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Monitoring Program Memorandum - 2 - 9 March 1993 <br /> Geweke, 16 S. Cherokee Ln. , lodi <br /> is delineated by MW11 and MW12. <br /> 5. It is not acceptable to propose that certain wells "will not be <br /> monitored" . The existing monitoring program has been deemed inadequate <br /> because all wells have not been sampled annually. Ground water samples <br /> must be collected from all wells and analyzed at least once per year to <br /> provide a consistent and complete data base. <br /> 6. No comments were provided on the proposed analyses listed in the draft <br /> C&A. All constituents listed are either commonly found in gasoline or <br /> have been detected in wells installed to monitor the site. <br /> 7. No comments were provided regarding our requirement that all wells <br /> installed after the C&A is issued be sampled quarterly for all <br /> constituents listed. All new wells must be sampled quarterly until <br /> enough data have been collected to show that monitoring less frequently <br /> is warranted. <br /> Attached are a Table comparing monitoring programs and a revised Monitoring <br /> and Reporting Program. The Monitoring and Reporting Program contains a <br /> monitoring schedule (see page 1) which includes quarterly monitoring of 7 <br /> wells. However, the program differs from that proposed by GeoAudit. The <br /> Table shows a comparison of the existing, GeoAudit's proposed, and the revised <br /> monitoring programs. <br /> The revised Cleanup and Abatement Order can be issued by next Friday. The <br /> revised monitoring program has been sent to the Geweke's for their review and <br /> comment by 11 March 1993. <br />