Weyerhaeuser logo

U.S. Toxic Release and Canadian National Pollutant Release Inventories

Every year, we report the release of certain chemicals into the air, water and land under the U.S. Toxic Release Inventory and the Canadian National Pollutant Release Inventory. With rare exceptions, these are lawfully permitted releases that are made in a controlled fashion after steps have been taken to reduce the emissions and mitigate their effects.

Both inventories mandate that we report total emissions without regard to changes in production levels.

FIVE-YEAR U.S. TOXIC RELEASE INVENTORY
Estimated tons released from Weyerhaeuser's U.S. manufacturing facilities
  2005 2006 2007 2008 20091
Methanol 6,630 6,616 4,511 1,786 1696
Ammonia 1,055 903 697 373 356
Manganese compounds 633 654 797 421 135
Hydrochloric acid 593 593 200 127 106
Acetaldehyde 494 496 266 157 125
Formaldehyde 392 243 245 191 65
Nitrate compounds 164 160 257 77 80
Sulfuric acid 145 130 106 58 36
Methyl ethyl ketone –2 –2 –2 –2 –2
Barium compounds 117 145 302 103 78
Phenol 97 74 92 99 91
Zinc compounds 8388 83 111 63 32
Lead and lead compounds 49 17 25 8 4
Chloroform 41 24 19 18 18
Cresol (mixed isomers) 36 37 1 2 2
Chlorine 19 15 12 11 10
Chlorine dioxide 22 12 5 4 3
Mercury and mercury compounds 0.07 0.08 0.11 0.01 0.01
Dioxin and dioxin-like compounds—in grams3 3314 2164 484 124 84
Other compounds 126 122 125 26 25
TOTAL U.S. Weyerhaeuser operations 10,702 10,324 7,771 3,524 2,862
  1. 2009 is the most recent reporting period.
  2. Dashes indicate a chemical was not required to be reported for these years or there was no quantity to report.
  3. Dioxin is presented in grams, while other chemicals are presented in tons. All required dioxin isomers and compounds are reported regardless of their relative toxicity.
  4. Amount shown includes disposal of materials as part of approved remediation activities as well as from normal operational discharges. The dioxin in materials disposed as part of remediation activities was created by discontinued processes.

back to top
FIVE-YEAR CANADIAN NATIONAL POLLUTANT RELEASE INVENTORY
Estimated metric tons released from Weyerhaeuser's Canadian manufacturing facilities1
  2005 2006 2007 2008 20092
Methanol 1,159 1,154 441 257 205
Formaldehyde 331 307 191 84 64
Phosphorous (total) 438 372 101 69 24
Ammonia – – 98 74 91
Acetaldehyde 142 110 56 30 17
Manganese 285 271 50 34 14
Total Reduced Sulfur – – 36 35 39
Hydrochloric acid 61 47 22 22 21
Phenol 29 24 7.7 7.5 -
Chlorine dioxide 64 39 2.7 – -
Methylenebis (phenylisocyanate) — MDI 4 3 2 0.6 .5
Polymeric diphenylmethane diisocyanate – – 0.2 – .1
Lead compounds 2 2 0.1 0.2 117 kg
Cadmium compounds 0.4 0.4 0.2 0.1 12.77 kg
Phenanthrene – – 76.1 kg 34 kg 20 kg
Pyrene – – 23.32 kg 16 kg 13 kg
Fluoranthene – – 21.26 kg 9 kg 5 kg
Acenaphthylene – – 10 kg 14 kg 8.4. kg
Benzo(a)phenanthrene – – 6 kg – -
Fluorene – – 5.50 kg – -
Benzo(a)pyrene – – 5.60 kg – -
Acenaphthene – – 1.9 kg – -
Benzo(a)anthracene – – 1.57 kg – -
Benzo(k)fluoranthene – – 1.75 kg – -
Benzo(b)fluoranthene – – 1.17 kg – -
Indeno(1,2,3-c,d)pyrene – – 0.60 kg – -
Dibenzo(a,h)anthracene – – 0.60 kg – -
3-Methylcholanthrene – – 0.31 kg – -
Benzo(j)fluoranthene – – 0.22 kg – -
Benzo(g,h,i)perylene – – 0.32 kg – -
Perylene – – 0.016 kg – -
Hexachlorobenzene – – 1.8 grams – 1.6 grams
Dioxin and dioxin-like compounds — grams3 0.03 0.03 0.001 grams 0.001 grams 0.001 grams
Hydrogen sulfide 245 124 – – -
Zinc 62 25 – – 1
Sulfuric acid 23 21 – – -
Acrolein 32 17 – – -
Ethylene glycol 7 2 – – -
Hexavalent chromium compounds 1.2 0.6 – – -
Polycyclic aromatic hydrocarbons 0.9 0.8 – – -
Arsenic compounds 0.7 0.6 – – -
Nitrate ion 0.4 0.6 – – -
Mercury compounds – 0.003 – – -
TOTAL Canadian Weyerhaeuser operations 3,4494 2,9934 1,0084 6154 4774
  1. Dashes indicate a chemical was not required to be reported for these years or there was no quantity to report.
  2. 2009 is the most recent reporting period.
  3. Dioxin is presented in grams of toxic equivalence.
  4. The sum of the individual pollutants may not be equal to the total due to rounding.

back to top

Last updated June 10, 2011.