<LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L <LOQ <LOQ <LOQ <LOQ 5.09 0.616 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 3.21 0.31 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 5.47 0.638 <LOQ <LOQ <LOQ <LOQ <LOQ 2 Croton Point Sanitary Landfill Railroad 1 Landfill, NYSDEC Site #360001 Post Closure Monitoring and Sampling Report, Table 6 (RR7): Groundwater Constituent: Sampling Period: Sampling Date: 1,2-dichloroethane 1,2-dichloropropane 1,3,5-trimethylbenzene 1,3-dichlorobenzene 1,3-dichloropropane 1,4-dichlorobenzene 2,2-dichloropropane 2-butanone 2-chlorotoluene 4-chlorotoluene Benzene Bromobenzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dichloroethane cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane Ethylbenzene Hexachlobutadiene Isopropylbenzene Methyl iso-butyl ketone Methyl tert butyl ether Methlene Chloride Naphthalene N-Butylbenzene N-propybenzene O-xylene P & M-xylene P-isopropyltoluene SEC-butylbenzene Styrene DL/LOQ Units RR-7 2018 10/31/2018 RR-7 2020 3/3/2020 RR-7 2021 5/5/2021 0.5 0.5 0.5 0.5 0.5 0.5 0.5 2 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 2 0.5 0.5 0.5 0.5 0.5 0.5 1 0.5 0.5 0.5 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 3.68 1.92 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 0.25 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 0.831 <LOQ <LOQ 140 E <LOQ <LOQ <LOQ 0.4 <LOQ <LOQ <LOQ <LOQ 2.76 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 3.44 2.21 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 0.903 <LOQ <LOQ 97.3 <LOQ <LOQ <LOQ 0.755 <LOQ <LOQ <LOQ <LOQ 37.5 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 2.21 1.45 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 76.1 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 3 Croton Point Sanitary Landfill Railroad 1 Landfill, NYSDEC Site #360001 Post Closure Monitoring and Sampling Report, Table 6 (RR7): Groundwater Constituent: Sampling Period: Sampling Date: Tert-butylbenzene Tetrachloroethene Toluene trans-1,2-dichloroethene trans-1,3-dichloropropene Trichloroethene Trichlorofluoromethane Vinyl chloride DL/LOQ Units RR-7 2018 10/31/2018 RR-7 2020 3/3/2020 RR-7 2021 5/5/2021 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L <LOQ 2.69 <LOQ 2 <LOQ 2.36 <LOQ 15.1 <LOQ 1.52 <LOQ 1.84 <LOQ 2.41 <LOQ 12.8 <LOQ 0.741 <LOQ 0.889 <LOQ 1.24 <LOQ 11.4 4 Croton Point Sanitary Landfill Railroad 1 Landfill, NYSDEC Site #360001 Post Closure Monitoring and Sampling Report, Table7 (RR-L): Surface Water Constituent: Sampling Period: Sampling Date: DL/LOQ Units RR Surface Left RR Surface Left RR Surface Left 2018 2020 2021 11/15/2018 3/12/2020 5/6/2021 Boron Calcium Iron Magnesium Potassium Sodium Aluminum Antimony Arsenic Barium Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Nickel Selenium Silver Thallium Vanadium Zinc Alkalinity as Calcium Carbonate 100 1000 50 1000 100 1000 50 20 10 10 10 10 10 10 50 10 10 10 20 20 10 20 80 5 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L <LOQ 23400 1020 5210 1800 17300 639 <LOQ <LOQ 16.8 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 60.8 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 74.3 BioChemical Oxygen Demand Asp Calcium by ICP-AES Chloride - ASP 2 1000 5 mg/L ug/L mg/L <LOQ 23400 34 369 45200 703 82100 33100 637000 390 <LOQ <LOQ 20.6 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 32.9 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 69.4 130 27800 960 31000 12900 230000 504 <LOQ <LOQ 18.7 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 71.1 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 57 45200 1525 <LOQ 27800 550 1 Croton Point Sanitary Landfill Railroad 1 Landfill, NYSDEC Site #360001 Post Closure Monitoring and Sampling Report, Table7 (RR-L): Surface Water Constituent: Sampling Period: Sampling Date: DL/LOQ Units RR Surface Left RR Surface Left RR Surface Left 2018 2020 2021 11/15/2018 3/12/2020 5/6/2021 ASP Total Cyanide Chemical Oxygen Demand 0.01 5 mg/L mg/L 0.01 18 <LOQ 18 0.006 14 Color, Apparent ASP Hardness as Calcium Carbonate Hexavalent Chromium, ASP ASP Mercury ASP Magnesium Ammonia as N Nitrite Nitrogen as N N-Nitrate Calculated Corrosivity/pH 1 1 40 0.2 1000 0.05 0.01 0.05 0.1 units mg/L ug/L ug/L ug/L mg/L mg/L mg/L units 30 80 <LOQ <LOQ 5210 0.0621 <LOQ 0.53 7.8 30 450 <LOQ <LOQ 82100 0.161 0.0157 0.542 7.62 15 200 <LOQ <LOQ 31000 0.111 <LOQ 0.414 7.95 Phenolics, Total Recoverable ASP Metal Digestion - Aqueous NH4 Preparation 0.025 mg/L <LOQ Complete Complete Sulfate, Aqueous Total Dissolved Solids Total Kjeldahl nitrogen as N-ASP