1. Meridian Surveys Inc. 7310 Grove Rd Ste 109, Frederick, MD 21704 Coordinate: 39.39063,-77.41316 Phone: (301) 637-0566
2. R K Maddox Surveys 4011 Baker Valley Rd, Frederick, MD 21704 Coordinate: 39.34476,-77.39988 Phone: (301) 831-1116