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C,eolog t Technas Itw Page 6 GW Monitoring Report Ted Peters-AST Project No 701 2 May 15,2003 Recommendations 1 Maintain the current quarterly groundwater monitoring event schedule as required in the MRP 2 Discontinue analyses for VOCs on a quarterly basis and reduce the testing to annual in ' wells MW-4 through MW-7 This is a formal request for the Board to modify the MRP to reflect this request The reason for this change is that no chlorinated solvents are detected and that methylene chloride, the only VOCs found in these wells, is related to the petroleum contamination, not solvents 5.0 LIMITATIONS ' This report was prepared in accordance with the generally accepted standard of care and practice in effect at the time Services were rendered It should be recognized that definition ' and evaluation of environmental conditions is an inexact science and that the state or practice of environmental geology/hydrology is changing and evolving and that standards existing at the present time may change as knowledge increases and the state of the practice continues to improve Further, that differing subsurface soil characteristics can be experienced within a small distance and therefore cannot be known in an absolute sense All conclusions and recommendations are based on the available data and information The tasks proposed and completed during this project were reviewed and approved by the local regulatory agency for compliance with the law No warranty, expressed or implied, is made ' 6.0 SIGNATURES & CERTIFICATION If you have any questions or if we can be of further assistance, please do not hesitate to contact our office at 209-522-4119 ' This report was prepared by ' Jo Angul Geologist �o c� RI Raynold 1 Kablanow II, Ph D °` NO 5234 California Registered Geologist #52346 ')(-o� Certified Hydrogeologist#442 y �,��