C Line Scrubber 610 (MCEM lb/hr) C Line Scrubber 611 (MCEM lb/hr) Average # C line scrubbers operating on test day Hrs in

Nov.

0.043 0.041 0.042 44 720

**C Line Wet Scrubbers 5, 15, 27 were source tested (modified method M315) on Nov.29 - 30, 2011** C Line W et Scrubber 5 (MCEM lb/hr) C Line W et

Scrubber 15 (MCEM lb/hr) C Line W et

Scrubber 27 (MCEM lb/hr) Average # C line scrubbers operating on test day Hrs in

Nov.

0.136 0.303 0.078 0.172 49 720 Analysis of Intalco POM source testing results **C Line Dry Scrubbers 610 and 611 were source tested (M315) on Nov.21 and 22, 2011**lbs emitted in Nov. C Line, Al Tons produced (Nov) Potline lbs

pollutant/ton Al produced ( lb/hr) x (# operating scrubs) x (# Hrs in month ) (lbs pollutant emitted in Nov) / (Tons Al produced in Nov) 1330.56 7061 0.19

**C Line Wet Scrubbers 5, 15, 27 were source tested (modified method M315) on Nov.29 - 30, 2011**

lbs emitted in Nov. C Line, Al Tons produced (Nov) Potline lbs

MCEM/ton Al produced ( lb/hr) x (# operating scrubs) x (# Hrs in month ) (lbs pollutant emitted in Nov) / (Tons Al produced in Nov) 6079.92 7061 0.86


# 1.05 Total (Wet and Dry Scrubbers) potline C MCEM lb/tonMethod section 7.2.1 Acetone Specifications Source Dry Scrubbers We t Scrubbers

Method section 7.2.2 Methy lene chloride Specs. Source Dry Scrubbers We t Scrubbers

Method Section 8.7.6.4.3 Impinger Rinses with solvents, container 3S Source Dry Scrubbers
We t Scrubbers

Dry Scrubber 610 Notes R1 small tear in filter R2 large tear in filter R3 failed post test leak check run not used in results calculations Neither dry

scrubber 611, or any

of the wet scrubber tests had any significant notes. 8.7.6.4.3 Following the water rinse, rinse the back half of the train with acetone to remove the excess water to enhance subsequent organic recovery with m ethy lene chloride and quantitatively recover to a container labeled 3S (solvent) followed by at least three sequential rinsings with aliquots of methy lene chloride. Quantitatively recover to the same container labeled 3S. Record separately the amount of both acetone and methy lene chloride used to the nearest 1 ml or 0.5g. 7.2.1 Acetone. Acetone with blank values < 1 ppm, by weight residue, is required. Acetone blanks may be run prior to field use, and only acetone with low blank values ma y be used. In no case shall a blank value of greater than 1E-06 of the weight of acetone used be subtracted from the sample weight.

7.2.2 Methy lene chloride. Methy lene chloride with a blank value <1.5 ppm, by weight, residue. Methy lene chloride blanks may be run prior to field use, and only methy lene chloride with low blank values may be used. In no case shall a blank value of greater than 1.6E-06 of the weight of methylene chloride used be subtracted from the sample weight.

this could bias high the gaseous and bias low the particulate this could bias high the gaseous and bias low the particulateAdhearance to Specification

No (3mg residue/L) Yes (0m g residue/L)

Adhearance to Specification Yes (0.5mg residue/L) Yes (0m g residue/L)

Adhearance to Specification No, Volum es of each individual solvent not recorded (During analysis, analy tical lab assumed equal portions of solvents were used to perform blank corrections) No, Volum es of each individual solvent not recorded (During analysis, analy tical lab assumed equal portions of solvents were used to perform blank corrections)

run not used in results calculations 8.7.6.4.3 Following the water rinse, rinse the back half of the train with acetone to remove the excess water to enhance subsequent organic recovery with m ethy lene chloride and quantitatively recover to a container labeled 3S (solvent) followed by at least three sequential rinsings with aliquots of methy lene chloride. Quantitatively recover to the same container labeled 3S. Record separately the amount of both acetone and methy lene chloride used to the nearest 1 ml or 0.5g. 7.2.1 Acetone. Acetone with blank values < 1 ppm, by weight residue, is required. Acetone blanks may be run prior to field use, and only acetone with low blank values ma y be used. In no case shall a blank value of greater than 1E-06 of the weight of acetone used be subtracted from the sample weight.

7.2.2 Methy lene chloride. Methy lene chloride with a blank value <1.5 ppm, by weight, residue. Methy lene chloride blanks may be run prior to field use, and only methy lene chloride with low blank values may be used. In no case shall a blank value of greater than 1.6E-06 of the weight of methylene chloride used be subtracted from the

this could bias high the gaseous and bias low the particulate this could bias high the gaseous and bias low the particulate