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MOUNTAIN HOUSE NEIGHBORHOOD"F"PROJECT INITIAL STUDY E. UTILITIES AND SERVICE SYSTEMS Utilities addressed below in the checklist questions include water and wastewater service, solid waste, and storm drainage. Storm drainage is also addressed below under"Hydrology and Water Quality" (Section J). Sewer and storm drain facilities for the project would be funded by user charges levied against all future properties by the Mountain House Community Services District(CSD). Domestic water service to the project site is to be provided by the CSD. The Byron Bethany Irrigation District(BBID), under contractual arrangements with the CSD, is providing raw water supply to the CSD. All land within Neighborhood"F"has been annexed to the BBID and CSD. New water facilities to be constructed include the following: raw water intake pump station along the California Aqueduct;raw water pipeline from the Aqueduct to the water treatment plant; and first phase of the water treatment plant treated water distribution lines from the treatment plant to the wastewater treatment plant and Neighborhood"F". The water treatment plant was subject to separate environmental review under a Negative Declaration. Thus, this Initial Study only evaluates potential impacts associated with extending water lines to the project site. As of July, 2000, a Senate Bill (SB 2095)was pending in the State of California regarding a requirement for the use of reclaimed water as part of the Subdivision Map Act process. SB 2095, as passed by the Senate, proposes that the Subdivision Map Act include a requirement that prior to approval of a tentative map, the legislative body of the city or county would have to first make a finding that recycled water is available to a subdivision. If such water is available, a condition must be put on the tentative map that a non-potable water system is required. Such recycled water would be required for golf courses, parks, greenbelts, landscaped streets and landscaped medians. At the time of preparation of this Initial Study, SB 2095 had not been formally adopted and signed into law, but is to take effect January 1, 2001 if adopted. Depending on the outcome and riming of this legislation,this project may be subject to such requirements. The CSD now has a provision for reclaiming water for storage and disposal north of Byron Road, under the terms of its permit with the Regional Water Quality Control Board. Wastewater service to the project site is to be provided by the CSD. A wastewater treatment plant would be constructed north of Neighborhood"F",just north of Byron Road within the boundaries of the Mountain House New Community(see Figure 3). The water and wastewater treatment plants for the project are being developed with private funding and plans for these facilities are currently(July 2000) being reviewed by the County Building Department. The CSD Board of Directors has accepted the construction plans and specifications for the treatment plants. As part of the proposed subdivision, these plants will be constructed on a phased basis. Other infrastructure to be constructed in phases includes: interim storm protection facilities and electric, gas and telecommunication facilities. Prior to approval of the first Final Map for the project, the infrastructure Master Plans or any revisions are to be approved by the CSD. These plans are to address storm drainage and flood control, water distribution and treatment, and sanitary sewer collection and treatment. A"will serve" letter from the CSD is required for public water, wastewater service, drainage and street lighting,prior to or concurrently with the filing of the Tentative Map for Neighborhood"F". This letter was submitted with Trimark's application. The"will serve" letter states that the following plans are to be adopted by the Board of Supervisors prior to Tentative Map approval: • Updated Financing Plan and associated financing ordinances and agreements • Farm Irrigation Plan C:1J0BSISJC\INPf1AL=YVINALINMALMMY-PARTI.DOC(7/20/00) 46 V.E.UTILITIES AND SERVICE SYSTEMS