In what Assistant Town Manager Stephen Owen called a unique agreement, Loudoun County, the town of Leesburg and two private developers will share the cost of an $8,000-foot extension of a water line along Rte. 643 that will eventually reach to the Leesburg Municipal Airport. The board of supervisors approved the agreement two weeks ago; last week the Leesburg Town Council joined the pact.

The two developers had expressed interest in sharing the $861,000 cost because water line construction can begin earlier than if one or both of the jurisdictions paid for it alone, Owen said.

One of the new water customers would be the National Guard Armory proposed to be built on a 92-acre tract just outside the town limits that the county bought earlier this year.

In a separate action, the council repealed an ordinance that would have required the armory and other county government facilities planned for the site to pay a 50 percent surcharge to hook up to the town water line. The surcharge ordinance was used for out-of-town customers before they were brought into the town under last year's annexation agreement. According to Owen, the town will be more than compensated for the lost hook-up fees by the shared water line cost.

In other action, the council agreed to remove the northwest loop of Catoctin Circle from the town's land use plan to enable officials to accept the offer of a 141-acre parcel of parkland from Leesburg resident and businessman William Rust.

Rust offered the parcel to the town for use as a park on condition that it never be bisected by a road. If the planned expansion of Catoctin Circle had gone forward, officials feared that Rust would retract his offer. With the park at the site instead of the possibility of future residential development, expansion of the northwest quadrant is not necessary, officials said.

The council also authorized a contract for the design and construction of the northeast quadrant of Catoctin Circle.