Fairfax County announced in February that it wanted to move one of two county septic tank dumping sites from Colvin Run in Great Falls to Lake Fairfax Maintenance Area 6, a parcel on the Reston/Vienna line owned by the park authority.
The Colvin Run site, which is currently closed for nearby construction, has been used by sewage haulers since 1970. The facility is outdated, in a flood plain, smells and is poorly equipped to handle truck turnaround, county officials said.