(a) in the Commonwealth of Pennsylvania, the Counties of Allegheny, Beaver, Berks, Blair, Bucks, Carbon, Chester, Columbia, Cumberland, Dauphin, Delaware, Huntington, Juniata, Lancaster, Lebanon, Lehigh, Luzerna, Mifflin, Monroe, Montgomery, Northampton, Northumberland, Perry, Philadelphia, Schuylkill, York;

(b) in the Commonwealth of Virginia, the Counties of Clarke and Frederick;

(c) in the State of New Jersey, the Counties of Burlington, Camden, Gloucester, Salem, Mercer, Hunterdon, Warren and Somerset;

(d) in the State of Delaware, the County of New Castle;

(e) in the State of Maryland, the County of Cecil and Hartford;

(f) in the State of West Virginia, the County of Berkley.