Environmental Screening Matrix
This table presents a preliminary environmental evaluation summary, highlighting whether
the proposed alternatives address project needs and environmental considerations being
evaluated as part of the study.
To view the table full screen, click here.
1a | 1b | 2a | 2b | 3a | 3b | NB | |
---|---|---|---|---|---|---|---|
Compressed Diamond I-29 Under | Compressed Diamond I-29 Over | SPI I-29 Under | SPI I-29 Over | DDI I-29 Under | DDI I-29 Over | No Build | |
Project Needs (Criteria) | |||||||
Traffic Operations (Meets LOS “C” (urban) and LOS “B” (rural) | Need is met | Need is met | Need is met | Need is met | Need is met | Need is met | Need is not met |
Road Surface Conditions (PCI is at acceptable level) | Need is met | Need is met | Need is met | Need is met | Need is met | Need is met | Need is not met |
Safety (Reduce Crash Rate to be below Critical Crash Rate) | Need is met | Need is met | Need is met | Need is met | Need is met | Need is met | Need is not met |
Meets Current Design Standards (Intersection and stopping Distance, Shoulder Width, vertical curve geometric issues, sloes, and ramp junction taper rates) | Need is met | Need is met | Need is met | Need is met | Need is met | Need is met | Need is not met |
Environmental Considerations | |||||||
Land use and zoning | Compatible ROW acquisition (0.7 acre) | Compatible ROW acquisition (0.4 acre) | Compatible ROW acquisition (0.4 acre) | Compatible ROW acquisition (0.4 acre) | Compatible ROW acquisition (1.5 acre) | Compatible ROW acquisition (1.5 acre) | Compatible No ROW acquisition |
WAPA Utility (no less than 32' ground clearance) Existing minimum clearance is 52.5' | ~51.5' | ~40' | ~52.5' | ~37.25' | ~52.5 | ~37.25' | No Impact |
Airport - Runway Proection Zone (RPZ) | No further encroachment of existing RPZ | No further encroachment of existing RPZ | No further encroachment of existing RPZ | No further encroachment of existing RPZ | No further encroachment of existing RPZ | No further encroachment of existing RPZ | No Impact |
Wetlands (Desktop Analysis) | 4.58-4.74 acres (depending on offset) | 5.73 | 2.85 | 4.43 | 5.84 | 6.96 | 0 |
Surface Water Quality | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact |
Regulated Materials | Minor Risk | Minor Risk | Minor Risk | Minor Risk | Minor Risk | Minor Risk | No Risk |
FEMA Floodway | 0.08 acre | 0.12 acre | 0.06 acre | 0.09 acre | 0.1 acre | 0.14 acre | 0 acre |
FEMA Floodzone AE | 3.46-3.49 acre (depending on offset) | 4.65 acre | 1.83 acre | 3.07 acre | 4.67 acre | 5.48 acre | 0 acre |
Wild and Scenic Rivers | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
Threatened and Endangered Species | Anticipated Determinations: Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
Anticipated Determinations: Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
Anticipated Determinations: Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
Anticipated Determinations: Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
Anticipated Determinations: Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
Anticipated Determinations: Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
No Impact |
Archeological Resources and Historic Structures | Anticipated Determinations: Northern Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
Anticipated Determinations: Northern Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
Anticipated Determinations: Northern Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
Anticipated Determinations: Northern Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
Anticipated Determinations: Northern Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
Anticipated Determinations: Northern Northern Long-eared Bat (Not Likely to Adversely Affect), Red Knot (No Affect), Western Prairie Fringe Orchid (No Affect), Monarch Butterfly (Candidate Species) - (Not Likely to Adversely Affect) |
No Impact |
Air Quality | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact, but greater than build alternatives |
Prime and Important Farmland | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact | No Significant Impact | No Impact |
Noise | Residential receptors are located south of 273rd Street and west of Exit 71. Noise analysis would have to be performed to understand if impacted. | Residential receptors are located south of 273rd Street and west of Exit 71. Noise analysis would have to be performed to understand if impacted. | Residential receptors are located south of 273rd Street and west of Exit 71. Noise analysis would have to be performed to understand if impacted. | Residential receptors are located south of 273rd Street and west of Exit 71. Noise analysis would have to be performed to understand if impacted. | Residential receptors are located south of 273rd Street and west of Exit 71. Noise analysis would have to be performed to understand if impacted. | Residential receptors are located south of 273rd Street and west of Exit 71. Noise analysis would have to be performed to understand if impacted. | No Impact |
Environmental Justice | No Impact | No Impact | No Impact | No Impact | No Impact | No Impact | No Impact |
Parks & Recreational facilities | No Impact | No Impact | No Impact | No Impact | No Impact | No Impact | No Impact |
Section 4(f) or 6(f) | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
Visual | No Impact | No Impact | No Impact | No Impact | No Impact | No Impact | No Impact |
Other Public Controversy* | Best Maintanence of Traffic Scenariot | Poor Maintanence of Traffic Scenario | Moderately high Maintanence of Traffic Scenario | Worst Maintanence of Traffic Scenario | Best Maintanence of Traffic Scenario | Poor Maintanence of Traffic Scenario | No Impact |
* Business impacts would be similar for all alternatives and would be dependent on Kenworth - Ironworks connection which is independent of the Interchange alternative selected.