Table 8 - American and Canadian Sources of HCB Releases

Sector / Source

U.S. Emissions (kg/year)*

(1)

Ontario (kg)(2)

Pesticide use / application

97.98

9.59

Chlorine production

78.93

0.00

Publicly owned treatment works (POTWs) / sewage

treatment plants

23.59

0.652

Waste incineration (refuse systems)

22.23

1.82

Tires and inner tubes

13.61

-

Miscellaneous metal parts & products (surface coating)

12.70

-

Armed forces (used in signal flares)

10.89

-

Hydrochloric acid production

6.35

0

Pesticide and agricultural chemicals

3.18

0

Use of HCB contaminated ferric / ferrous chloride

-

1.403

Cement kilns / manufacture (burning waste)

2.27

0.04

Open trash burning (barrel burning)

-

0.68

Carbon and graphite products

3.18

-

Wood preservation facilities / use of preservative

-

0.06

Iron sintering

-

0.47

Iron & steel (electric arc furnaces)

-

<1 (3)

Total Estimated HCB Releases 4

272.16

15.34

*

U.S. data (originally in pounds) was converted to kilograms.

Sources:

(1)

U.S. EPA, National Toxics Inventory (NTI), 1996

(2)

Benazon Environmental Inc., Hexachlorobenzene Sources, Regulations and Programs for the Ontario Great Lakes Basin 1988, 1998, and 2000, Draft Report (No. 1), Prepared for Toxics Prevention Division, Environmental Protection Service - Ontario Region, Environment Canada, July 13, 2000, p. 10.

(3)

Data provided by e-mail communication from Darryl Hogg, Environment Canada, April 17, 2001.

Notes:

1

2

3

4

Percentage of total HCB air emissions in U.S.

Quantity includes air, water and land application of sewage sludge.

Maximum quantity and may already be counted under the sewage treatment plant sector.

Quantities may not add up to match total due to rounding.