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1*4100'4% California69 V <br />ional Water Quality Con Board :<<. <br />Central Valley Region' :I <br />Robert Schneider, Chair \� f <br />Linda S. Adams Arnold <br />Secrelaryjor ' Sacramento Main Office Schwarzenegger <br />Environmental 1 1020 Sun Center Drive #200, Rancho Cordova, California 95670-6114 Governor <br />Protection Phone (916) 464-3291 • FAX (916) 464-4645 <br />http://www.waterboards.ca.gov/centralvalley <br />,U <br />c � El <br />25 August 2006 AUG3 0 2000 <br />W. Michael Carroll, P.E ENVIRONMIFLAT HEAL1.H <br />County of San Joaquin PERfJ1*f/5ERVI0ES <br />Department of Public Works <br />P.O. Box 1810 <br />Stockton, CA 95201 <br />We have reviewed the subject reports, as prepared and certified by the San Joaquin County <br />Department of Public Works, Solid Waste Division. The reports were submitted by the <br />required due dates and are found to be complete. However, in accordance with Waste <br />Discharge Requirements (WDRs) No. R5-2002-0219 and Title 27, Section 20415, the <br />Discharger is required to retest monitoring wells containing detectable concentrations of <br />volatile organic compounds (VOCs) "at the same location to determine whether there has <br />been a release from the Unit or the detection was a false detection." Based on a review of the <br />1St and 2nd semester groundwater data, it appears the Discharger neglected to "retest" for <br />VOCs and other contaminants of concern (COC) as required by the WDRs and Title 27. <br />Future detects of VOCs and other COCs above the method detection limit (MDL) require <br />retest by the Discharger to comply with the WDRs and Title 27. Retests not conducted will <br />result in further enforcement by staff. <br />Enclosed is a Monitoring Report Compliance Checklist for your consideration. Please address <br />any issues discussed in subsequent reports. <br />If you have any questions, please call me at 916-464-4737. <br />Todd A. Del Frate <br />Engineering Geologist <br />Lower San Joaquin River Watershed <br />Discharge to Land Unit <br />Enclosure(s) Monitoring Report Compliance Checklist <br />cc: Robert McClellon, San Joaquin County Environmental Health Department, Stockton <br />Keith Kennedy, Permitting and Enforcement Division, CIWMB, Sacramento <br />TADM/:\San Joaquin County\North County\SMR Check list\Letter_SMR0806.doc <br />CIWQS VID #428556, #428557 <br />California Environmental Protection Agency <br />Qi Recycled Paper <br />