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3250 West Hammer Lane <br /> Page 2 <br /> 3. Plots of key chemical concentrations vs. time (e.g.,plots should be shown for <br /> monitoring wells that demonstrate significant trends in contaminant <br /> concentrations); <br /> 4. Summary tables of chemical concentrations in different media; <br /> 5. Rose diagram showing directions of dominant groundwater flow; <br /> 6. Dissolved and adsorbed contamination mass estimates supported by calculations; <br /> 7. Boring and well logs (including construction/screening). <br /> Laboratory analytical results are not being electronically!.submitted to GeoTracker—the <br /> State Water Resources Control Board database program.: This is required by Water Code <br /> Section 13196 and commonly referred to as AB 2886. Electronic transmission of <br /> laboratory analytical results to GeoTracker must be initiated immediately. <br /> The SCM and work plan that includes interim remedial alternatives to control the off-site <br /> migration of methyl tertiary-butyl ether should be submitted to EHD by 2 June 2003. If <br /> you have any questions,please contact Vicki McCartney at (209) 468-3456. <br /> Donna Heran, REHS,Director <br /> Environmental Health Department <br /> Vicki McCartney, EHS Nuel C. Henderson,Jr.,RG ` <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc: David Herzog, Shaw <br /> James L.L. Barton, CVRWQCB <br />