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INFORMATION SHEET FOR ORDER NO. -2- LINNE ESTATES, LLC LINNE ESTATES WASTEWATER TREATMENT SYSTEM SAN JOAQUIN COUNTY or nuisance will not occur and (b) the highest water quality consistent with maximum benefit to the people of the State will be maintained." Waters can be of high quality for some constituents or beneficial uses and not others. Policies and procedures for complying with this directive are set forth in the Basin Plan (including by reference State Board Resolution No. 68-16). Resolution No. 68-16 is applied on a case-by-case, constituent-by-constituent basis in determining whether a certain degree of water quality degradation can be justified. It is incumbent upon the Discharger to provide technical information for the Regional Board to evaluate that fully characterizes: • All waste constituents to be discharged; • The background quality of the uppermost layer of the uppermost aquifer; • The background quality of other waters that may be affected; • The underlying hydrogeologic conditions; • Waste treatment and control measures; • How treatment and control measures are justified as best practicable treatment or control (BPTC); • The extent the discharge will impact the quality of each aquifer; and • The expected degree of degradation below water quality objectives. The Regional Board must comply with California Water Code(CWC) Section 13263 in setting appropriate discharge conditions. The Regional Board is required, with respect to the waters of the State that may be affected by the discharge, to implement the Basin Plan and consider the beneficial uses to be protected along with the water quality objectives essential to protect those uses. The Regional Board need not authorize the full utilization of the waste assimilation capacity of the groundwater(CWC Section 13263(b)) and must consider other waste discharges and factors that affect that capacity. The WWTF was not constructed when this Order was prepared. However, certain waste constituents in domestic wastewater are not fully amenable to waste treatment and control and it is reasonable to expect some impact on groundwater quality. Some degradation for certain constituents is consistent with maximum benefit to the people of California as residential housing and wastewater treatment facilities are a necessity and therefore provide a sufficient reason to accommodate increases in wastewater discharge provided terms of reasonable degradation are defined and met. The proposed Order authorizes some degradation consistent with the maximum benefit to the people of the State. Three groundwater monitoring wells were installed in August 2003 in the dispersal area and two groundwater monitoring events have been performed. Based on data collected on 11 September 2003 and 29 December 2003, groundwater exists approximately 50 feet below the ground surface and flows to the northwest under a gradient of 0.001 ft/ft. Well MW-1 is likely to be established as the well upgradient of the dispersal area. A summary of the average groundwater quality is presented below: Well NO3 as N Chloride TDS VDS SC TCO FCO (mg/L) (mg/L) (mg/L) (mg/L) (µmhos/cm) (mpn/100 ml) (mpn/100 ml)