Carbon Monoxide Categorical Hot-Spot Finding Form

Complete this form to determine if your project falls within acceptable range of modeled parameters to rely on the CO categorical hot-spot finding. Section 4 in EPA's, "Guideline for Modeling Carbon Monoxide from Roadway Intersections" should be followed for selecting the highest volume and worst level of service intersection(s) for analysis.

Urban Intersection ^{(?The area where two or more roadways join or cross.)}

(Enter project information below)

Project Description ^{(?Optional: Description of project including title, project number, etc.)}

Analysis Year ^{(?The year when peak emissions are expected from the project when considered with background.)}:	(≥ 2017)
Angle of cross streets for intersection (degrees) ^{(?The angle of the 2 cross streets that make up the intersection.)}:	90
Maximum grade for intersection (%) ^{(?The maximum grade along the approach, as measured from the stop line to a point 100 feet upstream of the stop line along a line parallel to the direction of travel.)}:	(≤ 2)
Maximum grade (%) on cross street for intersection ^{(?The maximum approach grade on the cross street.)}:	0
Number of through lanes ^{(?The number of lanes approaching the intersection available for vehicles traveling through the intersection without turning.)}:
Approach 1:	(≤ 4)
Approach 2:	(≤ 4)
Approach 3:	(≤ 4)
Approach 4:	(≤ 4)
Number of left turn lanes ^{(?The number of lanes approaching the intersection that are designated for use only by vehicles making left turns.)}:
Approach 1:	(≤ 2)
Approach 2:	(≤ 2)
Approach 3:	(≤ 2)
Approach 4:	(≤ 2)
Lane width (feet) ^{(?The lateral distance between stripes for a single lane.)}:	12
Median width (feet) ^{(?The width of the area in the middle of a roadway separating opposing traffic flows.)}:	0
Peak hour average approach speed (mph) ^{(?The average speed approaching the intersection during the peak hour.)}:
Approach 1:	(≥ 25)
Approach 2:	(≥ 25)
Approach 3:	(≥ 25)
Approach 4:	(≥ 25)
Peak hour approach volume (vehicles per hour) ^{(?The volume approaching the intersection during the peak hour.)}:
Approach 1:	(≤ 2640)
Approach 2:	(≤ 2640)
Approach 3:	(≤ 2640)
Approach 4:	(≤ 2640)
Peak Level of Service ^{(?During the peak hour, the letter representing quality of service measured on an A-F scale, with LOS A representing the best operating conditions from the traveler's perspective and LOS F the worst.)}:	(A-E)
Ambient temperature (Fahrenheit) ^{(?As determined based on Section 4.7.1 of EPA's, "Guideline for Modeling CO from Roadway Intersections".)}:	(≥ -10)
Heavy-duty trucks (%) ^{(?The percentage of heavy-duty trucks using the intersection during the peak hour.)}:	(≥ 5)
1-hour average background CO concentrations (ppm) ^{(?Concentration in the project area due to other local sources, determined in most cases from local monitoring data as described in Section 4.7.3 of EPA's "Guideline for Modeling CO from Roadway Intersections".)}:	(≤ 32.6)
8-hour background CO concentrations (ppm) ^{(?Concentration in the project area due to other local sources, determined in most cases from local monitoring data as described in Section 4.7.3 of EPA's "Guideline for Modeling CO from Roadway Intersections".)}:	(≤ 7.3)
Persistence Factor ^{(?The factor used to calculate 8-hour concentration estimates from 1-hour concentration estimates, as determined by following Section 4.7.2 of EPA's "Guideline for Modeling CO from Roadway Intersections".)}:	(≤ 0.7)

Carbon Monoxide Categorical Hot-Spot Finding Form

Urban Intersection (?The area where two or more roadways join or cross.)

Urban Intersection ^{(?The area where two or more roadways join or cross.)}