ARCHIVED REPORTS_REPORT OF ADDITIONAL SOIL AND GROUNDWATER INVESTIGATION

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PROJECT: BURNS- POMBO PROPERTIES �± Tracy, California Lag of Boring No. GMX-9 BORING LOCATION: 100 feet southeast of EB-3 ELEVATION AND DATUM: Not surveyed DATE STARTED: DATE FINISHED: DRILLING CONTRACTOR: Precision Sampling, Inc. 9/23/99 9/23/99 DRILLING METHOD: Direct push TOTAL DEPTH: MEASURING POINT: p 16 feet Ground surface DRILLING EQUIPMENT: XD-3 DEPTH TO WATER: ; FIRST COM PL. 13 feet NA SAMPLING METHOD: Enviro-core sampling s LOGGED BY: P 9 Y stem�3 ft. x 1 5/8 in.) L.B.Jorstad ' HAMMER WEIGHT: NA DROP: NA RESPONSIBLE PROFESSIONAL: REG.NO. SAMPLES D.A. Zemo CEG 1747 _ ^ DESCRIPTION 4. d n a ¢ a NAME(USCS Symbol):color,moist,%by weight.,Plast.,consistency, structure,cementation,react.w/HCI.geo.inter. REMARKS Lu E ° E ;o °o E a ZLL cn in m o Surface Elevation: Not surveyed SILTY SAND with GRAVEL (SM) Upper 3 feet logged Pale brown (10YR 6/3), moist, 70%fine to coarse sand, 15% using soil cuttings 1 fine gravel, 15% medium plasticity fines, contains asphalt extracted from core debris [FILL] barrel. 2- 3- - 4 CLAYEY SAND (SC) 5 Brown (7.5YR 4/2), moist, 70%fine to coarse sand, 30% medium plasticity fines 6 ' 7 Dark gray (5Y 4/1), hydrocarbon odor ' 8 crux-9- LEAN CLAY with SAND (CL) 8.5 100 Dark gray (5Y 4/1), moist, 75%fines, 25%fine sand, medium g plasticity, firm, hydrocarbon odor and product globules 10 so LEAN CLAY (CL) Dark gray (5Y 4/1), moist, 90%fines, 10%fine sand, medium 11 plasticity, firm, hydrocarbon odor and product globules ' 12 150 ' 13 CLAYEY SAND (SC) Dark gray (5Y 4/1), wet, 70%fine to medium sand, 30% 14 3 medium plasticity fines, hydrocarbon odor Light olive brown (2.5Y 5/3) 15 B-1(12/95) ' Project No. 5650 Geomatrix Consultants Figure --- ai