Beginning at the intersection of the center lines of Pennsylvania Avenue (Md. 4) and Dower House Road, thence southerly and southeasterly with the center line of Dower House Road to the center line of Woodyard Road (Md. 223), thence southwesterly with the center line of Woodyard Road to the center line of Piscataway Creek, thence southwesterly with the center line of Piscataway Creek to the center line of Windbrook Drive, thence northerly with the center line of Windbrook Drive to the center line of Thrift Road, thence northeasterly with the center line of Thrift Road to the center line of Tippett Road, thence northerly with the center line of Tippett Road to the center line of Piscataway Road (Md. 223), thence northeasterly with the center line of Piscataway Road to the center line of Steed Road, thence northwesterly with the center line of Steed Road to the center line of Allentown Road (Md. 337), thence northeasterly with the center line of Allentown Road to the center line of Suitland Parkway, thence easterly with the center line of Suitland Parkway to the center line of Pennsylvania Avenue (Md. 4), thence southeasterly with the center line of Pennsylvania Avenue to the point of beginning.