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Project Name:2026 PMP <br />Sample Dates:4/24/2025 <br />DML 1 DML 2 <br />Parameters mg/kg mg/kg <br />Other (mg/kg) <br />Ammonia NE NE <br />Total Kjeldahl Nitrogen NE NE <br />Nitrate+Nitrite NE NE <br />Total Phosphorous NE NE <br />Total Organic Carbon NE NE <br />Total PCBs 0.82 10 <br />Metals (mg/kg)Optional Methods SW-846; 6010 or 6020 <br />Arsenic 9 9 1.75 1.85 1.76 <1.27 1.96 <br />Cadmium 1.6 23 <0.496 <0.552 <0.699 <0.635 <0.646 <br />Chromium, Total (Trivalent)23,000 100,000 11.4 14.1 9.9 13.4 12.5 <br />Chromium, Hexavalent 2.3 62 <0.492 <0.569 <0.638 <0.554 <0.597 <br />Copper 120 33,000 8.92 15 14 16 23.4 <br />Lead 200 460 7.54 9.71 6.19 3.62 5.86 <br />Mercury 2.7 3.1 <0.0239 <0.0233 <0.0263 <0.0257 <0.0237 <br />Nickel 170 170 12 12.2 7.74 15.2 17.3 <br />Selenium 78 1,200 <1.49 <1.66 <2.10 <1.90 <1.94 <br />Zinc 4,700 70,000 24.5 53 41.4 38.5 47.3 <br />Noncarcinogenic Polycyclic Aromatic Hydrocarbons (PAHs) (mg/kg) <br />Acenapthene 460 6,800 0.0201 0.935 1.05 0.103 1.17 <br />Acenapthylene na na 0.0131 0.392 0.15 0.0325 0.217 <br />Anthracene 2,800 42,000 0.0684 3.58 3.57 0.183 2.42 <br />Benzo(g,h,i)perlyene na na 0.237 7.5 10.7 0.955 7.999 <br />Fluoranthene 210 2,700 0.872 33 43 3.23 32.8 <br />Fluorene 390 5,800 0.0375 2.11 1.73 0.147 1.85 <br />2-Methylnapthalene NE NE <br />Naphthalene 81 280 <br />Phenanthrene NE NE 0.453 19.8 22.2 1.82 20 <br />Pyrene 220 3,200 0.734 26.5 35.5 2.68 26.6 <br />Carcinogenic PAHs & BaP Equiv. (mg/kg) <br />Potency Equiv. <br />Factor (PEF) Site Conc. **BaP Equiv.Site Conc. BaP Equiv.Site Conc. BaP Equiv.Site Conc. BaP Equiv.Site Conc. BaP Equiv. <br />Benz[a]anthracene 0.10 0.0863 0.009 5.36 0.536 11.6 1.160 0.657 0.066 7.69 0.769 <br />Benzo[a]pyrene 1.00 0.100 0.100 5.77 5.770 12.9 12.900 0.981 0.981 8.22 8.220 <br />Benzo(b, j & k)fluoranthenes 0.10 0.211 0.021 18.7 1.870 25.6 2.560 2.31 0.231 22.6 2.260 <br />Chrysene 0.01 0.124 0.001 7.14 0.071 16.0 0.160 0.934 0.009 10.4 0.104 <br />Dibenz[a,h]acridine 0.10 0.0084 0.001 0.26 0.026 0.55 0.055 0.0402 0.004 0.306 0.031 <br />Dibenz[a,h]anthracene 0.56 0.0155 0.009 0.817 0.458 1.82 1.019 0.119 0.067 0.954 0.534 <br />Dibenzo[a,e]pyrene 1.00 0.0184 0.018 0.703 0.703 1.53 1.530 0.106 0.106 0.845 0.845 <br />Dibenzo[a,h]pyrene 10.00 0.0094 0.094 0.316 3.160 0.690 6.900 0.0489 0.489 0.345 3.450 <br />Dibenzo[a,i]pyrene 10.00 0.0082 0.082 0.080 0.800 0.183 1.830 0.0119 0.119 0.0854 0.854 <br />Dibenzo[a,l]pyrene 10.00 0.0054 0.054 0.0502 0.502 0.0951 0.951 0.0062 0.062 0.0515 0.515 <br />7H-Dibenzo[c,g]carbazole 1.00 0.0077 0.008 0.0932 0.093 0.208 0.208 0.0142 0.014 0.113 0.113 <br />7,12 Dimethylbenz-anthracene 34.00 0.0071 0.241 0.0190 0.646 0.0207 0.704 0.0257 0.874 0.0234 0.796 <br />Indeno[1,2,3,-c,d]pyrene 0.10 0.0754 0.008 3.81 0.381 9.62 0.962 0.550 0.055 4.22 0.422 <br />3-Methylcholanthrene 3.00 0.0053 0.016 0.102 0.306 0.311 0.933 0.0061 0.018 0.142 0.426 <br />5-Methylchrysene 1.00 0.0066 0.007 0.0178 0.018 0.0193 0.019 0.0077 0.008 0.0219 0.022 <br />(BaP) Equivalent***2 mg/kg 23 mg/kg 0.67 15.34 31.89 3.10 19.36 <br />Dredge Management Level 1= results less than SRV 1 (suitable for residential landuse) <br />DredgeManagement Level 2= results less than SRV 2 (suitable for industrial landuse) <br />mg/kg = milligrams per kilogram, equivalent to parts per million. <br /> § Benzo-b, Benzo -j and Benzo-k fluoranthene are reported as Benzofluoranthenes (Total) <br />** - Recoveries of numerous cPAHs were outside of method acceptance criteria in quality control samples run on parent sample O-1. The O-1 detections are considered estimated, and non-detected cPAHs are considered to have estimated quantitation limits. <br /><56.8 <br />285 <br />3.87 <br />202 <br />8,900 <br /><64.6 <br />672 <br /><1.35 <br />219 <br />16,200 <br /><75.2 <br />1,390 <br /><1.52 <br />351 <br />44,100 <br />***BaP Equivalent - this sheet is set up to multiply the sample concentration for each parameter by the Potency Equivalency Factor (PEF) and sum them to determine the BaP Equivalent for each sample allowing comparison to the Mgmt. Level <br />431 <br />24,500 <br />111 <br />13,000 <br /><0.123 <br /><0.0266 <br />Dredge Management Level 3- exceeds SRV2 (must be treated or disposed in a landfill with MPCA approved industrial waste management plan) <br /><0.187 <br />0.0897 <br />0.111<0.0189 <br /><0.246<0.122 <br /><0.0228 <br /><0.0163 <br /><66.3 <br />483 <br /><1.28 <br />937 <br /><71.4 <br /><1.47 <br />4/24/2025 <br />O-5 <br />Table 1 <br />Summary of Sediment Testing Results <br />2026 PMP Arden Hills - Karth Lake <br />Project B2502087 <br />O-3 <br />4/24/2025 <br />O-2 <br />4/24/2025 <br />O-1 <br />4/24/2025 <br />Sample Location <br />O-4 <br />4/24/2025 <br />0.0378 <br />0.0664 <br /><0.161 <br />0.0809 <br />0.234