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i <br />'F TRACY COMMUNITY MEMORIAL HOSPITAL <br /> PAGE 3 <br /> om <br /> analytical re 3 , BGS f showedh nond tect forhe three soil t BTEX,es �en f r <br /> TPHas <br /> 51 # 9t , and 13 01 <br /> gasoline, and TPH as diesel r�spectively,etection lexcept a � <br /> for 14 . <br /> ppm, 1. 0 ppm, and 10.0 ppm, <br /> ppm TPH as diesel from the 13= sample, <br /> The report recommends the excavation of the impacted soil <br /> as a remedial measure. <br /> s RP letdiscussing several <br /> 12-22_88 pHS/EHD sendletter osal to over-excavate.areas Several <br /> concern regarding the p p <br /> of the concerns are no <br /> as follows: <br /> the lab used A headspace preparation method which <br /> is not acceptable for quantitating "nondetectable" <br /> results, <br /> � ing before full contaminant assessment may <br /> excavat <br /> be premature <br /> PHS/EHD requests a revised WP be submitted to the CVRWQCB <br /> for approval. <br /> 1989 <br /> of a WP originally. submitted to <br /> 01-17-89 PHS/EHD receives a copy. wells at <br /> the CVRWQCB for over installation three monitor ng tank pat <br /> area and the install <br /> the site. <br /> MWS <br /> 02-06-89 PHS/EHD receives a. WP for the installation o°rittyrOf th <br /> tions that themajority e <br /> at the site. The WP men <br /> HD <br /> impacted soils had been <br /> ethatCavated on ver-ex avation $and has Eno <br /> was not in <br /> i <br /> documentation on the over-excavation activity at all. <br /> 02-o6-89 PHS/EHD sends letter to RP explaining the concern that. a <br /> groundwater investigation will be of the soil <br /> eva evaluaired at tion dueto <br /> regardless .of the <br /> outcome <br /> the shallow depth <br /> at the <br /> 0 <br /> 2-20-89 PHS/EHD receives a .memo <br /> Wells at thecsitecwill hbe used <br /> installation of the three <br /> ent and <br /> the gradi <br /> to determine the depth to groundwater. <br /> any potential groundwater contamination. The memo also <br /> mentions that should the gradient study show that the <br /> three wells fail to capture a groundwater contaminant <br /> plume, additional wells will need .to be installed. <br /> PHS/EHD receives a "Groundwater In <br /> 04-12-89 vestigation ReporsB <br /> discussing the installation of three MWs and one SB. . <br /> s <br /> f <br />