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`✓ MOUNTAIN HOOSE PROPOSED MACHADo TENTATIVE MAP 4.ENVEtoNMENTAL CHECKLLST <br /> Nw 4.16 UmniES AND SERVICE <br /> through sanitary sewers, treatment,and land disposal or discharge to Old River. The current <br /> ` capacity of the wastewater treatment plant(W WTP) is three mgd(Karam,2006). Storm <br /> drainage includes storm drains,water quality basins, and improvements to Mountain House <br /> Creek. Details regarding these utilities are presented in the SPIIIEIR(EDAW, 2005b). <br /> V <br /> SIGNIFICANT IMPACTS IDENTIFIED IN 2005 SPIIIEIR <br /> `. Five potential impacts were identified in the 2005 SPIIIEIR. All five were found to be less <br /> ` than significant. The potential impacts included demand for water supply,demand for water <br /> infrastructure, demand for wastewater treatment and disposal capacity,demand for <br /> wastewater infrastructure,and demand for electricity and natural gas supply and <br /> `. infrastructure. <br /> FINDINGS RELATED TO SIGNIFICANT IMPACTS IDENTIFIED IN 2005 SPIIIEIR <br /> Since all the potential impacts were found to be less than significant, there are no related <br /> findings identified in the 2005 SPIIIEIR. <br /> r. <br /> DISCUSSION REGARDING PROPOSED PROJECT <br /> •r a) Exceed wastewater treatment requirements of the applicable Regional Water Quality <br /> Control Board? <br /> %W <br /> The proposed project would generate wastewater that would be treated at the MHCSD <br /> W WTP. MHCSD has obtained two permits from the Central Valley Regional Water Quality <br /> Control Board(RWQCB): one for discharging 5.4 mgd of treated wastewater into Old River <br /> taw on a year-round basis,and the other for land disposal of 2.6 mgd of treated wastewater. At <br /> %W the present time,treated wastewater from the W WTP is disposed of on land located north and <br /> ` northwest of the W WTP. River discharge is expected to commence by the end of 2006 once <br /> MHCSD has satisfied the pre-discharge requirements of the Central Valley RWQCB permit <br /> `' (Karam, 2006). Until then,land disposal of treated wastewater will continue. Regardless of <br /> `w the method of disposal,wastewater treatment and disposal must comply with the permits <br /> issued by the RWQCB or the RWQCB would initiate enforcement actions that could include <br /> a cease-and-desist order. If corrective actions do not satisfy the RWQCB,it could impose a <br /> %W moratorium on new sewer connections. Thus,the wastewater treatment requirements will not <br /> tr, be exceeded and a less-than-significant impact would occur. <br /> Mitigation Measures <br /> No mitigation measures are required. <br /> b) Require or result in the construction of new water or wastewater treatment facilities or <br /> expansion of existing facilities, the construction of which could cause significant <br /> environmental effects? <br /> 4-85 <br /> �.r <br />