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Y • <br /> aqua scie ce <br /> AW AIL_�= engineers inc0 j= <br /> October 3, 2000 <br /> Mr Juan Robles <br /> 17886 South Airport Way <br /> Manteca, CA 95337 <br /> SUBJECT WATER WELL SAMPLING RESULTS <br /> 17886 South Airport Way <br /> Manteca, CA 95337 <br /> Dear Mr Robles <br /> On August 21, 2000, Aqua Science Engineers, Inc (ASE) collected <br /> groundwater samples from the domestic well located on your property at <br /> 17886 South Airport Way in Manteca, California The samples were <br /> submitted to Kiff Analytical Laboratory in Davis, California for analysis <br /> None of the compounds analyzed were detected above laboratory <br /> detection limits Groundwater samples were collected from the domestic <br /> well again on September 19, 2000 Once again, none of the compounds <br /> analyzed were detected above laboratory detection limits <br /> A second well on the property used for irrigation was sampled on August <br /> 24, 2000 These samples were collected from the well using a bailer <br /> Methyl tertiary butyl ether (MTBE) was detected in the water sample at <br /> 0 84 parts per billion (ppb) A confirmation sample collected from the <br /> well on September 19, 2000 contained 0 92 ppb MTBE Both of these <br /> concentrations are below the California Department of Health Services <br /> (DHS) maximum contaminant level (MCL) for drinking water of 5 ppb It <br /> is our understanding that water from this well is not used for domestic <br /> purposes (drinking, cooking, washing, etc ) Although the MTBE <br /> concentrations detected did not exceed DHS MCLs for drinking water, ASE <br /> recommends that water from this irrigation well continue to nat_ be used <br /> for drinking or cooking <br /> Once again, we would like to reiterate that the low MTBE concentrations <br /> were detected in the irrigation well only, and that no MTBE was detected <br /> in water samples collected from the domestic well (the well used f o r <br /> water in your home) on either occasion <br /> i <br /> 208 W El Prntodo, Donvrlle, Colrfornra 94526 • 925-820-9391 • Fox 925-837-4853 <br />