LAUREL
VALLEY
TRANSPORTATION IMPROVEMENT PROJECT
Potential Impact Analysis
Concept 1
Concept 2
Concept 3
Concept 4
+ Least potential impact to agricultural land
+ Least NWI* wetland impacts
+ Least potential impact to NHD** streams
+ Smallest flood plain impact
+ Least potential forestland impact
+ Smallest flood plain impact
+ Shortest length of new (offline) alignment
+ Smallest estimated overall footprint
(disturbance area)
+ Least potential impact to High Quality
Streams
+ Lower construction cost (similar to
Concept 1)
+ Lower construction cost
+ Greatest potential use of previously surface
mined areas
- Most impact to high quality streams
- Only concept to impact a community
facility
- Greatest potential for property owner
displacements
- Highest estimated Right-of-Way cost
- Requires relocation of a Sanitary Pump
Station (Concepts 1 and 3)
- Greatest potential for utility impacts
- Highest potential utility relocation cost
- Higher cost to maintain traffic during
construction (similar to Concept 3)
+ Least potential for residential and
commercial displacements
+ Lowest estimated Right-of-Way cost
+ Least potential for utility impacts
+ Lowest estimated utility relocation cost
+ Lower cost to maintain traffic during
construction (similar to Concept 4)
- Greatest potential for oil & gas well impacts
- Greatest potential for agricultural impacts
- Greatest potential impact to NHD** streams
- Greatest impact to NWI* wetlands
- Second highest impact to High Quality
Streams
+ Lower cost to maintain traffic during
construction (similar to Concept 2)
+ Least impact to Oil and Gas Wells
- Highest flood plain impact
- Only concept to impact a potential waste
site
- Greatest potential for impacts to deep
mined areas (subsidence potential)
- Most potential forestland impact
- Greatest length of new (offline) alignment
(basically equal to Concept 2)
- Longest alignment to construct
- Requires relocation of a Sanitary Pump
Station (Concepts 1 and 3)
- Higher construction cost (essentially equal
to Concept 2)
- Higher cost to maintain traffic during
construction (similar to Concept 1)
- Second highest potential forestland impact
- Largest estimated overall footprint
(disturbance area)
- Greatest length of new (offline) alignment
(basically equal to Concept 4)
- Higher construction cost (essentially equal
to Concept 3)
The estimated cost range for all concepts is between $80-100 million.
*NWI = National Wetland Inventory
**NHD = National Hydrography Dataset
As of 11/09/16