**Lead (tons) County**  **Site Name Facility Type**  **City Latitude** **Longitude** 0.43 Frederick Frederick Muni Airport Frederick 39.41 -77.37 0.42 Anne ArundelBaltimore-Washington In Airport Baltimore 39.18 -76.67 0.27 MontgomeryMontgomery County Airpa Airport Gaithersburg 39.16 -77.16 0.19 Queen AnnesBay Bridge Airport Stevensville 38.97 -76.32 0.19 Carroll Carroll County Regional Airport Unknown 39.6 -77 0.17 St. Marys Capt Walter Francis Duk Airport Leonardtown 38.31 -76.55 0.13 Harford PHILLIPS AAF Airport ABERDEEN PROVING GROUNDS(ABERDEEN) 39.46 -76.16 0.13 Baltimore RG Steel Sparrows Point, LLC Steel Mill Sparrows Point 39.21 -76.47 0.13 Anne ArundelTipton Airport Fort Meade(Odenton) 39.08 -76.75 0.12Talbot Easton/Newnam Field Airport Easton 38.8 -76.06 0.10Worcester Ocean City Muni Airport Ocean City 38.31 -75.12 0.09 Washington Hagerstown Regional-Ric Airport Hagerstown 39.7 -77.73 0.09Anne ArundelLee Airport Annapolis 38.94 -76.56 0.08Wicomico Salisbury-Ocean City Wi Airport Salisbury 38.33 -75.51 0.08 Charles GenOn Energy, Inc.-Morgantown Electricity Generation via Combustion Newburg 38.35 -76.97 0.07 Caroline RIDGELY AIRPARK Airport RIDGELY 38.97 -75.86 0.07 Prince GeorgesFreeway Airport Mitchellville 38.94 -76.77 0.06 Dorchester Cambridge-Dorchester Airport Cambridge 38.53 -76.03 0.05 Anne ArundelSuburban Airport Laurel 39.07 -76.82 0.05 Prince GeorgesGenOn Energy, Inc.-Chalk Point Electricity Generation via Combustion Aquasco 38.54 -76.68 0.05 Harford Harford County Airport Churchville 39.56 -76.2 0.04 Charles Maryland Airport Indian Head 38.6 -77.07 0.04 Carroll CLEARVIEW AIRPARK Airport WESTMINSTER 39.46 -77.01 0.04 Cecil CECIL COUNTY Airport ELKTON 39.57 -75.86 0.04 Garrett Garrett County Airport Oakland 39.58 -79.33 0.04Allegany Luke Paper Company Pulp and Paper Plant Luke 39.47 -79.05 0.03 Baltimore Martin State Airport Baltimore 39.32 -76.41 0.03 Prince GeorgesPotomac Airfield Airport Friendly 38.74 -76.95 0.03 Kent Eastman Specialties Corporation Chestertown 39.26 -76.08 0.03 MontgomeryMontgomery County RRF Municipal Waste CombustorDickerson 39.2 -77.45 0.02 Harford FALLSTON Airport FALLSTON 39.5 -76.41 0.02 Baltimore ESSEX SKYPARK Airport BALTIMORE 39.26 -76.43 0.02 Baltimore cityBALTIMORE POLICE DEPARTMENT Airport BALTIMORE 39.29 -76.6 0.02 Prince GeorgesWestern Branch WWTP Wastewater Treatment FacilityUpper Marlboro 38.79 -76.72

0.02 MontgomeryGenOn Energy, Inc.-Dickerson Electricity Generation via Combustion Dickerson 39.2 -77.46



### Page 1 of 2**Lead (tons) County**  **Site Name Facility Type**  **City Latitude** **Longitude** 0.02 Washington Holcim (US), Inc. Portland Cement Manufacturing Hagerstown 39.65 -77.68 0.01 Prince GeorgesWashington Executive/Hy Airport Clinton 38.74 -76.93 0.01 MontgomeryDavis Airport Laytonsville 39.24 -77.14 0.01 Carroll Lehigh Cement Company - Union Bridge Portland Cement Manufacturing Union Bridge 39.56 -77.17 0.01 Kent MASSEY AERODROME Airport MASSEY 39.29 -75.79 0.01 Baltimore Constellation - Crane Electricity Generation via Combustion Middle River 39.32 -76.36

0.01 Anne ArundelConstellation - Fort Smallwood Complex Electricity Generation via Combustion Baltimore 39.17 -76.53 0.01 Baltimore Lafarge Building Materials, Inc. Mineral Processing Plant Sparrows Point 39.21 -76.46 0.01 Charles Naval Support Facility, Indian Head Military Base Indian Head 38.58 -77.17



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