SYKESVILLE — The Planning Commission Monday night rejected a proposed new infiltration storm water management system in favor of a more traditional basin-type plan for Boulder Hill Estates.
After debating for three months the merits of a trench system designed by subdivision engineer Dan Staley, the commission voted to go with a double basin presented by town engineer Bob Bond.
Commission members told Staley they had doubts about how long thenew trench system would last and concerns about replacement costs ifit failed.
"Staley's plan is a good one, but I don't know if the town has the money for it," said Town Manager James L. Schumacher.
Bond noted that with the proposed infiltration system atop a hill, "the water has no place to go" in event of failure and overflow.
Bond's system calls for two hot dog-shaped basins, each about 340 feet long and about 900 feet apart. The water enters the basin and is directed away through a 24-inch pipe.
"An emergency spillway would take excess water off in a 100-year storm," Bond said.
The biggest problem with the basins would be checking the condition of some existing pipe and getting three off-site property rights through which the pipe would run, Bond said.
While acknowledging that the infiltration system would provide better water quality, the commissioners' doubts about the prototype overrode its strong points.
"The advantage of (the basin) system is that you can see what's happening, where you can't in the infiltration system," said member Bruce Fernalld.
Thecommission also heard from several adjacent property owners who expressed concern about Boulder Hill houses facing theirs and a reductionin seclusion of their Oklahoma Avenue homes.
Developer John Serrasaid he and Staley had talked with the residents and were working out their problems.
Despite approval of a storm water management system, which has been the major holdup of the project in recent months,the commission again deferred preliminary plan approval until details could be worked out on the basins.
Commission member Jonathan Herman said he still has concerns about the number of lots to be built,an adequate tree-planting plan and widening of a portion of OklahomaAvenue.
"I need preliminary approval by July 1 and final approvalby Jan. 1, 1993, or I'll be subject to the new forestation law," Staley said.
The commission also reviewed new concept plans for Shannon Run, whose developer, David Thaler and Associates, has redesigned the subdivision to more closely conform to small town guidelines being drawn up by the planners.