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KLEINFELDER File No. 20-3978-O1.W10 July 26, 1997 5.0 CONCLUSIONS AND RECOMMENDATIONS FOR SDC As stated earlier in this letter, Kleinfelder also conducted a"Pre-Pond Closure Investigation" and groundwater monitoring for Spreckels Development Company. Report references and the conclusions and recommendations detailed in said reports are outlined as follows. 5.1 Pond Closure Investigation (File No 20-3978-02 E01) Based on the results of the assessment conducted in this area, Kleinfelder had the following recommendations detailed in our report "Pond Closure Investigation and Related Groundwater Services, Former Spreckels Sugar Plant No. 2, 18800 South Spreckels Road, Manteca, California, (WDR Order#77-247)"dated April 7, 1997: 1. Kleinfelder does not recommend any further investigation, monitoring or clean-up of the groundwater, the existing waste water pond,the mud ponds,or the lime ponds. '; 0� 2. Kleinfelder recommends the RWQCB rescind the WDRs for the ponds. r� V 3. Kleinfelder recommends that the ponds be razed and that the pond sediments be reused on site. " Also,Kleinfelder recommends that the property owner be allowed to continue to sell the"Spent lime" in the lime ponds as a soil amendment. It is our understanding that Spreckels Development would like Kleinfelder to submit a pond closure plan following receipt of the RWQCB's comments to this report. 4. A copy of this report should be submitted to the San Joaquin County Public Health Services Department Environmental Health (PHS/EHD) and the State of California Regional Water Quality Control Board (RWQCB) for their consideration. A letter of "no further action" should be requested from the appropriate agencies, as outlined in recommendation numbers 1 and 2 (above). 10-3978-01.W10/1017L155 Page 33 of 50 Copyright 1997,Kleinfelder,Inc.