2018-08-22_REVISION - M1977493 (7)

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Environmental Protection Plan Appendix T -E Climax Molybdenum Company Geochemical Data Table T -E-3 - McNulty Overburden Storage Facility Reactor Data McNulty Overburden Storage Facility (OSF) Reactor Data was obtained from waste rock reactors set up on the McNulty OSF in 1998. Natural precipitation was sampled as it percolated through the reactors over time. Nine reactors were set up, each composed of a 100 gallon HDPE tank with a conical bottom, containing approximately 1,000 pounds of waste rock. Samples were taken periodically between 1998 and 2000. 3 of 3 July 2011 Sample ID Matrix Lab ID Date Sampled Conductivity @25C umhos/cm Fluoride mg/L pH (lab) units Sulfate mg/L MCla Surface Water L20241-01 9/6/1998 1110 1.8 5.8 490 MCla Surface Water L20941-01 10/28/1998 924 8.5 6.3 470 MCla CL -RPM Surface Water L23469-01 6/8/1999 793 12 5.7 400 MCla Surface Water L25247-01 10/18/1999 7141 11 6.2 340 MCla CL -RPM Surface Water L28398-03 7/26/2000 530 10.6 6.8 240 MClb Surface Water L20941-02 10/28/1998 815 28 5.3 420 MClb CL -RPM Surface Water L23469-02 6/8/1999 758 37 5.4 330 MClb Surface Water L25247-02 10/18/1999 878 11 5.8 450 MClb CL -RPM Surface Water L28398-02 7/26/2000 700 30 5.9 350 MClc Surface Water L20241-02 9/6/1998 872 12 6.5 410 MClc Surface Water L20941-03 10/28/1998 769 19 5.5 390 MC1c CL -RPM Surface Water L23469-03 6/8/1999 560 31 5.3 260 MClc Surface Water L25247-03 10/18/1999 665 28 5.61 320 MClc CL -RPM Surface Water L28398-01 7/26/2000 558 25 61 260 MC2a CL -RPM Surface Water L23469-04 6/8/1999 357 18 5.11 160 MC2a Surface Water L25281-01 10/18/1999 699 33 4.7 360 MC2a CL -RPM Surface Water L28398-06 7/26/2000 408 15.5 4.1 180 MC2b Surface Water L20241-03 9/6/1998 496 5 5.7 190 MC2b Surface Water L20941-04 10/28/1998 503 7 5.5 210 MC2b CL -RPM Surface Water L23469-05 6/8/1999 426 20 5.2 190 MC2b Surface Water L25247-04 10/18/1999 524 21 5.5 240 MC2b CL -RPM Surface Water L28398-05 7/26/2000 420 15.7 51 200 MC2c Surface Water L20241-04 9/6/1998 470 17 5.4 190 MC2c Surface Water L20941-05 10/28/1998 344 10 5.1 150 MC2c CL -RPM Surface Water L23469-06 6/8/1999 346 19 4.4 150 MC2c Surface Water L25247-05 10/18/1999 502 20 5.2 230 MC2c CL -RPM Surface Water L28398-04 7/26/2000 428 16.6 4.6 190 MC3a Surface Water L20241-05 9/6/1998 7370 1420 2.9 6320 MC3a Surface Water L20941-06 10/28/1998 7410 1250 2.7 8030 MC3a CL -RPM Surface Water L23469-07 6/8/1999 7500 1110 2.6 8470 MC3a Surface Water L25247-06 10/18/1999 5140 390 2.7 4990 MC3a CL -RPM Surface Water L28398-09 7/26/2000 6190 650 2.5 7180 MC3b Surface Water L20241-06 9/6/1998 4780 630 3.3 2600 MC3b Surface Water L20941-07 10/28/1998 4540 550 3 3650 MC3b CL -RPM Surface Water L23469-08 6/8/1999 6360 900 3.1 5660 MC3b Surface Water L25247-07 10/18/1999 5340 443 3.2 4780 MC3b CL -RPM Surface Water L28398-08 7/26/2000 5870 440 2.7 5070 MC3c Surface Water L20241-07 9/6/1998 6120 900 3.3 4870 Mc3c Surface Water L20941-08 10/28/1998 5010 530 3 4320 MC3c CL -RPM Surface Water L23469-09 6/8/1999 9800 1380 2.7 9340 MC3c Surface Water L25247-08 10/18/19991 5270 9001 2.91 4490 MC3c CL -RPM Surface Water L28398-07 1 7/26/20001 63701 5601 2.61 6160 McNulty Overburden Storage Facility (OSF) Reactor Data was obtained from waste rock reactors set up on the McNulty OSF in 1998. Natural precipitation was sampled as it percolated through the reactors over time. Nine reactors were set up, each composed of a 100 gallon HDPE tank with a conical bottom, containing approximately 1,000 pounds of waste rock. Samples were taken periodically between 1998 and 2000. 3 of 3 July 2011