Loading...
HomeMy WebLinkAbout3.2ITEM 3.2 TOWN OF LOS ALTOS HILLS :December 5, 2013 Staff Report to the Planning Commission SUBJECT: A REQUEST FOR A SITE DEVELOPMENT PERMIT FOR A TWO STORY ADDITION, A SETBACK VARIANCE FOR THE PROPOSED ADDITION AND SURFACE PARKING SPACES TO ENCROACH WITHIN .THE SIDE .YARD SETBACK AND A VARIANCE` TO ALLOW A PARKING CONFIGURATION THAT . CREATES AN OBSTRUCTED VEHICULAR ACCESS FOR ONE. (1) PARKING SPACE. -IN ADDITION, THE APPLICANT IS REQUESTING A GRADING .-POLICY EXCEPTION; LANDS OF HADDEN; 24874 OLIVE TREE'LANE;:FILE #27343=ZP-SD-GD. FROM: Nicole Horvitz; Assistant Planner APPROVED: Debbie Pedro, AICP, Community Development Director A p RECOMMENDATION: That the'Planning-Commission:- ' story l i Approve the re q uested Site Permit for a two sto addition, a.setback a vriance for. the addition and surface parking spaces to encroach within the side yard setback,; a earance, to allow a parking configuration that creates an obstructed. vehicular .access, and a Grading .Policy exception subj ea to the.- recommended - Findings of Approval and: Conditions . of Approval ,iii Attachments 1 and 2. BACKGROUND The subject property is located at1he eastern side of Olive.Tree Lane. There is currently a 2,391 square - foot residence and 537 square foot, detached- garage built -in 1972 -on the - 1.049 acre property.., The, property- was annexed into the. Town on August 2.1, 2012. The surrounding.. uses, include one and two story single- family homeson adjacent parcels to the east, south, and across .Olive Tree -Lane to the west. 3- The applicant is requesting approval of a Site Development Permit to demolish the existing garage located within the property line. setback and construct a 1,131 square: feet addition to the existing house which includes a new two (2) car garage partially- encroaching -in the side setback and two surface parking spaces within the side yard setback. CODE REQUIREMENTS This application has been forwarded to the Planning Commission for review pursuant to 'Section'- 10-1.1003 Section10-1:1003 (Variances) of the Zoning Ordinance: The - Planning Commission must make affirmative findings in order to approve a variance per Section 10-1.1007 (b) (Attachment 1)., Staff Report to the Planning Commission Lands of Hadden 24874 Olive Tree Lane December 5, 2013 Page 2 of 12 DISCUSSION Site Data: Net Lot Area: 1.049 acres Average Slope: 32.0% Lot Unit Factor: 0.554 Floor Area and Development Area: Area (sgft) Maximum Existing Proposed Increase Remaining Development. 7,500 6,357 7,469 1,143 31 Floor 5,000 2,928 4,059 1,131 941 Site and Architecture The proposed project meets the height, floor area, and development area requirements established in Title 10, Zoning and Site Development, of the Los Altos Hills Municipal Code. The addition is located a minimum of 80' from the west (front) property line, 50' from the east (rear) property line, 18' from the north (side) property line, and 130' from the south (side) property line. The maximum building height on a vertical plane is 25' and the maximum overall height of the building (including chimneys and appurtenances) from the lowest point to the highest point is 30'. Proposed exterior materials consist of stucco, corten steel, and cedar siding, and a standing seam metal roof. The main level has 1,905 square feet of living space consisting of a foyer, laundry, mechanical room, living/dining room, kitchen, master suite, and a two (2) car garage. The second floor has 1,598 square feet of living areawhich includes a bedroom, office;,and gym. Variance The applicant is proposing to demolish the existing two (2) car garage located within the side yard setback (9.2' from the property line) and construct a new two car garage partially located within the side yard setback (18' from the side property line). In addition, two 10' x 20' surface parking spaces are proposed within the same side yard setback up to 10' away from the property line. Per'Section 10-1.601 of the Los Altos Hills Municipal Code the four (4) required parking spaces shall be unobstructed at all times. Due to the topography of the site, the proposed surface parking spaces are obstructing one (1) garage parking space. Pursuant to Section 10-1.601 of the Municipal Code, a total of four (4) parking spaces are required two (2) of which need to be covered. Staff Report to the Planning Commission Lands of Hadden 24874 Olive Tree Lane December, 5, 2013 Page 3 of 12 Setback, Imes 1...' ,• (n) surface 1, , A t — i • parking. 44 Grading Policy Excption Total grading quantities for this.project include 49 cubic yards of cut and 49 cubic yards of fill` for the addition''and surface parking. The Engineering Department has reviewed the proposed grading plan and concluded that it is not in conformance with the. Town's grading.policy. The applicant is requesting -a Grading Policy exception for the Southeast corner of the.proposed' garage for, up to 6.6" of fill. where 3' is allowed by the . Town's Grading Policy. The.. area requiring a.Grading Policy exception is 1-5 square feet. ' -•_ z 'j-....-_ . :...SMT SETBACKS;_` `lam_ i -_ _ _. _ _ _ f w 7 J.I . - 1�•J w `'' `` p to 6'6" of fill Staff Report to the Planning Commission Lands of Hadden 24874 Olive Tree Lane December 5, 2013 Page 4 of 12 Outdoor Lighting The applicant is proposing recessed down lights with this application. Staff has included condition #11 for outdoor lighting, requiring that fixtures be down shielded or have frosted glass, low wattage, and shall not encroach or reflect on adjacent properties. The applicant has submitted lighting specifications indicating that all proposed fixtures will be either shielded, downlights, or have frosted glass. Trees & Landscaping There are no trees proposed to be removed with this application. A landscape screening and erosion control plan will be required after framing of the new addition (Condition of approval #3). Furthermore, any landscaping required for screening or erosion control will be required to be planted prior to final inspection, and a maintenance deposit to ensure viability of plantings will be collected prior to final inspection. Drainage Water runoff generated from the new development will be collected in a 6" PVC pipe and routed to a dispersion trench along the south side of the property. Pursuant to Section 10-2.503, Drainage Facilities Standards, of the Municipal Code, the Engineering Department has reviewed and determined that the proposed drainage design complies with Town requirements. The Engineering Department will review and approve the final drainage plan prior to acceptance of plans for building plan check. Final "as -built" grading and drainage will be inspected by the Engineering Department, and any deficiencies will be required to be corrected prior to final inspection. Neighbor Concerns To date, staff has not heard from any neighbors. Fire Department Review The Santa Clara County Fire Department has reviewed the proposal and is requiring a sprinkler system throughout all portions of the residence (Attachment 3). Staff Report to. the Planning Commission Lands of Hadden 24874 Olive Tree Lane December 5, 2013 Page 5 of 12 Geotechnical Review The Town's geotechnical consultant Cotton, Shires & Associates, Inc. has reviewed the soil and foundation report prepared by Romig Engineers dated June 20, 2013 and recommends_ approval of the permit subject to conditions 15 a & b (Attachment 4). Committee Review The Environmental Design and Protection Committee comments are included in attachment 5. The Open Space Committee reviewed the property. and recommends . an open space easement along the southern portion of the property, which is near Rancho San Antonio open space (Attachment 6). CEOA STATUS The project is categorically exempt under CEQA per Sections 15303 (a). ATTACHMENTS 1. Recommended Findings of Approval 2. Recommended Conditions of Approval 3. Recommendations from Santa Clara County Fire Department.dated September 4, 2013 4. Recommendations from Cotton, Shires and Associates, Inc. dated September 10, 2013 5. Comments from Environmental. Design and Protection Committee dated September 20, 2013 6. Recommendations from the Open Space Committee dated November 12, 2013 7. Worksheet #2 8. Site Development Plans Staff Report to the Planning Commission ATTACHMENT 1 Lands of Hadden 24874 Olive Tree Lane December 5, 2013 Page 6of12 ATTACHMENT 1 FINDINGS FOR APPROVAL OF VARIANCES TO ALLOW TWO (2) UNCOVERED PARKING SPACES WITHIN THE PROPERTY LINE SETBACKS, A PORTION OF THE PROPOSED GARAGE TO BE LOCATED WITHIN THE SETBACK AND THE CONFIGURATION OF PARKING WHICH CREATES OBSTRUCTED PARKING LANDS OF HADDEN — 24874 Olive Tree Lane 1. Because of exceptional and extraordinary circumstances applicable to the subject property, including size, shape,, topography, location or surroundings, the strict application of the :.provisions of this Title is found to deprive such property of privileges enjoyed by other properties•in the vicinity and under identical zoning classification; This site is unique with regard to lot shape and topography. The lot is encumbered by steep slopeing topography surrounding the building pad. Due to the shape, slope, and size of the lot, there is not a suitable alternative location to place, the required two (2) additional parking spaces. The applicant is reducing the nori conformity by. removing an existing tvyo: cat:_garage -and replacing it with two (2) -10x20. surface parking_ spaces_ constructed of asphalt, 2. Upon the granting of the variance, the intent and purpose of the applicable sections of the Zoning Ordinance will still be served and the recipient- of the variance will not be granted special privileges not enjoyed by other surrounding property owners. The intent of the setback. requirements is to provide an undeveloped space between. neighbors for noise, privacy and aesthetic purposes. The parking will be located where. the, existing garage is and will not result in a new impervious area and increased run off. 3: The granting of such variance will not be materially detrimental to. the: public -;welfare or: injurious to the property, improvements or uses within the immediate vicinity :andwithin the. same zoning district. The granting of this variance would not pose. a foreseeable threat: to the public. welfare or 'mjurious to properties. within the same zoning district. 4. The variance will not. authorize a use or activity which is not otherwise expressly _-authorized by the Zoning District regulations governing the parcel of property. Pursuant to the Los Altos Hills Municipal Code Section 10-1.601, a minimum of four (4) parking spaces are required for each property within the Town. The applicant would: -be complying with this requirement. Staff Report to the Planning Commission Lands of Hadden 24874 Olive Tree Lane December 5, 2013 Page 7 of 12 ATTACHMENT 2 ATTACHMENT 2 -.RECOMMENDED CONDITIONS FOR SITE DEVELOPMENT PERMIT FOR AN. -ADDITION, SETBACK VARIANCE, OBSTRUCTED PARKING AND GRADING POLICY EXCEPTION LANDS OF HADDEN, 24874 OLIVE TREE LANE File # 273-13-ZP-SD-GD-VAR PLANNING DEPARTMENT: J. No- `other' modifications to .the approved .plans are allowed except as otherwise first _'=reviewed and approved by the Planning Director or the Planning Commission; depending on the scope of the changes. 2. All existing Blue Gum (E. globulus),. Pink Ironbark (E. sideroxylon rosea), River Red Gum (E. camaldulensis), Swamp Gum (E. iiidis), -Honey Gum (E. melliodora), or Manna Gum (E. viminalis) eucalyptus .trees .on, the property:_located within.: 150.7, of, any; structures or ..,roadways. shall-.-be-.removed- prior _to final-. inspection -of the new-: residence =Removal of eucalyptus trees shall take place between the-be'mning of August and-the-end=ofJanuaryto avoid- disturbanceof nesting birds protected under -the Federal Migratory Bird Treaty Act (MBTA) and California Department of Fish. and. Game Code Section 3500 et seq unless a nesting bird survey is. first conducted and there is a .determination that there are no active nests within the tree. 3. ' After completion of rough framing or at least six (6) months prior to scheduling a final inspection, the, applicant shall submit landscape screening and erosion control plans, for review by the Site Development..Committee' The. application forlandscape screening and erosion control.shall`,be accompanied by the app licable fee and deposit: ` The`plans shall'be reviewed at a noticed -public hearing. Attention shall be given to plantings which will be adequate to breakup the view of the new residence from surrounding properties and streets. All landscaping required for screening purposes and for erosion control (as determined by the City; Engineer) ;must be installed prior to final inspection of the new'resdence.The landscape screening plan shall comply with Section 10-2.809 (water efficient landscaping) of the Los Altos Hills Municipal Code.`to _ A landscape maintenance: p . 4. de osrt in the amount of $5;000 shall b'e po"steel_ prior ;fo f nal inspection:. An inspection of the landscape to. -ensure adequate : establishment ` and maintenance shall be made two years after the installation. The deposit will be 'released at that,time'if the plantings remain viable. 5. The property_ owner shall grant, an; Open Space Easement to the Town ori the ° southhren orhon .of the property as shown on sheet C 3., No structures are;pernutEed and'no'irading or. .fill shall_ be' permitted: Native vegetation may_ be planted within the `easement but no Staff Report to the Planning Commission Lands of Hadden 24874 Olive Tree Lane December 5, 2013 Page 8 of 12 irrigation or sprinkler systems are permitted. The property owner shall provide legal description and plat exhibits that are prepared by a licensed land surveyor and the Town shall prepare the grant document. The grant document shall be signed and notarized by the property owner and returned to the Town prior to acceptance of plans for building permit. 6. Prior to beginning any grading operation, all significant trees, particularly the heritage oak trees, are to be fenced at the drip line. The fencing shall be of a material and structure (chain-link) to clearly delineate the drip line. Town staff must inspect the fencing and the trees to be fenced prior to commencement of grading. The property owner shall call for said inspection at least three days in advance of the inspection. The fencing must remain throughout the course of construction. No storage of equipment, vehicles or debris shall be allowed within the drip lines of these trees. Existing perimeter plantings shall be fenced and retained throughout the entire construction period. 7. Exterior finish colors of all buildings shall have a light reflectivity value of 50 or less and roof materials shall have a light reflectivity value of 40 or.less, per manufacturer specifications. All color samples shall be submitted to the Planning Department for approval prior to acceptance of plans for building plan check. All applicable structures shall be painted in conformance with the approved color(s) prior to final inspection. 8. Prior to requesting the final inspection, a registered civil engineer or licensed land surveyor shall certify in writing and state that "the location of the surface parking, new garage, addition and roof eaves are no less than 40' from the front property line and 10' from the side property line and 30' from the rear property lines." The elevation of the new addition shall be similarly certified in writing to state that "the elevation of the new addition matches the elevation and location shown on the Site Development plan." The applicant shall submit the stamped and signed letter(s) to the Planning Department prior to requesting a final inspection. 9. Prior to requesting the final inspection, a registered civil engineer or licensed land surveyor shall -certify- in -writing and state that""the height"of the new addition complies with the 27' maximum structure height, measured as the vertical distance at any point from the bottom of the crawl space or basement ceiling if excavated below natural grade, to the highest part of the structure directly above (including roof materials)." The overall structure height shall be similarly certified in writing and state that "all points of the buildings (including chimneys and appurtenances) lie within a thirty-five (35 ) foot horizontal band based, measured from the lowest "visible natural or finished grade topographical elevation of the structure along the building line and the highest topographical elevation of the roof of the structure." The applicant shall submit the stamped and signed letter(s) to the Planning Department prior to requesting a final inspection. 10. No new fences are approved. Any new fencing or gates shall require review and approval by the Planning Department prior to installation. Staff Report to the Planning Commission Lands of Hadden 24874 Olive Tree Lane December 5, 2013 Page 9 of 12 11. Outdoor lighting is approved.as shown on the plans. There shall be one light per door or two for double doors. Light fixtures shall have frosted glass or be down lights. No lighting may be placed within setbacks except two entry or driveway lights. Any additional outdoor lighting shall be approved by the Planning Department prior to installation. 12. Skylights, if utilized, shall be . designed and constructed to reduce emitted light (tinted or colored glass, or other material). No lighting may be placed within skylight wells. 13. Fire retardant roofing (Class A) is required for all new construction. 14. All properties shall. pay School District fees to either the Los Altos School District or the Palo Alto Unified School District, as applicable, prior to- acceptance of plans for building plan check The -applicant must take a copy of worksheet #2 to school district offices (both elementary and high school in the Los Altos School District), pay the appropriate fees and provide the Town with a copy of the receipts. ENGINEERING DEPARTMENT: 15. As recommended by Cotton, Shires & Associates, Inc.., in their report dated September 10, 2013, the applicant shall comply with the following: a. Geotechnical Plan Review — The applicant's . geotechnical consultant shall review and approve all geotechnical: aspects of the project building and grading plans (i.e., site preparation and grading, site drainage improvements and design parameters for foundations) to ensure that their recommendations have been properly incorporated. The consultant should evaluate the location and design of the proposed drainage diversion trench from a geotechnical perspective. The results of the plan review should' be summarized by the geotechnical consultant in a letter and submitted -to the Town Engineer for review -prior to acceptance of plans for building plan check b. Geotechnical Field- Inspection The geotechnical consultant shall inspect, test (as needed), and approve all geotechnical aspects of the project construction. The inspections should include, but not necessarily be limited to: site preparation and. grading; site surface and subsurface drainage improvements, and excavations for foundations and retaining walls prior to the placement of steel and concrete. Final site drainage improvements should be inspected for conformance with geotechnical recommendations. The results of these inspections and the as -built conditions of the project shall be described by the geotechnical consultant in a letter and submitted to the Town Engineer for review prior to final inspection. Staff Report to the Planning Commission Lands of Hadden 24874 Olive Tree Lane December 5, 2013 Page 10 of 12 For further details on the above geotechnical requirements, please refer to the letter from Cotton, Shires & Associates, Inc., dated September 10, 2013. 15. The site drainage associated with the proposed development must be designed as surface flow wherever possible to avoid concentration of the runoff. The proposed drainage shall be designed to maintain the existing flow patterns. Final drainage and grading shall be inspected by the Engineering Department and any deficiencies corrected to the satisfaction of the Engineering Department prior to final inspection. A final letter shall be submitted from the project engineer stating that the site drainage was constructed in conformance with the approved plans and recommendations prior to final inspection. 16. Any, and all, changes to the approved grading and drainage plan shall first be approved by the Town Engineering Department. No grading shall take place during the grading moratorium (October 15 to April 15) except with prior approval from the City Engineer. No grading shall take place within ten feet of any property line. 17. Two copies of an erosion and sediment control plan shall be submitted for review and approval by the Engineering Department prior to acceptance of plans for building plan check. The contractor and the property owner shall comply with all appropriate requirements of the Town's NPDES permit relative to grading and erosion/sediment control. All areas on the site that have the native soil disturbed shall be protected for erosion control during the rainy season and shall be replanted prior to final inspection. 18. The property owner shall inform the Town of any damage and shall repair any damage caused by the construction of the project to pathways, private driveways, and public and private roadways, prior to final inspection and release of occupancy permits and shall provide the Town with photographs of the existing conditions of the roadways and pathways prior to acceptance of plans for buildingplan check 19. Two copies of a grading and construction operation plan shall be submitted by the property owner for review and approval by the City Engineer -and Planning Director prior to acceptance of plans for building plan check The grading/construction operation plan shall address truck traffic issues regarding dust, noise, and vehicular and pedestrian traffic safety on Olive Tree Lane and surrounding roadways; storage of construction materials; placement of sanitary facilities; parking for construction vehicles; and parking for construction personnel. A debris box (trash dumpster) shall be placed on site for collection of construction debris. Arrangements must be made with the GreenWaste Recovery, Inc. for the debris box, since they have a franchise with the Town and no other hauler is allowed within the Town limits. 20. A permit for the septic system shall be issued by Santa Clara County Health Department prior. to acceptance of plans for building plan check. 21. Conditions of Santa Clara County Health Department shall be met prior to final inspection Staff Report to the Planning Commission Lands of Hadden 24874 Olive Tree Lane December 5, 2013 Page 11 of 12 FIRE DEPARTMENT: 22. An automatic residential fire sprinkler system approved by the Santa Clara 'County Fire Department shall be included in all portions of the building. Three sets of -plans prepared by a sprinkler contractor . shall be submitted to the Santa Clara County Fire Department (14700 Winchester Blvd., Los Gatos, CA 95032) for review and approval. The sprinklers shall be inspected and approved by the Fire Department; prior to final inspection and occupancy of the newresidence and secondary dwelling unit. 23. This project is located within the designated Wildland -Urban Interface Fire Area. The building construction shall comply with the provisions of the California, Building Code (CBC) Chapter 7A. Vegetation clearance shall be in compliance with CBC Section 701A.3.2.4 prior to project final approval. 24. Approved numbers or addresses shall -be placed on all new and existing buildings in such a position as to be plainly visible and legible from the street or road fronting the property. Numbers shall contrast with their background 25. Potable water supplies shall be protected from contamination cause by fire protection water supplies. It is the responsibility of the .applicant- and any contractors to contact the water purveyor supplying the site of such project, and to comply with the requirements of that purveyor. Such requirements shall be incorporated int6 the design .of any water based fire protection systems, and/or fire suppression water supply systems or storage. CONDITION NUMBERS 5, 7, 14, 15a, 17, 18, 19 and 20 SHALL BE COMPLETED AND SIGNED OFF BY THE PLANNING DEPARTMENT AND THE - ENGINEERING DEPARTMENT PRIOR TO ACCEPTANCE OF CONSTRUCTION PLANS FOR PLAN. CHECK BY THE BUILDING DEPARTMENT. Project approval may be appealed -if done so in writing within 22 days of the date of this notice. The building permit cannot be issued until the appeal period has lapsed. The applicant may submit construction plans to the Building Department after the appeal period is over provided the applicant has completed all conditions of approval required prior to acceptance of plans for building plan check. Upon completion of the construction, a final inspection shall be required to be set with the Planning and Engineering Departments two weeks prior to final building inspection approval. NOTE: The Site Development permit is valid for one year from the approval date (until December 5, 2014) All required building permits must be obtained within that year and work on items not requiring a building permit shall be commenced within one year and completed within two years. Staff Report to the Planning Commission Lands of Hadden 24874 Olive Tree Lane December 5, 2013 Page 12 of 12 Please refer to the Conditions of Project Approval set forth herein. If you believe that these Conditions impose any fees, dedications, reservation or other exactions under the California Government Code Section 66000, you are hereby notified that these Conditions constitute written notice of a statement of the amount of such fees, and/or a description of the dedications, reservations, and other exactions. You are hereby further notified that the 90 -day approval period in which you may protest such fees, dedications, reservations, and other exactions, 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, you will be legally barred from later challenging such exactions. 1� FIRE DEPARTMENT SANTA CLARA COUNTY ATTACHMENT 3 14700 Winchester Blvd., Los Gatos, CA 95032-1818 .(4.08) 378-4010 •(408) 378-9342 (fax) • www.sccfd.org DEVELOPMENTAL- REVIEW COMMENTS SEP 11, 2013 REVIEW No 113 200 ; PERNIL.NbIN OI' LOS ALTOS HILL .1,105 square -foot addition to an existing 2,928 square -foot two-story single-family with attached- garage. NOTE: this property is located in. the Designated Wildland-Urban Area. Comment; #3:"Review of this Developmental proposal is limited to acceptability of site access and water supply as they pertain to fire' department operations, and shall.not be construed as a substitute-fbr-formal`plan review to determine -compliance with -adopted model -'codes.- Prior to performing: any work the applicant shall make application to; and receive from, the: -Building Department all applicable construction permits. . Comment #2:: Fire Sprinklers Required: An 'automatic residential fire sprinkler _system, shall. be !installed in one and two-family dwellings as follows: In all new one- and two-family.dwellings-and" _ ,..} in existing one- ;aqd:^two family dwellings�when, additions are made that increase the building area to ,more than 3;600'square feet. Exception. A 'one time addition to an existing building that does not ;total more than 1,000 square_feet..of building, area. NOTE: The.owner(s), occupant(s), .and any contractors) or subcontractors) are responsible for Consultingwith the water purveyor;of record m;order to determine,if any ; modification or -upgrade of the existing water' service is required. Covered porches, patios, "balconies,' land attic'spaces may require fire sprinkler coverage. A State of California licensed (C-16) Fire Protection 'Contractor shall submit plans, calculations, a completed ppermit application and appropriate fees to this ;department for review and approval prior to be ' n their work _Section R313. , as adopted,: and amended b • . g,t . y LAHTC . • 4 ,Y; srr .. SI .. •• ;•:[r:': -. �,..'t'c.t•.::..;"„tis`: CommenE #3 Waiter Sup1y ~Requirements,` Potable water supplies shall be protected from contamination caused by fire protection water 'supplies. It is the responsibility ofthe applicant and any contractors and subcontractors to contact the water purveyor supplying the site of such project, Viand to complyWnth the requirements: of that puryey_or. Such requirements.shah be incorporated into the design of.:any,water=based fire protection systems, and -or fire suppression water s apply systems or storage coniatners-that may,. b ' physically:connected in any. manner. pan. appliance capable of ` ;causing contairunation of the potable water supply of the purveyor of record.`Final approval of the ;City . PLANS, SPECS; NEW -RMDL; AS•. LAH . ..® ', ❑ ® ❑II Organized OCCUPANCY SFR = ",CONST. TYPE.. V=B AppIIcantNarh_ DATE ,- •, _.'„ - MacArchitecture` 09;/0/2013, PAGE,': 2''oF�2 SEC/FLOORAREA ' LOAD PROJECT DESCRIPTION PROJECT TYPE OR SYSTEM 2 story see plans ' Residential Development Design Review _ NAME OF PROJECT LOCATION SFR-- HADDEN .. -24874 Olive Tree'Ln .Los Altos'Hills' _ TABULAR FIRE FLOW REDUCTION FOR FIRE SPRINKLERS REQUIRED FIRE FLOW @ 20 Psi " BY 1750 1500 - Hardirig;.Doug : ,50%_ _. as the'Sant'Clara County Central Fire Protection District Serving Santa Clara County and the communities o/ Campbell, Cupertino; Los'Altos, _ Los Altos Hills, Los Gatos, Monte. Sereno, and, Saratoga , • :_ :_ FIRE -DEPARTMENT SANTA CLARA COUNTY 14700 Winchester Blvd., Los Gatos, CA 95032-1818 (408) 378-4010 • (408) 378-9342 (fax) • www.sccfd.org DEVELOPMENTAL REVIEW COMMENTS PLAN REVIEW No. 13 IP200 BLDG AppllcantName DATE Mac Architecture 09/04/2013 PERMIT No. SEWFLOOR 2 story systems) under consideration will not.be granted by this office until compliance. with the requirements of the water purveyor of record are documented by.that purveyor as having been met by the applicant(s). 2010 CFC Sec. 903.3.5 and Health and Safety Code 13114.7 ;Comment #4: Premises Identification: Approved numbers or addresses shall be placed on all new sand existing buildings in such a position as to be plainly visible and legible from the street or road (fronting the property. Numbers shall contrast with their background. CFC Sec. 505 'Comment #5: Construction Site Fire Safety: All construction sites must comply with applicable provisions of the CFC Chapter 14 and our Standard Detail and Specification SI -7. To prevent plan review and inspection delays, the above noted Developmental Review Conditions shall be ,addressed as "notes" on all pending and future plan submittals and any referenced diagrams to be reproduced onto the future plan submittal. City PLANS SPECS NEW RMDL ASOCCUPANCY LAH ® [1 [1® [-]SFR CONST. TYPE V -B AppllcantName DATE Mac Architecture 09/04/2013 PAGE 2 OF[�E SEWFLOOR 2 story AREA see plans LOAD PROJECT DESCRIPTION Residential Development . PROJECT TYPE OR SYSTEM Design Review - NAME OF PROJECT SFR - HADDEN LOCATION 24874 Olive Tree Ln Los Altos Hills TABULAR FIRE FLOW 1750 REDUCTION FOR FIRE SPRINKLERS REQUIRED FIRE FLOW 0 20 PSI 1500 BY Harding, Doug 5070 Organized as the Santa Clara County Central Fire Protection District Serving Santa Clara County and the communities of Campbell, Cupertino, Los Altos, Los Altos Hills, Los Gatos, Monte Sereno, and Saratoga (77) ATTACHMENT 4 COTTON, SHIRES AND ASSOCIATES, INC. CONSULTING ENGINEERS AND GEOLOGISTS September 10, 2013 L5263 RECEIVED. TO: Nicole Horvitz Associate Planner SEP j 2 2p13 TOWN OF LOSALTOS HILLS 26379 Fremont Road TOWN Of 10SAlTo �iLL e Los Altos Hills, California 94022 s SUBJECT: Geotechnical Peer Review: ; RE: - Hadden Addition/Remodel/Variance - 273-13-ZP-SD-GD-VAR _ .-..__...___.-..-. 24874 Olive Tree. Lane, At your request, we havecompleted a geotechnical peer review- of the site development - and grading permit applications, for the - proposed site -improvements using'the following documents: • ; Geologic anal, Geotechnical Investigation (report) prepared by ? Romig Engineers,, Inc.-dated.June 20,2013; • Architectural- Plans -(16 sheets) -prepared by NIAC, dated April 11- 2013; and Civil Plans (3 sheets)'prepared'by Giuliani & Kull, dated. July 11, 2013.,. _.. _. In addition, we have -reviewed pertinent technical'data from our'office files -and performed a recent site inspection.. DISCUSSION The applicant ,proposes to demolish the existing garage and, construct an addition to the `-northeastern portion ,of the ,exiting. residence. Remodeling of the residence and modifying -.the `lower driveway area are proposed. Various site drainage improvements -are proposed''a d_Jhe-existing site.septic.,leachfield is to be.modified. A variance is requested to extend the addition into a side yard setback. Provided estimates of project grading include 49 cubic yards of cut and 49 cubic yards of fill. Northern California Office Central California Office Southern California Office 330 Village Lane 6417 Dogtown Road 550 St. Charles Drive, Suite 108 Los Gatos, CA 95030-7218 San Andreas, CA 95249-9640. Thousand Oaks, CA 91360-3995 (408) 354-5542 • Fax (408) 354-1852 (209) 736252 • Fax (209) 736-1212 (805) 497-7999 • Fax (805) 497-7933 www.cottonshires.com Ms. Nicole Horvitz September 10, 2013 Page 2 L5263 SITE CONDITIONS The subject property is characterized, in general, by moderate to steep southeast -facing topography. The existing house and garage are situated on a relatively level cut and fill pad. Drainage at the site is generally characterized by sheetflow directed to the southeast. The site is underlain, at depth, by bedrock of the Franciscan Complex. The project borings encountered sandstone and shale. These materials are locally overlain by colluvial soil and artificial fill materials. The_ property is located approximately 0.6 Mile southwest of the mapped potentially active Berrocal Fault. CONCLUSIONS AND RECOMMENDED ACTION The proposed residential construction is constrained by potential compression and creep of artificial fill materials and very strong seismic ground shaking. The Project Geotechnical Consultant has performed an investigation of the site and has provided geotechnical design recommendations that are in general conformance with prevailing standards. The Project Geotechnical Consultant has recommended that new. additions . be supported on drilled pier foundations that extend through the fill and colluvium and into bedrock. We recommend approval of. the site development. and grading permit applications from a geotechnical standpoint, with the following conditions: 1. Geotechnical Plan Review - The Project Geotechnical Consultant should review and approve all geotechnical aspects of the development plans (i.e., site preparation and grading, site drainage improvements and design parameters -for foundations)-.---' to ensure that their recommendations have been properly incorporated. The consultant should evaluate the location and design of the proposed drainage diversion trench from a geotechnical perspective. The results of the Geotechnical Plan Review should be submitted to the Town along with other documents for building permit plan -check. 2. Geotechnical Construction Inspections - The Project Geotechnical Consultant should inspect, test (as needed), and approve all geotechnical aspects of the project construction. The inspections should include, but necessarily be limited to: site preparation and grading, site surface and subsurface drainage COTTON, SHIRES AND ASSOCIATES, INC. Ms. Nicole Horvitz September 10, 2013 Page 3 L5263 improvements and excavations for foundations prior to the placement of , steel and ' concrete. - Final site drainage improvements should be inspected . for conformance with geotechnical recommendations. The results of these inspections and the as -built conditions of the project should- be described -by the Project . Geotechnical Consultant in a letter and submitted to the Town. Engineer for review prior to final (as -built) project approval. LIMITATIONS This geotechnical peer review has been performed to provide technical advice to assist the Town in its discretionary permit decisions. Our services have been limited to review of the documents previously identified, and a visual review of the property. -Our opinions and conclusions are made in accordance with generally accepted principles and practices of the geotechnical profession. This warranty is in lieu of all other warranties, either expressed or implied. TS:DTS:kd Respectfully submitted, COTTON, SHIRES AND ASSOCIATES, INC. CITY GEOTECHNICAL CONSULTANT c�t Ted Sayre Principal Engineering Geologist CEG 1795 David T. Schrier Principal Geotechnical Engineer GE2334 COTTON, SHIRES AND ASSOCIATES, INC. ATTACHMENT 5 ENVIRONMENTAL DESIGN and PROTECTION COMMITTEE Applicationfor: SL.o----_._-------------•---------------------------------------r.- ...------ Applicantname --- ........................................... .... Applicant Addressc'.t9t COMMENTS Site Lighting fv - -- - Noise -_ - -- -- - - - - �c ------------•--------------- --....'.._....._ - - - . -•------------------------------------------------ . _.:. Creeks Drainage- �..------------------•-------------------------- - --------- - - - - - Easements tt {• Lot --c--------�cscc..Q--1' - '_ - `- ° -= ------ --------•----- - - - Existing_Vegetation - -= -= -- c9t�rei o2 e` -i, e.�,. ------------•-------- ---------------------- ---- ------ --------------- ----- - lJ Mitigation ..J:- _--- --- -- -- - -- -- - - - - — - -- - I Reviewed by: Date: Nicole Horvitz C); ATTACHMENT 6 , From: roger@spreen.com Sent: Tuesday, November 12, 2013 3:4.8 PM To: Nicole Horvitz Cc: -George Clifford Subject: RE: Olive Tree -Hadden Nicole: I toured the site on Olive Tree Lane with the architect, and' reviewed myAndings with'the-Open Space Committee in our October meeting. This site sits on a ridge overlooking the MROSD open space hills,. and includes a peculiar long,"finger- shaped area- extending downslope from- the- house: area.' The portion of the lot relevant to the -construction/planning is not an issue for Open Space,- but the steep, unused area downsloPe of the -house is a,strong- candidate to be place in an open space easement. It is far too steep for development, and it for�s:pact,;of a;continuous,band of undeveloped natural. lands contiguous with the MROSD,lands. The open space;°naturat�aesthetirs and'the �chapparal/desert=like:'habitat'are'highi=valu�e;'and °sh'oulttbe•pre'�ewed`�' �• with -an open space easement.,- t _ Fidentified a contour line`With"you, below which we recommend an open space easement; this should cause no hindrance for the -`house development plans, either currently or in the future. It• was difficult to even'd- iinb down the slope '•-`the architect mentioned he'd never even been down there before. There is existing water drainage down. the slope,'"including a constructed concrete half -pipe (which is, unfortunately, not located within the legal storm drain easement which runs along the' property boundary; the pipe runs at an angle away from the boundary). L.hope this is helpf i inndetermining the'conditions •ofapproval t`or the devol'opment;`by- means let me Know if`tn `tielof-any'-servi'ce-to'you or the homeowners. Cheers;- ATTACHMENT 7 RECEIVFn 3 -TOWN OF LOS ALTOS, HILLS PLANNING DEPARTMENT . Tlir„q v. ®d., awUS HILLS 26379 Fremont Road • Los Altos Hills, California 94022 - (650) 941-7222 6TAX (650) 941-3160 WORKSHEET #2 EXISTING AND PROPOSED DEVELOPMENT AREA AND FLOOR AREA • TURN IN WITH•YOUR APPLICATION • . PROPERTY OWNER'S NAME David Hadden and Saina Hadden PROPERTY ADDRESS 24874 Olive Tree Lane, Los Altos Hills 94024 CALCULATED BY Michael Chacon DATE- October.21, 2013 1. DEVELOPMENT AREA Existing Proposed Total (SQUARE FOOTAGE) (Additions/Deletions) A. House and Garage (from Part 3. A.) 2,928 1,105 4,059 B. Decking 968 0 968 C. Driveway and Parking 3. FLOOR Al (sQu,4RE. FOOTAGE) Existing, Proposed:.. Total: -(Additions/Deletons).....� ___.. A. House and Garage . a. 1st Floor 1.525 380 1.900 b. 2nd Floor 866. 732 1.595 P. _. Attic and Basement TOTALS 2,928 Maximum Floor Area Allowed - MFA (from Worksheet #1) . _ . WN USE ONLY CHECKED BY 9 5,000 DATE