The state Department of Energy and Environmental Protection (DEEP) is seeking grant proposals from owners and operators of public or private marine facilities wishing to install mine sewage disposal facilities.

The state also wants to know about existing marine sewage disposal units in need of substantial repairs or upgrades.

Also sought are those seeking funds to operate new or existing facilities, including pump out boats and central vacuum pump out systems incorporated within the marine or boatyard dock system.

The DEEP has received more than $1 million in federal funds for the 2016 boating season for boat sewage disposal facilities or pump out stations on Long Island Sound and Candlewood Lake.

The program is administered by the DEEP with a grant from the U.S. Fish & Wildlife Service’s Clean Vessel Act program.

All recreational pump out facilities in Connecticut are now offering free service to boaters, according to the DEEP.

For a copy of the Request for Proposals, visit www.ct.gov/deep/cva and select “Grant Program Information” or call Kate Hughes Brown at 860-447-4340 or email kate.brown@ct.gov.

Submissions should be made to DEEP, Navigation and Boating Instruction Unit, Boating Division, P.O. Box 280, 333 Ferry Road, Old Lyme, CT 06371.