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. <br /> t <br /> LATE REVISIONS - 26 JUNE 1992 <br /> ITEM 7 - UNCONTESTED NPDES PERMITS- <br /> Item <br /> ERMITS Item 7. - EXXON COMPANY U.S.A., AND EDNA FILIPPI, FORMER EXXON RETAIL SITE <br /> 7-3942, GROUND WATER TREATMENT SYSTEM DISCHARGE, San Joaquin <br /> _ County (new) - <br /> page 7-1 Finding No. 3, add the last sentence: <br /> _ "Discharge to the storm drain is also subject to approval by the <br /> City of Stockton". . - <br /> page 7-3 Discharge Prohibition A.2, change "A.I2" to "A.I3" . <br /> page 7- 4 Insert Effluent Limitation B.4 to read as follows: <br /> "There shall be no acute toxicity in undiluted effluent. Acute <br /> toxicity is defined as less than ninety percent survival , fifty <br /> percent of the time, and less than seventy percent survival , ten <br /> percent of the time, of standard test organisms in undiluted <br /> effluent in 96-hour static or continuous-flow tests. " <br /> page 7-5 Provision No. I, insert new Provision I to read as follows, and <br /> renumber remaining Provisions: <br /> "Discharge of treated ground water into injection wells is <br /> prohibited until a feasibility study has been submitted and is <br /> approved by Board staff. The feasibility study shall include <br /> provisions for a preliminary test of the injection system and <br /> ground water monitoring points across Pershing Avenue to determine <br /> the impact of reinjection on the ground water elevation, flow <br /> regime, and contamination, and the effectiveness of the <br /> reinjection system as a hydraulic barrier. " <br /> f <br /> page 7-8 Effluent Monitoring, add additional monitoring as follows: <br /> f , <br /> Constituent Units Type of Sample Sampling Frequency <br /> "Bioassay". % Survival Grab Monthly" <br /> Insert footnote as follows: <br /> Test species shall be either Fathead minnows - Pimephales <br /> promelas or Golden Shiner - Notemigonus crysoleucas." <br /> t ! <br />` »»»»»»««««««< <br /> a <br /> t <br /> k <br />