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TRENCH GRIT SAMPLE RESULTS - 01 <br /> Collected date/time: 09/05/25 08:00 L1895744 <br /> Total Solids by Method 2540 G-2011 <br /> Result Qualifier Dilution Analysis Batch FP1 <br /> Analyte % date/time <br /> I <br /> Total Solids 37.6 1 09/10/2025 09:41 WG2597058 TC <br /> Wet Chemistry by Method 9034/9030B FSS <br /> Result(dry) Qualifier RDL(dry) Dilution Analysis Batch <br /> Analyte mg/kg mg/kg date/time [Cn] <br /> Sulfide ND 199 1 09/10/2025 23:01 WG2597222 <br /> Wet Chemistry by Method 9056A <br /> Result(dry) Qualifier RDL(dry) Dilution Analysis Batch <br /> FQCI <br /> Analyte mg/kg mg/kg date/time <br /> Fluoride 6.24 5.53 1.04 09/11/202515:45 WG2597509 <br /> Sulfate ND 138 1.04 09/11/202515:45 WG2597509 FGI <br /> Mercury by Method 7471B <br /> Result(dry) Qualifier RDL(dry) Dilution Analysis Batch AI <br /> Analyte mg/kg mg/kg date/time <br /> Fc <br /> Mercury ND 0.106 1 09/11/202513:33 WG2597236 <br /> Metals (ICP) by Method 6010D <br /> Result(dry) Qualifier RDL(dry) Dilution Analysis Batch <br /> Analyte mg/kg mg/kg date/time <br /> Antimony 8.51 5.32 1 09/10/202512:25 WG2597273 <br /> Arsenic 5.67 5.32 1 09/10/202512:25 WG2597273 <br /> Barium 976 J6 1.33 1 09/10/202512:25 WG2597273 <br /> Beryllium ND 0.532 1 09/10/202512:25 WG2597273 <br /> Cadmium 2.61 1.33 1 09/10/202512:25 WG2597273 <br /> Chromium 341 J6 2.66 1 09/10/202512:25 WG2597273 <br /> Cobalt 12.5 2.66 1 09/10/202512:25 WG2597273 <br /> Copper 1240 J3 V 5.32 1 09/10/202512:25 WG2597273 <br /> Lead 110 1.33 1 09/10/202512:25 WG2597273 <br /> Molybdenum 37.8 1.33 1 09/10/202512:25 WG2597273 <br /> Nickel 289 J3 J6 5.32 1 09/10/202512:25 WG2597273 <br /> Selenium ND 5.32 1 09/10/202512:25 WG2597273 <br /> Silver 4.61 2.66 1 09/10/202512:25 WG2597273 <br /> Thallium ND J6 5.32 1 09/10/202512:25 WG2597273 <br /> Vanadium 25.6 5.32 1 09/10/202512:25 WG2597273 <br /> Zinc 1600 V 13.3 1 09/10/202512:25 WG2597273 <br /> Volatile Organic Compounds (GC/MS) by Method 8260D <br /> Result(dry) Qualifier RDL(dry) Dilution Analysis Batch <br /> Analyte mg/kg mg/kg date/time <br /> Acetone 0.981 0.432 1 09/16/202511:05 WG2599664 <br /> Acrylonitrile ND 0.0540 1 09/16/202511:05 WG2599664 <br /> Benzene 0.0112 0.00432 1 09/16/202511:05 WG2599664 <br /> Bromobenzene ND 0.0540 1 09/16/202511:05 WG2599664 <br /> Bromodichloromethane ND 0.0108 1 09/16/202511:05 WG2599664 <br /> Bromoform ND 0.108 1 09/16/202511:05 WG2599664 <br /> Bromomethane ND 0.0540 1 09/16/202511:05 WG2599664 <br /> n-Butylbenzene ND 0.0540 1 09/16/202511:05 WG2599664 <br /> sec-Butyl benzene ND 0.0540 1 09/16/202511:05 WG2599664 <br /> tert-Butyl benzene ND 0.0216 1 09/16/202511:05 WG2599664 <br /> Carbon tetrachloride ND 0.0216 1 09/16/202511:05 WG2599664 <br /> Chlorobenzene ND 0.0108 1 09/16/202511:05 WG2599664 <br /> ACCOUNT: PROJECT: S DG: DATE/TIME: PAGE: <br /> UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895744 09/23/25 10:17 5 of 53 <br />