Laserfiche WebLink
r- <br /> LATHROP PROPERTY <br /> WKA No. 1184.02 <br /> January 30, 1992 <br /> Page 6 <br /> Documentation pertaining to the underground storage tank JUST) and/or partially buried <br /> storage tank operations is not available. Information rogarding the layout of the tank(s)and <br /> associated product piping with respect to buildings and streets, UST permit issuance and <br /> compliance, ostimatos of the quantity of liquid leaked Into the environment, the history of <br /> leaks,spills and accidents involving the UST(s) system, or the exact date of UST(s) removal, <br /> their repair history, condition upon removal and Integrity testing results. is not known. We <br /> are not aware of previous onvironmantal wark performed for the property. <br /> ,., 5pils Rgm nil diati <br /> 1 e Remediation of petroleum hydrocarbon contaminated soils occurred over an approximata 16- <br /> month pariod, beginning with site characterization (August, 1990) and terminating with <br /> S, successful completion of soils aeration (November, 1991). <br /> r Background <br /> No surface evidence remained on the property at the time of our initial assessment activities <br /> to indicate aroa(s) of former site activities, particularly with respect to UST locations and <br /> fueling islands. Our historic research, however, revealed that service station infrastructure <br /> had been confined to the vicinity of the southwesterly corner of the property: although exact <br /> locations of'fooling-related features were indeterminable. Eight initial borings (B-series?and <br /> seven characterizing borings(P-series)wore.drilled in the vicinity of the southwesterly corner <br /> of the property. Boring logs and ar. iyticai results for soil samples obtained from these <br /> borings are presented in previous reports propere.i for the property. <br /> Based on the boring location placed within the suspected former UST location that contained <br /> t1l the highest concentration of petroleum hydrocarbon-contaminated soils,six additional borings,: <br /> were placed laterally outward from the "hot spot" location (Boring P1)until non-detectabla <br /> concentrations of subsurface soils contamination were found. Subsequent to review of field <br /> data and laboratory test results genorated during site characterization, we determined that <br /> j potrolaum hydrocarbon-contaminated subsurface soils encompassed a roughly rectangular- <br /> shaped area approximately 60 by 70 feet in plan view. <br /> �1WxIts <br /> -'�- G_1�'� <br /> 1 <br /> VMa°' n <br />