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rclean ural Hallow landfill ' <br /> Goun water <br /> By LISA ROSS were leaking," said Bill Marshall, senior "An analysis of the samples collected slum, potassium and sodium were found <br /> Bee stair writer e engineer for the state Regional Water during the SWAT program indicates that in the groundwater of the Corral Hollow <br /> STOCKTON — No dangerous pollut- Quality Control Board. "The Tracy land- no compounds are present in the shallow landfill. But it wasn't enough to pose a <br /> ants were found in the groundwater be fill is one of the exceptions." perch and deep region aquifers of the threat,Marshall said. <br /> low the Corral Hollow Sanitary Landfill Groundwater in the area tested is used vadose zone soil at levels exceeding haz- "Those are not,,really harmful,"he said., <br /> Ve <br /> ngineers studying the site near ardour' *aste criteria," said the engi- "You need them to live:" <br /> as drinking water, said Mark Urquhart, neers'report on the Tracy landfill. The board voted unanimously Tuesday <br /> associate civil engineer for San Joaquin When the Geer Road Landfill and Bon- to accept the engineers' report and .to <br /> San Joaquin County Board of Su- County zi landfills in Stanislaus County were re- finish paying for the $178,000 study, <br /> of <br /> pervisors hired EMCON and Associates tY <br /> of San Jose to monitor the groundwater Corral Hollow was one of 150 landfills viewed in 1987, pollutants were found, Tracy will pick up half the tab. <br /> last July to comply with state legislation throughout the state studied last year as Marshall said. Both of those sites are Urquhart said county engineers will <br /> passed in 1984 to make sure landfills part of the Solid Waste Assessment Test, being closely monitored. The Geer Road continue to monitor three deep wells and <br /> don't leak pollutants. Marshall said. More than 2,000 sites will site is expected to close by 1990. three shallow wells near the landfill, <br /> "Most of the landfills we looked at be reviewed by 1999. Very small traces of calcium, magne- which will cost Tracy$20,000 annually. <br />