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WH <br /> Inc. Environmental and Eng <br /> eering Group <br /> ostOftice Box 576729 <br /> -- Made ,Gyk 95357-6729 <br /> Ofe :' (209) 579-8138 <br /> FAX : (209) 579- 1652 <br /> April 29, 1994 <br /> Ms. Diane M. Hinson, REHS <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P . O . Box 2009 <br /> Stockton, CA 95201 -2009 <br /> RE: Canepa's Car Wash, Pacific Ave. , Stockton <br /> Dear Diane, <br /> This cover letter is an effort to summarize the current situation at Canepa's Car Wash on <br /> Pacific Avenue in Stockton. <br /> We have discovered a significant mounding of the groundwater near the center of the <br /> contamination plume. The mound is approximately one foot higher than the normal <br /> groundwater as measured in the perimeter wells. This condition will accelerate the <br /> movement of contaminated groundwater from the site. As a consequence of this urgent <br /> situation, I am meeting with Remo Canepa today to see if we can isolate the source of <br /> what is probably a water leak somewhere in the car wash, and make repairs. <br /> In addition, we would like to immediately perform a 24 hour drawdown test on MW- 1 , a <br /> 4" well located in the mound area. We want to determine the capture radius of the well, <br /> and see if we can reduce the mounding and pull the contamination back towards the center foo <br /> of the site. We propose to pump approximately 60,000 gallons of water at a rate of 5 gpm <br /> and treat the water with carbon prior to discharge into the sewer system. We will obtain <br /> the appropriate permit from the City P . O. T .W. prior to making a discharge to the sewer. <br /> Please call us if you have any comments or objections to this proposed action. <br /> Thank you. <br /> Sincerely, <br /> Steve Furnas <br /> WHF, Inc. <br />