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WASTE DISCHARGE 1:CEQLTfUMBNTS ORDER NO.R5-2003-0049 FORWARD INC'. AiIND ALLIED WASTE INDUSTRIES -23- FOR OPERATION OF -FORWARD CLASS Il LANDFILL SAN JOAQUIN COLLTTTY C, For Constituents Of Cottu rn: For five-yearly testing of all Constituents of Concern (COCs), the "qualifying constituents"consist of COCs that are detected in less than 10% of applicable backgroundsamples. The Discharger shall conduct verification testing(see Detection Ivionitoring Specifications E.21. and E.23 below, as appropriate)to determ.me whether a release of COCs has occuircd if the data for any monitoring point meets either of the following triggering conditions: 1) The data contains two or more qualifying constituents that equal or. exceed their respective MDLs; or 2) The data contains one qualifying constituent that equals or exceeds its PQL. 20. Noa-Statistical Method Retest. A,non-statistical test method may be used by the Discharger to analyze the monitoring data for which it is impractical to conduct a statistical analysis. A non.-statistical test method shall include a procedure to verify that there is "measttrab ly significant"evidence of a release froth the Unit. For the VOC,,, w, VOC,pg, and nonstatistieal COC test,the Discharger shall use a discrete retest consisting of two new saunplcs from each indicating monitoring point. The Discharger shall conduct the retest for the standard non-statistical method as follows: a. 'For VOCw;,t,,.and VOC,pg. Because the VOC composite Monitoring Parameter(for water or soil pore gas) is a single parameter which addresses an entire family of constituents likely to be present in any landfill release, the scope of the laboratory analysis for each of the two retest samples shall include all VOCs detectable in that retest sample. Therefore, a confirming retest, in accordance with Detection Monitoring Specification E.20.a. and b., above, for either triggering condition in either of the two retest samples, shall have validated the original indication even if the detected constituents in the confirming.retest sample(s) differs from those detected in the sample which initiated the retest.. b. For Constituents of Concern. Because all Constituents of Concern that are jointly addressed in the non-statistical test above, remain as individual Constituents of Concern, the scope of the laboratory analysis for the non-statistical retest of Constituents Of Concern shalt address only those constituents detected in the sample which initiated the retest. Therefore, the list of"qualifying constituents" for Ilse In the retest, under Detection Monitoring Specification R.20.c., shall,consist of those constituents which provided the original indication at that monitoring point. If the retest meets either triggering condition in either of the two retest samples, the retest shall have validated the original indication. 9Z d 0 H090£££9 'ON/99: N '1S/V0:til 9002 01 lWNON) WOdi