Groundwater Monitoring Results

BMC Quarry

Date Lab Well Number Antimony Arsenic Barium Beryllium Boron Cobalt Cadmium Chromium Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Vanadium Zinc Chloride Sulfate

mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L

Suggested Test Method 6010 6010 6010 6010 6010 6010 6010 6010 7470 6010 6010 6010 6010 6010 6010

Groundwater Standard 0.006 0.01 2 0.004 1 0.0021 0.005 0.1 1.3 N/A 0.015 N/A 0.3 0.002 0.04 0.1 0.05 0.1 0.002 0.049 2 N/A N/A

Method Detection Limits 0.0002 0.0003 0.0006 0.00005 0.004 0.0001 0.0002 0.0009 0.0004 0.038 0.0002 0.003 0.0019 0.00002 0.0001 0.0001 0.0002 0.0012 0.0002 0.0007 0.0023 8.2 8

Keystone Method Reporting Limits 0.002 0.004 0.004 0.004 0.1 0.004 0.001 0.01 0.004 0.1 0.004 0.1 0.01 0.0002 0.004 0.004 0.004 0.004 0.004 0.01 0.01 25 25

Practical Quantitation Limits - CH 113 0.03 0.5 0.02 0.003 0.04 0.07 0.06 0.4 0.002 0.15 0.75 0.07 0.4 0.08 0.02

Upgradient Well

1/15/2010 Keystone Labs Reiter Farm ND ND 0.111 ND ND 0.0003 ND ND 0.0054 0.109 0.0008 21.9 0.0146 0.00004 0.0008 0.0052 0.0011 ND ND ND 0.0706 53.6 509

2/18/2010 Keystone Labs Reiter Farm 0.0005 0.0006 0.111 ND 0.019 0.0002 0.0002 ND 0.003 0.121 0.0005 21.3 0.0043 0.00008 0.0006 0.0039 0.001 ND ND ND 0.0537 20.3 40.5

3/16/2010 Keystone Labs Reiter Farm ND 0.0022 0.085 ND 0.059 0.0002 ND 0.0038 0.0029 0.073 0.0005 20.5 0.0059 ND 0.0002 0.0034 0.0012 ND ND 0.0031 0.0375 24.6 17.5

4/15/2010 Keystone Labs Reiter Farm 0.0003 ND 0.113 ND 0.022 0.0002 ND ND 0.0018 0.098 0.0003 22.4 0.0046 0.00003 0.0004 0.0028 0.0018 ND ND ND 0.0363 20 25.4

5/17/2010 Keystone Labs Reiter Farm 0.0002 0.0009 0.114 ND 0.043 ND ND ND 0.0019 0.067 0.0008 21.5 0.0043 ND 0.0003 0.0033 0.0015 ND ND ND 0.0326 20.4 24.1

6/21/2010 Keystone Labs Reiter Farm ND 0.0013 0.115 ND 0.021 0.0002 ND 0.002 0.0062 ND 0.0002 22.2 0.0032 ND 0.0007 0.0042 0.0012 ND ND ND 0.0444 20.4 29.8

7/16/2010 Keystone Labs Reiter Farm 0.0005 ND 0.119 0.0004 0.016 0.0003 0.0003 0.0021 0.0074 ND 0.0008 24.8 0.0035 0.00008 0.0007 0.0048 0.0016 ND ND ND 0.0561 25.5 27.8

8/18/2010 Keystone Labs Reiter Farm 0.0006 0.0019 0.132 0.0002 0.028 0.0003 ND 0.001 0.0034 ND ND 22.4 ND ND 0.0004 0.0253 0.0012 ND 0.0003 0.0081 0.0809 29.9 54.4

9/20/2010 Keystone Labs Reiter Farm ND 0.0006 0.0984 0.0002 0.063 0.0002 0.0003 ND 0.0025 ND ND 22.8 0.0022 ND 0.0008 0.004 0.0013 ND ND ND 0.0533 27.1 40.9

10/18/2010 Keystone Labs Reiter Farm ND ND 0.118 ND 0.029 0.0004 ND ND 0.0048 0.343 0.0004 23.1 0.004 0.00007 0.0005 0.0032 0.0012 ND 0.0003 ND 0.0483 21 34

11/16/2010 Keystone Labs Reiter Farm ND ND 0.107 ND 0.032 0.0002 0.0001 ND 0.0088 0.187 0.0006 23.9 0.0035 0.00003 0.0006 0.0033 0.0007 ND ND ND 0.0714 15.2 35.3

12/16/2010 Keystone Labs Reiter Farm ND 0.0022 0.144 0.0004 0.03 0.0108 0.0004 0.004 0.0584 6.02 0.0243 33 0.159 ND 0.0004 0.0238 0.0021 ND 0.0004 ND 0.139 13.8 35.1

1/13/2011 Keystone Labs Reiter Farm ND ND 0.104 ND 0.032 0.0028 0.0003 0.0019 0.0274 1.33 0.0179 22.3 0.0823 0.00003 0.0005 0.0092 0.002 ND 0.0002 ND 0.522 14 36.5

2/16/2011 Keystone Labs Reiter Farm 0.0003 ND 0.136 ND 0.04 0.0044 0.0003 0.0164 0.0194 2.9 0.0131 25.4 0.0684 0.00007 0.0009 0.0188 0.0022 0.00008 ND 0.0034 0.173 19.3 26.2

5/18/2011 Keystone Labs Reiter Farm ND ND 0.119 ND ND 0.0002 0.0001 ND 0.0027 ND 0.0003 19.1 0.0008 0.00014 0.0003 0.005 0.0034 ND ND ND 0.0452 28.7 23.2

8/17/2011 Keystone Labs Reiter Farm ND ND 0.107 ND 0.018 0.0003 ND ND 0.004 ND 0.0002 19.5 0.0022 ND 0.0007 0.0048 0.0016 ND ND ND 0.0511 13.4 33.9

10/17/2011 Keystone Labs Reiter Farm ND ND 0.0877 ND ND ND 0.0004 ND 0.0133 ND 0.0011 20.8 0.0021 ND ND 0.0037 0.0037 ND 0.0008 ND 0.0767

Average 0.0004 0.00139 0.113 ND 0.032 0.0014 0.000267 0.004457 0.0102 1.1248 0.00412 22.76 0.0228 6.33E-05 0.00055 0.007571 0.0017 ND ND 0.004867 0.0937 22.95 62.1

Downgradient Wells

1/15/2010 Keystone Labs South Mine Water 0.0002 ND 0.0899 ND 0.038 0.0001 ND ND ND ND 0.0011 25 0.0029 0.00002 0.0034 0.0037 0.0022 ND ND ND 0.0088 52.6 838

2/18/2010 Keystone Labs Well #1 0.001 0.0014 0.0435 ND 0.059 0.0003 0.0004 ND 0.0672 0.164 ND 60.2 0.0065 0.00003 0.017 0.0045 ND ND 0.0012 ND 0.0281 44.6 141

3/16/2010 Keystone Labs Well #1 0.0002 0.0012 0.0416 ND 0.168 0.0007 ND 0.0045 0.0147 0.103 0.0003 54.7 0.0212 ND 0.0063 0.0062 ND ND ND 0.0049 0.0089 23.7 139

4/15/2010 Keystone Labs Well #1 0.0011 ND 0.0531 ND 0.047 0.0003 ND ND 0.0117 0.583 0.0015 53.6 0.0174 0.00002 0.0075 0.0041 ND ND 0.0014 ND 1.11 19.5 141

5/17/2010 Keystone Labs Well #1 0.0029 ND 0.0554 ND 0.085 0.0004 ND 0.0027 0.0164 0.362 0.0015 56.6 0.0164 0.00006 0.0145 0.0067 0.0002 ND 0.0053 ND 0.0453 31.9 138

6/21/2010 Keystone Labs Well #1 0.0008 0.0007 0.0663 ND 0.047 0.0007 ND 0.0061 0.0099 1.29 0.0008 52.9 0.0578 ND 0.0073 0.0069 0.0002 ND ND 0.0034 0.245 19.3 126

7/16/2010 Keystone Labs Well #1 0.0038 0.001 0.0749 0.0004 0.048 0.0009 0.0003 0.006 0.0106 1.65 0.0013 56.7 0.0795 0.00006 0.0067 0.0078 0.0002 ND ND 0.0007 0.0122 22.7 103

8/18/2010 Keystone Labs Well #1 0.0009 0.0049 0.116 0.0002 0.05 0.0005 ND 0.0038 0.0036 0.702 ND 53.4 0.0633 ND 0.0022 0.0055 ND ND 0.0002 0.0118 0.0035 28 100

9/20/2010 Keystone Labs Well #1 ND 0.0007 0.186 0.0002 0.092 0.0003 ND ND 0.0014 0.741 ND 49.9 0.0513 ND 0.0021 0.0045 ND ND 0.0007 ND 0.0036 25.9 56.9

10/18/2010 Keystone Labs Well #1 0.0041 0.0009 0.262 ND 0.035 0.0005 ND 0.0329 0.001 0.496 ND 30.2 0.0531 0.00002 0.0009 0.0156 ND ND 0.0018 ND 0.0029 17.4 32.2

11/16/2010 Keystone Labs Well #1 ND 0.0012 0.336 ND 0.049 0.0003 ND ND 0.0018 0.638 0.0003 49.8 0.0456 0.00006 0.0005 0.003 ND ND ND ND 0.0053 15.4 21.6

12/16/2010 Keystone Labs Well #1 ND 0.0017 0.37 ND 0.05 0.0002 ND ND 0.0012 0.28 0.0003 47.2 0.0434 ND 0.0002 0.0039 0.0004 ND ND ND 0.009 15.8 14.3

1/13/2011 Keystone Labs Well #1 ND 0.002 0.394 ND 0.062 0.0002 ND ND 0.0005 0.146 ND 46.9 0.0425 ND 0.0001 0.0027 ND ND ND ND 0.0016 15.2 10.5

2/16/2011 Keystone Labs Well #1 0.0005 0.0013 0.502 ND 0.066 0.0003 ND ND 0.0013 0.226 0.0003 48.1 0.0425 0.00009 0.0004 0.0031 ND ND ND 0.0021 0.0036 18.9 14.1

5/18/2011 Keystone Labs Well #1 ND 0.0039 0.532 0.0001 0.039 0.0002 ND ND ND 0.415 ND 46.8 0.0402 ND 0.0001 0.0041 0.0011 ND ND ND ND 17.5 7.8

8/17/2011 Keystone Labs Well #1 0.0005 0.0027 0.511 ND 0.047 0.0004 0.0003 ND 0.0011 0.722 ND 42 0.0407 ND 0.0003 0.005 ND ND ND ND ND 14.4 3

10/17/2011 Keystone Labs Well #1 ND 0.0031 0.041 ND ND ND ND ND ND 0.611 ND 41.5 0.0331 ND ND 0.0035 0.0089 ND ND ND 0.0116

2/18/2010 Keystone Labs Well #2 0.0012 0.001 0.0492 ND 0.058 0.0003 ND ND 0.0941 0.208 0.0004 58.5 0.0111 0.00005 0.0173 0.0049 ND ND ND ND 0.0361 43.4 134

3/16/2010 Keystone Labs Well #2 0.0011 0.0037 0.0412 ND 0.048 0.0024 ND 0.102 0.0111 0.787 0.0007 38.6 0.039 ND 0.0143 0.0632 0.0002 ND 0.0019 0.0049 0.0076 21.2 62.6

4/15/2010 Keystone Labs Well #2 0.0017 ND 0.0491 ND 0.067 0.0007 ND ND 0.0031 0.142 0.0004 41.3 0.0307 ND 0.0133 0.005 ND ND 0.0035 ND 0.004 16 68

5/17/2010 Keystone Labs Well #2 0.0011 0.0015 0.0507 ND 0.088 0.0005 ND 0.0018 0.0006 0.595 0.0013 40.1 0.0733 ND 0.0119 0.0048 ND ND 0.0116 ND 0.0106 16.5 57.8

6/21/2010 Keystone Labs Well #2 0.0011 0.0021 0.0636 ND 0.064 0.0006 ND 0.0078 0.0032 0.819 0.0003 42.1 0.0787 ND 0.0067 0.0074 ND ND 0.0012 ND 0.0088 16.4 39.5

7/16/2010 Keystone Labs Well #2 0.0029 0.0016 0.0673 0.0004 0.069 0.0005 0.0004 0.0026 0.0019 0.373 0.0006 42.5 0.0839 0.00007 0.0057 0.0072 0.0004 ND ND ND 0.005 17.3 37.3

8/18/2010 Keystone Labs Well #2 0.0021 0.0019 0.077 0.0002 0.071 0.0007 ND 0.0157 0.0025 0.522 0.0002 38.1 0.0871 ND 0.0036 0.0112 0.0006 ND 0.0007 0.0109 0.0043 27.3 69

9/20/2010 Keystone Labs Well #2 0.0014 0.0016 0.0971 0.0002 0.134 0.0007 ND 0.017 0.0017 1.49 0.0004 40.4 0.0849 ND 0.0024 0.0128 0.0002 ND 0.0005 ND 0.0083 26.2 34.1

10/18/2010 Keystone Labs Well #2 0.0027 0.0015 0.197 ND 0.08 0.0007 ND 0.0168 0.0029 3.34 0.0005 38.5 0.0961 0.00006 0.0036 0.0119 ND ND 0.0005 ND 0.0091 14.9 10.5

11/16/2010 Keystone Labs Well #2 0.0022 0.0012 0.11 ND 0.06 0.0003 ND ND 0.0014 0.492 ND 41.7 0.0769 0.00003 0.0015 0.0032 ND ND ND ND 0.0052 15.1 25.8

12/16/2010 Keystone Labs Well #2 0.0025 0.0024 0.126 ND 0.069 0.0003 ND ND 0.0018 0.445 0.0003 41.7 0.0844 ND 0.0016 0.0045 0.0004 ND ND ND 0.008 15.2 26.6

1/13/2011 Keystone Labs Well #2 0.0023 0.0018 0.121 ND 0.074 0.0002 ND ND 0.0016 0.271 ND 41.3 0.0833 0.00003 0.0013 0.0033 ND ND ND ND 0.0054 15.6 28.5

2/16/2011 Keystone Labs Well #2 0.0028 ND 0.143 ND 0.084 0.0003 0.00006 ND 0.0013 0.333 0.0003 42.1 0.071 0.00008 0.0014 0.0034 ND ND ND 0.0026 0.0037 16.8 28.4

5/18/2011 Keystone Labs Well #2 0.0018 0.0018 0.157 ND 0.052 0.0003 ND ND 0.0015 0.193 0.0003 39.8 0.0865 ND 0.0006 0.0044 0.0009 ND 0.0005 ND 0.003 23.2 28.1
Groundwater Monitoring Results

BMC Quarry

Date Lab Well Number Antimony Arsenic Barium Beryllium Boron Cobalt Cadmium Chromium Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Vanadium Zinc Chloride Sulfate

mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L

Suggested Test Method 6010 6010 6010 6010 6010 6010 6010 6010 7470 6010 6010 6010 6010 6010 6010

Groundwater Standard 0.006 0.01 2 0.004 1 0.0021 0.005 0.1 1.3 N/A 0.015 N/A 0.3 0.002 0.04 0.1 0.05 0.1 0.002 0.049 2 N/A N/A

Method Detection Limits 0.0002 0.0003 0.0006 0.00005 0.004 0.0001 0.0002 0.0009 0.0004 0.038 0.0002 0.003 0.0019 0.00002 0.0001 0.0001 0.0002 0.0012 0.0002 0.0007 0.0023 8.2 8

Keystone Method Reporting Limits 0.002 0.004 0.004 0.004 0.1 0.004 0.001 0.01 0.004 0.1 0.004 0.1 0.01 0.0002 0.004 0.004 0.004 0.004 0.004 0.01 0.01 25 25

Practical Quantitation Limits - CH 113 0.03 0.5 0.02 0.003 0.04 0.07 0.06 0.4 0.002 0.15 0.75 0.07 0.4 0.08 0.02

8/17/2011 Keystone Labs Well #2 0.003 ND 0.198 ND 0.066 0.0006 ND ND 0.0021 0.747 0.0003 40.9 0.0913 ND 0.0015 0.0059 ND ND ND ND 0.007 13.5 17.7

10/17/2011 Keystone Labs Well #2 0.0014 ND 0.0562 ND ND ND ND ND ND 0.562 ND 41 0.0726 ND ND 0.0037 0.0028 ND ND ND 0.0174

2/18/2010 Keystone Labs Well #3 0.0007 0.001 0.0431 ND 0.036 0.0005 ND ND 0.0041 0.1 ND 32.6 0.0254 0.00011 0.007 0.0072 0.0014 ND ND ND 0.0276 25 101

3/16/2010 Keystone Labs Well #3 0.0007 0.0037 0.0343 ND 0.115 0.0005 ND 0.0044 0.0069 0.147 0.0008 36.5 0.0198 ND 0.0076 0.0066 0.0017 ND ND 0.0052 0.0191 28.1 86.7

4/15/2010 Keystone Labs Well #3 0.002 ND 0.0478 ND 0.046 0.0004 ND ND 0.0092 0.062 0.0005 35.4 0.0186 0.00004 0.0104 0.0089 0.0019 ND 0.0017 ND 0.0477 25.1 88.2

5/17/2010 Keystone Labs Well #3 0.0013 0.0015 0.0476 ND 0.066 0.0004 ND 0.0021 0.0077 0.103 0.001 33.3 0.0229 ND 0.0104 0.0079 0.0017 ND 0.0042 ND 0.0422 21.4 90.8

6/21/2010 Keystone Labs Well #3 0.0018 0.0017 0.0486 ND 0.043 0.0012 ND 0.0361 2.56 0.668 0.0008 35.7 0.0548 ND 0.0937 0.0254 0.0007 ND ND ND 0.134 20.6 92.3

7/16/2010 Keystone Labs Well #3 0.0047 ND 0.0512 0.0006 0.048 0.0012 0.0005 0.0209 0.631 1.02 0.0014 37.2 0.0588 0.00007 0.0319 0.0246 0.0012 ND ND 0.0027 0.0742 23.8 82.6

8/18/2010 Keystone Labs Well #3 0.0008 0.0036 0.153 0.0002 0.065 0.0025 ND 0.0009 0.0033 25.6 0.0004 51.4 0.414 ND 0.0006 0.0088 ND ND ND 0.0033 0.0088 27.2 0.7

9/20/2010 Keystone Labs Well #3 0.0017 0.0006 0.51 0.0003 0.087 0.0008 ND 0.0142 0.033 1.29 0.0003 34.6 0.0965 ND 0.0039 0.0135 ND ND 0.0002 ND 0.0286 29.7 69.3

10/18/2010 Keystone Labs Well #3 ND 0.0026 0.208 ND 0.058 0.0003 ND ND 0.0043 18.5 ND 39.4 0.19 ND 0.0005 0.0034 ND ND 0.0003 ND 0.0136 19.6 0.3

11/16/2010 Keystone Labs Well #3 0.0018 ND 0.0689 ND 0.067 0.0005 ND ND 0.0162 2.05 ND 38.2 0.113 0.00007 0.0031 0.0073 ND ND ND ND 0.0179 20 49.4

12/16/2010 Keystone Labs Well #3 0.0013 0.0017 0.0979 ND 0.051 0.0004 ND ND 0.0113 3.38 0.0004 39.1 0.139 ND 0.0019 0.0075 0.0003 ND ND ND 0.0137 20.2 22.5

1/13/2011 Keystone Labs Well #3 ND ND 0.0752 ND 0.058 0.0003 ND ND 0.0032 1.21 ND 38.3 0.126 0.00005 0.001 0.0055 ND ND ND ND 0.0061 21.1 40

2/16/2011 Keystone Labs Well #3 0.001 ND 0.174 ND 0.064 0.0005 0.00006 ND 0.0075 8.42 0.0003 39 0.142 0.00002 0.001 0.0061 ND ND ND ND 0.0086 22.5 11.6

5/18/2011 Keystone Labs Well #3 ND 0.0015 0.217 ND 0.033 0.0004 ND ND 0.0017 14.2 ND 41.2 0.166 ND 0.0002 0.007 0.0008 ND ND ND 0.0039 20.7 0.7

8/17/2011 Keystone Labs Well #3 0.0013 ND 0.228 ND 0.042 0.0008 ND ND 0.0077 9.76 0.0002 35.4 0.167 ND 0.001 0.0079 ND ND 0.001 ND 0.0131 16.7 0.7

10/17/2011 Keystone Labs Well #3 0.0006 ND 0.0675 ND ND ND ND ND ND 12.1 ND 40.6 0.139 0.00033 ND 0.0078 0.0209 ND 0.0008 ND 0.0207

2/18/2010 Keystone Labs Well #4 0.0018 0.0006 0.128 0.0003 0.045 0.0007 0.0004 ND 0.0081 1.57 0.0032 39 0.0273 0.00016 0.0081 0.0077 ND ND ND ND 0.007 33.2 228

3/23/2010 Keystone Labs Well #4 ND ND 0.0826 ND 0.012 0.0008 ND 0.0031 0.0041 0.086 0.0002 20.7 0.0093 0.00005 0.0024 0.0085 0.0003 ND ND 0.0022 0.0091 16.5 41.8

4/15/2010 Keystone Labs Well #4 0.0006 ND 0.223 ND 0.014 0.0003 ND ND 0.0083 0.207 0.0003 22.1 0.0088 ND 0.0021 0.0041 0.0013 ND 0.0012 ND 0.0113 17.2 28.7

5/17/2010 Keystone Labs Well #4 0.0023 0.003 0.116 ND 0.039 0.0002 ND 0.0023 0.0033 0.173 ND 20.3 0.0092 ND 0.0016 0.0051 0.0011 ND 0.0019 ND 0.0229 17.4 19.3

6/21/2010 Keystone Labs Well #4 0.0002 0.0025 0.138 0.0006 0.011 0.0005 ND 0.012 0.764 ND ND 3.87 0.003 ND 0.023 0.0091 0.0009 ND ND ND 0.0203 17.8 18

7/16/2010 Keystone Labs Well #4 0.0014 0.0009 0.132 0.0004 0.013 0.0004 0.0003 0.0027 0.0248 0.252 0.0006 21.5 0.0135 0.00013 0.0022 0.0058 0.0013 ND ND ND 0.0098 15.7 17.1

8/18/2010 Keystone Labs Well #4 0.0012 0.0017 0.136 0.0002 0.026 0.0004 ND 0.0012 0.016 0.132 0.0002 20.2 0.0076 ND 0.0029 0.0054 0.001 ND 0.0005 0.0096 0.009 24.9 53.4

9/20/2010 Keystone Labs Well #4 0.0018 ND 0.112 0.0002 0.076 0.0007 0.0001 0.0131 0.0047 0.552 ND 25.3 0.0157 ND 0.0053 0.0124 0.0006 ND 0.0004 ND 0.0686 26.6 118

10/18/2010 Keystone Labs Well #4 0.0013 0.0006 0.133 ND 0.046 0.0002 ND ND 0.0054 0.13 ND 26.7 0.0079 ND 0.0048 0.005 0.0011 ND 0.0006 ND 0.0166 18.2 147

11/16/2010 Keystone Labs Well #4 ND ND 0.0484 ND 0.071 0.0003 ND ND 0.0017 0.256 ND 43.2 0.0033 0.00008 0.0073 0.0068 ND ND 0.0008 ND 0.0065 17.9 275

12/16/2010 Keystone Labs Well #4 ND 0.0011 0.0808 ND 0.067 0.0008 ND ND 0.0015 1.35 0.0033 48 0.0257 ND 0.0082 0.0121 0.0002 ND 0.0014 ND 0.0104 23.8 385

1/13/2011 Keystone Labs Well #4 ND ND 0.0397 ND 0.073 0.0005 ND ND 0.0012 0.118 ND 46.9 0.0092 0.00005 0.0076 0.0119 ND ND 0.0011 ND 0.0039 19.6 422

2/16/2011 Keystone Labs Well #4 0.0006 ND 0.0909 ND 0.047 0.0004 0.00006 ND 0.0011 0.066 0.0002 28.1 0.0046 0.00007 0.0023 0.0047 0.0012 ND 0.0008 0.0019 0.0027 15.4 128

5/18/2011 Keystone Labs Well #4 ND ND 0.147 0.00009 0.015 0.0004 ND ND 0.0012 0.385 0.0042 24.6 0.0051 ND 0.0024 0.0061 0.0019 ND ND ND 0.0029 24.8 123

8/17/2011 Keystone Labs Well #4 0.0005 ND 0.0638 ND 0.396 0.0004 ND ND ND ND ND 10.9 0.002 ND 0.0399 0.0052 0.0084 ND 0.0007 ND ND 26.4 197

10/17/2011 Keystone Labs Well #4 0.0009 ND 0.0433 ND 0.53 ND ND ND 0.0025 ND ND 8.31 ND ND 0.0644 0.0046 0.0109 ND 0.0007 ND 0.0117

Average 0.0016 0.00184 0.1395 0.0002869 0.071 0.00054 0.000262 0.013308 0.0751 2.0383 0.00079 38.49 0.0602 7.07E-05 0.0083 0.0080 0.0022 ND 0.0016 0.004729 0.0377 21.94 90.0

Yellow highlights indicate method reporting limits are higher than groundwater standards

Green highlights indicate sample results exceed groundwater standards

Blue highlights indicate estimated results based on Method Detection Limits