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HomeMy WebLinkAboutStrand Booster Pump station -SAUERS ENGINEERING Sao ZSS 6884 0S10110S O4: 14pm P. 002 Avma. 417 Sauers Engineering, Tnc. Civil & Environmental Engineers Memorandum May 1,2003 TO: Board of Directors, and Ed Taylor, District Water Operations Manager FROM: Keith Knibb, Consulting Engineer 0 SUBJECT: STRAND BOOSTER PUMP STATION AND GLENSHIRE PIPELINE CONSTRUCTION - CEQA 1. Why this matter is before the Board: The District is proposing water system improvements to the distribution system in the Glenshire area. Prior to construction activities, the District is required to complete an environmental review in compliance with CEQA. 2. History District staff has identified the need for a new booster pump station and pipeline in the Glenshire area. These projects were anticipated as part of the acquisition of the Glenshire system. 3. New information We have completed the proposed Negative Declaration and Environmental Initial Study for the Strand Booster Pump Station and Glenshire Pipeline Construction. These documents need to be circulated to responsible and interested agencies and made available for public review_ The District also needs to schedule a public hearing to receive comments. Filing the documents with the county clerk and state clearinghouse will trigger a thirty day review period_ 4. Recommendation I recommend the Board take the following actions regarding the environmental review for the Strand Booster Pump Station and Glenshire Pipeline Construction: 1. Authorize the filing of the proposed Negative Declaration and Environmental Initial Study with the Office of the Nevada County Clerk. 2. Authorize the circulation of the proposed Negative Declaration and Environmental Initial Study with responsible and interested agencies and with the State Clearinghouse. 3. Authorize publication of a Notice of Public Review Period and Public Hearing on the proposed Negative Declaration. 3AUERS ENGINEERING 690 26S 6834 0S/01/08 04:14pm P. 003 a 4. Schedule a public hearing for the proposed Negative Declaration at the regular Board Meeting on June 4, 2003. Attachments: Proposed Mitigated Negative Declaration Environmental Initial Study SAVERS ENGINEERING Sao 266 6664 05/01/03 04: 14pm P. 004 NEGATIVE DECLARATION (XX) Proposed ( ) Final NAME OF PROJECT: Strand Booster Pump Station and Glenshire Pipeline Construction LOCATION: Truckee, California Entity or Person Undertaking Project: (XX) Truckee Donner Public Utility District Other( ) Name: Address: Phone: PROJECT DESCRIPTION: The proposed project involves the construction,operation,and maintenance of a new potable water booster pump station and construction of approximately 2,500 feet of water pipeline. The project will convey water from the Glenshire 2 pressure zone to the Glenshire 1 pressure zone, improving the provision of water for domestic use and fire protection to customers in the upper zone. Finding: It is hereby found that the above named project will not have a significant effect upon the environment. Initial An initial study of this project was undertaken and prepared in accordance with Article V Study: of the District's local environmental guidelines and Section 15063 of the EIR Guidelines for the California Environmental Quality Act for the purpose of ascertaining whether this project might have a significant effect upon the environment. A copy of such initial study is attached hereto and incorporated herein by reference. Such initial study documents reasons to support the above finding. Mitigation The following mitigation measures have been included in the project to avoid potentially Measures: significant effects: M-1. Temporary BMPs will be incorporated into the project design to be implemented before and during construction. BMPs include preservation of existing vegetation, placement of straw mulch, covering temporary spoils piles to protect from rainfall, and removal of spoils material to permanent locations protected from offsite migration. SAUERS ENGINEERING 590 2S5 6884 OSZO1102 04:14pm P. 005 M-2, Permanent BMPs will include revegetation of exposed soil areas,asphalt pavement on pipeline trenches, pump station access road and parking area, and permanent disposal of surplus excavated material at an acceptable location protected from offsite migration. M-3. Fugitive dust emissions resulting from site clearing and any project improvements shall be minimized at all times utilizing control measures including dust palliative, regularly applied water, graveled or paved haul roads, etc. Access or haul roads adjacent to the project must be treated as necessary to prevent off-site migration and accumulation of dirt, soils, or other materials which can subsequently become entrained in ambient air, either from construction related vehicles or from any vehicle using adjacent affected roads. M-4. When transporting material during site preparation or construction,measures shall be used to prevent materials from spilling or blowing onto street and highways. Earthen materials,if transported,shall be adequately sprayed with water or covered prior to transport onto public roads. Vegetative material shall be tarped as necessary prior to transport. Specific control measures shall be noted on improvement and/or grading plans. M-5. Prior to any ground disturbing activities, the District shall complete the Heritage Resource Study including surface survey. Any recommended mitigation measures shall be incorporated into the project. M-6. If artifacts,paleontological or cultural, or unusual amounts of stone,bone, or shell are uncovered during construction activity, work shall be halted and a qualified archaeologist shall be consulted for an on-site review. Mitigation measures, as recommended by the archaeologist and approved by the District in accordance with Appendix K of the CEQA Guidelines, shall be implemented prior to recommencement of construction activity. If any bone appears to be human, California law mandates that the Nevada County Coroner and the Native American Heritage Commission be contacted. Date: BY Peter L. Holzmeister, General Manager SAUERS ENGINEERING S30 26S SeS4 0S/01/03 04:14pm P. 006 Truckee Donner Public Utility District ENVIRONMENTAL INITIAL STUDY (Prepared pursuant to Article V of the Environmental Guidelines of the District) 1. Project Title: Strand Booster Pump Station and Glenshire Pipeline Construction 2. Lead Agency Name and Address: Truckee Donner Public Utility District P.O. Box 309 Truckee, CA 96160-0309 3. Contact Person and Phone Number: Peter L. Holzmeister,General Manager (530)582-3916 4. Project Location: The Strand, approximately 550 feet south of the intersection with Covington Lane, Donnington Lane between Royal Way and The Strand, The Strand between Donnington Lane and Kent Drive, Kent Drive west of Sherwood Drive, and Sherwood Drive between Kent Drive and Somerset Drive Glenshire Subdivision,Truckee,Nevada County, CA Nevada County Assessor's Parcel Number 49-240-31 (pump station) See attachment titled"Strand Booster Pump Station and Glenshire Pipeline Construction,Project Vicinity Map." 5. Project Sponsor's Name and Address: Truckee Donner Public Utility District P.O. Box 309 Truckee, CA 96160-0309 6. General Plan Designation: RES 1-2 DU/ACRE 7. Zoning: RR 0.67 8. Description of Project: (Describe the whole action involved,including but not limited to later phases of the project, and any secondary,support,or off-site features necessary for its implementation.) Project Purpose The proposed project involves the construction, operation, and maintenance of a new booster pump station and construction of approximately 2,500 feet of water pipeline. The project will convey water from the Glenshire 2 pressure zone to the Glenshire 1 pressure zone, improving the provision of water for domestic use and fire protection to customers in the upper zone. I SA'JERS ENGINEERING 530 2S5 E834 '�� �'�'"-' ""' Background The project consists of construction of a new booster pump station,pipeline underground electrical . gr facilities,and pavement at a site located on The Strand in the Glenshire subdivision. The pump station site is currently undeveloped, New pipeline is to be constructed to strengthen the transmission and distribution systems between the upper and lower pressure zones. The sections of pipeline to be constructed are all within existing paved roadways. The project also includes installation of new services off of a portion of the new pipeline. The Glenshire water system utilizes two pressure zones. The tower pressure zone is fed from the Strand set Tanks located near the site of the proposed new pump station. The upper zone y fed by the one existing Tanks located near Somerset Drive. Currently,the upper pressure zone is fed by well elt and an existing booster pump station. Due to the existing pump station's design, location, and the configuration of the adjacent distribution system, it is estimated that the existing pump station is only working at approximately 35%efficiency. The District has constructed a pipeline and is upgrading a well to provide an improved source water supply to the Glenshirc area. Because of poor water quality,local wells which had historically served the Glenshirc area will be taken out of service to be replaced with groundwater supplies from the District's main system. Water i be conveyed through the the Glensh c pressu e one,a portion of which must be pumped to the Transmission Glenishire the(iterishi e I pressure zone.lme to Project Characteristics The new pump station will consist of an approximately 216 square foot building housing pumps,motors, valves.and other mechanical and electrical equipment. There will be construction of approximately 215 feet of 12 inch diameter pipeline taking water from the low pressure distribution system into the pump station and from the pump station out to the high pressure distribution system. There wiil also be construction of approximately 80 feet of underground electrical facilities. The project will include approximately 900 square feet of paved driveway and parking area. New 12" diameter pipeline will be constructed from the intersection of Royal Way and Donnington Lane south and east along Donnington Lane to The Strand,and then south along The Strand to the intersection with Kent Drive. New 12"diameter pipeline will also be constructed along Kent Drive from approximately 400 feet west of Sherwood Drive to the intersection with Sherwood Drive,and east along Sherwood Drive to the intersection with Somerset Drive. Seven new double services and one new fire hydrant will be installed along the east end of Kent Drive and Sherwood Drive. The Glenshire water system currently serves approximately 1,361 service connection&mostly residential with some commercial uses. The service area is at approximately 88%of build-out with 187 out of a total of 1,548 potential service connections currently undeveloped. The proposed new booster pump station will be designed and constructed to meet the build-out condition of the upper Glenshirc pressure zone. The station will include three pumps, each equipped with 20 horsepower motors. The station will have a capacity of 600 gallons per minute. Attached are two exhibits titled"Strand Booster Pump Station,Preliminary Site Plan"and "Strand Booster pump Station and Glenshire Pipeline Construction,Pipeline Location Map" 2 SAJERS ENGINEERING 530 26S SD34 DSrau�� ice:•-.v, 9. Other agencies whose approval is required(and permits needed): Town of Truckee(Encroachment Permit) California Regional Water Quality Control Board, Labo Permit) ion(Report of Waste Discharge) California Department of Health Services(Water Supply 10, Environmental Setting of the Project: The project is located in the Glenshire subdivision,a planned community in Truckee east of the downtown area. The pump station site is a portion of a 5 acre parcel along The Strand, The Strand bisects the parcel leaving a small comer of property separated from the larger parcel. The project site ( parcel is approximately 11,000 square feet(.25 acre). The District has an easement for the project site. The pump station project site is located at an elevation of 6,110 feet. The proposed new pipelines will be constructed within existing road rights-of-way. Construction will involve trenching under paved sections of roads or along shoulders adjacent to paved roads. The pipeline alignment ranges in elevation from 5,990 to 6,100 feet. The Glenshire service area is located in the eastern portion of the Town Truckee. Elevations range between 5,600 feet above sea level near the Truckee River to 6,600 feet above sea level. The Glenshire service area covers approximately 4.6 square miles and includes the Glenshire and Devonshire subdivisions. The area is predominantly single family residential with some commercial development. According to the information Center for the Environment,U.C.Davis, the project area is located in an Urban Agneultural Complex vegetation classification. Other vegetation classifications surrounding the project area include Basin Sagebrush,Jeffrey Pine,and Mixed Conifer-Fir. The pump station site and pipeline are located in an area of single family residential development. The pump station will be located on an undeveloped easement. The pipelines will be located in and along existing streets. The total area of disturbance is estimated to be 0.3 acre. 3 SAUERS ENGINEERING S30 265 6634 "-- 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' or"Potentially Significant Unless Mitigated,"as indicated by the checklist on the following pages. ❑ Land Use and Planning ❑ Transportation/Circulation ❑ Public Services ❑ Population and Housing ❑ Biological Resources ❑ Utilities and Service Systems ❑ Geophysical ❑ Energy and Mineral Resources ❑ Aesthetics S1 Water ❑ Hazards 21 Cultural Resources � Air Quality ❑ Noise ❑ Recreation ❑ Mandatory Findings of Significance Determination. i (To be completed by the Lead Agency.) 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 the attached sheets 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_ Signature Date Per r T Holz me teris General MattaQer Truckee Donner Public Utility District Printed Name For 4 SABERS ENGINEERING 530 265 8834 ©S/01i0S 04:14prn F. Ulu Evaluation of Environmental Impacts: 1) A brief explanation is required for all answers except `No Impact"answers that are adequately supported by the information.sources a lead agency cites in the parentheses following each question. A"No Impact"answer is adequately supported if the referenced information sources show that the impact simply does not apply to projects like the one involved(e,g.the project falls outside a fault rupture zone). A"No bnpact"answer should be explained where it is based on project-specific factors as well as general standards(e.g.the project will not expose sensitive receptors to pollutants,based on a project-specific screening analysis). 2) All answers must take account of the whole action involved,including off site as well as on-site,cumulative as well as project4evel,indirect as well as direct,and construction as well as operational impacts. 3) "Potentially Significant Impact"is appropriate if an effect is significant or potentially significant,or if the lead agency lacks information to make a finding of insignificance. If there me one or nmre`Potentially Significant impact'entries when the determination is made,FIR is required. 4) "Potentially Significant Unless Mitigated"applies where the incorporation of mitigation measures has reduced an effect from`Potentially Significant Impact"to a`Less than Significant lmpact". The lead agency must describe the mitigation measures,and briefly explain now they reduce he effect to a less than significant level (mitigation measures from Section XVII,"Earlier Analyses", may be cross-referenced). 5) Earlier analyses may be used where,pursuant to the tiering,program EIR,or other CEQA process,an effect has I been adequately analyzed in an earlier EIR or negative declaration. Section 15063(e)(3)(D). Earlier analyses are discussed in Section XVII at the end of the checklist. 6) Lead agencies are encouraged to incorporate into the checklist references to information sources for potential impacts(e_g. general plans,zoning ordinances). See the sample question below. A source list should be attached,and other sources used or individuals contacted should be cited in the discussion. 7) This is only a suggested form, and lead agencies are free to use different ones. I Sample Question: potentially Potentially Significant Less Than Significant Unless Significant No issues(and Supporting Information Sources) Impact Mitigated Impact Impact i Would the proposal result in potential impacts involving: ❑ ❑ Landslides or mudslides? (1,6) (Attached source list explains that I is the general plan, and 6 is a USGS topo map. This answer would probably not need further explanation.) L LAND USE AND PLANNING. Would the proposal: a) Conflict with general plan designation or zoning? ❑ ❑ (source tt(s).) b) Conflict with applicable environmental plans or policies adopted by agencies with jurisdiction over the ❑ project? () c) Affect agricultural resources or operations(e.g. impacts to soils or farmlands,or impacts from incompatible land uses)? (1) 5 Potentially Potentially Significant Less Than Significant Unless signifreunt No issues(and supporting Information Sources) Impact Mitigated Impact Impact II. POPULATION AND HOUSING. Would the proposal: a) Cumulatively exceed official regional or local U U ❑ population projections? () b) Induce substantial growth in an area either directly or i indirectly (e.g.through projects in an undeveloped El Q s� area or extension of major infrastructure)? O c) Displace existing housing,especially affordable ❑ U U housing? () III. GEOPHYSICAL. Would she proposal result in or expose people to potential impacts involving; Ll U a) Seismicity: fauitrupture? () U b) seismicity: ground shaking or liquefaction? O U U U c) ,,cismicity: seiche or tsunami? () U U d) Landslides or mudslides? () e) Erosion,changes in topography or unstable so;I U U U conditions from excavation,grading or fill? O U 0 L `) Subsidence of the land? O U g) Expansive soils? () h) Unique geologic or physical.features?() IV. WATER. Would the proposal result in: a) Changes in absorption rates,drainage patterns,or the 0 rate and amount of surface runoff? O U U h) Exposure of people or property to water related O U U hazards such as flooding? () c) Discharge into surface waters or other alteration Of surface water quality(e.g.temperature,dissolved U U 0 oxygen or turbidity)? () d) Changes in the amount of surface water in any water O body? () - e) Changes it,currents,or the course or direction of 0 water rnuvenents? () f) Change in die quantity of ground we..ers,either through direct additions or withdrawals,or through interception of an aquifer by cuts or excavations?( U g) Altered direction or race of flow of groundwater?( Ll 0 Ll h) impacts to groundwater quality? (} Ll V. AIR QUALITY. Would the proposal a) Violate any air quality standard or contribute to an U J existing or projected air quality violation? () U 0 b) Expose sensitivc receptors to pollutants? () 6 SAUERS �t`)3t NEEF2I^7G Sao 265 SaD4 v-��e++•�'� ••_,� --_ Potentially Potentially Significant Less Than Significant Unless Significant No Issues(and supporting Infotvtation Sources) Impact Mitigated Impact Impact c) Alter air movement,moisture,or temperature,or cause 0 Fj any change in climate? O U O d) Create objectionable odors? O VL TRANSPORTATION/CIRCULATION. Would the proposal result in: a) Increased vehicle trips or traffic congestion? (} ❑ Lj b) H92Rrds to safety from design features(e.g.sharp curves or dangerous intersections)or incompatible uses(e.g, farm equipment)?() c) Inadequate emergency access or access to nearby ❑ uses? () d) Insufficient parking capacity on-site or o(P-site? O ❑ 12 e) Hazards or barriers for pedestrians or bicyclists? () f) Conflicts with adopted policies supporting alterative transportation(e.g_bus turnouts,bicycle racks)? O 0 0 0 g) Rail,waterborne or air traffic impacts? () VII. ,BIOLOGICAL RESOURCES. Would the proposal result in impacts to: a) Endangered,threatened or rare species or their habitat (includ;ng but not limited to plants,fish.insects, 0 animals,and birds)? () (� b) Locally designated species(e.g.heritage trees)? O c) Locally designated natural communities(e.g. oak forest,costal habitat,etc.)? () d) Wedand babirat(e.g.marsh,riparian and vernal pool)? ❑ c) Wildlife dispersal or migration corridors? O VIII. ENERGY AND MINERAL RESOURCES Would the proposal: a) Conflict with adopted energy conservation plans? O 0 0 b) Use non-renewable resources in a wasteful and inefficient manner? () IX. HAZARDS. Would the proposal involve. a) A risk of accidental explosion or release of hazardous substances(ir+eluding,but not limited to. oil, ® Q pesticides,chemicals or radiation)? () b) Possible interference with an emergency response plan 0 ❑ or emergency evacuation plan? () 7 SAUERS ENGINEERING Sam 265 6884 Potentially Potentially Significant Less Than Significant Unless Significant No Issues(and supporting Information Sources) Impact Mitigated Impact Impact c) The creation of any health hazard or potential health ❑ ❑ ❑ hazard? ()d) Exposure of people to existing sources of potential ❑ ❑ ❑ health hazards? () e) Increased fire hazard in areas with flammable brush, ❑ ❑ ❑ ❑ grass,or trees? () X. NOISE. Would the proposal result in a) Increases in existing noise levels? O ❑ ❑ ❑ b) Exposure of people to severe noise levels? O ❑ ❑ XI. PUBLIC SERVICES. Would the proposal have an effect upon, or result in a need for new or altered government services in any of the fallowing areas: ❑ a) Fire protection? O Li ❑❑ ❑ ❑ � b) Police protection? {) ❑ ❑ ❑ c) Schools? () ❑ d) Maintenance of public facilities,including roads? O O ❑ e) Other governmental services? () XIL UTILITIES AND SERVICE SYSTEMS. Would the proposal result in a need for new systems, or substantial alterations to the following utilities: a) Power or natural gas? () ❑ ❑ 0 b) Communications systems? O ❑ ❑ c) Local or regional water treatment or distribution ❑ ❑ facilities? () ❑ d) Sewer or septic tanks?O ❑ ❑ e) Storm water drainage? O 0 Solid waste disposal? () ❑ ❑ ❑ XIIL AESTHETICS. Would the proposal a) Affect a scenic vista or scenic highway?O 0 ❑ ❑ b) Have a demonstrable negative aesthetic effect?O ❑ ❑ ❑ c) Create light or glare?() XIV. CULTURAL RESOURCES. Would the proposal: ❑ ❑ a) Disturb paleontological resources? O 0 b) Disturb archaeological resources? O ❑ 0 ❑ e) Affect historical resources? () d) Have the potential to cause a physical change which ❑ ❑ ❑ would affect unique ethnic culture values?() 8 SAVERS 'cNGi NEEK1Nla ��� -�" �v` - Potentially Potentially significant Less Than ` significant Unless Significant No Issues(and supporting Information Sources) Impact Mitigated Impact Impact e) Restrict existing religious or sacred uses within the ❑ potential impact area?() XV. RECREATION. Would the proposal: a) increase the demand for neighborhood or regional ❑ ❑ (� parks or other rectuational facilities?() f� b) Affect existing recreational opportunities?O XVI.MANDATORY FINDINGS OF SIGNIFICANCE. 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 populaion to drop below self-sustaining levels,tlueaten to eliminate a plant or animal community,reduce the number or resu•iet the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California 0 O 0 history or prehistory'! b) Does the project have the potential to achieve ahort- term,to the disadvantage of long-term,environmental J goals? c) 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 FI probable future projects.) d) Does the project have environmental effects which will cause substantial adverse effects on human 71 beings,either directly or indirectly? XYII.EARLIER ANALYSIS. Earlier analyses may be used where,pursuant to the tiering,program EIR,or other C1EQA process, one or negative or .iOfore effectOs have thisv ase a discuss ncly onlyzed shouldt all earlier ideniify the fo lowing oil attached declaration Section a) Earlier analyses used. Identify earlier analyses and state where they are available for review. b) Impacts adequately addressed. Identify which effects front the above checklist were within the scope of and adequately analyzed by the earlier document. 9 SAUERS ENGINEERING 1a1 c -u-" -- c) Mitigation measures. For effects that are"potentially significant"or"potentially significant unless mitigated", describe the mitigation measures which were incorporated or refined from the earlier document and the extent to which they address site-specific conditions for the project. No earlier analysis were used in preparation of this Initial Study. EXPLANATION OF CHECKLIST ANSWERS A brief explanation is required for all answers except"No Impact"answers that are adequately supported by the information sources a lead agency cites in the parentheses following each question. 1. LAND USE AND PLANNING This project is an augmentation to the existing distribution system for the Glensbire service area. Construction of the booster pump station is a permissible land use for the project property. The project is consistent with general plan designations and zoning of the Town of Truckee. IL POPULATION AND HOUSING The Strand pump station and pipeline construction will be designed to accommodate the continued infill development of the Glenshire service area consistent with the population and housing projections of the Town of Truckee's general plan. 111, GEOPHYSICAL The project will require a modest amount of grading to prepare the pump station building pad and parking area. Pipeline and underground electrical construction will involve excavation and backfill of trenches. The pipeline construction will involve excavation and backfill within existing roads. As is standard with all District construction projects of this type, grading and excavations will 'Include surface restoration either with paving or other permanent erosion control measures. This is considered a less than significant impact. Typical soils in the area of the project site consist of a mixture of sands, gravels,volcanics, and decomposed organic topsoil with underlying volcanic rock such as basalt. These soils are not considered potentially expansive. There are no unique physical or geologic features associated with the project site. IV. WATER There will be a slight increase in the amount of impervious surface as a result of this project including the pump station building and paved area. This is expected to be approximately 1,116 square feet. Drainage will flow from the impervious areas to a detention basin. The detention basin will be sized to accommodate runoff from a 1-hour,20-year storm as defined by the Lahontan Regional Board. This is considered a less than significant impact. The pump station project is intended to facilitate the replacement of local groundwater sources with groundwater sources from the District's main system. Existing wells in the Glensbire area will be taken out of service. There will be no increase in groundwater withdrawal as a result of the project. The project will have no net affect on groundwater. During construction,there is a potential for excavated material to migrate offsite in the event of a rain storm event. Prior to site disturbing activities,the District will prepare a Report of Waste Discharge in compliance with the Lahontan Regional Water Quality Control Board. Best management practices (BMPs)will be incorporated into the project to protect water quality during and after construction. This is considered a potentially significant impact unless mitigated. The following mitigation measures are added to the project to reduce potential impacts to less than significant: 10 SAUERS ENGINEERING SSb 4ts o.., -- --- -- - M-L Temporary BMPs will be incorporated into the project design to be implemented before and during construction. BMPs include preservation of existing vegetation,placement of straw mulch,covering temporary spoils piles to protect from rainfall, and removal of spoils material to permanent locations protected from offsite migration. M-2. Permanent BMPs will include revegetation of exposed soil areas, asphalt pavement on pipeline trenches,pump station access road and parking area, and permanent disposal of surplus excavated material at an acceptable location protected from offsite migration- V. AIR QUALITY There will be no air emissions from the pump station. There may be incidental emissions during construction from contractor's operations including vehicles and mechanical equipment. Construction activities have the potential to generate PM10 emissions through the release of fugitive dust associated with grading and excavation activities. The following mitigation measures are added to the project to reduce potential impacts to less than significant: M-3. Fugitive dust emissions resulting from site clearing and any project improvements shall be minimized at all times utilizing control measures including dust palliative,regularly applied water,graveled or paved haul roads,etc. Access or haul roads adjacent to the project must be treated as necessary to prevent off-site migration and accumulation of dirt,soils, or other materials which can subsequently become entrained in ambient air,either from construction related vehicles or from any vehicle using adjacent affected roads. M-4. When transporting material during site preparation or construction,measures shall be used to prevent materials from spilling or blowing onto street and highways. Earthen materials,if transported, shall be adequately sprayed with water or covered prior to transport onto public roads. Vegetative material shall be tarped as necessary prior to transport. Specific control measures shall be noted on improvement and/or grading plans. VI. TRANSPORTATION/CIRCULATION During construction there will be an increase in vehicle trips to the project site associated with the contractor's activities. This is considered a less than significant impact. Pipeline construction along Donnington Lane and Kent Drive may impact traffic along that road. It is anticipated that pipeline will be constructed within one of the travel lanes allowing at least one lane of the road to remain open. District construction contracts routinely include specifications requiring contractors to prepare traffic control and lane closure plans prior to construction. These plans will be submitted to the Town of Truckee for review and approval through the encroachment permit application process. This is considered a less than significant impact. The project will not have any affect on emergency access,access to nearby uses,or alternative transportation. The project will include parking for District vehicles at the pump station site. VII. BIOLOGICAL RESOURCES Construction of the pump station will take place over a relatively small area, approximately 2,000 square feet. The project site is not considered habitat for threatened or endangered species of plants or animals. The site contains no locally designated species or natural communities. The site is in an upland area containing no wetlands. The project will have no impact on wildlife dispersal or migration. VIll. ENERGY AND MINERAL RESOURCES The pump stations will use electrical energy. Pumps will be chosen which work at high efficiencies under design conditions. 11 SAUERS ENIa1Ntt1't111+ --- - IX. HAZARDS During construction there is a risk of accidental release of hazardous substances such as paint,fuel,or oil from spillage. District construction contracts require the contractor to be prepared for such accidents and provide clean-up which in this case would likely be limited to the paved project site. This is considered a less than significant impact. X. NOISE During construction,there will be an inprease in noise levels associatedgenerator,and compressor. tions This is including operation of mechanical equipment ment such as a backhoe, g considered a less than significant impact. XI. PUBLIC SERVICES This project is based on and consistent with the general plan of the Town of Truckee inclu mg projections for the need for public services. XH. UTILITIES AND SERVICE SYSTEMS the water distribution system by increasing the capacity an The project will result in improvements to reliability of the system. XHL AESTHETICS The pump station site is located along The Strand and will be visible from the street. Building materials and colors will be chosen to complement the station's surroundings. Because of the relatively small size of the building and the choice of materials,this is considered a less than significant impact. XIV. CULTURAL RESOURCES ntial for archaeological and historical resources lit e Given the project's location,there is a pote urce Study prepared by a qualified project area. The District is currently having a Heritage Resoed archaeologist,however,because of snow conditions, a surface survey of the project site is not yet possible. The Heritage Resource Study will be completed prior to construction starting at the site. The following mitigation measures are added to the project: lete the eri M_g. Prior to any ground disturbing activities,A recomrnended mitigationpmeasures shall beResource Study including surface survey. y incorporated into the project. r unusual amounts of stone,bone'or shell are M b. If artifacts un overed during construct on activity,ical or cultural,owork shall be halted and a qualified archaeologist shall be consulted for an on-site review. Mitigation measures, as reccom mend K of the ted he archaeologist and approved by the District in accordance with Appendix Guidelines. shall be implemented prior to recommencement of construCEQA ction activity. If any bone appears to be human, California law mandates that the Nevada County Coroner and the Native American Heritage Commission be contacted. XV. RECREATION The project is based on and consistent with the general plan of the Town of Truckee including projection for needed recreational facilities. XVI. MANDATORY FINDINGS OF SIGNIFICANCE The project will take place on a relatively small site in a residential subdivision and will not affect plant or animal species or habitat or eliminate prehistoric or historic resources. 12 SAUERS ENGINEERING S30 'Gbb bit 4 ' ' _'-- The project achieves both short term and long term environmental goals by increasing water pumping efficiency, avoiding potential shortages in pumping capacity, and allowing the implementation of adopted land use and environmental plans. Public water supply is one of many services needed to allow the continued orderly growth and development of the Truckee area. Issues related to growth and development including intensity, density, location,and timing,among others, are the responsibility of the appropriate planning agency, in this case the Town of Truckee. Similarly any impacts associated with the growth and development of the Truckee area are also the responsibility of the appropriate agencies and are addressed in the various land use and environmental plaits adopted by those agencies. The provision of a public water supply is not considered a significant contribution towards impacts which may be associated with the continued growth and development of the Truckee area as defined by the appropriate planning agency. Implementation of this project will allow the District to continue to provide an adequate public water supply. Provisions of a safe and reliable water supply is considered to have a beneficial effect on human beings. REPORT PREPARATION This Initial Study was prepared under contract with the Truckee Donner Public Utility District by Sauers Engineering, Inc. Principal author was Keith Knibb. Prepared by: :4Date: S' O 3 13 SAUERS ENGINEERING REFERENCES These references are available for review at the Truckee Donner Public Utility District office, 11570 Donner Pass Road,Truckee, California. 1. USGS Mattis Peak Quadrangle,7.5 Minute Series, I Truckee Water System Water Master Plan Update,Truckee Donner Public Utility District,March 2001 3, Negative Declaration and Environmental Initial Study,Truckee Water System Water Master Plan Update,Truckee Donner Public Utility District, March 2001 4. Revised Due Diligence Study Report on the Glenshire Water System,Truckee Donner Public Utility District, August 14, 2001 5. Negative Declaration and Environmental Initial Study for Glenshire Water System Acquisition and Improvements, Truckee Donner Public Utility District,November,2001 14 m N a M _ Glenshire T a 99 r e To oe D ner m m m N r. Project 0 engN'a®0 y TDPUD Office Downtow A�excc w Location T ucke Donne Lake s HamwLaGtirO�Y v T.taws ntr —.. 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