Laserfiche WebLink
5608 North Pershing Avenue, Stockton, California October 14, 1993 <br /> Chevron U S A Products Company Page 2 <br /> of well abandonment The 5o to 55-feet-deep wells were abandoned by pressure grouting each well <br /> with a neat cement/bentonite mixture through a tremmie pipe All monitoring well destructions were <br /> Performed in accordance to the State of California, Water Well Standards, Bulletin 74-81, Section 23 <br /> for water well destruction <br /> GROUNDWATER MONITORING AND SAMPLING <br /> On September 2, 1993, the five remaining groundwater monitoring wells were gauged to determine <br /> depth to groundwater (DTW) A potentiometnc surface map (Figure 1) and a summary of <br /> groundwater monitoring data (fable 2) are included After measuring DTW, the wells were purged <br /> and sampled The groundwater samples were analyzed For dissolved STEX, and TPH-G Results of <br /> the chemical analyses are summarized in Table 2 Laboratory reports and chain-of-custody <br /> manifests are included in Attachment I All purge water generated during the sampling process was <br /> collected In a Department of Transportation (DOT)-approved purge water trailer and transported for <br /> recycling to the Chevron refinery in Richmond, California <br /> Groundwater Technology, Inc is pleased to assist Chevron on this project If you have any <br /> questions or comments please call our West Sacramento office <br /> Sincerely, <br /> Groundwater Technology, Inc Groundwater Technology, Inc <br /> Written/Submitted by Reviewed/Approved by <br /> DANISE SCRIVEN BEGNAUD BRUCE H EPPLER <br /> Associate Geologist Environmental Geologist <br /> l5�SRED GE— Project Manager <br /> S tED1,� <br /> Q z E K SIMONIS, R G <br /> �y No 4422 y Senior Environmental Geologist <br /> DSB/BHE/EKS rz <br /> Attachments <br /> 46070TR3 LTR Q�'CAL1FpR <br /> GROUNDWATER <br /> I I TECHNOLOGY <br />