SITE INFORMATION AND CORRESPONDENCE_1993-2003

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WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2002-XXXX 19 U.S. DEPARTMENT OF DEFENSE DEFENSE LOGISTICS AGENCY DEFENSE DISTRIBUTION DEPOT SAN JOAQUIN SHARPE GROUNDWATER REMEDIATION SYSTEM SAN JOAQUIN COUNTY contribution, the Discharger will improve and implement available analytical capabilities and compliance will be evaluated with consideration of the detection limits. b. After collecting the initial twelve months of data, twelve month mass loadings should be calculated for each calendar month. For monthly measures, calculate monthly loadings using average monthly flow and the average of all mercury analyses conducted that month (for each GWTP). After collecting the initial twelve months of data, the Discharger shall submit a cumulative total of mass loadings for the previous twelve months with each self-monitoring report. Compliance will be determined based on the previous 12-month moving averages over the previous twelve months of monitoring. 4. Survival of aquatic organisms in 96-hour bioassays of undiluted waste shall be no less than: Minimum for any one bioassay- - - - - - - - - 70% Median for any three or more consecutive bioassays - - - - 90% 5. Effluent shall not exceed the following limits: Daily Weekly 30 Day Monthly 12 Month Constituents Units Maximum Average Median Average Average Total Volatile Organic 9g/L(ppb) 1.0 <0.5 -- - Compounds lbs/day 0.016' 0.008' - -- Total Petroleum pg/L(ppb) 100 <50 -- - Hydrocarbons lbs/day 1.6' 0.8' -- - Arsenic (Total) µg/L(ppb) 502 402 105 lbs/day 0.812 0.631•2 0.16'5 Lead(Total) gg/L(ppb) 3.2' lbs/day 0.051" Mercury lbs/yr --- --- 0.042' Based upon maximum daily design treatment capacity of 1.9 mgd. 2 Interim limitation until 22 January 2006. ' Interim limitation pending additional data collection required by Provision E.2. Preliminary mass limitation until completion of Interim Mercury Mass Limitation Study of Provision E.3. 5 Effective 23 January 2006.