storm water runoff from the parking lot is controlled with grass buffers. with picnic tables, shrubs, trees and flowers, the marina looks more like a park than a boatyard. all parking areas and driveways are covered with crushed stone. a special drain traps silt and skims oil from the work yard and parking area before it can reach the water. a portable oil-changing unit that uses a vacuum tank to suck oil out of engines through the dip-stick tube makes oil changing easy and spillproof.