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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
2003  2004  2005  2006  20071
Methanol 6,609 6,971 6,630 6,616 4,511
Ammonia 996 1,037 1,055 903 697
Manganese compounds 864 789 633 654 797
Hydrochloric acid 605 539 593 593 200
Acetaldehyde 781 738 494 496 266
Formaldehyde 475 427 392 243 245
Nitrate compounds 226 256 164 160 257
Sulfuric acid 249 164 145 130 106
Methyl ethyl ketone 183 76 – 2 – 2 – 2
Barium compounds 189 138 117 145 302
Phenol 98 103 97 74 92
Zinc compounds 95 103 8388 83 111
Lead and lead compounds 18 19 49 17 25
Chloroform 35 33 41 24 19
Cresol (mixed isomers) 54 58 36 37 1
Chlorine 23 23 19 15 12
Chlorine dioxide 19 21 22 12 5
Mercury and mercury compounds 0.08 0.06 0.07 0.08 0.11
Dioxin and dioxin-like compounds—in grams3 1504 6884 3314 2164 484
Other compounds 111 113 126 122 125
TOTAL U.S. Weyerhaeuser operations 11,630 11,610 10,702 10,324 7,771
  1. 2007 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
2003  2004  2005  2006  20072
Methanol 1,341 1,127 1,159 1,154 441
Formaldehyde 207 154 331 307 191
Phosphorous (total) 428 459 438 372 101
Ammonia – – – – 98
Acetaldehyde 160 233 142 110 56
Manganese 243 274 285 271 50
Total Reduced Sulfur – – – – 36
Hydrochloric acid 63 63 61 47 22
Phenol 18 15 29 24 7.7
Chlorine dioxide 52 61 64 39 2.7
Methylenebis (phenylisocyanate) — MDI 5 4 4 3 2
Polymeric diphenylmethane diisocyanate – – – – 0.2
Lead compounds 2 3 2 2 0.1
Cadmium compounds 0.4 0.6 0.4 0.4 0.2
Phenanthrene – – – – 76.1 kg
Pyrene – – – – 23.32 kg
Fluoranthene – – – – 21.26 kg
Acenaphthylene – – – – 10 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 0.04 0.03 0.03 0.001 grams
Hydrogen sulfide 867 321 245 124 –
Zinc 53 68 62 25 –
Sulfuric acid 21 22 23 21 –
Acrolein 43 104 32 17 –
Ethylene glycol 10 8 7 2 –
Hexavalent chromium compounds 0.8 0.9 1.2 0.6 –
Polycyclic aromatic hydrocarbons 1.5 1.1 0.9 0.8 –
Arsenic compounds 0.6 1.0 0.7 0.6 –
Nitrate ion 0.6 0.6 0.4 0.6 –
Mercury compounds 0.004 – – 0.003 –
Isopropyl alcohol 10 12 – – –
TOTAL Canadian Weyerhaeuser operations 4,1254 3,4814 3,4494 2,9934 1,0084
  1. Dashes indicate a chemical was not required to be reported for these years or there was no quantity to report.
  2. 2007 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 May 11, 2009.