Edgartown wastewater plant manager Joseph Alosso resigned Tuesday, bringing to an end a tenure that culminated in a scathing report from special counsel last week alleging Mr. Alosso had acted with “reckless disregard” for Edgartown taxpayers through lax billing practices at the plant.

Town attorney Ronald Rappaport, labor counsel Jack Collins and Mr. Alosso’s own counsel reached an agreement immediately prior to a joint meeting of the town selectmen, wastewater commission and personnel board. Mr. Alosso had been on paid administrative leave for the past week.

At the meeting, the wastewater commission voted to accept a resignation agreement letter between Mr. Alosso and the town of Edgartown. The agreement stipulates that Mr. Alosso’s resignation will be effective May 16, and he will go on unpaid administrative leave starting on Friday, Feb. 10.

Last week, special counsel John Paul Sullivan, a retired judge who was appointed by the town to investigate allegations of billing mismanagement at the Edgartown wastewater plant, delivered a sharply critical 64-page report that detailed a long list of deficiencies in billing practices and called out town wastewater commissioners’ lack of oversight of plant operations.

After Friday, Mr. Alosso will have “no active or passive role in [plant] affairs and will perform no services on behalf of the [plant] or the town,” the letter states.

Mr. Alosso will be paid for nine accrued vacation days and 25 per cent of 111 accrued sick days, per personnel by-law. Nothing in the agreement “will affect Alosso’s creditable service for retirement calculations,” the letter states; he has not participated in the town’s health insurance plan, and will continue not to do so.

The roughly three page agreement also includes stipulations that Mr. Alosso and the town will not make “any public oral or written communication to any person or entity which has the effect of damaging either’s reputation, or otherwise working in any way to either’s detriment,” and that if asked by a prospective employer, the town will only confirm dates of employment, pay and job assignments.

The agreement further stipulates Mr. Alosso will release the town from “any and all claims, forever,” including any legal action; that Mr. Alosso will return any town computers, iPads, keys and equipment, and that he will be allowed to remove any personal items from the plant under Mr. Rappaport or a wastewater commissioner’s supervision.

If the resignation agreement was not agreed to by all parties, a wastewater commission hearing about Mr. Alosso’s employment would have been scheduled for today.

Mr. Alosso declined to comment about the agreement.

“Just for the record, the board of selectmen is in concurrence with the decision to sign this agreement,” said selectman and board chairman Arthur Smadbeck on Tuesday.

“This has been a very tense and a highly stressful period for the town,” Mr. Rappaport said, thanking Mr. Sullivan, a longtime town resident, for going above and beyond the work he was paid for. He also advised all town boards to read the report. “I think it really gives a lesson on what the role of boards are.”

“I’m personally saddened, I think we all are, by these events,” Mr. Rappaport said at the end of the meeting, noting that better systems have been instituted at the plant. “I think in the long run Edgartown will be better off for this unfortunate series of events that has happened.”

He also praised Mr. Collins for his assistance with quickly reaching a resolution. “Employment issues are very, very delicate, and we’ve managed to get through them without any major calamities in terms of lawsuits,” he added.

Mr. Alosso is still in his job as plant superintendent at the Oak Bluffs wastewater facility, though the wastewater commission there voted two weeks ago to eliminate his position. Mr. Collins informed the Oak Bluffs wastewater commission on Tuesday afternoon that they do not have the authority to fire Mr. Alosso; only the board of selectmen may do so. The commission then voted two to one to recommend the selectmen eliminate Mr. Alosso’s position at an upcoming meeting.