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Mn Michael Infurna L../ <br /> June 17,4997 <br /> Page 2 <br /> that those wells are,no longer useful for monitoring in connection with the ongoing <br /> investigations of the separate regional solvent,plume or the nearby Bokides site situations. In <br /> a letter to the County dated May 6x;;1997,the State ward recommended that the County doge <br /> the site and infortn the responsibleparty of the ongoing need to maintain the wells.. <br /> In our is.evqral subsequent discussions, you indicated that the County will issue <br /> the long-awaited.closure Fetter immediately upon occurrence of the followiig: 1) destrucon <br /> of the six onsite vapor extraction wells, )reaching an agreement withTSC and the <br /> Regional"Board as to which of the five groundwater monitoring wells..will stay open, (3J. <br /> receipt ofa commitment by a responsible partyto keep such wells:open. <br /> Texaco;.acting:on behalf of the settling litigants,hereby agrees to satisfy each <br /> :of these conditions as follows; <br /> 1. 'Texaco will retain Advanced GeoBnvironmental :Inc. of Stockton to <br /> abandon the six vapor extraction wells. Advanced will prepare a well abandonment work <br /> plan, and:a Site HealthandSafety Plan, both of which will be submitted to your office for <br /> approval. Advanced will then obtain a wellabandonment permit from your office, destroy <br /> the six wells by pressure grouting, and=submitto your office a letter report describing the <br /> abandonment process. <br /> . 'Texaco will ensure that all five groundwater wells are maintained.. <br /> Given the impending court deadline of rune 30, and the substantial additional time which <br /> would likely be necessary to reach;agreement with ITSC and the Regional Board regarding <br /> maintenance of a:reduced number of wells,Texaco believes that the most prudent course of <br /> action is to have all five groundwater wells remain open in order that these agencies and the <br /> responsible parties can later determine which wells are necessary for the separate solvent <br /> plume and Bokides site investigations. This fully satisfies the concerns;expressed by the <br /> RegionAt,oard, State Board and D►TSC. <br /> 3`: The five groundwater wells will be maintained as fwl6wg. Firgt,Me1. <br /> ;Bokides Petroleum,Inc. willadopt well.M�N5,which is located in the sidewalk adjacent to. <br /> the.Bokides site. A confirming-letter ftrcrm counsel for Bokides is attached: Seconal, Texaco <br /> will.ma ntain'the other four gr aundwater'wells until an agreement is reached;with DTSC and <br /> Ow Regional Board regarding use of these wells in connection with the separate solvent: <br /> plume and Bokiides situations, or three.years,whichever crimes first. As part of this effort,. <br /> Texaco will retain Advanced Geo ental, Inc. who will submit a well monitoring <br /> work plan.to your office for approval, atmitally'inspect each well and measure the depth to <br />