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Construction

Surveys

Pre-construction survey schedule
A: Class III cultural resources survey (archaeological)

Survey Description: Crews review areas with high probability for archaeological resources.

Timeframe: Fall 2014 through summer 2015

Survey Area: Areas within a 500-foot buffer of the route with high probability for archaeological resources

Survey Method: Property access required for walking and soil sampling

B: Historic architectural survey (standing structure)

Survey Description: Crews review houses and outbuildings within a half-mile buffer of the route for historical significance.

Timeframe: Fall 2014 through summer 2015

Survey Area: Within a half-mile buffer of the route

Survey Method: No property access required for photographs of structures

C: Wetland verification and delineations

Survey Description: Crews verify wetland boundaries and delineate US Army Corps of Engineers Jurisdictional Wetlands.

Timeframe: Fall 2014 through summer 2015

Survey Area: Right-of-way

Survey Method: Property access required for walking and soil sampling

D: Soybean cyst nematode soil sampling

Survey Description: Crews collect soil samples to test for the presence of the soybean cyst nematode

Timeframe: Fall 2014 through summer 2015

Survey Area: All tilled property within the right-of-way

Survey Method: Property access required for walking and soil sampling

E: Preliminary engineering review

Survey Description: Engineers review constructability and possible obstacles

Timeframe: Winter 2014 through summer 2015

Survey Area: Right-of-way and all structure locations

Survey Method: Property access required for walking and vehicle

F: Soil borings

Survey Description: Crews perform soil borings at each structure location, up to 50 feet around the structure, to gain soil characteristics for design.

Timeframe: Winter 2014 through summer 2015

Survey Area: Work will occur at the structure locations. Right-of-way and non-right-of-way access may be required

Survey Method: Property access required for walking and vehicle

G: Preliminary structure staking

Survey Description: Engineers and surveyors review each structure location for acceptability and constructability

Timeframe: Spring and summer 2015

Survey Area: Work will occur at the structure locations. Right-of-way and non-right-of-way access may be required

Survey Method: Property access required for walking and vehicle

H: Prairie butterfly occurrence survey: Dakota Skipper and Poweshiek Skipperling

Survey Description: Crews review the Dakota skipper and Poweshiek skipperling habitat during flight time

Timeframe: Summer 2015

Survey Area: High probability areas from the 2012 and 2013 surveys

Survey Method: Property access required for walking

I: Engineering staking review

Survey Description: Engineers review structure locations

Timeframe: Summer 2015 through 2018

Survey Area: Work will occur at the structure locations. Right-of-way and non-right-of-way access may be required

Survey Method: Property access required for walking and vehicle

J: Final structure and right-of-way staking

Survey Description: Survey crews stake the final structures, edge of right-of-way, clearing and access locations, and wetlands or other environmentally sensitive areas

Timeframe: As early as fall 2015 through 2018

Survey Area: Right-of-way

Survey Method: Property access required for walking and vehicle

K: Bald eagle and raptor stick nest surveys

Survey Description: Crews review a half-mile buffer of the route for bald eagle nests and the right-of-way for other raptor nests before tree clearing

Timeframe: During construction in spring 2016, 2017, and 2018

Survey Area: Within a half-mile buffer of the route

Survey Method: Property access required for walking

L: Tree inventory (North Dakota only)

Survey Description: Crews record the number and species of trees and shrubs that may be removed within the right-of-way

Timeframe: Fall through winter 2015 before tree clearing

Survey Area: Right-of-way (North Dakota only)

Survey Method: Property access required for walking

M: Sharp-tailed grouse lek survey

Survey Description: Crews survey sharp-tailed grouse leks during the lekking season (March 1 through June 30). If leks are present, construction will be restricted in that location

Timeframe: During construction in spring 2016, 2017, and 2018

Survey Area: Large contiguous grasslands and pastures of Coteau des Prairies and Hecla Sandhills

Survey Method: Property access required for walking

N: Migratory nesting bird occurrence survey

Survey Description: Crews survey for ground bird active nests in grasslands during the nesting season (April through August)

Timeframe: During construction in spring and summer 2016, 2017, and 2018

Survey Area: Pasture and grassland areas within the right-of-way

Survey Method: Property access required for walking

O: Piping plover nest survey

Survey Description: Crews survey for piping plover during the territory establishment and nesting season (May through June)

Timeframe: During construction in spring and summer 2016, 2017, and 2018

Survey Area: Alkali wetlands or wetlands with exposed fringe within a half-mile buffer of the route

Survey Method: Property access required for walking

©2017 Otter Tail Power Company and Montana-Dakota Utilities Co.

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