ARCHIVED REPORTS_XR0006383 - Laserfiche WebLink

Home Browse Search

-c Chevron Quarterly Groundwater Monitoring Report(4Q2000) Page 2 of 2 Facility 49-6171 —6633 Pacific Avenue,Stockton,CA Date February 5 2001 DISCUSSION: This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc on November 1,2000 Seven wells were sampled during this event TPHg was reported in six of the wells sampled at concentrations ranging from 120 ppb in MW-4 and MW-6 to 230 ppb in MW-7 Benzene was reported in five of the wells at concentrations ranging from 0 54 ppb in MW-7 to 2 5 ppb in MW-2 MtBE was reported in four of the wells at concentrations ranging from of 2 7 ppb in MW-7 to 24 ppb in OW-1 Groundwater analytical results were generally consistent with historical data Slight increases in benzene and toluene in six of the wells requires analysis of statistical significance To be submitted under separate cover Groundwater elevations across the site increased an average of approximately 30 feet this quarter Groundwater flow was to the north at 0 03 ft/ft LIMITATIONS The findings presented in this letter are based on data and interpretations provided by Gettler-Ryan, Inc Gettler- Ryan's report is attached The data presented in this summary is accurate only to the degree implied by the sources and methods used No warranty,expressed or implied, is made by SECOR If you have any questions, please feel free to call us at(916)861-0400 Sincerely, • SECOR .Inter nal Inc Scott Gable Senior Geologist ATTACHMENTS: • Attachment A—January 15, 2001 Groundwater Monitoring& Sampling Report by Gettler-Ryan Inc cc Bob Cochran, Chevron Products Company, P O Box 6004, San Ramon,CA 94583-0804 Marty Hartzell, RWQCB-CVR, 3443 Routier Road,Suite A,Sacramento, CA 95827 Wilbur Smith 1I, Sims-Grupe Management, 374 Lincoln Center, Stockton,CA 95207 Donald Bradshaw, Levine-Fricke-Recon, 1900 Powell Street, 12`s Floor, Emeryville, CA 94608-1827