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ri1 � CRDER ND 5-00^11_9 <br /> ATTACI GNT B <br /> �1d0NITOR LNG AND RE,PORTZVG PROGRAI/I <br /> GENERAL ORDER FOR DISCHARGE TO <br /> *TJ-RFACE WATERS OF GROUND WATER <br /> FROM CLEAN`li'P OF PETROLEUM FUEL POLLUTION <br /> entering the receivingwater A dilution se;:es is not required if the receiving water i5 considered <br /> ephemeral 24-hour composite samples shall be representative of the volume and quality of the <br /> discharge Time of collection samples shall be recorded The effluent tests must be conducted nth <br /> concurrent reference toxicant tests Monthly laboratory ref:rence toxicant tests may be substituted upon <br /> approval Both the reference toxicant and effluent test must meet all test acceptability criteria as <br /> specified in the chronic manual IT the test acceptability criteria are not achieved, then.the Discharger <br /> rrlust re-sample and re-test within 14 days Chranic toxicity monitoring shall Include the following <br /> Species Pirrieuhales nrorr_elas Cenodaphma dubia, and Selenastrum canricornutum <br /> Frequency Once per year <br /> Dilution Series (If applicable) <br /> Dilutions {%1 Controls <br /> Receiving Lab <br /> 100 50 25 125 625 Water Water <br /> % WWTP Effluenr 100 50 25 125 625 0 0 <br /> % Dilution Water-* 0 50 75 87.5 93) 75 100 0 <br /> % Lab Water 0 0 0 0 0 0 100 <br /> * DJution water shall be receiving water from upstream in the receiving water, or out of the <br /> influence of the discharge If there is not dilution water in the receiving water unaffected by the discharge-,then a <br /> duuton seres test is not applicable The onlutaon series may be altered upon approval of 3oara staff <br /> REPORTING <br /> In reporting the monitoring data, the Discharger shall arrange the data in tabular forth so that the date, <br /> the constituents, and the concentrations are readily discernible The data shall be suuirnarized in such a <br /> Manner to illustrate clearly the compliance with waste discharge requirements. The highest daily <br /> maximuni for the month, monthly averages, and medians should be determined and recorded <br /> The report will also include an evaluation of the ground water cleanup progress, trends, monitoring well <br /> analyses and plume containment If this evaluation is already submitted to the Regional Board m a <br /> separate groundwater monitoring report, then the Discharger may reference the date and title of the most <br /> recent report in lieu of including it with the N-PDES mmtonng report <br /> Quarterly monitoring reports shall be subrnitted to the Regional Board by the 1st day of the second <br /> mouth following each calendar quarter (February, May, August, and November). If monitoring is <br /> done at a frequency less than that specified in the influent and effluent under "monitoring frequency" due <br /> to the allowance under "footnotes for influent and effluent monitoring, then justification must be <br /> Ifecified in each quarterly report as to the presence or non presence of that constituent during the last <br /> ee sampling event Failure to supply the justification for less frequent sampling, when sampling less <br /> frequent than specified in the Monitoring and Reporting Program, shall result in a Board determination <br />