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PUBL*�CHEALTH SE.�ICES �: �°'�� c <br /> .o <br /> SAN JOAQUIN COUNTY <br /> JOGi KHANNA M.D..M.M. <br /> Heilch Officer <br /> • Ct• P <br /> P.O. Sox 2009 • (1601 Ease Hazelton Avenue) • Stockton, California 95201 <br /> (209) 468-3400 <br /> Memorandum <br /> i <br /> i <br /> Date: September 28, 1993 <br /> To: Jose Zepeda <br /> San.Joaquin County Public Works Department <br /> From: Mary Meays, Senior REHS <br /> San Joaquin County Environmental Health <br />' Re: 4491 West Durham Ferry Road, Tracy <br /> Encroachment Permits <br /> San Joaquin County Public Health Services,Environmental Health Division(PHS/EHD)has <br /> completed review of the "Work Plan, Soil and Groundwater Investigation".dated September <br /> 15, 1993 and prepared by RESNA. PHS/EHD has approved-the work plan which included: <br /> (6) 8" soil borings:3 on site and,3 off site; <br /> (4) 8" soil borings - converted into monitoring wells: <br /> 1 on site and 3 off site; <br /> (3) 10" soil borings - converted into vapor extraction wells: <br /> 3 on site; and <br /> (1) 10" soil boring converted into an on site extraction well. <br /> The work is necessary, in order to proceed with the investigation of petroleum-hydrocarbon <br /> contamination which resulted from leaking underground storage tanks.- The off site work, <br /> consisting of six borings, is located in San Joaquin 'County easements; therefore, an <br /> encroachment permit from San Joaquin County Public Works will be necessary prior to <br /> PHS/EHD issuance of drilling permits. Please contact me at (209) 468-0337 if you require <br /> additional information. <br /> A Division of san Joaquin Counry Health Ciwc Services <br />