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Home My WebLink About2001-08-15; Planning Commission; ; CUP 99-23/CDP 99-45- CARLSBAD WATER RECYCLING FACILITY" . : ( The -Lty of CARLSBAD Planning Depa.. ... nent ([5'!tf) A REPORT TO THE PLANNING COMMISSION P.C. AGENDA OF: August 15, 2001 Item No.@ Application complete date: July 16, 2001 Project Planner: Elaine Blackburn Project Engineer: Jeremy Riddle SUBJECT: CUP 99-23/CDP 99-45 -CARLSBAD WATER RECYCLING FACILITY - Request for a Conditional Use Permit and a Coastal Development Permit to develop a water recycling facility and flow equalization basins on a site located on the east side of A venida Encinas immediately south of the existing Encina Water Pollution Control Facility and within Local Facilities Management Zone 22. I. RECOMMENDATION That the Planning Commission ADOPT Plahning Commission Resolutions No. 5037 and 5038 APPROVING CUP 99-2~ and CDP 99-45 based upon the findings and subject to the conditions contained therein. - II. INTRODUCTION This project includes an application for a Conditional Use Permit, and a Coastal Development Permit to allow the development of a water recycling facility and flow equalization basins. The proposed project is a part of the Carlsbad Municipal Water District's (CMWD) Water Recycling Master Plan and Encina Wastewater Authority's (EWA) effluent Master Plan. The current project includes only the water recycling facility, flow equalization basins, and related activities to be constructed on property immediately south of the existing Encina Water Pollution Control Facility (EWPCF) site. The requested use is a quasi-governmental/utility use which would be allowed with approval of a Conditional Use Permit. A Coastal Development Permit is also required since the project site is in the Coastal Zone. III. PROJECT DESCRIPTION AND BACKGROUND The project site is a relatively flat site located on the east side of Avenida Encinas immediately south of the existing EWPCF. The site has been farmed in previous years and, thus, was frequently disked. The site does not support any sensitive biological resources. The General Plan designation of the undeveloped portion of the project site is PI/0 and the zoning is P-M/0. The developed portion of the site (the existing Encina Water Pollution Control Facility) is designated U and zoned P-U. The proposed project will function in conjunction with that existing facility. The project site is located in an area surrounded by a mix of land uses. Immediately east of the project site is the freeway. Further east, across the freeway, is residential development. That area has a General Plan designation of RM and is zoned P-C. The properties to the south of the project have General Plan designations of RM/0, TR/RH, and RH and are zoned RD-Mand C-T. Immediately south of the project site is a car dealership (Hoehn Porsche). Southwest of the project site is an apartment complex (part of the Poinsettia Properties Specific Plan). West of the project site (across the railway lines) is a time share development. -( ( CUP 99-23/CDP 99-45 -CA..J.,SBAD WATER RECYCLING FACii:,J. fY August 15, 2001 Pa e2 Project Description The project currently being considered is the construction of the Carlsbad Water Recycling Facility (CWRF) and flow equalization basins. The CWRF is a part of Phase II of the Encina Basin Water Reclamation Program. The Encina Basin Water Reclamation Program Phase II project -will be an integral expansion of th"? existing Phase I system. It will obtain a supply of recycled water from three treatment facilities and supply this water to irrigation customers through a pipeline distribution system containing storage reservoirs and pumping stations. The only part of Phase II currently being considered through these permits is the co:qstruction of the Carlsbad Water Recycling Facility, which includes EWA's flow equalization basins. The maximum capacity of the first phase of the recycled water plant will be 4.0 million gallons per day (MGD). In later phases, the plant will be able to provide up to 16.0 MGD of recycled water. The flow equalization basins will be funded by EWA and CMWD and constructed under a separate contract to be administered by EWA. The proposed project will include a variety ~f components. (A detailed description of the various functional areas is included on the full-size site plan and in the environmentaLdocumenrprepared for the project.) Generally, those components are as follows: ------- Operations Building-This 4,343-square foot building, to be located adjacent to Avenida Encinas, will contain the control room, meeting room, maintenance room, bathrooms, laboratory, plan room, operations room, electrical room, janitor room, and display area. This builcl!ng will be of stucco and will have a medium-brown fayade trimmed in light green and cream colors. The building will incorporate a tile accent in denim blue. The roof will be of metal in a dark forest green. Overlook Platform -The project will include an observation platform which overlooks the EWPCF site. This platform will be used during tours of the facility. The platform will be at the same grade as the adjacent roadway. Recycling Facilities -These facilities include numerous tanks and at-grade basins. These will be used in the filtration, reverse osmosis, and storage processes. The highest tank (the decarbonation tank) will be· 18' high. However, this tank will be relatively small in size, only 7' in diameter. The basins will be at-grade. Pump Stations -One pump station will be located on the new portion of the project site. This 3,600 square foot structure (120x30 feet) will be a maximum of 16' high. It will be made of split-face concrete masonry. It will be located on the interior of the project site. Another pump station will be located on the existing EWPCF site. Recycled Water Storage Basin and Influent Storage Basin-These two basins will consist of open at-grade concrete basins. They will provide storage for a) approximately two million gallons of recycled wate_r and b) storage for influent flow equalization (for EWPCF), respectively. The influent storage basin will be shared by EWA and CMWD. EWA will use the basin during times of high rainfall (when treated flows exceed ocean outfall capacity) and CMWD will use the basin during all other time periods (to regulate the flow through the CWRF facility). ·cUP 99-23/CDP 99-45 -~-~SBAD WATER RECYCLING F.{_ .. LITY August 15, 2001 Pae 3 Future Storage and Equalization Basins -The proposed project calls for several other storage and equalization basins which will not be built immediately. These will be built at a later date as the need arises. Canopies -The treatment areas (the filtration areas and the reverse osmosis areas) will be -covered by canopies. The canopy supports will be of split-face masonry. The canopy covers will be of metal in a dark forest green (the same color as the operations building roof). Off-site improvements are being required in that Avenida Encinas will be widened to meet City standards, including transition work. The developer will install an on-site waterline system for fire protection and potable water use. The site is served by A venida Encinas and all parcels will have direct access to public streets. Potable water service to the project will be provided via a proposed on-site system connected to an existing water main adjacent to Avenida Encinas. Grading for the project will require a Grading Permit. J Background ~------ In May 1990, the CMWD Board of Directors adopted Ordinance No. 31 mandating the use of recycled water wherever feasible in the District. CMWD then began planning the recycled water system, culminating in the development of a report entitled "City of Carlsbad Water Reclamation Master Plan". That report was adopted by the City Council in March 1992. The master plan, divided into five phases, envisioned delivering up to 11,480 acre-feet of recycled water per year with a peak demand of 21.4 MGD of recycled water to the entire City (based upon existing and projected irrigation demands at the time). Phase I of the project was initiated in 1992. The facilities in Phase I consist of: a) two supply sources (Meadowlark Water Reclamation Plant and Gafner Water Reclamation Plant); b) two steel tank recycled water reservoirs (the "Twin D" tanks); c) a pumping station which obtains water from the Meadowlark Plant and pumps the recycled water to the Twin D tanks; and d) transmission pipelines which deliver recycled water to major customers in the southwestern part of the City. Generally, Phase I was funded through a low interest loan from the State Water Resources Control Board and a rebate program from Metropolitan Water District (MWD) and the San Diego County Water Authority. Funding from MWD was obtained through their Local Projects Program, which CMWD later converted to MWD's Local Resources Program (LRP). Phase I began full operation in 1994. By 1997 the demand for recycled water began to exceed the available supply. To make more efficient use of available local water resources the CMWD now proposes to implement Phase II of its recycled water program. In 1996 CMWD began updating the Reclaimed Water Master Plan. They completed this effort in 1997. A report was prepared entitled "Update of the Reclaimed Water Master Plan". This report identified ten possible alternatives for Phase II of the project. These alternatives were based upon an investigation of customer irrigation demands, a determination of options for increasing the treated water supply, locating pipelines, pumping stations, and reservoirs, and reviewing funding alternatives. Alternative 9 of the ten possible alternatives was recommended for implementation in Phase II to increase the recycled water supply from 2.75 MGD to 8.00 MGD, with an average annual demand of 4,480 acre-feet per year or4.00MGD. CUP 99-23/CDP 99-45-C}-._j_,SBAD WATER RECYCLING FAclJ.rY August 15, 2001 Paoe4 In September 1998, CMWD submitted a proposal to MWD's LRP to obtain funding for a portion of the Phase II recycled water system's operation and maintenance costs. In January 1999, MWD submitted a written response indicating a willingness to approve funding. In March 2000, CMWD entered into a contract with MWD for partial funding for this project. CMWD also submitted an application to SWRCB's State Revolving Fund program to obtain a portion of the Phase II project's capital funding through a low interest loan and grant. The application addresses facilities required for Phase II. CMWD, in a cooperative effort with Leucadia County Water District, Olivenhain Municipal Water District, and San Elijo Joint Powers Authority, also applied for Public Law 102-575 Title XVI funding through the Federal Bureau of Reclamation. The Phase II project was combined with projects proposed by the other agencies on the application and contained under the funding title ''North San Diego County Area Water Recycling Project". Under the Reclamation, Recycling and Water Conservation Act of l, 996, the Bureau of Reclamation was authorized to participate in the North San Diego County Area Water Recycling Project at a federal cost-share of up to 25%. An appropriation of $6.5 million has been approved, with. the majority being .. received by the San Elijo Joint Powers Authority. ------ The Encina Wastewater Authority completed studies in 1999 investigating equalization requirements for their ocean outfall. This culminated in a document entitled "Peak Flow Management Plan" that presented a preliminary design for equalization facilities consisting of a pump station to ~onvey secondary treated effluent to an equalization basin during high flow periods. Equalization was determined to be the most feasible and cost effective means to accommodate near-term and future peak flows, which would otheiwise be limited by the ocean outfall capacity. Since a flow equalization basin (and pump station) is required for both the wastewater treatment facility and the water recycling facility under different condition, it was determined that a shared facility would meet the needs of both agencies. IV. ANALYSIS The project is subject to the following regulations and requirements: A. Zoning -Conditional Use regulations, P-M Zone, P-U Zone, Parking, CommercialNisitor-Serving Overlay Zone (Chapters 21.42, 21.34, 21.36, 21.208, and 21.44 of the Carlsbad Municipal Code); B. Coastal Development regulations for the Coastal Agriculture Overlay · Zone, Coastal Resource Protection Overlay Zone (Chapters 21.201, 21.202, and 21.204 of the Carlsbad Municipal Code); C. Growth Management regulations (Chapter 21.90 of the Carlsbad Municipal Code); The recommendation for approval for this project was developed by analyzing the project's consistency with the applicable City regulations and policies. The project's compliance with each of the above regulations is discussed in detail in the sections below. .. - ( . ( CUP 99-23/CDP 99-45 -\..,,~SBAD WATER RECYCLING F A'"' .. LITY August 15, 2001 Paoe 5 A. Zoning -Conditional Uses Regulations, P-M Zone, P-U Zone, Commercial/Visitor- Serving Overlay Zone, and Parking Regulations 1. Conditional Uses Regulations -The City's Conditional Uses Regulations (Chapter 21.42 of the Municipal Code) establishes that public and quasi-public utility facilities may be allowed in all zones, including residential, subject to the approval of a Conditional Use Permit. The proposed use is a quasi-public utility facility. It will function in conjunction "":'ith the existing Encina Wastewater Treatment Facility. Staff believes the findings necessary to support the approval of the CUP can be made, as discussed in Table 1, below. Table 1 -CONDITIONAL USE PERMIT FINDINGS AND RESPONSES FINDING That the requested use is necessa,cy or desirable for the development of the community, is essentially in harmony with the various elements and objectives of the General Plan, including, if applicable, the certified local coastal program, and is not detrimental to existing uses or to uses specifically permitted in the zone in which the proposed use is to be located. That the site for the intended use is adequate in size and shape to accommodate the use. That all of the yards, setbacks, walls, fences,· landscaping, and other features necessary to adjust the requested use to existing or permitted future uses in the neighborhood will be provided and maintained. RESPONSE The project is necessary and desirable for the development of the community in that it will provide non-potable wat~r for use by the residents of the City, thus reducing the region~~_ dependence on imported potable water. The project is also in harmony with the General Plan, since the proposed use is an allowed use on the subject property which has a General Plan designation of PI/0. The use will not be detrimental to existing uses or permitted uses in the area. It will operate in conjunction with the existing water treatment facility and will function in conjunction with that facility, which has not proven to be detrimental to other uses. The proposed use will be small in.scale and properly screened. It will also generate no unusual noise levels and no odors. The intended use can fit within the site while providing all required setbacks and screening. Therefore, the site is adequate in size and shape to accommodate the use. The project has been designed to provide all necessary setbacks as required by the P-M Zone. The project will also incorporate some security fencing ( a 6' -high security fence around the treatment areas). Finally, the project will be fully landscaped. All setbacks will be landscaped as required by the P-M Zone, and the landscaping in the front setback (Avenida Encinas) will be enhanced to ensure adequate screening of the use. ... ( . ( CUP 99-23/CDP 99-45 -CAru...SBAD WATER RECYCLING F ACIL. 1 Y August 15, 2001 Pae 6 That the street system serving the proposed use is adequate to properly handle all traffic generated by the proposed use. The project is located along A venida Encinas, which is a secondary arterial roadway intended to serve up to 20,000 vehicles per day. The proposed project will generate a maximum of 87 ADT, whi~h can easily be accommodated by the existing roadway. The only internal circulation needed for the site will be for employees. That need has been fully accomplished by the internal circulation system designed into the project. Finally, the project will provide all parking required on- site. 2. P-M and P-U Zones As stated in the "Project Description." section of this report (above), the project site is currently zoned P-M (Planned Industrial) and is anticipated to be rezoned to P-U (Public Utility). Therefore, the project design has been reviewed for compliance with both P-M (Chapter 21.34) and P-U (Chapter 21.36) Zone regulations. Tlie project's compltancr--- with both sets of requirements is demonstrated in Table 2, below. Based upon that . analysis, the project meets or exceeds all development standards of both the P-M and the P-U zones. Table 2 -P-M AND P-U ZONE COMPLIANCE STANDARD REQUIRED/ALLOWED PROVIDED Min. Lot Area P-M= 1 ac P-U = 7,500 sf 9 ac ( smallest lot) Max. Lot Coverage P-M=50% P-U=50% 40% Max. Building Height P-M = 35'* P-U = est'd by PDP 21'8" Min. Front Yard P-M = 50' P-U = est' d by PDP 50' Min. Interior Side P-M= 10' Yard P-U = est' d by PDP 10' (landscaped) Min. Rear yard P-M=20' P-U = est'd by PDP 20' (landscaped) * Architectural Pr0Ject1ons allowed The P-M Zone also includes a requirement for provision of an employee eating area. However; the proposed facility will house no employees. It is fully automated. Any attention required by the proposed facility will be provided by employees based at the existing EWPCF. Therefore, no employee eating area is being required for the proposed . facility. (This is consistent with the P-U Zone, since no employee eating area is required in the P-U Zone.) I ( CUP 99-23/CDP 99-45 -Lrtlli,SBAD WATER RECYCLING FAL-iLITY August 15, 2001 Pae 7 3. CommercialNisitor-Serving Overlay Zone The Commercial/Visitor-Serving Overlay Zone (Chapter 21.208) is intended to supplement the underlying zoning in the applicable geographic area by providing additional regulations for commercial/visitor-serving uses. Section 21.208.050 of this ·chapter provides that conditional uses otherwise allowed by underlying zoning designations within the Overlay Zone which are not commercial/visitor-serving uses are not subject to the chapter. Thus, where the underlying zoning authorizes uses which are not commercial/visitor-serving uses, then the Conditional Uses regulation~ apply. That is the case for the proposed project. The underlying zoning (P-M) allows public and quasi- public utility facilities subject to a CUP. Therefore, the requirements of the Commercial/ Visitor-Serving Overlay Zone do not apply to this project. 4. Parking ,i The City's Municipal Code (Section 21.44.030) provides that, where the parking requirement for a use are not specifically defined in the Code, the parking requirements for that use shall be determined by the Planning Commission based upon the "111.ost----- comparable use in the Code. The most comparable use identified in the Code would be a warehouse use. However, there are still substantial differences· between a _ typical industrial warehouse and the proposed facility in that most warehouses do have sonie employees. Since the proposed facility will be fully automated, there will be no employee~ based at the facility. Routine maintenance activities are expected to be performed by employees based atthe existing Encina Wastewater Treatment Facility. The only parking necessary will be a small amount necessary for guests who will be taken on guided tours of the facility. The project design incorporates 12 full-size spaces, 2 handicap spaces, and 1 bus loading/unloading space for these guests. Staff believes this will provide adequate parking for the facility and is recommending that the Planning Commission adopt this number as the required parking for the facility. B. Coastal Development Regulations 1. Mello II Segment The project site is in the Mello II Segment of the Coastal Zone. The project is consistent with all policies and programs of that segment. The site contains no sensitive resources to be preserved and provides no opportunities for coastal shoreline access or coastal recreation. 2. Coastal Agriculture Overlay Zone The project site has been identified in the City's Local Coastal Program as property historically used for agriculture. . However, the site is identified as "non-prime agricultural lands" which can be converted to urban uses by participation in the Agricultural Conversion Mitigation program. A mitigation measure requiring participation in the Conversion Mitigation program was included in the original environmental document (EIA 99-9) for the project. Accordingly, a condition of CUP 99-23ICDP 99-45 -cLsBAD WATER RECYCLING F Ac£ .. -1Y August 15, 2001 Pae 8 approval has been included in the attached Coastal Development Permit resolution of approval requiring payment of the agricultural mitigation fee. 3. Coastal Resource Protection Overlay Zone A Biological Assessment conducte4 for the project site indicates that the site does not support any native vegetation except for a lone Mule Fat shrub and several Brewer's Saltbush along the road (Avenida Encinas). The Mule Fat does not constitute jurisdictional wetlands and is not situated on a drainage of any kind. The ~everal saltbush plants along the roadway are at the edge of an agricultural field and also do not constitute a distinct native vegetation type. In addition, no vernal pool elements were observed on the site although they do occur well off-site to the south at the Poinsettia Train Station and further to the south. The study concludes that the site "is devoid of sensitive biological resources." Therefore, there are no resources to be protected. C. Growth Management The proposed project is located within Local Facilities Management· Zone 22 in the---- Southwest quadrant of the City. The impacts on public facilities created by the project, and its compliance with the adopted performance standards, are summarized in Table 3 below. -Table 3: GROWTH MANAGEMENT COMPLIANCE STANDARD IMPACTS COMPLIANCE City Administration NIA Yes Library NIA Yes Waste Water Treatment NIA Yes Parks NIA Yes Drainage 26.8 CFS Yes Circulation · 87 ADT Yes Fire Station No. 4 Yes Open Space NIA Yes Schools NIA Yes Elementary School Students NIA. NIA Middle School Students NIA NIA Hi2h School Students NIA NIA Sewer Collection System lEDU Yes Water 220GPD Yes V. ENVIRONMENTAL REVIEW On January 25, 2000 City Council adopted Resolution No. 2000-37 approving a Mitigated Negative Declaration for the Encina Basin Water Reclamation Program, Phase II Project (EIA 99-09, CMWD Project No. 98-301). That document included the currently proposed project activities as well as some anticipated later phases and activities. However, a recent review of that document has concluded that some of the mitigation measures required at that time are not CUP 99-23/CDP 99-45-"-'ARLSBAD WATER RECYCLING FA\..:-iLITY August 15, 2001 Paae 9 appropriate or necessary. Therefore, staff has prepared an Addendum to that document pursuant to Section 15074.1 of CEQA. The Addendum is included in this staff report package with the original Mitigated Negative Declaration and EIA Part II. Recirculation of the Mitigated Negative Declaration is not required in this case since the Addendum does not constitute a substantial revision to the original document. In conclusion, the Planning Director has determined that the proposed project is within the scope of the previous environmental document (EIA 99-09) prepared for the Encina Basin Water Reclamation Program Phase II project. ATTACHMENTS: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. EB:mh Planning Commission Resolution No. 5037 (CUP 99-23) Planning Commission Resolution No. 5038 (CDP 99-45) Location Map Background Data Sheet ,i Local Facilities Impact Xssessment Form Disclosure Statement Addendum to Mitigated Negative Declaration (dated August 15, 2001) Mitigated Negative Declaration ( dated December 10, 1999) EIA Part II ( dated December 1, 1999) Full Size Exhibits "A" -"V" dated August 15, 2001 ( CARLSBAD WATER RECYCLING FACILITY CUP 99-23/CDP 99-45 ------ BACKGROUND DATA SHEET CASE NO: CUP 99-23/CDP 99-45 CASE NAME: Carlsbad Water Recycling Facility APPLICANT: Carlsbad Municipal Water District REQUEST AND LOCATION: ~A~W~at=er~R ...... e=c_y __ cl=in_g_F~a-c=il=ity......_ __________ _ LEGAL DESCRIPTION: A portion of Lot "H" of Rancho Agua Hedionda, in the City of Carlsbad, County of San Diego. State of California, according to Map thereof No 823. filed in the County of San Diego; and a portion of fractional section 20 T12S. R4W; and Map No. 2013. in the City of Carlsbad, filed in the County of San Diego, State of California · APN: 214-010-09; 214-030-03: 214-031-09; 214-031-10, 214-031-11. 214-031-12: 214-033-01; 214-034-01; 214-035-01; 214-036-01: 214-051-01: 214-052-01; 214-053-02: 214-054-04; 214- 061-21: 214-062-21: 214-063-21: 214-064-01: 214-065-01 Acres: 41 Proposed No. of Lots/Units: -2 __ GENERAL PLAN AND ZONING Land Use Designation: =--PV=-0=----------------------~"--. ~---. - Density Allowed: ;..;N"'""/ A..;;;.._ ____ _ Existing Zone: =-P-...... Ml=...a::O'------- Density Proposed: ;..;N"'""/ A-=----------- Proposed Zone: Naa.-...::/A-=----------- Surrounding Zoning, General Plan and Land Use: Zoning General Plan Site P-M/0 PVO ---------North P-U u South P-M/0 RM/0; TR/RH; RH East T-C ·TC ---------West T-C TR;RM PUBLIC FACILITIES Current Land Use Undeveloped Water Treatment Facility Car Dealership; Apartments; Various Commercial Uses; 1-5 Highway Railway Line School District: CUSD Water District: CMWD Sewer District: CARLSBAD Equivalent Dwelling Units (Sewer Capacity): ...... 1-=E=D-"U ________________ _ ENVIRONMENT AL IMPACT ASSESSMENT D Negative Declaration, issued ___________________ _ D Certified Environmental Impact Report, dated-------------- ~ Other, compliance with prior environmental document CITY OF CARLSBAD GROWTH MANAGEMENT PROGRAM LOCAL FACILITIES IMPACTS ASSESSMENT FORM (To be Submitted with Development Application) PROJECT IDENTITY AND IMP ACT ASSESSMENT: FILE NAME AND NO: CUP 99-23ICDP 99-45 -Carlsbad Water Recycling Facility LOCAL FACILITY MANAGEMENT ZONE: 22 GENERAL PLAN: ::..:PI/::;..;0:::.--____ _ ZONING:-PM/~O~---------------------~ DEVELOPER'S NAME: Carlsbad Municipal Water District ADDRESS: 5950 El Camino Real PHONE NO.: {760) 438-2722 ASSESSOR'S PARCEL NO.: 214-010-09: 214-030-03: 214-031- 09: 214-031-10, 214-031-11. 214-031-12; 214-033-01: 214-034-01: 214-035-01; 214-036-01: 214-051-01: 214-052-01: 214-053-02; 214-054-04: 214-061-21: 214-062-21: 214-063-21: 214-064-01; 214-065-01 QUANTITY OF LAND USE/DEVELOPMENT (AC., SQ. FT., DU): ___ 41 ........ A"'"""'C _______ _ ESTIMATED COMPLETION DATE:------------------ A. City Administrative Facilities: Demand in Square Footage= NIA B. Library: _Demand in Square Footage= NIA C. Wastewater Treatment Capacity (Calculate with J. Sewer) NIA D. Park: Demand in Acreage = NIA E. Drainage: --Demand in CFS = 26.8 Identify Drainage Basin = Encinas Creek Watershed (Identify master plan facilities on site plan) F. Circulation: Demand in ADT = 87 (Identify Trip Distribution on site plan) G. Fire: Served by Fire Station No. = 4 H. Open Space: Acreage Provided = NIA I. Schools: NIA (Demands to be determined by staff) J. Sewer: Demands in EDU 1 Identify Sub Basin = 3B (Identify trunk line(s) impacted on site plan) K. Water: Demand in GPO = 220 .. ( City of Carlsbad IRFi,1,i•,i·M•Xi•Eilleeii,il DISCLOSURE STATEMENT Applicant's statement or disclosure of certain ownership interests on all applications which will require discretionary action on the part of the City Council or any appointed Board, Commission or Committee. The following information MUST be disclos.ed at the time of application submittal. Your project cannot be reviewed until this information is completed. Please print. Note: Person is defined as "Any individual, firm, co-partnership, joint venture, association, social club, fraternal organization, corporation, estate1 trust, receiver, syndicate, in this and any other county, city and county, city municipality, district or other political subdivision or any other group or combination acting as a unit" Agents may sign this document; however, the legal name and entity of the applicant and property owner must be provided below. •. 1. APPLICANT (Not the applicant's agent) · _ Provide the COMPLETE, LEGAL names and addresses of ALL persons having a financial . interest in the application. If the applicant includes a corporation or partnership, include the names, title, addresses of all individuals owning more than 10% of the shares. IF NO INDIVIDUALS OWN MORE THAN 10% OF THE SHARES, PLEASE INDICATE NON- APPLICABLE (N/ A) IN THE SP ACE BELOW If a publicly-owned corporation. include the names, titles, and addresses of the corporate officers. (A separate page may be attached if necessary.) _ · Person U -;/raw, E. P/umm«-· Corp/Part. ___________ _ Title &1au,,, 6 ·,j<: Faj,t"nac Title ______________ _ Address /635 N«ft4',/ Avy. Address ___________ _ Cet, Is t,4(1 ct, ,7. 9 Zd ,1 8 2. OWNER (Not the owner's agent) Provide the COMPLETE, LEGAL names and addresses of ALL persons having any ownership interest in the property involved. Also, provide the nature of the legal ownership (i.e, partnership, tenants in common, non-profit, corporation, etc.). If the ownership includes a corporation or partnership, include the names, title, addresses of all individuals owning more than 10% of the shares. IF NO INDIVIDUALS OWN MORE THAN 10% OF THE SHARES, PLEASE INDICATE NON-APPLICABLE (N/A) IN THE SPACE BELOW.· If a publiclv- owned corporation, include the names, titles, and addresses of the corporate officers. (A separate page may be attached if necessary.) PersonM,lG.1:\AE;:'-:t:"J-lc.roPsz..? Corp/Part ___________ _ Title Gael:$'-Q'\:is,u?l:V;,~ Title __________ _ Address ??.a, Ps :Ef.at7A 6~ Address _________ _ ~L~~cAq,~'f 1635 Faraday Avenue • Carlsbad, CA 92008-7314 • (760) 602-4600 • FAX (760) 602-8559 @ ( 3. NON-PROFIT OR~.t-•IZATION OR TRUST ( If any person.identified pursuant to (1) or (2) above is a nonprofit or&IJlization or a trust, list the· names and addresses of~ person serving as an officer or director of the non-profit organization or as trustee or beneficiary of the. Non Profit/Trust. ________ _ Non Profit/Trust. ______________ _ Title. ____________ _ Title. __________________ _ Address·------------~ Address. ________________ ~ 4. Have you had more than $250 worth of business transacted with any member of City staff, Boards, Commissions, Committees and/or Council within the past twelve (12) months? D Yes D No If yes, please indicate person(s):. _________________ _ NOTE: Attach additional sheets if necessary. ,i I certify that all the above information is true and correct to the best of my knowledge. -----. - Signature of owner/date Signature of applicant/date Print or type name of owner Print or type name of applicant Signature of owner/applicant's agent if applicable/date Print or type name of owner/applicant's agent H:AOMIN\COUNTER\OISCLOSURE STATEMENT 5/98 Page 2 of 2 ( ' City of Carlsbad IQFl,iel•,i·l•ID·tlii,,14,11 DISCLOSURE STATEMENT- Applicant's statement or disclosure of certain ownership interests on all applications which will require discretionary action on the part of the City Council or any appointed Board, Commission or Committee. The following information MUST be disclosed at the time of application submittal. Your project cannot be reviewed until this information is completed. Please print. Note: Person is defmed as "Any individual, firm, co-partnership, joint venture, association, social club, fraternal organization, corporation, estate, trust, receiver, syndicate, in this and any other county, city and county, city municipality, district or other political subdivision or any other group or combination acting as a unit." Agents may sign this document; however, the legal name and entity of the applicant and property owner must be provided below. 1. 2. APPLICANT (Not the applicant's agent) . Provide the COMPLETE, LEGAL names and addresses of ALL persons ha_ving a flna~-- interest in the application. If the applicant includes a corporation or partnership, include the · names, title, addresses of all individuals owning more than 10% of the shares. IF NO INDIVIDUALS OWN MORE 1HAN 10% OF THE SHARES, PLEASE INDICATE NON- APPLICABLE (N/A) IN THE SPACE BELOW If a publicly-owned corporation, include the names, titles, and addresses of the corporate officers. (A separate page may be attached if necessary_.) Person{{J·(/~ EFfvm,;tr- Titl~ ~ !'%:: . Addre~c;:~~ . ~//sOt:rct; t',4. 92PII g OWNER (Not the owner's agent) Corp/Part ____________ _ Title ______________ _ Address ____________ _ Provide the COMPLETE, LEGAL names and addresses of ALL persons having any ownership interest in the property involved. Also, provide the nature of the legal ownership (i.e, partnership, tenants in common, non-profit, corporation, etc.). If the ownership includes a corporation or partnership, include the names, title, addresses of all individuals owning more than 10% of the shares. IF NO INDIVIDUALS OWN MORE THAN 10% OF THE SHARES, PLEASE INDICATE NON-APPLICABLE (N/A) IN THE SPACE BELOW. If a publicly- owned corporation, include the names, titles, and addresses of the corporate officers. (A separate page may be attached if necessary.) Corp/Part ________________ __ Title ______________ _ Address ____________ _ 1635 Faraday Avenue• Carlsbad, CA 92008-7314 • (760) 602-4600 • FAX (760) 602-8559 @ ( 3. NON-PROFIT Ok~ .0:ZATION OR TRUST If any person identified pursuant to (1) or (2) above is a nonprofit organization or a trust, list the names and addresses of~ person serving as an officer or director of the non-profit organization or as trustee or beneficiary of the. Non Profit/Trust. ________ _ Non Profit/Trust __________ _ Title ----------Title ---------------Address __________ _ Address. _____________ _ 4. Have you had more than $250 worth of business transacted with any member of City staff, Boards, Commissions, Committees and/or Council within the past twelve ( 12) months? D Yes D No If yes, please indicate person(s): _____________ _ NOTE: Attach additional sheets if necessary . . i I certify that all the above information is true and correct.to the best of my knowledge. -----. - Signature of owner/date Signature of applicant/date Print or type name-of owner Print or type name of applicant Signature of owner/applicant's agent if applicable/date Print or type name of owner/applicant's agent H:ADMIN\COUNTER\OISCLOSURE STATEMENT 5/98 Page 2 of 2 I I i. I' ,! iji ![ /1! p i' Ir ,k 11: 1: I I. ! AUGUST 15, 2001 ADDENDUM TO EIA 99-09 MITIGATED NEGATIVE DECLARATION FOR EN CINA BASIN WATER RECLAMATION PROGRAM PHASE II The mitigation plan for the Encina Basin Water Reclamation Program, Phase II Project (EIA 99- 09, CMWD Project No. 98-301) included numerous mitigation measures. Some related to enhanc~d landscaping and other requirements, which remain pertinent and appropriate to the project. A few of the mitigation measures, however, were simply restatements of current Municipal Code requirements relating to the necessity of obtaining appropriate land use permits for the project. The Planning Director has reviewed those measures and believes that those specific mitigation measures should be deleted from the project's mitigation plan· and mitigation monitoring report. The requirement for obtaining land use permits, and the exact nature of the permits to be obtained, is stated in the City's Municipal Code. Those Municipal Code requirements which apply to the proposed project would apply independently of the any CEQA requirements and/or any mitigation plan. Further, it is possible that the Municipal Code may be amended over time, thus altering the requirements for specific permits. Inclusion of specific Code language regarding permit requirements in the mitigation plan could lead to conflicts in the future and to unenforceable mitigation measures .. CEQA Section 15074.1 addresses the process necessary to substitute or delefe m1t1gat1on · - measures in a proposed mitigated negative declaration. This section requires that the City do several things. a) The City must hold a public hearing (which can be combined with the public hearing for the-project). _ b) The City must adopt a written finding that the new measure is equivalent or more effective than the original measure and will not, itself, cause any potentially significant effect on the environment. c) No recirculation of the Negative Declaration is required when the new mitigation measure is made a condition of or otherwise incorporated into the project. d) "Equivalent or more effective" means that the new measure(s) will avoid or reduce the significant effect to at least the same degree as, or to a greater degree than, the original measure and will create no more adverse effects of its own that would have the original measure. Pursuant to this section of CEQA, the City proposes to delete from the approved Mitigated Negative Declaration for EIA 99-09 the following mitigation measures: 1. the mitigation measure requiring that the applicant or their designee submit applications for a General Plan amendment and a zone change; 2. the mitigation measure requiring that the applicant or their designee submit an application to amend the City's Local Coastal Program; 3. the mitigation measure requiring that the applicant or their designee submit an application for a Precise Development Plan, Conditional Use Permit, and Coastal Development Permit; and, 4. the mitigation measure requiring compliance with all applicable standards and requirements of the Engineering, Building and Safety, and Fire Protection Service Divisions. -1- ( The City will hold a public hearing on this matter ( combined with the project public hearing). A finding that the new measure is equivalent or more effective than the original measure and will not, itself, cause any potentially significant effect on the environment will be included in the approving documents for the project. No new mitigation is proposed or required, and thus cannot be made a condition of the project. However, the obtaining of appropriate permits is require4 of the project applicant. This requirement is incorporated into the project. Therefore, no recirculation of the environmental document is required .. Finally, deletion of these measures will in no way reduce the original mitigation and will not create any additional adverse environmental effects. Therefore, the remaining mitigation measures will continue to be equivalent to the originally approved measures. ,i' -----. - -2- ( City of Carlsbad · •A6 11ihhl·l•Ji·Fllieel§,II MITIGATED NEGATIVE DECLARATION Project Address/Location: City wide. More specifically, the water recycling plant site is adjacent to, and south of, the existing Encina Waste Water Treatment Plant on Encina Ave., north of Poinsettia Lane. The pump station sites are 1) on the east side of El Camino Real, south of Palomar Airport Road: 2) at the existing water tank site on the south side of the planned extension of Poinsettia Lane, east of Black Rail Road; and 3) along an unpaved utility access road, just east of Calavera Lake. The Mahr reservoir site is off Rancho Santa Fe Road, north of Denning Drive. ~ater transmission pipelines are proposed in various, existing street rights of way or utility easements. Project Description: Environmental certification for Phase II of the Encina Basin Water Reclamation Program which consists of the construction and operation of a new water recycling plant, improvements to an existing water treatment faoility and reservoir site, 3 off-site pump stations, and approximately 10 miles. of new water transmission pipelines. The project entitlements which include a General Plan Amendment, Zone Change, Local Coastal Plan Amendment, Coastal Developmeni-Permit,-· - Precise · Development Plan, and Conditional Use Permit are to be considered at additional, future public hearings in the Spring and Summer 2000. The City of Carlsbad has conducted an environmental review of the above described project pursuant to the Guidelines for Implementation of the California Environmental Quality Act and the Environmental Protection Ordinance of the City of Carlsbad. As a result of said review, the initial study (EIA Part 2) identified potentially significant effects on the environment, but (1) revisions in the project plans or proposals made by, or agreed to by, the applicant before the proposed negative declaration and initial study are released for public review would avoid the effects or mitigate the effects to a point where clearly no significant effect on the environment would occur, and (2) there is no substantial evidence in light of the whole record before the City that the project "as revised" may have a significant effect on the environment. Therefore, a Mitigated Negative Declaration is hereby issued for the subject project. Justification for this action is on file in the Planning Department. A copy of the Mitigated Negative Declaration with supportive documents is on file in the Planning Department, 2075 Las Palmas Drive, Carlsbad, California 92009. Comments from the.public are invited. Please submit comments in writing to the Planning Department within 30 days of date of issuance. If you have any questions, please call Jason Martin in the Planning Department at (760) 438-1161, extension 4515. DATED: December 10, 1999 CASE NO: EIA 99-09 CASE NAME: Encina Basin Water Reclamation Program Phase II PUBLISH DATE: December 10, 1999 Planning Director 2075 Las Palmas Dr. • Carlsbad, CA 92009-1576 • (760) 438-1161 • FAX (760) 438-0894 @ ( ENVIRONMENTAL IMPACT ASSESSMENT FORM -PART n BACK.GROUND 1. ~ASE NAME: Encina Basin Water Reclamation Program Phase II 2.· APPLICANT: Carlsbad Municipal Water District · CASE NO: EIA 99-09 DATE: December 1, 1999 3. ADDRESS AND PHONE NUMBER OF APPLICANT: 5950 El Camino Real, Carlsbad, CA 4. DATE EIA FORM PART I SUBMITTED: _______________ _ 5. PROJECT DESCRIPTION: In 1992 the Carlsbad City Council adopted the City of Carlsbad Reclaimed Water Master Plan, which consists of 5 implementation phases. Phase I was evaluated under previously prepared and certified environmental doctnnents, has been constructed, and began.full operation in: 1994. Phase I generally involved establishment of components of the Meadowlark and Gafner water recycling facilities; conversion of two, existing reservoirs '• from potable water to recycled water · storage; construction of a pwnping station; and -installatit>n or--- transmission pipelines. Phase II, referred to as the· Encina Basin Water Reclamation Program Phase II, is an integral expansion of the existing Phase I facilities and involves the following major components: • Construction of a new advanced tertiary water recycling plant, the Carlsbad Water Recycling Facility (CWRF), with a capacity of 5 million gallons/day (MGD) on the vacant site adjacent to, and south ot: the existing Encina Water Treatment Plant The project/site layout has been designed to accormnodatc an expansion to 16 MGD. • Construction of three (3) booster pwnping stations located: in the southeast section of the Calavera Hills cormnunity, near Lake Calavera; at the existing ''Twin D" water tank site near the intersection of Poinsettia Lane and Black Rail Road; and on the east side of El Camino Real just south of the Palomar Airport Road intersection. • Upgrades and other site improvements to the existing Mahr Reservoir facility. • Installation of minor improvements at the existing Encina Water Treatment Plant which are associated with the water recycling program. • Installation of a combined total of approximately 10 miles of new recycled water transmission pipelines at various locations throughout the City. Proceedurally and in order to obtain full entitlement, the project requires the following discretionary actions: a General Plan (GP) amendment, a Local Coastal Plan (LCP) amendment, a zone change, a Precise Development Plan (PDP) amendment, a Coastal Development Permit (CDP), and a Conditional Use Permit (CUP). The Carlsbad Planning Commission will be reviewing the project and making a recormnendation to the Carlsbad City Council. California Coastal Commission (CCC) review will be required for the LCP amendment. These discretionary actions/project entitlements are scheduled to occur in the spring and summ~ of the year 2000. At this time, however, CMWD is interested in securing participation in a Metropolitan Water District (MWD) rebate program, which requires an executed 1 Rev. 03/28/96 · ( executed agreement and completed environmental analysis on Phase II in early Year 2000. Therefore. the environmental analysis has been completed in advance of the various discretionary actions/project entitlements. A more detailed project description is included in the Discussion of Environmental Evaluation section. SUMMARY OF ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED: The summary of 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 Impact Unless Mitigation Incorporated" as indicated by the checklist on the following pages. IZ! Land Use and Planning 0 Population and Housing D Geological Problems D Water D Air Quality D Transportation/Circulation IZl Biological Resources D Public Services 0 Utilities & Service Systems D Energy & Mineral Resources IZl Aesthetics D Noise IZ! Cultural Resources D Recreation D Mandatory Findings of Significance 2 Rev. 03/28/96 ( DETERMINATION. (To be completed by the Lead Agency) / { D I find that the proposed project COULD NOT have a significant effect on the environment. and a NEGATIVE DECLARATION will be prepared. C8:J I find that although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because the mitigation measures described on an attached sheet have been added to the project. A MITIGATED NEGATIVE DECLARATION -will be prepared. D I find that the proposed project MAY have a significant effect on the environment, and an ENVIRONMENT AL IMP ACT REPORT is required. D I find that the proposed project MAY have significant effect(s) on the environment, but at least one potentially significant effect I) 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. An EIR/Neg Dec is required, but it must analyze only the effects that remain to be addressed . ... D 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 Master Environmental Impact Review -(MEIR 93-0fy---- pursuant to applicable standards and (b) have been voided or mitigated pursuant to that earlier Master Environmental Review (MEIR 93-01), including revisions or mitigation measures that are imposed upon the proposed project. Therefore, a Notice of Prior Compliance has been prepared. Date Date 3 Rev. 03/28/96 / ENVIRONMENTAL IMPA~ ,:s STATE CEQA GUIDELINES, Chapter 3, Article 5, Section 15063 requires that the City conduct an Environmental Impact Assessment to determine if a project may have a significant effect on the environment. The Environmental Impact Assessment appears in the following pages in the form of a checklist. This checklist identifies any physical, biological and human factors that might be impacted by the proposed project and provides the City with information to use as the basis for deciding whether to prepare an Environmental Impact Report (EIR), Negative Declaration, or to rely on a previously approved EIR or Negative Declaration. • · A brief explanation is required for an answers except "No Impact" answers that are adequately supported by an information source cited 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. A "No Impact" answer should be explained when there is no source document to refer to, or it is based on project-specific factors · as well as general standards. • "Less Than Significant Impact" applies where there is supporting evidence that the potential impact is not adversely significant, and the impact does not exceed adopted general standards and policies. . .. • "Potentially Significant Unless Mitigation Incorporated" applies where the incofP-oration of mitigation measures has reduced an effect from "Potentially Significant Impact" to a "Less Than Significant Impact." The developer must agree to the mitigation, and the City must descnoe tne-· - mitigation measures, and briefly explain how they reduce the effect to a less than significant level. • "Potentially Significant Impact" is appropriate if there is substantial evidence that an effect is • • significant: · Based on an "EIA-Part II", if a proposed project could have a potentially significant effect on the environment, but all potentially significant effects-(a) have been analyzed adequately in an earlier EIR or Mitigated Negative Declaration pursuant to applicable standards and (b) have been avoided or mitigated pursuant to that earlier EIR or Mitigated Negative Declaration, including revisions or mitigation measures that are imposed upon the proposed project, and none of the circumstances requiring a supplement to or supplemental EIR are present and all the mitigation measures required by the prior environmental document have been incorporated into this project, then no additional environmental document is required (Prior Compliance). When "Potentially Significant Impact" is checked the project is not necessarily required to prepare an EIR if the significant effect has been analyzed adequately in an earlier EIR pursuant to applicable standards and the effect will be mitigated, or a "Statement of Overriding Considerations" has been made pursuant to that earlier EIR. • A Negative Declaration may be prepared if the City perceives no substantial evidence that the project or any of its aspects may cause a significant effect on the environment. 4 Rev. 03/28/96 ( . ( • If there are one or more potentially significant effects, the City may avoid preparing an EIR it there are mitigation measures to clearly reduce impacts to less than significant. and those mitigation measures are agreed to by the developer prior to public review. In this case. the appropriate "Potentially Significant Impact Unless Mitigation Incorporated" may be checked and a Mitigated Negative Declaration may be prepared. • An EIR must be prepared if "Potentially Significant Impact" is checked, and including but not limited to the following circumstances: (1) the potentially significant effect has not been . discussed or mitigated in an Earlier EIR pursuant to applicable standards, and the developer does not agree to mitigation measures that reduce the impact to less than significant; (2) a "Statement of Overriding Considerations" for. the significant impact has not been made pursuant to an earlier EIR; (3) proposed mitigation measures do not reduce the impact to less than significant, or; (4) through the EIA-Part II analysis. it is not possible to determine the level of ~ignificance for a potentially adverse effect, or determine the effectiveness of a mitigation measure in reducing a potentially significant effect to below a level of significance. A discussion of potential impacts and the proposed mitigation measures appears at the end of the form under DISCUSSION OF ENVIRQN'MBNTAL EVALUATION. Particular attention should be given to discussing mitigation for impacts which would otherwise be determined significant. ,i' -------. - 5 Rev. 03/28/96 / ! Issues (and Supporting Information Sources). I. LAND USE AND PLANNING. Would the proposal:. a) Conflict with general plan designation or zoning? (Source #1:Pgs 5.6-1 -5.6-18, #7) b) Conflict with applicable environmental plans or policies adopted by agencies with jurisdiction · over the project? (#1:Pgs 5.6-1 -5.6-1~, #7) c) Be incompatible with existing land use in the vicinity? (#1:Pgs 5.6-1 -5.6-18, #7, #15) d) Affect agricultural resources or operations (e.g. impacts to soils or farmlands, or impacts from incompatible land uses)? (#1:Pgs 5.6-1 -5.6-18, #7) e) Disrupt or divide the physical arrangement of an established community (including a low-income or minority community) ? (#1:Pgs 5.6-1 -5.6-18, #7) i·· II. POPULATION AND HOUSING. Would the proposal: a) Cumulatively exceed official regional or local population projections? (#1:Pgs 5.5-1 -5.5-6) b) Induce substantial growth in an area either directly or indirectly ( e.g. through projects in an undeveloped area or extension of major infrastructure)? (#1:Pgs 5.5-1 -5.5-6,2, #10, #11) c) Displace existing housing, especially affordable housing? (#1:Pgs 5.5-1 -5.5-6) III. GEOLOGIC PROBLEMS. Would the proposal result in or expose people to potential impacts involving: a) Fault rupture? (#1:Pgs 5.1~1 -5.1-15, #2, #4, #6, #7,#8,#13,#14,#15) b) Seismic ground shaking? (#1:Pgs 5.1-1 -5.1-15, #2.#4,#6,#8,#13,#14,#15) c) Seismic ground failure, including liquefaction? (#1:Pgs 5.1-1 -5.1.15, #2, #4, #5, #6, #8, #13, #14) d) Seiche, tsunami, or volcanic hazard? (#1:Pgs 5.1- 1 -5.1-15, #2, #8, #15) e) Landslides or mudflows? (#1:Pgs 5.1-1 -5.1-15, #4,#8,#12,#13,#14) f) Erosion, changes in topography or unstable soil conditions from excavation, grading, or fill? (#1:Pgs 5.1-1 -5.1-15, #3, #4, #6, #7, #8, #13, #14) g) Subsidence of the land? (#1:Pgs 5.1-1 -5.1-15, #2,#3,#4,#6,#8,#13,#l4) h) Expansive soils? (#1:Pgs 5.1-J -5.1-15, #2, #3, #4,#6,#8,#13,#14) 6 Potentially Significant Impact D D D D D D D D D D D D D D D D . ,, Potentially Significant Unless Mitigation Incorporated D D D D D D D D D D D D Less Than Significant Impact D D D D D D 181 D D 181 181 D 181 No . Impact D D D D -----,-- 181 D D 181 D D 181 D Rev. 03/28/96 ( Issues (and Supporting Infomtu1on Sources). i) Unique geologic or physical features? (#1:Pgs 5.1-1 -5.1-15, #2, #3, #4, #6, #8, #13, #14) . IV. WATER. Would the proposal result in: a) Changes in absorption rates, drainage patterns, or the rate and amount of surface runoff? (#1:Pgs 5.2-1 -5 .. 2-11, #5) b) Exposure of people or property to water related hazards such as flooding? (#1:Pgs 5.2-1 -5 .. 2-11, #12) c) Discharge into surface waters or other alteration of surface water quality (e.g. temperature, dissolved oxygen or turbidity)? (#1:Pgs 5.2-1 - 5 .. 2-11) d) Changes in the amount of surface water in any . water body? (#1:Pgs 5.2-1 -5 .. 2-11, #10) e) Changes in currents, or the course or direction of water movements? (#1:Pgs 5.2-1-5 .. 2-11) f) Changes in the quantity of ground waters; either through direct additions or withdrawals, or through interception of an aquifer by cuts or excavations or through substantial loss of groundwater recharge capability? (#1:Pgs 5.2-1 - 5 .. 2-11) g) Altered direction or rate of flow of groundwater? (#1:Pgs 5.2-1 - 5 .. 2-11) h) Impacts to groundwater quality? (#1 :Pgs 5.2-1 - 5 .. 2-11, #9) i) Substantial reduction in the amount of groundwater otherwise available for public water supplies? (#1:Pgs 5.2-1 -5 .. 2-11, #9) V. AIR QUALITY. Would the proposal: a) Violate any air quality standard or contribute to an existing or projected air quality violation? (#1:Pgs 5.3-1 -5.3-12) b) Expose sensitive receptors to pollutants? (#1:Pgs 5.3-1 -5.3-12) c) Alter air movement, moisture, or temperature, or cause any change in climate? (#1:Pgs 5.3-1 -5.3- 12) d) Create objectionable odors? (#1:Pgs 5.3-1 -5.3- 12) VI. TRANSPORTATION/CIRCULATION. Would the proposal result in: a) Increased vehicle trips or traffic congestion? (#1:Pgs 5.7-1 -5.7.22, #15) 7 Potentially Significant Impact D D D D D D D D D D D D D D D ·, _.entially Significant Unless Mitigation Incorporated D D D D D D D D D D D D D D D Less Than No Significant Impact Impact D D 181 D ..-.~ ----- D 181 D 181 D 181 D 181 D D 181 D 0 Rev. 03/28/96 Issues (and Supporting Infd. •• .ation Sources). b) Hazards to safety from design features (e.g. sharp curves or dangerous intersections) or incompatible uses (e.g. farm equipment)? (#1:Pgs 5.7-1 -5.7.22) c) Inadequate emergency access or access to nearby uses? (#1:Pgs 5.7-1 -5.7.22) d) · Insufficient parking capacity on-site _or off-site? (#1:Pgs 5.7-1 -5.7.22, #12) e) Hazards or barriers for pedestrians or bicyclists? (#1:Pgs 5.7-1 -5.7.22) f) Conflicts with adopted policies supporting alternative transportation ( e.g. bus turnouts, bicycle racks)? (#1:Pgs 5.7-1 -5.7.22) g) Rail, waterborne or air traffic impacts? (#1:Pgs 5.7-1 -5.7.22) VII. BIOLOGICAL RESOURCES. Would the proposal result in impacts to: a) Endangered, threatened or rare species ot their habitats (including but not limited to plants, fish, insects, animals, and birds)? (#1:Pgs 5A-1 -5.4- 24) b) Locally designated species (e.g. heritage trees)? (#1:Pgs 5.4-1 -5.4-2) c) Locally designated natural communities ( e.g. oak forest, coastal habitat, etc.)? (#l:Pgs....5.4-1 -5.4- 24) d) Wetland habitat (e.g. marsh, riparian and vernal pool)? (#1:Pgs 5.4-1 -5.4-24) e) Wildlife dispersal or migration corridors? (#1:Pgs 5.4-1 -5.4-24) VIII. ENERGY AND MINERAL RESOURCES. Would the proposal: a) Conflict with adopted energy conservation plans? (#1:Pgs 5.12.1-1 -5.12.1-5 & 5.13pl -5.13-9) b) Use non-renewable resources in a wasteful and inefficient manner? (#1:Pgs 5.12.1_-l -5.12.1-5 & 5.13-1 -5.13-9) c) Result in the loss of availability of a known mineral resource that would be of future value to the region and the residents of the State? (#1 :Pgs 5.12.1-1 -5.12.1-5 & 5.13-1 -5.13-9) IX. HAZARDS. Would the proposal involve: a) A risk of accidental explosion or release of hazardous substances (including, but not limited to: oil, pesticides, chemicals .or radiation)? (#1:Pgs 5.10.1-1 -5.10.1-5, #15) 8 Potentially Significant Impact D D D D D D D D D D D D D D --c'otentially Significant Unless Mitigation Incorporated D D D D D D D 181 D D D D D Less Than Significant Impact D 181 D 181 D D D D D D D D D D D No Impact· D [81 D [81 D ~ ----- D Rev. 03/28/96 ! Issues (and Supporting Infoni.1cu1on Sources). b) Possible interference with an emergency response plan or emergency evacuation plan? (#1:Pgs 5.10.1-1 -5.10.1-5) c) The creation of any health hazard or potential health hazards? (#1:Pgs 5.10.1-1 -5.10.1-5) d) fatposure of people to existing sources of -potential health hazards? (#1:Pgs. 5.10.1-1 - 5.10.1-5, #12) e) Increase fire hazard in areas with flammable brush, grass, or trees? (#1:Pgs 5.10.1-1 -5.10.1-5) X. NOISE. Would the proposal result in: a) Increases in existing noise levels? (#1:Pgs 5.9-1 - 5.9-15) b) Exposure of people to severe noise levels? (#1:Pgs 5.9-1 -5.9-15) 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 following areas: a) Fire protection? (#1:Pgs 5.12.5-1 -5.12.5-6) b) Police protection? (#1:Pgs 5.12.6-1 -5.12.6-4) c) Schools? (#1:Pgs 5.12.7.1 -5.12.7-5) d) Maintenance of public facilities, including roads? (#1:Pgs 5.-12.1-1 -5.12.8-7) e) Other governmental services? (#1:Pgs 5.12.1-1 - 5.12.8-7) XII. UTILITIES AND SERVICES SYSTEMS. Would the proposal result in a need for new systems or supplies, or substantial alterations to the following utilities: a) Power or natural gas? (#1:Pgs 5.12.1-1 -5.12.1-5 & 5.13-1 -5.13-9, #10, #11) b) Communications systems? (#1,Pgs 5.12.1-1 - 5.12.8-7, #10, #11) c) Local or regional water treatment or distribution facilities? (#1:Pgs 5.12.2-1 -5.12.3-7, #10, #11) d) Sewer or septic tanks? (#1:Pgs 5.12.3-1 -5.12.3- 7) · e) Storm water drainage? (#1:Pg 5.2-8) f) Solid waste disposal? (#1:Pgs 5.12.4-1 -5.12.4-3) g) Local or regional water supplies? (#1 :Pgs 5 .12.2-1 -5.12.3-7) XIII. AESTHETICS. Would the proposal: a) Affect a scenic or vista or scenic highway? (#1:Pgs 5.11-1 -5.11-5, #15) b) . Have a demonstrate negative aesthetic effect? (#1:Pgs 5.11-1 -5.11-5, #15) 9 Potentially Significant . Impact D D D D D D D D D D D D D D D D D D D D / ( ·a11 -... __ ,enn y Significant Unless Mitigation Incorporated D D D D D D D D D D D D D D D D D ~ Less Than Significant Impact D D D D D D D D D D D D D D D D D D No Impact D 181 D D -· --~- 181 D Rev. 03/28/96 I Issues (and Supporting Infe, •. .,.,,ation Sources). c) Create light or glare? ( # 1 :Pgs 5 .11-1 -5 .11-5) XIV. CULTURAL RESOURCES. Would the proposal: a) Disturb paleontological resources? (#1:Pgs 5.8-1 - 5.8-10, #10, #11) b) Disturb archaeological resources? (#1:Pgs 5.8-1 - -5.8-10, #2, #10, #11) c) Affect historical resources? (#1:Pgs 5.8-1 -5.8- 10, #10, #11) d) Have the potential to cause a physical change which would affect unique ethnic cultural values? (#1:Pgs 5.8-1 -5.8-10, #2) e) Restrict existing religious or sacred uses within the potential impact area? (#1:Pgs 5.8-1 -5.8-10) xv. a) RECREATIONAL. Would the proposal: Increase the demand for neighborhoo<!,,or regional parks or other recreational facilities? (# 1 :Pgs 5.12.8-1 -5.12.8-7) b) Affect ex1stmg recreational opportunities? (#1:Pgs 5.12.8-1 -5.12.8-7) XVI. MANDATORY SIGNIFICANCE. FINDINGS OF 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 the substantial adverse effects on human beings, either directly or indirectly? 10 I Potentially .. -lotentially Less Than No Significant Significant Significant lmpac~ Impact Unless Impact D D D D D D D D D D D Mitigation Incorporated D D 181 D D D D D D ~ D D D D D -D D D D D D D 181 ~ D D Rev. 03/28/96 XVIl. EARLIER ANALYSES. Earlier analyses may be used where, pursuant to the tiering, program EIR, or other CEQA process, one or more effects have been adequately analyzed in an earlier EIR or negative declaration. Section 15063(c)(3)(D). In this case a discussion should identify the following on attached sheets: a) Earlier analyses used. Identify earlier analyses and state where they are available for review. b) Impacts adequately addressed. Identify which effects from the above checklist were within the scope of and adequately analyzed in an earlier document pursuant to applicable legal standards, and state whether such effects were addressed by mitigation measures based on the earlier analysis. c) Mitigation measures. For effects that are "Less than Significant with Mitigation Incorporated," 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. .i --~--- 11 Rev. 03/28/96 DISCUSSION OF ENVIRONMENTAL EVALUATION I. BACKGROUND AND PROJECT DESCRIPTION The Carlsbad Municipal Water District (CMWD) is planning an expansion to the City's existing reclaimed, or recycled, water program which is entitled the "Encina Basin Water Reclamation Program Phase II". An overview of the various institutional arrangements affecting the project, a background of the planning process, and a description of Phase I has been included for background. A detailed project description of Phase II, including an summary of technical processes as well as physical project components, is provided later in this section . Institutional Overview CMWD is a subsidiary agency of the City of Carlsbad, and the City Council of Carlsbad serves as its Board of Directors. CMWD provides all planning, construction, operation and maintenance of the recycled water program. CMWD provides potable water, recycled water, and sewer services within the City of Carlsbad. Each of these services has a separate service area boundary, and they are not contiguous. The recycled water service area includes the City limits of Carlsbad consisting of approximately 24,788 acres (38.73 square miles) as shown on Figure 1 Within CMWD, potable water is supplied exclusively through an imported water supply because local ground and surface water is of a poor quality (i.e. high salt content) and inadequate to meet current demands. The CMWD receives imported water via aqueducts operated by the Metropolitan Water District (MWD) and the San Diego County Water Authority. The imported water consists of a blend of Colorado River Water and Statc-,-- Project Water. Before delivery to CMWD, the imported water is treated at MWD's Skinner Filtration Plant located near the City of Temecula, in Riverside County. Wastewater treatment within Carlsbad is handled at three separate treatment facilities. The largest treatment facility, having a capacity of 36 million gallons per day (mgd), is the Encina Water Pollution Control Facility (EWPCF), which is owned and operated by the.Encina Wastewater Authority -a joint powers agency of which the City of Carlsbad is a member. The second largest wastewater treatment facility is the Meadowlark Water Reclamation Plant (MWRP) having a capacity of 2.0 mgd, which is owned and operated by the Vallecitos Water District The third treatment facility is the Gafner Water Reclamation Plant having a capacity of 0.75 mgd and owned and operated by the Leucadia County Water District (LCWD). In 1999, LCWD ceased operation of the wastewater treatment portion of the plant and now pumps secondary treated effluent from the EWPCF to the filters at the Gafner Water Reclamation Plant to produce tertiary treated effluent (recycled water). CMWD's groundwater and swface water quality, wastewater management, and water recycled activities are under the regulatory jurisdiction of the California Regional Water Quality Control Board (RWQCB), San Diego Region. Administration of water recycling activities was delegated to CMWD by the RWQCB through "Order No. 98-200 Master Reclamation Permit for Carlsbad Municipal Water District, San Diego County" adopted on December 16, 1998. This order allows CMWD to deliver recycled water to all areas in the City of Carlsbad. Planning Background On May 8, 1990, the Board of Directors ofCMWD adopted Ordinance No. 31, mandating the use of recycled water wherever feasible in the District. CMWD began planning the recycled water system culminating in the development of a report titled "City of Carlsbad Water Reclamation Master Plan" adopted by the City Council in March, 1992. The master plan was separated into five phases and envisioned delivering up to 11,480 acre- feet per year with a peak demand of 21.4 mgd of recycled water to the entire City based on existing and projected irrigation demands. The Phase I project, was initiated in 1992 and completed in 1994. It was funded through a low interest loan from the State Water Resources Control Board, and a rebate program from MWD and the San Diego County 12 Rev. 03/28/96 I ( Water Authority. Funding from·idWD was obtained through their Local Prt.J.:Cts Program, which CMWD later converted to MWD's Local Resources Program (LRP). Current Planning As noted previously, the Reclaimed Water Master Plan separated the development of the recycled water system into five phases for implementation. Phase I was completed and began full operation in 1994. By 1997, the demand for recycled water began to exceed the available supply. To make more efficient use of available local water resources the CMWD proposes to construct Phase II of its recycled water program. To accomplish this, in 1996, CMWD began updating the Rec~ Water Master Plan and completed this effort in 1997: A report was prepared titled "Update of the Reclaimed Water Master Plan". This report identified ten possible alternatives for the Phase II project after investigating customer irrigation demands, determining options for increasing the treated supply, locating pipelines, pmnping stations, and reservoirs, and reviewing funding alternatives. Alternative 9 was recommended for Phase II increasing the recycled water supply from 2.75 mgd to 8.00 mgd with an average annual demand of 4,480 acre-feet per year or 4.00 mgd. In September 1998, CMWD submitted a proposal to MWD's LRP to obtain funding for a portion of the Phase II recycled water system's operation and maintenance costs. In January, 1999, MWD submitted a written response indicating a willingness to.approve fimding. ·CMWD is currently negotiating a contract with MWD for this project. CMWD also is preparing an application to SWRCB 's Revolving Fwid program to obtain a portion of the Phase II Reclaimed Water Project's capital funding through a low interest loan. The application will address facilities required for Phase II. #" • CMWD in a cooperative effort with Leucadia County Water District, Olivenhain Municipal Water District, and San Elijo Joint Powers Authority, also applied for Public Law 102-575 Title XVI funding through _die __ - Federal Bureau of Reclamation. The Phase II project was combined with projects proposed by the other agencies on the application and contained under the fimding title "North San Diego County Area Water Recycling Project". Under the Reclamation, Recycling and Water Conservation Act of 1996, the Bureau of Reclamation was authorized to participate in the North San Diego County Arca Water Recycling Project at a federal cost-share of up to 25 percent. However, no appropriation has been approved. Existing Phase I Recycled Water Facilities As indicated, CMWD has completed the Phase I of the project. This system can supply up to 2.75 mgd of · recycled water. The facilities for Phase I consist of the following: Supply Sources- Reservoirs- Pumping Station- Pipelines- Meadowlark Water Reclamation Plant (2.0 mgd and Gamer Water Reclamation Plant (0.75 mgd) Two existing steel tank reservoirs, referred to as the "Twin D" tanks, were converted from potable water storage to recycled water storage having a total capacity of 2.5 MG. A new 2.0 mgd pumping station was constructed. The pumping station obtains water from the Meadowlark Water Reclamation Plant's "fail-safe pipeline" to the ocean. The recycled water is then pumped from the "fail- safe" pipeline to the "Twin D" tanks. Transmission pipelines were constructed to deliver recycled water to major customers in the southwest area of Carlsbad. Beginning in 1993, the pipeline distribution system has been expanded by land development projects occurring in that area. Although the Gamer Water Reclamation Facility makes up a part of the recycled water supply for the Phase I project, it was not contained in CMWD's low-interest loan fimding program approved by the State Water 13 Rev. 03/28/96 ( . . Resources Control Board. Tt .... J..,CWD obtained their own separate low-inteic:st loan on the facility for funding of improvements to meet water quality requirements. The water produced by the Gather Water Reclamation Plant is piped directly to the La Costa Golf Course and no other pipelines are connected to this supply source at this time. Discussions are llllderway with LCWD to construct a connecting pipeline by LCWD to CMWD' s distribution system. PROJECT DESCRIPTION The Encina Basin Water Reclamation Program, Phase II project will be an integral expansion of the existing Phase I system. It will obtain a supply of recycled water from three treatment facilities and supply · this water to irrigation customers through a pipeline distribution system containing storage reservoirs and pumping stations. Following is· a description of the physical construction and operational aspects of the project. The Phase II project includes: 1. Continuation of two existing supply sources, the Meadowlark Water Reclamation Plant (MWRP) at 2 mgd, and the Gather Water Reclamation Plant at 1 mgd. 2. Construction of a new advanced tertiary water reclamation plant, referred to as the Carlsbad Water Recycling Facility (CWRF). It will have an initial capacity of 5 million gallons per day (mgd). The site has been designed with possible future .,:xpansions to 16 mgd. 3. Construction of approximately 10 miles of transmission and distribution pipelines, and water services to irrigation customers. Pipeline sizes will range in size from 4-inches to 24-inches in diameter. ------- 4. Construction of three pump stations to supply water to higher elevations in the pipeline distribution system. The pump stations are located in. the southeast portion of the Calavera Hills community, near Calavera Lake; on the east of the El Camino Real, just south of the Palomar Airport Road intersection; and at the existing "Twin D" reservoir site near the intersection of Poinsettia Lane and Black Rail Road. 5. Construction of improvements to the e~isting 54 million gallon (MG) Mahr Reservoir with the purpose of maintaining the quality of the stored water. 6. Conversion of two existing potable water storage tanks (i.e. "C" and "E" Reservoirs) to recycled water. 7. Construction of one 10 MG secondary flow equalization basin llllder the Phase II project. Ultimately up to three 10 MG secondary flow equalization basins would be built. These basins equalize peak flow to the CWRF and the Encina Water Pollution Control Facility's ocean outfall. The Recycled Water Plant-Carlsbad Recycled Water Facility (CRWF) The recycled water plant will be constructed as a new advanced tertiary recycling water plant. A portion of the secondary effluent from the EWPCF, that is now disposed of through an outfall pipeline to the Pacific Ocean, will be diverted to the proposed water recycling plant. A secondary effluent pump station will first pump the water to "flow equalization basins". Stored flow is then pumped by an influent pump station to parallel treatment trains: one including continuous backwash filters and the other providing microfiltration/reverse osmosis (MF/RO) treatment to reduce salinity of the treated water. The salinity is referred to as total dissolved solids (IDS). The treated water from both trains will be combined having a maximum IDS of 1,000 mg/L, and then disinfected in a chlorine contact basin. The disinfected water will then be conveyed to a recycled water storage tank where a pumping station will pump the water into a pipeline distribution system. A schematic flow diagram of the process is shown on Figure 2. Secondary Effluent Pumping - A pumping station will be constructed at the existing EWPCF to intercept secondary effluent flows prior to the ocean outfall. A forcemain would be used to convey the secondary effluent south to the proposed water recycling plant. Flow Equalization Basin -Prior to being treated at the proposed water recycling plant, the flow will enter a fully enclosed equalization basin. The equalization basin will serve two purposes. First, it will 14 Rev. 03/28/96 I Flow Equalization Basin -.t>r",r to being treated at the proposed water 11:;Cycling plant, the flo'w will enter a fully enclosed equalization basin. The equalization basin will serve two plllJ)oses. First. it win equalize flow to the ocean outfall during times of peak flow. This is most likely to occur during the winter season. The flow equalization basin will also serve to store/equalize flow to the proposed water recycling plant. Influent Pumping Station - A pumping station will be located at one end of the flow equalization basin to convey secondary treated flow to either the continuous backwash filters or to the MF/RO system. The pumps and control system will be contained inside a building. MF/RO Process - A portion of the flow will be demineralized to reduce the IDS to a maximum of 1,000 mg/L. This is a membrane process consisting of microfiltration (MF) artd reverse osmosis (RO). After adding sodium hypochlorite to the secondary effluent, the water will enter microfiltration membranes to remove suspended and collodial solids. Sulfuric acid and a threshold inhibitor are then · added and the water is processed through RO membranes. The RO system will separate the flow into a concentrate stream and a purified permeate stream. The concentrate stream having a IDS of approximately 9,270 mg/L will be conveyed directly to the EWPCF ocean outfall. The purified permeate having a IDS of 40 mg/L will be blended with the filtered bypass stream to become the blended "product water". The MF/RO membrane process elements are summarized below: • Microfiltration -These are membranes consisting of either symmetrical hollow fibers fabricated from polypropylene packed in a pressure vessel with dimensions of 4-inches in diameter by 48 inches in length, or hollow fme fibers fabricated from polyvinylidene fluoride packed into a pressure vessel with dimensions of about 6 inches in diameter by 80 inches in length. -~-. - • Cartridge filters -These are stainless steel. housings containing 20 micron polypropylene cartridge filters. · • Sulfuric acid storage - A 2,000 gallon tank will be installed to store sulfuric acid. The tank will also be enclosed in a containment area to control accidental spillage. • Pumps will be used to maintain pressures between 100 psig and 300 psig for the RO. • Spiral wound RO elements -These will-be 8 inches in diameter by 40 inches in length and 400 square feet in area. • A decarbonator-This is a packed column over which RO permeate is allowed to flow, and where the permeate is stripped of carbon dioxide. The decarbonator is a tank 8-feet in diameter and approximately 30-feet in height. • A clean in place system -Consisting of a tank in which cleaning chemicals are mixed with permeate and heated with an electric heater. • A membrane flushing tank -Consisting of a fiberglass tank, 8-feet in diameter by 25-feet in height, in which permeate is stored and used for flushing the RO system when it shuts down. All the equipment in the MF/RO process 'will be either covered by a canopy structure or within a fully enclosed structure. The specifics will be.determined as part of the City's development review process. Filtration Process -The water is also subject to a filtration process which removes suspended solids. Before secondary effluent enters the filters, sodium hypochlorite is added to maintain a chlorine residual of 3 mg/L, and a coagulant aid polymer is added to assist in removing collodial and suspended solids. The water will then enter a continuous backwash upflow, mono-medium filter, "Dynasand" Filter. The filtered water will have a IDS of 1,400 mg/Land be blended with the MF/RO process treated water. The backwash from the Dynasand filter will be conveyed back to the EWPCF for removal. Prior to conveying the backwash water to the EWPCF the flow will be processed though a solids contact clarifier to thicken the removed collodial matter and reduce the amount of water in the backwash. The final "product water" will be blended with the MF/RO water, and will have a maximum IDS of 1,000 mg/L. The filtration facility would be contained in an area of approximately 2,600 ft2. This area is comprised of concrete filter cells, influent channel, reject water piping (to convey reject water back to EWPCF}, effluent piping, and an air compressor. 15 Rev. 03/28/96 ( Ultraviolet Irradiation ({J. 1 -Filtered water is disinfected by flowin5 past submerged arrays of U\" lamps. Chlorine Contact Basin -Water is further treated with chlorine. Sodium hypochlorite will be added to the blended MF/RO and filtration process water and placed in a contact basin to provide approximately 120 minutes of contact time to disinfect the blended product water. The contact basin will have a serpentine type flow that includes three 50-feet long by 10 feet wide by 10 feet deep concrete channels. Recycled Water Storage Basin -This basin will store recycled water prior to being pumped into the distribution system. In emergency conditions an isolation pipe connecting the flow equalization basin with the recycled water storage basin could be opened to provide additional storage of secondary treated effluent in the recycled water storage basin. When the additional secondary storage is no longer needed, the recycled water storage basin would be cleaned and disinfected, and placed back into operation for recycled water storage only. Recycled Water Pumping Station -This pumping station· will deliver the recycled water into the distribution piping system from the recycled water storage basin. The pumps and controls will be contained inside a building. Control Building -The CWRF will be designed a~ a fully automated system. However, operation and maintenance activities will be performed,· an,Si consideration will be made to allow visitors tour the · facility. For these purposes a control building is included in the CWRF. The control building will have a control room housing computer control equipment, an operations office, a plan.room (to store plans, specifications, records, and shop drawings), a small lab for minor water quality analyses, a parts and--. - maintenance storage area, and a meeting room for visitors and other purposes. Site Layout-The site will be adjacent to the south side of the EWPCF. Visitor parking and access to the CWRF will be provided along Avenida Encinas; however, a small access road will be constructed from the EWPCF directly to the CWRF for operation and maintenance personnel access. The control building will be on the west side of the site near A vcro,ida Encinas. Immediately east of the control building are the treatment processes and the chemical storage tanks. Further to the east near Interstate 5 will be the flow equalization basins, and the influent and recycled water pumping stations. The secondary effluent pumping station will be located on the EWPCF property near the secondary clarifiers. The pumping stations will be in buildings. A site layout of the CWRF is shown on Figure 3. The layout shows the area required for the Phase II project and ultimate buildout requirements as dashed lines, which are not a part of this project. The perimeter of the site will be landscaped. A landscape concept is shown on Figure 4. Booster Pumping Stations To provide water service to the higher. elevations in the distribution system at a desirable pressure requires three booster pumping stations in addition to the pumping stations at the treatment facilities. One booster pumping station is planned at the "Twin D" tank site. (See attached Figure 5). A second is planned at the intersection of Palomar Airport Road and El Camino Real. (Figure 6). A third is planned in the Calavera Hills Village "T'' area on an existing graded pad located on the southeast corner of the tract boundary. (Figure 7). Distribution Pipelines Pipelines will be required to deliver the recycled water to customers for irrigation uses. The location of the pipelines are shown on Figure 8 and range in size from 4-inches to 24-inches in diameter. New service pipelines are also required to supply the recycled water to irrigation meters for each customer. The majority of pipelines are proposed within existing, improved street rights-of-way. Other segments are proposed in existing unpaved utility access roads. Others transect landscaped areas or natural areas. In this case a directional drilling technology will be employed to minimize disruption to those areas. The directional drilling technology is a trenchless technology. 16 Rev. 03/28/96 Reservoirs Reservoirs will be needed to store water to meet peak recycled water demands. The reservoirs include the existing Mahr Reservoir, and "C" and "E" tank reservoirs. The "C" and "E" tanks will not be modified · except they will be converted from potable water to recycled water storage. Mahr Reservoir -Mahr Reservoir .is an earthen dam structure originally constructed to store treated effluent from the MWRF. Improvem,ents are planned at Mahr Re~oir to maintain the quality of the stored water. The improvements include a new inlet/outlet structure on the upstream face of the earthen dam (to allow operators to extract water·at different depths), a porous .. halt liner and a floating cover. In addition, a control building will be constructed for the automatic control valves, and to store sodium hypochlorite for supplemental disinfection of the stored water, and a small air compressor for an air injection system consisting of air diffusers in the bottom of the reservoir. A paved· access road and lighting are also incorporated. Refer to Figure 9. ,i --~--- 17 Rev. 03/28/96 . ' r mwrm 1 · r .··· r · Il. ENVIRONMENT AL ANALYSIS B. Environmental Impact Discussion I. LAND USE AND PLANNING a. Potentially Significant Unless Mitigation Incorporated. The proposed water recycled plant site is zoned for, and has a General Plan designation of, planned industrial and office. The proposed use is a public utility, which is inconsistent with the current zoning and General Plan designations. The zone and General Plan designations for tlle site, or for that portion of the site proposed for public utility use, will need to be changed to Public Utility to allow the use. A mitigation measure has been incorporated accordingly. The pump station sites are located on properties with various designations which include residential. Pursuant to the Zoning section of the Carlsbad Municipal Code, pump stations are conditionally ·permitted uses in all zones and are subject· to the conditional use permitting procedure. The process provides the means to evaluate the appropriateness of particular types of uses, which because of their nature have the potential to impact surrounding land uses, and to apply conditions of approval to mitigate those impacts. The submittal, and consideration, of a conditional use permit is required for entitlement of this project. A mitigation measure has been incorporated. Transmission pipeline installations are within existing or planned street rights of way or in existing public u,.tility easements which is consistent with the General Plan and Zoning Ordinance. b. Potentially Significant Unless Mitigation Incorporated. The City has recently adopted a City=--· - wide Habitat Management Plan (HMP) .. The recycled water plant site is vacant, but has been historically disturbed, and is not identified as a conservation area in the HMP. Additionally, two of the pump station sites are in disturbed or developed areas, and not identified as a conservation area. The pump station site proposed near Lake Calavera is in a conservation area, but is adjacent to a unpaved utility access road and along a slope whose surface has been disturbed and contains no significant habitat resources.· The installation of such water related infrastructure in this conservation area was acknowledged in the HMP. The majority of pipeline installations are proposed in either existing street rights of way or in existing utility access roads. Therefore no impacts are anticipated. A minimal amount of pipeline installation will be either through introduced landscaped areas, or natural vegetation areas. To minimize impacts to natural vegetation areas, a mitigation measure has been incorporated into the project which requires the use of a micro-tunneling or directional drilling technology to avoid disruption to those areas. Improvements at the Mahr Reservoir site, may as a result of the Division of Mines and Geology requirements, necessitate disruption of a potentially significant area of natural vegetation along the downstream face of the dam. The extent of the disruption, if any, is not lmown at this time. A mitigation measure is being applied which requires that the CMWD conduct additional .biological surveys and obtain the necessary resource agency clearances in the event of such plan changes, which would occur prior to conducting any work. The proposed water recycling plant site is located within the Coastal Zone and is subject to the City's Local Coastal Program. Any changes to land use designations identified in the City's General Plan which are in the Coastal Zone, require an LCP amendment. as well. Accordingly, a mitigation measure has been incorporated. c. Potentially Significant Unless Mitigation Incorporated. Given the proposed public utility use nature (i.e. anticipated activities, structural installations, appearance etc.), a potential does exist for impacts on, or incompatibility with, surrounding land uses unless mitigation is incorporated. The water recycling plant site is located in an area characterized by a mix of land uses. Potentially impacted land uses in the vicinity include residential to in east (on the other side of the freeway) and a developing multi-family project to the southwest of the site. Also, but to a lesser degree, commercial uses to the south of the site may be impacted. Mitigation measures can minimize potential impacts to a level of insignificance and have been incorporated accordingly. They relate to 18 Rev. 03/28/96 ( I requirements that the pruJ.:ct complete the City's development ~ ... liew process and special requirements for screening of operations and/or enclosure of equipment, enhanced building· architecture, and enhanced perimeter landscaping. Three pump station sites are proposed. One is proposed in relatively remote location along an existing, unpaved utility access road near Lake Calavera and impacts/incompatibilities are expected to be less than significant. Two are located in prominent locations along existing, or planned, major arterials. Mitigation measures can minimize potential visual impacts to a level of insignificance. The pump stations are subject to the conditional use permitting and development review process. Additionally special design requirements, or mitigation, have been developed. For the pump station proposed near the comer of El Camino Real and Palomar Airport Road, mitigation involves locating the facility underground and requiring the CMWD to work with the property owner in integrating the installation into monument signagelhardscape and landscaping for the Bressi Ranch Development. For the pump station proposed at the existing tank site off Poinsettia Lane, mitigation consists of a architecturally enhanced structural enclosure and screening landscape. Pipelines will be within either existing streets rights of way or existing utility access roads and therefore unobtrusive. Improvements at the existing Mahr reservoir site are similarly unobtrusive to surrounding land uses and will not appreciatively change the existing visual quality of the site. d. Potentially Significant Unless Mitigation.Incorporated. The site of the proposed water recycling plant has been identified in the City's Local Coastal Program as property historically used for agriculture. The site, however, has been identified as "non-prime agricultural_ lands" which can be converted to urban use by the applicant's participation in the Agricultural Conversion Mitigation... __ _ program. A mitigation measure has been incorporated accordingly. The pump station sites, pipeline locations, and existing Mahr Reservoir site are not located in, or near, agricultural areas and, therefore, will not affect agricultural resources. e. No Im.pact. The proposed water recycling plant site is located on property situated in between the 1- 5 Freeway and· Avenida Encina in the c,st and west, and an existing water treatment plant and commercial uses in the north and S<>Uth. No disruption or division of an established community is anticipated as a result implementation of the water recycling plant. Pipeline construction will be underground, in street rights of way or other public utility easements, and will not physically divide any established community. Pump station sites are small and situated such that they will not disrupt or divide any established community. II. POPULATION AND HOUSING a. No Impact. The proposed project involves no addition, or removal, of residential uses and, therefore, will not cause changes in regional and local population projections. b. Less than Significant Impact. In addition to general resource conservation, a primary goal of the proposed project/program is to redl,lce the City's reliance on imported water sources provided by the Metropolitan Water District (MWD). Carlsbad's anticipated reduced need for imported water could, in theory, mean that additional water resources are made available to other MWD customers, which could have growth inducing impacts either directly or indirectly. The am01mt of water that could be made available to others is 16 MGD -the ultimate capacity of the proposed system. Given that relatively small amount of water within the diverse context of the MWD market (i.e. customers such as agriculture, industry, residential and a service area covering all of Southern California), the potential for growth induction seems less than significant. At the local level, additional water resources are not expected to induce growth. Growth in the City of Carlsbad is regulated and numerically capped by the City's Growth Management Program. 19 Rev. 03/28/96 I 7 f l [J]§f .. f ( improvements at the k..nr reservoir and Encina Watewater Treaiment are at existing facilities. therefore, the project will not displace existing housing. · ID. GEOLOGIC PROBLEMS a. No Impact. The City of Carlsbad General Plan does not identify any geologic fault across the proposed water recycling plant site. The nearest fault system, Rose ·canyon Fault, is shown to be located within 4 miles of the site. The geotechnical report prepared for the 1996 extension of Avenida Encinas also concluded that there are no faults crossing the plant site. Other components of the project, pipelines and pump stations, are not expected to be impacted by fault ruptures. b. Less Than Significant Impact. Although no faults occur within the project boundaries, the proposed project is within a seismically active region. All structures will be designed to comply with the Uniform Building Code which represent currently accepted earthquake design standards. The project's compliance with UBC will be ensured through the City's development review and permitting process. Additionally, it is anticipated that workers will not be permanently stationed at the site. The operation and maintenance personnel and the general public will infrequently visit the plant facility. The water reclamation plant will be attended to by operation and maintenance staff, only, on a low frequency basis; and therefore, people exposed to seismic shaking while at these sites will be very low. • c. Less Than Significant Impact. Ground failure or liquefaction could occur in conjunction with a r r major seismic event. However, for the proposed water recycling plant site, previous investigations indicate a very low potential for liquefaction and ground failure. Reference is made te a geoteehnicat---- report prepared by Geocon Incorporated, dated February 14, 1996 that investigated the potential for liquefaction on adjacent property to the south referred to as "Poinsettia Properties". The report concluded the following: "Due to the dense to very dense condition of the underlying formational soils on the site and the recommended recompaction of the topsoil's and alluvial soils the potential for seismically induced liquefaction of the onsite soils is very low." In addition to this, the geotechnical report for the 1996 extensiQ11 of A venida Encinas states that "No evidence of perched groundwater was observed in the terrace deposits along the southern portion of the site." The design of the proposed water reclamation plant will require specific geotechnical studies as a part of the design process. The recommendations in the geotechnical report will provide information regarding recompaction efforts for the proposed project to achieve adequate foundation conditions for structures which will be ensured through the City's development review and permitting process. The property for the "Twin D" booster pumping stations has no potential for liquefaction based on a previous geotechnical study prepared by Leighton & Associates dated October 2, 1990. It was concluded that "The onsite materials below the ground water table are not considered liquefiable due to their high density characteristics, alpng with low ground water table elevation". No problems were indicated for the El Camino Real /Palomar Airport Road Site according to the report prepared for the widening of Palomar Airport Road titled " Geotechnical Report for Palomar Airport Road East to El Camino Real", dated September 27, 1990. Finally, no liquefaction potential was indicated for the Calavera Hills Village "T'' site as indicated in the Geotechnical Report prepared in 1990 for Calavera Hills Subdivision. d. No Impact. The project would not result in or expose people to seiche, tsunami, or volcanic hazards. e. Less Than Significant Impact. The topography on the proposed water recycling plant site consists of basically level terrain with elevations ranging from 55 to 65 feet above sea level. The ground slopes from the north east comer to the southwest comer at approximately 1.3 feet per 100 feet of length. The land was cultivated in the past as noted on several maps including the geotechnical report for Avenida Encinas Road Extension, and the appraisal report by Donald P. Falk in 1994. No problems with mudflows have occurred or were noted. The land around the site is improved with a major freeway (Interstate 5) and collector roads and the lands adjacent to these roads slope away 20 Rev. 03/28/96 ( r . from the site; and therefon:, there is no potential for landslide or muu flows coming from adjacent properties on to the site. The pump station, at the "D" tank site, could be placed at two locations. One location would be on . relatively level ground. The other location would require a retaining wall within a cut slope to construct any building. No landslide would occur because the design will require a geotechnical report to develop temporary shoring for any construction including permanent retaining walls if required. Similarly, the pump station site near Lake Calavera would require a retaining wall within a cut slope to construct any building. Again, no landslide would occur because the design will require a geotechnical report to develop temporary shoring for any construction including permanent retaining walls if required, which will J:>e ensured through the City's development review and permitting process. The pump station s1te near the intersection of Palomar Airport Road and El Camino Real, is on relatively level ground with improved roads on the east and north sides, and no problems are anticipated at that site. The pipelines will be constructed using normal trenching operations with worker shoring protection required. No impacts are anticipated. f. Less Than Significant Impact. Erosion occurs when soil particles are dislodged by air, water, or human activity. For the proposed water recycling plant site, some grading of the top soil would occur in order to construct access and maint~ roads, excavations for concrete tanks and pipelines and for final site grading. It is anticipated that the equalization basins would be constructed partially at grade. It is not anticipated that any significant changes in topography will -be as a result of this project. ~ -~--- Regarding erosion, according to the Soil Conservation Service maps, sheet 23 Encinitas Quadrangle, the soil type is "Marina loamy course sand, 2 to 9 percent slopes". The soil erodibility is listed as "Severe 2" which indicates that protective and corrective measures are needed before and during the time the soil is used or graded. However, the geotechnical report prepared for the extension of Avenida Encinas does not indicate any problem with erosion. Erosion impacts will be mitigated by employing Best Management Practices, in accordance with the Regional Water Quality Control Board (RWQCB) and City requirements to ensure that soil erosion does not occur during construction. Final site grading would be followed by paving of access roads, installing curbs and gutters and installing· landscaping to stabilize any slopes that might be constructed. The pump station at the Twin D site are listed as Chesterton fine sandy loam, 5 to 9 percent slopes, Severe 9 erodibility index. The previous soil report for this site by Leighton & Associates indicate that erosion can be controlled by constructing berms or swales along the top of slopes and lot drainage directed such that surface runoff on the slope faces be minimized. Little or no problems were noted in the geotechnical reports for the oth~ two pump station sites. The latest Regional Water Quality Control Board and City ordinances shall be used to mitigate excessive site erosion during construction. Best Management Practices will be used to mitigate runoff and soil erosion should it occur. The pipelines will be within paved roads and not pose any serious erosion problem. The paving will be cut for pipeline trenches and the earth removed will be stockpiled along the trench. Upon installation of the pipeline the earth removed will be recompacted in place, and the excess hauled , away to an approved location. Pipeline construction will not occur during wet weather periods. To mitigate any temporary water or wind erosion impacts associated with construction activities, standard erosion control measures such as sandbagging, vegetation planting and watering shall be developed prior to construction. All aspects of the project are subject to the City's grading and erosion controls standards and requirements which will be ensure through the City's development review and permitting process. 21 Rev. 03/28/96 . ' / ( ! g. No Impact. None of ii: ... · geotechnical reports reviewed for this pruJect reference any potential for subsidence. Additionally, standard engineering practices for recompaction, fill placement, etc. will be utilized during construction. h. Less than Significant Impact. For the proposed water recycling plant site, previous geotechnical reports indicate that the alluvial soils possess highly expansive characteristics. One geotechnical report for the adjacent property, "Poinsettia Properties", stated that expansive soils can be mitigated by placing it such that it is not within 3-feet of finish grade. Another report for construction of A venida Encinas stated that the upper approximately 36 inches of these materials should be removed and recompacted. These or other standard practices will be incorporated into the project design, which will be ensure through the City's development review and permitting process, resulting in less than significant impacts. For the pump station sites, expansive soils were not encountered based on previous geotechnical studies, Expansive soils may be encountered along the pipeline routes. However, no impact will occur to people as a result. · 1. No Impact. There are no unique geological or physical features associated with the proposed water recycling plant and pump station sites, or along the proposed pipeline routes. IV. WATER ,i a. Less Than Significant Impact. Construction of paved areas, concrete tanks and buildings will decrease absorption rates and increase the amount of surface runoff at the proposed-water reeycli:ng--. - plant site, compared to the existing conditions. Full street and drainage improvements along the site frontage will be required of the project as part of the development review process, mitigating the potential for impact to a level of insignificance. With regard to the pump station sites, given thei.r small surface area, the impact is expected to be less than significant. No impact is anticipated from the pipelines, since they will be either underground and/or underneath·existing paved areas. b. No Impact. According to Flood Map 060285-00040 dated 9/18/87, the site for the proposed water recycling plant and pump station sites are located in Zone C, which is not an area considered prone to flooding. · c. Less Than Significant Impact. No long term discharge into surface waters or alteration of surface water quality is anticipated as result of this project. The project, in fact, will decrease the amount of effluent currently being discharged into the ocean by the Encina Water Treatment Plant (i.e. effluent otherwise being discharged will be treated by the proposed water recycling plant and sent back to the community for landscape and agriculture irrigation). In the short term, some groundwater may be discharged into the ocean, via the Encina Plant and associated with dewatering of the site during construction activity. However, given the small amount, quality, and relative compatibility of the ground water discharge into the ocean, adverse impacts are not anticipated. d. No Impact; Groundwater discharge into the ocean as a result of dewatering associated with construction will not impact the amount of surface water in the ocean. e. No Impact. The nature of the project precludes changes in water movement. The project does not impact any steams or water courses. f. Less than Significant Impact. The nature of the project precludes changes in the direction or rate of flow of ground water. Although the ground water quality is poor and cannot be used beneficially, the levels of the groundwater may be high, based on geotechnical reports at the site for the proposed Plant site. Therefore, groundwater levels may need to be controlled should they become too high. Since part of the project envisions in ground tanks, pipelines or storage basins some dewatering during construction may be necessary. Any groundwater removed during construction will be 22 Rev. 03/28/96 ( ( conveyed to the Encina "ater Pollution Control Facility for treattnent and final ocean discharge. (See discussion under N c above regarding discharge into a surface water body). · g. No Impact. The project will not change groundwater direction or rate of flow of groundwater. No wells are proposed. No permanent .excavations to the depth of groundwater levels are proposed. h. No Impact. No changes will occur to the groundwater quality from this project. The existing groundwater quality is very poor and.not useable for public water systems, according to the Water Quality Control Plan adopted by the San Diego Regional Water Quality Control Board, June 1994. The water produced for irrigation will be much higher quality than the existing groundwater at all locations in the City. The IDS levels of the water produced by the project will be less than 1000 mg/L. 1. No Impact. No public water supply groundwater will be pumped or removed by fll:is project. V. AIR QUALITY a. Less Than Significant Impact. The project individually would not result in a violation of air quality standards. No additional employees, · and the resulting vehicle trips, are anticipated. However, the emissions resulting from construction equipment and activity in the short term and the emission from long-term plant operations,~where within acceptable limits individually, cumulatively contribute to the poor air quality of the region. To minimize excess pollution caused by dust generated during site preparation operations, construction sites will be watered prior to ·and during grading. Any internal combustion engines used for construction activities will be operated -for-.-- minimum amounts of time to accomplish. tasks and will be maintained in good running order to minimize adverse products of combustion. The impacts in this case are considered to be less than significant. b. Less Than Significant Impact. The project would be built using standard construction methods for reinforced concrete structures, buildings,. perimeter walls and pipelines; and therefore, would not expose sensitive receptors to pollutants as a result of plant/program operations. Short-term construction activities for project facilities will produce additional air pollutants, mainly products from diesel exhausts and dust from grading activities. To minimize excess pollution caused by dust generated during site preparation operations, construction sites will be watered prior to and during grading. Any internal combustion engines used for construction activities will be operated for minimum amounts of time to accomplish tasks and will be maintained in good running order to minimize adverse products of combustion. The impacts in this case are considered to be less than significant. c. No Impact. The nature of the project precludes any alteration of air movement, moisture, or temperature, or cause any change in climate. d. Less Than Significant Impact. The prqposed water recycling plant will generate a small degree of odor, but it is considered to be less than significant. Odor generation will be mild because the proposed water recycling plant is filtering/treating only secondary treated· effluent that is now discharged to the ocean. Chemicals proposed for use in the treattnent process will be in enclosed containers and will not be vented to the atmosphere. During refilling of the sodium hypochlorite containers it may be possible to detect a bleach type odor when standing next to the container. However, this bleach odor will dissipate and will not be detectable within 50-feet of the container. No odors are anticipated from the pipelines or booster pump stations because they contain only recycled water. VI. . TRANSPORTATION a. Less Than Significant Impact. The amount of projected daily traffic anticipated as a result of the project, short and long term, is minimal. Therefore traffic impacts are expected to be less than 23 Rev. 03/28/96 . . I r significant. To minilrik...: the potential for short tenn impacts re1oang to construction traffic. the project is subject to the City's haul route permitting procedure. In the long term, a minor amount bf additional traffic is anticipated to be generated from the project. The proposed water reclamation plant will be fully automated, and only daily site visits will be performed. Although no agreement has been prepared, it is anticipated that a contract with Encina Wastewater Authority will be established to provide operation and maintenance of the facility. Therefore, no additional staffing is required. It is planned that an access road will be constructed from the Encina Water Pollution Control Facility to the water reclamation plant to enhance access for operation and maintenance personnel which would remove any traffic on existing public roads. When the water reclamation plant is in operation, only periodic monthly deliveries of treatment chemicals are required. The booster pumping stations and pipelines will be operated and maintained by existing staff at the water recycling plant. The pumping stations wiil be automated and only periodic site visits are anticipated. Mahr Reservoir will have routine site visits for security and to verify operation of the valves. It is planned that twice a year that cleaning of the cover will be performed. These cleaning activities may be contracted out; and therefore, a minor amount of additional traffic, on a temporary basis, would be generated during this time. The cleaning time period is estimated at 4 to 5 days. b. No Impact. Do to the nature of the project no road hazards would be created. Access roads at the CWRF will be designed to accommodate the general public for visits and chemical delivery trucks. c. Less Than Significant Impact. During,;. construction of the project, emergency access may be temporarily disrupted. An aspect of the project involves the installation of pipeline in existing road rights of way. The disruption is not expected to be significant however, since construction would be limited to a narrow strip along the edge of the road ~----. - d. No Impact. The facility is primarily self operating and will generate little need for parking. It is expected however that demonstration tours will be given occasionally. Adequate space exists and adequate on-site parking will be provided, which will be determined/ensured through the development review process. e. Less Than Significant Impact. No hazards or barriers for pedestrians or bicyclists will be created. In the short term, the pipeline and plant construction activities may temporarily require rerouting pedestrians and bicyclists around the construction areas. The specifications for pipelines shall address the need to create alternative routes during construction as required by the City of Carlsbad and identified through the development review process. f. No Impact. Do to the nature of the project no conflicts will be created with alternative transportation plans. g. No Impact. No rail, waterborne or air traffic impacts will be created. VII. BIOLOGICAL RESOURCES a. Potentially Significant Unless Mitigation Incorporated. The City has recently adopted a City- wide Habitat Management Plan (HMP). The recycled water plant site is vacant, but has been historically disturbed and is not identified as a conservation area in the HMP. Additionally, two of the pump station sites are in disturbed or developed areas, and not identified as a conservation area. The pump station site proposed near Lake Calavera is in a conservation area, but is adjacent to a unpaved utility access road and along a slope that has been disturbed and contains no significant habitat resources. The installation of such water related infrastructure in this conservation area was acknowledged in the HMP. The majority of pipeline installations are proposed in either existing street rights of way or in existing utility access roads. Therefore no impacts are anticipated. A minimal amount of pipeline installation will be either through introduced landscaped areas, or natural vegetation areas. To minimize impacts to natural vegetation areas, a mitigation measure has been incorporated into the project which requires the use of a micro-tunneling or directional drilling technology to avoid disruption to those areas. Improvements at the Mahr Reservoir site, may as a 24 Rev. 03/28/96 result of the Division of ivfines and Geology requirements, necessitate disruption of a potentially significant area. of natural vegetation along the downstream face of the dam. The extent of the disruption, if any, is not lmown at this time. A mitigation measure is,being applied which requires that the CMWD conduct additional biological surveys and obtain the necessary resource agency clearances in the event of such plan changes, which would occur prior to conducting any work. b. No Impact. There are no locally designated species on any of the impacted sites. c. Potentially Significant Unless Mitigation Incorporated. See response to VII a above. d. No Impact. Based on a review of previous geotechnical studies, a limited site investigation report, and appraisal report, there are no wetlands, marsh, riparian or vernal pools on the properties impacted by the project. e. No Impact. There are no wildlife dispersal or migration corridors impacted by the project. VIII. ENERGY AND MINERAL RESOURCES. a. No Impact. There is no conflict with adopted energy conservation plans. b. No Impact. The proposed project will not use non-renewable resources in a wasteful manner. The project will recycle water that is now discharged to the ocean. c. No Impact. Due to the nature of the project there will be no loss of availability· of a lmown lninem--- resource. IX. HAZARDS a. Potentially Significant Unless Mitigation Incorporated. In processing the wastewater, chemicals are used to assist in the treatment process and to clean membranes for microfiltration and reverse osmosis. These chemicals are in sealed ·containers and are injected into the treated flow stream. These chemicals do not normally come into contact with people. The chemicals proposed for use are as follows: Sodium hypochlorite 12.5% will be stored onsite in an 8,000 gallon tank. The chemical will be injected upstream of the treatment units and also for final disinfection to maintain a chlorine residual in the treated effluent. Two tanks may be installed to store the chemical. Periodic refilling of the tanks will be handled by the chemical supplier. The tanks are sealed and no odors are emitted from the tank(s) during operation. A small insignificant amount of a bleach type odor may be released during the filling process; however, it will not be detectable within a· short distance from the tank. It has a very low vapor pressure and therefore negligible volatility. Spills of sodium hypochlorite can be neutralized using sodium bisulfate or ferrous salt solutions. If neutralization is required, all neutralized materials are to be stored in approved Department of Transportation containers. After removal of the neutralized matenal, the area should be flushed with large amounts of water. Sodium hypochlorite is corrosive, but it is not explosive nor flammable. It is classified as a hazardous material under federal guidelines due to its pH of 12.5 to 13.5. This chemical is presently used at the EWPCF and maintenance personnel are familiar with its handling requirements. With a microfiltration/reverse osmosis reclamation plant the following chemicals would be used to periodically clean the membranes. Microfiltration Cleanin&: Sodium Hydroxide stored in two 55 gallon drums. Citric acid stor_ed in a 2500 pound container. 25 Rev. 03/28/96 .. Memclean (surfactant) stored in one 55 gallon drum. Argo Scientific Hypersperse AF 200 will be delivered in 250 gallon tote bins. Sulfuric Acid will be delivered to onsite storage tanks approximately 2000 gallons in capacity. Reverse Osmosis Cleanine: Sodium Dodecylbenzenessulfonate (a surfactant) stored in a 100 pound container. Sodium tripolyphosphate stored in a 2500 pound container. Sodium Hydroxide 25% stored in one 55 gallon drum. Each tank, container or drum will have an enclosure around it to contain any accidental spillage. The enclosure consists of concrete basins with sufficient wall height to contain the volume of chemical in each container. The tanks will be placed in an area to control accidental spillage should it occur. Accidental spills or leaks of treated secondary or tertiary wastewater, hazardous chemicals or certain construction materials are considered to· be potentially significant project impacts. The use of standard design measures such as shutoff valves, monitoring systems and containment structures will reduce this potential impact to an insignificant level. The project will be s\lbject to review by the San Diego County Department of Health Services and the Regional Water Quality Contro~-Boani,--- San Diego Region. These reviews ensure compliance with all regulations related to public health and safety, as well as water quality. Additionally, to mitigate the potential for impact a mitigation measure has been incorporated which requires the applicant to comply with all the requirements of the Carlsbad Fire Prevention Services Division (i.e. a hazardous substances management/storage plan) prior to the issuance of permits. b. No Impact. The project will not interfere with any emergency response plan or emergency evacuation plan. Access along roadways will be maintained during project implementation. c. Potentially Significant Unless Mitigation Incorporated. See the response to IX a above. d. No Impact. The project will not expose people to existing sources of potential health hazards. A health risk study report was prepared by Dudek & Associates regarding investigation of the site for hazardous chemicals due to past farming operations. In the summary of findings section it was reported that the aggregate incremental risk of cancer in the most sensitive target populations from exposure to the various pesticides present in the on-site soils was not calculated to be greater than one excess cancer risk in an exposed population of 100,000, where it is necessary to provide notice of the presence of the pesticides in compliance with Proposition 65. The report states that according to the State of California, this determination indicates that additional measures in the name of protecting human health from carcinogenic effects are not ~arranted. · No hazardous materials are anticipated to be encountered at booster pumping stations, reservoirs or pipelines. Individual geotechnical reports will be required for the pipelines, and any contaminated soil found along the pipeline alignments will need to be disposed of at a licensed landfill. e. No Impact. The project will not increase fire _hazards. Based on site visits there is no brush covering the areas where improvements are proposed. No heat producing elements are part of this project except for the standby generator at the water reclamation plant. This heat will be contained in a building and will be dissipated through a ventilation system. 26 Rev. 03/28/96 X. NOISE a. Less Than Significant Impact. Noise levels will increase as a result of the project since the site is currently vacant. Sound emissions -from the project will occur at'the CWRF, booster pumping stations and the compressor at Mahr Reservoir. Noise will be from the operation of pumps, electric motors, standby generators and compressors. The motors will be specified to limit noise emissions to be below limits established by the City of Carlsbad. In addition, motors will be in enclosures or buildings that will be sound attenuated. The standby power generator will be at the CWRF, and will be diesel engine driven. It will be enclosed in a building incorporating sound attenuation material on the walls and all vent openings to limit the sound emissions to meet hospital zone requirements. There will be noise on a temporary basis during construction. At the site for the proposed CWRF the area has a limited noise sensitivity. Local traffic (especially trucks), as well as the 1-5 freeway and coaster railroad background noise are at very high levels and will mask noise impact potential from the~~~-. During construction noise levels for the noisiest construction equipment are around 80 dB as a mean and 90 dB as a peak. During normal working hours these noise levels will not be greater than the levels normally occurring around the CWRF site. However, construction activities will be prohibited from 7 p.m. to 7 a.m. and all day on Sundays and holidays, prescribed· by the Carlsbad Municipal Code. ~ .. Construction at the booster pumping station sites and the distribution pipelines similarly will not be an issue during normal working hours. However, construction will be prohibited during 7 p:m. ttr7---- a.m. and all holidays and SW1days. In addition, construction equipment shall have manufacturers noise control devices in place. Short and long term noise associated with the project is expected to be less than significant. b. Less Than Significant Impact. The project will not expose people to severe noise levels except for operators and maintenance people entering the standby power generator building when the generator is in operation. In this case the operators and maintenance personnel will be required to wear personal ear protection devices. XI. PUBUC SERVICE. a. No Impact. No additional impacts to City of Carlsbad fire protection as a result of this project. b. No Impact. No additional impacts to City of Carlsbad police protection services as a result of this project. c. No Impact. No additional impacts to schools as a· result of this project except that recycled water will be made available for irrigation water at some of the schools. The water quality will meet or exceed the requirements of State Health Services for unrestricted use of the recycled water. d. No Impact. No additional impacts to maintenance of existing public facilities or roads. e. No Impact. No additional impacts to other governmental services. XII. UTILITIES AND SERVICE SYSTEMS a. No Impact. The project is not of a scale to create a need for new power or natural gas systems. b. No Impact. The project will not result in a need for new commW1ication systems. 27 Rev. 03/28/96 c. No Impact. The projecL will not impact regional or local water treatment or distribution systems. However, additional water will be produced from the project which will lower the demand for potable water at some existing irrigation sites. d. No Impact. The project will not impact existing sewer or septic tanks. e. No Impact. No new storm drains or channels are required for this project. The sites are not within a I 00-year flood plain. f. No Impact. The project will not impact solid waste disposal systems. g. No Impact. The project will not impact local or regional water supplies. However, additional treated potable water would be made available since the project will produce recycled water for irrigation and industrial purposes. xm.· AESTHETICS. a. No Impact. No designated Scenic Highway or route or general public, scenic vista will be impacted by the project. b. Potentially Significant Unless Mitigatio11 Incorporated. Given the nature of the proposed public utility use (i.e. anticipated activities, structural installations, appearance etc.), a potential does exist for adverse visual impacts on surrounding land uses unless mitigation is incorporated. · The water recycling plant site is located in an area characterized by a mix of landuses. Potentially impacted---- land uses in the vicinity include residential to in east (on the other side of the freeway) and a developing multi-family project to the southwest of the site. Also, but to a lesser degree, commercial uses to the south of the site may be impacted. Mitigation measures can minimize potential impacts to a level of insignificance and have been incorporated accordingly. They relate to requirements that the project complete the City's development review process and special requirements for screening of operations and/or enclosure of equipment, enhanced building architecture, and enhanced perimeter landscaping. Three pump station sites are proposed. One is proposed in relatively remote !<;>cation along an existing, unpaved utility access road near Lake Calavera and impacts/incompatibilities are expected to be less than significant. Two are located in prominent locations along existing, or planned, major arterials. Mitigation measures can minimize potential visual impacts to a level of insignificance. The pump stations are subject to the conditional use permitting and development review process. Additionally special design requirements, or mitigation, have been developed. For the pump station proposed near the comer of El Camino Real and Palomar Airport Road, mitigation involves locating the facility underground and requiring the CMWD to work with the property owner in integrating the installation into monument signage/hardscape and landscaping for the Bressi Ranch Development. For the pump station proposed at the existing tank site off Poinsettia Lane, mitigation consists of a architecturally enhanced structural enclosure and screening landscape. c. Potentially Significant Unless Mitigation Incorporated. There will be outside lighting at the proposed water reclamation plant. However, all exterior and parking lot lights will be of low reflective mercury or sodium vapor type. The booster pumping station sites will have security lighting only at major doorway entrances. XIV. CULTURAL RESOURCES. a. No Impact. The proposed water recycling plant site, 2 pump station sites, pipelines and work proposed at the Mahr reservoir site are in areas already disturbed by grading, agricultural cultivation or previous excavations for adjacent structures. Therefore no impact to paleontological resources is anticipated. For the third pump station site proposed near the Lake Calavera, recorded 28 Rev. 03/28/96 ' ( paleontological resource maps on file in the Planning Division indicate concentrations of resources near the site. The distance is far enough however that no impact is anticipated. · b. Potentially Significant Unless Mitigation Incorporated. As indicated above, the proposed water recycling plant site, 2 pump station sites, pipelines and work proposed at the Mahr reservoir site are in areas already disturbed by grading, agricultural cultivation or previous excavations for adjacent structures. Therefore no impact to archeological resources is anticipated at those sites. For the third pump station site proposed near the Lake Calavera, however, recorded archeological resource maps on file in the Planning Division indicate concentrations of resources in close proximity to the site. Since archeological resources often tend to be scattered, a potential does exist that resources may be located on the pump station site. Based Qn staffs review of the records it does not appear that any resources would be considered a "unique archeological resource" as. defined in Section 21083 .2 of CEQA. (Provided they are, and in all likelihood they would be, similar to recorded finds in the vicinity). Nonetheless, any resource would have value and a mitigation measure has been incorporated into the project that requires that the CMWD have a qualified archeologist on-site during excavation to recover any resources which are found. c. No Impact. Based on site visits and historical use of the properties, there are no historical resources on any of the sites. d. No Impact. There are no unique ethnic cultural impacts associated with any of the locations. None were identified in adjacent land development projects; e. No Impact. There are no existing religious uses within the proposed sites. ~----. - XV. RECREATIONAL. a. No Impact. The project will not result in the need for more parks or other recreational facilities. b. No Impact. The project will not impact any existing recreational opportunities such as parks, public trails, beach access etc. 29 Rev. 03/28/96 ...................................................... liiiiii ...................... ~ .. ~,-·~··.~····~····=<~ i m. EARLIER ANAL \v,:;S USED The following documents were used in the analysis of this project and are on file in the City of Carlsbad Planning Department located at 2075 Las Palmas Drive, Carlsbad, California, 92009, (760) 438-1161. extension 4471. 1. Final Master Environmental Impact Report for the City of Carlsbad General Plan Update (MEIR 93- 01 ), dated March 1994, City of Carlsbad Planning Department. 2. Archaeological Test Report for Prehistoric Site CA-SDI-6819 Carlsbad, CA. By Gallegos & Associates. 1992. 3. SOIL SURVEY, San Diego Area, California, United States Department of Agriculture. 1973. 4. Preliminary Geotechnical Investigation, Two Proposed 8.2 Million Gallon Water Storage Tanks, by Leighton and Associates. 1992. 5. Limited Site Investigation at Avenida Encinas Property for the Encina Water Authority, by Dudek & Associates. 1995. 6. Poinsettia Promenade Carlsbad, Californiappdate Report, by Geocon Inc. 1996. 7. Carlsbad General Plan, by City of Carlsbad. 1994. 8. Avenida Encinas Geotechnical Report,·. by Cardiff Geotechnical Consulting Engineers and Geologists. 1993. 9. Water Quality Control Plan, by Regional Water Quality Control Board, San Diego Region. 1994. 10. Integrated Resources Plan, by Metropolitan Water District of Southern California. 1995. 11. Water Resources Master Plan, by Dan Diego County Water Authority. 1997. 12. Appraisal Report for the site located between 1-5 and north sides of the 6300-6700 blocks of Avenida Encinas, by Donald P. Falk, MAI. 1994. 13. Geotechnical Report for Palomar Airport Road East To El Camino Real by Kleinfelder. 1990. 14. Supplemental Geotechnical Investigation, Calavera Hills Subdivision by Southern California soil & Testing. 1983. 15. Preliminary Design Report for the Carlsbad Water recycling Facility by Black & Veatch. 1999. 16. City of Carlsbad Habitat Management Plan. City of Carlsbad Planning Department. 1999. 30 Rev. 03/28/96 LIST OF MITIGATING MEA12llRES <IF APPLICABLE} 1. The Carlsbad Municipal Water District, or their designee, shall submit applications for a zone change, and for a General Plan amendment, to change the zoning/land use designation of the site, or that portion of the site proposed to be developed with public utility uses, from Planned Industrial/Office to Public Utility. If a land use/zoning designation change is sought for only a portion of the site, the remaining portion shall remain Planned Industrial/Office and the request to amend the General Plan/zoning shall be accompanied by a request for a minor subdivision to divide the site in alignment with the land use/zoning boundary. 2. The Carlsbad Municipal Water District, or their designee, shall submit an application to amend the City's Local Coastal Program as it relates to the proposed public utility use of the Avenida Encinas site. Approval of the amendment by the California Coastal Commission shall be obtained, prior to the issuance of any permit or beginning any construction activities. 3. The project is subject to the City's development review process. The Carlsbad Municipal Water District, or their designee, shall submit a complete application package for a Precise Development Plan, Conditional Use Permit, and Coastal Development Permit to the Planning Department, prior to the issuance of any permit or beginning any construction activities. 4. The project is subject to compliance with the all applicable standards and requirements of the Engineering, Building and Safety, and Fire Protection Service Divisions. Compliance shall be reviewed by the City through the development review process and obtained and/or demonstrated prior to the issuance of any permit or beginning any construction activities. ----. ---- 5. The project is subject.to the City's Agricultural Land Conversion Mitigation program. The Carlsbad Municipal Water District shall submit the required mitigation fee, as calculated by the Planning Director, to the Planning Department prior to the issuance of any permit or beginning any construction activities., 6. The Carlsbad Municipal Water District shall obtain all the necessary clearances from the San Diego Regional Water Quality Board. The CMWD shall demonstrate compliance to the Planning Director, prior to the issuance of any permit or beginning any construction activities. · 7. In the event that State Division of Mines and Geology permitting requirements would necessitate disruption to natural vegetation areas along or adjacent to the downstream face of the Mahr Reservoir, the Carlsbad Municipal Water District shall notify the Planning Department of the issue and engage the services of a qualified specialist to survey biotic resources. The completed survey shall be submitted to the Planning Department for review where the appropriate State and/or Federal permitting procedures shall be identified. The required State and/or Federal permitting procedures shall be completed by the CMWD prior to the issuance of any City permit relating to the work and prior to beggining any construction activities involving the subject area. 8. The Carlsbad Municipal Water District, or their designee, shali utilize "micro tunneling", "directional drilling", or other similar non-disruptive technologies when installing water pipelines through natural vegetated open space areas. An exhibit indicating the exact locations of any such condition shall be submitted with the development review application package. 9. The Carlsbad Municipal Water District, or their designee, shall ensure the attendance of a qualified archeologist on-site during excavation of the pump station site located near Lake Calavera. In the event of discovery of archeological resources, the CMWD shall be responsible for adhering to the City's accepted standards of recovery and recordation. 10. The pump station, proposed at the intersection of El Camino Real and Palomar Airport Road, shall be designed as a subterranean facility. Additionally, the Carlsbad Mllllicipal Water District shall work with the owner of property located at the comer of El Camino Real and Palomar Airport _Road 31 Rev. 03/28/96