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• TABLE IV summarizes the results of the analyses of water samples taken since the <br /> start of the project MW-2 & MW-3 are not included in the table - they have never <br /> measured any contamination in either soil or water samples The table shows that the <br /> levels of concentrations of all tested components have been sporadic and very low <br /> The depth to water measured in MW-4 is not consistent with prior data obtained since <br /> inception of the project - refer to PLATE IV and prior monitoring reports for more data <br /> The well was purged and sampled within 24 hours after completion, suggesting that <br /> recharge is very slow This supports sample data which shows that there is very little sand <br /> present in this area, and the existing contamination is essentially immobilized in the clays <br /> and silts present beneath the site <br /> CONCLUSIONS: <br /> This latest work confirms our prior position that the contanunation which exists beneath <br /> the site is restricted to a very small area The aquifer has very low permeability and slow <br /> recharge, suggesting that the contamination has not migrated very far from the source As <br /> shown on PLATE III, there are no water supply wells within a 400 foot radius of the site, <br /> and the nearest residential wells, if any exist, would be over 700 feet away <br /> • Therefore, we believe that no further work is warranted at this site, and it should be <br /> closed <br /> gmdnter <br /> & Associates <br /> r 31, 1997 EQ G£n Marci cisme <br /> RWQCB 4 1 NuNTER <br /> Garrison Law Corp <br /> No 860 <br /> #sTq�OF CPQ-�FQ4�� <br /> 6 <br />