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Report # 16-858 Page 1 of 10

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Client: T004 - TRC-Lowell Report Number: 16-858 ═══════════════════════════════════════════════════════════════════════

Lab ID: 16-Q1017 Client ID: Goth-1-TSP Site: MoCo RRF Volume: 1657. m³ Deposit Area: 406. cm² Size Fraction: TSP Comments: Loose GPM.

µg/filter µg/m³ Analyte Conc. MDL Conc. MDL Gravimetry Net Mass 83,200. 50.21 ICP As < MDL 1.71 < MDL 0.00103 Be 0.102 0.049 0.00006 0.00003 Cd 0.977 0.122 0.00059 0.00007 Cr 3.62 0.122 0.00219 0.00007 Ni 1.88 0.245 0.00113 0.00015 Pb 12.7 1.22 0.00769 0.00074

CVAA Hg 0.2507 0.04280 0.00015 0.00003

Lab ID: 16-Q1018 Client ID: Blank Site: MoCo RRF Deposit Area: 406. cm²

µg/filter Analyte Conc. MDL Gravimetry Net Mass 200. ICP As < MDL 1.71 Be < MDL 0.049 Cd < MDL 0.122 Cr 1.82 0.122 Ni 0.517 0.245 Pb < MDL 1.22

CVAA Hg < MDL 0.04280

Lab ID: 16-Q1019 Client ID: Chiswell-1-TSP Site: MoCO RRF Volume: 1641. m³ Deposit Area: 406. cm² Size Fraction: TSP

µg/filter µg/m³ Analyte Conc. MDL Conc. MDL Gravimetry Net Mass 22,400. 13.65 ICP As < MDL 1.71 < MDL 0.00104 Be 0.056 0.049 0.00003 0.00003 Cd 3.30 0.122 0.00201 0.00007 Cr 2.68 0.122 0.00163 0.00007 Ni 1.43 0.245 0.00087 0.00015 Pb 3.46 1.22 0.00211 0.00075

CVAA Hg 0.06114 0.04280 0.00004 0.00003

Analysis performed by: CHESTER LabNet 12242 SW Garden Place ♦ Tigard, OR 97223 ♦ (503) 624-2183 ♦ www.chesterlab.net

Report # 16-858 Page 3 of 10

Client: T004 - TRC-Lowell Report Number: 16-858 ═══════════════════════════════════════════════════════════════════════

Lab ID: 16-Q1020 Client ID: Poolesville-1-TSP Site: MoCo RRF Volume: 1673. m³ Deposit Area: 406. cm² Size Fraction: TSP

µg/filter µg/m³ Analyte Conc. MDL Conc. MDL Gravimetry Net Mass 20,900. 12.49 ICP As < MDL 1.71 < MDL 0.00102 Be < MDL 0.049 < MDL 0.00003 Cd 0.136 0.122 0.00008 0.00007 Cr 2.40 0.122 0.00143 0.00007 Ni 1.15 0.245 0.00069 0.00015 Pb 2.44 1.22 0.00146 0.00073

CVAA Hg 0.04892 0.04280 0.00003 0.00003

Lab ID: 16-Q1021 Client ID: Goth-2-TSP Site: MoCo RRF Volume: 1643. m³ Deposit Area: 406. cm² Size Fraction: TSP

µg/filter µg/m³ Analyte Conc. MDL Conc. MDL Gravimetry Net Mass 28,000. 17.04 ICP As < MDL 1.71 < MDL 0.00104 Be 0.050 0.049 0.00003 0.00003 Cd 0.175 0.122 0.00011 0.00007 Cr 2.43 0.122 0.00148 0.00007 Ni 1.03 0.245 0.00063 0.00015 Pb 2.49 1.22 0.00152 0.00074

CVAA Hg < MDL 0.04280 < MDL 0.00003

Analysis performed by: CHESTER LabNet 12242 SW Garden Place ♦ Tigard, OR 97223 ♦ (503) 624-2183 ♦ www.chesterlab.net

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Client: T004 - TRC-Lowell Report Number: 16-858 ═══════════════════════════════════════════════════════════════════════

Lab ID: 16-Q1022 Client ID: Chiswell-2-TSP Site: MoCo RRF Volume: 1643. m³ Deposit Area: 406. cm² Size Fraction: TSP

µg/filter µg/m³ Analyte Conc. MDL Conc. MDL Gravimetry Net Mass 26,900. 16.37 ICP As < MDL 1.71 < MDL 0.00104 Be < MDL 0.049 < MDL 0.00003 Cd 0.689 0.122 0.00042 0.00007 Cr 2.22 0.122 0.00135 0.00007 Ni 2.28 0.245 0.00139 0.00015 Pb 2.67 1.22 0.00163 0.00074

CVAA Hg < MDL 0.04280 < MDL 0.00003

Analysis performed by: CHESTER LabNet 12242 SW Garden Place ♦ Tigard, OR 97223 ♦ (503) 624-2183 ♦ www.chesterlab.net

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