Attachments.pdf

This is a Performance Work Statement (PWS) for hand-pulling Eurasian watermilfoil removal services at two U.S. Army Corps of Engineers lakes in Vermont: North Hartland Lake and North Springfield Lake (Stoughton Pond).

The PWS outlines the scope of invasive aquatic plant removal work required at both reservoirs. At North Hartland Lake, the milfoil removal area encompasses approximately 32.06 acres across multiple coverage density zones, ranging from less than 1% coverage to 75-100% coverage, with the highest densities located along the primary channel. At North Springfield Lake (Stoughton Pond), the removal area focuses on the recreational access zone near the boat ramp, where Eurasian watermilfoil represents 44.1% of surveyed points, making it the dominant invasive species present. The document provides detailed bathymetric maps identifying water depth contours, milfoil density distributions, and designated hand-pulling zones with established boat launch access points. Work is to be performed at North Hartland Lake from the existing boat launch facility and at North Springfield Lake from the Stoughton Pond boat ramp. The PWS includes informational maps showing coverage categories, abundance levels, and the spatial extent of infestation areas to guide contractor performance in mechanically removing the invasive vegetation while minimizing disturbance to native aquatic plant communities and lake substrates.