Project Substitution Changes Document Summary

This is a Project Substitution Changes Document for the Supplee Stream Restoration Project, a stream habitat restoration initiative administered by the Lancaster County Conservation District in Pennsylvania. The document provides a comprehensive inventory of planned best management practices (BMPs) for approximately 3,500 linear feet of Conowingo Creek restoration work in Fulton Township, Lancaster County. The project encompasses 71 distinct in-stream and riparian structures including toe logs, random boulder clusters, rock/log vanes, bank grading sections, rock cross vanes, root wads, riffles, mudsills, rock toe placements, brush mattresses, stream crossings, and bankfull benches, with all structures designated as permanent installations except one temporary crossing. Each structure is georeferenced with precise latitude and longitude coordinates and includes planned impact areas measured in square feet and linear feet. Bidders are required to complete the document by specifying their intended modifications to planned BMP sizes, indicating whether they plan to keep, remove, or modify each structure and providing detailed explanations of any changes including modifications to materials, specifications, or impact areas. The document serves as a mandatory bid submission requirement for the rebid evaluation process, with bids due by 11:30 PM EST on June 13, 2026, public bid opening on June 15, 2026 at 10:00 AM EST, and bid award anticipated on July 14, 2026 at 10:00 AM EST, with project performance scheduled from June 1, 2026 through February 15, 2027.

The Project Substitution Changes Document functions as a technical baseline allowing qualified bidders to propose site-specific variations from the original design while maintaining accountability for all planned structures and their specifications. Completion of this document is a critical bid submission requirement alongside the Project Bid Form & Schedule, bid bond, references, narrative describing regional stream restoration experience, and firm overview documentation. The structured format enables the evaluation committee to assess each bidder's technical approach and engineering justification for any proposed modifications, ensuring transparent comparison of bids and compliance with project design standards and permit requirements established by the Army Corps of Engineers and Pennsylvania Department of Environmental Protection.