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_ - I <br /> 1 <br /> I <br /> A-I l" <br /> ENV�RC3NMEIVTAI,IfC 3330 Cameron-Park Drive, Ste 550 <br /> Cameron Pork, California 95682 <br /> (530)676-6004-Fax:(530)676-6005 <br /> September 9, 2009 <br /> Project No. 2001.-0103-1 <br /> Mr. Harlin Knoll i <br /> San Joaquin County <br /> Environmental Health Department <br /> 600 East Main Street <br /> Stockton, California 95202 <br /> Subject: Addendum to Site Conceptual Model and <br /> Environmental Case Closure Request <br /> A. Teichert and Sons, Inc. Property <br /> 103 North E Street <br /> Stockton, California <br /> (Site Code No. 1555) <br /> .Dear Mr. Knoll: <br /> On behalf of A. Teichert and Sons, Inc. (Teichert), Stratus Environmental, Inc. (Stratus) <br /> has prepared this document for the Teichert property located at 103 North E Street, <br /> Stockton, California (the Site, see Figures l and 2). Ali underground storage tank (UST) <br /> fuel leak environmental case remains open at the subject property. A majority of'the <br /> petroleum hydrocarbon impact to the subsurface has been rernediated, However residual <br /> concentrations of select contaminants, most notably gasoline range organics (GRO) and <br /> 1,2-dichlorocthane (1,2-DCA), remain dissolved in.groundwater beneath the site. <br /> Based on our understanding of the distribution of contaminants in groundwater beneath <br /> the site, and on conversations and electronie,.mall correspondence with representatives of <br /> the Sall Joaquin County Environmental Health Department (SJCEIID) and/or the � <br /> California Regional Water Quality Control Board (RWQCB), between.June 24 and 26, <br /> 2009, closure of the environmental case at tile' subject property is appropriate. However, <br /> prior to further evaluating the environmental case for closure, SJCEHD and R'ATQCB <br /> personnel Have requested that water duality projections for GRO and 1,2-DCA be <br /> prepared at the site, using historical groundwater analytical data from wells containing <br /> the highest concentrations of each of tale selected contaminants. These water quality <br /> pl-oJectlons are included in this report. SJCEHD has also requested that available <br /> information regarding historical UST use at.the site be documented; and that lnformatloll <br /> regarding current property ownership_ be .provided. Tills report also .provides this ! <br /> requested information_ <br /> K:+F6dicrL%Stockton-103A4cporis\tciclicrt-addendum-closure 03-26-04.doe <br /> { <br />