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HomeMy WebLinkAbout3.2Item 3.2 TOWN OF LOS ALTOS HILLS March 3, 2011 Staff Report to the Planning Commission SUBJECT: A SITE DEVELOPMENT PERMIT AND CONDITIONAL USE PERMIT FOR A NEW WIRELESS COMMUNICATIONS FACILITY; LANDS OF LOS ALTOS HILLS- (APPLICANT: T -MOBILE WIRELESS); WITHIN THE PUBLIC RIGHT OF WAY IN FRONT OF 12400 STONEBROOK DRIVE; FILE #248 -10 -CUP FROM: Nicole Horvitz, Assistant Planner/W-- APPROVED: Debbie Pedro, AICP, Planning Director <-pp RECOMMENDATION: That the Planning Commission: Forward a recommendation that the City Council adopt the Initial Study and Mitigated Negative Declaration in Attachment 3 and approve the requested Site Development Permit and Conditional Use Permit subject to the conditions of approval and findings of approval in Attachments 1 and 2. BACKGROUND On November 5, 2010, T -Mobile Wireless submitted an application to construct a new wireless communications facility on an existing PG&E telephone pole within the public road right of way, in front of 12400 Stonebrook Drive. Surrounding uses include single family residences to the west, south, east, and Foothill College to the north, across El Monte Road. CODE REQUIREMENTS Wireless communications facilities are regulated under Sections 10-1.703 (h) (2) and 10-1.1007 (1) of the Los Altos Hills Municipal Code. The project was reviewed for compliance with the requirements in the Wireless Communications Facilities Policy including: siting, collocation, screening, and color to ensure that the facility blends with the surrounding area. The Municipal Code also requires that all Conditional Use Permits must be reviewed by the Planning Commission and City Council. DISCUSSION The applicant is proposing to increase the height of the telephone pole from 32' to 43'. Three (3) flush mounted panel antennas are proposed at 38' from grade and to be enclosed by a 16" diameter radome (antenna sleeve). The associated equipment cabinets are proposed on the telephone pole starting at 7' from grade. Staff Report to the Planning Commission Lands of Los Altos Hills March 3, 2011 Page 2 of 7 The antennas, equipment cabinet, radome, and pole extension will be painted brown to match the existing telephone pole. A radio frequency (RF) analysis for the project was submitted by Hammett & Edison, Inc., consulting engineers, dated - October 4, 2010. The report concludes that the proposed wireless service will 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 population is expected (Attachment 4). PUBLIC COMMENTS On November 29, 2010, the applicant sent a letter to the neighbors within a 500' radius of the proposed project, introducing the project and welcoming any interested persons to contact them directly (Attachment 5). To date, staff has not received any correspondence from the public regarding the proposal. CONCLUSION The proposed facility will be in compliance with the Wireless Communications Facilities Policy because it is a non-residential site and visual impacts will be mitigated by painting the antennas, equipment cabinets, radome, and pole extension brown to match the existing pole. The applicant has submitted a report demonstrating that the proposed facility will operate within federal RF emissions standards and guidelines. ENVIRONMENTAL REVIEW In compliance with the California Environmental Quality Act (CEQA), an Initial Study and Mitigated Negative Declaration have been prepared for the proposed wireless communications facility. The review period for the Negative Declaration will end on March 14, 2011. Based on the analysis contained in the Initial Study, potential aesthetic impacts will be reduced to a less than significant level with mitigation. Recommended mitigation measures include the painting of the antennas, equipment cabinets, radome, and pole extension brown to match the existing telephone pole. ATTACHMENTS 1. Recommended Conditions of Approval 2.. Recommend Findings of Approval 3. Initial Study, Mitigated Negative Declaration 4. Radio Frequency emissions report by Hammett & Edison, Inc. October 4, 2010 5. Applicant's statement requesting to construct a new wireless communication facility dated October 25, 2010 Staff Report to the Planning Commission Lands of Los Altos Hills March 3, 2011 Page 3 of 7 6. Photo Simulations 7. Letter sent to the Neighbors by the Applicant dated November 29, 2010 8. Wireless Communications Facilities Policy 9. Site Development Plans Staff Report to the Planning Commission Lands of Los Altos Hills March 3, 2011 Page 4 of 7 ATTACHMENT 1 RECOMMEND CONDITIONS FOR A CONDITIONAL USE PERIVIIT AND SITE DEVELOPMENT PERMIT FOR A WIRELESS COMMUNICATIONS FACILITY LANDS LOS ALTOS HILLS (T -MOBILE WIRELESS) WITHIN THE PUBLIC ROAD RIGHT OF WAY 0 FRONT OF 12400 STONE BROOK DRIVE); FILE # 248 -10 -IS ND -SD -CUP PLANNING DEPARTMENT: No modifications to the approved site development plans are allowed except as otherwise first reviewed and approved by the Planning Director or the Planning Commission, depending on the scope of the changes. 2. 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 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 inconsistent with the approved use or in violation of Town development codes. 3. A copy of the site leasing agreement with PG&E shall be executed and submitted to the Town, prior to acceptance of plans for building plan check The agreement terms will include access routes associated with use of the equipment cabinet and antennas located on the telephone pole. 4. The applicant shall submit a signed agreement to the Town, agreeing that, should the use be discontinued by the carrier, all facilities will be removed not later than 90 days after discontinuance of the use or abandonment. The agreement must be signed by the applicant and submitted to the Town prior to acceptance of plans for building plan check 5. The applicant shall submit a signed and notarized agreement to the Town, agreeing that, should the Town proceed with a project to underground overhead utility poles, T -Mobile wireless will, at their expense, remove the subject antennas, equipment cabinets, radome, and pole extension, and not hold the Town responsible. The agreement must be signed and notarized by the applicant and submitted to the Town prior to acceptance of plans for building plan check 6. The applicant shall defend, indemnify, and hold harmless the Town of Los Altos Hills and its agents, officers, and employees from any claim, action, or proceeding against the Town of Los Altos Hills or its agents, officers, or employees to attack, set aside, void, or annul an approval of the project to the extent such actions are brought within the time period required by Government Code Section 66499.37 or other applicable law; provided, however, that the Applicant's duty to so defend, indemnify, and hold harmless shall be subject to the Town's promptly notifying the Applicant of any said claim, action, Staff Report to the Planning Commission Lands of Los Altos Hills March 3, 2011 Page 5 of 7 or proceeding and the Town's full cooperation in the defense of such actions or proceedings. 7. The use permit shall expire ten (10) years from the date of approval. Renewal of the permit must be requested in writing, with appropriate fees, prior to the expiration date. 8. The new monopoles, antennas, radome, and ground equipment cabinet shall be painted a matte dark brown color. A sample of all colors and materials must be reviewed and approved by the Planning Department prior to issuance of the Building Permit. 9. No lights shall be installed on the communications facility. 10. T -Mobile 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. 11. The communications facility shall comply with the Town's noise ordinance at all times. The applicant shall perform an acoustical analysis of the equipment in the equipment enclosure to demonstrate that noise emissions from the equipment is at or below 40db. A report prepared by an acoustical engineer shall be submitted to the Planning Department, prior to final inspection. ENGINEERING DEPARTMENT: 12. Any, and all, changes to the proposed Site Plan shall first be approved by the Town Engineering Department. No .grading shall take place during the grading moratorium (October 15 to April 15) except with prior approval from the City Engineer. No grading shall take place within ten feet of any property line. 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. CONDITIONS NUMBERS 3, 4, and 5 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. Staff Report to the Planning Commission Lands of Los Altos Hills March 3, 2011 Page 6 of 7 ATTACHMENT 2 CONDITIONAL USE PERMIT FINDINGS. OF APPROVAL FOR A WIRELESS COMMUNICATIONS FACILITY LANDS LOS ALTOS HILLS (T -MOBILE WIRELESS) WITHIN THE PUBLIC ROAD RIGHT OF WAY (iN FRONT OF 12400 STONE BROOK DRIVE); FILE # 248 -10 -IS -ND -SD -CUP 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 .Town's Wireless Communications Policy establishes Town owned property, Foothill College, water tanks, other public or quasi public facilities, such as schools or churches, and residential properties of at least ten (10) acres as locations where wireless communications facilities should be located. Construction of the proposed wireless installation will be located on an existing telephone pole and will not place an undue burden on existing transportation, utilities, and services in the vicinity. The unmanned facility requires on-site visits by maintenance personnel on monthly basis. 2. The site for the proposed use is adequate in size and shape to accommodate the proposed 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 location of the proposed wireless communications facility is located on an existing telephone pole, within the public road right of way. The associated equipment cabinets will also be located on the telephone pole. No trees or significant vegetation are proposed for removal. 3. The site for the proposed use will be served by streets and highways of adequate width and pavement to carry the quantity and kind of traffic generated by the proposed use; and The construction and maintenance of the proposed wireless communications facility will generate minimal additional traffic. The site is served by Stonebrook Drive, which can accommodate traffic generated by the proposed use. No materials will be stored in the right of way. 4. The proposed use will not adversely affect the abutting property or the permitted use thereof. Staff Report to the Planning Commission Lands of Los Altos Hills March 3, 2011 Page 7 of 7 The conditions of approval of this permit include standards in accordance with the Wireless Communications Policy to ensure land use compatibility. In addition, the proposal will not increase visual impacts from surrounding properties. The proposed wireless communications facility, as conditioned, does not pose any foreseeable impact to human or environmental health and will not interfere with permitted uses in the vicinity. Attachment 3 INITIAL STUDY Initial Study Checklist & References Wireless Communications Facility Applicant -T -Mobile 248 -10 -IS -ND -SD -CUP Prepared By: Town of Los Altos Hills -Planning Department 26379 Fremont Road Los Altos Hills, CA 94022 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 2 of 23 In accordance with the policies regarding implementation of the California Environmental 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 area 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 be the project applicant, then the project would be eligible for a Mitigated Negative Declaration. Environmental Checklist Form 1. Project Title: New wireless communications facility (File # 248 -10 -IS -ND -SD -CUP) 2. Lead Agency Name and Address: Town of Los Altos Hills, 26379 Fremont Road, Los Altos Hills, CA 94022 3. Contact Person and Phone Number: Debbie Pedro, AICP, Planning Director (650) 941- 7222 4. Initial Study prepared by: Nicole Horvitz, Assistant Planner (650) 941-7222 5. Project Location: Within the public road right of way in front of 12400 Stonebrook Drive, Los Altos Hills, CA 94022 6. Project Sponsor's Name and Address: Talin Aghazarn, T -Mobile Wireless, 21 C Orinda Way #254, Orinda, CA 94563 7. General Plan Designation: R -A (Residential -Agricultural) 8. Zoning: R -A (Residential -Agricultural) 9. Description of ProJect: The applicant is requesting approval of a Site Development permit and Conditional Use permit for a new wireless communications facility to be constructed on an existing PG&E telephone pole. The applicant requests to increase the height of the telephone pole from 32' to 43'. Three (3) flush mounted panel antennas are proposed at 38' from grade. The associated equipment cabinet is proposed on the telephone pole at approximately 7' from grade. 10. Surrounding Land Uses and Setting: Surrounding land uses include one and two story single-family residences with minimum lot size of 1 acre. 11. Other public agencies whose approval is required: Pacific Gas and Electric Company Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 3 of 23 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. ZAesthetics ❑ 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, Q there will not be a significant effect in this case because the mitigation measures described on attached sheet have been added 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: �`^'`M r" Date: Debbie Pedro, AICP, Planning Director Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 4 of 23 I. AESTHETICS -- Would the project: a) Have a substantial adverse effect on a ❑ ❑ ❑ Q scenic vista? b) Substantially damage scenic resources, including, but not limited to, trees, rock ❑ ❑ ❑ Q outcroppings, and historic buildings within a state scenic highway? c) Substantially degrade the existing visual ❑ Q ❑ ❑ character or quality of the site and its surroundings? d) Create a new source of substantial light ❑ ❑ ❑ Q or glare which would adversely affect day or nighttime views in the area? IMPACT: The proposed project is not situated on a scenic vista or within the vicinity of a state scenic highway. The Los Altos Hills General Plan identifies important vistas, historic sites, and scenic highways within the Town. None of these resources listed in the General Plan will be negatively impacted by the proposal. The height of the telephone pole will be increased from 32' to 43'. Three (3) flush mounted panel antennas will be at 38' from grade and to be enclosed by a 16" diameter radome. The associated equipment cabinets are proposed on the telephone pole starting at 7' from grade. Mitigation: Visual impacts will be mitigated by painting the antennas, equipment cabinets, radome, and pole extension to blend with the existing telephone pole. Sources: 1, 2, 5, 20 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 5 of 23 11. AGRICULTURE RESOURUES-- 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 L3 LJ L3 10 agricultural use, or a Williamson Act contract? c) Involve other changes in the existing environment which, due to their location or 0 L3 L3 nature, could result in conversion of Farmland, to non-agricultural use? Discussion: The proposed wireless communications facility will have no foreseeable impact on Agricultural Resources. Mitigation: None Source: 8 L," Potentially ai Less ThanIncorporation g - 11. AGRICULTURE RESOURUES-- 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 L3 LJ L3 10 agricultural use, or a Williamson Act contract? c) Involve other changes in the existing environment which, due to their location or 0 L3 L3 nature, could result in conversion of Farmland, to non-agricultural use? Discussion: The proposed wireless communications facility will have no foreseeable impact on Agricultural Resources. Mitigation: None Source: 8 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 6 of 23 III. AIR QUALITY -- Would the project: a) Conflict with or obstruct implementation of the applicable air quality plan? ❑ ❑ ❑ Q b) Violate any air quality standard or contribute substantially to an existing or projected air ❑ ❑ ❑ Q quality violation? c) Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non -attainment under an applicable federal or state ambient air quality ❑ ❑ ❑ Q standard .(including releasing emissions which exceed quantitative thresholds for ozone precursors)? d) Expose sensitive receptors to substantial pollutant concentrations? ❑ ❑ ❑ 0 e) Create objectionable odors affecting a ❑ ❑ ❑ Q substantial number of people? Discussion: Santa Clara County is currently a non -attainment basin for ozone thresholds but achieves an attainment level for carbon monoxide emissions. The proposed wireless communications facility will have no foreseeable impact on carbon monoxide emissions. Mitigation: None Source: 9 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 7 of 23 Less Than s r Potentiall t ' Less Than i nificant w� Sign�fcant - Un S�gmfcant No Impact M�hgat�, { Impact Incorporation Impact _ IV. BIOLOGICAL RESOURCES -- Would the project: a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? b) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations, or by the California Department of Fish and Game or US Fish and Wildlife Service? c) Have a substantial adverse effect on federally 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? d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? f) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? IMPACT: None MITIGATION: None Sources: 1,6,10 ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 8 of 23 • Less Than .i Potentially Less' -'Th an Significant �iicant with Signtficant „ No Impact Sign E Mitigation Impact Incorporation` Impact V. CULTURAL RESOURCES — Would the project: a) Cause a substantial adverse change in the significance of a historical resource as defined ❑ ❑ ❑ Q in ' 15064.5? b) Cause a substantial adverse change in the significance of an archaeological resource ❑ ❑ ❑ Q pursuant to '15064.5? c) Directly or indirectly destroy a unique paleontological resource or site or unique ❑ ❑ ❑ Q geologic feature? d) Disturb any human remains, including ❑ ❑ ❑ Q those interred outside of formal cemeteries? IMPACT: The proposed wireless communications facility will have no foreseeable impact on Cultural Resources as defined in Title 14; Chapter 3; Article 5; Section 15064.5 of the California Environmental Quality Act. The site does not contain a listed historical building and no known archeological resources exist on the subject property. MITIGATION: None Sources: 3, 5, 16, 19 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 9 of 23 VI. GEOLOGY AND SOILS -- Would the project: a) Expose people or structures to potential substantial adverse effects, including the risk of loss, injury, or death involving: i) Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Refer to Division of Mines and Geology Special Publication 42. ii) Strong seismic ground shaking? iii) Seismic -related ground failure, including liquefaction? iv) Landslides? b) Result in substantial soil erosion or the loss of topsoil? c) Be located on a geologic unit or soil that is unstable, 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-B of the Uniform Building Code (1994), creating substantial risks to life or property? e) Have soils incapable of adequately supporting the use of septic tanks or alternative waste water disposal systems where sewers are not available for the disposal of waste water? IMPACT: None MITIGATION: None Sources: 12 ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 10 of 23 f Less Than . s Potentiall' Less Than Y �� S�gmficantwtth , = t S�gmf'carit ti S�gmficant No Impact M� 'gation Impact Impact- . Incorporation VII. HAZARDS AND HAZARDOUS MATERIALS -- Would the project: a) Create a significant hazard to the public or the environment through the routine transport, ❑ ❑ ❑ Q use, or disposal of hazardous materials? b) Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions ❑ ❑ ❑ Q 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 ❑ ❑ ❑ Q of an existing or proposed school? d) Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a ❑ ❑ ❑ Q significant hazard to the public or the environment? e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result ❑ ❑ ❑ Q in a safety hazard for people residing or working in the project area? f) For a project within the vicinity of a private airstrip, would the project result in a safety hazard for people residing or working in the ❑ ❑ ❑ Q project area? g) Impair implementation of or physically interfere with an adopted emergency response ❑ ❑ ❑ Q plan or emergency evacuation plan? h) Expose people or structures to a significant risk of loss, injury or death involving wildland fires, including where wildlands are adjacent ❑ ❑ ❑ Q to urbanized areas or where residences are intermixed with wildlands? Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 11 of 23 Discussion: The proposed wireless communications facility does not produce a hazard or hazardous waste and will have no foreseeable impact related to Hazards and Hazardous Materials. The site is not located in an identified location according to CA Government Code 65962.5. Mitigation: None Sources: 13,17 r 0 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 12 of 23 Vlll HYDROLOGY AND WATER QUALITY -- Would the project: a) Violate any water quality standards or waste ❑ ❑ ❑ Q 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- ❑ ❑ ❑ Q 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 site or area, including through the alteration of the course of a stream or river, in a manner ❑ ❑ ❑ Q which would result in substantial erosion or siltation on- or off-site? 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 ❑ ❑ ❑ Q 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 ❑ ❑ ❑ Q stormwater drainage systems or provide substantial additional sources of polluted runoff? f) Otherwise substantially degrade water quality? ❑ ❑ ❑ Q g) Place housing within a 100 -year flood hazard area as mapped on a federal Flood Hazard ❑ ❑ ❑ Q Boundary or Flood Insurance Rate Map or other flood hazard delineation map? h) Place within a 100 -year flood hazard area structures which would impede or redirect flood ❑ ❑ ❑ Q flows? i) Expose people or structures to a significant risk of loss, injury or death involving flooding, ❑ ❑ ❑ Q including flooding as a result of the failure of a levee or dam? j) Inundation by seiche, tsunami, or mudflow? ❑ ❑ ❑ 0 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 13 of 23 IMPACT: The proposed wireless communications facility will have no foreseeable impact on Hydrology and Water Quality as defined in this section. MITIGATION: None Sources: 2, 11, 14 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 14 of 23 IX. LAND USE AND PLANNING -- Would the project: a) Physically divide an established community? ❑ ❑ ❑ Q 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, ❑ ❑ ❑ Q local coastal program, or zoning ordinance) adopted for the purpose of avoiding or mitigating an environmental effect? c) Conflict with any applicable habitat conservation plan or natural community ❑ ❑ ❑ Q conservation plan? Discussion: The proposed wireless communications facility will not physically divide a community. The project complies with the Los Altos Hills General Plan and Wireless Communications Facilities Policy. Mitigation: None Sources: 4, 5, 6 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 15 of 23 X. MINERAL RESOURCES -- Would the project: a) Result in the loss of availability of a known mineral resource that would be of value to the ❑ ❑ ❑ Q region and the residents of the state? b) Result in the loss of availability of a locally -important mineral resource recovery ❑ ❑ ❑ Q site delineated on a local general plan, specific plan or other land use plan? Discussion: The proposed wireless communications facility will not result in a loss of mineral resources. The project is not located in an area known for valued minerals. Mitigation: None Sources: 5,6 i tt Potentially t Less Than Less Than t S�gmficantSignificant Significant with No Impact Impact ' 1Vlrt�gat�on Im act p r k Incorporation rt i I t 4 y X. MINERAL RESOURCES -- Would the project: a) Result in the loss of availability of a known mineral resource that would be of value to the ❑ ❑ ❑ Q region and the residents of the state? b) Result in the loss of availability of a locally -important mineral resource recovery ❑ ❑ ❑ Q site delineated on a local general plan, specific plan or other land use plan? Discussion: The proposed wireless communications facility will not result in a loss of mineral resources. The project is not located in an area known for valued minerals. Mitigation: None Sources: 5,6 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 16 of 23 XI. NOISE --Would the project result in: a) Exposure of persons to or generation of noise levels in excess of standards established ❑ ❑ ❑ Q in the local general plan or noise ordinance, or applicable standards of other agencies? b) Exposure of persons to or generation of excessive groundborne • vibration or ❑ ❑ ❑ Q groundbome noise levels? c) A substantial permanent increase in ambient noise levels in the project vicinity ❑ ❑ ❑ Q above levels existing without the project? d) A substantial temporary or periodic increase in ambient noise levels in the project ❑ ❑ . Q ❑ vicinity above levels existing without the prof ect? e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport ❑ ❑ ❑ Q 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, would the project expose people ❑ ❑ ❑ Q residing or working in the project area to excessive noise levels? Discussion: The proposed wireless communications facility will be regulated by the Town's established noise standards. Interim construction noise levels associated with improvements and future site development will likely periodically exceed 40dB (A) but can be held to less than significant by adherence to Town standards for hours of construction. Once development is complete, day to day living will produce noises from the associated equipment. No immitigable or new types of noise impacts are anticipated. Mitigation: None Sources: 6 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 17 of 23 XII. POPULATION AND HOUSING -- Would the project: a) Induce substantial population growth in an area, either directly (for example, by proposing new homes and businesses) or ❑ ❑ ❑ Q indirectly (for example,, through extension of roads or other infrastructure)? b) Displace substantial numbers of existing housing, necessitating the construction of ❑ ❑ ❑ Q replacement housing elsewhere? c) Displace substantial numbers of people, necessitating the construction of replacement ❑ ❑ ❑ Q housing elsewhere? Discussion: The proposed wireless communications facility will not have a significant impact on population or housing. Mitigation: None Sources: 2,3 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 18 of 23 XIII. PUBLIC SERVICES-- Would the project: a) Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times or other performance objectives for any of the public services: Fire protection? Police protection? Schools? Parks? Other public facilities? Potentially Less Than mficaht with Signi iicant Si r Si mficant No Impact g a Mitigation wg Impact Impact' Incorporation - u Pi ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q Discussion: The proposed wireless communications facility will not have a foreseeable impact on any public service or facility. Mitigation: None Sources: 2,3 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 19 of 23 XIV. RECREATION — Would the project: a) Would the project increase the use of existing neighborhood and regional parks or other recreational facilities such that ❑ ❑ ❑ Q substantial physical deterioration of the facility would occur or be accelerated? b) Does the project include recreational facilities or require the construction or expansion of recreational facilities which ❑ ❑ ❑ Q might have an adverse physical effect on the environment? Discussion: The proposed wireless communications facility will not have a foreseeable impact on recreation facilities. Mitigation: None Sources: 5,6 t Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 20 of 23 � � ` � Potentially + Less: Than Less Than � ,� Significant with 3 � � - Significant Significant '_No Impact Impact Impact Incorporation r XV. TRANSPORTATION/TRAFFIC — Would the project: a) Cause an increase in traffic which is substantial in relation to the existing traffic load and capacity of the street system (i.e., result in a substantial increase in either the ❑ ❑ ❑ Q number of vehicle trips, the volume to capacity ratio on roads, or congestion at intersections)? b) Exceed, either individually or cumulatively, a level of service standard established by the ❑ ❑ ❑ Q county congestion management agency for designated roads or highways? c) Result in a change in air traffic patterns, including either an increase in traffic levels or ❑ ❑ ❑ Q a change in location that results in substantial safety risks? d) Substantially increase hazards due to a design feature (e.g., sharp curves or dangerous L3, ❑ ❑ Q intersections) or incompatible uses (e.g., farm equipment)? e) Result in inadequate emergency access? ❑ ❑ ❑ Q f) Result in inadequate parking capacity? ❑ ❑ ❑ Q g) Conflict with adopted policies, plans, or programs supporting alternative transportation ❑ ❑ ❑ Q (e.g., bus turnouts, bicycle racks)? Discussion: The proposed wireless communications facility is unmanned. There is no foreseeable increase of traffic congestion on existing local roadways. Mitigation: None Sources: 1,2,3,5 I W Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 21 of 23 XVI. UTILITIES AND SERVICE SYSTEMS— I V6 . E s I Potentially ,Less Than{r Less Than of the applicable Regional Water Quality ❑ Significant with S�gmficant ; No Impact Control Board? Impact 1Vhfigat�on Impact t � � - �` f 1 £ z Incorpornt�on � - k water or wastewater treatment facilities or expansion of existing facilities, the ❑ ❑ ❑ Q XVI. UTILITIES AND SERVICE SYSTEMS— Would the project: a) Exceed wastewater treatment requirements of the applicable Regional Water Quality ❑ ❑ ❑ Q Control Board? b) Require or result in the construction of new water or wastewater treatment facilities or expansion of existing facilities, the ❑ ❑ ❑ Q construction of which could cause significant environmental effects? c) Require or result in the construction of new storm water drainage facilities or expansion of ❑ ❑ ❑ Q existing facilities, the construction of which could cause significant environmental effects? d) Have sufficient water supplies available to serve the project from existing entitlements ❑ ❑ ❑ Q and resources, or are new or expanded entitlements needed? e) Result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to ❑ ❑ ❑ Q 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 ❑ ❑ ❑ Q project's solid waste disposal needs? g) Comply with federal, state, and local ❑ ❑ ❑ Q statutes and regulations related to solid waste? Discussion: The proposed wireless communications facility will not have a foreseeable impact on utility and service systems. Mitigation: None Sources: 1, 2, 3, 15 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 22 of 23 XVII. MANDATORY FINDINGS OF SIGNIFICANCE -- Would the project: a) Does the project have the potential to degrade the 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 a rare 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 limited, but cumulatively considerable? ("Cumulatively considerable" means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects)? c) Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly? ❑ ❑ ❑ Q ❑ ❑ ❑ Q ❑ ❑ ❑ Q Discussion: The proposed project will not result in a negative impact to the environment, wildlife, plant or historical resource. The project does not have any foreseeable cumulative or unmitigated impacts as defined in this Initial Study. Mitigation: None Sources: 1-19 Town of Los Altos Hills Initial Study Lands of Los Altos Hills (applicant -T -Mobile Wireless) February 23, 2011 Page 23 of 23 MITIGATION MEASURES INCLUDED IN THE PROJECT TO AVOID POTENTIALLY SIGNIFICANT EFFECTS: 1. The new antennas and equipment cabinet shall be painted a dark brown color to match the existing telephone pole they will be constructed on. 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, 2010 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 Game CNDDP 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. Federal Emergency Management Agency, Flood Insurance Rate Map, Los Altos Hills, May 18, 2009 15. Sanitary Sewer Map, Town of Los Altos Hills Engineering Department 16. Santa Clara County Municipal Code Chapter II Indian Burial Grounds (Title B Division B-6) 17. Hammet & Edison, Inc dated October 4, 2010 18. CEQA Guidelines, 2010 19. Google Earth Exhibit List: 1. Project plans J' TOWN OF LOS ALTOS HILLS MITIGATED NEGATIVE DECLARATION PROJECT TITLE: Wireless Communications Facility (T -Mobile Wireless) PREPARED BY: Nicole Horvitz, Assistant Planner NAME AND ADDRESS OF PROJECT SPONSOR: Town of Los Altos Hills 26379 Fremont Road_ Los Altos Hills, CA 94022 LOCATION OF PROJECT: Within the public road right of way in front of 12400 Stonebrook Drive, Los Altos Hills, CA 94022 PROJECT DESCRIPTION: Conditional Use Permit and Site Development permit for a new wireless communications facility. The height of the telephone pole will be increased from 32' to 43'. Three (3) flush mounted panel antennas will be at 38' from grade. The associated equipment cabinets are at approximately 7' from grade on the telephone pole. FINDING: The Town of Los Altos Hills has completed a review of the proposed project, and on the basis of the attached Initial Study, has determined that the project, as mitigated, will reduce impacts to a less than significant level. MITIGATION MEASURES INCLUDED IN THE PROJECT TO AVOID POTENTIALLY SIGNICIANT EFFECTS: To ensure that visual impacts of the proposed installations will be mitigated as follows: The antennas, equipment cabinets, pole extension, and radome will be painted a brown color to blend in with the existing telephone pole. Debbie Pedro, AICP, Planning Director Date Town of Los Altos Hills Circulated on: February 23, 2011 Adopted on: Attachment 4 T -Mobile West Corp. - Proposed Base Station (Site No. SF15096E) 12451 Stonebrook Drive - Los Altos, CA Statement of Hammett & Edison, Inc., Consulting Engineers The firm of Hammett & Edison, Inc., Consulting Engineers, has been retained by T -Mobile West Corp., a personal wireless telecommunications carrier, to evaluate the base station (Site No. SF15096E) proposed to be. located at 12456 Stonebrook Drive in Los Altos, CA, for compliance with appropriate guidelines limiting human exposure to radio frequency ("RF") electromagnetic fields. Executive Summary T -Mobile proposes to install directional panel antennas on the existing 32 -foot utility pole sited across the street from the one-story residence located at 12451 Stonebrook Drive in Los Altos. The proposed operation will comply with the FCC guidelines limiting public exposure to RF energy. Prevailing Exposure Standards The U.S. Congress requires that the Federal Communications Commission ("FCC") evaluate its actions for possible significant impact on the environment. 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 FCC limit for exposures of unlimited duration to radio frequency energy for several personal wireless services are as follows: Wireless Service Freauency Band Occupational Limit Public Limit Microwave (Point to -Point) 5-80,000 MHz 5.00 mW/cm2 1.00 mW/cm2 BRS (Broadband Radio) 2,600 5.00 1.00 AWS (Advanced Wireless) 2,100 5.00 1.00 PCS (Personal Communication) 1,950 5.00 1.00 Cellular 870 2.90 0.58 SMR (Specialized Mobile Radio) 855 2.85 0.57 700 MHz 700 2.35 0.47 [most restrictive frequency range] 30-300 1.00 0.20 Power line frequencies (60 Hz) are well below the applicable range of these standards, and there is considered to be no compounding effect from simultaneous exposure to power line and radio frequency fields. General Facility Requirements Base stations typically consist of two distinct parts: the electronic transceivers (also called "radios" or "channels'l 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 HAmmETT & EDISON, INC CO -\St L;I'AG ENGINEERS TM15096E596 S.4n W.anciscv Page 1 of 4 T -Mobile West Corp. - Proposed Base Station (Site No. SF15096E) 12451 Stonebrook Drive - Los Altos, CA transceivers are often located at ground level and are connected to the antennas by coaxial cables. A small antenna for reception of GPS signals is also required, mounted with a clear view of the sky. 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 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 at greater distances 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 T -Mobile, including construction drawings by 4Ground Design Group, Inc, dated August 19, 2010, it is proposed to install three RFS Model APXV 15-206513-C directional panel antennas on top of the existing 32 -foot utility pole sited in the public right-of-way alongside Stonebrook Drive, opposite the one-story residence located at 12451 Stonebrook Drive in Los Altos. The antennas would be mounted with 2* downtilt at an effective height of about 41 feet above ground and would be oriented at about 120° spacing, to provide service in all directions. The maximum effective radiated power in any direction would be 330 watts, representing simultaneous operation at 200 watts for AWS and 130 watts ' for PCS. There are reported no other wireless telecommunications base stations nearby. Study Results For a person anywhere at ground, the maximum ambient RF exposure level due to the proposed T -Mobile operation is calculated to be 0.0013 mW/cm2, which is 0.13% of the applicable public exposure limit. The maximum calculated level at the second -floor elevation of any nearby residence` is 0.26% of the public exposure limit. It should be noted that these results include several "worst- * Located at least 90 feet away, based on the drawings. HAmmErr & EDISON, INC. CONSUL]ING ENGINEERS TM15096E596 SAN FRANCISCY) Page 2 of 4 r I r T -Mobile West Corp. - Proposed Base Station (Site No. SF15096E) 12451 Stonebrook Drive - Los Altos, CA case' assumptions and therefore are expected to overstate actual power density levels from the proposed operation. Recommended Mitigation Measures Due to their mounting locations, the T -Mobile antennas would not be accessible to the general public, and so no mitigation measures are necessary to comply with the FCC public exposure guidelines. To prevent occupational exposures in excess of the FCC guidelines, no access within 2 feet directly in front of the antennas themselves, such as might occur during maintenance work on the pole, should be allowed while the base station is in operation, unless other measures can be demonstrated to ensure that occupational protection requirements are met. Posting explanatory warning signst at the antennas and/or on the pole below the antennas, such that the signs would be readily visible from any angle of approach to persons who might need to work within that distance, would be sufficient to meet FCC - adopted guidelines. Conclusion Based on the information and analysis above, it is the undersigned's professional opinion that operation of the base station proposed by T -Mobile West Corp. at 12451 Stonebrook Drive in Los Altos, CA, 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. Posting of explanatory signs is recommended to establish compliance with occupational exposure limitations. t Warning signs should comply with OET-65 color, symbol, and content recommendations. Contact information should be provided (e.g., a telephone number) to arrange for access to restricted areas. The selection of language(s) is not an engineering matter, and guidance from the landlord, local zoning or health authority, or appropriate professionals may be required. Signage may also need to comply with the requirements of California Public Utilities Commission General Order No. 95. HAmmm & EDISON, INC. CoNsLt, INGENGINEERS TM15096E596 SAN FRANCIRV Page 3 of 4 T -Mobile West Corp. • Proposed Base Station (Site No. SF15096E) 12451 Stonebrook Drive • Los Altos, CA 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, 2011. This work has been carried out 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. October 4, 2010 HAMMETT & EDISON, INC. CONSL' MNG ENGINEERS TM15096E596 SAN FRANCISCO Page 4 of 4 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 ("NCRP"). Separate limits apply for occupational and public exposure conditions, with the latter limits generally five tunes more restrictive. The more recent standard, developed by the Institute of Electrical and Electronics Engineers and approved as American National Standard ANSMIEEE C95.1-2006, "Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz," includes similar limits. 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: FrecLuency Applicable Range (K&) 03— 1.34 1.34-3.0 3.0— 30 30— 300 300— 1,500 1,500— 100,000 1000 Electromagnetic Fields (f is freauencv of emission in MHz Electric Magnetic Equivalent Far -Field Field Strength Field Strength Power Density (V/m) (Alm) (mwicmZ) 614 614 1.63 1.63 100 100 614 823.8/f 1.63 2.19/f 100 18011 1842/ f 823.8/f 4.89/ f 2.191f 900/ f'' 180/1 61.4 27.5 0.163 0.0729 1.0 0.2 3.541'f 1.59ff 1rf/106 -&238 f/300 J71500 137 61.4 0.364 0.163 5.0 1.0 d Occupational Exposure PCS �♦ FM Cell ♦ PublicEx Ex osure 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. eEsB AIVIIV m & EDISON, INC OONSUMNGHNGWEQts FCC Guidelines sANFRANCOao Figure 1 RFR.CAI..CT" 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 base stations, as well as dish (aperture) antennas, typically used for microwave links. The antenna patterns are not fully formed in the near field at these antennas, and the FCC Office of Engineering and Technology Bulletin No. 65 (August 1997) gives suitable formulas for calculating power density within such zones. For a panel or whip antenna, power density S = 180 x 0.1 x Pnd , in mW/On2, OBw ;rxD xh and for an aperture antenna, maximum power density Smx = 0.1x16xr7xPn,n x h2 , in mW/CM2, where OBW = half -power beamwidth of the antenna,. in degrees, and Pnet = net power input to the antenna, in watts, D = distance from antenna, in meters, h = aperture height of the antenna, in meters, and rl = aperture efficiency (unitless, typically 0.5-0.8). The factor of 0.1 in the numerators converts to the desired units of power density. Far Field. OET-65 gives this formula for calculating power density in the far field of an individual RF source: power density S = 256 x 1.64 x 100 x RFF2 x ERP, inmW/ 4x�xDZ �2� 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. HAmmErr & EDISON, INC 00W -AM aoxs[n MNG ENG rEUS Methodology sntaFsaNCSCo Figure 2 Attachment 5 SU'TRO CONSULTIN 21 'C' Odnda Way, #254, Odnda, CA 94563 • www.sutroconsulbng.com October 25, 2010 Town of Los Altos Hills Attn: Nicole Horvitz 26379 Fremont Road Los Altos Hills, CA 94022 Dear Ms. Horvitz: Sutro Consulting, on behalf of T -mobile, is submitting a request for a Conditional Use Permit for a new wireless facility located on an existing wooden utility pole along the public right of way. The pole is located in front of 1.2400 Stonebrook DRive, in Los Altos Hills, CA. Please review the below information for property description and submittal requirements: Site No.: Zoning: Project Address Site: Assessor Parcel Number: Agent Contact: Project Description SF15096 In front of 124M Stonebrook Drive, site is located in public R -O -W 336-23-002 (1245bStonebrook Drive) Sutro Consulting Talin Aghazarian 21 `C' Orinda Way, #254 Orinda, CA 94563 T -mobile is proposing to construct, operate and maintain a wireless telecommunications facility on an existing utility wooden pole in the public right of way. The pole is located in front of 124CA Stonebrook Drive. The proposed facility will involve adding three panel antennas located inside a radome mounted on an existing 32 foot high utility pole. The pole will be extended and the antennas will be placed at approximately 44 feet on the pole. The three Ericsson Base Transceiver Station (BTS) equipment cabinets and electric meter will be located on the pole starting from 7 high on the pole. Safety and Compliance The proposed facility will not be detrimental to the character of .development, as it will be un- staffed, having no impact on circulation systems. Furthermore, it will generate no addition, the proposed wireless telecommunications facility will operate in full compliance with all local noise, odor, smoke or any other adverse impacts to adjacent land uses. T -Mobile technology does not interfere with any other forms of private or public communications systems. Page 1 of 3 SUI'RO CONSULTING 21 'C' Odnda Way, #254, Odnda, CA 94563 • www.sutroconsulting.com Since their introduction, wireless telecommunications systems have proven to be an invaluable communications tool in the event of emergencies (traffic accidents, fires, etc.) and natural disasters (earthquakes, floods, etc.) where normal land line communications are often disrupted or inaccessible during and after an even has occurred. This service and similar technology are utilized by numerous governmental agencies that provide emergency service. Wireless telecommunications systems, including cellular telephones, have also proven to be invaluable tools in business communications and everyday personal use. Unlike other land uses, which can be spatially determined through the General Plan, the location of wireless telecommunication facilities is based on technical requirements which include service area, geographical elevations, alignment with surrounding sites and customer demand components. Placement within the urban geography is dependent on these requirements. Consequently, wireless telecommunication facilities have been located adjacent to and within all major land use categories including residential, commercial, industrial and open space proving to be compatible in all locations. The proposed facility will not detrimental to the character of development, as it will be un -staffed, having no impact on circulation systems. Furthermore, it will generate no noise, odor, smoke or any other adverse impacts to adjacent land uses. In addition, the proposed wireless telecommunications facility will operate in full compliance with all local, state and federal regulations including the Telecommunications Act of 1996. T -Mobile Company Information Based in Bellevue, Washington, the U.S. operations of T -Mobile International AG & Co. K.G., consists of T -Mobile USA, Inc. (formerly VoiceStream Wireless) and Powertel, Inc. (together'T- Mobile"). T -Mobile is one of the fastest growing nationwide wireless service providers, offering all digital voice, messaging and high-speed wireless. data services to more than 20 million customers in the United States. The T -Mobile global brand name made. its debut in the United States in July 2002, choosing California and Nevada as the first markets in the country to launch its wireless voice and data services. Here in the Bay Area, T -Mobile has purchased and taken control of the former PacBell Wireless/ Cingular System on January 5, 2005. T -Mobile offers consumers and business customers the most advanced mobile communications services available today, including voice, text messaging, and high-speed wireless data services. T -Mobile operates an all-digital, national wireless network based exclusively on GSM technology. T -Mobile holds a license in the California Market as follows: 1950.2-1964.8, 1965.2-1969.8 MHz and 1870.2-1884.8, 1885.2-1889.8 MHz. Submittal Requirements (Per Development Review Package) Development Application Please see the enclosed completed development application. Letter of Authorization is also attached to show PGE consent to be on the pole. Mailing Labels Please see two sets of mailing labels included in the package. Antenna Master Plan Please see the enclosed master plan for the proposed site and surrounding areas. Page 2 of 3 SU'TRO CONSUL.'TIN 21 V 06nda Way, #254, 06nda, CA 94563 • www.sutrooDnsulfing.com Conditional Use Permit Finding Please see the attached findings. EMF Report Please see the enclosed EMF report prepared by Hammett and Edison. Photosimulations Please see the attached photosimulations. Plans Please see the following: 10 sets of 24x36 sets of plans. Filing Fee Please see the enclosed checks for $2,685 Page 3 of 3 Proposed Proposed T -Mobile Antennas AdvanceSiff Proposed T -Mobile Equipment view from Stonebrook Drive looking north at site llh�C3■ SF 15096E Pole Cap Stonebrook ■ ■ ■ ■ fill �/ le IFO 124WStonebrook Drive, Los Altos, CA view from Stonebrook Drive looking northeast at site T- -Mobile - sF 15096E Pole Cap Stonebrook Existing IFO 1246DStonebrook Drive, Los Altos, CA Proposed T -Mobile / Antennos t Proposed T -Mobile Equipment AdvanceSiffE Photo S mutation Solu?ion; Contact ( 925 ) 202.8507 Proposed I Attachment 7 • .. 0 -Mobile- 1855 Gateway Boulevard, 9th Floor Concord, Calftmia 94520 November 29,20`10 Our Neighbors: gcsm UIC 4 if V9 10a�JOS T -Mobile is bringing improved wireless coverage to residents in the area surrounding Stonebrook Drive. A new wireless facility in your neighborhood will help accommodate the growing number of wireless calls and data transmission made on the T -mobile network. Our customers have told us that they expect solid coverage where they hire. work and play. Wireless Facility We will locate our equipment on an existing 32 foot high utility pole along the public right of way that Is located in front of 12408 Stonebrook Drive. The pole will be extended to 44 feet and (3) three antennas will be added to the top. The antennas will be enclosed in a radome that will match the color of the pole. The four equipment boxes will be placed on the pole starting seven feet from the ground and range in size from 2.75 square feet box to 4 square feet box and will also match the color of the pole. Benefits of New Facility The needed capacity provided by the new facility will help ensure that 9-1-1 calls are placed from wireless phones in the area will reach and stay connected with emergency services personnel. The facility is designed to blend into the surrounding area while ensuring coverage and, call quality will not be diminished. T Moblle customers will have expanded coverage throughout their homes as well as areas throughout the neighborhood Please Give us Your Thoughts I welcome the opportunity to discuss the wireless facility with you in more detail. Please feel free to contact me at (925) 521-3942, or via email at Moharnmed.Hill55 o-T-Mobile.com. Thank you for your support in our efforts to expand coverage to your community. Mohammed Hill Zoning Manager ComSys for T -Mobile West Corporation r. g Attachment 8 TOWN OF LOS /ALTOS HILLS LosAi�oslilLLs 26379 Fremont Road 4 Los Altos Hills, CA 94022 , Phone: (650) 941-7222 www.losaltoshills.ca.gov CALIFORNIA Wireless Communications Facilities Policy Amended 10/12/2006 Code Sections 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 10-1.1007 (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. 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 communications facilities will be most appropriately located on public or institutional sites existing within the Town. Colocation, 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. Policy: 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 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 property owner provides written consent and significant visual impacts are mitigated. 3. Colocation — Colocation of wireless communication facilities with other facilities is encouraged to the maximum extend feasible, as long as the colocation 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 colocation of other facilities, subject to technological constraints and Town review. -a --;,I A Policy: Wireless Communication Facilities Page 2 3a. Applications for colocation on an existing wireless communications facility shall be subject to an administrative review provided that the following requirement is met: © The colocated antennas and ground equipment shall be mounted or installed within an existing tower, building, or structure where the physical appearance of the existing facility is not altered to accommodate the additional antennas and equipment. 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 colocated 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 request shall be reviewed by the Planning Commission and the City Council as a master plan application. 7. Terms of permits and abandonment of sites — Conditional use permits for wireless communications 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 then 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 mad 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 colocation. 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 41 on a temporary basis.