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Wright RECENED ' 7 Environmental Y Services, Inc. JAN 0 9 2004 Construction • Engineering • Remediation ENVIRON MEN f HEALTH PERMIT/SERVICES January 5,2004 Project No 4090-P Ms Janice Brown c/o Cox&Cox 1593 Arrowhead Dave St Helena,California 94574 Re. Monitoring Well Abandonment Destruction Workplan,Wells MW-3 and MW-9 Cox&Cox Site at 595 East 11th Street,Tracy,CA Dear Ms Brown, Wright Environmental Services, Inc (Wnght) has prepared this Monitoring Well Abandonment Destruction Workplan for the above referenced site As you know, an interim site cleanup work is planned a part of which is the destruction of Wells MW-3 and MW-9 within the proposed soil excavation areas This workplan preparation is in response to a request from Mr Mike Infurna at the San Joaquin County Environmental Health Department (SJC/EHD)letter dated December 17,2003 Monitoring Well Destruction Methods Monitoring wells MW-3 and MW-9 will be abandoned by permanent destruction under approved SJC/EHD well destruction permits using a qualified C-57-licensed well drilling contractor The wells will be abandoned pnor to the pending soil excavation for areas in and around these two wells The SJC/EHD well inspector will be scheduled to observe these well abandonment destructions The two monitoring wells' casing depths will be sounded and a final depth to groundwater measured from the top of each existing casing Both wells will be destroyed by over boring to full depth of each well plus one foot (18 feet below surface grade)and grouted with non-hardening bentonite,and allowed to stand undisturbed for no less than 48 hours No cement grout is to be used for these well destructions Limitations This proposed well destruction workplan has been prepared specifically for the Mr Ed's Muffler(Cox and Cox)Site at 595 E 1 Ith Street in Tracy, and was done according to the current State and local agency suggested guidance documents for these investigations The interpretations,conclusions and recommendations made herein are based on the data and analysis for the soil and water samples collected on-site and should be reviewed in the context of this report and other site reports Please note that reports of contamination must be submitted to the agencies in a timely manner Wnght Environmental Services, Inc is not responsible for errors in laboratory analysis and reporting, or for information not available during the course of the study, and no warranty or guarantee is expressed or implied therein 67 E 10th Street • Tracy,CA 95376 209 833 0758 • Fax 209 832 5152 wright@inreach com Lie #651501 A-B HazMat page 1 websit hup//home inreach com/wright