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organic material. Treatment plant effluent water would be piped to the trench and dispersed through a 4-inch diameter, slotted, steel pipe over the entire length of the trench. Pipe slotting would be oriented toward the top of the pipe, to allow the pipe to fill completely, therefore assuring equal distribution of treated water over the length of the trench. The proposed infilrration gallery area would be located under a concrete slab which will become a trucking lane as part of Sebastiani's expansion plans for the Woodbridge Cellars facility. Provisions for trench access for repair and maintenance will be included in final design plans. Groundwater Recharge Wells In the event that groundwater recharge by infiltration trenching does not adequately accommodate the treatment plant effluent, operation of groundwater recharge wells may be a feasible alternative for groundwater recharge. Recharge wells could operate in conjunction with the infiltration gallery to augment the groundwater system recharge or could operate separately as a groundwater recharge alternative. Recharge well design could require that deeper aquifer units be utilized for groundwater recharge. This would result in a need for additional investigative drilling and characterization of the hydraulic properties. of lower aquifer units to establish their potential recharge rates. Due to available space constraints within the site facilities, a potential recharge well field would most likely be located approximately 400 to 500 feet south of the proposed groundwater treatment system. Recharge in this area would not result in any adverse impacts on groundwater controls established by the downgradient groundwater extraction system. PERMITTING REQUIREMENTS The San Joaquin County Air Pollution Control District requires permitting for in-situ soil venting of VOCs under Rule 409.9. This rule requires that the soil venting system operate at a 90% control rate. As previously stated, the proposed soil venting system will operate well within the rule requirements. A minimum period of approximately eight weeks will be required by the District to process the permit application, during which time the District will conduct risk assessment screening to confirm that the proposed system control rate is adequate. A permit to operate a volatile organic compound air stripping tower will be required for the groundwater treatment system. The permit is require? under SJCAPCD Rule 209.1. This rule requires Best Available Control Technology (BACT) be provided for an airstripper treatment system. ----- -- - - -- - -----However-,--the--SJCAPCD-has-indicated-in- telephone..communications_-_that VOC air emissions of less than 5 pounds per day may be considered the equivalent of BACT. Since, as previously shown, air emissions from the 24