HomeMy WebLinkAbout20240815 6584 McLin Yard Cost Estimate Memo1
Memo
Date: Thursday, August 08, 2024
Project: 6584 TLine: Mitchell (MITC) - Rifle (UTER) Electric Transmission Line Rebuild (McLin Yard).
To: Garfield County, Colorado
From: Brian Brown – HDR Engineering
Subject: Cost Estimate Memo
Public Service Company of Colorado (PSCo), an Xcel Energy company (Xcel), is proposing to rebuild a 25-mile
segment of a 69-kilovolt (kV) overhead transmission line from the Mitchell Creek Substation within the City of
Glenwood Springs and unincorporated Garfield County, Colorado to the Rifle Ute Substation in unincorporated
Garfield County.
Per County direction, Xcel will obtain a Grading Permit for the McLin Yard.
The McLin yard is one of the staging yards where material and equipment will be stored and where material
assembly will occur. Access to the 15-acre yard will be from the east and will lead to a ~2-acre stabilized staging
area (SSA). The remainder of the yard is expected to be drive and crush without additional aggregate stabilizing .
Upon completion of the project , the stabilized staging area aggregate will be removed and stockpile d topsoil will
be replaced to cover the SSA. Preconstruction grades are to generally match post construction grades and the
site will be revegetated to generally match preconstruction vegetation density.
Per the Garfield County Grading Permit Section 4, “Required Elements of Vegetation and Reclamation Plan”, the
pre-construction and post -construction topography and vegetation density will generally match. Therefore, cost
estimates are based on $2,500/acre of disturbance.
Conservatively, it is assumed that Xcel will disturb no more than half of the total yard area. Maximum yard
disturbance is assumed to be 7.5-acres . This equates to $18,750 that will be provided to the County via a Letter
of Credit or a Surety Bond for the McLin Yard.