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Peter Wallace Page 2 <br /> Failure to comply with directives issued by PHS-EHD could result in formal action and <br /> could place your eligibility to receive reimbursement under the Cleanup Fund in <br /> jeopardy. <br /> Detection limits for the BTEX constituents from MWs 1, 2 and 3 for the December <br /> 19, 1995 event were elevated above the acceptable 0.5 ug/I level and reported as <br /> "non-detect". PHS-EHD cannot accept this data as valid in meeting the sampling <br /> requirements for this site. In the future, please ensure that adequate time is allowed <br /> to review the data prior to submittal so that any unacceptable data can be corrected <br /> prior to the end of the quarter. Matrix interference can be compensated for and <br /> values can be obtained that will meet regulatory requirements. Please discuss these <br /> items with your consultant and laboratory to ensure that future reports reflect <br /> acceptable levels. <br /> PHS-EHD recommends that you re-evaluate your site management plan and ensure <br /> that the minimum requirements for quarterly monitoring are met. <br /> Boring logs submitted for the new monitoring wells do not include well casing and <br /> material data. Please have your consultant re-submit new boring logs that include <br /> casing, sand, bentonite, and grout depths. Field notes taken by Michael lnfurna at <br /> the time of the wells installation differ from the dimensions listed within your report. <br /> Of particular importance are the depths of the casings, the total depths of the borings, <br /> and the dimensions of the screened intervals. <br /> If you have any questions, please contact Michael lnfurna at (209) 468-3454. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Michael lnfurna, Senior REHS Marga t Lagorio, ; HS <br /> Site Mitigation Unit Lead Senior <br /> MI <br /> c: SWRCB - Annabel Mackey <br /> c: Advanced GeoEnvironmentai - Bob Marty <br />