Δ Vehicle trips | NA | METHODOLOGY/ASSUMPTIONS: |
---|---|---|
Δ VMT | NA |
Using visual observation, there are about 300 average daily trips (ADT). The total project length is 1,320 feet. 27,375 annual VMT = 300 ADT * 365 days per year * (1,320 feet / 5,280 feet per mile) |
Δ Speed | NA | |
Δ Delay | NA | |
Δ SOV | NA | |
Δ CP/VP | NA | |
Δ Transit | NA | |
Δ Walk | NA | |
Δ Bike | NA |
Δ VOC | NA | METHODOLOGY/ASSUMPTIONS: |
---|---|---|
Δ NOx | NA |
Using visual observation, the average traffic speed on the road is 30 mph. The silt content of the road material was estimated as 28.5%. The road carries residential traffic, comprised mostly of cars, SUVs, and trucks; therefore, the mean vehicle weight was estimated 2.5 tons. Data from the Western Regional Climate Center indicates the number of days with at least 0.01 inches of precipitation was 19 in 1998. The particle size multiplier was 0.36, from PM10 guidelines. The following equation was used to calculate the quantity of size specific particulate emissions from the unpaved road. ![]() |
Δ CO | NA | |
Δ PM10 | - 143 kg/day | |
Δ PM2.5 | NA | |
Δ Total | NA |
Project life: 20 yrs | Interest rate: 7% | ||||
CMAQ | NON-CMAQ | TOTAL | METHODOLOGY/ASSUMPTIONS: | ||
---|---|---|---|---|---|
Capital | $174,360 | $22,637 | $197,360 |
Engineering costs were comprised of $16,909 CMAQ and The cost effectiveness calculation provided by the project sponsor uses a 0.071 capital recovery factor. |
|
Adm/oper | $0 | $0 | $0 | ||
Total | $174,360 | $22,637 | $197,360 | ||
Total annualized public cost | $20,817 | ||||
Annual revenues | None | ||||
Net public cost | $197,360 | ||||
Annual private cost | NA | ||||
Total net cost | $197,360 |
Δ Vehicle trips | NA | METHODOLOGY/ASSUMPTIONS: |
---|---|---|
Δ VMT | NA |
The project sponsor supplied ADT using vehicle counts. VMT was based on data obtained from Bannock Planning Organization 1998 Household Survey, COMPASS 1997-98 Valley Origin and Destination Study, and Northern Idaho Corridor Plans. |
Δ Speed | NA | |
Δ Delay | NA | |
Δ SOV | NA | |
Δ CP/VP | NA | |
Δ Transit | NA | |
Δ Walk | NA | |
Δ Bike | NA |
Δ VOC | NA | METHODOLOGY/ASSUMPTIONS: |
---|---|---|
Δ NOx | NA |
Emissions reduction = (0.360 kg/VMT 0.005 kg/VMT) x (1,030 vehicles) x (0.48 miles) = 175.512 kg/day |
Δ CO | NA | |
Δ PM10 | - 175.512 kg/day | |
Δ PM2.5 | NA | |
Δ Total | -175.512 kg/day (0.193 tpd) |
Project life: 20 yrs | Interest rate: 7% | ||||
CMAQ | NON-CMAQ | TOTAL | METHODOLOGY/ASSUMPTIONS: | ||
---|---|---|---|---|---|
Capital | $319,600 | $0 | $319,600 |
Annual emissions reduction = 177 kg/day x 260 days = 46,020 kg/year emissions reduction The statewide average number of days with less than 0.01 inches precipitation is 260 days. 20-year project life was determined by the average life of maintained paved roadway in Idaho. |
|
Adm/oper | $0 | $0 | $0 | ||
Total | $319,600 | $0 | $319,600 | ||
Total annualized public cost | $33,710 | ||||
Annual revenues | None | ||||
Net public cost | $319,600 | ||||
Annual private cost | NA | ||||
Total net cost | $319,600 |
NOTE: Emissions reductions for PM10 reported in the CMAQ database (255.11 kg/day) differ from those calculated and provided by the State (175 kg/day). A cost benefit calculation was provided by the State which assumed emissions benefits 260 days/year for 20 years.
Δ Vehicle trips | NA | METHODOLOGY/ASSUMPTIONS: |
---|---|---|
Δ VMT | 141,845.5 /day |
VMT was based on data obtained from Bannock Planning Organization 1998 Household Survey, COMPASS 1997-98 Valley Origin and Destination Study, and Northern Idaho Corridor Plans. |
Δ Speed | NA | |
Δ Delay | NA | |
Δ SOV | NA | |
Δ CP/VP | NA | |
Δ Transit | NA | |
Δ Walk | NA | |
Δ Bike | NA |
Δ VOC | NA | METHODOLOGY/ASSUMPTIONS: |
---|---|---|
Δ NOx | NA |
Emissions factors were obtained from the EPA's Compilation of Air Pollutant Emissions Factors (AP-42, September, 1998). Environmental staff at the Idaho Transportation Department determined the control efficiency was 0.70.
Total PM10 reduction = 1,113 kg/day + 5,179 kg/day = 6,292 kg/day |
Δ CO | NA | |
Δ PM10 | - 6,292 kg/day | |
Δ PM2.5 | NA | |
Δ Total | - 6,292 kg/day (6.93 tpd) |
Project life: 8 yrs | Interest rate: 7% | ||||
CMAQ | NON-CMAQ | TOTAL | METHODOLOGY/ASSUMPTIONS: | ||
---|---|---|---|---|---|
Capital | $152,889 | $12,111 | $165,000 |
The project life was determined by the average life of similar equipment. Days of Activity per year = 200 days per year for Magnesium Chloride and 90 days per year for the anti-icing chemicals |
|
Adm/oper | $0 | $0 | $0 | ||
Total | $152,889 | $12,111 | $165,000 | ||
Total annualized public cost | $29,865 | ||||
Annual revenues | None | ||||
Net public cost | $165,000 | ||||
Annual private cost | NA | ||||
Total net cost | $165,000 |
NOTE: Costs include purchase of the trucks, but does not account for on-going operating costs. Assumption of 200 days of application per year sounds high, but is presumably accurate for the local area.