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JUL-09-2001 07:36 qM 2644 17193790713 <br />• • <br />BMRI 1'R-31 Responses <br />July 2, 2001 <br />Page 3 <br />Response: BMRI agrees with the Division's recommendation and request. <br />Therefore, BMR] will discontinue groundwater monitoring of monitorfng wells <br />~1 ~ DW-2, 87-24 and M-30 initiating with third quarter 2001. BMRI will cohtinue to <br />(7'r" quarterly sample, analyze end report monittring results from monitoring well M- <br />16. For purposes of this analysis, BMRI proposes to continue analyzing sample <br />collections from monitoring Nell M-16 for those constituents required with TR•26 <br />(i.e., total dissolved solids, calcium, fluoride, sulfate, copper, iron, manganese). <br />CDMG Comment (: <br />~~~ BMRI's response to the proposed sludge removal tttethods is acceptable and approved. <br />Response: Nor further response is necessary. <br />CbMG Comment 7: <br />DMRI's proposal to delete the current nitrogen monitoring requirements from the site <br />monitoring program is hereby approved. <br />Response: BMRI wilt drop nitrogen monitoring from the CDMG site monitoring <br />,6\~ program heginning with any sample collections taken after the date of tgis <br />correspondcncc. <br />CDMG Comment 8: <br />Regarding a revised trend analysis proposal, it would be helpful if BMRI submitted a <br />sample (or samples) of the general time and concentration trend analysis for the TR-26 <br />wells so the charts can be compared to the ShewttrVCUSLIM charts. It is possible the <br />proposed revised analysis may provide a clearer picture of the alluvial aquifer cleanup <br />activities. A plot of several tnoilth's d;tta shunld sufficiently delineate an adCquate chart. <br />Response: Jim Finley, Ph.D. of'1'ell~sto tiolutiuns, loc. has submitted several <br />examples of the proposed time and concentration trend analysis charts to the <br />Division under separate cover (facsimile July 5, 2001). Should the Division require <br />additional information or require additional discussion, please contact either myself <br />(970) 325-4482 or Mr. Finley (970) 484-7704. <br />CDMG Comment 9: <br />P. 04 <br />BMRI's proposal to activate an appropriate mechanists to "revert back to the original <br />monitoring and compliance schedule for the Rito Seco alluvial aquifer ...", and BMRi's <br />