Laserfiche WebLink
' k%j KLEINFELDER <br /> 1 EXECUTIVE SUMMARY <br />' This report summarizes Kleinfelder's Monitoring Well Installation, Groundwater Sampling, and <br /> Sensitive Receptor Survey conducted at the General Mills Facility located at 2000 West Turner <br /> Road in Lodi, California Mr Wade Broughton retained Klemfelder to conduct the activities <br />' based upon Kleinfelder's proposal titled "Proposal/Cost Estimate, Monitoring Well Installation <br /> and Limited Sensitive Receptor Survey, General Mills Facility, 2000 West Turner Road, Lodi, <br /> California," dated March 1, 2001 <br /> Three monitoring wells, MW-2, MW-3 and MW-4, were installed near an existing, non- <br /> operating underground storage tank (UST) at the General Mills facility (See Plate 1) <br /> 1 Monitoring well MW-1 was previously installed next to the UST The existing 10,000 gallon <br /> UST previously contained No 1 Diesel, No 2 Diesel, Kerosene, and JP-4 Jet Fuel During <br /> advancement of the soil borings, groundwater was encountered approximately 36 feet below <br /> ground surface (bgs) The monitoring well borings were advanced vertically to a depth of <br /> approximately 50 feet bgs The three wells were screened from approximately 29 to 49 feet <br /> bgs <br />' Soil samples were collected at 5-foot intervals beginning at 5 feet bgs Four'soil samples were <br /> collected from the borings for laboratory analysis (one sample each from MW-2, MW-3, and <br /> two from MW-4) No petroleum-like odors were noted in the soil samples collected The soil <br /> samples selected for analysis were collected at approximate depths ranging from 30 to 41 feet <br /> bgs One soil sample from each of the well borings were analyzed for total petroleum <br /> hydrocarbons as referenced to diesel (TPH-D), total petroleum hydrocarbons as referenced to <br /> gasoline (TPH-G), and benzene, toluene ethylbenzene, total xylenes (BTEX) The fourth soil <br />' sample collected beneath groundwater from well boring MW-4 was analyzed for TPH-D only <br /> The three new wells were developed greater than 48 hours after installation Groundwater samples <br /> were collected from each well, as well as from the previously installed MW-1 All the <br /> groundwater samples were analyzed for TPH-D, TPH-G, BTEX, and the five oxygenates, methyl <br /> tert-butyl ether (MTBE), tertiary butyl alcohol (TBA), di-isopropyl ether (DIPE), ethyl tertiary <br /> butyl ether(ETBE), and tertiary amyl methyl ether(TAME) <br /> Based on the laboratory results, none of the soil or groundwater samples collected from the <br /> 1 three new well bonngs and installed monitoring wells (MW-2, 3, and 4) had detectable <br /> concentrations of the requested petroleum constituents The groundwater sample from the <br /> previously installed MW-1(located in proximity to the UST) had detectable concentrations of <br />' TPH-D at 13 0 milligrams/per liter (mg/1) and TPH-G at 2 5 mg/l Two BTEX constituents, <br /> ethylbenzene and total xylenes were also detected in this groundwater sample at 16 and 0 83 <br /> micrograms/per liter (µg/1), respectively For a summary of the results obtained, please refer to <br /> Tables 1 and 2 in the Appendix of this report <br /> 20-x417-16 E04/ST02R038 Page I of 18 <br /> ©2002 Klemfelder,Inc June 7,2002 <br />