Laserfiche WebLink
0 0 <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> Robert Schneider,Chair <br /> Terry Tamminen Arnold Schwaraenegger <br /> Secretaryfor 11020 Sun Center Drive#200 Rancho Cordova,CA 95670-6114 Governor <br /> Environmental (916)464-3291•Fax(916)464-4704 <br /> Protection http://www.swrcb.ca.gov/mgcb5 ��//((��__ <br /> RECM V�,v/R <br /> ED <br /> 26 February 2004 <br /> MAR 0 1 2004 <br /> Mr. Dale Gillespie ENVIRONMENT HEALTH <br /> Geweke Land Development and Marketing PERMIT/SERVICES <br /> PO Box 1210 <br /> Lodi, CA 95241 <br /> WORKPLAN APPROVAL, CLEANUP AND ABATEMENT ORDER (CAO)NO. 93-701, <br /> GEWEKE PROPERTY, 16 SOUTH CHEROKEE LANE,LODI, SAN JOA QUIN COUNTY <br /> I reviewed the Additional Monitoring Well Installation Work Plan (Workplan), dated 30 November <br /> 2003, submitted on your behalf by Advanced GeoEnvironmental, hic.(AGE) In a letter dated 28 October <br /> 2003,I requested a Workplan for additional monitoring wells by 30 November 2003 per Cleanup and <br /> Abatement Order(CAO)No. 93-701, which requires that, if groundwater contamination is detected and <br /> confirmed in contaminant plume perimeter wells, additional monitoring wells will be installed to define <br /> the extent of groundwater contamination. Quarterly groundwater monitoring of downgradient offsite <br /> monitoring wells MW-7, MW-11, and MW-16 show consistent detections of 1,2-dichloroethane (1,2- <br /> DCA) over the last four quarters of groundwater monitoring. <br /> The Workplan is approved with the following modifications: <br /> • Soil borings will be continuously cored for lithology. Well screen placement will be based upon <br /> boring lithology. <br /> • Groundwater sampling and analysis will occur after 48 hours of new monitoring well <br /> development if quarterly sampling is more than 30 days away. If 30 days or less,then all wells <br /> will be sampled during the regularly scheduled quarterly event. <br /> • All perimeter wells and groundwater plume core wells MW-1,MW-8, MW-9,MW-14, and <br /> MW-16 will be sampled quarterly for all constituents. All remaining wells with detected <br /> groundwater contamination will be sampled quarterly for the detected constituents, and annually <br /> for remaining constituents. <br /> If you have any questions please contact me at(916)464-4615 or bartoni@rb5s.swrcb.ca.Rov. <br /> VJames L. Barton, R.G. <br /> cc: Mr. Harlin Knoll, San Joaquin County Environmental Health Division, Stockton <br /> Mr. Brian Millman, Advanced GeoEnvironmental, Incorporated, Stockton <br /> California Environmental Protection Agency <br /> Q?Recycled Paper <br />