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TOWN OF LOS ALTOS HILLS January 19, 2006
Staff Report to the Planning Commission
RE: LANDS OF PURISSIM[A HILLS WATER DISTRICT (CINGULAR
WIRELESS), APN#142-16-077 (216-05-CUP-VAR); CINGULAR WIRELESS
REQUESTS A SITE DEVELOPMENT PERMIT, CONDITIONAL USE
PERMIT AND A' SETBACK-VARIANCE TO ALLOW AN UNMANNED
WIRELESS COMMUNICATIONS FACILITY CONSISTING OF THREE (3)
PAIRED ANTENNAS MOUNTED TO AN 87' TALL TREEPOLE AND
ASSOCIATED GROUND EQUIPMENT LOCATED IN THE REQUIRED
SETBACK.
FROM: Brian Froelich, Assistant Planner
APPROVED BY: Carl Cahill, Planning Director C.L,
RECOMMENDATION: That the Planning Commission:
Approve the requested Conditional Use Permit and Setback Variance, subject to the
recommended conditions and findings of approval in Attachments 1, 2, and 3 and forward
a recommendation of approval to the City Council.
BACKGROUND
The property is owned by Purissima Hills Water District. The site is developed with a
fresh water pump station, access driveway, electrical cabinets, and a portable backup
generator. The property does not have an address. The property is on a northern Town
boundary and is surrounded on three sides by undeveloped Stanford lands and Interstate
280. The nearest residential properties are located on Purissima Road, Horseshoe Lane
and Horseshoe Court to the southeast. The nearest residential building is over 400 feet
away and is sited approximately 25 feet higher in elevation than the base of the proposed
treepole.
PROJECT SUMMARY
Cingular Wireless has submitted plans for an 87 foot treepole, with three (3) paired
antennas and ground equipment. The proposed installations total 320 square feet. Co-
location will be structually possible with this treepole and is required per conditions of
approval. The tieepole and ground equipment are proposed in the required setback and
require a Variance. The entire triangular shaped, 5,292 square foot site is located in
required front, side, or rear setback and any installation would require a Variance. Further
discussion of the proposed Variance follows in a later section of this report and findings
for a setback variance are attached (attachment 3). Wireless installations also require
approval of a Conditional Use Permit. Further discussion is included throughout this
report and findings for the Conditional Use Permit are attached (attachment 2).
Planning Commission
Cingular Wireless
Arastradero Road APN#142-16-077
January 19,2006
Page 2 of 7
A radio frequency analysis for the project was prepared by Hammett & Edison, Inc.,
Consulting Engineers in August of 2005. The report concluded that the proposed
Cingular Wireless service would comply with the FCC's current prevailing standard for
limiting human exposure to RF energy. Therefore, no significant RF energy impact on the
environment or general population is expected. See full report attached(Attachment 8).
DISCUSSION
Per the Wireless Communications Facilities Policy and Section 10-2.301 (c)(7) of the Los
Altos Hills Municipal Code, the proposed 87 foot treepole requires Planning Commission
review. The (0.12 acres) site is zoned OSR-Open Space Reserve. Currently, the site is
being used as a pump facility for the Purissima Hills Water District. Purissima Hills
Water District is not subject to local zoning or building regulations for their utility
installations. The Town has previously approved Conditional Use Permits for wireless
facilities in the OSR district (Little League Fields).
The site also contains a concrete drainage channel that carries Deer Creek water and is
maintained by the Santa Clara Valley Water District (SCVWD). The proposed
installation is subject to an administrative permit that must be obtained by the applicant
from the SCVWD prior to acceptance of the building permit submittal. The proposed
installations are located beyond the required 25 foot top of bank setback per Section 10-
2.702(e) of the zoning code. The creek has been altered from its natural state and there is
no creek bank onsite.
cc—
Left: The corner of Purissima Road and Arastradero Road. The existing mature trees screen the
pump station and would screen the proposed ground equipment.
Right: The corner of Horseshoe Court and Horseshoe Lane. The treepole site is over 400' from this
location and is at least 25' lower in elevation at the base. The proposed pole would blend with the
existing mature trees.
Planning Commission
Cingular Wireless
Arastradero Road APN#142-.16-077
January 19,2006
Page 3 of 7
ALTERNATIVE SITING
Cingular Wireless is attempting to expand coverage in Los Altos Hills with two other
applications currently under review (Town Hall and St. Lukes Church). This site and the
undeveloped Fire District site directly across Arastradero Road (27112 Horseshoe Court)
are the only non-residential sites in this area (4,000 foot radius). The proposed site is
further from existing residential uses than the Fire District site.
VARIANCE
Per Section 10-1.505 of the Municipal Code, structures must be located a minimum of 40
feet from front property boundaries and 30 feet from the side property boundaries. The
ground equipment is proposed along the rear property boundary adjacent to the
undeveloped Stanford lands. Although the equipment pad is located along the rear
property line and located in the rear setback, it is also technically located in the required
front yard setback because of the lot size and shape. The treepole is located in a corner of
the triangular shaped property furthest from the neighboring residential development and
nearest to the Interstate 280. This location is approximately seven feet (7') from the front,
side and rear property lines.
WIRELESS COMMUNICATIONS FACILITY POLICY
The proposed facility is consistent with the Town's Wireless Communications Facilities
Policy because it is proposed on a public facilities site and is a priority for wireless
service location. Visual impacts are minimized by the design of the pole and existing
mature trees screen the location proposed for the ground equipment. The 87 foot tall
treepole is designed to accommodate at least one additional wireless service provider.
Conditions of approval require the applicant's structural engineer to certify that the
wireless communication tower is structurally capable of co-location. A mailing notice,
fact sheet and plan diagram was sent to neighbors within 500 feet (Attachment 9).
The Town's Wireless Communications Facilities Policy #6 states: Any applicant for a
wireless communication facility site shall submit applications, to the best of their
knowledge, for all sites anticipated to be required by the carrier for a three (3) to five (5)
year period, and the requests shall be reviewed by the Planning Commission and City
Council as a master plan application.
Pursuant to the Town's Wireless Communications Facilities Policy, Cingular Wireless
has submitted a 3-5 year Antenna Master Plan Application(s) showing all existing and
anticipated Cingular antenna sites and their coverage within the Town boundaries
(Attachment 7). The Planning Commission should review the attached master plan
application.
Planning Commission
Cingular Wireless
Arastradero Road APN#142-16-077
January 19,2006
Page 4 of 7
CEOA STATUS
In conformance with CEQA requirements, staff prepared an Initial Study/Mitigated
Negative Declaration (Attachment 5).
COMMITTEE COMMENTS
Project plans were routed to the Environmental Design Committee and no comments or
concerns were expressed.
CONCLUSION
The proposed wireless communications facility at the Purissima Hills Water District site
will provide wider cellular phone coverage to the Town. Based on this analysis and the
initial study, the proposed project, as mitigated, will not have a significant effect on the
environment.
ATTACHMENTS:
1. Recommended Conditions of Approval
2. Findings for Approval of the Conditional Use Permit
3. Findings for Approval of the Variance
4. Applicant's Findings and Project Description
5. Initial Study/Notice of Intent to Adopt Negative Declaration
6. Wireless Communications Policy
7. Cingular Wireless 3-5 Year Antenna Master Plan
8. Hammett&Edison,Inc. RF Report August 2005
9. Mailing to Neighbors
10. Development Plans and Photo Simulations (Commission only)
cc: Town Consulting-Tony Kim
2298 3rd Street
San Francisco,CA 94107
Planning Commission
Cingular Wireless
Arastradero Road APN#142-16-077
January 19,2006
Page 5 of 7
ATTACHMENT 1
CONDITIONS OF APPROVAL FOR
_ CONDITIONAL USE PERMIT AND VARIANCE
WIRELESS TELECOMMUNICATIONS (CINGULAR)
PURISSIMA HILLS WATER DISTRICT PUMP FACILITY
APN# 142-16-077, ARASTRADERO ROAD
FILE#216-05-CUP-VAR
PLANNING:
1. Any changes or revisions to the telecommunications facility or its use shall require
an amendment to the applicable conditional use permit(s). Additionally, the
Planning Director may, at any time, schedule a review or revocation hearing
before the Planning Commission regarding the use permit, if any condition of
approval is not being met or the facility is being used inconsistently with the
approved use or in violation of Town development codes.
2. In accordance with the Town's Wireless Communications Policy, the applicant
shall permit the collocation of other carrier's wireless communications equipment
at this facility. If no collocation has occurred within 12 months of this approval,
the Town may initiate conditional use permit review proceedings pursuant to
condition #1. Prior to the issuance of a building permit, the applicant's structural
engineer shall certify that the wireless communication tower is structurally
capable of co-location.
3. The use permit shall expire five (5) years from the date of approval. Renewal of
the permit must be requested in writing, with appropriate fees, prior to the
expiration date.
4. The pole shall be clad with a material resembling tree bark in texture and shall be
an earth tone color with a reflectivity value not greater than 40%. The mono-pine
shall contain sufficient artificial vegetation to resemble a healthy mature pine and
to screen all antennas. A sample of all colors and materials must be reviewed and
approved by the Planning Department prior to acceptance of plans for building
plan check.
5. Landscape screening of the equipment enclosure may be required by the Planning
Department prior to final inspection, if determined to be necessary.
6. The applicant shall submit a signed agreement to the Town that should the use be
discontinued by the carrier, all facilities will be removed not later than ninety (90)
days after discontinuance of the use or abandonment. The agreement shall be
Planning Commission
Cingular Wireless
Arastradero Road APN#142-16-077
January 19,2006
Page 6 of 7
approved by the City Attorney, and must be signed by the applicant and submitted
to the Town prior to acceptance of plans for building plan check.
7. The applicant shall not cause radiation in the frequencies allocated as primary to
the amateur radio service and may be required to correct any and all future
interferenceroblems experienced b other licensed services.
P P Y
8. Cingular Wireless or the operator of the site shall be responsible for repair or
repainting of the proposed facilities in case of vandalism or wear and must do so
within 72 hours of notice by the Town that a complaint has been received.
9. The applicant shall provide an arborist report to include protection measures and
an evaluation of the existing trees located around the site. This condition shall be
met prior to acceptance of plans for building plan check.
10. The applicant shall obtain any required permits as determined by the Santa Clara
Valley Water District. This condition shall be met prior to acceptance of plans for
building plan check.
11. The applicant is required to water sweep roads daily if soil material is carried onto
public streets.
ENGINEERING:
12. Any, and all, changes to the approved Site Plan shall first be approved by the
Town Engineering Department. No grading shall take place during the grading
moratorium (November 1 to April 1) except with prior approval from the City
Engineer. No grading shall take place within ten feet of any property line.
13. Final grading and drainage shall be inspected by the Engineering Department and
any deficiencies corrected to the satisfaction of the Engineering Department prior
to final approval.
14. Any, and all, areas on the project site that have the native material disturbed shall
be protected for erosion control during the rainy season and shall be replanted
prior to final inspection.
15. The applicant 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.
Planning Commission
Cingular Wireless
Arastradero Road APN#142-16-077
January 19,2006
Page 7 of 7
16. 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 Arastradero Road 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 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.
CONDITION NUMBERS 6, 9, 10, 15, AND 16 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.
NOTE: The Site Development permit is valid for one year from the approval date (until
January 19, 2007). 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.
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.
ATTACHMENT 2
CONDITIONAL USE PERMIT FINDINGS
WIRELESS TELECOMMUNICATIONS (CINGULAR)
PLTRISSEVIA HILLS WATER DISTRICT PUMP FACILITY
APN# 142-16-077, ARASTRADER0 ROAD
FILE#216-05-CUP-VAR
1. The proposed use or facility is properly located in relation to the community as a whole,
land uses,and transportation and service facilities in the vicinity;
- The proposed location of the pole and ground equipment is properly located in the
community. The site is currently operated by a public utility (Purissima Hills Water District)
and is surrounded on three sides by Interstate 280 and undeveloped Stanford property. This
location is unique to Los Altos Hills because it is an existing public utility site and the
nearest primary residential building is located over 400 feet away at an approximate 25 foot
higher elevation. The proposed treepole would be located near existing mature evergreen
trees and the antennas will be screened by faux evergreen branches and foliage. The pole
would be placed in the furthest location from adjacent properties and nearest to the Interstate
280. The ground equipment would be located behind the existing pumphouse.
Construction of the proposed wireless communication facility will not place a burden on
existing transportation or utility services. The construction operation will be temporary and
will generate a maximum of three vehicle trips per day. Arastradero Road and Purissima
Road can accommodate this increased demand without a reduction in the level of service.
Maintenance and service of the facility would require one or two vehicle trips per month. If
approved, this installation would improve wireless service in the vicinity.
2. The site for the proposed use is adequate in size and shape to accommodate this use and
all yards, open spaces, walls and fences, parking, loading, landscaping, and such other
features as may be required by this chapter or will be needed to assure that the
proposed use will be reasonably compatible with land uses normally permitted in the
surrounding area;
The site is adequate in size and shape to accommodate the proposed treepole and ground
equipment. The proposed installations total approximately 320 square feet. The site is
currently developed with a pumphouse that pumps a freshwater supply. The proposed
installations can be collocated with the existing uses without any impact. The existing
parking facilities would be sufficient for the limited trips generated by construction and
maintenance of the ground equipment. No trees would be removed to install the treepole or
the ground equipment. Currently, invasive oleanders exist in the location proposed for the
treepole. These would be removed prior to installation.
3. The site is served by streets and highways of adequate width and pavement to carry the
quantity and kind of traffic generated by this proposed use; and
The construction and maintenance of the proposed pole and ground equipment will generate
minimal additional traffic (one-three vehicle trips per day during construction and one-two
per month for maintenance and service). The site is served by Arastradero Road and
Purissima Road. These roads can both accommodate traffic generated by the proposed use.
4. The site does not adversely affect the abutting property or the permitted use thereof.
The conditions of approval of this permit include standards in accordance with the Wireless
Communication Policy to ensure land use compatibility. In addition, Conditions of Approval
will mitigate the visual impacts and future problems with the site. The proposed wireless
communication facility, as conditioned, will not adversely affect other properties or interfere
with permitted uses in the vicinity or the general welfare of the Town.
2
ATTACHMENT 3
VARIANCE FINDINGS
WIRELESS TELECOMMUNICATIONS (CINGULAR)
PURISSIMA HILLS WATER DISTRICT PUMP FACILITY
APN# 142-16-077, ARASTRADERO ROAD
FII E#216-05-CUP-VAR
1. Because of exceptional extraordinary the subject
and extraordina circumstances applicable to �
P
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;
The small (0.12 ac.),Purissima Hills Water District property is surrounded on three sides by
undeveloped Stanford lands and Interstate 280. The size and shape of the property
necessitate a setback variance for any development to the site; the entire site is located in
required setback. Further, the siting of the existing pumphouse and site circulation pattern
limit the siting options for the proposed treepole and ground equipment. The strict
application of the provisions of this Title creates a hardship by rendering the site unusable.
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.
If this application is approved,the purpose and intent of the Zoning Ordinance is still served.
The proposed location of the treepole and ground equipment is furthest from neighboring
development (residence over 400' away). This would not be a grant of special privilege
because the Town has granted a setback Variance for wireless proposals with previous
applications and the size lots of this size are very rare in Town. In addition, the property is
unique in that the adjoining properties are all used nonresidential including an interstate
highway and undeveloped Stanford university lands that negate the purpose for the Town's
normal setback requirements.
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 and
within the same zoning district.
The granting of the Variance for encroachment into the setback would limit potential
�' g
impacts to neighbors or property owners because the proposed location of the treepole and
the ground equipment are at the furthest distance when measured from adjacent
development. The proposed pole and ground equipment meet the FCC limits for human
exposure and the installations will be completed to Building Code standards. No detriment
to public welfare is anticipated.
1
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.
The proposed pole and ground equipment are uses that are consistent with the Town's
Wireless Communications Policy.The Town has previously conditionally permitted utilities
including wireless facilities to operate on lands designated Open Space Reserve where such
installations do not substantially interfere with the purposes of Open Space lands as
described in the Town General Plan Open Space Element. The subjectproperty is owned
by a public agency (Purissima Hills Water District) and all residents and would enjoy
greater wireless service in this area.
2
ATTACHIJ9ENT q
Findings—Arastradero
1) Cingular Wireless currently operates seven unmanned wireless facilities within in the
Town of Los Altos Hills.Due for a number of reasons Iarge sections of Town are
under served.
During our site selection process we attempt to locate Cingular facilities that are most
compatible with surrounding uses and general.Typically, in predominantly
residential areas we search for lands used for civic purposes, commercial, office or
public or private utility.
We feel that the proposed use would be compatible with scale and character of the
area.We believe the proposal is consistent with the current use of the subject
property. The subject property is owned and used as a utility by Purissima Hills
Water.With the installation of this site,we believe that Cingular's coverage in the
immediate and general area surrounding.
2) For the proposed use, Cingular radio frequency engineers have determined through
testing that the proposed antennas would need to operate at an effective height of
approximately 87 feet above grade.The determination is that 87 feet is necessary for
the antennas to have a clear line-of-site to the proposed coverage area.Due to the
natural topography and existing tall trees the necessary height required for this site to
operate effectively is 87 feet. At the proposed height,the proposed structure would be
available for co-location.
3) We have designed the proposal to be unobtrusive, setback from residential uses and
painted to match so that it blends in with the existing surrounding environment.
The proposed use would not be the primary use of the subject property. We feel that
with the limited occupied square footage of the proposed use makes the proposal
accessory to the primary public use. Therefore,we feel that an accessory use of this
scale would be reasonably compatible with the existing land use of the area.
4) The proposed unmanned wireless facility would not create any significant or
noticeable automobile or foot traffic. On average,one or two Cingular technicians
would visit the site for ordinarymaintenance man nance and to ensure effective operation of the
facility.
4) The proposed use will not adversely affect the abutting property or the permitted use
thereof. The proposal has been scaled and designed to be unobtrusive and blend in
with existing character of the vicinity.The proposal will improve Cingular's wireless
service in the Town of Los Altos Hills.This service will provide additional means of
communication and can be used in the event of an emergency when traditional
landline telephones may not be available.In addition,this service is used by many
local businesses of all sizes and in many types of industries,thereby enhancing local
businesses.This facility will operate in full compliance with the FCC's guidelines
and all local environmental guidelines.
ATTACHMENT �
Town of Los Altos Hills
26379 Fremont Road
Los Altos Hills, CA 94022
INITIAL STUDY
In accordance with the policies regarding implementation of the California Environmenfal Quality Act of 1970, this
document,combined with the attached supporting data,constitutes the initial study on the subject project.This initial study
provides the basis for the determination of whether the project may have a significant effect on the environment. If it is
determined that the project may have a significant effect on the environment, an environmental impact report will be
prepared which focuses on the areas of concern identified by this initial study. If it is determined that the project would not
have a significant effect on the environment, it is eligible for a Negative Declaration. If it is determined that the proposed
project could have a significant effect on the environment,however, the significant effects of the project have been reduced
to a less-than-significant level because revisions in the project have been made by or agreed to by the project applicant,then
the project would be eligible for a Mitigated Negative Declaration.
1. Project Title: Cingular Wireless Communication Facility
2. Lead Agency Name and Address: Town of Los Altos Hills
26379 Fremont Road -
Los Altos Hills, California 94022
3. Contact Person and Phone Number: Carl Cahill, Planning Director(650)941-7222
Initial Study prepared by: Brian Froelich,Assistant Planner
4. Project Location: Arastradero Road,Los Altos Hills, CA 94022
APN#142-16-077
Northwest of the Arastradero Road and Purissima Road intersection
and east of Interstate 280 at the Purissima Hills Water District Pump
Station.
5. Project Sponsor's Name and Address: Town Consulting-Tony Kim(for Cingular Wireless)
2298 3rd Street
San Francisco, CA 94107
6. General Plan Designation: OSP-Open Space Preserve
7. Zoning: OSR-Open Space Reserve
8. Description of Project: Cingular Wireless requests a Site Development Permit, Conditional
Use Permit and a Setback Variance to allow an unmanned wireless
communications facility consisting of three(3)paired antennas
mounted to an 87'tall treepole and associated ground equipment
located in the required setback
9. Surrounding Land Uses and Setting: The subject property is located on the north side of
Arastradero Road, east of Interstate 280. Surrounding uses include low
density single-family residences on adjacent properties to the east and
south and unimproved Leland Stanford University Lands to the north.
10. Other public agencies whose approval
is required: None
ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED:
The environmental factors checked below would be potentially affected by this project, involving at least one
impact that is a"Potentially Significant Impact" as indicated by the checklist on the following pages.
0 Aesthetics ❑ Agriculture Resources ❑ Air Quality
❑ Biological Resources ❑ Cultural Resources ❑ Geology/Soils
❑ Hazards&Hazardous ❑ Hydrology water Quality ❑ Land Use/Planning
Materials.
❑ Mineral Resources ❑ Noise ❑ Population/Housing
❑ Public Services ❑ Recreation ❑ Transportation/Traffic
❑ Utilities/Service Systems ❑ Mandatory Findings of Significance
This Initial study has been prepared in accordance with the California Environmental Quality Act. Information and
conclusions in the Initial Study are based upon staff research and the Town's General Plan and Municipal Code.
DETERMINATION
On the basis of this initial evaluation:
I find that the proposed project COULD NOT have a significant effect on the environment,and a NEGATIVE ❑
DECLARATION will be prepared.
I find that although the proposed project could have a significant effect on the environment,there will not be a
significant effect in this case because the mitigation measures described on an attached sheet have been added R1
to the project.A NEGATIVE DECLARATION will be prepared.
I find that the proposed project MAY have a significant effect on the environment,and an
ENVIRONMENTAL IMPACT REPORT is required. ❑
I find that the proposed project MAY have a significant effect(s)on the environment,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 based on the earlier analysis as described on attached sheets,if the effect is a
"potentially significant impact"or"potentially significant unless mitigated."An ENVIRONMENTAL
IMPACT REPORT is required,but it must analyze only the effects that remain to be addressed.
I find that although the proposed project could have a significant effect on the environment,there WILL NOT
be a significant effect in this case because all potentially significant effects(a)have been analyzed adequately ❑
in an earlier EIR pursuant to applicable standards and(b)have been avoided or mitigated pursuant to that
earlier EIR,including revisions or mitigation measures that are imposed upon the proposed project.
Signature:—&061-0 Date: January 11,2006
Carl Cahill,Planning Director
Initial Study Checklist
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Mitigation Impact
Incorporation
L AESTHETICS--Would the project:
a)Have a substantial adverse effect on a scenic vista? ❑ 0 0 Q
b)Substantially damage scenic resources,including,but Ll U 0 121
not limited to,trees,rock outcroppings, and historic
buildings within a state scenic highway.?
c)Substantially degrade the existing visual character or Q _ Q
quality of the site and its surroundings?
d)Create a new source of substantial light or glare
which would adversely affect day or nighttime views in
the area?
IMPACT:
The project consists of an 87 foot tall treepole and a 305 square foot ground equipment enclosure.The Sources:
installation of a treepole and equipment cabinets,as mitigated,will not substantially degrade the visual 1,2,5,20
character and quality of the site and its surroundings.The pole and antennas will be screened by the
treelike appearance of the treepole.The site is currently screened by mature evergreen trees and the
proposed tree pole will blend with the existing trees that surround the site and no trees will be removed as
part of the construct process.The nearest residential building is over 400 feet away from the proposed
location and sits approximately 25 feet higher in elevation.The Los Altos Hills General Plan notes
"important vistas"and`historic sites"in the Open Space Element of the General Plan.None of these
resources listed in the General Plan will be negatively impacted by the proposal.
MPI'IGATION:
The proposed installation will be mitigated aesthetically via the proposed a treepole(monopine).This type
of pole would reduce the visibility of the antennas and the visual impact when viewed from offsite.Project
conditions state that screening may be required following installation of the treepole and ground
equipment.
H.AGRICULTURE RESOURCES: In determining whether impacts to agricultural resources 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
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?
b)Conflict with existing zoning for agricultural use,or Q U
a Williamson Act contract?
c)Involve other changes in the existing environment Ll L) U
which,due to their location or nature,could result in
conversion of Farmland to non-agricultural use?
1
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Mitigation Impact
Incorporation
Conclusion: The proposed treepole and ground equipment will have no foreseeable impact on Sources: 8
Agricultural Resources.The site is not used for agriculture.
111.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 following determinations.Would the
project:
a)Conflict with or obstruct implementation of the 13 0 U
applicable air quality plan?
b)Violate any air quality standard or contribute [71
substantially to an existing or projected air quality U LJ 0
violation?
c)Result in a cumulatively considerable net increase of L3
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)?
d)Expose-sensitive receptors to substantial pollutant ❑ U LJ
concentrations?
e)Create objectionable odors affecting a substantial 0 L3 L3
number of peopie?
Conclusion:The proposed treepole,and ground equipment will have no foreseeable impact on Air Sources: 9
Quality.Maintenance of the facility requires one or two vehicle trips per month for regular maintenance.
Even construction phase vehicle trips will be well below thresholds of significance as described in the
BAAQMD CEQA Guidelines. No significant digging,grading or ground disruption is associated with the
proposal and all vehicles will be traveling on paved road surfaces.Conditions of project approval require
the applicant to water sweep roads daily if soil material is carried onto public streets.
IV.BIOLOGICAL RESOURCES--Would the project:
a)Have a substantial adverse effect,either directly or
F1 0 ❑
through habitat modifications, on any species identified
as a candidate,sensitive,or special status species in
local or regimal plans,policies, or regulations, or by the
California Department of Fish and Game or U.S.Fish
and Wildlife Service?
b)Have a substantial adverse effect on any riparian Ll
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?
c).Have a substantial adverse effect on federally El
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,or other means?
2
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Mitigation Impact
Incorporation
d)Interfere substantially with the movement of any
13
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
dtes*7
e.)Conflict with any local policies or ordinances
U U ❑
protecting biological resources,such as a tree
Dreservation-policy or ordinance?
f)Conflict with the provisions of an adopted Habitat E3
Conservation Plan,Natural Community Conservation
Plan,or other approved local,regional,or state habitat
conservation plan?
Conclusion:The proposed treepole and ground equipment has no foreseeable impact on Biological Sources: 1,10
Resources as defined above.The site(012 acre)is currently fenced and developed with a water facility
pump house,electrical installations, and access driveway.The proposal adds approximately 320 square
feet of new impervious surface and will not require significant excavation or grading. Considering the
property size and use it is not a substantial open space resource and the Town does permit wireless
facilities in the Open Space Reserve Zoning District(Little League Fields).
V.CULTURAL RESOURCES--Would the project-.
01
a)Cause a substantial adverse change in the
significance of a historical resource as defined in E3 E3 U
'15064.5?
b)Cause a substantial adverse change in the Ll L3 U 1-0
significance of an archaeological resource pursuant to
'15064.5?
c)Directly or indirectly destroy a unique paleontological
resource or site or unique geologic feature?
d)Disturb any human remains,including those interred
U L3 ❑
outside of formal cemeteries?
Conclusion:The proposed treepole and ground equipment will have no foreseeable impact on Cultural Sources: 3,5
Resources as defined in Title 14;Chapter 3;Article 5;Section 15064.5 of the California Environmental
Quality Act.No listed historical buildings are located in the vicinity(within 500')of the proposed site and
no known archeological resources exist on the subject 0.12 acre water district property.
VL GEOLOGY AND SOILS--Would the project:
a)Expose people or structures to potential substantial ❑ ❑ ❑ ro
adverse effects,including the risk of loss,injury,or
death involving:
3
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Mitigation Impact
Incorporation
i)Rupture of a known earthquake fault, as delineated on El
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.
ii)Strong seismic ground shaking? Q L3 0
iii)Seismic-related ground failure,including Q
liquefaction?
iv)Landslides? 0
b)Result in substantial soil erosion or the loss of
topsoil?
c)Be located on a geologic unit or soil that is unstable, 0 Ll 0
or that would become unstable as a result of the project,
and potentially result in on-or off-site landslide,lateral
spreading, subsidence,liquefaction or collapse?
d)Be located on expansive soil, as defined in Table 18-1 L3 0 0 Q
B of the Uniform Building Code(1994),creating
substantial risks to life or mover ?
e)Have soils incapable of adequately supporting the use 0
of septic tanks or alternative waste water disposal
systems where sewers are not available for the disposal
of waste water?
Conclusion: The proposed treepole and ground equipment will have no foreseeable impact on Geology Sources: 12
and Soils.The site is not located in a fault rupture,ground deformation or slope instability zone.
VII.HAZARDS AND HAZARDOUS MATERIALS Would the project:
a)Create a significant hazard to the public or the L. L] 0 R1
environment through the routine transport,use, or
dis osal of hazardous materials?
b)Create a significant hazard to the public or the 0 0 Q
environment through reasonably foreseeable upset and
accident conditions involving the release of hazardous
materials into the environment?
c)Emit hazardous emissions or handle hazardous or
acutely hazardous materials,substances,or waste within
one-quarter mile of an existing or proposed school?
4
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Mitigation Impact
Incorporation
d)Be located on a site which is included on a list of 13
hazardous materials sites compiled pursuant to
Govemment Code Section 65962.5 and, as a result,
would it create a significant hazard to the public or the
environment?
e)For a project located within an airport land use plan LJ
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 nroiect areO
f)For a project within the vicinity of a private airstrip, LJ ❑ ❑ Z
would the project result in a safety hazard for people
residing or working in the proiect area?
g)Impair implementation of or physically interfere with ❑ 13
❑
an adopted emergency response plan or emergency
evacuation Dlan?
h)Expose people or structures to a significant risk of ❑ ❑ ❑
loss,injury or death involving wildland fires,including
where wildlands are adjacent to urbanized areas or
where residences are intermixed with wildlands?
Conclusion:The proposed treepole and ground equipment does not produce a hazard or hazardous waste 'Sources: 13
and will have no foreseeable impact related to Hazards and Hazardous Materials.The site is not located in
an identified location per CA Government Code 65962.5.
VIII.HYDROLOGY AND WATER QUALITY--Would the project:
a)Violate any water quality standards or waste ❑ ❑
❑
discharge requirements?
b)Substantially deplete groundwater supplies or
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)?
c)Substantially alter the existing drainage pattern of the ❑ ❑ ❑ 10
site or area,including through the alteration of the
course of a stream or river,in a manner which would
result in substantial erosion or siltation on-or off-site?
—J
5
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Mitigation Impact
Incorporation
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?
e)Create or contribute runoff water which would exceed ❑ ❑ ❑
the capacity of existing or planned stormwater drainage
systems or provide substantial additional sources of
nolluted runoff?
f)Otherwise substantially degrade water quality?• ❑ ❑ ❑
g)Place housing within a 100-year flood hazard area as
mapped on a federal Flood Hazard Boundary or Flood
Insurance Rate Map or other flood hazard delineation
maD?
h)Place within a 100-year flood hazard area structures ❑ ❑ ❑
which would impede or redirect flood flows?
i)Expose people or structures to a significant risk of
loss,injury or death involving flooding,including
flooding as a result of the failure of a levee or dam?
j)Inundation by seiche,tsunami,or mudflow?
L3 13 ❑
Conclusion:The proposed treepole and ground equipment will have no foreseeable impact on Hydrology Sources: 5,11
and Water Quality as defined above.The applicant is required to work under a permit from the Santa
Clara Valley Water District because Deer Creek runs through the site,however,Deer Creek has been
altered with previous projects and no longer supports a riparian habitat on the site. The creek is directed
through a concrete culvert under Arastradero Road and through the site.
IX.LAND USE AND PLANNING-Would the project:
a)Physically divide an established community?
13 ❑ ❑
b)Conflict with any applicable land use plan,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
Tnitigntimy gn envirnnmental effect7
c)Conflict with any applicable habitat conservation ❑ ❑
❑
plan or natural community conservation plan?
6
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Mitigation Impact
Incorporation
Conclusion:The proposed treepole and ground equipment will not physically divide a community. The Sources:
nearest residential building is over 400 feet from the project site.The project complies with the Los Altos 4,5,6
Fffls General Plan,Zoning Code, and Wireless Communication Policy.The project is not located in an
area denoted as Open Space Conservation Area on the General Plan Map.
X.MI NERAL RESOURCES--Would the project:
a)Result in the loss of availability of a known mineral 0
resource that would be of value to the region and the
residents of the state?
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?
Conclusion:The proposed treepole and ground equipment will not result in a loss of mineral resources. Sources:
The project is not located in an area known for valued minerals. 1,2,5
XL NOISE Would the project result in:
a)Exposure of persons to or generation of noise levels L3 D
❑
in excess of standards established in the local general
plan or noise ordinance,or applicable standards of other
aLrencies?
b)Exposure of persons to or generation of excessive0
groundborne vibration or F—roundborne noise levels? D Q ❑ L--1
c)A substantial permanent increase in ambient noise L) Q
❑
levels in the project vicinity above levels existing
without the Droiect?
d)A substantial temporary or periodic increase in 13 Ll
❑
ambient noise levels in the project vicinity above levels
existing without the project?
e)For a project located within an airport land use plan D
or,where such a plan has not been adopted,within two
miles of a public airport or public use airport,would the
project expose people residing or working in the project
area to excessive noise levels?
f)For a project within the vicinity of a private airstrip, ❑
Q ❑
would the project expose people residing or working in
the project area to excessive noise levels?
Conclusion:The proposed treepole and ground equipment do not produce any noise under normal Sources: 6
operation conditions.The project does not include a backup generator.Temporary construction noise is
regulated by the Town's Municipal Code Section 5-7.02.No construction activity shall take place before
gam or 5:30pm Monday-Saturday.No work on Sunday or Public Holidays.
IXII.POPULATION AND HOUSING--Would the projecL-
7
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Mitigation Impact
Incorporation
a)Induce substantial population growth in an area, ❑ ❑ ❑ t�f
either directly(for example,by proposing new homes L!
and businesses)or indirectly(for example, through
extension of roads or other infrastructure)?
b)Displace substantial numbers of existing housing, ❑ ❑ ❑ of
necessitating the construction of replacement housing 3J
elsewhere?
c)Displace substantial numbers of people,necessitating ❑ ❑ ❑ t 7f
the construction of replacement housing elsewhere?
Conclusion:The proposed treepole and ground equipment will not have a foreseeable impact on Sources: 2,3
p elation or housing.
XIII.PUBLIC SERVICES
a)Would the project result in substantial adverse ❑ ❑ ❑ �(
physical impacts associated with the provision of new or U
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:
Fire protection? ❑ ❑ ❑ z
Police protection? ❑ ❑ ❑ z
Schools? ❑ ❑ ❑
Parks? ❑ ❑ ❑
Other public facilities? ❑ ❑ ❑ Q
Conclusion:The proposed treepole and ground equipment will not have a foreseeable impact on any Sources:
public service or facility.The proposal is co-located on a site utilized by the Purissima Hills Water 1,2,3
District and no impact to service is anticipated.
XIV.RECREATION--Would the project:
a)Would the project increase the use of existing ❑ ❑ ❑
neighborhood and regional parks or other recreational
facilities such that substantial physical deterioration of
the facility would occur or be accelerated?
8
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Nfifigation Impact
Incorporation
b)Does the project include recreational facilities or
U
require the construction or expansion of recreational
facilities which might have an adverse physical effect on
the environment?
Conclusion:The proposed treepole and ground equipment will not have a foreseeable impact on Sources:
recreation facilities.No recreation facilities are located on the site. 1,2,3
XV.TRANSPORTATION/TRA"IC--Would the project:-
a)Cause an increase in traffic which is substantial in Lj 0 L3 2
relation to the existing traffic load and capacity of the
street system(i.e.,result in a substantial increase in
either the number of vehicle trips,the volume to
capacity ratio on roads,or congestion at intersections)?
b)Exceed,either individually or cumulatively, a level of 0 0 U
service standard established by the county congestion
management agency for designated roads or highways?
c)Result in a change in air traffic patterns,including 0 L3
either an increase in traffic levels or a change in
location that results in substantial safety risks?
d)Substantially increase hazards due to a design feature U U
(e.g., sharp curves or dangerous intersections)or
incompatible uses(e.g.,farm equipment)? ,
e)Result in inadequate emergency access? U L3 0Z
f)Result in inadequate parking capacity? Lj 0 L) 0
g)Conflict with adopted policies,plans, or programs Q L3 Q 10
supporting alternative transportation(e.g.,bus turnouts,
bicycle racks)?
Conclusion:The maintenance and service of the proposed installations requires one or two vehicle trips Sources:
per month.These trips would typically be during normal work hours.Purissima Road and Arastradero 1,2,3,5
Road can accommodate these additional vehicle trips.Temporary construction of the proposed tree pole
and ground equipment will require approximately one to three vehicle trips per day.Arastradero Road
and Purissima.Road can carry this temporary, additional traffic without a reduction in level of service.
XVI.UTILITIES AND SERVICE SYSTEMS Would the project:
a)Exceed wastewater treatment requirements of the 13 El U.1
applicable Regional Water Quality Control Board?
9
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Mitigation Impact
Incorporation
b)Require or result in the construction of new water or Q Q U
wastewater treatment facilities or expansion of existing
facilities,the construction of which could cause
significant environmental effects?
c)Require or result in the construction of new storm LJ L] Q 0
water drainage facilities or expansion of existing
facilities,the construction of which could cause
significant environmental effects?
d)Have sufficient Water supplies available to serve the Ll Ll Q z
project from existing entitlements and resources, or are
new or expanded entitlements needed?
e)Result in a determination by the wastewater treatment ❑
Q LJ R1
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'?
f)Be served by a landfill with sufficient permitted
capacity to accommodate the project's solid waste LJ
disposal needs?
9)Comply with federal,state, and local statutes and ❑
0 L)
regulations related to solid waste? LJ
Conclusion:The proposed project does not-require tie in to any established water or waste water system Sources:
and no additional impacts are foreseeable with the proposed installation.Drainage will follow the existing 1,2,3,17
pattern onsite.
XVII.MANDATORY FINDINGS OF SIGNIFICANCE
a)Does the project have the potential to degrade the ❑ ❑ Ll R1
quality of the environment, substantially reduce the
habitat of a fish or wildlife species,cause a fish or
Wildlife population to drop below self-sustaining levels,
threaten to eliminate a plant or animal community,
reduce the number or restrict the range of aTare Or
endangered plant or animal or eliminate important
examples of the major periods of California history or
prehistory?
b)Does the project have impacts that are individually ❑ FJ
limited,but cumulatively considerable?("Cumulatively LJ
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 probable future
Projects)?
10
Potentially Less Than Less Than No Impact
Significant Significant with Significant
Impact Mitigation Impact
Incorporation
c}Does the project have environmental effects which `.,
will cause substantial adverse effects on human beings,
either directly or indirectly?
Conclusion:The proposed project, as mitigated,will not result in a negative impact to the environment, Sources: 170
wildlife,plant or historical resource.The project does not have any foreseeable cumulative impacts and
human exposure standards for radio frequency will comply with FCC standards.
11
Source List:
1.Field Inspection
2.Project Plans
3.Planner's Knowledge of the Area
4.Los Altos Hills Land Use and Zoning Map
5.Los Altos Hills General Plan
6.Los Altos Hills Municipal Code
7.Assessor's Maps,Office of County Assessor,Santa Clara County,2004-2005
8.State Department of Conservation,Farmland Mapping and Monitoring Program
9.BAAQMD CEQA Guidelines: Assessing the Air Quality Impacts of Projects and Plans,December 1999
10.State Department Fish and Games Natural Diversity Database Map
11.Santa Clara Valley Water District Map
12.Geotechnical and Seismic Hazard Zones Map of Los Altos Hills,Cotton Shires and Associates,Dec-2004
13.DTSC Hazardous Waste and Substance Sites List,California Environmental Protection Agency
14.ALUC Land Use Plan for Areas Surrounding Airports,Santa Clara County
15.Federal Emergency Management Agency,Flood Insurance Rate Map,Los Altos Hills,January 2, 1980
16.Wireless Communications Policy
17.Sanitary Sewer Map,Town of Los Altos Hills Engineering Department
18.RF Report for Cingular Wireless Site No.SF-2365,Hammett and Edison,Inc.,November 1,2005
19.CEQA Guidelines,2005
20.Google Earth
Exhibit List:
1.Photos of the site and surrounding areas
2.Aerial photo of the site and surrounding areas
3.Project plans
4.Photo simulations
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County of Santa Clara °UNTO
Office of the County Clerk-Recorder
Business Division
County Government Center
STA CVP
70 West Hedding Street, E.Wing, 1St Floor
San Jose,California 95110 (408)299-5665
ENVIRONMENTAL DECLARATION
II' For CLERK-RECORDER'S USE ONLY
�) FOR CLER�.,l \D LUT�
POSTED ON N 1 I THROUGH JAN 3ED
IN THE OFFICE OF THE COUNTY CLERK-RECORDER
BRENDA DAVIS, COUNTY CLERK JAN, 1 1 2OO6
BY DEPUTY
BRENDA DAVIS,County Clark-Recorder
" Santa Clara County
13y _DeWl�
NAME OF LEAD AGENCY: 0,f os 5
NAME OF APPLICANT: CLERK-RECORDER FILE NO.
CLASSIFICATION OF ENVIRONMENTAL DOCUMENT:
1. ( ) NOTICE OF PREPARATION CA Dept. of Fish and Game Receipt#
2. ( ) NOTICE OF EXEMPTION
3. NOTICE OF DETERMINATION
NEGATIVE DECLARATION PURSUANT TO PUBLIC RESOURCES CODE § 21080(C)
1300.00 REQUIRED ($1250.00 STATE FILING FEE AND $50.00 COUNTY CLERK FEE)
( ) IF CERTIFICATE OF EXEMPTION AND/OR DE MINIMUS IMPACT FINDING STATEMENT
ATTACHED -$50.00 COUNTY CLERK FEE REQUIRED
4. NOTICE
OF DETERMINATION
ENVIRONMENTAL IMPACT REPORT PURSUANT TO PUBLIC RESOURCES CODE § 21152
( ) 900.00 REQUIRED ($850.00 STATE FILING FEE AND $50.00 COUNTY CLERK FEE)
( ) IF CERTIFICATE OF EXEMPTION AND/OR DE MINIMUS IMPACT FINDING STATEMENT
ATTACHED - $50.00 COUNTY CLERK FEE REQUIRED
5. Other: Vo4ce, DS-1;'L4e,� �o e ,¢rive-
NOTICE TO BE POSTED FOR 2 DAYS.
THIS FORM MUST BE COMPLETED AND ATTACHED TO THE FRONT OF ALL ENVIRONMENTAL
DOCUMENTS LISTED ABOVE (INCLUDING COPIES) SUBMITTED FOR FILING.
CHECKS SHOULD BE MADE PAYABLE TO : COUNTY CLERK-RECORDER.
Board of Supervisors: Donald F.Gage,Blanca Alvarado,Pete McHugh, James T.Beall,Jr.,Liz Kniss
County Executive: Peter Kutras,Jr.
03-09-2004
NOTICE OF INTENT TO ADOPT A NEGATIVE DECLARATION
TO: Interested Individuals From: Town of Los Altos Hills
County Clerk of Santa Clara Planning Department
26379 Fremont Road
Los Altos Hills., CA 94022
Subject: Notice of Intent to adopt a Mitigated Negative Declaration.
Project Title: Cingular Wireless Communications Facility
Project Planner: Brian Froelich,Assistant Planner
Project Description: Cingular Wireless requests a Site Development Permit,Conditional
Use.Permit and a Setback Variance to allow an unmanned wireless
communications facility consisting of three(3)paired antennas
mounted to an 87' tall treepole and associated ground equipment
located in the required setback.
Project Location: Arastradero Road,Los Altos Hills,CA 94022
APN#142-16-077
Northwest of the Arastradero Road and Purissima Road intersection
and east of Interstate 280 at the Purissima Hills Water District Pump
Station.
In accordance with Section 15072(a),notice is hereby given of the Town's intent to adopt a mitigated
Negative Declaration for the project listed above. The Town of Los Altos Hills has completed a
review of the proposed project, and on the basis of an Initial Study, has determined that the project
will not have a significant effect upon the environment. The Town has prepared a Mitigated Negative
Declaration and Initial Study that are available for public review at Town Hall,26379 Fremont Road,
Los Altos Hills California,94022.
As mandated by State Law, the minimum comment period for this document is 20 (twenty) days
and begins on January 11, 2006 and ends on January 31, 2006 at 5:00 p.m. Persons having
comments concerning this project, including objections to the basis of determination set forth in
the Initial Study/Negative Declaration, are invited to furnish their comments summarizing the
specific and factual basis for their comments, in writing to: Town of Los Altos Hills Planning
Department. Testimony at future public hearings may be limited to those issues submitted in
writing by 5:00 PM the day the comment period closes. Pursuant to Public Resources Code
section 21177, any legal challenge to the adoption of the proposed Initial Study/Negative
Declaration will be limited to those issues presented to the Town during,the public comment
period described above.
PUBLIC HEARING: The Planning Commission will review the proposed Negative Declaration
and Initial Study for this project at its regular meeting on January 19, 2006 at 7:00 Dm. The City
Council will review and adopt the proposed Negative Declaration and Initial Study for this
project at its regular meeting on February 9, 2005 at 6:30 pm in the in the Council Chambers of
Town Hall,25892 Fremont Road,Los Altos Hills,California.
The project area is not on any of the lists enumerated under Section 65962.5 of the Government
Code including,but not limited to lists of hazardous waste facilities, land designated as hazardous
waste property, and hazardous waste disposal sites, and the information included in the
Hazardous Waste and Substances Statement required under subsection(f)of that section.
Carl Cahill,Planning Director Phone:(650)941-7222 xt. 224
Email: ccahill@losaltoshills.ca.gov Fax: (650)941-3160
ATTACHMENT 6
TOWN OF LOS ALTOS HILLS
Policy Re: Wireless Communications Facilities
Code Sections and Design Guidelines:
Section 10-1.703(h)(2) of the Zoning Ordinance allows service uses, including
"communications facilities", to be permitted in the Town if a Conditional Use Permit is
granted by the Planning Commission and City Council. Section 10-1.1107(1) of the
Code outlines findings which must be made to approve a use permit, including the proper
location of the use or facility relative to others in the vicinity, the adequacy of the site to
accommodate the.use, and that the facility or use will not have an adverse effect on
adjacent properties. The Design Guidelines do not address such uses, but do suggest (on
pages 29-31) that ancillary facilities, such as lights, pool equipment, and satellite dishes,
be located so as to minimize impacts on neighbors.
Intent:
The purpose of this policy is to outline the desired criteria for siting of wireless
communications facilities, generally including monopoles, related antennas, and
equipment shelters. As the Town's land use is virtually entirely residential, wireless
communication facilities will be most appropriately located on public or institutional sites
existing within the Town. Collocation, location on or near existing buildings, and
landscape screening will be desired to minimize the visual impacts of the facilities on
neighbors and the public.
_ _ Policies:
1. Priorities for Siting. Wireless communication facilities shall generally be
located on properties with priority as follows: a) Town-owned properties; b)
Foothill College; c) water tanks; d) other public or quasi-public facilities,
such as schools or churches; and e) residential properties of at least ten (10)
acres.
2. Siting on Residential Parcels. Wireless communication facilities may be
permitted on properties used for residential purposes or vacant parcels
intended for residential use if the residential property owner provides
written consent and significant visual impacts are mitigated.
3. Collocation. Collocation of wireless communication facilities with other
facilities is encouraged to the maximum extent feasible, as long as the
collocation is technologically compatible and does not substantially increase
visual impacts. The Town will generally require as a condition of approval
for any conditional use permit that the applicant permit collocation of other
facilities, subject to technological constraints and Town review.
i
Policy Re: Wireless Communications Facilities
page.2
4. Landscape Screening and Color. Landscape screening shall be required by
the Town to minimize the visual impacts of wireless communication facilities.
Poles, antennas, and equipment buildings should be painted to blend with the
surrounding environment and/or buildings to. further minimize visual
impacts. ;
5. Environmental Review. A Negative Declaration will, typically be prepared
for review of proposed wireless .communication facilities, with special
attention to the visual impacts of the facilities. Categorical exemptions may
be used where facilities are collocated with or would be minimal additions to
existing structures, with negligible additional visual impact.
6. Antenna Master Plans. Any applicant for a wireless communication facility
site shall submit applications, to the best of their knowledge, for all sites
anticipated to be required by the carrier for a three (3) to five (5) year
period, and the requests shall be reviewed by the Planning Commission and
City Council as a master plan application.
7. Term of Permits and Abandonment of Sites. Conditional use permits for
wireless communication facilities shall 'be established for periods not to
exceed five (5) years, at which time renewal of the permit must be requested
by the applicant. More frequent review of the operation of the permit may
be made a condition of approval. Approval will also .require a written
agreement from the applicant that, should the use be discontinued by the
carrier, all facilities will be removed not later than ninety (90) days after
discontinuance of the use or abandonment. Such a provision shall also be
included in any lease with the Town for use of Town lands for wireless
communications facilities. The Town may require bonding or other surety
to assure the removal of such facilities.
8. Wireless communication firms shall, at the time of application for permits,
demonstrate efforts which have been made to inform neighboring residents
of the proposed facilities, such as conducting meetings, or mailing fact sheets
and/or letters, etc. to neighbors.
9. The Planning Director is authorized to reduce or waive permit fees for any
wireless communications facility that is proven to expand wireless coverage
in the Town and is structurally capable of co-location.
10. The Planning Director is authorized to administratively approve portable
wireless communications facilities also known as cell on wheels or COWs on
certain properties as specified in Policy#1 on a temporary basis.
Approved by City Council: August 21, 1996, amended September 15, 2005
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ATTACHMENTO
Cingular Wireless - Proposed Base Station (Site No. PN-617-02) �t3eF
Purissima Road and Arastradero Road - Los Altos Hills, California1_,
Statement of Hammett & Edison, Inc., Consulting Engineers -
The firm of Hammett & Edison, Inc., Consulting Engineers, has been retained on behalf of Cingular
Wireless, a personal wireless telecommunications carrier, to evaluate the base station (Site No.
PN-617-02) proposed to be located at Purissima Road and Arastradero Road in Los Altos Hills,
California, for compliance with appropriate guidelines limiting human exposure to radio frequency
("RF")electromagnetic fields.
Prevailing Exposure Standards
The U.S. Congress requires that the Federal Communications Commission ("FCC") evaluate its
actions for possible significant impact on the environment. In Docket 93-62, effective October 15,
1997, the FCC adopted the human exposure limits for field strength and power density recommended
in Report No. 86, "Biological Effects and Exposure Criteria for Radiofrequency Electromagnetic
Fields," published in 1986 by the Congressionally chartered National Council on Radiation Protection
and Measurements ("NCRP"). Separate limits apply for occupational and public exposure conditions,
with the latter limits generally five times more restrictive. The more recent Institute of Electrical and
Electronics Engineers ("IEEE") Standard C95.1-1999, "Safety Levels with Respect to Human
Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz," includes nearly identical
exposure limits. A summary of the FCC's exposure limits is shown in Figure 1. These limits apply
for continuous exposures and are intended to provide a prudent margin of safety for all persons,
regardless of age, gender, size, or health.
The most restrictive limit for exposures of unlimited duration to radio frequency energy for several
personal wireless services are as follows:
Personal Wireless Service Approx.Frequency Occupational Limit Public Limit
Personal Communication ("PCS") 1,950 MHz 5.00 mW/cm2 1.00 mW/cm2
Cellular Telephone 870 2.90 0.58
Specialized Mobile Radio 855 2.85 0.57
[most restrictive frequency range] 30-300 1.00 0.20
General Facility Requirements
Base stations typically consist of two distinct parts: the electronic transceivers (also called "radios" or
"cabinets") that are connected to the traditional wired telephone lines, and the passive antennas that
send the wireless signals created by the radios out to be received by individual subscriber units. The
transceivers are often located at ground level and are connected to the antennas by coaxial cables
about 1 inch thick. Because of the short wavelength of the frequencies assigned by the FCC for
wireless services,the antennas require line-of-sight paths for their signals to propagate well and so are
BEHAMMETT&EDISON,INC.
CONSULTING ENGINE CGPN61702596
SAN FRANQSCO Pagel of 3
Cingular Wireless - Proposed Base Station (Site No. PN-617-02)
Purissima Road and Arastradero Road - Los Altos Hills, California
installed at some height above ground. The antennas are designed to concentrate their energy toward
the horizon, with very little energy wasted toward the sky or the ground. Along with the low power of
such facilities, this means that it is generally not possible for exposure conditions to approach the
maximum permissible exposure limits without being physically very near the antennas.
Computer Modeling Method
The FCC provides direction for determining compliance in its Office of Engineering and Technology
Bulletin No. 65, "Evaluating Compliance with FCC-Specified Guidelines for Human Exposure to
Radio.Frequency Radiation," dated August 1997. Figure 2 attached describes the calculation
methodologies, reflecting the facts that a directional antenna's radiation pattern is not fully formed at
locations very close by (the "near-field" effect) and that the power level from an energy source
decreases with the square of the distance from it (the "inverse square law"). The conservative nature
of this method for evaluating exposure conditions has been verified by numerous field tests.
Site and Facility Description
Based upon information provided by Cingular, including zoning drawings by CRDC Engineers, dated
July 29, 2005, it is proposed to mount six Andrew Model TBXLHB-6565A-VTM directional dualband
antennas on a new 87-foot steel pole to be located northwest of the intersection of Purissima Road and
Arastradero Road in Los Altos Hills. The antennas would be mounted with up to 7° downtilt at an
effective height of about 85 feet above ground and would be oriented in pairs toward 40°T, 190°T, and
290°T. The maximum effective radiated power in any direction would be 1,140 watts, representing
simultaneous operation at 705 watts for PCS and 435 watts for cellular service. There are reported no
other wireless telecommunications base stations installed nearby.
Study Results
For a person anywhere at ground, the maximum ambient RF exposure level due to the proposed
Cingular operation is calculated to be 0.0024 mW/cm2, which is 0.34% of the applicable public limit.
The maximum calculated level at the second floor elevation of any nearby building` is 0.49% of the
public exposure limit. It should be noted that these results include several "worst-case" assumptions
and therefore are expected to overstate actual power density levels.
No Recommended Mitigation Measures
Since they are to be mounted on a tall pole, the Cingular antennas are not accessible to the general
public, and so no mitigation measures are necessary to comply with the FCC public exposure
Located at least 45 feet away,based on the drawings.
HAMMETT&EDISON,INC.
RM. WA
CONSULTING ENGINEERS CGPN61702596
All SAN FRANCISCO Page 2 of 3
Cingular Wireless - Proposed Base Station (Site No. PN-617-02)
Purissima Road and Arastradero Road - Los Altos Hills, California
guidelines. It is presumed that Cingular will, as an FCC licensee,take adequate steps to ensure that its
employees or contractors comply with FCC occupational exposure guidelines whenever work is
required near the antennas themselves.
Conclusion
Based on the information and analysis above, it is the undersigned's professional opinion that the base
station proposed by Cingular Wireless at Purissima Road and Arastradero Road in Los Altos Hills,
California, will comply with the prevailing standards for limiting public exposure to radio frequency
energy and, therefore, will not for this reason cause a significant impact on the environment. The
highest calculated level in publicly accessible areas is much less than the prevailing standards allow
for exposures of unlimited duration. This finding is consistent with measurements of actual exposure
conditions taken at other operating base stations.
Authorship
The undersigned author of this statement is a qualified Professional Engineer, holding California
Registration Nos. E-13026 and M-20676, which expire on June 30, 2007. This work has been carried
out by him or under his direction, and all statements are true and correct of his own knowledge except,
where noted,when data has been supplied by others,which data he believes to be correct.
QRIE��
p
M-20876 William F.Hamm t, P.E.
August 16, 2005 '
HAmmm&EDISON,INC.
eoNsrn.•rING aNGWEERs CGPN61702596
8N1511%,E SAN Owasco Page 3 of 3
FCC Radio Frequency Protection Guide
The U.S. Congress required (1996 Telecom Act) the Federal Communications Commission ("FCC")
to adopt a nationwide human exposure standard to ensure that its licensees do not, cumulatively, have
a significant impact on the environment. The FCC adopted the limits from Report No. 86, `Biological
Effects and Exposure Criteria for Radiofrequency Electromagnetic Fields," published in 1986 by the
Congressionally chartered National Council on Radiation Protection and Measurements, which are
nearly identical to the more recent Institute of Electrical and Electronics Engineers Standard
C95.1-1999, "Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic
Fields, 3 kHz to 300 GHz." These, limits apply for continuous exposures from all sources and are
intended to provide a prudent margin of safety for all persons, regardless of age, gender, size, or
health.
As shown in the table and chart below, separate limits.apply for occupational and public exposure
conditions,with the latter limits (in italics and/or dashed)up to five times more restrictive:
Frequency Electromagnetic Fields (f is frequency of emission in MHz)
Applicable Electric Magnetic Equivalent Far-Field
-Range Field Strength Field Strength Power Density
(MHz) (V/m) (A/m) (mW/cm2)
0.3— 1.34 614 614 1.63 1.63 100 100
1.34— 3.0 614 823.81f 1.63 2.191f 100 1801/
3.0— 30 1842/f 823.81f 4.89/f 2.191f 900/f, 1801/
30— 300 61.4 27.5 0.163 0.0729 1.0 0.2
300— 1,500 3.54f 1.594f Tf/106 ff/238 f/300 f11500
1,500— 100,000 137 61.4 0.364 0.163 5.0 1.0
1000 � Occupational Exposure
100 PCS
'No 10 �� Cell
c FM
f v �
0.1 /
Public Exposure
0.1 1 10 100 103 104 105
Frequency(MHz)
Higher levels are allowed for short periods of time, such that total exposure levels averaged over six or
thirty minutes, for occupational or public settings, respectively, do not exceed the limits, and higher
levels also are allowed for exposures to small areas, such that the spatially averaged levels do not
exceed the limits. However,neither of these allowances is incorporated in the conservative calculation
formulas in the FCC Office of Engineering and Technology Bulletin No. 65 (August 1997) for
projecting field levels. Hammett & Edison has built those formulas into a proprietary program that
calculates, at each location on an arbitrary rectangular grid, the total expected power density from any
number of individual radio sources. The program allows for the description of buildings and uneven
terrain,if required to obtain more accurate projections.
HAMMETT&EDISON,INC.
CONSULTING ENGWEERS FCC Guidelines
ME = SAN FRANCISCO Figure 1
RFR.CALC TM Calculation Methodology
Assessment by Calculation of Compliance with FCC Exposure Guidelines
The U.S.Congress required (1996 Telecom Act)the Federal Communications Commission ("FCC") to
adopt a nationwide human exposure standard to ensure that its licensees do not, cumulatively, have a
significant impact on the environment. The maximum permissible exposure limits adopted by the FCC
(see Figure 1) apply for continuous exposures from all sources and are intended to provide a prudent
margin of safety for all persons,regardless of age, gender, size, or health. Higher levels are allowed for
short periods of time, such that total exposure levels averaged over six or thirty minutes, for -
occupational or public settings, respectively, do not exceed the limits.
Near Field.
Prediction methods have been developed for the near field zone of panel (directional) and whip
(omnidirectional) antennas, typical at wireless telecommunications cell sites. The near field zone is
defined by the distance, D, from an antenna beyond which the manufacturer's published, far field
antenna patterns will be fully formed;the near field may exist for increasing D until some or all of three
conditions have been met:
2
1) D> 7 2) D> 5h 3) D> 1.6%
where h = aperture height of the antenna, in meters, and
% = wavelength of the transmitted signal, in meters.
The FCC Office of Engineering and Technology Bulletin No. 65 (August 1997) gives this formula for
calculating power density in the near field zone about an individual RF source:
power density S =
180 x n x D xn h ' in mW/cm2,
where @Bw = half-power beamwidth of antenna, in degrees, and
Pnet = net power input to the antenna, in watts.
The factor of 0.1 in the numerator converts to the desired units of power density. This formula has
been built into a proprietary program that calculates distances to FCC public and occupational limits.
Far Field.
OET 65 gives this formula for calculating power density in the far field of an individual RF source:
power density S =
2.56 x 1.64 x 100 x RFF2 x ERP in mW/ cm2,
,
4x7cxD2
where ERP = total ERP (all polarizations), in kilowatts,
RFF = relative field factor at the direction to the actual point of calculation, and
D = distance from the center of radiation to the point of calculation, in meters.
The factor of 2.56 accounts for the increase in power density due to ground reflection, assuming a
reflection coefficient of 1.6 (1.6 x 1.6 = 2.56). The factor of 1.64 is the gain of a half-wave dipole
relative to an isotropic radiator. The factor of 100 in the numerator converts to the desired units of
power density. This formula has been built into a proprietary program that calculates, at each location
on an arbitrary rectangular grid, the total expected power density from any number of individual
radiation sources. The program also allows for the description of uneven terrain in the vicinity, to
obtain more accurate projections.
IREHAmmETT&EDISON,INC.
CONSULTING ENGINEERS Methodology
SANK NC1500 Figure 2
ATTACHMENT
TOWN OF LOS ALTOS HILLS
NOTICE OF PLANNING COMMISSION
PUBLIC HEARING
NOTICE IS HEREBY GIVEN that the City Clerk of the Town of Los Altos Hills, State
of California, has set after the hour of 7:00 p.m. on THURSDAY, JANUARY 19, 2006
in the Council Chambers of Town Hall, 26379 Fremont Road, Los Altos Hills,
California as the time and place for a Public Hearing on the application of:
LANDS OF PURISSIMA HILLS WATER DISTRICT (CINGULAR
WIRELESS), APN#142-16-077 (216-05-CUP-VAR); Cingular Wireless
requests a Site Development Permit, Conditional Use Permit and a Setback
Variance to allow an unmanned wireless communications facility consisting
of three (3) paired antennas mounted to an 87' tall treepole and associated
ground equipment located in the required setback. CEQA Status: Mitigated
Negative Declaration (staff-Brian Froelich).
PLEASE NOTE:The project site is northwest of the Arastradero Road and Purissima Road
intersection and east of Interstate 280 at the Purissima Hills Water District Pump Station
(no address).
The file for the application is at the Office of the City Clerk at the Los Altos Hills Town
Hall, 26379 Fremont Road, Los Altos Hills, California and may be reviewed at that
location upon request.
All interested persons may appear and be heard at said time and place. Written
communications should be filed prior to the date of Hearing. If you challenge the action
of the Site Development Hearing, Planning Commission, or City Council in court, you
may be limited to raising only those issues you or someone else raised at the public
hearing described in this notice, or in written correspondence delivered to the Town at, or
prior to, the public hearing. Further details may be obtained from the Planning
Department at (650) 941-7222.
Carl Cahill
Planning Director
Dated: January 6, 2006
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