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Doug O'Neal • • April 24, 2002 Page 3 assessment, wells SMW-1 through SMW-6 are identified as monitoring wells to be sampled under MRP 5-01-269 (effective as of December 7, 2001). The 2001 Annual Report and a December 14, 2001 letter from the facility indicate that well TP-3A could not be sampled during the fourth quarter 2001 sampling event because a bailer became lodged in the well casing. GSU would appreciate an update on the status of this well. In January 2002, the facility provided a status report (Dudek 2002) on the protective measures for the monitoring network that were to be implemented after DTSC approval (DTSC 2001b). GSU would appreciate an updated status report regarding the protective measures. As summarized in Table 1 (attached), elevated final turbidity measurements were identified in four wells during the fourth quarter 2001. However, only well KEW-4U is recommended for redevelopment. As discussed in DTSC (2002), wells with elevated turbidity measurements (e.g., greater than 5 nephelometric turbidity units (NTU)) require an adjustment in the purging/sampling procedures or maintenance (e.g., redevelopment). Wells that cannot consistently produce low turbidity groundwater samples, representative of subsurface conditions, must be decommissioned and replaced. Table 3 and Appendix E of the 2001 Annual Report provide tabulated summaries of volatile organic compounds detected in groundwater samples. To facilitate GSU's review, Table 3 of the 2002 Annual Report should summarize all analytical results (detects and non-detects) for samples collected during the 2002 reporting year. It would be helpful if the 2002 Annual Report includes a comprehensive tabulated summary of historical analytical data (including non-detected results). This tabulated summary could be submitted either as an appendix or electronically (Excel format). REFERENCE DTSC. 2001 a. GSU Comments on Summary of Groundwater Quality Kearney-KPF Facility, Stockton, California, October 2000 and 2000 Annual Report. July 11, 2001. DTSC. 2001 b. Technical Issues Associated With Responses to Potential Violations Cited by DTSC, Groundwater Operation and Maintenance Inspection, Former Kearney-KPF Facility, Stockton, California. November 2, 2001. DTSC. 2002. GSU Comments on Water Quality Sampling and Analysis Plan, Former Kearney- KPF Facility, 1624 East Alpine Avenue, Stockton, CA 95295. February 21, 2002. Dudek and Associates (Dudek). 2002. Update on Status of Protective Measures for Threatened Wells at Former Kearney-KPF Facility. January18, 2002.