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California RRional Water Quality Pontrol BoardNb Q Y <br /> Central Valley Region � <br /> Winston H. Ilickox Sacramento Main Office Gray Davis <br /> Secrelaly for lntcmet Address: littp:/hN-\Nw.s\vrcb.ca.gov/—rwgcb5 Governor <br /> Enilronmental 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Protection Phone(916)255-3000•FAX(916)255-3015 <br /> 26 January 2001 <br /> Mr. Doug Stidham, City Engineer <br /> City of Escalon <br /> 1854 Main Street <br /> Escalon, CA 95320 <br /> WORKPLAN ADDENDUM NO. 2, GRO UND WA TER I YELL DISINFECTION WORKPLAN <br /> ADDENDUM, CITY OF ESCALON WASTEWATER TREATMENT PLANT, SAN JOAQUIN <br /> COUNTY <br /> I have reviewed the IT707-kplan Addendum No. 2: Disinfection of Groundwater Monitoring Wells, City of <br /> Escalon - Waste Water Treatment Plant, prepared by Geological Technics, Inc. The workplan is dated <br /> 8 January 2001 but was received at the Regional Board office on 16 January 2001. The workplan <br /> addendum was prepared in response to the 2 January 2001 Regional Board review of Geological <br /> Technics' Well Disinfection Workplan and Workplan Addendum No. 1. The workplan and the <br /> addendums describe a well disinfection procedure to address elevated coliform concentrations observed <br /> in groundwater monitoring wells at the City's wastewater treatment plant. <br /> The procedures described in the workplan addendum are acceptable. Please proceed with the well <br /> purging and sampling. If you have any questions on this workplan addendum review, please telephone <br /> me at (916) 255-3116. <br /> �z <br /> TIMOTHY R. O'BRIEN <br /> Waste Discharge to Land Unit <br /> San Joaquin River Watershed <br /> cc: Mr. Mike Huggins, San Joaquin County Environmental Health Department, Stockton <br /> Mr. Raynold Kablanow, Ph.D., Geological Technics, Modesto <br /> California Environmental Protection Agency <br /> �d Recycled Paper <br />