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;.;NEPA ciso names <br /> vermore site <br /> for'needed cleanup <br /> ^/ Staff and wire reports <br /> ( ; .�;.Tra Defense .Depot and. the 'Law. <br /> �t> rence lvermore laboratory's explosive •7 <br /> testing site,five miles west of Tracy will <br /> be added to the list of the nation's worst <br /> tt: hazardous waste sites, the Environmen- <br /> tal Protection Agenq said Thursday. <br />_ Fify other.military installations, nu- <br /> clear fuel facilities and nuclear laborato- <br /> ries will also be added to the list, often <br /> referred to as the Superfund list, The <br /> agency gave no sign how much the re- <br /> quired cleanups,will cost. <br /> Fred Green,"a spokesman forthe Tracy <br /> Defense Depot said the depot had spent <br /> -'-aboue$3 million to Identify the extent of <br /> ,groundwater pollution around the instal <br /> -1t elation,,l�i�mile$southwest of Tracy: C <br /> " Groundwater beneath the depot•is <br /> ::,:.Contaminated with the cleaning solvent <br /> ,,,trichlorpethylene�' a suspected carcino- <br /> ��,Ben. <br /> i. <br /> ".We've'ween working:with'the U.S, 1 <br /> Army Corp of Engineers to define the i. <br /> place of 'the contamination" he said. <br /> ,"It's not a health problem. It's nowhere' <br /> '"near the Tracy water supply:" <br /> The EPA says the groundwater pollut <br /> ion is within three miles of several prj."' 0 <br /> vate and public wells, including one that<<i { <br /> serves the city, although water from this,13 I <br /> well is mixed with water from several t> <br /> other sources. i 1 <br /> The Defense Depot is working on a 1 <br /> way to clean up the contaminant. The '• ' <br /> most likely method would be to pump rl <br /> the water out of the ground,filter it,then <br /> pump-it back in,Green said. <br /> Officials with Lawrence Livermore Na- <br /> tional Laboratory said they were•per- 1 <br /> plexed and perturbed by the report, and ` <br /> `I they challenged the EPA's figures. <br /> q. <br /> Lab officials dispute the ranking of the <br /> 11-square-mile Site 300 — a high explo- <br /> sive test site on the San Joaquin-Alame <br /> ',. da county line — as one of •thp tmostp: j <br /> / ;contaminated sites in the natiotl.` <br /> f'." "We are. very disappointed that they' . <br /> made.this proposal,and we are at a•loss, <br /> r'. as to.how they managed to score the site <br /> :.high enough to get on (the EPA priority <br /> list),". said Fredrick Hoffman, division <br /> leade 'of environmental restoration at <br /> the lab.; <br /> ,'�; r i <br /> The EPA uses a. numerical system to ` <br /> rank the levels of contamination at trou- <br /> ble spots throughout the country. A site,: <br /> that scores 28.5 or more is put on the 1 <br /> EPA priority cleanup list. <br /> j .i ,c t, t See EPA,8-4. <br />