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i i�TcAPPLIED TESTING CONSULTANTS MATERIALS ENGINEERING TESTING AND INSPECTION Nuclear Density Testing Report Per ASTM 1557 Report seq No cNerm Alliance Environmental Paye 1 of 2 ess 3060 Thomtree Drive,Suite 60 Date 6/4/98 City,state Chico, CA 95973 Tech M Haydon AM Willy Irwin Project Tank Removal Backfill, Stockton Aviation Airport Facility soil Description Tan Silty Sand Gauge a CALIBRATION DATA: Density Std std Dens4 xi xa �i Req'd% Equipment CLOW No T-1 Max Dry Density 108 3 opt Moist content 157 95% W Wet H2O Dry Moisture 7e � Test�! Te Location Eley DensityDensityDens Content Com Resuns 1 12' See Location Map FG-6' 1247 21 6 1032 209 96% PASS 2 12' See Location Map FG-6 1216 195 1021 191 95% PASS 3 12' Sea Location Map FG-4' 1218 198 1020 194 95% PASS 4 12' See Location Mae FG-9' 1 1255 202, 1053 1921 98% PASS 5 17 See Location Map FG-5 2' 1242 212 1031 20 5 96% PASS 6 12' ISea Location Map FG-3 5' 1217 174 1043 1671 97% PASS 7 12' See Location Map FG-4 5' 1 1201 1901 1011 188 94% OK 8 12" See Location Map FG-4' 121 5 185 10301 180 96% PASS 9 12' See Location Map FG-2' 1232 195 1037 188 96% PASS 10 12' 1 See Location Map FG-2' 12551 221, 1034 213 96% PASS REPORT Arrived at jobskte at 0700 hrs to perform compaction testing in backfill material placed in the tank removal area At the time of our arrival, the contractor had completed placing and compacting backfill material to an elevation of approximately 6 0' below Finish Grade(FG) An excavation was made to a depth of 9 0' below FG to check compaction in that portion of the backfill which had been completed prior to our arrival (Test No 4) Performed nuclear density testing from the 6 0'below FG elevation to the top of the backfill at random locations as material was placed Relative compaction test results along with coresponding elevations are indicated above For test locations, please refer to the attached location map Where test results indicated significantly less than the 95% 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 excavation created by the tank removal 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 1200 hrs CP+n to Rewerred by