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- O <br /> antea'group <br /> Antea USA, Inc. <br /> 505 14th Street, Suite 900 <br /> Oakland, CA 94612 <br /> www,anteagroup.com <br /> December 6, 2013 rr <br /> i <br /> Victoria L. McCartney, REHS <br /> San Joaquin County Environmental Health Department <br /> . i <br /> 1868 East Hazelton Avenue r ' <br /> Stockton, California 95205 <br /> John Muniz, Jr, <br /> 11931 Mountain View Road <br /> Tracy, California 95376 <br /> Subject: Site Investigation Work Plan Addendum <br /> County Market <br /> 10476 W. Linne Road, Tracy, California 95376 <br /> San Joaquin Environmental Health Department Case No. R00002070 <br /> Antea Group Project No. CTRYMICT <br /> Dear Ms. McCartney: <br /> Antea®Group has prepared this Site Investigation Work Plan Addendum based on our October 17, 2013 teleconference <br /> with you and Mr. Nuel Henderson of San Joaquin County Environmental Health Department (SJCEHD) and per SICEHD's <br /> letter dated November 25, 2013. A modified scope of work to assess impacts due to former gasoline underground <br /> storage tanks (USTs) at the subject property is presented below. This modified scope of work replaces the previously <br /> submitted Site Investigation Work Plan dated August 19, 2013. <br /> 1.0 Proposed Boring Locations <br /> Antea Group proposes to advance two soil borings (SB-1 and SB-2) in the northwest portion of the site near the former <br /> USTs. The proposed boring locations are shown on Figure 1. <br /> A licensed C-57 driller subcontracted by Antea Group will advance these borings using dual tube direct push drilling <br /> equipment. Based on the documented depth of the tank bottoms and previously collected soil samples, boring SB-1 is <br /> proposed in the center of the former UST pit to a depth of 20 feet below ground surface (bgs), and boring SB-2 is <br /> proposed to the east of the former UST pit to a total depth of 10 feet bgs. <br /> Prior to drilling, the driller will clear each borehole location to a depth of 5 feet bgs using hand augering equipment. <br /> Upon completion of sampling activities, the borings will be backfilled with neat cement in accordance with SJCEHD <br /> requirements and the surface will be capped with black dyed concrete or cold patch asphalt to match the existing <br /> surface. <br /> xInogene ., W„ <br />