Robert J. McLeod, the Washington Suburban Sanitary Commission's former general manager, has billed the WSSC for $2,625 in consulting fees for 15 hours of work he did between Jan. 3 and Jan. 19 in helping to sell the agency's double-A rated bonds to investors.

McLeod, who resigned Dec. 31 as the agency's $54,000-a-year top executive, received a $1,500 retainer, as well as $75 an hour for the 15 hours of work he charged the agency, according to the bill he submitted on Monday. A copy of the bill was put into the record at yesterday's meeting of the Montgomery County council.

McLeod is also entitled to receive full reimbursement for travel and hotel expenses although these expenses were not included with his bill. WSSC Commissioner Dean Hill, who said she accompanied McLeod on one selling trip to New York's Wall Stree, said the group stayed at the Waldorf Astoria Hotel in rooms costing "about" $65 a night. She said she did not know how much McLeod would bill the agency for.

The WSSC's annual bond sale, this year totaling $70 million, will be held toay at 11 a.m. McLeod was retained the day after he retired to help sell the bonds, which have always sold out before, on the basis of his past experience with the agency, he said at the time.