind icated on the site plan. They should not be used for any other purpose. , . , i FILI SLOPE � ' • 6. There aze some erosions were observed on the slope (approximately 2:l) located between the . north retaining walls and Mercedes Road. Erosion__control mat and hydro seeding' shou(d be I constructed on the slope. In addition, the high �;xposure of the nor#h.r�taining wall height may not i .. i ' . 2 WAYNE TING & ASSOCIATES, ING S 1-34 i � � i ; , Project No. 2712 i 28 December 2009 ' be accep'table to the City of Cupertino. Theref �re, if Mr. Nguyen needs to construct a fill slope in this area to reduce the height of exposure of t ie wall, the following recommendations should be � used. ! 7. Prior to grading, this area should be strippecl of all organic topsoil. It is estirnated that stripping depths of 4 to 6 inches may be necessary. However, final stripping depths should be determined in the field by the project engineer. This material may be removed from the site. • 8. All f li slopes should not be steeper than 1.`�:1 (harizontal:vertical) provide a geogrid every 2.0 . . feet. The geogrid should be Tensar structural ;eogrid UXHS 15Q0, or equal. 9. A buttress provided in Figure 2(fypical sl��pe detail) shauld be constructed at the base of the existing slope and be excavated a minimum of 12 feet wide and extend a minimum of 3 feet below the stiffmaterials. The exa.ct depth and lateral extent of the key should be determined in the field � by the project engineer or engineering geologi: t. The base ofthe buttress should be graded sloping into the hillside at least 5%. A subdrain should then be constructed atthe base ofthe buttress. This subdrain shall consist of4-inch diameter PVC Rigid Wall SDR 3S perforated pipes covered with a minimum of 12-inch thick of 3/4-inch size of �:rushed rock effectively wrapped with filter fabrics, The subdrain should extend the entire length a Zd height of the uphill portion of the buttress (blank : drain) and a minimum of 12 inches below the base of the buttress. The cflnfiguration of the main buttress and subdrain system shalI permit gravi y flow to a discharge point located downslope of the slope. The recommended subdrain details are provided in Figure 2. � 10. Once the main buttress and subdrain are completed, engineered fill using on-site soils will be plaeed in thin lifts of no more than eight inches in uncompacted thickness. The fill should be � -- - i�vatered or aerated as necessa to a�c a mo isture co three erpent above o timum moisture- ---- - ry P p � and compacted to a m�nimum de ee of relative com action of 95 ercent of the maxtmum dry density as determined by ASTM D1557-02 L�.boratory Test Procedure. : 11. As grading continues upslope, all loose ;;oils or colluvium should be removed and benches � should be excavated horizontally into undis[urbed stiff soils. Benches dimension should be � constructed at a minimum of 3 feet high and lQ feet wide. Upslope fills using the on-site native , materials should be compacted to a minimum r:,lative compaction of 95°/a, at a moisture content 3% above optimum. .,� ..� _ 12. Before work is stopped due to heavy raiis, a positive gradient away from slopes should be provided to carry sarface runoff water away from the slope and to areas where erosion can be ; ` controlled. After the completion of slope grad ng, the exposed cut and fill slopes should be planted . , � with deep-rooted native plants or hydro-seeded to minimize erosion. After grading is cotnpleted and � : WTAI has finished the observation of the wo�•k, no further grading shall be done except with the � , approval of WTAI. Some minor erosion on slopes should be thus requiring periodic � maintenance. � � ,. ... i 3 W,4 YNE TING & ASSOCL9TES, INC. • . � � - I �-35 � i ' • Project No. 2712 � 28 December 2009 i � CALIFORNIA BU.�DING C()DE SIT� CHARACTERIZATION 13. The following design values are base on the ;eologic information, longitude and latitude of the site, . and the USGS computer program (200'7). Fiirthermore, in according to Chapter ib of the 2007 � California Building Code (CBC), the site seismi c design values are provided as follow: CBC Cate� /r�Coef�icient Desi n�ue : - Figure 1613.5.(3), Short Periaf Y10E at 0.2s, Site Class B, Ss 2.5 Figure 1613.5.(4), l.Os Period 1�[CE, Site Class B, S1 0.9 Table 1613.5.2, Soil Profile TyFe, Site C(ass D Table 1613.5.3(1), Site Coeffici�.nt, Fa I.� Table 1613.5.3(2), Site Coeffici�>nt, Fv I.5 . S� = Fa x S, Spectral Response Accelerations 2.5 S = Fv x S,Spectral Response Accelerations 1.4 . S�= 2/3 x S Design Spectral Itesponse Accelerations l.7 S 2/3 x S Design Spectra; Response Acceleratians 0.9 . ** Latitude 37.31361, Longitu�e: -122.07504 FOUNDATION OF THE PROP()SED RESIDENTIAL STRUCTURES 14. Due to hillside condition, the proposed s.ructure may be svpported on a pier and steel beam � foundation. The drilled piers should have a mu �imum diameter of 3 feet and a minimum embedment � of 28 feet below a lowest adjacent grade or"::0 feet into rock whichever is deeper. These piers � should be designed for an allowable skin fricti �n value of 600 pounds per square foat for dead plus . live toad Th is value can be increased by on�:-t for total loads which i nclude wind or seismic forces. Due to the present of fll or colluvii�m, this vatue is only applic,able after a minimum penetration of 12 feet below the lowest adjace:it finished grade has been achieved. Tfie validity of � this value is based on a minimum pier spacin€ of 3 pier diameters measured center-to-center. � 15. Due to the slope gradient and the expansi� e soil, any piers located near or on the slope may be subject to creep loads imposed by the soils. Aii inver�ed triangular pressure dis�ribution of 8S p.c.f. - equivalent fluid weight should be designed a�;ainst the side of these piers along the length in the upper 12 feet of the piers on 2 pier diameters. � . , ,,, �«� j 16. Resistanceto lateral force may be provide�i by passive earth pressures mobilized along the pier � length in the rock below a depth of 12 feet. Passive earth pressures may be computed as an I , equivalent fluid weighing of 350 paunds per cubic foot to maximum of 4,000 p.s.f. For design of isolated piers, the altowable passive pressure �nay be increased by a factor of 2. 17. Depressions at the top of the piers resulti lg from drilling operations ar from any other cause i should be backfilled to prevent ponding of water. Care should be exercised duririg concrete � placement ofthe piers to prevent the concrete fi om spilling arQUnd �thepaer shaft and crea#ing an area 4 WAYNE TING & ASSOCIATES, INC. S � �-36 � . � ; Project No. 2712 • ' 28 December 2009 greater than desired upon which the heaving sc,il may exert excessive pressure. If excess spiilage occurs, the fresh concrete shoutd be removed. [n addition, after completion of the pier driI[ing, the bottom of the pier excavations should be clean ed of excessive loose materials prior to placing the reinforcing steel and concrete. . 18. If groundwater is encauntered, concrete mu st imxnediately be poured after each pier was dril led. 'Water should be displaced by pouring the con �rete from the bottom to the top of the pier using a � � tremie pige. . CONCRETE SLA85 OlY G RADE UNDER THE GAR.AGE 14. To reduce the potential cracking ofthe conc-rete slab, the follawing recotnmendations are made: � a. Due to on site highly expansive clay, concrete slabs at a garage should be supported on a minimum of 24 inches of (:lass II baserock. The rock should be compacted to a minunum of 95 percent relati �e compaction. b. The concrete slab should not b�; doweled into the perimeter f�undation and should � be reinforced as specified by th e Structural Engineer. c. S labs at garage door openings st �ould be constructed with a thickened edge extending ' a minimum of 8 inches into the native ground or compacted fill. R rTING WALL • � 20. Retaining wails ander 12 feet in height shc uld be designed to resist lateral earth pressures from � the bacicfill soils. The lateral earth pressure� presented as an equivalent f{uid weight for both " unrestrained and restrained walls are shown a� follows: - T. �BLE I Slope Inclination Behind Wall Equivalent Fluid Weight � (Horizontal : Vertical) (Pounds Per Cubic Foot) �,� Unrestrained Restrained Flat 55 75 � 2:1 75 95 Earthquakes induced lateral ioads should be taken as that imposed by an equivalent fluid weight of 30 p.c.f. However, the distribution of this lo;id should be considered as a triangle with resultant , force acting at a point Q.6 of the wall height a�ove the base of tlie wa(1. For any surcharge loads including influence pressure of adjacent foundation near the top of the � S WAYNE TING & ASSOCIATES, INC. � 1-37 � � ' Project No. 2712 � � � 28 December 2004 � retaining wall, an additional uniform pressurE; eyual to one-half of the vertical surcharge pressure � should be added for design. � 2l. The above criterion is based upon a sui�icient drainage system to be constructed behind the walls to prevent the build-up ofhydrostatic pressures. The wall drainage system should consist of a gravel blanket with a minimum width of 12 ii �ches and shoutd extend vertically to 12 inches below the gound surface. The top 12 inches should be backfilled with on-site soils ta provide a surface � sea! and be graded away from the wall. Ifthe e:xcavated area behind tha wall exceeds 12 inches, the entire excavated space behind the t2-inch bl�nket material should be backfilled with gravel. The gravel blanket may consist of crushed rocic wrapped effectively with filter fabric. � 22. A 4-inch diameter perforated pipe shoul be placed on bedding at the bottom of the gravel �. blanket adjacent to the base of fhe grade beani ar footing. For basement retaining walls (garage), the perforations should be placed 12 inches below bottom of the concrete slabs. The bedding material sbould be at teast 4 inches thick. T'he pipe should have a minimum gradient of 1.0 percent and should connect to an adequately controllecl outlet facility away from the foundations. Drainage . details are shown on Figure 3. . FOUNDATION OF THE PRUPOSED SITE WALIS 23. The above recommended retaining walls should be supported on pier foundation. The piers should be constructed on a minimum spacing of 3 pier diameters measured center to center. The ' . drilled piers should have a minimum diamete� of 16 inches and a minimum embedment of 20 feet : below a lowest adjacent grade or a minimun� of 14 feet into the underlying rock (Santa Clara Formatioti, whichever is deeper. These piecs should 6e designed for an allowable stcin friction value of 600 pounds per square foat for dead plus live loads. This value can be increased by one-third for total loads which include wind cr seismic forces. This value is only applicable after a minimum penetration of 6 feet below the lo��est adjacent fuushed gtade has been achieved. The • validity of this value is based on a minimum ��ier spacing of 3 pier diameters measured center-to- � center. . 24. Resistance to lateral forces may be provid�;d by passive earth pressure mobilized along the pier length in the rocic below a depth of 6 feet. Pas: ive earth pressure can be computed as an equivalent fluid weight of 350 pounds per cubic foot acti ag on 1.5 pier diameters. � 25. After the pier drilling has completed, tocse ma#erials at the bottom of pier holes should be , removed prior to placing the steel and concret�. � DRI VEWAY . . . . 6 WAYNE TING & ASSOCL4TES, INC. _ �-38 . Project No. 2712 ' 28 December 2009 26. Prior to the beginning of any paving co�istruction, the upper 10 inches o£the subgrade soil . should be scarified and recompacted to 95%oi'the maximum dry density at 3% above the optimum moisture value as defined by ASTM D 1557-C 2 Test Procedure. . � 27. Aggregate Base: Following compaction oi'subgrade, all aggregate base material should ttten be placed and compacted to a minimum of 9` % relative compaction based on the ASTM Test � Procedure D1557-02. 28. 3.0 inches of asphaltic concrete on 10 inct.es of aggregate base material may be utilized. As an alternative, due to on-site highly expansiv� clay, flexible paving stone driveways may be recommended. ': PARK [NG SPACE � 29. It is noted that there are two new parking spaces will be constructed on the north side of Mercedes Road near the existing creek side, di rectly across from the subject site. Ifthe edges of the parking areas to the top the slopes have a minimum distance of 6 feet, no additional soldier pier walls are needed to be constructed for reduc ng soils creeping zones which can cause pavement • cracks. If soldier piers are required, they sho��ld be connected with a grade beam and designed as follows: . 30. The piers should be constructed on an e��ual spacing of 3 pier diameters measured center to center. The drilled piers should have a miniml m diameter of 16 inches and a minimum embedment of 15 feet beiow a lowest adjacent grade. `I'liese piers should be designed for an allowable skin friction value of 30� pounds per square fobt f �r dead plus loads. value can be by one-third far total loads which include winc. or seismic forces. This value is only applicable after a minimutn penetration of 5 feet below the lo�vest adjacent finished grade has been achieved. The validify of this value is based on an equal pier s�acing of 3 pier diameters measured center-to-center. 31. Resistance to lateral forces may be provid �d by passive ear�h pressure mobitized along the pier length in the rock below a depth of 5 feet. Pas�ive earth pressure can be computed as an equivalent fluid weight of 250 pounds per cubic foot aet ng on 1.5 pier diameters. b ��. _ DR AINAGE 32. All downspouts from the roof gutter system should be tied into a closed pipe system and . discharged to an adeauate drainage system. ��urface should be sloping away from the building so � that water will be drained away from the stru+:ture. � � 33. Planted areas should be avoided immediately adjacent to the structure. If planting �adjacent to 7 WAYNE TINC & ASSOCIATES, INC. � � ' -39 , Project No, 2712 � 28 December 2009 t the residence is desired, use of plants that require little moisture is recommended. Sprinkter systems should not be installed where they rr ay cause ponding or saturation of foundation soils. Such ponding or saturation coutd result in un�iesirable soil movement, loss of compaction, andlor subsequent foundation and slab movement. 34. To intercept surface runoffwater, WTAI rf:commends a foundaCion drain system be constructed . along the upper slope foundation perimeter of the proposed structure. The �oundation drain should • be constructed at a Iateral distance of 12 inche� from the foundation and extended a minimum depth of 36 inches below the ground surface.. The r:commended foundation drain detail is presented in Figure 4. The perforated pipe shown in Figure 3 will pass into a solid line pipe at the end drain then be directed to a suitable discharge area. LIMITATIONS AND UN�ORMITY OF CONDITIONS 35. Our professional services, findings, and �ecommendations were prepared in accordance with . generally accepted engineering principles and practices. No other warranty, expressed or implied, is made. . 36. This report is issued with the understanc ing that it is the responsibility of the owner, or his representative, to ensure the information and recommendations contain herein are brought to the attention of the Engineer and Contractor of th e project to incorporated into the plans, and that the . necessary steps are taken to see the contractor and subcontractars carry out such recommendations � in the field. ; _ 37: The conclusio"ns and recommendations c5nfained in this report sYia(1 noCbe considered valic! : after a period of two (2) years, unless the cl►anges are reviewed and conclusions of this report i , modified or verified in writing. Should you have any questions relating to the c ontents of this Ietter, please contact our office at your � convenience. � i Vety truly yours, I WAYNE TING & ASSOCIATES, INC. � r� - ' Wayne L. Ting, C.E. � Principal Engzneer � Copies: 3 to Mr. Nguyen . , 8 WAYNL TING & ASSOCIATLS, INC. ' -40 . � � Project No. 2712 ' 28 December 2009 i APPI:NDIX A Site PI�m. Fieure 1 . Fill S[ope I>etails, Fieure 2 Basement Wail Dr,iina�e Details. Fi ug re 3 Foundation Draiiia�e Details, Fi ure 4 . � � • -� •-� - 9 YYAYNE TING & ASSOCIATES, INC. 1-41 � � ; � � 22810 Mercede IZoad, Cuper Galifornia project �lo. 2712 28 Deccmber 2009 • �'�.-.. � ��`."'�•..,.,,`''",,,�-� � � � '�;. ... •�w. "-��... >i r, i � . i � `Y4`�`'^��. �ti� � _ 1 i� =. f 4 �,�. :l � . �. ' ... _ . \. '�4., t iM �.^!Y�. � � j - .. ....,•.. �.-."'.�',,�=�.»� , '� .. " • .. , . . .:;„.:.;.�.-. 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"'•-•�, '+�••-• ...,,� ^". �.,. �r:.... � �*`y, „�!-y y` ;� 'o +.�` � � . .��wr., ^�.,a"' t . ..•... � �,. �.�_w.c_,,.,. ..� � � �.°'`�-.... i•;,� � � � / � '• ��•'�... � ^ �' .....r_ �'" `."�'�m"fi �...��..._ �,. �•0�1�'�"� � �''w �'�1iC�'"'. �;.. • � . `{`_.:. ` C � � E`• � . ' �*�;�,..w^.,-. . �" " �i- .,.,,,,,�:�• �� ,- �"d�� [ �.ru� . �......,.�:,.........«....�..�..�...-..�...„.`� "r.».� � i• t ' ,_ � {, �.,., "G.,w„-�+.�.��"�^`—;... - %d rwi a1'r G;�;' � S t?.i. s:u ; n �• •---...,.,"'.,�,`'��.';�„�? Y '� : � . Tl �b �� . �'•t.? ,"::�..�y.�..._. . 1 `�.�� . . � � •• • . v R%di 1VLERCEUE ROAI? " WAYNE TING & A554ClATES, ING Site Plan Figure No .1 ...----------...-----._...._ ..___�_..__ ----- ---- --- ..............---......._._........... i ` GE07ECHNICAL EON5UL1'ANTS 5cale:1"=20' f age Nn, �0 � ; � . , i , . ., � . ' . � 1-42 ; 22810 Mercede Road,. Cupertino, California ProJect No . 2712 . 28 December 2009 � TYPICAL FILL SLUPE DETAI�S � - , 3 � � ; 1 - 1.5 Existing bottom of unconfroiled fiil and slide zone i � � � Benches Existing Ground Sutrface � � (See Note 2} � • � � 5°% 3 feet (Typicai) ;r, ' � , q: �min. 5 feet into stiff soils or rock 10 feet Bench (Typica� Keyway {See note 4) Subdrain (See Note 2) 12 feet minimum � SUBDRAIN FOR KEYWAY 12-in m i n imum . � ;� ; �.:�: :.:;::,::: � /%/j//r.i�� ;•�a;: �%��;: �c� :i:� . �::;: �'' �� `�� ;::;:�'s;:� ;. . _ . . _ . . ... _ _ . . —__ - . ____--_—__. _. _ _ �� f: .,�':/�al:'i'!' ':f� i �.�Y . _ _ _. _ _ ;:::;c �;::;e•;;:� �•`:•� 3!4-inch crushed rockwrapped � :'� ;:�� ;:;,; with fifter fabric a minimumof 12 inch '::�:i�; :'`�=```�'''=`' '�t'�`�� '=�`.'�`�'_`'�' Pertorated Pipe (See Nofe 5) s:` ;i;; ::;;�:t ';'' : :�:�:'c�:'; :'�: �:X:' ��. �' � . . :;y; ,�_ �'��•�� r� Ch�.s ��'/% "/�'�i�/%%�i.��" /.� . ,,. 4,� _ 1. Where natural grade is steeperthan 6:1, bench into stiff soil or bedrock as determine by WTAI. � 2. Subdrain should discharge via a closed pipe to storm drain or suitable drainage area. ' '�- FC�yt��y �r3c�t11C{ �Y,t�l�C.t 3f ft7�S� 3 9'Gt;1 ik'�t't) ;��1��' iiOE��a` i?E' �7i:i�CU(:�S �S. L�E.a�l.l't"3ttl�G �)�t �f�"I€3 ti'��. � 4. Geogrid using Tensar UX1500 or equal shou d be placed every 2 feet in verticai height. July 1999 Edition. �• -• 5. Pertorated pipe place perfarations down, PV�� pipe with a minimum diameter of four (4) inches, � conforming #o ASTM D-2751 SpR 35. . � WAYNE TtNG � ASS�CIATES, (NC. FIGURE NO. 2- FILL SLOPE DETAlL Page No. 11 ' -43 � 22810 Mercede Road, Cupertino, Califomia Project No. 2712 28 December 2009 :iY1f�';.,{ ".li ,'f'' =?. . � :;; �: :t�t��.i�e;:so�i :::::::::::::: � :;:: ::�: • . � 12 inches : ::r;::� ;:; ;.'�,�i,.�%.,�... �.:� • •::•::::,v :•:;•::•::• \ '�:'s,'ti�e�::::::::;::;: �::::::: `:: \ :r: :::,�: �;�• � �` .�s�, s s s� :�• � . : :e'�r'�r ��,,�� rr�A�:�'s < r i�Q � r �....�. .�� :� . : . ' `<�(''( :,r eac a . � `a�e : : : , . . , c .. . , ` } , }i `�.��+,� ,`' � ' i . � ' � ' � '` : • � :,: �:} < r <'i 5 i L t�� . . � ,rlt`',,},: 4,2? '• J1y,•, , . ; �r.�<-;�t�:�.r��:r;°� �• ,•,s<�- : Filter fabric >`�.`>',i :: t r r>�Y/�a t o'� . .� ' � i i�l y��R� "< s � ,�;li t � ?':.1.)�i }' i i�J !�. v I i Y ,� yi';� f �f �t > )�.�s,'�' « ' .�S i.�t,^� �..�.yi.�I�`''�:`�;l`.��;�=�it � ' �t�r . .�x' 'r' 'y'� . �s �` � ��lJ�3�4> Y 1 ��r�,ala=a�5 a • �1'�L�� ♦ z�C •: : i ' r � f �'.�i �. '�� -. � .'<'. o`�' . e 1 ��e�e ,� < � \ . � ��_:�� : v/ �� , � f f ' . � r ie� t : :'�t�tr'r.'r<f�> : f "7�v i�Y Y J t�t ' �,�� ♦ \,1 t_t�� • � t 1 • \ �<�<�<=<'< .?��'�� t x s�s� 't} � ' �� - ,. � �i�:�f 1 � . }ji�: : l : t l v�(� '^ t�f + l ' � } •�5�: �i��:�t�� . . �,�,� �� •}♦ � .,`.., �� 4 �1��'• j � �:�: ,�;:;�i;. -- Drainrockwrapped • `� '�'�; ' with filter fabrio " . •�t� K � t ' �� `!. . . ^ � . � • t ' : . e�`�,'+ > : : � t�� . .� � ```�`�` 6" minimum from ��. I 1„ I 1 ;;`tc��,;`;;;<:: bottomoff0oting � � 4 Diameter perforated � 1 �:. :. >:-'>'�� or grade beam � � � pipe with perforations � � '` •`.''`'. � � facing down � � 'i'� : :�°`'. i � f �'< <�..•r� � " . I y ! I � � °,�°,;°;;,,;,•�'�: 4�� minunum � a � � a � . 4" 4" i i i i min min i i i i i i i i �, _ — �, " �, � �� . _ �� _ � � . .. -� - Note: Bottom ofthe subdrain trench ancl pipe should be sioped at least 1.0 percent. WAYNE TING & ASSOCIATES, INC. Drai��age Behind Retaining Wa1l Figure No. 3 _.__._ ___ _. _� —. ... ___ . : GEOTECHNICAL CONSULTANTS Scale: N/A Page No. 12 � _ � , . � 1-44 . � 22810 Mercede Road, Cupertino, Califarnia Project I�to. 2712 28 December 2009 � GF'ADE BEAM I E ' MEMBRANE such as.� � � Mlradrain, or equal 1 . TOPSO! � (6" min., compacted � to seal surtace) � ! . 1 Crushed Rock � {wrapped wifh ��;��:�<� ��<>�� <t: '�'�'` 1 filterfabric) �>;:`,`=`': `�`•` �-`': : :�<�: � :•.�: `t 4}M1 <St�� : i T`�Y . < .•.��. . = � < minimum 38.0" 1 FILTER FABRlC ;�; ; ` :•'<'�:a'�:= :;:;�;r . F�F�t�� :�s�.�e�r�.�•as�r�> , belowthe boftom > � � . � . } >:.�: . ��,��:_�°��;�:� ;.;..,.;.; ofgrade beam � , > . ;:,. �.,.>: 4" PERFORATED P/F �':','�'�`� � ,.,:,< � . . SDR 35 - `�'�'�`'` .'`' 1 (holes facing down) ` ��:;`,:� � � min 9 % slope <-�� ._: . � . ; �,�� :�� :��<�` '��' E 4" min. ;�� `; :; :'<" 12. 0 inches e- - 1 ' 4 min. 4" min. � t � , 1 t ( 1 PIER j � i . � . .� .�� _ . I WAYNE TING & ASSOCIATES, INC. FOUNDATlON URA/N Figure No. 4 . GEDTECHNICAL CONSULTANTS Scale: N/A Page Nv. 93 ' � 1-45 ; � 22810 Mercede Road, Cuperkino, Cafifornia Project No. 2712 28 December 2009 � : ,:: r>; r. ::y;;;;;;;: i-::,;::? :':5 :: ::::::::::::::::;:: • : % �:%.,�r�'„�i�1�:�(�::;;;:';:::;::;:� . �'%i.;; ��'�. ; • ; .. �� •:::;�:;;�:: 12 inches � � ::: i:?�id��,te?�;�:��:=•::%�: ' .�..!S•.1.r.. .,...�::::.:�?:::i•:•:• � �'�:�':� :::��;c��::�::�::::::>::; �::::::: � :c:�:;�: �::::;:=:a;:::::.::: :. :�:::;�:;:�:;<�::�::�: . ..1'. 511� �)� :-�: . S J'��}�i :�' • .�>�� ,i.iy�'. �'A . ; ;l�O; . . , . . ' 'c'. ;r':;:?c'c+t'<' 'e; : < < : : < . . . <'<'. .'� �'<'a': ' ; � �:;:r:'cl.r.•aca. .� r r Y�`. 3 ,;,;�;,�> >_,°>�:;'°�• ;�:'>�. .•.� ,�. �'t•�'i �'�'�'a�� Filter fa.bric > : .+•> > >.>.f . � � a', i :�a ; �{� .>' a a�a s+ o �? r `� ' � .� >�>�>`) 1 ) 1 ir ' >SS�> f 1�5r� '.�t�`��.�s.s. ��i.�[�� `` i�i. c f � . '�,� , �5 ' � •• � • ��<� , ••t'<•' J . ,�;�'''�' A �'�'; �: � . ; �� . �'�•'� � l�f�t�!}F,i��i�l�l (�t,+ � • �t�t�t �,.�: �.b•�� : l ♦ . :�t�if< .:�; rf`1�/, . • itt � ` � t �� `T �� ? \ � ' •�' ''� � \ .� :�T�t�t�?�+� •�'� :�C�f.'r �'}�;�' � . ` 4 ` 1 Y 4 Y 1 ` � r i�� f .,'. ��t '- •;_��s �i� � . L tt�, • � ,�n. � � ��' . � ;<;:;, Drainrock wrapped � � with filter fabric ,�, ;�; '>� > , _ � . �; �. � � �`. � �;� 6" minimum from I I � I I �: bottom of footing � I I 4" Diameter perforated � I t=�:;:.;;;;;�;;;;• or grade beam I I p�pe witli perforations � '.�' .� � �, , ,, , • I I facing down j j ��,�>: ;{;� � I � I I a� I °`r`'. �� ' � � � � � �_;�� 4 minimum I a i i I 4�� ..< 4�� I I I i � � i � min min i i i i . i i � � � � � �>�J � `�.��' � � `- -' . � i �,. ...� _ . � . � , ' Note: Bottom of the subdrain trench and pipe should be sloped at least 1.0 percent. ' , . , WAYNE TlNG & ASSOCIATES, INC. Drai��age Behind Retaining Wall Figure No. 3 - �GEOTECHNICAL C4NSULTANTS Scale: N/A � Page No. 12 ( -. I . 1-46 ; • 22810 Mercede Road, Cupertino, California Project No. 2712 28 December 2009 ' GRA, 7E BEAM � � 1 � MEMBRANE such a � . Mlradrain, or equal� � - TOPSOI � (6N min., compacfed � fo sea! surface) � . . � • ! Crushed Rack � (wrapped with ��•<-:•<><s<; ; ;<:�:��. = :�<•<°,��-<�<•�°�: 1 . fiJfer fabric) ' ; '.'<><>.i: �`�`�'�`�' 1 ' ��• ♦ y ��' y '. ; '�s. `. r�> ' y `� .' : .. � � FlLTER FABRIC y'''' ::;:;�;_':':': minimum 36. D ; '�" `�' ` t ��'•'°'` below fhe boffom � �.•�•,� �;;:;,;,�.,,;...� . ��'�'�` �` �` �' �'��` �'��;°'��'�'-'� of grade Beam � F��F�' . > ��i ` > ' 4• PERFORATED P!P }t, > : �� , ' .,i, �"' '` ` ` ; ) � �<�,�9 S�S�C�S � j SDR 35 � �� '� � l ;.+ �t• �. Y r ' {holes facing down) = :� � �`�" min 1 % slope ° ;�; ' �` f. -�': ��: t : . . ° �: � ,..� . : .�.2<y. .��.�:>;>;>�:: :. ., >�',><<;��•�� '�' 1 Z. 0 inches 4 min. ; �;°:�:=;{> i;:°` ',:� ;,_.> I t-- ' � 4" min. 4" min. I : 1 i � 1 . � : PIER � i . � i i ' i � ,a, �a,,. _ : I ; i . � •, I �. i WAYNE TING & ASSOCIATES, INC. FOUNDATION DRi4lN Figure No. 4 � ; GEDTECHNICAL CONSULTANTS Scale: N/A Page No. 13 . ` ; � 1-47 � ' COTTON SHIRES AND ASSO��IATES INC Attachment 4 � , CONSULTING ENG INEER S AND GEOLOGISTS july 27, 2010 C4060G TO : Gary Chao Assistant Planner CITY OF CUPERTINO 10300 Torre Avenue Cupertino, California 95014 SUBJECT : Geologic and Geotechnica] Review RE : Nguyen, Proposed Residen�:e APN 342-22-044, Mercedes [�oad At your request, we have compl �ted a geologic and geotechnical review or the subject application for residential construction, using: • Geotechnical Investigation (repori ), prepared by Wayne Ting and Associates, Inc., dated August 10, 2007; • Supplemental Recommendation (.etter-report), prepared by Wayne Ting and Associates, Inc., dated December 2��, 2010; • Architectural Plans, including: Sii e, Ploor, Roof and Garage Plans, Elevations and Sections (6 sheets, various sca les), prepared by Chi Nguyen, dated June 30, 2010; • Landscape Plans (2 sheets, 8-scale) . prepared by Michael Arnone, dated, January 20, 2010; • Site Plan, Foundation Plans, Four dation and Retaining Wall Details (4 sheets, various scales), prepared by John C)u and Associates, Structural Engineers, dated November 13, 2003; and • vrading and Drainage Plan (1 shFet, i0-scale), prepared by Westfaii Engineers, Inc., dated June 2007. In addition to the above ref ere �ced documents, we have reviewed pertinent technical data from our office files, atten�ed a recent meeting, and have had discussions with the Project Geotechnical Engineer. DISCUSSION 1'he applicant proposes to constrL.ct a new resid�nce in the central portion ot the property. It is our understanding that a��esidential foundation was constructe� at the site approximately 5 to 7 years ago, but was nc�t permittea or inspected. The applicant �roposes to construct a new foundation that does nc�t rely on the existing foundation for support. Northern California Office Central California Offiice 330 Village Lane 6417 Dogtown Road Los Gatos, CA 95030-7218 San Andreas, CA 95249-9640 (408) 354-5542 • Fax (408) 354-1852 (209) 736-4252 • Fax (209) 736-1212 www.cott �nshires.com f - � ;� Gary Chao July 27, 2010 Page 2 C4060G During construction of the foundazon elements, illegal grading was also performed in the southeast corner of the lot, resulti ng in potentially unstable cut slopes. Retaining walls have been constructed to help sup� ort the oversteepened slopes in this area. In our previous review report, dated September 7, 2007, we recommended that engineered plans be generated for the construction of these walls, and that the Project Engineering Geologist and Project Geotechnical Engineer revie�v these plans. We also recommended that the geologic and geotechnical consultants inspect, test, and approve all geologic and geotechnical aspects of the retaining wall c onstruction. CONCLUSIONS AND RECOMMENDEI� ACTION T�Ze xesid+�ntial site is potentially constraine�i bv ��ery steep slopes, surficial soil creep, the potential for shallow landsliding, and the susceptibility of the site to very strong seismic ground shaking. The Project GE�otechnical Engineer has provided supplemental geotechnical design recommendations f or the proposed residential structure, that in general, appear appropriate for the ide�ltified site constraints. These recommendations include constructing a completely new foundation system consisting of large-diameter (minimum 3-foot diameter) piers embeclded 28 feet below the ground surface, and a minimum of 20 f eet into competent bedroc �k materials. This f oundation system will not rely upon the existing foundation elements for support, and the existing foundation is to be left in place. The Project Geotechnical ConsL_ltant concludes that the existing pier-supported foundation system, if left in place, providE�s an improved stability condition for the hillside, and should not adversely impact the ��roposed foundation system. Consequently, we recommend approval of the residential c_esign concept from a geologic standpoint. The following should be performed prior to issuance of building permits for residential construction: 1. Structural Plans - Structural pl�ins should be generated for the proposed residence that incorporate the recommendations of the Project Geotechnical Engineer.. 2. Geotechnical Plan Review - Th�� applicant's geotechnical consultant should r�view ar�d a��rove aiI geotec�ulic aI aspects of the deveio�.ment pians (i.e., sit: preparation and grading, site drair.age improvements and design parameters for foundations and retaining walls) to ensure that their recommendations have been properly incorporated. The Structural Plans and Geotechrucal Plan Review should be submitted to the City and reviewed by the City sta ff and City Geotechnical Consultant prior to approval of the building permit ap; �lication. The f�llowing should be performec� prior to final (as-built) project approval: 3. Field Inspeetion - The geologic an�� geotechnical consultants should inspect, test (as needed), and approve all geo: ogic and geotechnical aspects of the project �" ��"I COTTON, SHIRES AND ASSOCIATES, INC. Gary Chao July 27, 2010 Page 3 C4060G construction. The inspections sho include, but not necessarily be limited to: site preparation and grading, site surface and subsurface drainage improvements and excavations fo� � foundations and retaining walls prior to the placement of steel and concrete. � The Project Geologist should inspect all pier excavations to assure that adversely oriented planes of weakness are not encountered, and that competent earth materials are e ncountered. The results of these inspections an� the as-built conditions of the project should be described by the geotechnical a�nsultant in a letter and submitted to the City Engineer for review prior to Final I'roject Approval. LIMITATIONS This geologic and geotechnical peEr review has been performed to provide technical advice to assist the City with discretior�ary permit decisions. Our services have been limited to review of the documents prE�viously identified, and a visual review of the property. Our opinions and conclusions are made in accordance with generally accepted principles and practices of the geotechnic, il prof ession. This warranty is in lieu of all other warranties, either expressed or implied. RespE�ctfully submitted, COT TON, SHIRES AND ASSOCIATES, INC. CITY GEOTEC NICAL CONSULTANT 1 John _ . Wallace Princ ipal Engineering Geologist C�F� 1923 Patric k O. Shires Senio r Principal Geotechnical Engineer GE 7;'0 POS:JMW:st 1-SI�' COTTON, SHIRES AND ASSOCIATES, INC. � ARBOR RESC►LIRCES Attachment 5 _ professiona c �rborists and tree care A TREE INVENTOItY AND EVALUATION OF THE PROPOSEI) NEW RESIDENCE AT 22810 MEN.CEDES ROAD CUPERTIN(), CALIFORNIA Sub�nitted to: Les �ie Gross Community Development Department City o f Cupertino 10300 7'orre Avenue Cupertino, ��A 95014-3255 Pre��ared by: Davic� L. Babby Registered Con:�ultingArborist #399 Board-Certified Ma:�terArborist #WE-4001B February 11, 2010 p.o. box 25295, san mateo, california 94402 ■ email: arborresources@comcast.net phone: 650.654.335 I ■ fax: 650.24C .0777 ■ licensed contractor #796763 1-51 David L. Babby, Registered Consulting Arborist February I1, 2010 TABLE 01= CONTENTS SECTION TITLE PAGE 1:0 INTRODUCTION ......., ............................. ................... ... 1 2.0 TREE COUNT AND CO MPOSITION .................................. 2 3.0 SUITABILITY FOR PRESERVATION ............................... 3 4.0 REV�W OF TREE IM]'ACTS ......................................... 4 5.0 RECOMMENDATION� ................................................... 6 5.1 Design Guidelines ................. ........ . .......... ......................... 6 5.2 Protection Measures Befo� e and During Construction . . . .. . . . .... . .... .. 8 . EX HIBITS E�IT TITLE � A TREE INVENTORY TAF�LE B SITE MAP C PHOTOGR.APHS (includE;s photo index) i ' � �-52 David L. Babby, Registered Consulting Arborist � February 11, 2010 1.0 INTP:ODUCTION I have been retained by the City of Cupe -tino Community Development Department to prepare this report in connection with the ��roposed new single-family residence at 22810 Mercedes Road, Cupertino. Specific tasks performed for my review are as follows: ■ Identify trees located within the imrlediate proximity of past and anticipated future construction activities. � ■ Determine each tree's trunk diameter at 54 inches above grade or where appropriate to obtain the most representative sarnple of trunk size; diameters are rounded to the nearest half of an inch. Trees listed with more than one trunk have multiple trunks. ■ Estimate each tree's height and cancpy spread (furthest distance across). ■ Ascertain each tree's health and stru ctural integrity, and assign an overall condition rating (e.g. good, fair or poor). ■ Determine each tree's suitability for preservation (e.g. high, moderate, or low). ■ Assign a number and delineate the �;stimated canopy dimension of each tree; these items are plotted on the map in Exr_ibit B, which is a copy of a survey emailed to me by the project landscape archite:t on 12/31/09 (see E�iibit B). Also, for trees not shown on the survey, plot their approximate tnuik locations on the map. ■ Specify whether any of the trees ar� regarded as "protected trees" pursuant to the Cupertino Municipal Code. ■ Review a report prepared by Advanc;ed Tree Care, dated 11/8/02, for the purpose of identifying which trees were remov�;d from the site since that report was prepared. Also, identify the size and amount o F trees required for installation to mitigate those removed (pursuant to Table 3-1, Section 14.18.185 of the Code). ■ Evaluate tree-related impacts both from past and anticipated future activities. � ■ Obtain photographs of each tree; these can be viewed in Exhibit C. ■ Prepare a written report containing the aforementioned information, and provide recommendations to help mitigate o r avoid anticipated impacts to trees that will be � retained or installed. 22810 Mercedes Road, Cupertino Page 1 of IO City of Cupertino Community Development Departm ent 1-53 David L. Babby, Registered Consulting Arborist Febntary 11, 2010 2.0 TREE COUN7' AND COMPOSITION Tlurteen (13) trees of two various spec_es were inventoried for this report. They are sequentially numbered as 1 thru 13, and i:iclude twelve coast live oaks (#1-10 and 12-15) and one toyon (#11}. Specific data reco�ded for each tree can be viewed in Eghibit A (Tree Inventory Table). Also, their locati��ns are presented on the site map in Exhibit B, and photographs are provided in Exhibit C. Trees #4, 5, 8, 10, 11 and 13 have trurics situated entirely or partially on neighboring properties. Trees #8, 9 and 12 are missing from the �urvey. I have plotted their trunk locations on a copy in Exhibit B, but note that those locations are only approximate and should not be construed as being surveyed or necessarily accurate. Nine (9) trees are considered "protected trees" pursuant to Section 14.18.035 of the City Code; they include #1-6, S, 10 and 12 (i.e. all but #7, 9, 11 and 13). Of these, each is a coast live oak with a trunk ten inches or gre ater in diameter. There is a row of about five coast live oaks to the immediate east of the proposed asphalt parking area opposite the road from the project site; these trees (and parking area) are on the neighboring northern property. 22810 Mercedes Road, Cupertino Page 2 of IO City of Cupertino Community Development Departn ent 1-54 David L. Babby, Registered Consulting Arborist February I1, 2010 3.0 SUITABILITY FO � TREE PRESERVATION Each inventoried tree has been assigned eitt.er a"high," "moderate" or "low" suitability for preservation rating as a means to cum�ilatively measure their physiological health, structural integrity, anticipated life span, lc�cation, size and specie type. A description of these ratings is presented below; note that the "high" category comprises nine trees, the "moderate" category four trees, and the "lcw" category no trees. High: Applies to trees #3, 4, 5, 6, 7, 8,10,12 and 13. These trees have a high potential of providing long-term contribution to the site; appear in, or have the potential to appear in, over�.11 good health; and contain seemingly stable structures. Moderate: Applies to trees #1, 2, 9 and 1:�. These trees contribute to the site, but not � eemingly at significant levels. Their longevity and contribution is less than those of higli suitability,, and more frequent care is needed during their remaining life span. Low: Applies to none of trees. These trees are predisposed to ineparable ]iealth and structural problems that are expected to worsen regardless of ineasures employed . 22810 Mercedes Road, Cupertino Page 3 of IO City of Cupertino Community Developnzent Departr zent 1-55 David L. Babby, Registered Consulting Arborist February 11, 2010 4.0 REVIEW iJF TREE IMPACTS Extensive grading and soil compaction h:is occurred within a significant amount of root area; in some instances, the entire root zon�s were impacted (e.g. trees #1 thru 3), and other instances, a significant grading cut occurre d close and on the downhill side of trees' trunks (e.g. trees #5 thru 13). I attribute thosE; activities to the obvious decline that can be observed in trees #1 thru 4. Because of the existirig landscape fabric c��vering the inajority or all of the remaining root zones of trees #1 thru 4, I am unable to fully ascertain the impacts and root loss/damage to - these trees. To facilitate observations, th� portions of fabric beneath their canopies will need to be temporarily lifted to expose the ground. This work should be performed during a dry period (such as a time when no rain i s expected for two weeks) and coordinated with me so I can visit the site shortly after th: fabric is lifted (the root collars, as discussed below, should also be cleared by then). I also recommend the landscape architect is provided the opportunity to view the groL nd. For trees appearing sufficiently stable and viable to retain, remediation measures disc�zssed below should be followed. To help remediate the impacts, and potentially improve their viability, I recommend the following measures are employed: 1. Sometime in the next one to two �nonths, soil should be cleared 12 to 24 inches from the root collar� of each inve�itoried oak situated entirely or partially on the subject site; the purpose of this work is to minimize the risk of infection by harmful root-rotting organisms. This work must be carefully performed to avoid damaging the trunk during the process (ma ivally performed using hand-tools only), and should be performed under the sLpervision of an ISA (Intemational Society of Arboriculture) certified arborist. 2. Soil fill should also be removed to expose natural grade where within a minimum distance from a tree's trunk of thre� times its diameter. This work should also be manually performed, and care taken to avoid excavating into natural grade. i A"root collar" is the area where the large anchor�►ge roots and main trunk merge, often distinguished by a distinct swelling at a trunk's base. 22810 Mercedes Road, Cupertino Page 4 of 10 City of Cupertino Community Development Departn tent 1-56 David L. Babby, Registered ConsultingArborist February I1, 2010 3. Any root or other damage found tliat requires remediation should be attended to soon following my site visit. 4. Beginning this May, and continuir g through October of this year, supplemental water should be supplied to the r�ot zones of inventoried trees. Refer to the watering recommendation in Sectioii 5.2 of this report for further instructions. Note that further decline of the impacted lrees is possible regardless of adherence to the recommended remediation measures. Con �equently, I recommend an additional site visit in two years to reevaluate their condition, ;ind assess the likelihood that they can perform for the long-term. My review of the 11/8/02 report by Advanc ed Tree Care reveals the following seven coast live oaks were removed from the site since that report was prepared. They were located along the top of the property, and were assi;;ned numbers 1 tlu 7 within the 11/8/02 report (note my numbering pattem differs from thf: numbering pattem within that report). As mitigation for their removal, and pursuant to Table 3-1, Section 14.18.185 of the Code, the installation of 13 trees (minimum) of 2��-inch box size shall be installed on-site. They shall be planted prior to final inspection, d ouble-staked with rubber tree ties (may not be necessary for multi-stem trees) with no cross-brace, and all forms of irrigation be of an automatic drip or soaker hose system plaa;d on the soil surface and not in a sleeve (this should be shown on the appropriate detail 'u► the landscape plan). Additionally, to ensure the trees being inst��lled are structurally viable with minimal to no obvious defects, I recommend the proposecl trees are inspected and selected at the nursery prior to delivery, and are identified to hav�; suitable, structures and acceptable lateral root growth. Either the landscape architect and/or I can possibly help in performing this service. Additionally, all new trees shall bf; installed, including necessary irrigation, by an experienced state-licensed landscape contractor or a professional tree company, and performed to professional industry standards. I anticipate future development of this s: te can be achieved without imposing further impacts on trees inventoried and not invent��ried for this report, provided recommendations presented in the next section are carefully fi�llowed and incorporated into the project plans. 22810 Mercedes Road, Cupertino Page 5 of 10 City of Cupertino Community Development Deparm cent 1-57 David L. Babby, Registered Consulting Arborist February 11, 2010 5.0 RECOIVIMENDATIONS Recommendations presented within this ;;ection are based on plans reviewed, and are subject to revisions upon my further ob;;ervations of the ground beneath the existing landscape fabric, as well as my review of tY.e project plans. 5.1 Design Guidelines 1. Recommendations presented in the pr�vious section should be followed. 2. The proposed parking area across i'rom the site shall be established beyond the canopies of the nearby oaks (about five) mentioned in this report (approximately 15 to 20 feet from the nearest trunk); tbis will involve surveying these trees' locations and the proposed parking space area. Overcut, grading and compaction in the direction of the trees shall be restricte�i to 18 inches beyond the curb. 3. The locations of trees #8, 9, 12 and the oaks immediately east of the proposed parking area (see last page of photo:; in Exhibit C) should be added to the project plans. 4. The following information should be added to all site-related plans (e.g. site plan, grading and drainage, utilities, and landscape): assigned tree number; the trunk locations (exemplified by a circle to :�cale of their diameter, such as is shown on the survey); approximate canopy dimensions (these can be represented by one canopy where a group or cluster of trees exi �ts); and a note instructing the contractor(s) to refer to this report for tree protection rneasures. 5. For des'ign purposes, the Tree Protection Zone (TPZ) for any tree should be regarded as the unpaved ground (ex isting or approved for construction) within a distance from its trunk (closest edge) of seven times its diameter. The TPZ is where all additional trenching, soil scraping, overcut and grading shall be avoided. In the event this is not feasible, the impacts c:an be reviewed with me to evaluate whether an alternative TPZ or mitigation measur�: can potentially support a tree's longevity and stability. 22810 Mercedes Road, Cupertino Page 6 of 10 City of Cupertino Community Development Departn, ent ' -58 David L. Babby, Registered Consulting Arbarist February 11, 1010 6. Upon availability, the following plar s should be submitted to me for the review of tree-related impacts: site, elevation;�, grading and drainage, underground utility, planting, irrigation, a.nd lighting. 7. The proposed driveway (to include base material, edging, curb/gutter and forms) should be established as far from tree #2's trunk as possible, and possibly a drystack wall established along the driveway's edge to maintain fill away from the trunk. Additionally, to avoid excavating and damaging roots within its TPZ, construction of the driveway shall not require diggi�.g into or the direct compaction of previous or natural grade (foot-tamping is accept��ble). To help achieve the no-dig and restricted subgrade compaction requirements, Tensar� BX Geogrid (www.tensarcorp.com) is a material that could potentially be usec.. � 8. I also recommend the section of driveway within 12 feet from tree #2's trunk be permeable, including base materials. One potential way is to design trenches using bricks or blocks across the driveway �pan and in a radial direction to the tree's trunk. 9. Any new underground utility and ser� ice should be established beyond a tree's TPZ. 10. All existing, unused lines or pipes w ithin a TPZ shall be abandoned and cut off at existing soil grade (rather than being clug up and causi.ng subsequent root damage). 11. The future stagi.ng area and route(s) c�f access should be shown on the final site plan and avoided on unpaved areas beneatli the trees' canopies. 12. The landscape design should incorporate the following guidelines: a. Turf shall be avoided within a TPZ. Any plant material installed in a TPZ shall be limited, drought-tolerant, and planted at least five feet from their trunks. b. Within the planter areas, I sugs;est a four-inch layer of coarse wood chips or other high-quality mulch is used as ground cover (no gorilla hair, bark or rock/stone). Black plastic or otr er synthetic ground cover should not be used. c. Irrigation for any new plant m�terial within a TPZ should be a low-volume, � drip-type system that does not �ipply water within a distance of approximately five feet from the trunks, appli�d irregularly (such as only once or twice per 21810 Mercedes Road, Cupertino Page 7 of 10 City of Cupertino Community Development Deparm!ent � ' -59 David L. Babby, Registered Consulting Arborist Februmy 11, 2010 week), and temporary (such as iio more than three years). Irrigation should not strike the trunks of newly installed trees. d. In the event trenches for irriga� ion and/or lighting are required within a TPZ, they shall be installed in a radial direction to the trees' trunks. If irrigation trenches cannot be routed as �uch, the work should be performed using a pneumatic air device (such as ar Air-Spade�). e. Mulch should be placed no closer than six inches from the trunk of an existing tree, and three inches from the nunks of installed trees. f. Tilling with TPZs should be avoided, including for weed control. g. Bender board or other edging material proposed within a TPZ should be established on top of existing so .1 grade (such as by using vertical stakes). 5.2 Protection Measures before and during Construction 13. Recommendations presented in Sectic ns 4.0 and 5.1 of this report shall be followed. 14. Assuming that the existing driveway envelope would be used for the primary access� route from Mercedes Road, I recomm,nd a temporary driveway surface is established to minimize compaction, such as ut:lizing the Geogrid mentioned in the previous section of this report; this should bf; established before demolition and remain in place until the driveway is constructec.. 15. For trees #1 thru 4, tree protective fe�icing shall be installed prior to any demolition, grading, surface scraping or heavy f;quipment arriving on site, and established to restrict access into a TPZ. It shall coi sist of five- or six-foot high chain link mounted on eight-foot tall, two-inch diameter steel posts that are driven 24 inches into the ground and spaced no more than 10 Peet apart. Once established, the fencing must . remain undisturbed and be maintainecl throughout construction until final inspection. Note that where within a TPZ, fencing shall be established no farther than 18 inches from the proposed driveway and an.� other proposed hardscape beneath the trees' canopies. NOTE that I can provide a�iiagram of the fencing location once the project plans are submitted to me for my revif:w. 16. Soil shall not be placed or spread �Nhere it can flow downhill into a TPZ. To minimize the risk of this occurrence : or trees #1 thru 4, I recommend silt fencing is 22810 Mercedes Road, Cupertino Page 8 of 10 City of Cupertino Community Development Departrr ent ' -60 DavidL. Babby, Registered ConsultingArborist February I1, 2010 installed along (and against) the uphi:l side of tree fencing. Note that any sediment or soil which accidentally flows or s�,ills within a TPZ shall be manually shoveled, and great care taken to avoid excavati�ig soil and roots during the process. 17. Unless otherwise approved, all devel��pment activities must be conducted beyond a tree's TPZ. These activities include, t ut are not limited to, the following: demolition, grading, stripping of topsoil, trenching, equipment cleaning, stockpiling/dumping of materials, and equipmentJvehicle ope�•ation and parking. Also, tree trunks must also not be used as winch support for trans;�orting or lifting heavy loads. 18. Great care should be taken by con; truction personnel and any heavy equipment operator to avoid damaging tree trunk;;, limbs and branches. 19. Prior to demolition or construction, �.nd once the landscape fabric can be removed within a TPZ, I recommend a four- to six-inch layer of coarse wood chips coarse wood chips ( to 3 /a-inches in size) from a local tree service company is manually spread on exposed ground within the 'CPZs (but not placed within six inches from the trees' trunks). 20. Any approved activity required withi� a TPZ shall be manually performed, and not require heavy equipment or tractors tr3veling or operating on unpaved ground. Great care must be taken during removal of the existing fence and post-holes to avoid damaging trunks, branches and roots c'.uring the process. 21. During any approved trenching or excavation within a TPZ, roots encountered with diameters less than two inches can be removed, but must be cleanly severed at right angles to the direction of root growth. In doing so, sharp cutting tools (e.g. loppers or handsaw) should be used, and the cut� must occur against the tree side of the trench. The severed root end should be coverf:d with backfill soil the same day. . 22. Also during any approved trenching c�r excavation, roots encountered with diameters greater than two inches must not � e cut or damaged, and covered with soil or wrapped in moistened burlap within c►ne-hour of being exposed. If burlap is used, it should remain continually moist until the trench is backfilled. 22810 Mercedes Road, Cupertino Page 9 of 10 City of Cupertino Community Development Departn cent ' -61 ' David L. Babby, Registered Consulting Arborist Februa�y I1, 2010 23. Water shall be supplied to the root z�ne of each inventoried tree. I recommend this occur throughout construction durin€; the months of May thru October, and supplied at a rate of approximately five gallons per each inch of trunk diameter. The water should be applied every two to three weeks via a deep root feeder that is injected 24 to 30 inches into the grade every three feet beneath the section of canopy overhanging the subject site. Anot��er option, although less effective, is to utilize soaker hoses that are "snaked" beneath the same sections of canopy. 24. Any tree pruning shall be perform�;d in accordance with the most recent ANSI standards, and by a California state-licensed tree service company that has an ISA certified azborist in a supervisory r��le. The company selected should also carry General Liability and Worker's Conipensation insurance, and shall abide by ANSI Z133.1-2006 (Safety Operations). 25. Construction of the new fence shall be carefully performed to avoid damaging the trunks and roots during the process. In doing so, the existing holes within a TPZ should be used. If new ones are dug �Nithin a TPZ, they should be situated at least 24 inches from any trunk, and manually dug with a post-hole digger. In the event a root of two inches and greater in diamet�r is encountered during the process, the hole should be shifted over by about 12 inc.hes and the process repeated. 26. The disposal of harmful products (suc.h as cement, paint, chemicals, oil and gasoline) is prohibited beneath canopies or a:rywhere on site that allows drainage beneath canopies. Herbicides should not be u�ed beneath the trees' canopies; where used on site, they should be labeled for safe u; e near trees. Prepared By: Date: February 11, 2010 David L. Babby Registered ConsultingArbor-i��t #399 ��. Board-Certified Master Arbor ist #WE-4001 B �� ,. ' = �A' � : �i`�, `�\ �,,,/ �� 22810 Mercedes Road, Cupertino Page 10 of IO City of Cupertino Community Development Departn �ent 'I-62 David L. Babby, Registered Consulting Arborist February 11, 2010 EXH�IT A: TREE INVE:vTORY TABLE 2281 D Mercedes Road, Cuper•tino City of Cupertino Community Development Depart nent ' -63 ARB4R RESOLIRCES _. , professional consuiting arborists and tre:e care TREE INVE��TORY TABLE � y � �, .. �, 0 0 �� 3 3 �o � :� � ❑ �o � �= c ^ °: `a '°�' °' a`'i a� 3 ° � � � '� o p., � � " U 4 3 Y � +-�' � TJ L O � Q O F E+ .� � � .�-� �G„ a � a O � � 'O � ❑ � �' O O q a �v� �jCA �� U �,� , �, o ,� `° .� ° ro - � � � c� � a � � e�i TREE a •� .°_° •.= °: � ° � ° > o :: °D c`�i o � NO. TREE NAME F�- W� t a rn x C v� :. O � rn x . a Z Coast Live Oak 1 (Quercus agrifolia ) 10 20 25 75% 50% Fair Moderate Comments: Grows at a slight angle tow� rds downhill. Beneath high-voltage electrical wires. Landscape fabric covers much of the root area. Coast Live Oak . 2 (Quercus agrifolia ) 14 25 25 50% 50% Fau Moderate Comments: Has a sparse canopy. Bene� th high-voltage wires and has been reduced in height. Base of trunk abuts existing driveway. There is a depression in the trunk's base (downhill side). Has a buried root collar and poison oak at base. Landsc� pe fabric cover trunk's base and much of root area. Coast Live Oak 3 (Quercus a rifolia ) 20 30 55 50% 75% Fair High Comments: Significant root disturbance by cut, compaction and fill. Much of root azea covered by landscape fabric. Has a sparse canopy. There is a large dead branch hanging from canopy. Coast Live Oak 4 (Quercus agrifolia ) 18 35 35 75% 50% Fair High X Comments: Trunk is situated along and s�ppears to span over the fence line. Has somewhat of a sparse canopy. There is a lazge grading cut and fil beneath canopy. Coast Live Oak 5 (Quercus agrifolia ) 30, 21 40 60 75% 50% Fau High X Comments: This is a very large oak with a base of about 48 inches in diameter. Soil disturbance (cut, fill and compaction) beneath canop} . Coast Live Oak 6 (Quercus agri.folia ) 10 30 15 75% 50% Fair High Comments: Has an old, closed wound at base. There is a soil cut along the trunk's downhill side. There is also fill beneath canopy. A large lur b has failed from this tree. Site: 22810 Mercedes Road, Cupertfno Prepared for: City of Cupertlno Comm. Deve/op. Depart. P�epared by: David L. Ba6by 1 of 2 February 11, 2010 -64 ARBOR RES�LIRCES ._ professional consulting arborists and tree care TREE INVEI�ITORY TABLE � � � � � 'a+ U � O O � ^ � � O C � � �� 0 3 � 3 � o � � � .� � � y o o b y m .°�. ' 3 � .. w= - �v ° o � Q o � � -1 /1 � � i1 � tn H tA Q � � b +�+ ,� � � 0.1 id W U�a1 � O� O � Q cd �a+ i� 't7 U �0 1? �o � ,� � � � � � TREE � � � ;: � " o � o ° o � � � � v� NO. TREE NAME � �' � °' �'' °i a o � o > C 7 • � � ° � o H W x C a cn x: v� � O�. v� ... a c1, 2 Coast Live Oak 7 (Quercus agrifolia ) 5 15 10 75% 50% Fair High Comments: Fill beneath canopy, and a c along the trunk's downhill side. Coast Live Oak 8 (Quercus agrifolia ) 13 25 25 75% 50% Fair High X X Comments: There is a soil cut along the .runk's downhill side. Situated about eight feet uphill from existing fence. The lower trunk was not visi ble at time of site visit. Coast Live Oak 9 (Quer•cus ao ifolia ) 2 10 10 75% 50% Fair Moderate X Comments: Concrete from adjacent fenc: post has been poured at trunk's base. Trunk is about six feet downhill from fence. Coast Live Oak 10 (Quer•cus agrifolia ) 13 30 25 75% 75% Good High X Comments: Trunk abuts and is situated c n the uphill side of existing fence. Toyon 11 (Heteromeles arbutifolia) 7, 5, 4, 2 30 25 50% 50% Fair Moderate X Comments: The multiple trunks are uphill and only inches from tree #12's trunk. Has a sparse canopy. The four trunks span fence line. Fill � nd cut along downhill side of trunks. Coast Live Oak 12 (Quercus agrifolia ) 10 25 20 100% 50% Good High X Comments: Trunk is downhill and only i�ches from tree #11's trunks. Fill and cut along trunks' downhill side. Coast Live Oak 13 (Quercus agrifolia ) 5 15 15 75% 75% Good High X Comments: Trunk is situated along the u�hill side of existing fence. There is a large cut along trunk's downhill side. Lower trunk was not visible during site visit. Site: 22810 Mercedes Road, Cupertino Prepared for: City of Cupertino Comm. Develop. Depart. Prepared by: David L. Babby ? of 2 February 11, 2010 �I -65 David L. Babby, Registered Consulting Arborist February 11, 201 D EX�[IBIT B: SIT E MAP 22810 Mercedes Road, Cupertino City of Cupertino Community Development Depart; nent 1-66 22810 MERCEDES ROAD Cupertii�o, California �� Sk � \ �� k 6' I C' Oi; � 65 � 1 � � � � ` `ti b {�� \ � f �:,�� - ��Y 2 /� ` �, F• M,Zs CE. y � f ' jC • _ \` � � , J o �s � -� ` •. 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Y a9 6 � � • � �. �"� • 5 - / \\ `\ � c Z % . ` ` \ \� 3 y I ` i 5 ' . �' 2 (�'1.� - � . . i tt_ � I �' � � \ i2. 23 - � --�\_� _ � `�_ - - , �,. .:_ n ss•o�• co• � :c_. �_, .� N , � � � . �, '� „ • s�,, ''� z, , � � �,� �- P. C E D` S ? D, �,. ,9 �,- ,,�;'�� , � �.� ,s 0�, . Y33_GC . � � > •° r 1-67 David L. Babby, Registered Consulting Arborist February I1, 2010 EXF[IBIT C: PHOT�JGRAPHS Pho�:o Indeg Page C-1: Trees #1 and 2 Page C-2: Trees #3 and 4 Page C-3: Trees #5 thru 12 Page C-4: Trees #5 thru 13, and oak� east of proposed parking spaces 22810 Mercedes Road, Cupertino City of Cupertino Community Development Depart� nent 1-68 DavidL. Babby, Registered ConsatltingArba•ist Feb�-uary 11, 2010 � 1 rn co 22810 Mercedes Road, Cupertino City of Cupertino Community Developnzent Department Page GI � � � 0 David L. Babby, Register-cd Co�zsztlling A��borist z "' ni .�� y ` [ �� _ � .a_ �'� ( y'Tj �.,,.. . e 'r �� . ., � y � : �� ' ��.�.' 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' �� _ _ . . _ . _ _r' _ _ - _' _ _ . �' I I � '� i �� ,' . . � ,. . _ �_ ' •" ' _ - * � i �. �„�� `�� • �,_ �,�r'� -: ; ; I �;,� , �� ,, ,� , ,, ,, . _ �. -.� _ ,� i i ��i� �4� � �� u� , � I { I I ) I�� 4��tI�� ,'�. � -' ` � F�j� �`� I I 1 iI �1�� I I; � 1� - - �+.,,w.. � � ��'�� , }�� , � ; ��; , . . _ --- � � i , ; _. - . I II 1 , � , j ' I�('I� ( ��I�f�� l�i. li I �IIi�� ----- - - --- � . � \ t '��r �` _� - . ,1�1� 1 ' � __"� � , � � ►�,, ; �;�� ,,�,�., �� ;��,, �� - �� _ -�- �� {��' I�� ' �� I GARAGE DOOR: --:'� ,-,�;:�=-T�- --�,,� . �*-� _-.., �� , i� � � � �� ,�i� i� �>° �. '�: . �-.=.wii_.�...,;�--� � _ �'-'-�_ - ._�...�;�:�_" � � DRI • ;= , i� 1�,�, I `�'.�I ! �,� , �; - _- �� ,,f I, ��, �� t WAINSCOT/ LOWER WALLS �.�_ __ VEWAY. , a•, �� , ,, ��, �� tIw` �� ,; :j, ��i� �� Material= Knotty Alder _ ' . - ,,I � � � �. � �, �, � i, � I�F �,� I�� ,� ,, ��,�l�� 1 74 .. -- -- . �_. � I f �`�� y� y , �� E ,,� ��, �I ; �1� � � �; Finish= Natural � �v �� Material= Stone Veneer - - : _ _ ' _,_ _ t �- , "'" _ �"'' _ i , : ;. � Material= Aspha t u�.l,,.�:�4. ,1�� ,�.,��.,��. �.1.... ..1�� . .. �: �-- r� � - � - � _ ` _ --- . wHEAT - � Color Family= Brown / Tan, R= .28 ` "�-�-T� -"`` ''='�"�- ��'�_ ��--- � _ _ _ ._ ____ -- - _ - - - - �-� - - . _ Attachment 7 , City of Cupertino , ' 10300 Torre Avenue Cupertino, CA 95014 (408) 777-3308 FAX (408) 777-3333 C U P E RT 1 N O Community Development Department , � � �; �� . : ��;.. , . . s .. . .. _. .. _.. . . . .... .. . : _ _ : . . . . , . �� StaffUse Only EA File No. Case File No. PROJECT DESCRIPTION: ttachments Project Title: Mercedes Road Hillside Exception Modification (M-2010-04, EA- 2010-03 � Project Location: 22810 Mercedes Roacl, Cupertino, CA (APN #342-22-106) Project Description: Modification to a Flillside Exception (EXC-2001-07) to construct a 2,223 square foot residencE: on a substandard lot with a slope qreater than 30 percent. Environmental Setting: � The proiect is on a vacant site in a hillside area with a verv steep qrade (averaQe 47% slope). The site is surrounded bv hillside � roperties on all sides. The site to the northeast is an undeveloped sinqle-familv residential propertv (zoned RHS-218); to the northwest is a Citv-owned water tank facilitv (zoned 13A); to the south and west is a senior livinq/care facilitv (zoned BQ): and to the E�ast is a sinqle-family residential property (zoned RHS-218). PROJECT DESCRIPTION: Site Area (ac.) - .292 qr. ac Building Cover�ge - 25% Exist. Building — 0 s.f Proposed Bldg. - 2,223 s.f. Zone — RHS-21 G.P. Desic�nation — Very Low Densitv (Foothill Modified '/2 Acre S/D Formula) Assessor's Parcel No. - 342 - 22 - 106 If Residential, Units/Gross Acre -.20 units/��cre (per Foothill Modified'/2 acre S/D formula) Total# Rental/Own Bdi�ms Total s.f. Price Unit Type #1 1 Own 1 2,223 NA Unit Type #2 Unit Type #3 Unit Type #4 Unit Type #5 Applicable Special Area Plans: (Check) ❑ Monta Vista Design Guidelines ❑ S. De Anza Conceptual ❑ N. De Anza Conceptual ❑ S. Sara-Sunny Conceptual ❑ Stevens Crk Blvd. Conceptual ❑ Stevens Creek Blvd. SW & Landscape 1-75 , ":�. ,�� 3.` _n_> . ,. �:_.. i 'x;�� > Project Site is Within Cupertino Urban Service Area - YES 0 NO ❑ A. CUPERTINO GENERAL PLAN SOURCES OUTSIDE AGENCY DOCUMENTS 1. Land Use Element 36. BAAQMD Survey of Contaminant Excesses 37. FEMA Flood Maps/SCVWD Flood Maps 2. Public Safety Element 38. USDA, "Soils of Santa Clara County" 3. Housing Element 39. County Hazardous Waste Management Plan 4. Transportation Element 40. County Heritage Resources Inventory 5. Environmental Resources 41. Santa Clara Valley Water District Fuel Leak 6. Appendix A- Hillside Development Site 7. Land Use Map 42. CaIEPA Hazardous Waste and Substances 8. Noise Element Amendment Site 9. City Ridgeline Policy 43. Santa Clara County Environmental Health 10. Constraint Maps OTHER SOURCES B. CUPERTINO SOURCE DOCUMENTS 44. Project Plan Set/Application Materials 11. Tree Preservation ordinance 778 45. Field Reconnaissance 12. City Aerial Photography Maps 46. Experience w/project of similar 13. "Cupertino Chronicle" (California History scope%haracteristics Center, 1976) 47. ABAG Projection Series 14. Geological Report (site specific) 15. Parking Ordinance 1277 16. Zoning Map 17. Zoning Code/Specific Plan Documents 18. City Noise Ordinance C. CITY AGENCIES Site 19. Community Development Dept. List 20. Public Works Dept. 21. Parks & Recreation Department 22. Cupertino Water Utility OUTSIDE AGENCIES 23. County Planning Department 24. Adjacent Cities' Planning Departments . D. OUTSIDE AGENCIES (Continued) 25. Midpeninsula Regional Open Space District 26. County Parks and Recreation Department 27. Cupertino Sanitary District 28. Fremont Union High School District 29. Cupertino Union School District 30. Pacific Gas and Electric 31. Santa Clara County Fire Department 32. County Sheriff 33. CALTRANS 34. County Transportation Agency 35. Santa Clara Valley Water District 1-76 �; � �a ; A. Complete all information requested on the Initial Study Cover page. LEAVE BLANK SPACES ONLY WHEN A SPECIFIC ITEM IS NOT ,4PPLICABLE. B. Consult the Initial Study Source List; use tl�e materials listed therein to complete, the checklist information in Categories A through O. C. You are encouraged to cite other relevant sources; if such sources are used, job in their title(s) in the "Source" column next to the question t�� which they relate. D. If you check any of the "YES" response to any questions, you must attach a sheet explaining the potential impact and suggest mitigation if r eeded. E. When explaining any yes response, label ��our answer clearly (Example "N - 3 Historical") Please try to respond concisely, and place as mar�y explanatory responses as possible on each paQe. F. Upon completing the checklist, sign and d��te the Preparer's Affidavit. G. Please attach the following materials before submitting the Initial Study to the City. ✓Project Plan Set of Legislative Document ✓Location map with site clearly marked (w�hen applicable) EVALUATION OF ENVIRONMENTAL IMPA(:TS: c �'�*, c c a � o� e c o �� .� ISSUES: +a " � E- " � �'' � H " � O � ' [and Supporting Information Sources] � c� y c 3.�' Q- y C Z� � dN - �N � v ,�jN I c I. AESTHETICS -- Would the project: � � � a) Have a substantial adverse effect on a ❑ ❑ ❑ C�1 ; scenic vista? [5,9,24,41,44] b) Substantially damage scenic resources, ❑ ❑ ❑ Q including, but not limited to, trees, rock . ' outcroppings, and historic buildings within a state scenic highway? [5,9,11,24,34,41,44] c) Substantially degrade the existing visual ❑ Q ❑ � character or quality of the site and its surroundings? [1,17,19,44] d) Create a new source of substantial light or ❑ ❑ Q ❑ � glare,._which_would_adversely . 1-77 i ----- --------- --...------ --- —.... --------. _..__.�._.._.__...., c �'� �� o o ��+.. � ISSUES: +��e�a ��_'� �� oe�a � [and Supporting Information Sources] a c� N c�3 °' �- y c� z� o�— a�� o d�— — a �n -� 'v� � � � �n nighttime views in the area? [1,16,44] Item C: Existing Visual Character lllega/ Grading The 2003 approval of a single-family home on this property (M-2002-09, EA-2002-08) prescribed that 40 percent of the site be preserved from any construction activity with the exception of the building pad area, vegetation around the perimeter of the hou �e, and the proposed driveway area. However, while constructing the foundation elements in 2003-20(�4, the previous contractor illegally graded the lot beyond the boundaries that were approved by th�� City. This action compromised the integrity of the hillside by leaving behind potentially unstable cut slopes. Existinq Retaininq Walls The new property owner (the applicant) worked �rrith the City to install two retaining walls along the upslope (southern) portion ofthe property in 2007 as an emergency measure to stabilize the area over- steepened by illegal grading. 7he retaining walls r��nge three to five feet in height and are terraced with -- - 2:1(horizontal to vertical) slopes between the twc> walls were constructed to help support the over= steepened slopes in the southeast corner of the Ic t. The previous contractor also constructed two other six to seven foot high retaining walls for the drive�vay towards the northern portion of the lot without obtaining the City's approval. Proposed Foundation System and Retaininq Walls The applicant's geotechnical consultant is proposi �g to construct a new foundation system that does not rely on the existing, uninspected foundation for siipport. The existing foundation will be left in place, which provides an improved stability condition foi� the hillside and should not adversely impact the proposed foundation system. In addition, new ret�ining walls are proposed to be built against the two unpermitted driveway retaining walls; of which m 3y need to be demolished because it is uncertain that they meet the City's standards. The applicant's ge�technical reports were reviewed by the City's consulting engineering geologist who recommended approval with conditions, which will be added to the project's conditions of approval. MITIGATION MEASURES: • The applicant is required to follow the recommendations by the project geotechnical engineer in reports dated August 10, 2007 and Decerr�ber 28, 2009 (Attachment A and B, respectively); and the City's consulting engineering geologisi: in a report dated July 27, 2010 (Attachment C) in regard to foundation, retaining wall, and � ite restoration measures. � The applicant is required to provide a gracling and erosion plan on a topographic survey that shows existing and proposed wall heights, drainage improvements, grading contours, spot elevations, finished floor elevations, slopes, and earthworks quantities to the satisfaction of the Public Works Department. • The applicant is required to provide a scal�d site plan of the proposed structural conditions, showing the exact locations of any propo�ed retaining walls, new drilled piers, foundations, and 1-78 any new earth retention systems, as well ��s elevations and a section showing the proposed structural work to the satisfaction of the E uilding Division. • The existing driveway retaining walls shall be inspected by the project's geotechnical and structural engineer for compliance with City standards and may need to be modified or removed if they have not been constructed to with� tand the anticipated loads. • The applicant is required to provide structural details and calculations for all retaining walls to satisfaction of the Public Works Department. Tree and Landscapinq Removal and Rep/acement During illegal grading, seven protected Coast Live ��ak trees were removed. In addition, most, if not all, native vegetation was cleared from the property.'�hese acts have severely impacted the natural aesthetics onsite. The project landscape architect 3nd the City's consulting arborist have provided plans/recommendations to re-vegetate the site with native, drought-tolerant trees and landscaping. Retaininq Wall Heiqhts/Treatments Since the two high driveway retaining walls towar�is the front of the property were never inspected by the City, staff is recommending that they be mbdii ied or removed to meet City standards. In order to help reclaim the site's natural character, new or rr odified retaining walls shall generally not exceed four feet in height (when applicable) and be sided with natural materials, such as stone. The project landscape architect has indicated in the landscape plan that new and existing retaining walls will be sided with stone MITIGATION MEASURES: • The applicant shall plant replacement trees and follow all recommendations listed in the City's consulting arborist's report dated Februar� 11, 2010 (Attachment D). • A covenant shall be recorded on the propE�rty to preserve and maintain all trees onsite. In the event that tree(s) die, the property owner is required to plant replacements to the satisfaction of the Community Development Director. • The applicant shall plant 24" box trees in front of the house to reduce the visual impact of the project on the downhill properties. • Reasonable • The applicant shall re-vegetate the site wi�:h native, drought-tolerant plantings consistent with the City's Water Efficient landscape Ordinance and the state's Wildland-Urban Interface Fire Area landscaping requirements. • The applicant shall remove or redesign relaining walls which do not meet the City's standards. Landscape screening and natural siding shall be provided to minimize visual intrusion and mass of the walls. Retaining wall details shall be provided to the Planning, Building, and Public Works Departments prior to final project approv�il. • The applicant shall plant reasonable priva�:y plantings consistent with the City's R10rdinance for windows and decks with views to neighboring properties. By incorporating the above mitigation measures, the project would have a less than significant impact in regard to having the potential to substantially degrade the existing visual character or quality of the site and its surroundings. 1-79 item D: Lighting /Glare Exterior building lighting associated with the new development would create a minor increase in the amount of nighttime lighting than the existing vacant lot; however it would not adversely affect views in the area. The project is required to comply with tl�e standards of the City's Outdoor Lighting Policy. In addition, the applicant is proposing exterior mate�ials with earth tones and light reflectivity values not to exceed 60 on a flat surface. Therefore, less tha!i significant light and glare impacts would occur as a result of the project. STANDARD MEASURES: The project shall implement the following standa �d measures: • Lighting on the site shall conform to the (:ity's Outdoor Lighting Policy. • Exterior colors and materials shall not exceed a light reflectivity value of 60 on a flat surface. � _ ?' c �'3 �°- c c I I � V � S = � L � V �O �O I C � ~ � � 0 ~ ;� Q. � Q � � � � d � � O G�J 40 � Z � ISSUES: a in -� �� —� in I [and Supporting Information Sourcesj `�' II. AGRICULTURE RESOURCES: In determining whether impacts to agriculturat are - _ _ _ _ __ _._ . __ _ _ _ _ _ _ _ _- _ _ ____ ___ significant environmental effects, lead agencies may refer to the California Agricultural Land Evaluation and Site Assessment Model (1997) prepared by the California Dept. of Conservation as an optional model to use in assessing impacts on agriculture and farmland. Would the project: a) Convert Prime Farmland, Unique Farmland, or ❑ ❑ ❑ CJj � Farmland of Statewide Importance (Farmland), as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency, to non- agricultural use? [5,7,39] , b) Conflict with existing zoning for agricultural ❑ � ❑ 0 � use, or a Williamson Act contract? [5,7,23] c) Involve other changes in the existing ❑ ❑ ❑ 0 environment which, due to their location or nature, could result in conversion of Farmland, to non-agricultural use? [5,7,39] � � -------.._._.__._..._..._....._..._....__._.__._...._..._._._..__.._.---._....._...._.-----._..._.___.._._._....__.._ .. ._________..._._.._..._...._...._...__.._......._......._....._._........._.... __ .............._._._.._._..._. _......... __....... ... _. l Items A-C: The project site is not located in an area identified as prime farmland, nor is the site being used for or 1-80 zoned for agricultural use. Therefore, the propos��d project will not result in a significant impact on the City's or Region's agricultural resources. � � c � +� � ' � o � +� � u u t++ +, L = u c� c� � '� � � u � C. v '�= � Z � � _ � ;a„ �+ L vl = ISSUES: a N J �� N [and Supporting Information Sources] `" I11. AIR QUALITY — Where available, the significance criteria established by the applicable air quality management or air pollution control district may be relied upon to make the followin�; determinations. Would the project: a) Conflict with or obstruct implementation of ❑ ❑ ❑ Q the applicable air quality plan? [5,37,42,44] . b) Violate anv air quality standard or_contribute_ _ __ _ � _ _ _ _ _ . __0__ ____ __ _Q ___ ___�_ __ ___ _ _ _ _ __. substantially to an existing or projected air quality violation? [5,37,42,44] c) Result in a cumulatively considerable net ❑ ❑ ❑ Q increase of any criteria pollutant for which the project region is non-attainment under an applicable federal or state ambient air quality standard (including releasing emissions which exceed quantitative thresholds for ozone precursors)? [4,37,44] d) Expose sensitive receptors to substantial � � � � pollutant concentrations? [4,37,44] e) Create objectionable odors affecting a � � � Q substantial number of people? [4,37,44] f) Generate greenhouse gas emissions, either� ❑ ❑ Q ❑ directly or indirectly, that may have a significant impact on the environment? g) Conflict with any applicable plan, policy or ❑ ❑ ❑ C✓1 regulation of an agency adopted for the purpose of reducing the emissions of greenhouse gases? Item B: Air Quality Impacts Temporary air quality impacts may result from demolition of the existing structure(s), excavation of soil, and other construction activities on the subject si�:e. Implementation of the mitigation measures listed ' -81 below will reduce the temporary construction im��acts to a less than significant level. MITIGATION MEASURES: The following construction practices shall be impl��mented during all phases of construction for the proposed project to prevent visible dust emission:> from leaving the site: • Water all active construction areas at least twice daily and more often during windy periods to prevent visible dust from leaving the site; active areas adjacent to windy periods; active areas adjacent to existing land uses shall be kept damp at all times, or shall be treated with non-toxic stabilizers or dust palliatives. • Cover all trucks hauling soil, sand, and ott loose materials or require all trucks to maintain at least 2 feet of freeboard; • Pave, apply water at least three times daily, or apply (non-toxic) soil stabilizers on all unpaved access roads, parking areas and staging areas at construction sites. • Sweep daily (or more often if necessary) t� prevent visible dust from leaving the site (preferably with water sweepers) all paved access ro� ds, parking areas, and staging areas at construction sites; water sweepers shall vacuum up exi:ess water to avoid runoff-related impacts to water quality; and • Sweep streets daily, or more often if necessary (preferably with water sweepers) if visible soil material is carried onto adjacent public st�•eets. • The applicant shall incorporate the City's �:onstruction best management practices into the building permit plan set. Item F: Greenhouse Gas Emissions All single-family homes directly or indirectly generate greenhouse gas emissions; however this project is not anticipated to generate significant emissions that could adversely impact the environment. The project site is located within an existing very low clensity single-family residential neighborhood and proposes to construct one single-family home acc�rding to the General Plan's designated Foothill Modified % acre slope density formula. In additior�, the applicant is required to comply with Title 24 (California Energy Code) and is proposing to instit�ate green building measures such as using low or non- VOC paints and recycled building materials. There `ore, the proposed project will not result in greenhouse gases that have the potential to impa:t the environment. STANDARD MEASURES: • • The applicant is required to comply with 1 itle 24 (California Energy Code) for maximum energy efficiency of the proposed home. • The applicant is required to complete the Build It Green checklist and is not required, but highly recommended to institute green building measures. ._._.._.._.._.._...._........._..._...._._......._............_._._........_._.._...._........._._._.._............_...._....-----......._._.__...._.__....._......_.._....__ .... _.._..._...._......_.._....._.__ .........................................._.........................._...... ..................................................................... ........... ............., � � c �. � � • � o � +� �o �� s 3 o f �� c �« fd � � � `o � ;� a ° a a� � N � � � � � � n' N � � � ISSUES: � � a i'n � � � � � in [and Supporting Information Sources] `" IV. BIOLOGICAL RESOURCES — Would the i 1-82 _...__.._�....-----------____......._....--�--�-- — project: a) Have a substantial adverse effect, either � � � � i directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, � policies, or regulations, or by the California l Department of Fish and Game or U.S. Fish and � Wildlife Service? [5,10,27,44] � b) Have a substantial adverse effect on any � ❑ Q ❑ � riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the California Department of Fish and Game or US Fish and Wildlife Service? [5,10,27,44] c) Have a substantial adverse effect on federalljr � � � Q protected wetlands as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, l __ -__ -- _ ____ _ - - � or-other means? 20;36;44 - ---- d) Interfere substantially with the movement of � � � Q any native resident or migratory fish or wildlife � species or with established native resident or migratory wildlife corridors, or impede the use oF native wildlife nursery sites? [5,10,12,21,26] e) Conflict with any local policies or ordinances � Q � � protecting biological resources, such as a tree preservation policy or ordinance? [11,12,41] f) Conflict with the provisions of an adopted � � � � Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? ' [5,10,26,27] Item A and D: Biological Resources No rare, threatened, endangered or special statu�� species of flora or fauna are known to inhabit the site. Item B: Natural Community This site is designated as a Foothill Woodland wilcllife and natural resource in the City's Environmental Resources Element of the General Plan. Foothill V'/oodland resources are characterized by scattered oak trees with an undergrowth in some areas of plants and low shrubs. As mentioned in section I (Aesthetics), the site's natural resources were coripromised after illegal grading removed several existing trees and most, if not all, vegetation. ' -83 MITIGATION MEASURE: As a condition of the project, the applicant will be required to re-vegetate the site with new trees and native, drought-tolerant landscaping (see detailed mitigation measures in section I). The final � landscaping plan shall be reviewed and approved �y the City prior to issuance of building permits. In addition, the City Arborist shall inspect and confirin that all of the newly planted vegetations are consistent with the approved landscaping plan arni are in health prior to the project's final occupancy approval. Item C: Wetlands No federally protected wetlands are present on tF e site. Item E: Tree Preservation Policy The City's Protected Tree Ordinance prescribes re�;ulations for protection of certain trees (such as Oak species) at least 10 inches in diameter measured f�ur and one half feet above grade; trees that are part of an approved landscape plan; or trees that were planted as part of required privacy protection in an R1 zoning district. There are currently 13 trees reriaining onsite, nine of which are considered "protected trees" pursuant to section 14.18.035 of the City's Protected Tree Ordinance. The previous owner's arborist report from 2002 identified ten (10) specimen-size (10" or more in _ . _ _ diameter)_Coast_Live_Qak tr_eQS onsi#Q�aJLof�chich �t�r�r�_quir�sLtszbe Rr_e��r_v�cLunsler_.the_ZOQ3__ _ _ approval. However, the City's consulting arborist found that seven (7) of the ten specimen-size Coast Live Oak trees were removed during the illegal gr� ding operations. The arborist recommends that at least (13) 24-inch box trees be planted as a mitiga :ion measure for the removal. The applicant's landscape architect is proposing to plant five (5) 2�-inch box Western Redbud, six (6) 24-inch box Coast Live Oak, and two (2) 24-inch box Coast Redwood trees for a total of 13 replacement trees. No further tree removals are proposed in conjunction with the project. MITIGATION MEASURES: • The project shall follow the City's consultii�g arborist's recommendations for design guidelines, tree plantings, and tree protective measui es before and during construction protection as prescribed in the report dated February 1:L, 2010 (Attachment D). Implementation of the above mitigation measure �vill reduce impacts to the Protected Tree Ordinance to less than significant levels. � c >. +� _ ' c o � +� �a ca u t++ � v f �a c�''i u � � t c� f° ~' m� o �;� a � a *' �� a•"= *' o y o�o E Z E ISSUES: a N " o�,� � � J � (and Supporting Information Sources] "' � V. CULTURAL RESOURCES - Would the project: � a Cause a substantial adverse chan e in the � � � Q _�....._.__..._.._...----------..._._.._._..--�-�---- g---__.�._..._.._ . .---------__ ---.._...___._....__..__......-- __ -- --------...._..._..-- ----._.__....__.....__..... 1-84 ---------..._.__....._..._____....._.....�..._...__-------�---_..._...------__----------._.._... _____.._..._........_._._......_....._......_....._..........__ .................._..._......._...................._................._.._.........._..._................._.................... significance of a historical resource as defined in §15064.5? [5,13,41] b) Cause a substantial adverse change in the � � � � significance of an archaeological resource pursuant to §15064.5? [5,13,41] c) Directly or indirectly destroy a unique � � � Q paleontological resource or site or unique geologic feature? [5,13,41] d) Disturb any human remains, including those � � � Q interred outside of formal cemeteries? [1,5] FINDINGS: Historic/Archeological According to the City's Archaeological Sensitivity ��lap, the project site has a low potential for the discovery of archaeological resources and is not a�nsidered archaeologically sensitive. In addition, this site is not listed on the City's Historic Resources irventory. The project is not anticipated to impact archaeological or historic resources. However, in the event any resources are found during con their disturbance would be a significant impact. , � � �. +• _ • � o � +� � � � ,r � '+�'.. ,�,�„ ,c � � u c?F- y�� o F' ?=- a Z a °' �� y u� fl' y� E E o .�— � "= o a� �— ISSUES: a'^ J e�i� �= J �' [and Supporting Information Sources] `" VI. GEOLOGY AND SOILS — Would the project: a) Expose people or structures to potential substantial adverse effects, including the risk of loss, injury, or death involving: i) Rupture of a known earthquake fault, as � Q � � delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Refer to ' Division of Mines and Geology Special Publication 42. [2,14,44] , ❑ Q ❑ ❑ i ii) Strong seismic ground shaking? [2,5,10,44] � iii) Seismic-related ground failure, including � Q � � liquefaction? [2,5,10,39,44] ❑ Q ❑ ❑ 1-85 ----- ---._._...._._._._.. --------�-----_ __.___-----...---- ---._..._...-----........ iv) Landslides? [2,5,10,39,44] b) Result in substantial soil erosion or the loss of � Q � � topsoil? [2,5,10,44] c) Be located on a geologic unit or soil that is � Q � � unstable, or that would become unstable as a result of the project, and potentially result in on- , or off-site landslide, lateral spreading, I subsidence, liquefaction or collapse? [2,5,10,39] ! . d) Be located on expansive soil, as defined in � Q � � Table 18-1-B ofthe Uniform Building Code � (1997), creating substantial risks to life or . j property? [2,5,10] e) Have soils incapable of adequately supporting ❑ ❑ ❑ Q the use of septic tanks or alternative waste � water disposal systems where sewers are not available for the disposal of waste water? [6,9,36,39] Items A-D: Fau/t Rupture Zone The City's Geologic Hazard map indicates that the site is located within the Fault Rupture zone; an area of potential surface fault rupture hazard within 3C 0 feet east and 600 feet west of the Monta Vista and Berrocal faults, and within 600 feet of the San Anclreas fault. The site is potentially constrained by very steep slopes, surficial soil creep, the potential for �hallow landsliding, and the susceptibility of the site to very strong seismic ground shaking. The proposed structures on the site would be designed and constructed in conformance with the Uniform Bui ding Code Guidelines for Seismic Zone 4 to mitigate the potential impacts from seismic shaking on the site. Geotechnica/ Review The project geotechnical engineer has provide su��plemental geotechnical design recommendations for the proposed house that include constructing a cc mpletely new foundation system consisting of large diameter pier embedded 28 feet below the groun � surface, and a minimum of 20 feet into competent bedrock materials. This foundation system will no: rely upon the existing foundation elements for support and the existing foundation is to be left in place. The project geotechnical engineer concludes that the existing pier-supported foundation systern, if left in place, provides an improved stability condition for the hillside, and should not adversel�� impact the proposed foundation system. The City's consulting engineering geologist recommends ap��roval of the project from a geologic standpoint and recommends conditions which will be incorporated into the project's conditions of approval. MITIGATION MEASURES • The proposed structures on the site woulcl be designed and constructed in conformance with the Uniform Building Code Guidelines for Seismic Zone 4 to avoid or minimize potential damage from seismic shaking on the site. 1-86 • The project shall incorporate all recomme �dations set forth in the geotechnical investigation prepared for the development by Wayne ""ing & Associates, Inc., dated August 10, 2007 and December 28, 2009. • The project shall incorporate all recomme idations set forth in the geologic and geotechnical peer review conducted by Cotton, Shires � nd Associates, Inc., dated July 27, 2010, including: a) Prior to issuance of building permits, structural plans should be generated for the proposed residence that incorporate the recominendations of the project geotechnical engineer. b) Prior to issuance of building permits, the applicanYs geotechnical consultant should review and approve all geotechnical aspects c�f the development plans (i.e. site preparation and grading, site drainage improvements � nd design parameters for foundations and retaining walls) to ensure that their recommenclations have been properly incorporated. The structural plans and geotechnical plan review should be submitted to the City and reviewed � by the City staff and City Geotechnical Consultant prior to approval of the building permit application. c) Prior to final (as-built) project approv� I, the geologic and geotechnical consultants should inspect, test, and approve all geologic and geotechnical aspects of the project construction. The inspections should include, but nct necessarily be limited to: site preparation and grading, site surface and subsurface drainage improvements and excavations for foundations and retaining walls prior io the placement of steel and concrete. The project geologist should inspect all pier excav��tions to assure that adversely oriented planes of weakness are not encountered, and tt�at competent earth materials are encountered. The -- -- --- ---- - results these-inspections the as-built eonditions ofi the p�ojeet should-be deseribed-by —- the geotechnical consultant in a letter and submitted to the City Engineer for review prior to final project approval. By incorporating the mitigation measures, as per the applicant's and City's geotechnical and geologic consultants, as well as conforming to the Uniform Building Code, the project would have a less than significant impact. � c >. +� � • c o = +� � � u t++ � L t � v u � �= � H u °Q C. y �= °' Z °' }�i � G � y=, ±+ L N � � � � �SSVES: a V1 J � � � � {� [and Supporting Information Sources] `" VII. HAZARDS AND HAZARDOUS MATERIALS — i Would the project: � a) Be located on expansive soil, as defined in ❑ ❑ ❑ 0 ! Table 18-1-B of the Uniform Building Code (1997), creating substantial risks to life or � property? [2,5,10] b) Have soils incapable of adequately supporting � � � Q the use of septic tanks or alternative waste ! I water disposal systems where sewers are not available for the disposal of waste water? 1-87 [6,9,36,39] � c) Create a significant hazard to the public or the � � � Q environment through the routine transport, use, or disposal of hazardous materials? j [32,40,42,43,44] � d) Create a significant hazard to the public or the ❑ ❑ ❑ p � environment through reasonably foreseeable upset and accident conditions involving the I release of hazardous materials into the environment? [32,40,42,43,44] e) Emit hazardous emissions or handle � � � � hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of � an existing or proposed school? [2,29,30,40,44] f) Be located on a site which is included on a list � � � � of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the �ublic-o�.the-enuir-0nment?-[2 ---_ _ __ _ __. _ . __ _ _ __ _. - _ - - --- - --- - ___ _ _ -- -- - g) For a project located within an airport land � � � � use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard for people residing or working in the project area? [ ] h) For a project within the vicinity of a private � � � Q airstrip, would the project result in a safety hazard for people residing or working in the project area? [ ] i) Impair implementation of or physically � � � � I interfere with an adopted emergency response plan or emergency evacuation plan? [2,32,33,44] j) Expose people or structures to a significant risN � Q � � of loss, injury or death involving wildland fires, including where wildlands are adjacent to urbanized areas or where residences are intermixed with wildlands 1-88 Item B: Soils The applicant will be required to submit a soils re�►ort to the satisfaction of the Building Division. If the site is found to have expansive soils, the appropri��te actions will be taken by the soils engineer and Building Division to ensure that substantial risks tc� life and property are minimized. Item C, D, E, F: Hazardous Materials The project is not currently included on the State �TSC's Hazardous Waste and Substances Site List (Cortese List) or other federal, state or local databases. There is no historical information that indicates the location or use of hazardous materials at the subject site. The report concludes that subsurface investi;ation of the property is not warranted. Item J: Wildland Fires The site is located in the state's Wildland-Urban Ir�terface Fire Area. Building construction shall be in conformance with California Building Code (CBC) �:hapter 7A and landscaping shall be approved by the Santa Clara County Fire Department. In addition,lhe applicant is required to install fire sprinklers within the proposed home. MITIGATION MEASURES: • Building construction shall be in conform� nce with California Building Code (CBC) Chapter 7A- Wildland-Urban Interface Fire Area. • ---L-a+�dsearying-s#�all-b�a�p�oved-by t�e3a�ta��a�-a-Eo�r�ty�ir�-0epar#�ent�------ - - _— - _ _ - _ • The applicant is required to install fire spr nklers within the proposed home. � c �. +� � • � o = +� to � u s+�,+ .�,�-, ` s � u � c g= � � v� o a �;-. a Z a *' �E �"=" o � �E E ISSUES: a �' J o�o � c '� �' [and Supporting Information Sources] `" VIII. HYDROLOGY AND WATER QUALITY -- Would the project: �____ � � __ � - � a) Violate any water quality standards or waste discharge requirements? [20,36,37] � b) Substantially deplete groundwater supplies or � � � Q interfere substantially with groundwater recharge such that there would be a net deficit in aquifer volume or a lowering of the local groundwater table level (e.g., the production rate of pre-existing nearby wells would drop to a level which would not support existing land uses or planned uses for which permits have been granted)? [20,36,42] , c) Substantially alter the existing dr aina e � � � Q �—____ _— g _._._—... ._. .......----- _ -------------- ----------- —__ _._., ' -89 ------.______.....----�----. _.�._.._.._...---...------ -- - ----------- -----------..._.__.._�._..__.. ..__...__.._.._._._._..._...._.. _.........._...__....._.._..._..... pattern of the site or area, including through the � alteration of the course of a stream or river, in a manner which would result in substantial erosion of siltation on- or off-site? [14, 20,36] d) Substantially alter the existing drainage � � � � pattern of the site or area, including through the alteration of the course of a stream or river, or ' substantially increase the rate or amount of . surface runoff in a manner which would result in flooding on- or off-site [20,36,38] e) Create or contribute runoff water which � Q � � would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of polluted runoff'' � [20,36,42] f) Otherwise substantially degrade water quality'' � � � Q [20,36,37] g) Place housing within a 100-year flood hazard � � � Q __ _ _. _ _______�rea as ma�p� Qn�_f d�eral Flood Hazard__. __ _ . -- _ _ _ _ _— ----_ -----_ _ __ � _ _ _ Boundary or Flood Insurance Rate Map or other i flood hazard delineation map? [2,38] h) Place within a 100-year flood hazard area � � � Q structures which would impede or redirect flood flows? [2,38] � i) Expose people or structures to a significant risE: � � � Q ( of loss, injury or death involving flooding, including flooding as a result of the failure of a levee or dam? [2,36,38] j) Inundation by seiche, tsunami, or mudflow? � � � Q [2,36,38] Item A, B, F, E: Water Quality and Runoff — During and Post-Construction City, State, and Federal Regulations The discharge of stormwater from the City's municipal storm sewer system is regulated primarily under the federal Clean Water Act (CWA) and California's Porter-Cologne Water Quality Control Act. The San Francisco Bay Regional Water Quality Control Board (RWQCB) implements these regulations at the regional level. Under the CWA, the RWQCB has r��gulatory authority over actions in waters of the United States, through the issuance of water quality certifications. Under Section 401 of the CWA, permits are issued in combination with permits is �ued by the Army Corps of Engineers (ACOE), under Section 404 of the CWA. When the Water Board i�sues Section 401 certifications, it simultaneously issues general Water Discharge Requirements for the project, under the Porter-Cologne Water Quality Control Act. Activities in areas that are outside oi the jurisdiction of the ACOE (e.g., isolated wetlands, 1-90 vernal pools, or stream banks above the ordinary �igh water mark) are regulated by the Water Board, under the authority of the Porter-Cologne Water i�uality Control Act. Activities that lie outside of ACOE jurisdiction may require the issuance of either ind vidual or general waste discharge requirements (WDRs) from the Water Board. New construction in Cupertino is subject to the conditions of the City's National Pollutant Discharge Elimination System (NPDES) Permit, which was reissued by the RWQCB in February 2001. Additional water quality control measures were approved in October 2001(revised in 2005), when the RWQCB adopted an amendment to the NPDES permit for :�anta Clara County. This amendment, which is commonly referred to as "C3" requires all new an�i redevelopment projects that result in the addition or replacement of impervious surfaces totaling 10,0C�0 sq. ft. or more to 1) include stormwater treatment measures; 2) ensure that the treatment measures be designed to treat an optimal volume or flow of stormwater runoff from the project site; and 3) er�sure that stormwater treatment measures are properly installed, operated and maintained. A new NPDES construction permit was adopted b�� the RWQCB on September 2, 2009, and a new Municipal Regional Stormwater NPDES Permit wa � adopted on October 14, 2009. The City has developed several policies that implement Provision C.3 of the NPDES Permit, requiring new development and redevelopment projects to include specific construction and post-construction measures for improving the water quality of urbaii runoff. The City's Post-Construction Urban Runoff - - P-alicy-established-genera�guidelines and-mir�imur��est-Managem�ntP-Kactices-�BMPs�-forsperified---- ------- --- - - - land uses, and includes the requirement of regula • maintenance to ensure their effectiveness. Implementation of these Policies will reduce pote itial water quality impacts to less than significant levels. New Construction The construction of a single-family dwelling on a vacant site will result in some increase in the water impermeable surface and surface runoff. Project clrainage shall be provided to the satisfaction of the Public Works Department. The project site shall b�� served by onsite storm drainage facilities connected to the City's storm drainage system. Since the stoi m drain system will be within the City's right of way, the design must be constructed per City standard�;. The applicant shall obtain a storm drain easement from the neighboring property prior to issuance oF a grading permit. The site drainage and storm drain construction will result in a less than significant er�vironmental impact. Implementation of the following mitigation measiires, consistent with NPDES Permit and City Policy requirements, will reduce potential construction i rpacts to surface water quality to less than significant levels: MITIGATION MEASURES: Prior to Construction • Project drainage shall be provided to the �;atisfaction of the Public Works Department. • The project site shall be served by onsite �;torm drainage facilities connected to the City's storm � drainage system. Since the storm drain system will be within the City's right of way, the design must be constructed per City standards. • The applicant shall obtain a storm drain e��sement from the neighboring property prior to issuance of a grading permit if necessary. 1-91 • Prior to the issuance of a Building Permit, the applicant must provide details of specific Best Management Practices (BMPs), including, but not limited to, bioswales, disconnected downspouts that drain to landscape area�;, direct roof runoff into rain barrels or cisterns for onsite irrigation reuse, pervious paving materials and native/drought-tolerant landscaping to reduce impervious surface areas, project 3reas should be dry-swept routinely and onsite litter should be picked-up and disposed of pro��erly, onsite inlets and catch basins that area stenciled "No Dumping — Flows to Bay," etc., to the satisfaction of the Director of Public Works. • The project shall comply with Provision C.3 of NPDES Permit Number CAS612008, which provides enhanced performance standarcls for the management of stormwater of new development and redevelopment. • The project shall comply with applicable provisions of City Policies which establishes guidelines and minimum BMPs for all projects and p�ovides for numerically-sized (or hydraulically-sized) TCMs for projects that create and/or repl �ce 10,000 sq. ft. or more of impervious surface or are considered a"Land Use of Concern" and :!) Post-Construction Hydromodification Policy which requires the incorporation of ineasures tc� control hydromodification impacts resulting from new development and redevelopment pr��jects where such hydromodification is likely to cause increased erosion, silt pollutant generaticn or other adverse impacts to local rivers and creeks. Construction Measures • Prior to the commencement of any clearing, grading or excavation, the project shall comply with the State Water Resources Control Board's Natioral Pollutant Discharge Elimination System (NPDES) -- -- - �enerar ons ruc ion c ivi ies ermi�,��ie sa is ac ion o Director as follows: 1. The applicant shall develop, implemeiit and maintain a Storm Water Pollution Prevention Plan (SWPPP) to control the discharge of stormwater pollutants including sediments associated with construction activitie�; 2. The applicant shall file a Notice of IntE�nt (NOI) with the State Water Resources Control Board (SWRCB). • The project shall incorporate Best Managerr ent Practices (BMPs) into the project to control the discharge of stormwater pollutants includin;; sediments associated with construction activities. Examples of BMPs are contained in the publication e/ueprint for a C/ean Bay. Prior to the issuance of a grading permit, the applicant r�ay be required to submit an Erosion Control Plan to the City Project Engineer. The Erosion Cont��ol Plan may include BMPs as specified in ABAG's Manual of Standards Erosion & Sediment Control Measures for reducing impacts on the City's storm drainage system from construction activities. For additional information about the Erosion Control Plan, the NPDES Permit req�iirements or the documents mentioned above, please call the Department of Public Works. • The project applicant shall comply with the Ci�:y of Cupertino Grading Ordinance, including erosion . and dust control during site preparation. The following specific BMPs will be implemented to prevent stormwater pollution and minimize p��tential sedimentation during construction: a) Restriction of grading to the dry seasc n(April 15 through October 15) or meet City requirements for grading during the r;�iny season. � b) Utilize on-site sediment control BMPs to retain sediment on the project site; c) Utilize stabilized construction entrances and/or wash racks; d) Implement damp street sweeping; e) Provide temporary cover of disturbed surfaces to help control erosion during construction; f) Provide permanent cover to stabiliz�� the disturbed surfaces after construction has been completed. 1-92 Item G, H, I, J: Flooding Based on the FEMA flood insurance maps for the i:ity of Cupertino, the project site is not located within a 100-year floodplain and would therefore have n� impact on 100-year flows. The project would not expose people to flood hazards associated with the 100-year flood. The site is not subject to seiche or tsunami. .................................................................._...................... ............................................................................................................... ._.............._....... ........._............._....._. ................... .............................................................................. ....................................................... .................................. ..... ..., � � c c ' c � � � �� s c'� � t �� e�o c�. N ra � o �;� c. Z O. �; � E � � �, °' N � E E ISSUES: � � a i'n - ' � � � � in [and Supporting Information Sources] `" � IX. LAND USE AND PLANNING - Would the projectc a) Physically divide an established community? � � � � [7,12,22,41] b) Conflict with a applicable land use plan, � � � Q _ _ _------ ---- ------- -- -- ------ --- — - - _ - ---- _ _ - --- -- - _ -- - policy, or regulation of an agency with jurisdiction over the project (including, but not limited to the general plan, specific plan, local coastal program, or zoning ordinance) adopted for the purpose of avoiding or mitigating an environmental effect? [1,7,8,16,17,18,44] Item A, B: Land Use Projects that have the potential to physically divice an established community include new freeways and highways, major arterials streets, and railroad IinE�s. The proposed project will not physically divide an established community, and the project is consist�nt with the site's General Plan Land Use designation. The proposed project complies with developmeni standards and policies required by the City's General Plan and Residential Hillside (RHS) Ordinance in o to avoid possible impacts to surrounding land uses. � c � +• � ' c o � +� to �� s+�+ � L t � v u C;_ � y� p�p � ~:� Q. Z Q- �,�, � � � ;� 'a_ Q' v�i � � � ISSUES: a`� J o � c J `" [and Supporting Information Sources] `" X. MINERAL RESOURCES -- Would the project: a) Result in the loss of availability of a known � � � Q 1-93 mineral resource that would be of value to the �� i region and the residents of the state? [5,10j b) Result in the loss of availability of a locally- � � � � important mineral resource recovery site � delineated on a local general plan, specific plan or other land use plan? [5,10] Item A, B: Mineral Resources The project site is outside of the Lehigh Quarry ar��a, and will therefore not result in a significant impact from the loss of availability of a known mineral re�:ource. � c . >. +� � ' = o � +� �o �� r 3° L s � � � I c ;= �° ~ � � o � := a Z a *'' � E � := �= ` � � E � ISSUES: a �' J o�o � c J �' [and Supporting Information Sources] `" Xt. NOI�E _- WauFd th� project resalt in: a) Exposure of persons to, or generation of, � � � Q noise levels in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? [8,18,44: b) Exposure of persons to or generation of � � � � excessive groundborne vibration or groundborne noise levels? [8,18,44] c) A substantial permanent increase in ambient � � � � noise levels in the project vicinity above levels existing without the project? [8,18] d) A substantial temporary or periodic increase � � � � in ambient noise levels in the project vicinity above levels existing without the project? � [8,18,44] e) For a project located within an airport land � � � � use plan or, where such a plan has not been adopted, within two miles of a public airport or i public use airport, would the project expose � people residing or working in the project area to excessive noise levels? [8,18,44] f) For a project within the vicinity of a rivate � � � Q ------ -----__.—..-_-._.._._._.....___ _ __ -----_ _ ___p ----__ _ —.._.._ _--- �--- --..._._...... ---- -- - ... _ _.......-----._._. ......_._..._....._.....--- 1-94 airstrip, would the project expose people residing or working in the project area to excessive noise levels? [8,18J Item D: Temporary Noise Levels during Construc�:ion The Cupertino General Plan states that the City's ;�cceptable exterior noise level is 55 DNL long term, and 60 DNL short-term. The acceptable interior noise level is 45 DNL. The General Plan recognizes that the noise levels may not be achievable near major ro�idways. Noise from the construction of the proposed proj �ct could potentially pose a significant impact to the surrounding residential properties. Typical hourl�� average construction noise levels are 75 to 80 dBA measured at a distance of 100 feet from the site cluring busy construction periods. To limit the construction noise impacts on nearby properties, various measures have been incorporated into the proposal. MITIGATION MEASURES: • Construction will be limited to the hours of 7:01) a.m. to 8:00 p.m. Monday through Friday for any on- site or off-site work within 500 feet of any resic ential unit. Construction outside of these hours may be approved through a development permit basecl on a site-speci�c construction noise mitigation plan and _ _ a finding_by the Community Development Direr.tor that the construction__n_oise mitigation plan is_ adequate to prevent noise disturbance of affected residential uses. • Weekend construction hours, including stagirg ofvehicles, equipment and construction materials, shall be limited between the hours of 9 a.m. to 5 p.m. Permitted work activities shall be conducted exclusively within the interior of enclosed bui ding structures provided that such activities are inaudible to existing adjacent residential uses. The developer shall be responsible for educating all contractors and subcontractors of said constr�ction restrictions. Rules and regulation pertaining to all construction activities and limitations iden:ified in this permit, along with the name and telephone number of a developer appointed �iisturbance coordinator, shall be posted in a prominent location at the entrance to the job site. The Community Development Director may rescind provisions to allow extended hours of construction activities on weekends upon written notice to the developer. • The contrector shall use "new technology" power construction equipment with state-of-the-art noise shielding and muffling devices. All internal combustion engines used on the project site shall be equipped with adequate mufflers and shall be in good mechanical condition to minimize noise created by faulty or poor maintained engines or other components. • Locate stationary noise generating equipmerr: as far as possible from sensitive receptors. Staging areas shall be located a minimum of 200 feet From noise sensitive receptors, such as residential uses. • The developer will implement a Construction Management Plan approved by the Community Development Director to minimize impacts ori the surrounding sensitive land uses to the fullest extent possible. The Construction ManagemE nt Plan would include the following measures to minimize impacts of construction upon adjacf�nt sensitive land uses: a) Early and frequent notification and comrr unication with the neighborhood of the construction activities. b) Prohibit unnecessary idling of internal cornbustion engines. 1-95 c) Designate a"noise disturbance coordinator" who would be responsible for responding to any local complaints about construction noise . The disturbance coordinator would determine the cause of the noise complaints (e.g., beginning work too early, bad muffler, etc.) and institute reasonable measures warranted to corre�:t the problem. A telephone number for the disturbance coordinator would be conspi :uously posted at the construction site. d) Delineate the limits of development onsile. e) Discuss construction-staging methods. The construction of the parking area on the north side of Mercedes Road should be considered for use as a primary staging area. f) The plan shall demonstrate that emergency access along Mercedes Road shall not be impeded at any time. g) A garbage/debris container shall be placed on the site to store debris and the project site shall be cleared of debris at the end of every d�y during project construction. The container shall be emptied regularly such that no garbage is visible over the rim of the container. Only one portable toilet shall be permitted on the c:onstruction site. The portable toilet shall be placed on the project site and in the least visible location from Mercedes Road, subject to review by the Building Official. The portable toilet shall be allowed only during the period of project construction and shall be removed imme�iiately after completion of construction. ,.__...._........._------ -----..._...._...------.._._....._.__.._.......__..._.__.._._..------..._._.__......_.... - ----.._._._..------._ ._.._._..._.__.._._._._._.__ _._._.._.__._...—_...__....._...__..._...._...... � c �+ ++ _ •— � o ++ � — _ �'i = �. � t f° � u u - +► � - � _ _ � _ � . �- L � V _ � __ . _ . Q _ _ � _ _ . . .. .. . . . . . .. . . . ..... _ _. ___..__ .._.. _-__ ______- -_ _ _ . _._ __.___.._.. .. . ... _.. ___.__._..__ ............ ..... ..__.�. �__-�. N � � .a ___ C � Z � � � � • � � � � ISSUES: a N J �� -' H (and Supporting Information Sources] `" XII. POPULATION AND HOUSING -- Would the project: a) Induce substantial population growth in an ❑ ❑ ❑ Q area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other � infrastructure)? [3,16,47,44] b) Displace substantial numbers of existing � � � T Q^ ! housing, necessitating the construction of � replacement housing elsewhere? [3,16,44] - � - � � — — -- c) Displace substantial numbers of people, necessitating the construction of replacement housing elsewhere? [3,16,44] Item A, B, C: Population and Housing The proposed project would not induce substanti;�l population growth because it has a net density of .20 DU/AC, which is consistent with the General Plan Land Use/Transportation Diagram designation of Very Low Density (1/2 acre slope density formula). The site is currently a vacant lot and will not displace existing housing or people. 1-96 � c �- +• � • = o = +• � ��i s 3��,�-,, L t � u u ' _ ;� �a F' � � o � ;� a ° a °�,' �E �" � �E Z E ( ISSUES: a N J m� = J � [and Supporting Information Sources] "' I Xlll. PUBLIC SERVICES � a) Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or � physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times or other performance objectives for any of the public services: _- - -- -- --- _ - ___. _ _ _ _ _ - _ _ --- - __ ---- ---- - - _0 _ - - Fire protection? [19,32,44] ❑ ❑ ❑ 0 I Police protection? [33,44] � Schools? [29,30,44] ❑ ❑ ❑ Q Parks? [5,17,19,21,26,27,44] --- -❑ ❑ ❑ — . - -- - ❑ ❑ ❑ Q � � Other public facilities? [19,20,44] __.--.----__ �._._.._.._._..---___ __ � _..__.___.._.._..._____..._.__._.__.__._.__..._ . ..—_.....-----._ _ _ ._..__ _ � ___ ._ .....___.--- _--.--._....._...---._..__._._. .._....._.____.....__.._....� Item A: Public Services � The project site is located in an urbanized area of �upertino, and is served by existing Fire, Sheriff, School, Park and other Public Facilities. No additional Fire or Police personnel or equipment are necessary to serve the proposed project. As requii�ed by California Government Code Section 53080, the project will be required to pay a school impact fee for residential development to offset the increased demands on school facilities caused by the projeci . The project shall also conform to the City's Parkland Dedication Ordinance. 1-97 a��+ C ' � C }+ � ' 3 � � � C ++ �? f L =�' L t V f f C;- � V � Q vf i= Q. Z Q � � � � � i� L {A � � G ISSUES: a � � � � � � � , [and Supporting Information SourcesJ `�' j i i Xl V. RECREATION -- I a) Would the project increase the use of existing � � � Q neighborhood and regional parks or other I recreational facilities such that substantial � physical deterioration of the facility would occur � or be accelerated? [5,17,19,21,26,27,44] � b) Does the project include recreational facilities � � � � � or require the construction or expansion of � recreational facilities which might have an � adverse physical effect on the environment? � [5,44] Item A, B: Recreation The City of Cupertino has adopted the Parkland D�dication Ordinance, requiring residential developers to dedicate public parkland or pay in-lieu fees, or 'ooth, to offset the demand for neighborhood parkland created by their housing developments. Each nevi residential project is required to conform to the ordinance. The proposed project would increase the number of residents on the site. Although the project includes recreational space for new residents, the project �vould add to the residential population using nearby recreational facilities. However, the project is not expected to increase the use of existing parks such that substantial deterioration would occur or be accelerated. ........................................................................................................................................................................................................................................................................................................................................................ ..................................................................... .........� � c ' � +• _ • C o � ++ '++ f = � �' � � � f f�6 L � V F- f9 L ~;F O � � � � � i+ � H � � Z � . ISSUES: a N �� = a [and Supporting Information Sources] `" XV. TRANSPORTATION/TRAFFIC -- Would the project: a) Cause an increase in traffic which is � � � Q substantial in relation to the existing traffic load and capacity of the street system (i.e., result in a substantial increase in either the number of 1-98 ---- - --�--....---- --�----�---------...__....__ ___ ____ __.._.�_..___.......----......_ ..... .........._._._....---...._....._..... _..._..._....._..._._.._._._.._._._._..._.._._.._._.._.. ....._._.........._._._..............._._._. ....__............._.....__...._., vehicle trips, the volume to capacity ratio on roads, or congestion at intersections)? [4,20,35,44] i b) Exceed, either individually or cumulatively, a ❑ ❑ ❑ Q � level of service standard established by the � county congestion management agency for designated roads or highways? [4,20,44J � c) Result in a change in air traffic patterns, ❑ ❑ ❑ 0 including either an increase in traffic levels or a change in location that results in substantial safety risks? [4,?] d) Substantially increase hazards due to a design � � � � feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)? [20,35,44] e) Result in inadequate emergency access? � � � � [2,19,32,33,44] f) Result in inadequate parking capacity? [17,44] � � � Q - _--- __ g) Conflict with adopted policies, plans, or � � � � programs supporting alternative transportation (e.g., bus turnouts, bicycle racks)? [4,34] Item A, B: Traffic The City's Department of Public Works has analyz��d the proposed project and determined that it would be in conformance with the City's Transportation _evel of Service Policy and would not create a significant traffic impact. Item E: Emergency Access The Santa Clara County Fire Department has reviewed the application and did not find that the project will result in inadequate emergency access. Item F: Parking Capacity The proposed project is providing two covered (2-car garage) and two uncovered (driveway) parking spaces, which is in conformance with the City's Parking Ordinance requirement of four spaces per unit. In addition, since there is no available on-street p��rking, the applicant is required to provide paving to accommodate 2 parallel parking spaces along the north side of Mercedes Road. The on-street parking spaces shall be constructed prior to beginning construction on the project and shall be used as a staging area during construction. The road/parking area in the right-of-way in front of the applicant's lot shall be repaired in the event of damage after project construction is completed in accordance with Public Works' standards. The applicant's arborist shall review the plan to ensure that no trees are removed in the right of way adjacent to the proposed on-stre��t parking spaces. 1-99 PARKING CONDITION: The two on-street parallel parking spaces shall be paved with pavers and/or similar semi-pervious paving materials as determined to be acceptable by the (;ity. Final parking plan shall be reviewed and approved by the City prior to issuance of building permits. �;aid plan shall detail final curbing/drainage/slope design to the satisfaction of the Director of Public Works. � c � +� _ ' � o � +� v s� � t° t�p u u ;Fi i� V �C � � � L = V �O Q � c:= m o,o o �:� a a y �► v �. �n Z � � � d �=" � O G�i � � � ISSUES: a N �� -' N [and Supporting Information SourcesJ `" XVI. UTILITIES AND SERVICE SYSTEMS - Would the project: a) Exceed wastewater treatment requirements � � � Q of the applicable Regional Water Quality Control Board? [5,22,28,36,44] b) Require or result in the construction of new � � � � water or wa stewater tre faciliti or -- -- - - --- - -------- --- ---- --- -- -_---- -- -- ---------- - - - -- - _ _ _ _ _ expansion of existing facilities, the construction of which could cause significant environmental effects? [36,22,28,36] c) Require or result in the construction of new � � Q � storm water drainage facilities or expansion of existing facilities, the construction of which coulc cause significant environmental effects? � [5,22,28,36,44] _�_�___�_._.___ — ❑ — ❑ - ❑ Q e) Result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to serve the project's projected demand in addition to the provider's existing commitments? [5,22,28,36,44] f) Be served by a landfill with sufficient � � � Q permitted capacity to accommodate the project's solid waste disposal needs? [?] g) Comply with federal, state, and local statutes � � � � and regulations related to solid waste? [?] .................................................. .........................._................, Item B: Wastewater Facilities " 1 -100 The Cupertino Sanitary District has reviewed the ��roposal and stated that sanitary sewer service can be provided to the subject parcel via Mercedes Aven ae. However, the applicant will have to install a lateral connection from the street to the parcel. Improvement plans shall be reviewed by the Cupertino Sanitary District. The construction of a lateral sew�r line will result in a less than significant environmental impact. � Item C: Stormwater Drainage:Facilities The applicant shall provide stormwater drainage to the satisfaction of the Public Works Department. Since the storm drain system will be within the Ci1y's right of way, the design must be constructed per City standards. The applicant may be required to ��ttain a storm drain easement from the neighboring property owner prior to issuance of a grading perinit. The construction of new stormwater drainage facilities will result in a less than significant environmental impact. �. x XVI1. MIANDATORY FtNDINGS OF�5IGNI�ItA,NCE � � `('�o, be comple ed by City Staff� - , . ._ _ a) Does the project have the potential to � Q � � ' degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife -- - - - - - population to 8rop 6 sef =sustaining eve s, - - - - _ _ ---_ _ --- - _ - -- _ _. _ -- - - - - threaten to eliminate a plant or animal community, reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of Ca lifornia history or prehistory? [] b) Does the project have impacts that are � � � Q individually limited, but cumulatively considerable? ("Cumulatively considerable" means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probab future projects)? [] � c) Does the project have environmental effects � � � � which will cause substantial adverse effects on human beings, either directly or indirectly? [] See attachment E for a summary of mitigation measures. ENVIRONMENTAL EVALUATION (To be Completed by City Staff) ENVIRONMENTAL FACTORS POTENTIALLY AFFEC�ED: The environmental factors checked below would I�e potentially affected by this project, involving at 1-101 least one impact that is a"Potentially Significant Irnpact" as indicated by the checklist on the following pages. ❑ Aesthetics � Agriculture Resources � Air Quality � Biological Resources � Cultur��l Resources � Geology /Soils � Hazards & Hazardous � Hydrol �gy / Water � Land Use / Planning Materials Qualit� � Mineral Resources � Noise � Population / Housing � Public Services � Recreation � Tra nsportatio n/Traffic � Utilities / Service Systems � Mandatory Findings of " Significance DETERMINATION: On the basis of this initial evaluation the Environrr ental Review Committee (ERC) finds that: � The proposed project COULD NOT have �� significant effect on the environment, and a __ _ _ _ .. _ NEGATIVE. QECLARgT_I.OlV�ecilLh�pte�ared.----------_ _--------------- � Although the proposed project could ha� e a significant effect on the environment, there will not be a significant effect in this case bec:ause revisions in the project have been made by or agreed to by the project proponent. A MITIGATED NEGATIVE DECLARATION will be prepared. � The proposed project MAY have a signifi�:ant effect on the environment, and an ENVIRONMENTAL IMPACT REPORT is rec uired. � The ro osed ro'ect MAY have a" oteiitiall si nificant im act" or " otentiall si nificant P p P 1 P Y g p P Y g unless mitigated" impact on the environinent, but at least one effect 1) has been adequately analyzed in an earlier document pursuant to applicable legal standards, and 2) has been addressed by mitigation measures baseci on the earlier analysis as described on attached sheets. An ENVIRONMENTAL IMPACT RE�ORT is required, but it must analyze only the effects that remain to be addressed. � Although the proposed project could ha��e a significant effect on the environment, because all potentially significant effects (a) have be�n analyzed adequately in an earlier EIR or NEGATIVE DECLARATION pursuant to applicable sta ndards, and (b) have been avoided or mitigated pursuant to that earlier EIR or NEGATIVE DECLARATION, including revisions or mitigation measures that are imposed upon the prc posed project, nothing further is required. � � �� v ff Evaluator Date � �� , � � 'j�( r � — � � — �� / O ERC Chairpers�q Date 1 •-102 P ROJ ECT DA . . APN 3�2-22-044 ZONING RM$-21 LOT AREA (SF) 12,612 NET LOT (SF) 11,650 OCCUPANCY TYPE R-3 CONSTRUCTION V—N. AFES REO'D: NFPA 13D SYSTEM PAqKING 4 ONSRE, 2 OFF511'E APPLJCABI.E CODE CBC. CPC. CMC, CFC, CEC. CUPERTNO's ORDINANCES antl AOOPTED COOES. BLDC WI�L BE FUILY SPRINKLERED IN ACCOROANCE WfTM LOG4L COOES. PRE�/IOUSLY ALLOWED APPROVED PROPOSED USE SINGLE FAMILY RESIOENTtAL SINCLE FAMILY RESIOENTIAL SINGLE FAMI�Y RESIOENTAL FRONT SETB.�CK (FT) 10 (LOWER) 17'8 (UPPER) 38 (FRONT) 41'3 (FRONT) SIDE SETBACKS (FT) 10 14 (El�S�: 14 (WESr) 17'8 (EAS�: 15'6 (WEST) REAR SETBACK (FT) 20 21 (REAR) 33'1 (REAR) BLDC HEICMT (F'f) }p 25 (TMREE STORIES) 18'2 (SINGLE STORY) F1.00R AREA (SF) 3.20♦ 3.008 2.223 LOT GOVERAGE 7G 277C 26X / C.77� PROPOSED SIOE SETB.�CKS ARE NOT PARALLEL WfTH PROPERTY UNES. SEE SITE PIAN FOR DETAILS. EXISTING PROPOSED F.A.R. CONDITION CONDITION CALCULATION BUILDING FOOTPRINT (� 2,515 197[ 1,890 157G 633 SF KITCNEN dc FAMILY PARKING (S� 7,908 137C 1,908 137G 214 SF DINING dc FOYER SIDEWAU(S. PATOS. PATHS... 370 37i 657 �!i 724 SF MASTER SUITE V.NDSC.>P1NG (SF) 8.119 63% 5,437 637[ 64C SF GARnGE IMPERV10U5 SURFACES TOTAL 2.883 227i 7,890 1 37C 2223 SF TOTAL PERV10U5 SURFACES TOTAL 70.027 7B7L 11,022 867G PROJ,�CT TEAM OWNER 3a63 SUNCREST AVE. SAN JOSE CA 93132 CMI NGUYEN (10E) 839-3966 CHI.SCPMOGMAIL.COM GEOTECN 42329 OSCOOD ROAD �A. FREMONT CA 94339 WAYNE TNC (�510) 623-7788 WAYNETINCOSBCC�OBALNET STRUCTURAL KENT SEZEN, 274 E. HAMILTON AVE pC. CAMPBELL CA 9300E KENT SEZEN, CE. SE (40a) 871-727} SEZENSTRUCTLRALOAOLCOM - CIVIL 14383 BIC BASIN WAY, SARATOGA. CA 93070 HARRY BABICKA (408) BB7-024� MARRYOWESTF.COM UNOSCAPE .4RCHITECT 3370 SAMUEL PL4CE. S.�NTA CRU2. CA 93062 � MICMAEL ARNONE (831) 462-4H88 RKNOWNIOMOTMAIL.COM GENERAL CONTRACTOR 1720 OCAU AvENUE. SAN JOSE. CA 93122 AN 00 CONSTRUCTION (310) 208-3733 SPCONSTRUCTION160GMAILCOM I�RAWIN� InlnFx �� ;UL;:��.�° �� `_ �� ' �—�6'rPo � �� L �� — — �� _ /� �� _ ��, -- f b9 i� X � � ch l � S � � ,�' �� -3/q• IP ' _ �_' _ �� + ,: iI / �,-, = _�" ^ / i �� (N)� (ir I / �'' '� . _ � �/ %� �� cN) SS�iREE _ � ' _ _/� � ,- � � �\\ /� a—_ \ G :� � . AA ps , '`�O \ � \\ <M G� + (M TREE SEE lt 8 VATER RUNOFF Z� � �� 3 � 4 " IP ' � � / � /`.'� i ' � � % � � o Q � � i / � . �+' ' �� i�` � 48 �OAK � r � -+; '�'' � N b —%. /.s ..�.- _ i — � ,�� % / ��/ ! --__"_- � � � / ��i � - � -- _ '/` � ` — '`��'- �� - � —� � .-� - f -`�° � %��= "',, "c ----- � i : ' !„ i �6� �� j / �� \ . � �' � � \ G� S cN)� REE y �� \ ,� -� �, / \ ' y'1�''� y� iJ . �� c / % � � � , ` d �. �, �� ` '�.� i�i / y, �� _____\`__ (W SS TREE - �i �� ` � !— `\ '__ _ _ _ `� � � � � — �� \ � � .1� � \ `— `� .., �� -�� -�� , \ 1 , '�it k-�� - � � � � _ —�____ � �' � � '� ��- � \'� \ , _ _ � 1�,-,,, � ��, \ � ` � � �'4 �r vrn .... Site & Roof Plan � �, � .� �,�� r �' , -�- N \\ '� � ' 12 3b9 � � N /� Q �� / / `��._ r / � �,, __ � ' ' \ � � _ � �� --` • t r� � n , � \ � � \ \ \ \ ` _— � _. � I � \ Q� ;?� � , . �� -------_ �� % 2 i i �� .�/ %� �\ . ,J� • - "� �' 1 1 % / �`'c---�__—_.--- ��-__,.,� _.__� \ ' ,-i/�� / ;`,�,EC.�n�,: � 'T �'� ' �' � - � Y .. . ? ' � // . Pi4E. B .:'F' �-" .a:'� /�` � % - , - o-_ , -' . �,u �`'„% / / ,�� F=°r+ D � S �pp,D ME �GE 1/8' � 7 • M � � CHI D. NGUYEN 3465 SUNCREST AVE SAN J05E, CA 95132 408.839.3968 W � � � � � W OO G�� 0 W W Q � W � V N �W .� �V � � ,,, O - � W L M =W�.. � Z a ZD W a 3 *� a W � _ ZNV sNEEr m� Site Plan Proj Data REVISION 1 REVISION 4 PI_ANNING REVIEW RE1/ISION 2 RE1/ISION S REVISION 3 RtY1510N 8 JOB NO. SNEE�' NO. APN34222044 Dn7E � � 9/�L/2010 DRAWN BY CN � ap �Aew, de�iqns, artarparrwMS antl plans inEkutad or repreaantal Dy Mu Ororirp on orMO by, aM Nf p�y o/ CHI D. NGUYF,N CnC wen CrautW, enwNW anC dswloped �w uu on, o�d m connxtien v�N, tM speci/fM p.ojecl mna W such idMa. defigns. oRa�gNnMU ar Plont eMll b� ufW by or CiiCloaW tD onY PMw�. flrm o� corporoHOn for arry purposs whot�oavsr riUwut Na .r'rtten Osmwasbn of (,lll 0. NGUYEN .ritbn 6menaion� on tnw. aro+inqa ahax nw• pr�cWMC• ov�r uol�a o�mm4ona: conUactor ahWl vmily, onC be ras0onefDN hpr, oll dimsnvions an0 eontliUona on Ns joE on0 this olfies mu�t b� noti/ieC o/ any variption� frwn tM dimsneiom a1M conCiWns alw+� Dy thasa O'owirqa. ehov Aetais m�sl Oe auDmlKaC to Nis oHice tor opprovd bafom proc.a0lrp wlth lobrication. � / " �% , -, , , _ . , / '= � , ,> : , . ,,;; , ,�-, ,,��, ,.,�, ,.� � � � \% / ` � � \ � ` / � ` , \ , 1st Floor �rea � , ,_ , ,, ,,�, ` � � \ � � � // � '�, , ` G a ra e A re 9 � ,, � �:�_ � --� _ _ __ , � \ , , , � , , � \ � � \ CALCULATION 673 SF KfTCHEN dc FAMILY 216 SF DINING dc FOYER 72� $F MASTER SUITE a+e sF c�w�ce 2223 SF TOTAL -=`_:,:;= -` - . _- , , , , � , , \ � , � \ \ �---------� � � , , I �------------- I � ` �I � � ' I , � � ` r� \GARAGE � \ 493 SF ` ( � iw � \ � 155SF � ' ,- , ;, . . ,,-%= .; �,- � r;"; , !�'� ` w ,�,� � �, ,�:`, i,-,! �: ��.✓ � ri. - � ,,, ,. ;,= ,� �-� �; ' � I � � �ia, — J � / �� -�/ � �_ ��i p�, �af;�l.• . - i4 �-C� ---__�� . EF .. �_'�1�_� �� ';�G U�,•, �� . atl �ASOS. Ossigna. orronqemenls anA Olona inWCateE w repnasnteE �y tho drawinq an ownW by, an0 tM prop�rry o/ CFH D. NGUYEN on0 w�n creatM, smoN�G oM dwelopW /w uae on. aM in cron,wcGon witl�. tha apecifiad prqeet. none of suM itlw�. O�aiqns. orcang�mmU or plon� ahWl W usM by or CiubfeA to a�ry prwn. Rrm or <orporatlon tor rnry pyrpo�e w�ut�oavsr wiNOUt Na written parmiasbn of CM D. NGUYFN �IIYIIM 71N�IMfiO�� 011 I11H� WVMiI19i ihGll hW� Pf�C�0M1C� OvK lGOlb EiTMSiWIi: <ontractp aMM vmlty, ond W mponaibN tor, oN Otmenaions and eonCitlana on Me joe on0 th�s olfic� musl W notifieA oI orry vcnution� trom tM dimanaiona onA contlitbns Nwwn Dy Nna Crowirqs. eho0 CetalN mu�t W au0mittM to Uit oHk� }w aPPrwW b�/oro proeeadirq wIM foMfcatlon. N ORT�y 1/B� � 1'—O' a 0 CHI D. NGUYEN 3465 SUNCREST AVE SAN JOSE. CA 95132 408.839.3968 V W 0 W oC W J � � W � � � Z 3 Z � � a� O O � � � ��o W Q , OVN W �� N V�� Z M W N .. ��'a o �a � W �a N � N V 5tiEET 71TLE F.A.R. Analysis REVISION 1 REVISION 4 VLANNING REVIeN REVISION 2 REV�S�ON 5 REvIS10N 3 REVISION 8 JOB NO. SMEET NO. APN342'12044 D.eTE �� 9/14/2010 DRAWN BY CN a 0 CHI D. NGUYEN 3465 SUNCREST AVE SAN JOSE. CA 95132 408.839.3968 ( � � �, � � • T64 69 `� —�_ �� _-- _ 1- -� � , � .�.,,`— __--- � -, ,� , I �s �- ` �� + _--. °_ � __'.� _ ,y4 — — — � � — � I _��_`- � � � �— ,__ , � r==--==��I�=---_��-- - --� _ I I ��, —_— I � � . � � _ � � � I ,q \ i i \ I GAfL4CE FLOOR � I - ��. �� T � I NEW SLAB PER STRUCTURAL EN � � VS \ ` (INOEPENDENT OF PIERS ) ( 1 � �' � I � ` � �� ° � � i � � 0 �� _ � ' , ,=r � � '� - - _ _ � I �� , �__ .. � - - - - - - - - - - - � -- - _� - a "� �� :,.. —:_- �,;— - , � �,, � �� — ��' � ---- -- ,. � -- ------------- ----- - � . � II . �. \ n n NEW C6) 3'tlia X 30'C��P PIER�S �-- \ � � --�y— ' � ITM RtGID I—BEl.M FRAME '�/' - ' _ � � � ``� ��' � — — � 20' OAK J � 1 ' � ' 2 � ' , � • J�� 69 A. J ,�h � /� �--_'t�� y ,Zb '.v� kET,�e� / .� / �S�d H __ ` V�L // \ ' �; 0 / f � � ds '� —r'�-- ,e` a , ` '_r �,e�'' - o �_ -- w----_ �y`� .,Quc �,?2"�"` N '��,� ---- -- J AI � -`f Y tt � ` _� . ---�-� r.a.NlvG — u� °� _ � �- __ Fo u n d at _ -�a-� — �, .':�" / oll �Ma�. daaiqns. artonqements onA Plans inEleatsA w roprsaeMaO by Nia drvwirp an a�nW Oy. ontl the DropMy of CHI 0. NGU1'D1 aM wM <raotW. MwN�O and dsv�lop�d Iw �aa an. oM in nnactien with. Ns spac'AieC propct- m of �uch �deoa. Cerqns. orrong�m��b or pWn� eYqll De usM by or OhcloaW to any p�roon. firm or eorporation for arry puryoa� whut�oever wiMOUt Ns writtan Os'mis�bn of crx o. ncurEn wAtNn aim�nsions on tnw� urowu+qa al�ou Mv� pr�c�e«�c� w�r �eaNd O�mmsima; controda ahNl vmily, enC be re�ponNble for, oY tlimsmims on0 eanditiona on tlro joE anA thia o/fica muft De netifiaA of ony wriat�on� lrom tM Aimsnaipro end can0ifions �Mwn Dy �MS� CrGrinqa. ehoD d�teds mwt De au0mitt�A to Ny offics tor aOD�d before procaedinq wi� /obricafion. ' -�f :- J � IP�� t��l� ��,• �, \� ' � / ' \ � / % .- i '�� , ,>: ;:'% � � -7�=%�� . �'f� \� � � � \ � � � \ iE \ � ` �, , � '` � Gara e Plan� 9 � \` , , ` � � � � � � _; 4 �,:, � V `V , �� k,l �`�. r . �' NaRrl 1/8' � �._�.. W V W � W o� W � , , W � � Z 3 Z � � Q � OO � � � � � � W Q � OVN W �� o� � L M W N .. � O�a � W �a N� N SMEET nne FIOOr Plans REVISION i REVISION 4 PUNNING REVIEW REVISION 2 REVIS�ON � REVISION 3 REV1510N 8 JOB NO. SMEET NO. APN3422z044 OnTE A3 9/14/2070 DRAWN BY CN a 0 i� CHI D. NGUYEN 3465 SUNCREST AVE SAN JOSE, CA 95132 408.839.3968 EL .322' North Elevation - Front � � � I I 1 _ tt_m•_o• user_o•� ------------- — — aw uecx I I � I � �� 1 I , ��°� � , Q ��, d , � � P / \ � , , � � , � � �------------� L � � I r� � � z - � �I - I1 / i . r� _�/ ta� � a � � 0. �0'-0' (+338'-0•) — — l�! ROOR �.�. 0. -l0'-0' (•548'-0•> _ — _ GARAGE i'F. � � � EL_30'-0' t•526'-6') � STREET LEVEL �outn Cievation - �sacK LEGENDS ❑j OOORS d� wINOOW3 �g RETAININC WA� � c iq 2—PANEL SWING DOOR ❑j NEW COMPOSITE DECK TO COVER EX15T1NC FOUNDATON � 1—PANEL SW�NC DOOR a AIODUTAR CAB�E RAIUNG SYSTEM �r_ PICTURE w1NOOw (flXED) �9 DECK WITN STAMPED CONCRETE COVER � CASEMENT WINDOW �p METAL STAIRS dc RAILiNG 7 E SKYLIGNT 7 � ELEC/WATER/GAS MAIN i F 7 8' M.�.RDWOOD GARAGE OOOR � 2 OUTDOOR SOLAR LED LIGMT i,3 OUTDOOR LED IJCMT O 'C1A55 A' METAL ROOF �y OUTDOOR MOTON—ACTVATEO SECURITY UGHT —STANDING SEAM � 5 PERVIOUS ASPNALT DRIVEWAY a 3 CMIMPNEY WlTFI SPARK ARRESTORS � 5 SEE UNDSCAPE PUN a FIBER CEMENT SIDINC, VERTICAL PANEL �g STONE VENEER (LOWER wqLLS) �o � ,�- �, �� E�� , , � r� a . , � � , e ,seo• � � I ' � �------------� � � ❑3 r � o � � �On. — \ \ � . � � _ _ I �� / /'_ _ _ _ _ _ _ � -10--0-c•%7'-0'> � � _ _ _ ______ �__'—____ __ �� _ 3+tl OECK � O _ _ ❑ I I 1O �Z '2 �� a � � -�— ----- --- ---�'/ L----- �'°'_°'"a's�'°'' _ _ _ J _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ lst ROOR v.f. � r=� � � � West Elevation - Right _ n. -io•-o• <.s+r-a•� � — — — ca�n¢ r.i. � a � •m e� \ � _ _ _ _ �_ _ — _ 1 '_ ',"' " ' '�" .��L��: I ;`k-.� �� I - I �= �= �=� � - -�� -------------- � \ ___�, � I � � � I � . � i . ie._2. I � I � I \\�� \�-------------, - - �� — --' _ EL-543' � � � _ _ _ J East Elevation - Left w� w�a�. AnWn� anarq.nw�b ane pwna inateabd a. nprw.e�tw Ey fhb erv.tnq on wn�A Ey. and tM propwly ol CM D. NGll1'EN aM ��ro enotW. amelv�tl anA A�v�bpW Ix un on, and in emmefion Mifh. !M �p�ei!'nd proj�et nam of aueh IAp�. dnlqn�. artvqMMnb w pbn� fholl D� uu0 Dy w drJOrE to arry p�aon. flm1 af rorpo�vUan fx a1y putpoM whatfwv�r without tlN wAltwl pwmi��lon of �o.� MttM INr11M��iOn� on tlNM AmN�q� lhoM hav� WKWNIG ovK fCaNO A11Nn�iona: eonfroefw Ma4 vwih. mW W r�OmiW� Ior. aq d'wn�mion� aM earWidaa on fhs job and th's oMe� mu�t W notlN�d o/ a�N vaeiatlan� Iram !M tim�miom onA eqqltlom aho�n Cy Uw� Oro�Inp�, shop detaYa mwt W wDmlttN to tN� offlea lor uOM� bNOn W��9 •Nn faDACOtbn. t/e' � t._�.. W � � V a rl � O O Q � � � �� Wa� �VN � W �N � V �, ��_ _ ,i W L � }, W H .. �� a Z� 3 *� a W � � ZNV SMEET TTIE Elevations REVI510N 7 REYISION 4 PLANNING REVIEW REVISION 2 REVISION 3 REV1510N 3 REV1510N e JOB NO. SHEEf NO. APN34222044 °A '� A4 9/t4/2010 DRAWN BY CN PREvIWSLr pPVRpvEU � _ _ _ _ _ � � � � � _ _ _ _ � — _ _ � � I � � � � � 16 ` � \a` �� I a 0 CHI D. NGUYEN 3465 SUNCREST AVE SAN JOSE. CA 95132 408.839.3968 W U W � W OC W J � z W } � c� z 3 Z � � Q � 00 � � � ��' W Q o �VN W „ � 0 � �Lt'7 W H .. � o �a � W �a N� N SMEET TITLE Bidg Sections REVISION 1 REVISION 4 PUNNING REVIEW REVISION 2 REI/ISION 9 REVISION .S REVISION 6 J08 NO. SFiEEf NO. APN34222044 oA� A5 9/ 7 4/20'I O DRAWN 8Y CN dl iAw�. MNqro. arrmqwmnl� ond Vbn kMieabA or npmvrtW by t�4 trarinq an orMe oy. antl a. proprly or p/l o. NGUYEN on0 �n cnot�O, �nvdr�A yW a«dca.d tw u.. on. ana in connsuan ritn. tn. .wcifi.d o�i«L non. m .ucn i0w�. M�i9^�. anaqrn�nU or pqn• tlw� W uwa M ar ahcbwa eo anY P��. fYm x cppaotbn for ory pwpos� wMhownr Mifhout tM �N�n p�rmiaNOn d �o.� witbn ANmnYOns on tMr Ara�inq� ahaM Mv� pnc�Aw�c� ovr xalW ANmn�ion�: conhactor andl wrilp. aW b� ra�porniEN fw, oM Atm�nwn� ond conOitioru on tM joe oM thia o/flw mwt b� notilt�0 0/ ary wriafioro !rom IM dim�nsion� wW tenEltbm alawn ty tMa� AraNnqs. alqp O�tall� muft De aubmithA to NN oMp far opprowl ENon qvcwONq wIN fabrlcotbn. i/e" — i'—o" s•-z• 2' 2'-7' �� -5" . . . l2 2• � mb � � � M. BATH M. SUITE - South S'-9' 1' 1' 3'-9' B'-7' n= � � � ■ � M. SUITE - Norh HALL 3'-8'— ,k--�' �o =� 3�' _ -'F- � 1 M. SU�TE - West 3'-8' 3'-9' '-11' 3'-9' • • � � HALL - East BATH Master Suite & Master Bath 3'-8' '-2' 0' 3 ' - � � �, � 1 � 'I - "I .� r .� �"!r�f.' .. 14' I � I �- �,. I I I I' 10'-6 � ��. •� :� � � i � i � i i . . � I � �: � , �, .� ■ �. �� ■ � � KITCHEN - South DINING Family, Kitchen & Dining � 3'-2' �r i � ,�r� .�,,:. • �a- � ======= . ; STAIR HALL - West 3'-7' 3'-8' lOU 110N Gl1RAGE GARAGE DATI LS/iO1lCT LAIMIDRY M. SUtTE FOYER DINING TO DECK FAMLYTO DECK KITCHEWM BATH AA. SUfTE HALL KITCHEN DINING, KRCHEN�NK _ BATNl, M. BATH TOILET fD (D�door, W=wir�owJ D1 02 D3 D4 DS D6 D7 � D9 Wfl �1I1 1A�1 1K2 � QUAMI7Y W�7H HflGM 1 16 T 1 3' 8' ] 2'6 B' 2 3' 8' 1 3' 8' 1 6' 9' : 6' 8' 2 6' 9' + 3' 2 3' 8' 3 2'6 7 2 2'6 T 2 2'6 T 2 3' 4'6 3 3' 3' ___ ._ _ _ LOCATWN ADOR __....___ _.___ GI1EtAGE CONCRETE LAUNDRY / WH TILE . _......._ "__._. . ... . .___ .. .. . STAIR 2 CARPET S7AIR 1(entry) METAL _________ .. _ . -_ ......___. FOYER STONE, GLASSTIIE _ _.,.. -._.,_ M SUITE CARPET . nti sani sroiVe, cussn� ____ .__._ _.____ . .____ ___ _ _ POLVDER STONE, GLPSSTILE _ _--- _ _ _ _ _ ---- - HALL WOOD ... .__.. ._.... . OINING WOOD _... . __ .. _. . . . .. . . KITCHEN WOOD KITCHEN (countertops) STONE GLASSTILE -- ---- _. FAMILY WOOD DECK STAMPED CONCREfE •s• All RAILINGS MODUTAR CABLE SYSTEM DOOR & W/NDOW SCHEDULE iNKNFSt TYPE RAFG GARAGE. SEC110NAL 1.5' IHTERqR, SOUD 1.5' INRRqR,50LID 1.5" INTLRIOR, SOUD 1.5" INTERIOR. SOLID 2' QR., FRENCN, �OUBIE 2' OfT., RiENCH, DOUBLE 2' OR., FRENCH, �OUBLE WlTRANSOM 2' EXT., FREIKH Z' USEMEKf � 1' /1FF 2" GSEMEHT � 1' AFF 2' CASEMENT � 1' AFF 2" CASEMENT �D B'6 AFF 2' GSEMENT � 5' AFF NAIVO MATERIA! PAINT ROLL•UI' W00� CLFAR STACV RH WOOD PT� RII WOQD PTD RI1 WOOD RTO RH WOOD PTD RH ALUMINUM B►om6e�'s French Blue RH ALUMINUM Bioml�erg'a French Blue RH ALUMINUM Biomberg's French 81ue RH AIUMINUM Btonterg's Fench Btue RH AWMINUM Blortiherg's kench Blue RH ALUMINUM Blortibc�'s Fronch Bluc RN ALUMINUM Blortbcrg's Frcnch Bluc RH AIUMINUM Blwrik�erR's freneh Blue RH ALUMINUM Blort+bcrg's ke�xfi Biue FiPAM£ MATEAIAL RATING G1ALIVG 7YPE W00� — N/A WO00 20 MIN. N(A YVOOO --- N/A YVOOD — N(A WOOD -- WA ALUMMVIAN •- TEN�ERm. LOW E. DUAL PANE ALUMINUM -- TEMPERED, LOW E DUAL PANE ALUMH�IWN -- TEMPERm, LOW E. DUAI PANE ALUMINUM -- TEMPERm. LOW E. DUAL PANE N.UMMIUM -- TEMPERED. LOW E. DWIL Pl1NE ALUMWUM TEMPERED. LOW E, pUAL PANE ALUMWtHM TEt�ERED, LOW E, DUAL PAI� ALUMININM — TEAM'ERED, LOW E, �UAI PANE ALUMINUM -- TEhM�ERED. LO W E, DUAL PANE F/NISH SCHEDULE _ . _. _ ..- ---._ __. _._ - _ _ ____ _ FLR F/NISH/TYPE BASE Wa1l WALL FlNfSH CEYJNG CERJN6 RNISH CLG NEfGHT . _._. _ _ ___. _ __._...--- _ __ - - SI�IOOTH TROWEL -- 5/8"GYP EGGSHELI IATEX, LOW VOC 5/B" GYP EGGSFIELL IATEX, LOW VOC 9' (flat) 1'Xl' SLATE 1/4 C CHANNEL: S/8" GYP K,GSHELL LATEX, W W VOC 5/B" Gl'P E6(�HEI.� IATEX, lGW VUC 9' (flat) . _ .. __ .. _ .. _. _ ...___._ . . ... . _. _.. __. BERBER 1/4" C CHAMNEL 5/S" GYP EGGSHELL LATEX, lOW VOC 5/8" GYP EGGSHELL LATEX, lOW VOC 9' (Hat) _ __ __. f'RENCH BLUE N/A N�A fItENCH BWE WA N/A (open) ---_ __. -- _ _ --- -- _ _ . _ _ .- --- --- -- _. _ _- -- _ _ -- .- -- —_ __. . .___ ----- NATURAL 1/4" C CHANNEL 5/8" GYP EGGSHELL LATEJC. LOW VOC 5/8" GYP EG(�HELL LATEX. LOW VOC 32'•1^2 _ _ . . . _ . _ . _ _ _. _ _. .. BERBER 1/4" C CHANNEL 5/R" GYP EGGSHELL IATEX, LOW VOG 5/8" GYP EGGSHELL LATEX, LOW VOG 9- 12'2 -. -- - __ -- -- . _ __ NATURAL 1/4" C CHANNEL 5/S° GYP EGGSHELL LATEX. LOW VOC 5/8" GMP EGGSHELL LATEX. LQW VOC 9' (slope) _ _ -._. . _ _. ___ _ NkTURAI 1/4" C CHANNEL 5/8" GYP EGGSHELL IATEX, LOW VOC 5f8' GYP'X' EGRHELL LATEX, LOW VOC 9' (slope) __._ __._. _---�,__,.__ _,---_.� _._ _---- -- -- 3/4" TtfG BAMBOO 1/4" C CHANNEL 5/R' GYP EGGSHELL LATEX, LOW VOC S/A" GYP EGC�HELL IATEX, LOW VaC 9' (slupr) ._ __ _._... ___.. .. . _.__.._._ . .. ..__ . . _ .__.. __.. . _.— _ .. ._. _.. . _ ...... _ . .. .. _._. .... _...._ .. .. .__ 3/4" T&G BAMBOO 1/4" C CHANNEL 5/8" GYP 6GGSHELL LATEX, LOW VOC 5/H" GYP EGGSFIELL LATEX, lOW VOC 9' (slope) ..._ ___. . .... .. .......... ....... . . . ......... ..... ...... .. ...... . . . . ." _.. .. .... ._....... ._..._... _..__... . . 3/4" T&G BAMBOO 1/4" C CHANNEL 5/8" GYP EGGSHELL LATEX, LOW VOC S/B" GYP EGGSHELL LATEX, lAW VOC 14'-1T2 NATURAL -- STONE, G1A55 TILE NATURAL --- •- — _ _ _ _ _ _ __ - . _ -- _ 3/4" T&G BAMB00 1/4" C CHANNEI SJS" GYP EGGSHELL LATEX, LOW VOC S/8" GYP EGGSHELL LATEX, LOW VOC 14'-ST2 _. _ _._ _ __ NATURAL — PLASTER PL45TER -- PlASTER — FRENCH BLUE — — — — — _ all id�a�. EN19^�. ananpvn�nt� and Wan� indkaNd x r�pr�wnNA Dr thh droNnq ar. o.�.a nr. a,a u�. wowKr a cw o. ncurvr ana ..r. �..�w. .moi.w aw dMOp�d /w w� an. anA in connMien with. lM ep�ciR�A prq�et. nom of wch Ww�. Awq��. artaqwn�nh w pan. �MM W u�W by or 01�tlwW W c^Y CM�. fNm or rnrporatlm far ory Wrpoa� whotw�vr ritlwu! tM �rMtan WrmlWOn M ��o.� Mp�n dm�n/Wns an fMw ararinq� �haM naw O��u owr xal�0 dm�n�bns: cmtrontar �haC wri/y. ond 6� mpomibl� fw. aN drmrnian� and conditian� on tM jab and Mi� offia mu�t M mfi/l�d of ary vorialie�u fram tlw dm�nsien� and eonatlon� afqwn Dr Mp� Cro.inq�. ahop A�twlf mu�t W wOmlttM W tNS of/lp Ipr approval bNon proewOlnq wlth fobACOtlon. , , , ' a 0 CHI D. NGUYEN 3465 SUNCREST AVE SAN JOSE. CA 95132 408.839.3968 W V W 0 � W � W J � W � � t7 Z 3 Z � a 0 o� � W � W V 1.` W � 0 � � N N � �rl � � a� Q V . O � H H � W a � V � 0 i N � � M Z Q SMEET TITIE Interiors REVISION 1 REVISION 4 PUNNING REVIEW RENISION 2 REVISION 3 REVISION 3 REVISION 6 JOB NO. SHEET NO. APN34222044 o�,� q6 9/14/2070 ORAWN BY CN HALL FAMILY - North FAMILY KITCHEN - East �z � 3 NTS � �t SUBFlDOR r ROOR d0151S , sr�waNC s� �tx aoac, mrN ce-�ao 0/ BIDC PAPEN 5" HAlF ROUND RNN CUf1ER BY IX15TOMBIUIETALS ROOF PANEI. 2X I17-W PU1E CQtTNNI�D FIBER CEYfNf FASCIA CER�NNf� F�R CE1/Et�f SIpNG SOfF1T WNL PMIFl CERpNf� FI�R CEMENf SIOINC. VERTICAL Pk�E1 ' OPoP GP � � 6tPSIN 80AR0 - �tx� �r. �r+ �.rt wmi ecr. � F - 'c' G+�wr+a �s wmaoa a�. rrr� - DRP GP COIOR CONI�kIE 0/ 'MEIDED WRE MESN AOPE .ZS':1' 3.5' l' TR4 IS' YEGL OEp( ___ __---__�J � � I 3 � 3 � I FIREP ACE FRAMING DIMEN ION � �SEE 1HRWGFi CIS FlREPIACE BY IIONII(',0� NODEl lSTOF-ST � i 2' I � N.K7� IHIQtIOR FlN6H fL00R NfIH IXTQtpR FA16FI ROOR\ _ CALOR CONCREIE 0/ WELDm MIRE MESFI � `-- SUBFt00R o� Fl_OOR JOISTS � s�oa� .zs':�' _..e �e: • �. � • a • 3.5' t' TR91 1.5' YET1L DEq( rJ' AFF �ec a Ba�D�.a C'�3 k`.�.a�4sd SMFiM � b 2&gaig� ��do� a3".s�cMionalmd�' �.f"s:d.G Nur� tn.Q�2 ICKn� TOP RAM. i ',, N6W{'�!lQCQ�Ot► � I T�F"aoI@so{�PF�e�d�g. �T u�� . � �� i ' �. � � � cu�.ic a� ao+�w�na�s i , �r� �Cf �� s�eYrn �� i �e_r� � ,_ � . � I t a�,ae� F ,y�Cs�aM�or�+gwndYgau.s MODUTAN GBIE AAIIlC SYS1O/ I' 3 t � �wtdi�aqYb'�icalrnoeealai�d`e� I ! AEC4iMM�'� � � - _ � - . � � �IfiedoQ A6e pr�ii+rNas � - � . edoQ � ;j ; COIOR CONCREtE 0/ WEIDED WHtE 1/ESN �� liiOQ.tfie! 3s' EDGE TRIY �' SeJ11wNQ ! ' Metal Roof AOPE —a I I � �� NOT TO SCAIE d � � • � FR191 WIERIOR fL00R (�t'aD: na 1/o7cP) a • ,• a. e �) �5 ) 1.5" MEfAL DEq( � �� ROOIt JpSTS �� ` C' ) "' � ' �� 1'1' � � � . a . . _... ,. T_�T..-�- .— - .: _ ... : . . ' Fw�+ c�c '^".�L� � l�-' i� f. YET/L FlASFINC ! � �' � 5/8-'� CYP BU *I .. U � OVfIONM: o/ RC-t CWWNQ r � j-� '�� ._ I ` �. � STONE VENEER 0/ ' � .. GORTNt 8ED 0/ BIDC PAPER I: � 1•11• � � I,� i � ia !; ` - __ � 4fUW ,6W8 TOP OF GAW1(',E OOOR (� � \~ �� . SIP Wall / Roof Plumb Cut Ea i i /2••� i • (If�1D: na: 1/8%P) - See Yfirough Fireplace Framing _� :' , , iz••_, • ; ,�, (M'�1o: �a: t/ezP) ; ��`: L • ♦ ♦ �II �� ' � � '�''�� ' t '' �� i �� . •♦♦♦ ` h1' 771 .:�7' �7 !7 `1 7' ' 7 .❖.❖.'; � �•!. ��i�i�i�il �i`. •�...♦�,.♦, i •�i ii � ��1. �.� � : � : .,. .�� i�� •' 116NER ` SU6f1.0�R �� Fl.00R JO6lS �� 3'- WA�KWAY oFer �w COIOR CONf�tEIE 0/ WFIDED W�tE MESH � 6- �g f � d SI�E .25':�' V � . ♦ . . • _ . , . . � � 4 � . � a . _ - � -' - �� ' i s' u�ru o�ac 3.5' 1' TRW �% d a a SIP Parapet WaII �--�. --��- � i i /2°� i • . (ACAP. no: t/ex� m.,... _y...__. Concrete Deck & Cable Railing � � � ��- , ,�z••-i• I ! (ACAD: no: 1/EXP) � 3 "�- � �' N Bl T omberg Windows & Doors ��- (ACM. nq 1 /B%P) � g iaa+t e �om v�s � r4art m wrR No a a � �4� �Mrs) d B' UMIB e ��YOPE d a TIP OF DRIYEII�Y 4 � 0 � � � IIOCHf R 'NOM YAAE$ r wz. Hoa,r ° a �� _ ��— � � � � �� I� I ��—III, I -111! I -11�II � d ---�I� � � w , -� � ��: 1. ON(L Fq(E �.�.�� L FLL HOIE NIIH CNdR. 11EN MSERf SOl NN. IE��E 501. Nk FIEID'S PROIRIAMG i s�r isr onv a r�oacm aa� 4. 067ILL �/YSC PUIE 3 lDUlIIG Mlf pi SOL 1UL IiFAO 5. SPR�Y 210 WAT OF � 910R8E1E F�6f�IC: PAnFA1m-4NPFD 1AlURAL SIOIE � � 1' PONOUS ASPIYY.T � 1' .75' C0.V9ED STONE — a' is' sm� — fUER FI�dC IIED 7FE SUBCRIOE BED — u1WYPICIm SIIBpUOE ` (E) CMI MMIl ;T� � I Porous Asphalt Driveway & Driway's Wall � i i/2°��' (hGO: no: �/exa) a � CHI D. NGUYEN 3465 SUNCREST AVE SAN JOSE, CA 95132 408.839.3968 W � � � V a rl , �WOO ��LA� Y/ � � � W W Q o ocOVN �W .� i N �V_�, � M �. W N .. � � � a ZO 3 *� a W � _ ZNV SHEET TITLE Detai Is REVISION 1 REVISION 4 PI_ANNING REVIEW REVISION 2 REVISION S REVISION 3 REV1510N B JOB NO. SMEET NO. APN34222044 °�'� A7 s�,��zo,o DRAWN BY CN LEGENDS ,$ SWRCN ��1 OFl OUTIET (MAND-FREE FAUCET. ELECTRIC BIOET, dc OUTDOOR) � RECESSED DOWNUGHT PAR30 � FE1T PERFORMANCE I.ED 18W�73W $ TRACK LIGNT MR16 � FER PERFORMANCE lE0 4W�3�N� A� OUTOOOR DOWNLIGMT, DARK SKY � MX 3w LED S� OUTDOOR MOVEMENT-ACTIVATEO SECURRY UGHT � BRONZE 100W NALOGEN OUTDOOR SOL4R UGNT � PRESTGE 3W �ED Led � aM �dw�. dsspna. orrvnqams1rts ond phns inaleWeE ar repnaentaA q thia drarirq an a�nw q. one tM propary ol CMI D. NCUrEN oM ww� cnatW. wrvolv�a ane dewluWd �w use on. arM im m�Metian rith. ihs fPKifiad P�ixt. o( w h id�0l. C�p911! Offd1QMIM�f Of Pb/1{ 1110N b1 Ufb br W difCIMW f0 Of1Y pMfM. firm or corporatian tor pry purposs what�oeyx .iMOUt tl�a written O�sfion W CM D. NGUYfJ/ wriet.n aim.nsion• on tn... arvwinq� aha� naw w.e.a.ne. a�r acaw awn.n+ioro: eonlroctor aheN vsriy, md ba mO�sfDN for, ell Ofmsnaiom oM eontlitlana on Ue joe enA eni. o/rica muA � noti/iad o/ any wnaean. rrom tM eimaneions anA CMCitiOM aMwn Cy tINN Araoilpa. ahoD �tailb muft W aubrtut(�A t0 Mif �Ce fw aOW� Defon proceWinq �Mth /ab7cation. � -, � i�, / �_'� � - _' ,�'";�° � �/; , i _ � ' ��i / ,s r i \' � ( DECK 2 (�) `-' i �; -s;,a i .,. � •` f: J�1t v= ( � (� I _L. 557' � � � . }�-� i ± t �� a ` I�r KITCHEN '� . � y ` � � 0 �,I �' i + �i`� �. * � a • � �, I ♦ �- — — = J. �i II • ;� � �,� 9�.� ` _ ;iraiNC � . + � + . � ��' � � � ' �� ---- J �� \ ' — \ "�I a . • � � � • • } • � 4 FAMIIY � - . . .. �,4. SUITE \ 6 � r � * ' * � 7 • � � ` nultr:ldes � .. � ilr?O�uce _. � .._. ....... GECK i �W ai EL. 55�'6 � ♦ • ♦ � � F � J @ i ` A f ST�IR t \ ' �// ' '�� , , ist Floor `'� ,-,� - ; ,�r <, � � � � ' -- � - ,_ __ - - - - - - - � � � ` r - - , - I �------------ I - � ` �I � � . + } � � 0 � + + _ ` GARAGE g � i � I .� , � � � a� _ . - � �°— — :� � I � � � Z� � � � I ,-. aarH i - � � � _ � � :F i \ —' s �! / \\ `� \ \` \ \ `�, �, w � ��_s ` �� _` Ga ra e , ��___ � � \ \ � \ � \ \ � \ � \ \ \ �:, . ...a.,.,, .,:, _�_ << - _.�,. "=..i7-,� _ - � ,. "'_---�-' , � � , � � \ \ , "�' RF� ' A f�ii:m. , ' _ _�" �tc �r" iiG�� 04v w \`� � / �" I N �RT�y t/8' - i'-O' a � CHI D. NGUYEN 3465 SUNCREST AVE SAN JOSE, CA 95132 408.839.3968 W � � V a r�l ZOO 0 0� �n � � � � � W W Q O ��VN �W .� , N �V�� W � L M �„ W �y .. Z �� a ZD W a � W � _ ZNV �� SMEET TITLE Electrical Lighting REVISION t REVISION 4 PLANNING REVIEW aEVISION 2 REVISION � REVISION ] REVISION 8 JOB NO. SHEET NO. APN34222044 DATE � � 9/14/2010 DR.4WN BY CN PLANr LEC�END Alias Scientific Name r�s GO Gercis occidentalis (Standards) QA Quercus agrifolia 55 5equoia sempervirens Sf AuJ Arctostaphyllos uva ursi "Point Reyes' GDS Geanothus 'Dark 5tar' GYP Geanothus g. horizontalis �Yankee Point GL Gistus ladanifer GS Gistus salvifolius GLF Gotoneaster Lowtast' L Lavandula angustifolia NO Nerium oleander Pr Pittosporum tennuifolium RSC� Ribes sanguineum glutinosum R Ribes viburnifolium RO Rosmarinus officinalis T'rostrata' VIt�S F Ficus pumila P Parthenocissus tricuspidata Gorcmon Name Planting Size Quantity GA Native Water Usage Single rrunk Western Redbud 24"-�ox Gal i fornia Live Oak 2�}"-�ox Goast Redwood 24"'-�ox Point Reyes Manzanita Dark 5tar Galitornia Lilac Yankee Point Gea�othus Grimson Spot Rockrose Sageleat Rockrose Gotoneaster English Lavender Oleander �lack 5tem Pittosporum Pink Flowering Gurrant Evergreen Gurrant Prostrate Rosemary 5-{� a I 5-C�a I 5-C� a I 5--6 a I 5-6 a I 5-C� a I 5-6 a I 5-(� a I 15-C� a I 5-{� a I I�a I 5-6a1 Greeping Fig �oston ivy 5-(� a I 5-{�a I 5 6 2 il 4 IZ 20 10 17 6 5 6 2 10 21 9 9 YES YES YES YES YES YES YES YES YEs NO NO NO YES YES NO � i DESIGN INTENT Plants have been selected based on the criteria of fire safety, drought tolerance and erosion control. The plants aze recommended in the'Living with Fire in Santa Clara County' manual, page 17. Others are from the fire safety chapter of'�rees and Shrubs for Dry California Landscapes' by Bob Perry. LOvV LOW LOvV L_OVd LOVv LPN LPN LPN LO`N LOVN LON/ LO�N LOYJ �Ow LO�N LOW LOW Thirteen new 24" box trees including native Coast Live Oak, Western Redbud and Coast Redwood have been added to replace the seven trees that were removed. The wide spacing of the trees minimi�es the spread of a wildfire. The spread of the understory plants is also based on the fire safety guidelines prepazed by the Santa Claza County Fire Department for the Wildland Urban Interface. All plants selected aze drought tolerant and will require minimal water after estabZfshments; usually two growing seasons. An automatic drip irrigation system will be installed to water all new planting. See Irrigation Plan sheet L-2. No trenching shall occur within the Tree Protection Zone of existing trees. Several of the trees and lower growing ground covers aze useful in controling erosion. All new and existing retaining walls have been screened with shrubs and vines. Where possible plants are located on the high side to drape over the walls (Rosemary). Vines aze placed on the low side of the wall that will cling to and spread over the walls (Creeping fig and Boston ivy). Trees and shrubs have also been placed between the vines to soften the visual impact of the wa11s (Coast Live Oak, Oleander, Rockrose, Rosemary). No turf grass shall be used for the project. CONSTRUCTION NOTES: 1. All slopes shall be netted with American Green netting, or equal. Do not use jute netting. The netting sha11 be installed as per manufacturer's specifications. The netting shall be cut to allow for installation of plants shown on the planting plan. 2. No trenching shall occur neaz the existing trees within 7 times the diameter of the trunk of the adjacent tree. See irrigation notes on sheet L- 2. 3. A new retaining wall has been added below the existing driveway wall closest to Mercedes Road. This 3' high wall, along with the planting, will help to reduce the height of the driveway wall. 4.A11 new and existing retaining walls shall be faced with a stone veneer. The real or cultured stone will be selected by the owner. Plants have been located above to drape over the walls. Where possible plants have been located along the base of the walls to minimi�e the height. 5. Two parallel pazking spaces (each approximately 10' x 22') aze shown on the flat area across Mercedes Road from the property. No significant grading or tree removal should be required to provide the requested guest pazking area. Owner shall receive permission in writing from adjacent property owner to perform improvemeats for required parking. 6. All azeas shall be covered with a 3" layer of wood chip mulch. A product suitable for use on slopes shall be submitted by the landscape contractor and approved by the landscape azchitect. 7. The project geotechnical engineer shall be consulted prior to the installation of landscaping materials and irrigation hardwaze on slopes greater than 30%, or in any areas where slope stability may be compromised 8. The landscape and irrigation contractors shall review and comply with all recommendations made by the city arborist including the Design Guidelines Recommendations 5.1 numbers 1- 12. 9. Water source will be San Jose Municipal Water. The Point of Connection will be taken from the new water service line for the residence at the northeast corner of the house. 10. I have complied with the criteria of the Water Conservation in Landscaping Ordinance and applied them accordingly for the efficient use of water in the irrigation design plan. \ : �OQ0�0 o �-- � � 0 101. ac�� % // �/ ll MERCEDES RD. \\ /� � � �( \ ,/ \\ � /� \\ exisri rR� ro R�AiN �rYP) II 11 g� II � . __� 1� "'� � � �� // / \�\\ � °.�� /� \\ �0 7 a �� l ` '� //d°• °� \\\ F / p � � p � / Cyp � �Cyp I 48'OAK ,� ✓ _ \ 11 � I' N 6 1 ° 1�i' �p E � Z.�� APPROXIMATE LOGATION OF EX. OAKS 6ASF� ON AR�ORIST'S Pf10T05 NEW A5Ph1ALr PARKINC� GOO SG�. PT. \— o��nr� r�s�ac� �� s�r�sue�v �er �s �` � GMlGQY IS APPROXIMATE N.1. IXISTIN6 TRF�S TO � 6" AsFI ctdZ� �+iN snal te �crID a.Ri� r,ornrwacr�r, / — � � - � ,4s �z �isrs r�ca�wnnoris � o ��-�_ ---- o � � - APN : — o — — �.� � °,�� _� � I' 9 I / \ � � � ;'/ �_�� ;� SEE SHEET L- 3 FOR PLANTING DETAII.,S AND NOTES � \ �� ,, // // � � � �1 /� /� — NEW 24'" �OX rREE (TYP ) 342-22-044 � °° � a ca e � � �� N 0 1 � � U �" U � 0� � � � � ° o � � o U� � .� o �� W V � W � H � � W � r � � � A � 0 � � W A W U � W � � � � N N � `"� 0 � H M � U � O C� � h�'1 W a � U � SGqF� � MIGHAH. A �, �� rn J - �1 e Na �s�� o l�xP �/�I/YL) � � � Gp �A.1fV� � )ATE PURPOSE B� I.Z0.10 fitssti�ssuuereview MA e 1.21.10 nvico► MA nvt� ► 130,10 co�nfs MA scale: 1/8"=1'-0" sheet title: planting sheet number: L-1 of three IRRIC�ATION �EC�END DETAIL KEY MANLFAGTURER — � s� n 4o w� — G I a s s 315 PVG — Sch GO PVG A AO RAIN 61RD — � t1l,NfER � � tiunter _ n ��P�� G � Senninger G � Amiad D 3/4'" Polyethylene D /� Ewing p opt i ona I MAXI �.ET — � E4VINC� E optional TORO/GObRA F optional Rain �ird — optional Rain pird �`�i�d !� DEr-aGRIPTION NSF Approved I��Irrigation Mainline NSF Approved 3/4" Irrigotion Lateral as needed N�F Approved 3" IRRI6ATION SL�EVE LNDFR PAVINC� ESP-GLX 3 G STATION GONTRq1_ER WITH INDOGR WALL MOLNT GA�INET MINI-G�K MINI-(,1_1C Ra i n Sensor ASV 101 - S - DG I�� ANTI�IPfiGN F1.FGTRIG VALVE WITIi I�OW GONTRGL b 401 W/ hand I e 3/4" hose b i b PR - 20 - L 3�4" drip pressure regulator set at 20 p.si 33-0 3�4" drip filter,200 mesh, self-flushing Rainbird 3/4" drip tubing. �zessuFZe ccn��vsnnr� �/2 c�rt (R�n), i�rt (e�acr�). 2 c�n (c��) iso--rw �n� Iz'" b�rz� sra� �2° bn� sra� w/ SPRAY GAP N077� P PG�Y E� GAP R6NOVADLE DRIP END GAP ASSEMbLY SP-2-ISO-PG2 PRE�E (.GNiPENSArINC� STREAM pUppLER NOZa.E GN �2 GObRA f�EX 1105E XpD - SI X e r i-� i r d E i g h t Ou t I e t mu I t i em i t t e r (I C�PI X� or X�r Xeri-�ug Six Outlet multi emitter (pARbED OR 7�HREf1DED) IRRIC�ATION �r9TEs I. Gontractor shall notify USA ( Underground 5ervice Alert) at 800 641 7�A4 prior to start of any ezcavation or trenching No trenching shall be done within 1 times the diameter of the nearest existing oak trunk. For ezample:lf the ezisting Oak trunk is 2' in diameter stay Ik� away tran all sides of the trunk with any trenching. Z Gontractor shall review all plans and documents pertaining to the project prior to the start of work to coordinate work with other trades. 3 Gontractor shall install irrigation system inaccordance with all local codes and ordinances. 4 Drip system has been designed to operate at a mazimum of a gallons per minute at ZO p s i Irrigation contractor shall verify a static pressure ot at least 55 p.si at the point ot connectio�n prior to the installation of the irrigation system 5hould the p.s.i or the g.pm be insutticient to operate either system, contractor shall notify landscape architect and request review of design �i Pninf nf rnnnor�inn chnll hn fnbon frnm 1tio no�� 4e I' ,.i� �I.� ;.1� „< <�,,, „i.,.l _i,. -- -- . . __ . ..._ _..".y ..... ....... ... ..,., y�. �" ,.,. ,,...,.,. ,.,, r ,..,,,,. The contractor shall tee oft service line and install the mainline and valves as noted on plan Water fran 5on Jose Water 6 Gontroller shall be mounted on the interior garage wall at the power source. Programming of the controller shall be the responsibility ot the contractor for a period of thirty days atter acceptance ot work AIl electrical connections tor the controller shall be installed by a licensed electrical contractor AIl work shall comply with the most current standards and codes at the time ot installotion. l lrrigation design is diagramrwtic. Mainline, valves, laterals and other irrigation equipment may be shown outside of planting beds for graphic clarity AIl irrigation equipment shall be located in adjacent planting beds. S.Irrigation pipe depths: Mainlines under poving shall have 1h" cover over pipes Lateral lines under paving shall have I8 cover over pipes Sleeves shall be located as per plan. Mainlines in planting beds shali have I2" of cover over pipes Laterals in planting beds shall have IZ� cover over pipes. 9. Lateral I ines (non pressure I ines) sizing guidel ines shai I be as tol lows: 3�q" OD. – D to �0 6PM; I� OD. – �� to �i 6P41; I I/4� OD – Ib to 15 (�pM; � �/2" OD. 16 to 30 G�M; 2"' OD 3� to 55 (�PM. Reter to Irrigation Legend and plan sheets tor further data. 10. Gontrol wires shall be �4 gauge �F direct burial wire Use red tor control wire and white tor corm�on wire Gontractor shall run one spare comnon and one spare control wire to each ot the end valves Ail low voltage wire connections shall be made only at remote control bozes. AIl connections shall be made with a 2' coil of wire tor service Gonnections shall be made with Rainbird 'Snap–Tite' connectors or equal. II Drip tubing shall be staked at 6' intervals and have a minimum of one removable end cap assembly per station. I2. Emitters can be placed near the existing trees to water them during the dry sumner months. Once the trees have recovered from the construction the emitters should be removed and the drip tubing securely plugged. EM I TTER SGIIEDULE Manufacturer Model # 6allans per fiour ��tters per container size A5 hY�oz�vE/srArioN # �� -� R� One 11a1f � emitter per each gallon plant EWINC� ISO�l1JW p�,4�,�( On e � em i t t e r p e r e a c h g a I I o n p I a n t � 6ALLONS PEIZ M I NIJrE �� '�� C�REEN Two � emitter per each 5 gol lon plant 1 3 .2 �� `�-�'� C�RF�N Two 3 emitters per each �5 gol lon plant Up`�--VE SI� EWINC� ISO-FLOW (�� Two G emitters per each �4" box NOTE: NO GRADING IS REQUIRED TO INSTALL Tf� IltRIGATION SYSTEM. TRENCHES FOR BIJRIED MAINLINE AND LATERAL PIPES WII.,L BE FILLED AND COMPACTED AFTER INSTALLATION OF PIPE. ALL DRIP TUBING IS LAID ON TI� SURFACE. NO SIGNIFICANT DISTURBANCE OF TF� SOIL IS REQUIRED TO INSTALL TI� IRRIGATION SYSTEM. I have complied with the criteria of the Water Conservation in Landscaping Ordinance and applied them accordingly for the efficient use of water in the irrigation design plan. \ , 13 N 61°1 0'00" E 101, �p��O � � � , _ 6" AK / .,� � ; — I�17_B , � `� �\ m ro'�ae I . _ .�. � -� � � � - � . � ` / � \S '� � PVC SLEEVE UNDEK PAVAiG f - � �� — — — — \ �` -�—�-- — �—�i N 55° 00' 00" E 101, 22' — �� '� REMOVABLE END CAP ASSEMBLY (TYP.) \ � -_ MERCEDES RD. � . \ . . . b / / . - . \ � � � // � � � \\ � � � 3 �20� � � � � __� " � h-, � \ � � . 1� AK 1 � � � � � � � �/ , I \ / � \� � ;. � �\\ �. I __ _. . _ � � � . -- ._ �.�=_. 1_ � . / �. _ � / o l o' QA.K �, i� � / � / . 1 ��.. ` ' � � �`.` � � . � \ � � � _l..,__- �� \ � % -� � � /� Q 14 '�7AK � � _ I— � / r L SEE SHEET L- 3 FOR IRRIGATION DETAILS = � , i�V�'T�R USAGE CALCULATIONS �'' �� -- p O `I � ; � �' � � O � O/�� ' � . �- � y % , �_� \-�// O \ � � \ � / . _ � `� v \ ' z \ � , —� 1 � � ; _. � �- � � _-_.. ` ss �'_ �. �_ _ �� `=��1 � ' � / � � ��_ � � � � � / � // � � = \ ii �� i � � // � � /� � �� 1 � � �� g� �� ,_ ___\ �� _ �=�� ii�� I _ \ � 0 1 � � , // \\ — -- �� . '7 �� - � ��'�[I m;� Q� ;� � _ �. �� //d o" o � I �� ` � � � � \\, �___� / _� - � s o� f I I� � � ^ I� 1 i�/_� 1� I r �� i (. 1 48' �AK V I // �� / � . _ � � / °° � a C� � v, � � � � 0 1 � � U � c'+ U � �� ,..., � a � y h U � � � Fa � WA� � 1 � H � � O W�� Q�w � �T� � W � � �"I � WU U� � � O �T� I'9 W � � � .J r ' � w � � � �a � N � ZNU Q\.P 5GA/� �, � A �. �� a rn J -�1 o No. 's347 0 �xp ,i�m� 3�. �P �� ,,� �TE PURPOSE B' ;�.1� � 1SSUC ICYICW 11�! scale: --_ - 1/8►� =1 � _ �� sheet tide: APN: 342-22-044 � Michael Arnone I,and�a�e Architect - 2010 T1fF![ORMMq1NEMfiM/�BfISGF WI�FORA01611El�10lEWEtYTFE OIMBI tH! BAfI[ OOI1Idi7 OF TlIH[ OIIAYI�10o M CO/M1110N� �MOI�AIOI01! uwx�.ve �ecc wioerxe Mu�+er aer�w �u wwo,�w rma w wwr ww !E P9ROOUC� NI ANY FAM�ON OIl1�IIM YNIIWf TI! D?NE7� YYItlTTEN APRIOVAL OF TNBIAIODCaP! ANCIfIECT. TIC AWAt HECiRONIC 1RM6�1 WTAlWL BL T!C WB[! WlPOlqllLlfl' Wff110Uf W1WfY TO M W10�CM! /1XL7�IfCf. �� ,.�.�,r,o �,. � � � �,.� � �.�..� �ro��.�.��,,,��«..�.�n � �. ►, � � �. � �. �„� , �. �. �, � �, �..,, r � „� �w�c. a wo.na.r�n ure.a,r�a�e,. �s.�. a� wp.e�ry ca.�e�a. irrigation sheet number: L-2 of three ry �r L I� %� �OVER �T (TYPIGAL.) � 36� GP SPAGINC� OF PLANTER NOTE: RF�ER TO PLANrIN6 LEC�END FOR SPAGIN6 DISTANGES Raws �ze Ar 86% c� s�ciFi� spa,cirx� C�fZOUND GOVER SPAGINC� DETAIL sca�: rror ro s�,� r rA�r s�h� I gallon � tablet 5 gallon 2 tablets �5 gallon 5 tablets �4" box S tablets � o � r � "� �� W � o u w w � � ' � � �.�� FowN s� wim � ° 3" GONrINLI'.lY RIM � w �� 3„ I�,LLIi 1" qA X �0-�1 RAN) iRF.AT� IlPGE PA.E PEE S�N�E — u' �5 caa� — RI.D[Ht TRg TE- 1 F�1t 1Rg f�� NOfLS i. a.�ce sr�s �ewe ro v�xcra� cr �eev�tr+s rrta 1 Rp.1pbE Sf/KB MfHf 1W0 Y2Nf5. � n,wrw vir swu x z�- �aa A».eree .vo i in rr.es r�m cr Raor wu �. sPrces ,ro q..vrr s�'cac s+M.� x eRe-rcnea� er veoec+we Meuwrrcr rieat ro rt,wr►n 4. GLflf14GTLR 9y{L �ry �q�p '-EN1LL M�T 1 Dd7i11LW PR1qc 70 GNGaVA1TYf i� PIf4 �' WL� NAfHtN6 DASN W/3' tK�11 DHd�A 1k8� lPPIY,JOIP T11GRqkfLY WATEt TT� f.1�UIaY MfHt H.Nif?G MD R/KP 6RQAD 9.q7fli r+cnr c(� f rooK Frusi c�vice PR�MID dY,Kn.L Moe I PRtT 5A. MBA,B1f pRRa�Bi� RFAVA� swv�ris -0�x tarru�l j P/RT5 W1TT� 5GL �,�� (a� rK�rs� ro na �az R.krror� r� '=111—I I I � I I I I �� "�' ��F�m �� — � i i i—i i i MIX WAr�z & T� =I I I— i—I I I— —I —I �� X+' �� ro �r,+ove AiR I I I I I I I I 1=1 I I �zriu� r�r w� �� Hn" POG�TS I=I I I=I I I—I I I— I I— (s� �cr�a,�) ` "�` ` �"'�' r� raES rav� rt� — 2 X�A11 DIA. lJJD151U�C� NATIVE SOIL SrtRU� �ANriN� Sc�: r�or ro sca� ��Q�� v ww ro a.�ru�e s.a�m s.r��s rwr �� rR� �NriN� sca� rror ro sca� P�ANT NC� DETAI�� irri qation controlier onchar securely to WQ�� existing grounded �plug u i t n l �t t ransformer �8�� G4" I15 v a c, GO h z conduit for ramnta !^nn�rnl �inl ioc secure to wall with appropriate pipe clamps finished surface see sp front right—side section/elevation section/elevation A WALL—MOUNT GONTROLLER 3 not to scale E1v1ITTER— 5EE EMITTER SGFIEDI�E FCR NUM6ER & SIZE —� -i r- : ,��\ ,��j�� \ ,�'%' i �%� \`,� - . . � / �1�i/� '// i� 11�` : � � � � I� ROOT �ALL �,NriN� Pir D DRIP TUbIN6 & EMIITERS 3 not to scale "�+� '��); control wires with �Z" min. service coil anti—siphon remote control valve with flow control and quicklink solenoid pvc male adapter (typ) finished grade pvc lateral line sch. SO see specs. for depth pvc main line sch. SO see specs tor depth pvic e I bow (t yp.) pvc tee or elbow (typ.) notes: t set va I ve �2' mi n. above highest sprinkler served. z see p I ans, I egend and specitications for additional installation notes. �j ANTI-51Ph10N VALVE � not to scale ubb l er fiead- '� Gobra flex hose xSxT ree JG Lateral Pipe PRESSI�iZE GOMPENSATINC� ��LER E ON GO�RA FLF�C f10'SE ASSEM�LY 3 not to scale trom valve volve box finished grade filter pressure regulator - r.� �...,.,�� ..� ,.� � ,�„� � sch. 80 un i on q " �qR valve box extension MINIM�,M br i ck supports I cu. f t. pea grave I sump PRESSURE ��rcR & ��iP (� FILTER ASSEM�LY 3 not to scale -{7� PFR H/7 R FAAITTFRC, INSTAW INSIDE vIEW nefE: � ,�� v�ve oo,c rc DF�i1�R bl.l� GAP: w�N bWZn vDr,-az�TYP�aL) P I/4-INGti TUbPl6 5ratcF Rard D� rs-oz5 �MGFt vrL�E bOz r,�n-am�r �� ctv� RAW 6�D �RI-61RD S I(pD-SI R}� EI611f F-C:Pht l�Rl-tIX� lR G B�ffTfRS FAGTGRY M5iN1� r� c� r�ulr� FWI�f 6RADE I/4-INGH TUbINC� PGLYET1111tTE D15TRIpUf10N TL61N6 wc scrt ao u� N� PVG LATFRAL PIPE PVG SG't AO T¢ OR a1 �-INGti MPl. DEPfH GP �/k-INGtI WA�fD GRAVa � XERI-61RD 8 Ml�rl—GtJTLEr DfZIP EMITTER 3 not to scale � Michael Amone Landsca�e Archiuct - 2010 Ti%OR�WNmNEWfTPIMBITiOF 1/lU�falAqftTllilNfiiWieYTMi I ONKN. Ttfi BR1Te COIfIHRi OFMK ORMYINOf It CO/1'IrO1R� 111Cl1�6NNOli WOKIVlA0.fJRECl. Wpl'/1PFM1CMfECf 16TAN�IILL WOM7A/0711LL NO►11Rf W�' !! R@110011C� M AMV F11W011 d1 A�IIM rYRMWiT!l1PIlY MMfTB11VAOYAL OF 11f lA1OlCX! ARCifIFCf. M PIIOrl1l B.lCIqpNC 7R11M7fFR O� GTA'YLLL �711E weo �ssowrurr wnr�our u�rm ro na wa�a�rE.�recr. ow�� swi nwie newa�urr roR c��x wrtw �u a�se�rts. �arMac arouwa¢�rs Mo rrorEwruas. owrra awu,�couw �u rec�anwr rewn n�au� ro resaia woWC a�or� w n.w. e�ue Maiw�na� wa � rieovom er ne orw�e�. rauie. �rwae wwareMw�rECn�e �sw�s ro urarn Faie r�e �m�.7 ar yuo Paore�n u+e ew�auacs, r�»ES aR warrnn oow�a Pvwrir� r�arEs � AIl existing trees, shrubs and ground covers to remain shall be protected. Any danage caused by Gontractor's work shall be repaired or replaced at the Gontractor's expense and be approved by the owner 2°lanting areas shall be amended as per the tollowing' tor large plonting beds �ackfill mix for individual plants to be: Rototill into the top �r8 inches of soil Yi% nitrified redwood sawdust per I000 sq. ft of area �f,% native soil 3 cubic yards nitrified redwood sawdust Nith the tollowing per cubic yard ot the above miz: 15 Ibs Dolanite � 5 Ibs. Dolanite �i 25 Ibs- Nitroform(38-0-� 1 Ibs Nitroform(38-0-� 25 Ibs. treble superphosphate (P-45-Uj 1 Ibs- treble superphosphate (0-� 3 After amending soil, grade all areos srtaoth with no localized depressions exceeding (/1' AIl areas shall surtace drain with G5 percent minimum slope away fran all buildings, pavinq or other structures 4 Quantities are tor aiding in bidding only Gontractor shall verify all quantities Gonsult with landscape if certain plants can not be located or it substituitions are desired 5 Gontractor shall lay out plant moterial as per plan and receive approval fran Landscape Architect prior to installatian G No plants shall be planted with root bolls or nen pits in a dry condition. 1 Plant all plants as per plonting details in square pits with sides and bottans thoroughly scarified hnend backfill mix and planting beds as noted above. Use a time release fertilizer tablet or packet as per schedule in planting details. S kimediately atter planting, treat all areas with prremergent weed control as per manufacturer's specs prior to top dressing. 9. AIl newly planted material sholl be watered by deep soaking within 3 hours ot planting IO All planting beds shali receive 3 inches of wood chip top dressing (mulch) R Gontractor shall be responsible tor irriqating all new plant material until comQletion and approval of owner I2. Thirty days atter planting Gontractor shall restake and straighten all trees as necessary for proper grorth. Tree stakes and ties should be removed 6y owner two years atter planting �a�.�u�rioN �oR: (MAWA) = MAXIMI Qv1 APPLIED WATER ALZOWANGE ( g a I I o n s p e r y e a r) TOT'AL LANDSGAPE AREA = � 535 SG�IJARE FEET MAWA = (ETo) x (0.62) x [(.7 x LA) +(0.03 x SLA)] ETo = REFEREN(.� EVAPprRANSIPIRATION (INGt1E5 PER YEAR) Efo data fromGlMlS (Galifornia lrrigation Management Informotion System) tor San Jose Area 2009 O S= Er AD,115TMENT FAGrGR LA = LANDSGAPE AREA (SC�IJAfZE FEET) G2 = GONVERSION FAGrOR (TO C�ALLONS) MAWA = (49.�) x (O.GZ) x [(.7 x 7,535) +(0.3 x O)] MAWA = I/I �iA,3f57 r-�AI I/)1.1� PFR vFdr? MAWA = �3395 �,F PER YE4R GALGULATION FOR: ESTIMAT� WATER U5E (gallons per year) ETWU = (ETo) x (0.62) r � I E � + �,ql \ / erwu = esrirnAr� roraL w,ar� u� (�,a�oNS ��) ETo = REPERENGE EVAPOTRANSPIRATION (INU1E5 PER YEAR) 0.62 = GONVERSION FAGTOR (TO 6ALLONS PER 5C�(JARE FOOT) � � _ �Nr F,a�raR �rz�n wu��ts h1A = f1YPROZONE A{?EA IE = IRRIC�ATION EFFIGIENGY (MINIMI,M .70) 5LA = SPEGIAL LANDSGAPE AR�A ET`NU =(49.35) x(O.G2) ( 3 X 7 7,535 + �\ � / EWU = 98,80/o.�i5 6AlLONS PER YEAR EWU = 82.00 GGF's + all plants used for this project are rated at a 0.3 plant factor (low water use) IRRIC�ArION SGf1�E (AFTER ESTAP�LIShMENr PERIOD) Drip valves are estimated to run for thirty minutes - ' four times a week (Valve C�PM x 30 minutes x 3 times per week x 42 weeks per month). Gontractor shall adjust run times for seasonal rainfall. (100% June - October, 25% November - February, �59 March - May) rhe drip irrigation system will be run between 500AM and 700AM and/or between 7�OOPM and 900PM if necessary. fiydrozones are all low water using and shown on p�ans as Valve stations � - 5. OPERATION AND MAINrENANGE NOrES I.Irrigation system will operate during non-daylight hours to limit the etfects of winds and high day time temperatures Irrigation scheduling sha�l also be subject to the ordinance of the Gity of Gupertino Water Eficient Landscape Ordianance. 2 The landscape shall be maintained to ensure water efficiency. A regular maintenance schedule shall include but not be limited to checking, adjusting, ond repairing irrigation equipment; resetting the automatic controller; replenishing mulch; fertilizing; pruning, and weeding in all landscaped areas. 3 Whenever possible, repair of irrigation equipment shall be done with the originally specified materials or their equivalents. �� i ��r oN ��TA i �� _ � � � a c� � v rl � � � b , O h � � U � �+U� O � y � � o ..� � a � y a U � � � a `' M � W � � W � ^ � � W � r � � � A � 0 � Vl � A � U � � � � �1 � h "'� � � H � � U n O Ci � r"1 a � U � 5cqg � MIGIiP6_ A. �, narrore a rn J - �i o No. �94'1 0 ce=P 7r�m> � .� "�C cr ��t4�' PURPOSE �stis�ereview scale: 1/8"=1'-0" sheet title: deta.ils, notes & water usage sheet number: L-3 of three Flow Rate Varies With Model Specitied