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PUBLI HEALTH SEiVICES ' <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue,'Third Floor • Stockton, CA 95202 �iFOR� <br /> 209/468-3420 <br /> JOE KIRIM <br /> UNIVERSITY OF THE PACIFIC <br /> 3601 PACIFIC AVENUE <br /> STOCKTON CA 95211 <br /> RE: University of the Pacific <br /> 1081 West Mendocino <br /> Stockton,CA 94204 Site Code: 000732 , <br /> WORKPLAN: Groundwater Monitoring Well Installation Workplan DATED: 9/27/01 <br /> PREPARED BY: Environmental Science Associates(ESA). <br /> APPROVED X <br /> DISAPPROVED ❑ <br /> ADDENDUM ❑ <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN(H&S 25299.37,subd.(c)(3).): <br /> 1. Install four monitoring wells at the location of the former underground storage tank(UST)to determine <br /> the direction of groundwater flow and to delineate the lateral extent of methyl tertiary butyl ether <br /> (MtBE)contamination. <br /> 2. Install a soil boring and collect a grab-groundwater sample to determine the extent of MtBE north of <br /> the former UST location. <br /> 3. Achieve the required two-inch radius between the borehole and the well casing for placement of the <br /> annular seal. The proposed method of using a hand auger for the first five feet to attain the required <br /> radius is approved. <br /> COMMENTS AND CONDITIONS: <br /> 1. All subsurface borings within San Joaquin County require permits. Obtain the necessary drilling <br /> permits from San Joaquin County prior to commencing drilling operations. <br /> 2. Install at least one boring to a depth of 35,feet using continuous core sampling methods,as discussed in <br /> the conference call between ESA,the Central Valley Regional Water Quality Control Board,and <br /> PHS/EHD. <br /> 3. Begin work within 45 days of workplan approval date. <br /> 4. This site has been reassigned to Sam Savig,EHS,San Joaquin County. Please address all future <br /> correspondence regarding this site to him. Mr. Savig can be reached by telephone at(209)468-3453. <br /> 1 <br /> DATED 10/1/01 BY /� Dot Lofstro RG <br /> cc: CVRWQCB—Marty Hartzell <br /> ESA—Peter Hudson <br /> A Division of San Joaquin County Health Care Services <br />