WALDRON EMGivecHING © CONMETRUC TIN, INC,
To: William Keating, P.E., Project Engineer, Nashua Wastewater Treatment Facility
From: Erich Gustenhoven, P.E. Waldron Engineering & Construction, Inc.
Date: January 17, 2020
Re: Change Order Request Review 003-Revision 2
NWWITFE Energy Recovery Upgrade Project
Attachments: Methuen Construction PCO #003-Revision 2
Mr. Keating:
Waldron has compiled its review based on review of the Owner’s documentation (design
documents, OEM submittals, submittal reviews, RFI responses, and project notes) and the
Contractor’s documentation (RFI’s, Submittals, Reports, issued Change Orders). Specifically;
Waldron has reviewed the issue of additional work associated with the Unistrut pipe support
system, installed on the Energy Recovery Building roof.
Summary Review
Original Schedule Schedule Direct Schedule Schedule Claim
Adjustment claim Impact Assessment Recommended
None n/a Refer to PCO-004 Refer to PCO-004
Original Cost Cost Adjustment Direct Cost Impact Cost Adjustment
claim Assessment Recommended
None $19,000.87 $13,104 to $19,656 $19,000.87
Detailed Review-Base Cost Validity
Methuen has made a claim for the work as required based on RFI responses, submittal reviews
and Field conditions. The claim is based on their work and their subcontractor’s work resulting
from the above. Waldron has reviewed the design documents, OEM submittals, submittal
reviews, and RFI responses regarding this issue. Waldron has relied on vendor quotes, project
cost estimations, historical project data, RS Means, and its own proprietary cost data to review the
cost validity of the work scope.
The original scope of work included supporting pipe by hanging it directly from the roof/ceiling
of the Energy Recovery Building. The revised scope of work included the additional scope of
installation of a unsitrut system below the roof, from which pipe could then be supported.
Methuen included cost associated with supporting the pipe directly from the roof in their original
price. The addition of the Unistrut system did not substantially alter the cost of this work. The
addition of the Unistrut did cause Methuen to incur additional cost associated with installation of
the system itself, for which we recommend that they are compensated. These costs included the
below:
1. Materials such as Unistrut components and Hilti anchors
WALORDS, CO
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