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California Regional Water Quality Control Board , a, . <br /> Central Valley Region crayDavis <br /> Robert Schneider,Chair Governor <br /> Winston H.Hickox <br /> Secretary jar Sacramento Main Office <br /> Environmental Internet Address: http://www.swrcb.ca.gov/mgcb5 �//�'="I <br /> „ LC <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> JAN 2 3 2003 <br /> 22 January 2003 ENVIRONMENT HEALTH <br /> PERMIT/SERVICES <br /> Mr. Peter Wallace,Jr. <br /> Former Hess DuBois Cleaners <br /> 7455 Pasaro Drive <br /> Scottsdale, AZ 85262 <br /> REVIEW OF CONE PENETROMETER TESTING REPORT, FORMER HESS DUBOIS <br /> CLEANERS, STOCKTON, SAN JOAQUIN COUNTY <br /> We have reviewed the 8 January 2003 Cone Penetrometer Testing Report(Report) submitted by <br /> Advanced GeoEnvironmental, Inc. on your behalf for the Former Hess DuBois Cleaners at 348 <br /> Harding Way in Stockton(site). The Report discusses the grab groundwater results from seven <br /> cone penetrometer testing(CPT) locations. The results show that the lateral and vertical extent <br /> of total petroleum hydrocarbons as Stoddard solvent and volatile organic compound constituent <br /> pollution is not delineated. The Report recommends continued quarterly monitoring from <br /> existing monitoring wells, installation of a monitoring well northeast of CPT location 6 to <br /> delineate the lateral extent of pollution, and the installation of a multi-level monitoring well in <br /> the area of Monroe Street to determine the lateral extent of pollution. <br /> Board staff concurs with the recommendations in the Report, but the extent of contamination in <br /> the soil has not been investigated. In addition, you need to check with Mr. Mike hifurna of the <br /> San Joaquin County Environmental Health Department regarding regulations for multi-level <br /> monitoring wells. By 21 March 2003,please submit a work plan to install the recommended <br /> monitoring wells as well as to collect soil vapor samples to delineate the lateral extent of <br /> pollution in soil. The work plan should be prepared in general accordance with the attached <br /> Items To Be Included In a Site Assessment Work Plan. If you have any questions, you may <br /> contact me at (9`1-6) 255-3119 or by email at lewisd(c)rb5s.swrcb.ca.gov. <br /> L\� � tz�' <br /> DEVRA LEWIS <br /> Environmental Scientist <br /> Attachment <br /> cc: Mr. Mike Infurna, San Joaquin County Environmental Health Department, Stockton <br /> Mr. William Little,Advanced GeoEnvironmental, Inc., Stockton <br /> California Environmental Protection Agency <br /> �a Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/rwgcb5 <br />