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Don Hoffman <br /> Page 2 <br /> During the inspection of November 9, 1994, the consultant indicated to the PHS/EHD staff person that the <br /> contaminated stockpile was to be taken to Forward Landfill and was sampled according to Forward Landfill protocol. <br /> t <br /> Two composite samples were taken from the contaminated stockpile which is estimated at 200 cy. <br /> The report states that the western 100 cy of contaminated stockpile are to be spread on site. PHS/EHD protocol for <br /> onsite disposal of a stockpile is to obtain a discrete sample for every 25 cy of material. In order for PHS/EHD to <br /> determine if this material can be disposed of on this site, the PHS/EHD sampling protocol must be followed. If } <br /> detectable levels of hydrocarbons are discovered to exceed the LUFT leaching potential analysis limits,then an onsite <br /> remediation workplan shall be submitted to PHS/EHD prior to onsite treatment. If the detectable levels of <br /> hydrocarbons are below the LUFT leaching potential analysis limits, then the stockpile may be spread on site. j <br /> The two drinking water wells on site were abandoned under permit and inspection of PHS/EHD as part of the <br /> remediation project. During the November 9, 1994 inspection, PHS/EHD staff observed that the concrete pedestal <br /> for the drinking water wells had been removed. This allowed the observation to be made that the grout installed as <br /> part of the well construction was either never installed or had vanished. Therefore, the well destruction performed <br /> on October 17, 1994 is incomplete. <br /> In your letter you questioned your qualification for reimbursement. The contact person at SWRCB who can determine <br /> your ranking for reimbursement is Jesus Genera at (916) 227-4514. <br /> In summary, PHS/EHD requires the following items at this time to continue processing the remediation of this site: <br /> 1. The mass balance of the groundwater plume should be calculated based on computer modeling for <br /> size and residual concentration of Diesel and BTEX in order to establish a baseline for remediation <br /> or an appraisal for leaving it in place. a <br /> i <br /> 2. The groundwater monitoring wells shall be re-sampled for BTEX and TPH-Diesel quarterly until <br /> the site has received closure status. <br /> 3. Stockpiles that are to be left on site shall have one discrete sample for every 25 cy of material. <br /> 4. The drinking water wells shall be re-abandoned. <br /> ,r <br /> For further information please call Steve Sasson at (209) 468-3459. <br /> 1 <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> teven Sasson, Senior REHS Diane M. Hinson, REHS <br /> Site Mitigation Unit Supervisor <br /> SS i <br /> cc: SWRCB, Underground Storage Tank Program j <br /> cc: CVRWQCB, Undrground Storage Tank Unit <br /> cc: '' Terra Search <br /> Tom Makdissy <br /> 1580 North Fourth Street <br /> San Jose, CA 95202 <br /> k <br /> { <br />