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<br /> . TH"eITYO,. '3~~ <br /> . ,,'I <br /> \~ <br /> . <br /> . E-X-E-C-U-T-I-V-E S-U-M-M-A-R-Y <br /> --- <br /> . <br /> . In early 1989, suction lines between underground storage tanks and <br /> dispenser pumps at the former municipal fleet refueling depot were <br /> discovered to be leaking. The zone of heavy contamination was, and <br /> . is, l~ited to less than an acre. <br /> Subsequent to initial site characterization and cleanup activities, <br /> I which have been addressed in previous reports, remediaiton has been <br /> . l~ited to groundwater pumping and pre-treatment prior to discharge <br /> to the sewer system, with free-product recovery when it appears in <br /> wells. <br /> . Site remediation was conducted by Hazcorp EnvirOnmental, under <br /> contract to the City of San Marcos, until AprilS, 1992, at. which <br /> t~e the contract was terminated and staff of the Public Works <br /> . Department assumed operational control of the proj ect on an interim <br /> basis until "State Lead" could be obtained. <br /> . The City of San Marcos, by letter of July 27, 1992, requested that <br /> the Texas Water Commission assume "State Lead" of LPST 192680 <br /> Project. By letter of october 22, 1992, from Mr. Michael Bame , <br /> . P.G., Petroleum Storage Tank Division, receipt of request for <br /> "State Lead" was acknowledged and the city was instructed to <br /> continue with remediation until notification from the Storage Tank <br /> Contracts Section of their intent to take over site activities is <br /> received. As of this time, no notification has been received. <br /> Free product appearance in wells is at extended intervals and <br /> generally related to lowered groundwater levels. Some 1700 gallons <br /> of free product was recovered as cleanup began. An additional 490 <br /> gallons of fuel was recovered during fall-winter in 1991. During <br /> October-November, 1992, 24 more gallons of product was recovered. <br /> Due to widely intermittent appearance of free product, and possible <br /> off-site upgradient contribution of fuel pollution, the years that <br /> will be needed to cleanup site groundwater to TWC criteria levels <br /> based solely on pumping and pre-treatment is unknown. <br /> - 1 - <br /> Page 3 of 4 of <br /> Exhibit A <br /> City Hall. 630 East Hopkins. San :\farcos, Texas 78666 . 512/353-4444 . FAX 512/396-4656 <br />