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Quarterly Groundwater Monitoring Report, July-August 1995 3 Manna Pro,4004 South EI Dorado, Stockton, California October 17, 1995 Analytical results reported detectable concentrations of TPH-g as well as benzene, toluene, ethylbenzene, and total xylenes (BTEX) Benzene concentrations were below method detection limits (MDLs) in the samples from wells MW-4, MW-8, MW-9, and MW-10 Concentrations of benzene were detected In samples analyzed from wells MW-1, MW-2, MW-3, MW-5, MW-6, and MW-7 These concentrations ranged from a high of 22,000 micrograms per liter (N g/L) in MWA to 0 8µg/L in MW-7 TPH-g concentrations were below the MDL of 50µg/L in the samples from wells MW-4, MW-7, MW-8, and MW-9 Concentrations of TPH-g were detected in samples analyzed from wells MWA, MW-2, MW-3, MW-5, MW-6, and MW-10 These concentrations ranged from a high of 88,000µg/L in the sample from well MWA to 120µg/L in MWA 0 Total dissolved lead was not detected in the samples collected this quarter Figure 2 illustrates the distribution of TPH-g in the groundwater using the July 31, 1995, analytical results The results of laboratory analyses are Included in table 2 The laboratory analytical reports are included In attachment 3 If you have any questions or comments, please contact our Concord office at (510) 671-2387 Sincerely, Groundwater Technology, Inc Groundwater Techn logy, Inc Submitted by Approved 5 O WL � 06256 ' ris De cio Richard M T om ser 7 Project Manager Registered ologis No 6256 For OF CAL1 ` Frank J Gorry Vice President, Operations Manager National Industry Division Attachments Figures Tables Laboratory Analytical Reports c E Thayer, California Regional Water Quality Control Board, Central Valley Region Larry Chapman, Manna Pro Dean Willis, O'Melveny and Myers 42020086 GWM H ❑M GROUNDWATER ❑❑ TECHNOLOGY ,,