Appendix I 

Sample Calculations for Nonpoint Sources 

 
 
APPENDIX I- Sample calculations for several NonPoint Sources are below: 

2007 Prescribed Burning 

AMS: 2810014000 

Suffolk County, NY (FIPS: 36103) 

PM2.5 Flaming Fuel Emission Calculations: 

 ((Acres burned)1 × (Fuel Loading Factor (tons/acre burned))2 × (PM2.5 

Flaming Fuel Emission Factor (lb/ton)))2 × 0.75 = PM2.5 Flaming Fuel 

Emissions (lbs/yr) 

((77.5 acres burned) × (8.2 tons/acre burned) × (24.1 lb/ton)) × 0.75 

= 11,490 lbs/yr 

PM2.5 Smoldering Fuel Emission Calculations: 

((Acres burned)1

 × (Fuel Loading Factor (tons/acre burned))2 × (PM2.5 

Emission Factor (lb/ton)))3 × 0.25 = PM2.5 Smoldering Fuel Emissions 

(lbs/yr) 

((77.5 acres burned) × (8.2 tons/acre burned) × (24.1 lb/ton)) × 0.25 

 = 3,830 lbs/yr 

PM2.5 Annual Emissions = PM2.5 Flaming Fuel Emissions + PM2.5 

Smoldering Fuel Emissions 

= 11,490 lbs/yr + 3,830 lbs/yr 

= 15,320 lbs/yr 

= 7.66 tons/yr 

Notes:

1. 2007 data was compiled by the New York State Department of Environmental 

Conservation’s Division of Lands And Forests. 

2. Fuel Loading factor and Emission Factors: EPA’s Documentation For The 

1996 Base Year National Toxics Inventory for Area Sources dated May 31, 2001 

(Appendix A; Pages A-31 and A-32). 

3. PM2.5 Emission Factor: The PM2.5 emission factor (24.1 lbs/ton) was 

forwarded to the Department’s Division of Air Resources in an email from Randy 

Strait of E. H. Pechan & Associates, Inc. on 08/02/2004. 

 
2007 Residential Heating (Oil) 

AMS: 2104004000 & 2104011000 

Nassau, NY (FIPS: 36059) 

1. County: Nassau 

2. Allocation of Fuel to County Level 

a. Raw Data 

 i number of households heated w/oil: 247,586 (2000 Census) 

 ii heating degree days (2007 calendar year): 5,252 days (NOAA) 

iii statewide fuel usage for sector: 

 distillate oil: 1,338,120 x 103 gallons 

 kerosene: 52,164 x 103 gallons 

 

b. Weighted Average Allocation 

 

 For each county, the product of census data times heating degree days 

was determined. For Nassau County: 

 = (247,586 homes)(5,252 heating degree days) 

 = 1,300,321,672 homes-heating degree days 

The statewide sum: 12,925,564,782 homes-heating degree days 

The Nassau County allocation factor (AF) for residential fuel oil then is 

calculated by dividing the county-specific value by the statewide value: 

 AF = (1,209,210,024)/(11,988,704,610) 

 AF = 0.1006

The residential fuel oil allocation for Nassau County is then determined by 

multiplying the statewide fuel usage for the sector by AF: 

 distillate oil: (0.1006)(1,338,120 x 103

 gallons) 

 = 134,615 x 103

 gallons

 kerosene: (0.1006)(52,164 x 103

 gallons) 

 

 = 5,248 x 103

 gallons

 

3. Emission Factors 

a. sulfur content of fuel oil: 
 distillate oil: 0.21 percent 

 kerosene: 0.053 percent 

NOTE: Sulfur content in fuel oil as reported on 2007 Emission 

Statements submitted by facilities in Rockland and Nassau 

Counties. 

b. Area Source Classifications: 

 distillate oil: 2104004000 

 kerosene: 2104011000 

 

c. Emission Factors (EF) 

Sources: AP-42, FIRE for commercial/institutional facilities using 

distillate or kerosene. 

Pollutant EF (lb/103

 gallons)

NOx 24 

CO 5 

PM10 2.38 

SO2 142[S] where [S] is sulfur content (%) 

4. Emissions Calculations – Residential Heating Oil – Nassau County 

a. Annual 

Emissions calculated by multiplying fuel allocation by emission factors. 

Sample calculations presented below: 

1. Distillate Oil

NOx (134,615 x 103

 gallons)(24 lb/103 gallons) = 3,230,800 lb = 1615.4 

tons

CO (134,615 x 103 gallons)(5 lb/103 gallons) = 673,100 lb = 

336.6 tons

PM10 (134,615 x 103 gallons)(2.38 lb/103 gallons) = 320,400 lb = 160.2 

tons 

SO2 (134,615 x 103

 gallons)(142 lb/103 gallons)(0.21) = 4,014,200 lb = 

2007.1 tons
2. Kerosene

NOx (5,248 x 103

 gallons)(24 lb/103 gallons) = 126,000 lb = 63.0 tons

CO (5,248 x 103

 gallons)(5 lb/103 gallons) = 26,240 lb = 13.1 tons

PM10 (5,248 x 103

 gallons)(2.38 lb/103 gallons) = 12,490 lb = 6.2 tons

SO2 (5,248 x 103 gallons)(142 lb/103 gallons)(0.053) = 39,500 lb = 19.8 

tons