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MIDCONTINENT <br />2381 South Plaza Drive P.O. Box 3388 Rapid City, SD 57709 <br />(605) 348-0111 -- www.thechemistrylab.com <br />QC Sample Report <br />Page 1 <br />Lab Numbers: 20150129701 - 20150129702 <br />QC SMP <br />Parameter Lab# Value Value Spike DF Result Limits Method <br />Spike <br />Mercury - T <br />0204106 <br />0.0019 <br />< 0.0002 <br />0.002 <br />1 <br />95.0 % <br />(84.93) - (112.1) <br />EPA 245.1 <br />Mercury - T <br />0204101 <br />0.0020 <br />< 0.0002 <br />0.002 <br />1 <br />98.5 % <br />(84.93) - (112.1) <br />EPA 245.1 <br />Mercury - T <br />0129701 <br />12.26 <br />6.985 <br />0.002 <br />2500 <br />105.5 % <br />(89.74) - (118.4) <br />EPA SW846 7471 B <br />Arsenic - TR <br />0204101 <br />0.239 <br />0.007 <br />0.025 <br />10 <br />92.6 % <br />(82.70) - (108.2) <br />EPA 200.8 <br />Arsenic - TR <br />0204108 <br />0.265 <br />0.031 <br />0.025 <br />10 <br />93.6 % <br />(82.70) - (108.2) <br />EPA 200.8 <br />Barium - TR <br />0204101 <br />0.407 <br />0.185 <br />0.025 <br />10 <br />88.6 % <br />(80.51) - (109.3) <br />EPA 200.8 <br />Barium - TR <br />0204108 <br />0.242 <br />0.009 <br />0.025 <br />10 <br />93.3 % <br />(80.51) - (109.3) <br />EPA 200.8 <br />Cadmium - TR <br />0204108 <br />0.239 <br />< 0.001 <br />0.025 <br />10 <br />95.4 % <br />(83.80) - (107.0) <br />EPA 200.8 <br />Cadmium - TR <br />0204101 <br />0.227 <br />< 0.001 <br />0.025 <br />10 <br />90.8 % <br />(83.80) - (107.0) <br />EPA 200.8 <br />Chromium - TR <br />0204101 <br />0.232 <br />< 0.001 <br />0.025 <br />10 <br />92.7 % <br />(80.40) - (105.9) <br />EPA 200.8 DRC <br />Chromium - TR <br />0204108 <br />0.222 <br />< 0.001 <br />0.025 <br />10 <br />88.6 % <br />(80.40) - (105.9) <br />EPA 200.8 DRC <br />Lead - TR <br />0204108 <br />0.249 <br />< 0.001 <br />0.025 <br />10 <br />99.5 % <br />(86.14) - (106.1) <br />EPA 200.8 <br />Lead - TR <br />0204101 <br />0.242 <br />< 0.001 <br />0.025 <br />10 <br />96.8 % <br />(86.14) - (106.1) <br />EPA 200.8 <br />Selenium - TR <br />0204108 <br />1.22 <br />< 0.005 <br />0.125 <br />10 <br />98.0 % <br />(81.00) - (122.1) <br />EPA 200.8 <br />Selenium - TR <br />0204101 <br />1.19 <br />< 0.005 <br />0.125 <br />10 <br />94.9 % <br />(81.00) - (122.1) <br />EPA 200.8 <br />Silver - TR <br />0204101 <br />0.231 <br />< 0.001 <br />0.025 <br />10 <br />92.3 % <br />(85.84) - (107.1) <br />EPA 200.8 <br />Silver - TR <br />0204108 <br />0.222 <br />< 0.001 <br />0.025 <br />10 <br />88.7 % <br />(85.84) - (107.1) <br />EPA 200.8 <br />Mercury - TCLP <br />0129703 <br />0.0022 <br />< 0.0002 <br />0.002 <br />1 <br />109.0 % <br />(87.20) - (115.5) <br />EPA SW846 7471 B <br />Matrix Spike Duplicate <br />Mercury - T <br />0204106 <br />0.0019 <br />0.0019 <br />1 <br />-1.59% <br />(-11.57) - (6.093) <br />EPA 245.1 <br />Mercury - T <br />0204101 <br />0.0019 <br />0.0020 <br />1 <br />-4.15% <br />(-11.57) - (6.093) <br />EPA 245.1 <br />Mercury - T <br />0129701 <br />12.41 <br />12.26 <br />2500 <br />1.24% <br />(-14.79) - (20.47) <br />EPA SW846 7471 B <br />Arsenic - TR <br />0204101 <br />0.237 <br />0.239 <br />10 <br />-0.828% <br />(-9.680) - (8.049) <br />EPA 200.8 <br />Arsenic - TR <br />0204108 <br />0.257 <br />0.265 <br />10 <br />-2.92% <br />(-9.680) - (8.049) <br />EPA 200.8 <br />Barium - TR <br />0204101 <br />0.405 <br />0.407 <br />10 <br />-0.572% <br />(-8.099) - (8.726) <br />EPA 200.8 <br />Barium - TR <br />0204108 <br />0.240 <br />0.242 <br />10 <br />-0.705% <br />(-8.099) - (8.726) <br />EPA 200.8 <br />Cadmium - TR <br />0204101 <br />0.230 <br />0.227 <br />10 <br />1.34% <br />(-7.137) - (7.966) <br />EPA 200.8 <br />Cadmium - TR <br />0204108 <br />0.235 <br />0.239 <br />10 <br />-1.49% <br />(-7.137) - (7.966) <br />EPA 200.8 <br />Chromium - TR <br />0204108 <br />0.219 <br />0.222 <br />10 <br />-1.30% <br />(-4.953) - (4.998) <br />EPA 200.8 DRC <br />Chromium - TR <br />0204101 <br />0.232 <br />0.232 <br />10 <br />0.082% <br />(-4.953) - (4.998) <br />EPA 200.8 DRC <br />Lead - TR <br />0204108 <br />0.247 <br />0.249 <br />10 <br />-0.779% <br />(-6.189) - (6.412) <br />EPA 200.8 <br />Lead - TR <br />0204101 <br />0.243 <br />0.242 <br />10 <br />0.593% <br />(-6.189) - (6.412) <br />EPA 200.8 <br />Selenium - TR <br />0204108 <br />1.20 <br />1.22 <br />10 <br />-2.10% <br />(-6.723) - (6.478) <br />EPA 200.8 <br />Selenium - TR <br />0204101 <br />1.16 <br />1.19 <br />10 <br />-1.80% <br />(-6.723) - (6.478) <br />EPA 200.8 <br />Silver - TR <br />0204108 <br />0.220 <br />0.222 <br />10 <br />-0.665% <br />(-6.414) - (7.129) <br />EPA 200.8 <br />Silver - TR <br />0204101 <br />0.235 <br />0.231 <br />10 <br />1.81% <br />(-6.414) - (7.129) <br />EPA 200.8 <br />Mercury - TCLP <br />0129703 <br />0.0023 <br />0.0022 <br />1 <br />4.92% <br />(-17.05) - (14.17) <br />EPA SW846 7471 B <br />