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= r M M = = = = TABLE I (Con't) EVAX TECHNOLOGIES, INC. EXTRACTION WELL SUMMARY SITE: Beacon Station #696 Incinerator Start Up: 16 August 1991 800 Highway 12 Incinerator Shut Down 21 September 1992 LOD1, California E%TRACTION WELL MW-20 NN-24 NW-28 Mu-34 MW-35 DATE INSTR TVH VP TVH VP TVH VP TVH VP TVH VP -------------- ---- ----------------------------------------------------------------------------- ---- --- 09/09/92 OVA 250 C 5 C 10 C NO C 3 -C- 08/25/92 OVA 110 0 NO C ND C ND 0 NO C 08/13/92 OVA 10 0 10 C NO C NO 0 5 C 07/29/92 FID 23 0 ND C ND C 2 0 5 C 07/14/92 OVA ND 0 NO C NO C NO 0 ND C 06/30/92 OVA 25 0 NO C ND C NO 0 5 C 06/16/92 OVA 450 0 5 C ND C NO 0 5 C 06/03/92 OVA 6 0 NO C NO C ND 0 ND C 05/19/92 OVA 9 0 NO C ND C NO 0 10 C 05/06/92 OVA 200 0 10 C ND C NO 0 4 C 04/22/92 OVA 300 0 ND C NO C ND 0 ND C 04/08/92 FID 45 0 35 C 75 C NO 0 120 C 03/24/92 OVA 350 0 5 C ND C NO 0 70 0 03/11/92 OVA 500 0 10 C NO C 5 0 5 C 02/25/92 OVA 3,000 0 20 C ND C ND 0 15 C 02/07/92 OVA 950 0 11 C 8 C 4 0 8 C 01/09/92 FID 4,200 0 3 C 6 C 80 0 3 C 12/23/91 FID 520 0 5 C 3 0 NO 0 50 0 12/11/91 FID 380 0 30 C 4,850 0 20 0 240 0 11/25/91 FID 450 0 10 0 6,000+ 0 ND 0 200 0 10/28/91 FIO 108 0 ND 0 15 0 25 0 400 0 10/15/91 FID 160 0 NO C 18 C 30 0 490 0 10/03/91 FID 230 0 34 C 59 C 2 0 580 0 09/13/91 FID 53 C 17 C 1 C 200 0 360 0 START-UP TLV 1,600 C 340 C 160 C 400 C 1,600 C SCREENED INTERVAL NA NA NA NA NA EXTRACTION WELL - Extraction well identification as indicated on site plan INTERVAL - Screened Interval of Well in Feet Below Grade TVH - Total Volatile Hydrocarbons in parts per million (ppm) on a volume/volume basis TLV - Threshold Limit Values meter detects combustible gases by oxidation using a hexane standard FID - Portable hydrocarbon monitor equipped with a Flame Ionization Detector OVA - Organic Vapor Analyzer equipped with FID VP - Manifold valve position (0 = Open) (C = Ctosed) NO - Not Detected. Detection limit 1 ppm. NA - Not Available