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Mr. Andrew Smith • - 2 - 30 April 2001 <br /> Although the groundwater flow direction has been shown to be consistent, the removal of MW-1 would <br /> leave monitoring well MW-4 as the only upgradient well. Since MW-4 consistently has concentrations <br /> of petroleum constituents that exceed water quality goals for benzene,xylenes, and TPHg, the plume <br /> would not be delineated upgradient of MW-4 without MW-1. <br /> Therefore, the request to abandon monitoring well MW-1 is denied. All other costs associated with the <br /> UST removal work must be submitted to the UST Cleanup Fund for cost reimbursement. If you have <br /> any questions or problems associated with UST cost reimbursement, contact Bob Trommer at <br /> (916) 341-5806. <br /> As stated in the 28 March 2001 letter, the deadline to submit a work plan to delineate the lateral and <br /> vertical extent of groundwater contamination is 15 May 2001. The work plan needs to include installing <br /> at least three monitoring wells as discussed in a telephone conversation between Board staff and Don <br /> Kresse of Condor on 23 March 2001, surveying all existing and proposed monitoring wells to mean sea <br /> level datum, and a schedule to implement proposed work. If you have any questions, you may contact <br /> meat(916) 255-3119 or by email at lewisdarb5s.swrcb.ca.gov. <br /> DEVRA LEWIS <br /> Environmental Scientist II <br /> cc: Ms. Margaret Lagorio, San.Joaquin County Public Health Services, Stockton <br /> Mr. Donald Kresse, Condor Earth Technologies, Inc., Stockton <br />