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iTcAPPLIED TESTING CONSULTANTS MATERIALS ENGINEERING TESTING AND INSPECTION Nuclear Density Testing Report Per ASTM 1557 Report 3" No cueat: Alliance Environmental Page 1 of 2 .ss 3060 Thorntree Dnve, Suite 60 Data 6/5x98 C4,5096 Chico, CA 95973 tech M Haydon Aft Willy Irwin project: Tank Removal Backfill, Stockton Aviation Airport Facility sou oewipum Tan Silty Sand Gauge a CABRATION DATA Dens ty Std std DensRy LIxi x, comP°uJOn Req'd% Equipment Curve No. T-1 I Max Ary Density 108 3 opt Moist content 157 95% Test Wet H2O Dry Moisture % Test a Depth Location Elev Density Density Densq Content Corno Results 18 12' See Locabon Map FG-1 0' 1210 180 1030 174 96% PASS 19 12' See Location Map FG-1 0' 121 8 188 1030 183 96% PASS 20 12" See Location Map FG 1192 179 1013 177 94% OK 21 12" See Location Map FG 1226 172 10541 163 98% PASS 22 17 See Location Map FG-1 0' 1231 210 1021 206 95% PASS 23 17 See Location Mae FG-1 0' 1200 179 1021 176 95% PASS 24 12' See Location Map FG 1209 181 1028 176 95% PASS 25 17 See Location Mae FG 1222 1921 1030 187 96% PASS 26 17 See Location Mae FG 121 6 193 102 4 188 95% PASS 27 12' See Location Map FG 12041 1821 102 2 178, 95% PASS REPORT Arrived at jobsite at 0800 hrs to perform compaction testing in backfill material placed around the tank removal area At the time of our arrival,the contractor had completed removing all clay soils beneath the future concrete slab to the satisfaction of the United States Army representative Backfill material was placed in V-8" loose lifts and thoroughly compacted with a vibratory smooth drum roller prior to placement of additional fill soils Nuclear density compaction tests were performed at randomly selected locations to verify that compaction requirements were being met Relative compaction test results along with corresponding elevations are indicated above For test locations, please refer to the attached location map Where test results indicated significantly less than the 95°x6 relative compaction requirement, additional compactive efforts were applied until satisfactory compaction was achieved Based on the test results compiled on this project and witnessing the earthwork operations, it is our judgement that the backfill material placed in the clay removal area beneath the proposed concrete drive slab was properly moisture conditioned and compacted to the requirements of the project plans and specifications and the applicable chapters of the 1994 UBC Departed jobsite at 1330 hrs Copies to Renewed by 3080 Thorntree Drive, Ste 35 • Chico, CA 95973 • Telephone (530) 891-6625 • Facsimile (530) 691-4243