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3 � <br /> a r'1tiL <br /> California Re�onal Water Quality C�ntrol Board <br /> Central Valley Region a <br /> Steven T.Butler,Chair <br /> Winston H.Hickox Gray Davis <br /> Secretary for Sacramento Main Office Governor <br /> Environmental Internet Address: http://www.swrcb.ca.gov/—rwgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 6C : <br /> 15 September 2000 �� b � %t <br /> Ms. Kama Harrigfeld <br /> Herum, Crabtree, &Brown <br /> 2291 West March Lane, Suite B <br /> Stockton, CA 95207 <br /> REVIEW OF WORK PLAN, FORMER CONNELL MOTOR TRUCK COMPANY, <br /> STOCKTON, SAN JOAQUIN COUNTY <br /> I have reviewed the 19 May 2000 Additional Site Assessment Work Plan submitted by Advanced <br /> GeoEnvironmental, Inc. (AGE) on behalf of Mr. Sheldon Heckman for the former Connell Motor Truck <br /> Sales at 2211 North Wilson Way in Stockton(site). Previous assessments found contamination present <br /> in soil and groundwater at the site, primarily adjacent to the truck lift building. Contaminants of concern <br /> are total petroleum hydrocarbons as diesel, gasoline, motor oil, and Stoddard solvent (TPHd, TPHg, <br /> TPHmo, and TPHss, respectively), benzene, toluene, ethylbenzene, and xylenes (collectively BTEX), <br /> and volatile organic compounds (VOCs). The objective of the work plan is to further assess the extent <br /> of contamination present at the site. <br /> The work plan proposes to advance three soil borings using cone penetrometer testing(CPT) technology. <br /> and install six monitoring wells using a hollow stem auger drill rig. The CPT borings will be advanced <br /> to approximately 100 feet below ground surface (bgs)to determine soil characteristics and extent of soil <br /> contamination. Four of the wells will be shallow and two will be deep. The work plan proposes to <br /> collect soil samples at lithologic changes. AGE will install the wells using two-inch diameter schedule <br /> 40 PVC casing and 20-foot, 0.02-inch slotted PVC well screens, spanning between 40 and 60 feet bgs in <br /> the shallow wells and 80 and 100 feet bgs in the deep wells. Following completion, AGE will develop <br /> and sample each well. Soil and groundwater samples will be analyzed for TPHd, TPHmo, TPHss, and <br /> VOCs. <br /> I have the following comments on the work plan: <br /> 1. The work plan describes the site as consisting of three parcels with various lessees, and the site <br /> map shows three different locations for the site. However, the work plan states that this <br /> investigation addresses only one parcel (APN No. 117-150-031). AGE needs to identify the <br /> parcel addressed by this investigation in Figure 1 and clarify the relationship with the other <br /> parcels noted in the text. <br /> California Environmental Protection Agency <br /> co Recycled Paper <br />