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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
2004  2005  2006  2007  20081
Methanol 6,971 6,630 6,616 4,511 1,786
Ammonia 1,037 1,055 903 697 373
Manganese compounds 789 633 654 797 421
Hydrochloric acid 539 593 593 200 127
Acetaldehyde 738 494 496 266 157
Formaldehyde 427 392 243 245 191
Nitrate compounds 256 164 160 257 77
Sulfuric acid 164 145 130 106 58
Methyl ethyl ketone 76 – 2 – 2 – 2 – 2
Barium compounds 138 117 145 302 103
Phenol 103 97 74 92 99
Zinc compounds 103 8388 83 111 63
Lead and lead compounds 19 49 17 25 8
Chloroform 33 41 24 19 18
Cresol (mixed isomers) 58 36 37 1 2
Chlorine 23 19 15 12 11
Chlorine dioxide 21 22 12 5 4
Mercury and mercury compounds 0.06 0.07 0.08 0.11 0.01
Dioxin and dioxin-like compounds—in grams3 6884 3314 2164 484 124
Other compounds 113 126 122 125 26
TOTAL U.S. Weyerhaeuser operations 11,610 10,702 10,324 7,771 3,524
  1. 2008 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 prestented 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 disharges. The dioxin in materials disposed as part of remediation activities was created by discontinued processes.

Five-year Canadian National Pollutant Release Inventory
Estimated metric tons released from Weyerhaeuser's Canadian manufacturing facilities1
2004  2005  2006  2007 20082
Methanol 1,127 1,159 1,154 441 257
Formaldehyde 154 331 307 191 84
Phosphorous (total) 459 438 372 101 69
Ammonia – – – 98 74
Acetaldehyde 233 142 110 56 30
Manganese 274 285 271 50 34
Total Reduced Sulfur – – – 36 35
Hydrochloric acid 63 61 47 22 22
Phenol 15 29 24 7.7 7.5
Chlorine dioxide 61 64 39 2.7 –
Methylenebis (phenylisocyanate) — MDI 4 4 3 2 0.6
Polymeric diphenylmethane diisocyanate – – – 0.2 –
Lead compounds 3 2 2 0.1 0.2
Cadmium compounds 0.6 0.4 0.4 0.2 0.1
Phenanthrene – – – 76.1 kg 34 kg
Pyrene – – – 23.32 kg 16 kg
Fluoranthene – – – 21.26 kg 9 kg
Acenaphthylene – – – 10 kg 14 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 –
Dioxin and dioxin-like compounds — grams3 0.04 0.03 0.03 0.001 grams 0.001 grams
Hydrogen sulfide 321 245 124 – –
Zinc 68 62 25 – –
Sulfuric acid 22 23 21 – –
Acrolein 104 32 17 – –
Ethylene glycol 8 7 2 – –
Hexavalent chromium compounds 0.9 1.2 0.6 – –
Polycyclic aromatic hydrocarbons 1.1 0.9 0.8 – –
Arsenic compounds 1.0 0.7 0.6 – –
Nitrate ion 0.6 0.4 0.6 – –
Mercury compounds – – 0.003 – –
Isopropyl alcohol 12 – – – –
TOTAL Canadian Weyerhaeuser operations 3,4814 3,4494 2,9934 1,0084 6154
  1. Dashes indicate a chemical was not required to be reported for these years or there was no quantity to report.
  2. 2008 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.

Last updated June 17, 2010.