ARCHIVED REPORTS_XR0005055 - Laserfiche WebLink

Home Browse Search

Eckert Cold Storage Company 757 Moffat Blvd,Manteca, California June 26, 2001 ' Quarterly Groundwater Sampling Report; June, 2001 Page. 2 • Summary of Analydcal Findings This quarter contaminants were detected in all wells except for the Domestic Well (Table 2. and Appendix A). MW-2 was not sampled during this event. A summary of the analytical data for this quarter's monitoring wells is shown below: 3/5/2001 TPH- TPH- B T E X MTBE ETH BTA D1PE ETBE TAME EDB 1,2- Gas Diesel DCA Well u uej u u u m m u u ugrL u ugAL u u MW-I 13 ND 3,000.'L 130 540 1,000 1 ND ND ND ND ND ND ND ND MW-3 2.9 ND 156. 6.6 ND 130 ND ND ND ND ND ND ND ND ' MW-4 -,1.2 ND 240.. .. SS 120 . 150 5.0 ND ND ND ND ND ND ND MW-5 0.35 . ND 15 ` 1.9 1 29 30 4.3 : ND ND ND ND ND ND 2.2 MW-6 ND ND 0.6' ND ND ND ND ND ND ND ND ND ND ND ' MW-7 0.21 ND 5.4 OA 14 15 ND ND ND ND ND ND ND ND MW-81 10 1 ND 1 0' 25 220 1 920 1 ND I ND NDND D7 ND ND ND ND—None Detected at or above the reporting limit DIPE—Di-Isopropyl Ether BTEX—Benzene, Toluene,Ethyl Benzene,Xylenes ETBE—Ethyl Tert-Butyl Ether MTBE—Methyl Tert-Butyl Ether TAME—Tert-Amyl Methyl Ether ETH—Ethanol EDB—Ethylene Dibromide BTA—Tert-Butanol 1,2-DCA— 1,2-Dichloroethane MTBE contamination is present this quarter in MW-4 and MW-5, at levels below the maximum allowable (35 ug/L) set by the State of California. The levels of MTBE has decreased since last quarter. The fact that MTBE is found on-site is curious because MTBE was not present in the fuels on-site. MW-5 also contains 2.2 ug/L of 1,2-DCA. ' MW-1 has shown a sharp increase in benzene this quarter from 290 to 3,000 ug/L. All other analytes have increased since last quarter. The concentration of all analytes in ' MW-3 have also increased, along with benzene which fell from 29 to 150 ug/L. The only chemical that decreased in MW-3 was Ethyl-benzene. The concentrations of the chemicals present in MW-4 have increased since last quarter except for MTBE which ' decreased from 9.2 to 5.0 ug/L. Benzene increased from 5.6 to 240 ug/L. MW-5 has shown a slight decrease in gasoline, MTBE, and 1,2-DCA, while all other chemicals have increased slightly. MW-6 has remained consistent with last quarter's ND levels, with the exception of a small amount of Benzene at 0.6 ug/L. MW-7 has shown slight increases in all analytes that were present last quarter except for diesel which decreased to ND. MW- S has shown significant increased since last quarter's monitoring event, especially for ' benzene which has increased from 75 to 1,300 ug/L. Based on past and present analytical data, Benzene is the constituent that poses the ' greatest threat to human health and the environment but it is not found in the nearest receptor, which is only 250 feet to the northwest.