The Southborough Conservation Commission voted on Feb. 13 to issue a Certificate of Compliance (COC) for roadway improvements built as part of the 2017 Washington Street/Coslin Drive and Crystal Pond Road realignment project, recorded under DEP file number 290-826.

Beals & Thomas and the project team told the commission the work was completed in accordance with the approved plans except for two items identified in the original design that were deemed unnecessary: an optional 5-foot feature and a force main connection for a wastewater pump station that was not constructed when the planned corporate campus did not proceed. The commission’s staff and engineer reviewed the submission and recommended issuance of the COC for the roadway improvements; commissioners voted in favor.

Commission staff said the outstanding 1973 order of conditions issued by the predecessor Natural Resources Commission remains subject to closure through the Department of Environmental Protection for related work in Westborough; the project team noted they would withdraw or coordinate on that separate item. The commission directed staff to provide the executed COC to the project liaison and to file notice of issuance with town records.

The vote brought formal closure for the road-improvement elements reviewed under DEP file 290-826; other historic orders tied to the site remain under separate administrative processes.