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CENTRAL VAL*( REGIONAL WATER OUALO( CONTROL BOARD INSPECTION REPORT 10 January 1992 DISCHARGER: Re-Manufacturing, Ltd. LOCATION & COUNTY: E. Charter Way, Stockton, San Joaquin County CONTACT(S): Stanley S. Moore INSPECTION DATE: 17 December 1991 INSPECTED BY: Jean McCue ACCOMPANIED BY: BACKGROUND: I conducted an inspection of the Re-Manufacturing facility on 17 December 1991 . At the time of my previous inspection, on 12 November 1991, the Ione clay cap had just been completed and samples for laboratory permeability tests were collected by Neil 0. Anderson & Associates. The clay cap was then left uncovered. Mr. Moore reported that they were wetting the surface of the cap daily to keep it from cracking. According to Re-Manufacturing's approved closure plan and the minimum requirements of Chapter 15, field permeability tests of the clay cap are to be conducted. Mr. Moore has stated that he is researching the cost of air permeameter testing to try to get the best price, although he doesn't believe the field testing is necessary. He decided to complete the drainage layer and final cover on the cap in the mean time and will have to repair the damage to those layers when the field tests are performed. Rains prior to my 17 December 1991 inspection had made the surface of the cap too slippery to work. Mr. Moore had been waiting for the clay to dry out enough to run equipment over it. Mr. Moore called on 16 December 1991 to inform me that he had added some road base material to the top of the clay cap to make it a more workable surface and wanted to lay down the drainage layer the following day. He had placed approximately 20 tons of the road base material over the top of the clay and compacted it. I asked Mr. Moore if he had discussed this with his consultant, Nora Kataoka from Water Work Corp. . He said he hadn't been able to reach her. I reminded him that a certified professional needs to certify that the cap was constructed according to the specifications in the approved closure plan. Mr. Moore contacted Water Work Corp. and Anderson & Associates. He informed me that Anderson & Associates would sign off on the drainage layer construction. OBSERVATIONS AND COMMENTS: When I arrived on site, they had already placed the filter fabric over the clay cap and placed approximately 100 tons of gravel over the top. Therefore, I did not see the condition of the clay cap beneath it or the road base material . The size of the gravel for the drainage layer is 1/2-inch "through a grizzly", according to Mr. Moore. The drainage material looked fairly clean, except for some clumps of Ione clay mixed in. Mr. Moore explained that the gravel was stockpiled in the same place as the Ione clay had been. So, once they reached