Laserfiche WebLink
Mr. Andrew Smith • - 2 - 28 March 2001 <br /> 4. The groundwater contamination plume is not delineated north of boring location DP-3, east of <br /> DP-9 or south of DP-5. Herman&Helen's Marina must delineate the lateral extent of <br /> contamination. <br /> 5. The Quarterly Report does not discuss trends in groundwater elevations, analytical results, and <br /> whether current results are consistent with historical data. This information should be provided <br /> in subsequent reports. <br /> 6. In analytical tables, Herman &Helen's Marina should remove "ND". The less than symbol <br /> accompanied with the method reporting limit should be used. <br /> 7. The Quarterly Report states that top of casing elevation for monitoring well MW-1 is assumed to <br /> be 100 feet. Herman&Helen's Marina must survey the monitoring wells to mean sea level <br /> datum. <br /> 8. The Quarterly Report's historical analytical table lists"NT" for several of the analytes but does <br /> not define"NT"in the footnotes. All acronyms used in tables must be defined in the footnotes of <br /> that table. <br /> Enclosed for your review and comment is a draft monitoring and reporting program (MRP). By <br /> 15 May 2001, provide written comments on the draft MRP. In addition,by 15 May 2001, please submit <br /> a work plan for an additional investigation to delineate the lateral and vertical extent of groundwater <br /> contamination. The work plan needs to include installing at least three monitoring wells, surveying all <br /> existing and proposed monitoring wells to mean sea level datum, and a schedule to implement proposed <br /> work. If you have any questions, you may contact me at (916) 255-3119 or by email at <br /> llewlisd ,rb5s.swrcb.ca.eov. <br /> DEVRA LEWIS <br /> Environmental Scientist U <br /> Attachment <br /> cc: Ms. Margaret Lagorio, San Joaquin County Public Health Services, Stockton <br /> Donald Kresse, Condor Earth Technologies, Inc., Stockton <br />