Second report of the National Pollutant Release Inventory working group 2001 to 2002: annex E


Annex E: Percent Coverage at Different Reporting De-minimus

Species List Based on 90% Coverage
(i.e., based on all VOC species listed in Table D-2)
Threshold Species
Count
Sum of Species Emissions %
Species
Emiss-ions
Sum of
Species
Re-activities
%
Species Re-activities
#
Faci-lities
Re-activity
10 tonnes 87 209,927 77% 4.662E-08 80% 184 46.62
7.5 tonnes 91 215,730 79% 4.767E-08 82% 204 47.67
5 tonnes 92 222,586 81% 4.913E-08 84% 235 49.13
2.5 tonnes 97 231,950 8 5.111E-08 87% 311 51.11
1 tonne 98 239,212 87% 5.282E-08 90% 468 52.82
500 kg 100 241,938 8 5.347E-08 91% 634 53.47
100 kg 102 244,173 89% 5.400E-08 92% 1036 54.00
50 kg 102 244,396 89% 5.404E-08 92% 1238 54.04
0 102 244,630 89% 5.409E-08 93% 2374 54.09
               
No Threshold, All Facilities & Species 573 273,987   5.845E-08   4047  

 

Species List based on 80% Coverage (i.e., based on the subset of VOC species in Table D-2 that meet the 80% target for mass, solubility, reactivity and condensability)
Threshold Species
Count
Sum of Species Emissions %
Species
Emiss-ions
Sum of
Species
Re-activities
%
Species Re-activities
#
Faci-lities
Re-activity
10 tonnes 50 193,465 71% 4.434E-08 7 183 44.33992
7.5 tonnes 50 198,293 72% 4.521E-08 77% 202 45.21125
5 tonnes 50 203,972 74% 4.643E-08 79% 232 46.42982
2.5 tonnes 50 211,623 77% 4.808E-08 82% 304 48.08165
1 tonne 51 217,270 79% 4.939E-08 8 461 49.39258
500 kg 52 219,237 80% 4.983E-08 8 626 49.83185
100 kg 53 220,701 81% 5.010E-08 8 1020 50.09556
50 kg 53 220,855 81% 5.013E-08 8 1220 50.12524
0 53 220,995 81% 5.015E-08 8 2332 50.15104
               
No Threshold, All Facilities and Species 573 273,987   5.845E-08   4047  

This analysis was carried out using only point source information (as area sources are not relevant in this context). Although some of the VOC species included in the above analysis are already individually listed on the NPRI, the triggering thresholds for individual reporting have no affect on the analysis, since the VOC speciation requirement would be independent of reporting requirements for individually-listed VOC.

VOC species for a facility were included or excluded in the estimates based on whether they were on the list at 90% and 80% coverage respectively, and whether they met the release de-minimus threshold. The percent coverage calculation includes the national sum of the species mass (or reactivity) for the species listed, divided by the national point source VOC emissions total.

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