December 13, 2019 Page 3
20191213 Change Order Review Letter.docx 3066.18
CHANGE ORDER SUMMARY
Sanborn Head summarized the change order information in Table 1. When reviewing the
table, please note that where change order items are specific to a Contract quantity or unit
rate, those quantities and unit rates were adjusted accordingly. For items not specific to a
Contract quantity or unit rate, those items are considered stand alone and are represented
as such. Also, an allowance for the Performance Bond is added as the last entry and reflects
an additional cost equal to 1.5 percent of the total cost increase.
Table 1 presents a summary of the cost changes discussed above, which reflects a Total
Contract Increase of $366,271.44. Sanborn Head understands that the City issued one change
order in the amount of $175,000, and that another change order of $191,274.44 will need to
be issued to Charter.
As requested, the City also asked Sanborn Head to provide a change order for our services
associated with the additional requirements imparted by the New Hampshire Department
of Environmental Services and the associated construction delays. Our change order totaling
$89,700 is included as Exhibit 3.
CLOSING
Sanborn Head appreciates the opportunity to be of continued service to the City of Nashua.
Please contact either of the undersigned should you require additional information.
Very truly yours,
SANBORN, HEAD & ASSOCIATES, INC.
Edward A. Galvin, PE Eric S. Steinhauser, PE, CPESC, CPSWQ
Project Manager Senior Vice President
ESS/EAG:ess
Table 1 Summary of Contract Cost Changes
Exhibits: { - Final Contract Price (Charter)
2 - Generator Connection backup information (Charter)
3 - Budget Increase Letter (Sanborn Head)
Copy to: Kerry Converse, City of Nashua
P:\3000s\3066.18\Source Files\Contractor Change Order Request\CO#2\20191213 Change Order Review Letter.dacx
SANBORN I HEAD
