Laserfiche WebLink
r <br /> ��ZN A��� <br /> A RESNA Company <br /> Environmental Solutions <br /> Through Applied Science, <br /> r 3164 Gold Camp Drive, Suite 200 Engineering&Construction <br /> Rancho Cordova, CA 95670 <br /> Phone (916) 852-6690 <br /> FAX (916) 852-6688 <br /> January 9, 1992 <br /> Ms Penny Silzer <br /> Unocal Corporation <br /> P O Box 5155 <br /> San Ramon, California 94583 <br /> r <br /> Subject Status Report and Ground-Nater Monitoring, Fourth Quarter 1991, Unocal <br /> Service Station No 6981, 4707 Pacific Avenue, Stockton, California <br /> Ms Silzer <br /> At the request of Unocal Corporation (Unocal), RESNA Industries (RESNA, formerly <br /> Applied GeoSystems) is conducting quarterly monitoring of ground water at the subject site <br /> This letter report summarizes the results of the fourth quarter 1991 ground-water monitoring <br /> event The location of the project site is shown on the Site Vicinity Map (Plate 1) <br /> BACKGROUND <br /> Applied GeoSystems conducted an initial investigation in May and June 1988 in conjunction <br /> with the removal and replacement of gasoline-storage tanks (Applied GeoSystems, July 8, <br /> 1988, Report No 38032-1) Results of field work and laboratory analyses indicated gasoline <br /> hydrocarbons were present in soil under the former tanks In December 1988, we <br /> performed a soil-vapor survey Results of the survey indicated low levels of gasoline <br /> hydrocarbons were present in vapor in one probe hole near the southwest corner of the site <br /> On the basis of these results, Unocal requested an investigation of the soil and ground water <br /> beneath the site <br /> 3803 <br /> 38032-62-6 <br />