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 Wet 

Scrubber 5 

(MCEM lb/hr)

C Line Wet 

Scrubber 15 

(MCEM lb/hr)

C Line Wet 

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

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/ton
Method section 7.2.1 Acetone Specifications Source

Dry Scrubbers

Wet Scrubbers

Method section 7.2.2 Methylene chloride Specs. Source

Dry Scrubbers

Wet Scrubbers

Method Section 8.7.6.4.3

Impinger Rinses with solvents, 

container 3S Source

Dry Scrubbers

Wet 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 subsequ

chloride and quantitatively recover to a container labeled 3S (solvent) followed by at least three sequential rinsings with aliquots 

recover to the same container labeled 3S. Record separately the amount of both acetone and methylene chloride used to the ne

7.2.1 Acetone. Acetone with blank values < 1 ppm, by weight residue, is required. Acetone blanks may be run prior to field use, 

may 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 

7.2.2 Methylene chloride. Methylene chloride with a blank value <1.5 ppm, by weight, residue. Methylene chloride blanks may be 

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 ch

sample weight.

this could bias high the gaseous and bias low the particulate

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

No (3mg residue/L)

Yes (0mg residue/L)

Adhearance to Specification

Yes (0.5mg residue/L)

Yes (0mg residue/L)

Adhearance to Specification

No, Volumes of each individual solvent not recorded (During analysis, analytical lab 

assumed equal portions of solvents were used to perform blank corrections)

No, Volumes of each individual solvent not recorded (During analysis, analytical lab 

assumed equal portions of solvents were used to perform blank corrections)

 in results calculations

etone to remove the excess water to enhance subsequent organic recovery with methylene 

wed by at least three sequential rinsings with aliquots of methylene chloride. Quantitatively

of both acetone and methylene chloride used to the nearest 1 ml or 0.5g.

equired. Acetone blanks may be run prior to field use, and only acetone with low blank values 

weight of acetone used be subtracted from the sample weight.

 by weight, residue. Methylene chloride blanks may be run prior to field use, and only methylene 

e of greater than 1.6E-06 of the weight of methylene chloride used be subtracted from the 

as high the gaseous and bias low the particulate

as high the gaseous and bias low the particulate