SITE INFORMATION AND CORRESPONDENCE

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P ENVIRONMENTAL HEALTH DEPARTMENT SAN JOAQUIN COUNTY Unit Supervisors _ ? K Donna K.Heran,R.E.H.S. Carl Borgman,R.E.H.S. Q. J1`•.. %' •� 304 East Weber Avenue, Third Floor Director Mike Huggins,R.E.H.S.,R.D.I. Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. • cd �P• Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. �i F 6"ji Laurie A.Cotulla,R.E.H.S. Robert McClellon,R.E.H.S. Program Manager Fax: (209) 464-0138 Mark Barcellos,R.E.H.S. TEICHERT AGGREGATES MAY U q 2003 BECKY WOOD 3500 AMERICAN RIVER DR SACRAMENTO CA 95864 Re: Teichert Aggregates Site Code: PR#0521467 29099 S. MacArthur Rd. Tracy, CA. 95376 San Joaquin County Environmental Health Department (EHD) has reviewed Investigation Work Plan as submitted by Planet Industries Inc., on May 6, 2003 and has the following comments. The proposal is a continuation of investigation for soil contamination detected during a previous investigation (October 2002) done without notification to or oversight by EHD. EHD was indirectly notified of the activities when a contractor bidding for the placement of subsurface enhanced biologicals for Planet Industries' called EHD with permitting questions. The proposal included information that this work is voluntary and the storage vessels are considered exempt. In discussions with Teichert, it was explained that steel underground vessels that stored heated asphalt were removed from an area at Teichert and soil samples were collected and analyzed for motor oil. Due to misunderstandings during a phone call conversation with "someone at EHD", these vessels were removed without EHD involvement. The same misunderstanding allowed Teichert to later drill and sample the soil beneath the vessels without oversight or the required well permit. On March 10, 2003, an EHD representative walked the site and advised Teichert of some of the requirements needed to continue investigating the site. It was concluded that a work plan would be submitted. The work plan was to include the history of the above and below ground activities, including the chemicals used in the processes at Teichert and more information on the vessels. Maps showing where the borings were advanced, sample depths, and analyses performed were also to be included in the work plan. Laboratory data (analyses, QA/QC, chromatograms)would also help EHD understand the previous investigation better. EHD also requested that a professional discussion and conclusion of the findings be presented, recommendations for any additional work, and Teichert's response expectations from EHD.