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' DRAFT • , Levine-Fricke-Recon I procedures, the only records documenting the well abandonment are contained in handwritten notes on record drawings prepared by SJC DPW in 1994 (SIC DPW 1994). (LFR contacted SJC DPW to clarify discrepancies and omissions that were identified during the well abandonment evaluation. However, STC DPW requested that all inquiries be made to STC Counsel. STC Counsel has not responded to our inquiries. We are still trying to obtain additional information regarding the LVMD abandonment procedures.) The following sections describe the original well construction, video surveys, well repairs, and well abandonment procedures reported for wells LVMD #1, LVMD #2, LVMD #4, and LVMD #6. Before well abandonment, the pumps, pump houses, and concrete pads were removed from the wells (Nakano 1992; KJC 1991c). According to the plans and specifications, the area around each well casing was excavated and the casings were cut 5 feet below grade (SJC DPW 1992). Following abandonment, the excavations were filled with grout to form a minimum 6-inch-thick cap (SJC DPW 1992). 3.4.1 Well LVMD #1 3.4.1.1 Well Construction According to the Well Data form obtained from SIC DPW, well LVMD #1 was drilled in 1948 using the cable tool drilling method. Details of the original well construction, well repair, and abandonment of well LVMD #1 are presented in Figure 9. Minor differences between the depth of the screened interval reported on the Well Data form (Appendix A) and the screened interval recorded on the video survey log for this well (Appendix D) are noted on Figure 9. The total depth of the boring was 262 feet bgs. A sanitary seal was not installed in well LVMD #1. The well was completed with a 14- inch-diameter outer steel casing from the ground surface to 102 feet bgs and a 12-inch- diameter inner steel casing from 40 to 200 feet bgs. The 12-inch casing had vertical perforations from 160 to 200 feet bgs. The borehole was left open and uncased from 200 feet bgs to 262 feet bgs. Comparison of lithologic data collected from the Site to well construction data for well LVMD #1 indicates that the perforated interval and open borehole of well LVMD #1 appear to have been located across the lower 5 feet of the B/C aquitard and in the upper 100 feet of the C-zone aquifer (LFR 1996a). 3.4.1.2 Well Video and Repair In 1985, SIC DPW conducted a video survey of LVMD #1 to evaluate well integrity and the possible source of VOCs detected in groundwater samples (KJC 1991a). A technical memorandum prepared by KJC presenting a summary of the video log is included in Appendix D. The video log contained the following significant observations concerning well LVMD #1: 4111WELL.AMPAW Page 15