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Project No.: 0317.02.005.520 Page 1 of 2

Project Name: TRI2013 CBI?

Yes

No

TELEPHONE CALL RECORD

Incoming

Outgoing

Date: 04/14/15 Time: 11:39 am

pm

Company Name: Cabot Corporation Canal Plant ERG Staff Name:

Kara Edquist

Contact Name: Scott Longon Contact Phone Number: (337) 838 - 2233

General Subject: 2013 TRI PAC Discharges for Cabot Corporation’s Canal Plant, Franklin, LA.

TOPICS DISCUSSED AND ACTION TAKEN

On April 14th 2015 at 11:39am I called Mr. Longon. I asked him if he could confirm the 240 pound PAC 

discharge and he did. I asked if he would mind sending over the data to clarify how the load is calculated and he 

stated the spreadsheet may not be the easiest to interpret, so he explained the process to me over the phone:

Overall, the facility’s estimation of PAC is comprised of mainly oil and grease and small percentage of solids. 

The source of the PACs in the wastewater is from the feedstock oil (oil and grease), which contains 25,000ppm 

PAH. The facility speciates out Anthracene and Phenanthrene which are not PACs to get the overall pounds of 

PACs for TRI.

Data points Mr. Longon mentioned:

 435,000,000 gallons of wastewater discharged for 2013.

 2.67 mg/L – concentration of oil and grease used in calculations. This is the mid-point of a non-detect, 

because all of the facility’s samples were below detection limit.

 9,684.25 lb – amount of oil and grease for the year in pounds

 25,000ppm – concentration of PAH in the feedstock

 242 pounds – amount of PAH discharged

 1.8 pounds – amount of Anthracene and Phenanthrene (each) discharged, speciated out

 1 pound – amount of solids discharged, known from “process knowledge”

 239.5 pounds – amount of PAC discharged

The facility performs the following calculations to estimated PAC:

1. Convert gallons of wastewater to pounds 

435,000,000 gals ∗ 8.34

lb

gal = 3,627,900,000 lb

2. Use this value to find the total pounds of oil and grease, using the estimated mid-point concentration 

3,627,900,000 lb water ∗

2.67 lb oil and grease

1,000,000 lb water

= 9686.49 lb oil and grease

*9686.49 lb of oil and grease is slightly off, most likely due to rounding to clean up phone conversation.
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3. The amount of oil and grease is then multiplied by the known concentration of PAH in the feedstock oil 

to get the pounds of PAH discharged

9,684.25 lb oil and grease ∗

25,000 lb PAH

1,000,000 lb oil and grease

= 242.1 pounds PAH

4. The facility then subtracts Anthracene and Phenanthrene from the total amount of PAH to get just PACs 

242.1 pounds − 1.8 pounds Anthracene − 1.8 pounds Phenanthrene = 238.5 pounds PAC

5. The facility then added in the amount of solids, known from process knowledge

238.5 pounds PAC + 1 pound of solids

= 239.5 pounds of total PAC discharged from Cabot Canal Plant

On April 17th 2015 at 9:27 am, I called Mr. Longon and left a message asking about the increased flow 

from TRI 2009 (about 2,300,000,000 lb) to TRI 2013 (about 3,600,000,000 lb). 

On April 17th 2015 at 11:40 am, Mr. Longon returned my call and left a message asking for me to call 

him back.

On April 22nd 2015 at 10:19 am, I returned Mr. Longon’s call and asked about the increased in flow. He 

commented that there had been an increase in production between the years. 2009 was recession year 

and production was down.