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TOWN OF LOS ALTOS HILLS July 22, 1998
Staff Report to the Planning Commission
RE: SLUE DEVELOPMENT PERMIT FOR A NW RESIDENCE, CABANA AND
POOL; LANDS OF MURTHY AND SRINATH; 12010 ELSIE WAY; FILE 29-98-
ZP-SD.
FROM: Susan Stevenson, Planner
APPROVED BY: Curtis S. Williams, Planning Direct13
RECOMMENDATION That the Planning Commission:
Approve the requested Site Development Permit, subject to the recommended conditions
of approval.
BACKGROUND
The subject property is a vacant lot located at the southeast intersection of Concepcion
Road and Elsie Way. Although the property is vacant, there had been some grading on
site during the 1940's prior to the incorporation of the Town. There are several pine trees
along Concepcion Road and Elsie Way.
The subject property is lot 6 of tract 7614 which was subdivided in 1987. Although the
microfilm for this subdivision has been misplaced, staff recalls from previous projects
that the only lot specific conditions concerned the 3 lots on Via Arline regarding drainage
through the swale.
CODE REQUIREMENTS
As required by Section 10-2.301 of the Site Development Ordinance, this application for
a new residence has been forwarded to the Planning Commission for review and
approval. Criteria for review from the Site Development Ordinance include grading,
drainage, building siting, pathways, landscape screening and outdoor lighting. Zoning
Code review encompasses compliance with floor and development area requirements,
setbacks, height and parking.
Planning Commission
Lands of Murthy and Srinath
July 22, 1998
Page 2
DISCUSSION
Site Data:
Gross Lot Area: 1.203 acres
Net Lot Area: 1.067 acres
Average Slope: 12.7%
Lot Unit Factor: 1.01
Floor Area and Development Area:
Area Maximum Proposed Existing Increase Left
Development 14,057 14,000 0 +14,000 +57
Floor 5,894 5,893 0 _ +5,893 +1
Site and Architecture
The applicant is requesting approval of a site development permit for a new partial two
story residence with an attached three-car garage. The house would include 4,622 square
feet on the first floor and 630 square feet in the garage, and 365 square feet on the second
floor. A 276 square foot cabana is proposed in the rear yard area.
The height of the residence would range from 14 feet at the garage to 23 feet at the
bedroom wing and 26 feet at the center portion of the residence. The second story portion
of the residence has been nested in the center of the building and would be completely
under the roofline as viewed from the front elevation, with some second story windows at
the rear elevation. A large window is proposed at the family room for light and volume in
that area of the residence. Most of the second story areas are located in the volume of the
roof and alternative materials are proposed to break up-exterior elevations. Story poles
have been placed on the site for the Commission's review.
Proposed exterior materials include brick veneer along the center, entry portion of the
residence, with wood siding around the remainder of the residence. Slate roofing is
proposed with brick veneer chimneys and wood windows and doors. Several skylights are
proposed throughout the bedroom wing and two skylights are proposed at the second
story office. All skylights are required to be designed to reduce emitted light and no
lighting may be placed within the wells. The front entry is a one story element with the
same eave height (12 feet) as the main portion of the front elevation. A small window is
proposed along the front elevation of the roof, to emphasize the entry. Exterior colors
have not yet been chosen. Staff will review proposed colors for conformance with the
Town's adopted color board, prior to the painting of the residence.
Planning Commission
Lands of Murthy and Srinath
July 22, 1998
Page 3
The residence is proposed at the more level portion of the site, and minimal cut is
proposed, although fill for the residence has been designed at the maximum allowed per
the Town's grading policy. Lowering the residence would increase the slope of the
driveway which would then no longer meet the Town's requirements for driveway slopes.
The applicant has worked with staff to lower the pad elevation of the residence to the
maximum extent feasible while maintaining an allowable driveway slope.
The cabana has been shown along the northeast of the pool. The cabana is proposed to be
276 square feet in size. The cabana would include a full bath and a bar although the size
of the structure would restrict its being used as a guest house or second unit.
The applicant has designed the development on the; lot to within 57 square feet of the
maximum development area and the residence and cabana to within 1 square foot of the
maximum floor area. Therefore, staff has included a condition of approval (#11) requiring
that a disclosure statement be filed with the propert stating that the area approved with
this application is the maximum allowable for the loti
Cabana
The proposed cabana is located at the north corner of the lot. The structure has been
designed with the same roof pitch as the main residence. The exterior material for the
cabana would be wood siding to match the residence. The finished floor of the cabana is
proposed to be approximately 2 feet above the natural grade, within the limit for
accessory buildings, as outlined in the Town's grading policy.
Driveway &Parking
The circular driveway is proposed to enter from Elsie Way, with the majority of the
circular drive located out of the setback. Alternate iely, the leg of the driveway which
provides access to the garage would be located completely within the side yard setback.
The driveway is 14 to 15 feet wide along most of the area, except for the turnaround for
the garage spaces and the parking space located along the front of the residence. The
garage entry will not be seen from Concepcion Road or Elsie Way, as recommended by
the Town's Design Guidelines. The Zoning Ordinance requires at least 4 on-site parking
spaces. The garage includes 3 of the 4 required spaces, with the 4`h located at the turnout
of the driveway, in front of the residence.
Outdoor Lighting
Outdoor lighting has been shown on the elevation sheets of the plans. The applicant
proposes one light per exit and staff has included a condition (#8) for outdoor lighting,
requiring that fixtures be downshielded and that all locations be approved by the Planning
Department, with a maximum of one fixture per exit except at the garage and front entry.
Planning Commission
Lands of Murthy and Srinath
July 22, 1998
Page 4
Trees &Landscaping
There are several pines and shrubs along Concepcion Road which will help to screen the
new residence from the road, although several of the pines have been identified as
diseased and would be removed. Of the 5 pines located along the Elsie Way property line,
only 1 is proposed to be removed for the driveway.
A landscape plan will be reviewed at a site development hearing once the house is
framed. Any planting required for screening or erosion control will be required to be
planted prior to final inspection. The residence would be visible along Concepcion Road
and emphasis should be given to planting along the north corner of the lot to mitigate
views of the rear 2 story portion of the residence. The Environmental Design &
Protection Committee commented that new planting should include native species.
Grading &Drainage
The residence has been located at the most level area of the lot. The house is proposed
with the finished floor 11/ to 4 feet above the natural grade, with only minimal areas of
the house which exceed the 3 foot limit for residences outlined in the Town's grading
policy. The residence steps from the garage down to the center portion of the residence
and again to the bedroom wing.
The elevation (north) facing Concepcion shows the finished floor 2 to 3.5 feet above
grade. If the Commission feels it would be beneficial to reduce the visual impact at this
elevation, either some additional stepping could be required or the applicant could be
required to backfill against this wall, to minimize exposed foundation walls.
A retaining wall is proposed along the southeast of the driveway, with a maximum height
of 4 feet at the garage and meets natural grade at the south end of the wall. The remainder
of the driveway has been designed with minor grading to reduce the slope of the driveway
entrance to the property.
The pool is proposed to be located at natural grade at the north corner of the decking and
cut 3.5 feet at the south end of the decking. The Town grading policy allows for up to 4
feet of cut for a pool.
The Engineering Department has reviewed the plans and has recommended conditions of
approval as specified in Attachment 1. Drainage is designed to be collected around the
front of the house and to outlet at the northwest of the house. Drainage along the
southeast of the residence and driveway area is proposed to be collected and outlet toward
the back of the property. 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.
Planning Commission
Lands of Murthy and Srinath
July 22, 1998
Page 5
Geotechnical Review
The Town's geotechnical consultant has reviewed the proposed plan and has determined
that the project is geotechnically feasible. The consultant indicated that the previously
compacted fill on the site was not completed to today's engineering standards and that the
area of fill should be removed and recompacted. The consultant also recommends that the
final drainage plan be reviewed by the project geotechnical consultant and the Town
Engineer prior to submitting plans to the building department for building plan check.
The Town's geotechnical consultant's comments have been incorporated into the
conditions of approval (#10).
Fire Department Review
The Santa Clara County Fire Department reviewed ithe plans and has requested that the
property address be clearly visible from the street. The flow capacity of the nearest fire
hydrant will not be adequate for a home of the proposed size. Fire sprinklers have been
required to mitigate for the inadequate fire flow, although the property owner has the
option to install fire hydrants per the Fire Department's requirements in lieu of the
sprinklers. The Fire Department recommendations have been included as conditions in
Attachment 1.
Committee Review
The Pathways Committee has requested that the Ella path along Concepcion Road be
restored. This has been added as condition #21. The Environmental Design Committee
recommends that 50% of the new landscaping proposed for the new residence be native
and drought resistant. Staff has incorporated these comments into condition of approval
#2.
Staff is available to answer any questions that the Commission or the public may have.
ATTACHMENTS
1. Recommended conditions of approval;
2. Comments from Santa Clara County Fire Department, dated March 16, 1998;
3. Letter from Cotton, Shires and Associates, dated March 30, 1998;
4. Letter from Pathways Committee, dated March 23, 1998;
5. Environmental Design & Protection Committee evaluations, received March 13,
1998;
6. Worksheet#2;
7. Development plans
cc: Srinath Murthy and Shashi Srinath Michael Helm
22023 Baxley Court 200 Seventh Ave, #110
Cupertino, CA 95014 Santa Cruz, CA 95062
Planning Commission
Lands of Murthy and Srinath
July 22, 1998
Page 6
ATTACHMENT 1
RECOMMENDED CONDITIONS FOR SI 1'h DEVELOPMENT PERMIT
FOR A NEW RESIDENCE IAND POOL
LANDS OF MURTHY AND SRINATH, 12010 ELSIE WAY
A. PLANNING DEPARTMENT:
1. Any modifications to the approved plans shall be approved by the
Planning Director or the Planning Commission, depending upon the scope
of the changes.
2. Subsequent to final framing, a landscape screening and erosion control
plan shall be reviewed at a Site Develiopment Hearing. Particular attention
shall be given to plantings which will be adequate to break up the view of
the new residence from surrounding properties and streets, with special
attention given to planting along the north corner of the lot. The applicant
should include 50% of the proposed planting as native drought resistant
materials. All landscaping required for screening purposes or for erosion
control (as determined by the City Engineer) must be installed prior to
final inspection, unless the Planning Director finds that unusual
circumstances, such as weather or site conditions, require that planting be
delayed. In those instances, a deposit of an amount equal to the cost of
landscape materials and installation, to the satisfaction of the Planning
Director, shall be submitted to the Town. Landscaping shall in any event
be installed not later than six months after final inspection, or the deposit
will be forfeited.
3. A landscape maintenance deposit (oif certificate of deposit), equal to the
cost of materials and installation for all landscaping required for screening
purposes or for erosion control (as determined by the City Engineer), but
not to exceed $5,000, shall be posted prior to final inspection. An
inspection of the landscape to ensure adequate establishment and
maintenance shall be made two year after installation. The deposit will
be released at that time if the plantings remain viable.
4. Prior to beginning any grading or construction operations, all significant
trees in the vicinity of construction shall be fenced at the dripline. The
fencing shall be of material and structure to clearly delineate the dripline.
Town staff must inspect the fencing and the trees to be fenced prior to
commencement of grading or construction. The fencing must remain in
Planning Commission
Lands of Murthy and Srinath
July 22, 1998
Page 7
place throughout the course of construction. No storage of equipment,
vehicles or debris shall be allowed within the driplines of these trees.
5. Paint colors shall be chosen by the applicant and approved by staff in
conformance with the Town's adopted color board, and shall exhibit a
light reflectivity value of 50 or less. Roofs shall use materials which have
a light reflectivity value of 40 or less. White trim area should be
minimized, particularly on large surfaces such as doors, columns, railings,
and trellises. A color sample 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.
6. Skylights shall be designed and constructed to reduce emitted light. No
lighting may be placed within skylight wells.
7. Fire retardant roofing is required for the new construction.
8. Outdoor lighting locations and specifications shall be submitted for
Planning Department approval prior to acceptance of plans for building
plan check. Locations should be kept to a minimum with 1 light per exit
and 2 allowed at the entry and garage. Any additional outdoor lighting
shall be reviewed with the landscape plan. Lighting fixtures shall
generally be downlights. Exceptions may be permitted in limited locations
(entry, garage, etc.) or where the fixtures would not be visible from off
site. Any security lighting shall be limited in number and directed away
from clear view of neighbors, and shielding with shrouds or louvers is
suggested. Lighting shall be low wattage, shall not encroach or reflect on
adjacent properties, and the source of lighting should not be directly
visible from off site. No lighting may be placed within the setbacks except
for 2 driveway or entry lights, except where determined to be necessary for
safety.
9. Standard swimming pool conditions:
a. Lights shall be designed so that the source is not visible from off-
site.
b. Drainage outfall structures shall be constructed and located to the
satisfaction of the City Engineer.
c. Fencing or a locking pool cover is recommended for safety.
d. Equipment shall be enclosed on all four sides for noise mitigation
and screening.
Planning Commission
Lands of Murthy and Srinath
July 22, 1998
Page 8
10. As recommended by Cotton, Shires & Associates in their report dated
March 27, 1998, the applicant shall comply with the following:
a. The applicant's geotechnical consultant shall review and approve all
geotechnical aspects of the of the development plans (ie. Site
preparation and grading, site drainage improvements and design
parameters for foundations, swimming pool and driveway) to ensure
that his recommendations have been properly incorporated. We note
some proposed grades adjacent to the residence may be adverse with
respect to proper drainage and the need for potential revisions should
be addressed. In addition, the consultant should consider the use of
perimeter subdrains or other geotechnical design measures to address
potential seepage and accumulation of water in the crawl space.
Minimum 16-diameter foundation piers should be considered since
that is the prevailing minimum standard of practice within the Town.
The results of the plan review should be summarized by the
geotechnical consultant in a letter and submitted tot he Town Engineer
for review and approval prior to issuance of building permits.
b. 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 prior to placement of steel and concrete.The
consultant shall verify that new fill materials are properly keyed and
benched into competent earth materials.
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 (as built)
project approval.
For further details on the above requirements, please refer to the letter
from Cotton, Shires & Associates dated March 27, 1998.
11. A disclosure statement shall be recorded stating that the development area
established for the property under this permit is close to the maximum
currently allowed by the Town andl the floor area established for the
property under this permit is at the maximum floor area currently allowed
by the Town. The Planning Department will prepare the statement and the
signed, notarized document shall be returned to the Town prior to
acceptance of plans for building plan check.
Planning Commission
Lands of Murthy and Srinath
July 22, 1998
Page 9
B. ENGINEERING DEPARTMENT:
12. Any, and all, changes to the approved grading and drainage plan shall be
submitted as revisions from the project engineer and shall first be
approved by the Town Engineering Department. No grading shall take
place during the grading moratorium between November 1 and April 1
except with prior approval from the City Engineer. No grading shall take
place within ten feet of any property line except to allow for the
construction of the driveway access.
13. All public utility services serving this property shall be placed
underground.
14. 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. The first 100 feet of the driveway
shall be rocked during construction and all cut and fill slopes shall be
protected from erosion. 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.
15. 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 plan shall address truck traffic
issues regarding dust, noise, and vehicular and pedestrian traffic safety on
Elsie Way and surrounding roadways; storage of construction materials;
placement of sanitary facilities; parking for construction vehicles; and
parking for construction personnel. In particular, the plan should address
how construction personnel vehicles will be parked so as to leave the
roadway clear. A debris box (trash dumpster) shall be placed on site for
collection of construction debris. Arrangements must be made with the
Los Altos Garbage Company for the debris box, since they have a
franchise with the Town and no other hauler is allowed within the Town
limits.
16. 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
shall provide the Town with photographs of the existing conditions of the
roadways and pathways prior to acceptance of plans for building plan
check.
' I
,I
Planning Commission
Lands of Murthy and Srinath
July 22, 1998
Page 10
19. The driveway shall be required to be fully constructed and to be roughened
where the pathway intersects, to the satisfaction of the City Engineer,prior
to final inspection.
20. The property owner shall be required to connect to the public sanitary
sewer prior to final inspection. An encroachment permit shall be required
to be issued by the Public Works Department for all work proposed within
the public right of way prior to submittal of plans for building plan check.
Connection fees shall be collected with the building permit fees.
21. 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. A final grading and drainage plan shall be submitted for
approval by the Engineering Departn dent prior to acceptance of plans for
building plan check. 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 letter shall be
submitted from the project engineer stating that the drainage
improvements were installed as shown on the approved plans and in
accordance with their recommendations prior to final inspection.
22. The type IIB pathway along Concepcion Road shall be required to be
rehabilitated to the satisfaction of the City Engineer prior to final
inspection.
C. FIRE DEPARTMENT
23. The driveway shall be a minimum of 14 feet wide, shall have a vertical
clearance of 13 feet six inches, shall be designed and maintained to
support the imposed loads of fire apparatus (40,000 pounds) and shall
have an all weather surface. Minimum circulating turning radius shall be
36 feet outside and 23 feet inside. I
24. The property address shall be placed on the property so that it is clearly
visible and legible from Fernhill Drive. The address numbers shall be a
minimum of four inches high and shall contrast with the background color.
25. Prior to final inspection, the applicant shall install a fire sprinklering
system to assure that adequate flow is available to the residence. The
design of the fire sprinklering system shall be reviewed and approved by
the fire department prior to acceptance of plans for building plan check.
Planning Commission
Lands of Murthy and Srinath
July 22, 1998
Page 11
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.
CONDITION NUMBERS 5, 8, 10a, 11, 14, 15, 16, 20, 21 AND 25 SHALL BE
COMPLETED AND SIGNED OFF BY THE PLANNING DIRECTOR AND THE
CITY ENGINEER PRIOR TO ACCEPTANCE OF CONSTRUCTION PLANS
FOR PLAN CHECK BY THE BUILDING DEPARTMENT.
Properties residing within the Los Altos School District boundaries must pay School
District fees before receiving their building permit from Los Altos Hills. The
applicant must take a copy of Worksheet#2 to both the elementary and high school
district offices, pay the appropriate fees and provide the Town with a copy of their
receipts.
NOTE: The Site Development permit is valid for one year from the approval date (until
July 22, 1999). All required building peniiits 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.
ATtACHNMENx2
, ��� EIRE DEPARTMENT
SANTA CLARA COUNTY CONTROL NUMBER
-,;,:111 14700 Winchester Blvd., Los Gatos, CA 95030-1818 BLDG PERMIT NUMBER
COURTESY 8-SERVICE (408) 378-4010 (phone) • (408) 378-9342 (fax)
PLAN REVIEW NUMBER 98-0549
FILE NUMBER
DEVELOPMENT REVIEW COMMENTS
CODE/SEC. SHEET NO. REQUIREMENT
Review of proposed new 5,617 square foot single family residence with attached
garage.
The planner for this project is Ms. Suzanne Davis
1 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 for formal pian review to determine compliance with
adopted model codes. Prior to performing any work the applicant shall apply to
the Building Department for applicable construction permits.
UFC 2 Required Fire Flow: Required fire flow for this project is 2000 GPM at 20 psi
Appendix
III-A residual pressure. The required fire flow is not'available from area water mains
and fire hydrant(s) which are spaced at the required spacing.
UFC 3 Required Fire Flow Option (Single Family Dwellings): Provide required fire
903.2 flow from fire hydrants spaced at a maximum of 500 feet OR Provide an
approved fire sprinkler system throughout all portions of the building. The
fire sprinkler system shall conform to National Fire Protection Association
Standard #13D, 1994 Edition, and local ordinance requirements.
NOTE 4 Fire sprinkler plans shall be submitted to this office for review and permit
issue. Please note for the fire protection contractor: Design is to include a
4-head hydraulic calculation and, reference the .1994 edition of NFPA 13d.
DISTRICT PLANS SPECS NEW RMDL AS OCCUPANCY CONST.TYPE PERMITTEE DATE PAGE
LAH El El D 0 MICHAEL HELM 03/16/98 12
2
SECJFLOOR AREA LOAD DESCRIPTION BY
Residential Development Hokanson, Wayne
NAME OF PROJECT LOCATION
SFR-MURTHY 12010 Elsie Wy
A California Fire Protection District serving Santa alio County and the communities of
Campbell, Cupertino, Los Altos, Los Altos Hills, Los Gatos, Monte Sereno;Morgan Hill,and Saratoga
CLARA c�� FIRE DEPARTMENT
SANTA CLARA COUNTY
CONTROL NUMBER
14700 Winchester Blvd., Los Gatos, CA 95030-1818 BLDG PERMrr NUMBER
COURTESY;SERVICE (408) 378-4010 (phone) • (408) 378-9342 (fax)
PLAN REVIEW NUMBER 98- 0549
FILE NUMBER
DEVELOPMENT REVIEW COMMENTS
CODE/SEC. SHEET NO. REQUIREMENT
UFC 5 Premises Identification: Approved numbers or addresses shall be placed on all
901.4.4
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 and be a minimum of four inches in height.
DISTRICT PLANS SPECS NEW RMDL AS OCCUPANCY CONST.TYPE PERMITTEE DATE PAGE
LAH ❑ ❑ ❑ ❑ ❑ MICHAEL HELM 03/16/98 2 of 2
SECJFLOOR AREA LOAD DESCRIPTION BY
Residential Development Hokanson, Wayne
NAME OF PROJECT LOCATION
SFR-MURTHY 12010 Elsie Wy
A California Fire Protection District serving Santa Clara County and the communities of
Campbell, Cupertino, Los Altos, Los Altos Hills, Los Gatos, Monte Sereno, Morgan Hill, and Saratoga
ATTACHMENT 3
21 COTTON, SHIRES & ASSOCIATES, INC. RECEWED
CONSULTING ENGINEERS AND GEOLOGISTS MAR 3 0 11998
MarchTOW,H toSALTOSHILLS
L3068
TO: Suzanne Davis
Planner
TOWN OF LOS ALTOS HILLS
26379 Fremont Road
Los Altos Hills, California 94022
SUBJECT: Geotechnical Review
RE: Murthy Residence
12010 Elsie Way,
#29-98-ZP-SD-GD - .
At your request,we have completed a geotechnical review of application for site
development using:
• Geotechnical Investigation (report)prepared by Romig Consulting
Engineers, dated November 12, 1997; and
• Site and Architectural Plans (10 sheets) prepared by Giuliani &
Kull, and Michael Helm, dated October 24, 1997.
In addition, we have reviewed pertinent technical maps from our office files and
completed a recent site inspection.
DISCUSSION
The applicant proposes to construct a nen% residence, swimming pool and
detached recreation room. A new driveway is proposed providing access to the
residence from Elsie Way. Proposed grading includes 194 cubic yards of cut and 194
cubic yards of fill.
SITE CONDITIONS
The subject property is generally characterized by gentle to moderate steep
slopes inclined to the north. In addition, an existing fill prism, apparently constructed
from imported earth materials,is located in the vicinity of the pool and recreation room.
A steep fill slope (42 percent inclination) to approximately 6 feet in height, is located
north of the pool and recreation room. Based on subsurface exploration, the existing fill
does not meet current engineering standards.
Northern California Office Southern California Office
330 Village Lane 5245 Avenida Encinas •Suite A
Los Gatos,CA 95030-7218 Carlsbad,CA 92008-4374
(408)354-5542 • Fax(408).354-1852 • (760)931-2700 • Fax(760)931-1020
e-mail:losg@csageo.com e-mail:carl@csageo.com
Ms. Suzanne Davis March 27, 1998
Page 2 L3068
The property is underlain, at depth, by bedrock materials of the Santa Clara
Formation. The bedrock is overlain by clayey sand and gravel. Drainage is generally
characterized by sheet flow to the north. In addition, an area of possible seepage and
standing water was noted near the southern corner of the proposed residence.
CONCLUSIONS AND RECOMMENDED ACTION
Proposed site development is somewhat constrained by existing fill materials,
which do not meet modern engineering placement standards and the potential for
seasonal seepage. In our opinion, the proposed site development is geotechnically
feasible. The Project Geotechnical Consultant has recommended reworking of the
existing site fill materials. The consultant should consider supplemental measures to
address the potential for seepage and the migration of water into the crawl space
beneath the residence during review of project construction drawings. We recommend
geotechnical approval of permits for the project with the following conditions. The
applicant should transmit a copy of this letter to the Project Geotechnical Consultant.
1. Geotechnical Plan Review - The applicant's geotechnical
consultant shall review and approve-all.geotechnical aspects of
the development plans (i.e., site preparation and grading, site
drainage improvements and design parameters for foundations,
swimming pool and driveway) to ensure that his
recommendations have been properly incorporated. We note
some proposed grades adjacent to the residence may be adverse
with respect to proper drainage and the need for potential
revisions should be addressed. In addition, the consultant should
consider the use of perimeter subdrains or other geotechnical
design measures to address potential seepage and accumulation
of water in the crawl space. Minimum 16-diameter foundation
piers should be considered since that is the prevailing minimum
standard of practice within the Town.
The results of the plan review should be summarized by the
geotechnical consultant in a letter and submitted to the Town
Engineer for review and approval prior to issuance of building
permits.
•
2. 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 prior to the placement of steel and concrete. The
consultant shall verify that new fill materials are properly keyed
and benched into competent earth materials.
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 (as-
built) project approval.
COTTON, SHIRES & ASSOCIATES, INC.
e
Ms. Suzanne Davis March 27, 1998
Page 3 L3068
This review has been performed to provide technical advice to assist the Town
with 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.
Respectfully submitted,
COTTON, SHIRES AND ASSOCIATES,INC.
TOWN GEOTECHNICAL CONSULTANT
Q
Ted Sayre
Senior Engineering Geologist
CEG 1795
Patrick O. Shires
Principal Geotechnical Engineer
GE 770
POS:TS:ad
COTTON, SHIRES& ASSOCIATES, INC.
3/210 ISr," ff v?7 •
Town of Los Altos Hills ATTACHMENT 41 '
Committee on Pathways, Recreation and Parks 1,4
for•
Monday, March 23, 1998 "°
Meeting Agenda Y ��,��
Roll Call, 7:30 pm, Council Chambers .
Review of Minutes
Announcements
Path inspection walk on Saturday, April 4, 1:15 pm at Town Hall?
Next pathways Committee meeting Monday, April 27, 7:30 pm at Town
Hall
Pathways Day Hike: Sunday, May 31 beginning at 1:00 pm from Town
Ball Fields
Repoptssfrom Council and Planning Commission Meetings •
;r
Planning Commission Liasons on Wednesday, April 8 & 22:
- Volunteers?
Old Business
Review Top Ten Maintenance Requests (previous list attached)
Next Pathways day: Saturday May 30, 12:30 pm, at Town Ball Fields
(preceding Town picnic)?
New Business (proposed recommendations)
12246 Via Arline; Lands of Godby: No request
12010 Elsie Way; Lands of Murthy & Srinath: Restore II-B path along
Concepcion Road •
24055 Jabil Lane; Lands of Yeh: Construct a II-B path along Jabil Lane
from Magdalena to the Southeast corner of the property.
14470 Manuella; Lands of Kwong: Construct II-B path along Manuella
13474 Robleda Road; Lands of Danver: No request.
27760 Sherlock Road; Lands of Huang: Provide a pathway easement
on Sherlock.
Presentations from the floor
Adjournment
ATTACHMENTS
ENVIRONMENTAL DESIGN COMMITTEE
RECEIVED
LANDSCAPE/HARDSCAPE EVALUATION MAR 1 3 1998
Applicant's Name: d/fi7 4 7 L -7--/I TOWN OF LOS ALTOS HILLS
Address: /'l V 1----4-/e/-
Reviewed by:Chee 2 / J Date: /,',)"'
Mitigation needed: .
Visibility from off site: from distance (directions), from nearby
neighbors (directions) (include need for screening for privacy).
Noise: from pump/pool , air conditioner , sport court
Light: from fixtures , automobile headlights
Fence materials: color , o,R7en/solid E osion control
Other: SXY1E 4� skov/d2ie Mme. fl-�� Y� ee "� .
y
Planting Plan Evaluation: (Circle required trees and shrubs on plan)
Are species appropriate: Deciduous?
Future height(view, solar, drive/path blockage)
Fire hazard
Hardiness/frost
Drought tolerance
Meet mitigation needs
3,4 51,c y aka £?fr r? kit ►ivvecl, �1r° a� Zr2a c y er 4 c2cs/11/sem
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levaw. 9- , /�cree �,yq
Creeks and drain�ge: Is there a ddnservation easement? Are there sufficient
protections in place. Will fences impact wildlife migration? Invasive species
should not be planted near a waterway.
Other: Are there obstructions to pathways,including future growth of plants? Are all
noise mitigations in place? No construction in road right-of-way:
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7.1I A
lr()C / )•e.51 •764'4.,..)--57c-'6`/e5 4- k 5 Zvi%/�h co,5e'rl/a /0"-7 ,
• (4v- Jo, 5.9e, t�s1,-=•
4 ATTACHMENT (9 , 5 szh.elbM-sl .
TOWN OF LOS ALTOS HILLS
PLANNING DEPARTMENT JUN 1 8. 1998
v 26379 Fremont Road•Los Altos Hills,California 94022•(415)941-7222 •FAX(415)941-3160
WORKSHEET #2 TOWN OF LOS>ALTOS BILLS
EXISTING AND PROPOSED DEVELOPMENT AREA AND FLOOR AREA
• TURN IN WITH YOUR APPLICATION •
PROPERTY OWNER'S NAMEL1("I A. M V� r
JYik) 4 `�AFI4,,-7H I '5 If2-1 NAS
CALCULATED BY I G4,' �P Ni ' 115— 47— QL�.(�. Q
1.: N 1.�1 •- I DA i E Z . L} U
�L�1 �7t moi'
1. DEVELOPMENT AREA (SQUARE FOOTAGE) (S
Existing Proposed Total
(Additions or Deletions)
A. House and Garage(from Part 2.A.)
a 5U 1 7 5C4 17
B. Decking + a
C. Driveway and Parking
(Measured 100'along centerline) 33.0 1**o
D. Patios and Walkways ' -- - - 1377- I ,7 7
E. Tennis Court l
O
F. Pool and Decking 24 OQ 2q-06,
G. Accessory Buildings (from Part B) 1 . Z7
CO 27(>
H. Any other coverage - o
L.— TOTALS
O 1 zt� 000 14 oao
Maximum Development Area Allowed -MDA(from Worksheet#1) I 1441 O -7.45
. FLOOR AREA (SQUARE FOOTAGE)
Existing Proposed Total
A. House and Garage (Additions or Deletions)
a. 1st Floor . C> 5 2*Z. SZ -Z-
b. 2nd Floor s -a2 to S
c. Attic and Basement O
d. Garage
B. Accessory Buildings I"'` '0 I Nic,Loca•AL
a. 1st Floor 7CO . -7c,
b. 2nd Floor o
0
c. Attic and Basement . o o
TOTALS O 58,917 589 o
Maximum Floor Area Allowed-MFA (from Worksheet#1) lj 5 8 94 .'SZ I
77iwN USEr(SNLY [CHECKED BY
I 1,1SA'l E-
iced 2/26/96