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HomeMy WebLinkAboutPacific Gateway MND 05-4 Section 5-16 Utilities ~lr&~ 11.. -~~~~~;l~~ l- .... /2..~~. 0 '<,. ~t ~; ~j ~*~ ~2 .j ~~ ~.~~ ~~\f-}~~Ji~ \~"'~~1',q " ',,;~~~i 'r c.Q.~""'~~\; ~,' ~~!1!!1-Y7 Pacific Gateway Plaza Initial Study and Mitigated Negative Declaration 5.16 UTILITIES AND SERVICE SYSTEMS Potentially Potentially Significant Less Than No Would the project: Significant Unless Significant ~~ Impact Mitigation Impact Incorporated a. Exceed wastewater treatment requirements of the applicable Regional Water Quality Control T Board? b. Require or result in the construction of new water or wastewater treatment facilities or expansion of existing facilities, the construction T of which could cause significant environmental effects? c. Require or result in the construction of new storm water drainage facilities or expansion of T existing facilities, the construction of which could cause significant environmental effects? d. Have sufficient water supplies available to serve the project from existing entitlements and T resources, or are new or expanded entitlements needed? e. Result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to T serve the project's projected demand in addition to the provider's existinQ commitments? f. Be served by a landfill with sufficient permitted capacity to accommodate the project's solid T waste disposal needs? g. Comply with federal, state, and local statutes T and regulations related to solid waste? h. Would the project include a new or retrofitted storm water treatment control Best Management Practice (BMP) (e.g. water quality treatment basin, constructed treatment T wetlands), the operation of which could result in significant environmental effects (e.g. increased vectors and odors)? (a) Exceed wastewater treatment requirements of the applicable Regional Water Quality Control Board? Less Than Significant Impact. The Santa Ana Regional Water Quality Control Board (SARWQCB) protects ground and surface water quality within the Project Area. The SARWQCB has adopted National Pollutant Discharge Elimination System (NPDES) Permits and Waste Discharge Requirements (WDRs), which regulate discharges into the City's water supply. The proposed Project would be required to comply with the conditions of the NPDES permit, both during construction activities and during operations. Thus, no significant impacts are anticipated in this regard. Also, refer to Response 5.16(b). Mitigation Measures: No mitigation measures are required. Draft - September 2005 5.16-1 Utilities and Services Systems ~lr&~ 11.. -~~~~~;l~~ l- .... /2..~~. 0 '<,. ~t ~; ~j ~*~ ~2 .j ~~ ~.~~ ~~\f-}~~Ji~ \~"'~~1',q " ',,;~~~i 'r c.Q.~""'~~\; ~,' ~~!1!!1-Y7 Pacific Gateway Plaza Initial Study and Mitigated Negative Declaration (b) Require or result in the construction of new water or wastewater treatment facilities or expansion of existing facilities, the construction of which could cause significant environmental effects? Potentially Significant Unless Mitigation Incorporated. Wastewater The Project site utilizes collection facilities currently operated by the City of Seal Beach that are connected to facilities operated by the Orange County Sanitation District (OCSD). A private 8-inch sewer line carries wastewater west to east along Seal Beach Boulevard to a private 18-inch sewer line, with flows routed to the City-owned Boeing Pump Station located south of the Project site. The Boeing Specific Plan fiR indicates that flow rates for the hotel are estimated to be 225 gallons per day (gpd) per room, 2,090 gpd per acre for commercial uses. Therefore, development of a 11 O-room hotel and a total of 19,237 square feet of restaurant/retail uses would generate approximately 17.19 gpm of wastewater. Note that the Boeing Specific Plan concluded a less than significant impact to wastewater facilities assuming development of the Project site with a 120-room hotel and 32,500 square feet of commercial uses. Therefore, the Project impact on wastewater facilities would be less than significant. The City's Boeing Pump Station is a wet well/dry well facility, which services the entire Boeing facility as well as the commercial lots located at the southwest corner of Seal Beach Boulevard and Westminster Avenue. The pump station was originally constructed in 1966 consisting of three 1,050 gallons per minute (gpm) capacity pumps. More recently the City maintained two 1,050 gpm pumps in operation. The station was at the end of its service life and was replaced in September 2003 by a new 490 gpm pump station. The existing pump station consists of an 8-foot by 14-foot by 25-foot deep precast concrete dry well housing three submersible 30 horsepower vortex-type pumps.1 The dry well contains ventilation equipment, a sump pump, and stairway access from the surface. The wet well acts more as a flow-splitting structure than as a storage device. Storage for pumping is provided in the influent sewer which surcharges during normal pump cycling. Current flows estimated from pump running hours are only 32 gpm on average.2 The influent sewer to the pump station is an 18-inch VCP line that is approximately 19-feet deep.3 The depth is required to serve some of the below-grade areas at the entire Boeing site. This line also provides storage for the pump station, and surcharges during normal pump operation. According to the Boeing Specific Plan Project EIR, the existing Boeing Pump Station would service proposed development within the Project site. Therefore, the Project would not result in a need to construct a new waste treatment plant or local facilities. However, mitigation measures are included to ensure impacts remain below a level of significance. Water The City of Seal Beach has two sources of water supply: local groundwater from Orange County Main Groundwater Basin and imported water from Metropolitan Water District of Southern California (Metropolitan) through Municipal Water District of Orange County (MWDOC). City of Seal Beach Sewer System Master Plan, February 1999, page 6-15. Ibid. Ibid. Draft - September 2005 5.16-2 Utilities and Services Systems ~lr&~ 11.. -~~~~~;l~~ l- .... /2..~~. 0 '<,. ~t ~; ~j ~*~ ~2 .j ~~ ~.~~ ~~\f-}~~Ji~ \~"'~~1',q " ',,;~~~i 'r c.Q.~""'~~\; ~,' ~~!1!!1-Y7 Pacific Gateway Plaza Initial Study and Mitigated Negative Declaration Groundwater The water supply resources in Orange County are enhanced by the existence of a large groundwater basin. The City of Seal Beach Water Division operates groundwater producing facilities in the Orange County Groundwater Basin (Basin). The City of Seal Beach produces, on the average, 3,000 acre-feet of water per year (AFY) from the Orange County groundwater basin. The water is produced by three active wells, from an average depth of 800 feet. Although there has been some saline intrusion into the upper aquifers of the basin, it has not affected the strata from which the City wells produce. Water quality is within standards set for acceptable drinking water by the Federal government and the California Department of Health Services. Imported Water Treated imported water is supplied to the City from the importation and delivery system of Metropolitan. Metropolitan delivers water through the institutional arrangements with MWDOC at the service connection referred to as OC-35. MWDOC in turn delivers water supplies to the facilities owned and operated by West Orange County Water Board (WOCWB), a joint powers agency, of which the City is a member. The City owns 14 percent of the WOCWB facilities with an estimated delivery capacity of 4,600 gpm, equivalent to 7,435 AFY. The City has not traditionally utilized its full capacity from this source. Therefore, in this assessment only 2,700 gpm, equivalent to 4,300 AFY, which represents the City's normal usage, has been used for comparison purposes. Imported water supplies are subject to availability. To assist local water providers in assessing the adequacy of local water supplies that rely in whole or in part on Metropolitan imported supply, Metropolitan has provided information concerning the availability of the supplies to its entire service area. This report, entitled "Report on Metropolitan's Water Supplies" (February 11, 2002) ("Metropolitan Report"), is consistent with Metropolitan's Regional Urban Water Management Plan (December 2000) (RUWMP). The establishment of a comprehensive management plan for dealing with periodic surplus and shortage conditions is documented in the RUWMP and Metropolitan Report No. 1150, Water Surplus and Drought Management Plan. The Boeing Specific Plan fiR concluded that a less than significant impact would occur. Mitigation measures are included in order to ensure that impacts remain below a level of significance. The existing and proposed water lines that would be included as part of the proposed Project would provide sufficient infrastructure to service the Project site. Mitigation Measures: UTIL 1 In order to ensure adequate service to the Project site, plans for the proposed wastewater collection system shall be approved by the Orange County Sanitation District and the City Engineer of the City of Seal Beach prior to the recordation of the final tract map. UTIL2 In order to ensure adequate service to the proposed subdivision and the individual building structures, plans for the proposed public water and wastewater systems shall be approved by the City Engineer of the City of Seal Beach prior to the recordation of the final tract map. A condition on the tentative map shall state that all public infrastructure improvement plans, including sewer, water, streets, traffic signals, and grading shall be approved by the City Engineer prior to the recordation of the tract map. This is in conformance with the subdivision map act and approval authority of the City Engineer. Draft - September 2005 5.16-3 Utilities and Services Systems ~lr&~ 11.. -~~~~~;l~~ l- .... /2..~~. 0 '<,. ~t ~; ~j ~*~ ~2 .j ~~ ~.~~ ~~\f-}~~Ji~ \~"'~~1',q " ',,;~~~i 'r c.Q.~""'~~\; ~,' ~~!1!!1-Y7 Pacific Gateway Plaza Initial Study and Mitigated Negative Declaration UTIL3 In order to ensure proper usage of water, the development shall be required to implement the Best Management Practices (BMPs) and conservation practices identified in the City's adopted UWMP 2002, Water Supply Assessment, and the California Urban Water Conservation Council. (c) Require or result in the construction of new storm water drainage facilities or expansion of existing facilities, the construction of which could cause significant environmental effects? Potentially Significant Unless Mitigation Incorporated. Located immediately west of the Boeing Specific Plan Project site is the Los Alamitos Retarding Basin. Operated by the Orange County Flood Control District (OCFCD), the basin's function is to accommodate runoff from the surrounding watershed. Due to the limited size of the proposed Project and the existing urbanized condition, additional impacts from storm water drainage facilities are not anticipated. The Project would not increase runoff since the site is already developed with impervious surfaces. In addition, the proposed Project would be subject to requirements of the NPDES, and Project storm drain improvements would be subject to City review and approval which would reduce impacts on the stormwater drainage systems. The following mitigation measures are recommended to ensure that storm water drainage impacts remain at or below existing levels. Mitigation Measures: UTIL4 Prior to the issuance of building permits, the applicant shall submit for approval of the City Public Works Department a Water Quality Management Plan (WQMP) specifically identifying Best Management Practices (BMPs) that shall be used on-site to control predictable pollutant runoff. UTIL5 Prior to the issuance of building permits, the applicant shall obtain coverage under NPDES Statewide Industrial Stormwater Permit for General Construction Activities from the State Water Resources Control Board. Evidence that this coverage has been obtained shall be submitted to the City Public Works Department. (d) Have sufficient water supplies available to serve the project from existing entitlements and resources, or are new or expanded entitlements needed? Less Than Significant Impact. As discussed above, the City obtains all of its water supply from the local groundwater basin as well as imported water. For emergencies, the City can obtain additional water from the MWD. The City operates three domestic fresh water wells which supply all districts on a routine basis. Approximately 25 percent of the City's water is purchased from MWD in order to guarantee availability of emergency supplies when the well water is short due to maintenance or breakdown. According to the City of Seal Beach General Plan, the City currently has two reservoirs with a total storage capacity of 7 million gallons. A 4 million gallon reservoir is located on Beverly Manor Road adjoining the San Diego freeway, and a 3 million gallon reservoir is situated on the Naval Weapons Station adjacent to Marina Hill. On average, 3.6 million gallons of water is issued each day within the community. Daily consumption varies between summer and winter usage. Due to the limited Project size, acquisition of additional water supplies would not be necessary to serve the proposed Project. Draft - September 2005 5.16-4 Utilities and Services Systems ~lr&~ 11.. -~~~~~;l~~ l- .... /2..~~. 0 '<,. ~t ~; ~j ~*~ ~2 .j ~~ ~.~~ ~~\f-}~~Ji~ \~"'~~1',q " ',,;~~~i 'r c.Q.~""'~~\; ~,' ~~!1!!1-Y7 Pacific Gateway Plaza Initial Study and Mitigated Negative Declaration According to the Boeing Specific Plan EIR, projected water supplies available during normal, single-dry, and multiple-dry water years would meet the projected water demand associated with the proposed Project. Additionally, the Project proposes a 110-room hotel (versus a 120-room hotel) and approximately 13,000 fewer square feet of commercial uses than what was accounted for in the Boeing Specific Plan. Thus, a less than significant impact is anticipated. Mitigation Measures: No mitigation measures are required. (e) Result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to serve the project's projected demand in addition to the provider's existing commitments? Less Than Significant Impact. Refer to Responses 5.16(a) and 5.16(b). Mitigation Measures: No mitigation measures are required. (f) Be served by a landfill with sufficient permitted capacity to accommodate the project's solid waste disposal needs? Potentially Significant Unless Mitigation Incorporated. Solid waste from the Project area that cannot be recycled or reduced is disposed of at the Olinda Alpha Landfill located near Brea. The total permitted capacity of this landfill is 74.9 million cubic yards, of which 50.2 million cubic yards is the remaining capacity4. The landfill is required to close in the year 2013 regardless of any additional available capacity. This facility currently permits a maximum disposal rate of 8,000 tons of refuse per day and requires an annual daily average not exceeding 7,000 tons. Currently, this landfill is accepting approximately 6,000 tons per day.5 Solid waste (including recycled materials) in the area is handled and transported by Consolidated Disposal. Consolidated Disposal is part of Republic Services, which is the third largest waste hauling servicer in the nation. Locally, Republic Services has 24 franchise contracts with municipalities in Orange and Los Angeles County and is the second largest department in the "open market" in Los Angeles County. The proposed project is anticipated to generate approximately 152.30 tons of solid waste per month based on generation rates available on the California Integrated Waste Management Board website.6 This represents approximately 0.08 percent of the 6,000 tons per day landfill capacity. Citywide recycling programs would apply to the proposed Project, and in accordance with source reduction laws, a source reduction program shall be prepared and submitted to the Director of Development Services for each future structure constructed on the subject properties to achieve a minimum 60 percent reduction in waste disposal rates. Therefore, because the size of the proposed Project is limited, the Project would not significantly increase the amount of solid waste generated by the City. However, the mitigation measures listed below has been included to ensure that impacts remain at a less than significant level. Solid Waste Facility Listing: http://www.ciwmb.ca.gov/SWIS/detail.asp?PG=DET&SITESCH=30-AB-0035&OUT=HTML, August 2005. Ibid. California Integrated Waste Management Board website (http://www.ciwmb.ca.gov/WasteChar/WasteGenRates/ default.htm). Information accessed August 2005. Draft - September 2005 5.16-5 Utilities and Services Systems ~lr&~ 11.. -~~~~~;l~~ l- .... /2..~~. 0 '<,. ~t ~; ~j ~*~ ~2 .j ~~ ~.~~ ~~\f-}~~Ji~ \~"'~~1',q " ',,;~~~i 'r c.Q.~""'~~\; ~,' ~~!1!!1-Y7 Pacific Gateway Plaza Initial Study and Mitigated Negative Declaration Mitigation Measures: UTIL6 The construction contractor shall reduce construction-generated waste that is disposed of at landfills according to State law by at least 50 percent. The contractor shall prepare a construction waste management plan explaining the practices that would be used to achieve this level of reduction. UTIL7 Prior to the issuance of building permits for the proposed structures, detailed construction plans shall be submitted to the Director of Development Services for approval, delineating the number, location, and general design of solid waste enclosures and storage areas for recycled material. UTIL8 The Project applicant/individual project applications shall adhere to all source reduction programs for the disposal of demolition and construction materials and solid waste, as required by the City of Seal Beach. Prior to the issuance of building permits, a source reduction program shall be prepared and submitted to the Director of Development Services for each structure constructed on the subject properties to achieve a minimum 60 percent reduction in waste disposal rates, including green waste. (g) Comply with federal, state, and local statutes and regulations related to solid waste? Potentially Significant Unless Mitigation Incorporated. Refer to Response 5.16(D. Mitigation Measures: Refer to Mitigation Measure UTIL6. h) Would the project include a new or retrofitted storm water treatment control Best Management Practice (BMP) (e.g. water quality treatment basin, constructed treatment wetlands), the operation of which could result in significant environmental effects (e.g. increased vectors and odors)? No impact. Although retrofitted storm water treatment control BMPs would be required for other planning areas of the Boeing site, according to the Boeing Specific Plan EIR, no treatment control BMPs are necessary for Planning Area 4, the Project site. Therefore, there will be no impact in this regard. Mitigation Measures. No mitigation would be required. Draft - September 2005 5.16-6 Utilities and Services Systems