ARCHIVED REPORTS XR0008081 - Laserfiche WebLink

Home Browse Search

�ID GROUNDWATER EIDETECHNOLOGY, INC. 1401 Halyard Drive,Suite 140 West Sacramento,CA 95691,(916)372-4700 FAX(916)372-8781 December 22, 1992 Project No 02030 0163 Mr Brett Hunter Chevron U S A Products Company 2410 Camino Ramon San Ramon, CA 94583-0804 RE QUARTERLY MONITORING AND SAMPLING ACTIVITIES CHEVRON SERVICE STATION NO 9-0342 1347 SOUTH EL DORADO STOCKTON, CALIFORNIA Dear Mr Hunter Groundwater Technology, Inc submits this letter as a summary of quarterly groundwater monitoring and sampling data collected at the above-referenced site on October 26, 1992 The four site-related groundwater monitoring wells were gauged to determine depth to groundwater (DTW) and to check • for the presence of separate-phase petroleum hydrocarbons A potentiometric surface map (Figure 1) and a summary of groundwater monitoring data (Table 1) are included After measuring DTW, selected monitoring wells MW-3 and MW-4 were purged and sampled Monitoring wells MW-1 and MW-2 are sampled on a semi-annual basis The groundwater samples were analyzed for dissolved benzene, toluene, ethylbenzene and xylenes (BTEX), and total petroleum hydrocarbons-as-gasoline (TPH-G) Results of the chemical analyses are summarized in Table 1 Laboratory reports and chain-of-custody manifests are included in Attachment A All purge water generated during the sampling process was collected in a Department of Transportation (DOT)-approved purge water trailer and transported for recycling to the Chevron refinery in Richmond, California Groundwater Technology, Inc is pleased to assist Chevron on this project If you have any questions or comments please call our West Sacramento office Sincerely, Groundwater Technol y, In Groundwater Technology, Inc Wrrtte bmitt Reviewed/Approved by AMES W GRASTY, A �E>;ED GE SIMONIS, R G Environmental Geol st G15 kED) Environmental Geologist Project Manager ,�oQS . DSB/JWG/EKS rb Z +� No 4422 y Attachments 01630TR4 LTR . Offices throughout the U S,Canada and Overseas