Revised RAP scheduled to be implemented. The Har Sinai property is 17.6-acres of open woodland improved with two houses, a garage and a shed. Located in the Greenspring area of Baltimore County, the site is surrounded by residential properties. Privately owned since 1886, the site has been residential since at least 1957. In February 1998, Har Sinai Holding Inc. acquired the property for future redevelopment as a school and synagogue.
Potable water is supplied by three on-site domestic wells.
At least 52 drinking water wells are located within a half-mile radius of the property, nine of which are downgradient. The property is underlain by a shallow water table aquifer and a deep confined aquifer. Groundwater flow is directed to the south. Private septic sewer systems are maintained on-site and in the surrounding area. Overland flow from the site enters a drainage swale that bisects the property centrally and a wetland intersects the swale along the property s southern boundary.