From: Rob Bamford <rbamford@ndep.nv.gov>

To: Chuck French/RTP/USEPA/US@EPA

Date: 02/02/2010 04:32 P M

Subject: Data updata and Marigold

Hello Chuck,

I attached 2 files: a data comparison update table and the summary sheets from the 2009 Marigold test. Let us know if you need anything else.

‐ Rob

Rob Bamford Phone: 775

‐ 687

‐ 9330 Supervisor, Nevada Mercury Control Cell: 775

‐ 315

‐ 3655 Program Fax: 775

‐ 687

‐ 6396 Nevada Division of Environmental E

‐ mail: rbamford@ndep.nv.gov Protection Bureau of Air Quality PlanningFacility Date Unit Code avg lb/hr Operating hr/ y r source Notes Je's Comments
Bald Mountain Aug-08 Carbon Kiln 9.6E-05 1,690 dep lb/hr not agree with AER Bald Mountain Aug-08 Carbon Kiln 7.8E-05 1,690 rti confirmed lb/hr in AER Bald Mountain Oct-07 Electrowinning 6.1E-03 756 dep op hr not agree with AER Bald Mountain Nov-07 Electrowinning 6.1E-03 7,563 rti confirmed op hrs in AER Coeur Rochester Dec-07 Retort 6.3E-04 7,059 rti need re-stated results for 3 runs Coeur Rochester Dec-07 Retort 5.3E-04 611 dep DEP used re-stated results for 3 runs Coeur Rochester Oct-08 Retort 1.9E-04 3,792 dep lb/hr not agree with AER Coeur Rochester Oct-08 Retort 1.5E-04 3,792 rti confirmed lb/hr in AER Florida Canyon Jul-08 Retort 2.0E-06 116 rti confirmed op hrs in AER Florida Canyon Jul-08 Retort 2.0E-06 992 dep op hr not agree with AER Florida Canyon Jul-08 Retort 1.6E-05 992 rti confirmed op hrs in AER Florida Canyon Jul-08 Retort 1.6E-05 116 dep op hr not agree with AER Gold Quarry Jul-08 Carbon Kiln 6.1E-04 7,527 rti neither agree with AER Gold Quarry Jul-08 Carbon Kiln 1.3E-03 7,527 dep neither agree with AER Round Mountain Nov-08 Carbon Kiln 3.6E-05 7,848 dep 2008 Rnd Mtn not in AER Round Mountain Nov-08 Carbon Kiln 1.2E-05 8,760 rti 2008 Rnd Mtn not in AER Round Mountain Nov-08 Melt Furnace 8.9E-05 556 dep 2008 Rnd Mtn not in AER Round Mountain Nov-08 Melt Furnace 8.9E-05 618 rti 2008 Rnd Mtn not in AER Twin Creeks Aug-07 Melt Furnace 4.7E-03 409 rti confirmed op hrs in AER Twin Creeks Aug-07 Melt Furnace 4.7E-03 1,170 dep op hr not agree with AER

Facility Date Unit Code avg lb/hr Operating hr/yr source Notes

Cortez Oct-08 Preg Tank 3.2E-04 8,760 rti confirmed in AER found in MEMS and 110.3% isokinetic at run #1 Denton-Rawhide Dec-07 Retort 4.75E-07 2,513 rti confirmed in AER found in MEMS, correct OP Denton-Rawhide Dec-08 Retort 4.87E-07 472 rti confirmed in AER found in MEMS, correct OP Gold Quarry Oct-07 Electrowinning 3.6E-04 7,671 rti confirmed in AER found in MEMS, correct OP Gold Quarry Oct-07 Preg Tank 2.0E-03 8,760 rti confirmed in AER Not found in MEMS Gold Quarry Sep-08 Retort 5.2E-04 3,072 rti confirmed in AER Invalid due to no CFC Goldstrike Jul-07 Electrowinning 2.7E-03 7,053 rti confirmed in AER Not found in MEMS Goldstrike Apr-08 Electrowinning 4.2E-03 7,202 rti confirmed in AER Not found in MEMS Goldstrike Apr-08 Melt Furnace/EW 2.5E-02 478 rti confirmed in AER Found in MEMS, but invalid test Round Mountain Jun-07 Electrowinning 2.0E-04 8,760 rti not in AER found in MEMS, correct OP Ruby Hill May-07 Carbon Kiln 1.3E-03 3,976 rti confirmed in AER found in MEMS, correct OP Ruby Hill May-07 Electrowinning 2.8E-03 8,784 rti confirmed in AER found in MEMS, correct OP Ruby Hill May-07 Melt Furnace 4.3E-02 96 rti confirmed in AER found in MEMS, correct OP Ruby Hill May-07 Retort 1.0E-07 891 rti confirmed in AER found in MEMS, correct OP Twin Creeks Jun-07 Autoclave 4.3E-02 7,914 rti not in AER Twin Creeks Jun-07 Autoclave 5.3E-02 7,914 rti not in AER Twin Creeks Jun-07 Autoclave 6.6E-02 7,914 rti not in AER Twin Creeks Jun-07 Autoclave 6.6E-02 7,914 rti not in AER Twin Creeks Jun-07 Autoclave 3.3E-02 7,644 rti not in AER Twin Creeks Jun-07 Autoclave 2.5E-02 7,644 rti not in AER Twin Creeks Aug-07 Carbon Kiln 1.4E-03 7,551 rti not in AER Twin Creeks Jun-07 Melt Furnace 5.5E-02 409 rti not in AER Twin Creeks Jun-07 Melt Furnace 1.0E-01 409 rti not in AER Twin Creeks Jun-07 Melt Furnace 4.3E-02 422 rti not in AER Twin Creeks Jun-07 Melt Furnace 5.2E-02 422 rti not in AER Twin Creeks Jun-07 Retort 7.7E-05 2,642 rti not in AER Twin Creeks Jun-07 Retort 5.8E-05 2,899 rti not in AER Twin Creeks Jun-07 Retort 2.1E-05 3,253 rti not in AER Twin Creeks Jun-07 Retort 2.7E-05 3,553 rti not in AER Twin Creeks Jul-07 Roaster 2.3E-02 6,990 rti not in AER Twin Creeks Jul-07 Roaster 7.1E-02 6,990 rti not in AER Twin Creeks Jul-07 Roaster 1.9E-02 7,180 rti not in AER Twin Creeks Jul-07 Roaster 1.8E-01 7,180 rti not in AER Correct value: 831 (hrs/yr) DATA FOR RTI AND DEP DIFFERENT

DATA IN RTI DATABASE AND NOT IN DEP'S

DATA IN DEP'S DATABASE AND NOT IN RTI'S NDEP Error

NDEP Error

RTI needs to use our data

Run #4 not included in NDEP

Correct value: 116 (hrs/yr)

Correct value: 992 (hrs/yr)

RTI: 6.17E-3, NDEP: 1.3E-3, Correct value: 1.03E-3 (lb/hr)
Correct value: 1.2E-5 (lb/hr), 8592 (hrs/yr)

Correct value: 617 (hrs/yr)Facility Date Unit Code avg lb/hr Operating hr/yr source Notes Goldstrike Mar-07 RoasterPre-Heater 1.5E-02 7,854 dep need 3 run data Goldstrike Mar-07 RoasterPre-Heater 9.9E-04 7,940 dep need 3 run data Goldstrike Oct-07 RoasterPre-Heater 1.7E-03 7,940 dep need 3 run data Goldstrike Oct-07 RoasterPre-Heater 1.8E-03 7,940 dep need 3 run data Goldstrike Oct-07 RoasterPre-Heater 1.1E-03 7,854 dep need 3 run data Goldstrike Oct-07 RoasterPre-Heater 1.5E-03 7,854 dep need 3 run data

Midas Jul-08 Retort 2.9E-03 2,957 dep need 3 run data (I get the same avg if Run 1 was invalidated - it appears to be an outlier) Twin Creeks Aug-08 Carbon Kiln 1.9E-01 7,542 dep need 3 run data