Laserfiche WebLink
I CanoftieEnvironmentaf,lip <br /> P$iN ie Environmental Services Corp <br /> February 9, 1995 171sT Street <br /> 38009.10 (94-367 010) Escalon California 95320 <br /> Phone 209 838 3507 <br /> Phone 800 926 0806 <br /> Fax 209 838 3509 <br /> Mr. James Escobar <br /> Department of Pubhc Works <br /> City of Stockton, City Nall <br /> 1465 South Lincoln Street <br /> Stockton, Californias 95202-1997 i <br /> Subject Fourth Quarter 1994 Sin Report, Fire Engine Company No. 2, 110 West <br /> Sonora Street, Stockton, i3Wbrnia <br /> Mr Escobar: <br /> This letter report summarizes the resul#s=of the environmental inveslagation conducted during <br /> the fourth quarter 1994 by RESNA Ines Inc (RESNA) at the subject site (PIate 1) <br /> RESNA has since sold it's assets to Canoes Environmental Services Corp. (Canome). The <br /> work was conducted at the request of thelMty of Stockton, Dekaxtment of Public Works (City <br /> of Stockton) and included measuring d0pths,to groundwater, collecting groundwater samples <br /> from the wells for subjective and laborawry ahalyses, and evaluating the groundwater gradient <br /> and direction of groundwater flow beneath the site. <br /> BACKGROUND <br /> In April 1987, a 1,000-gallon unleaded gasoline tank was removed and residual hydrocarbons <br /> were detected in the soil remaining under the former tank In April 1992, a 250-gallon waste- <br /> oil tank was removed. The locations of the former and existing tanks are shown on Plate 2 <br /> In 198811, The City of Stockton contracted RESNA to conduct a subsurface investigation to <br /> assess the extent of residual hydrocarbons,inf`sofl. The investigation"pexfora'red between 1988 <br /> and 1993 included drilling seventeen soil'Borings, installing five groundwater monitoring <br /> wells, five vapor extraction wells, one pieroffieter, and one recovery well, collecting and <br /> analyzing soil and groundwater samples fnr hydrocarbons, and performing a groundwater <br /> aquifer test and a soil vapor extraction test. <br /> GROUNDWATER MONITORING <br /> On October 28, November 29, and December 30, 1994, a RESNA technician measured the <br /> water levels in wells MW-1 through MW-5, well RW-1, and piezometer PZ-1. No floating <br /> product was noted in any site well. Groundwater morutoring data are summarized in Table 1. <br /> 38009-1014Q5R94 doo <br />