3,3'-Dichlorobenzidine Croton Point Sanitary Landfill Railroad 1 Landfill, NYSDEC Site #360001 Post Closure Monitoring and Sampling Report, Table 4b: Leachate (RR Sump) County Daily Wastewater DL/LOQ Units Limits (Avg.) RR Sump RR sump RR sump 0.5 ug/L <LOQ 0.682 <LOQ 0.5 ug/L <LOQ 0.552 <LOQ 1 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 0.5 ug/L <LOQ <LOQ <LOQ 5 5 5 5 10 5 5 10 5 5 5 5 10 10 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 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 1.12 <LOQ <LOQ 1.12 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 5 Constituent: 4-Bromophenylphenylether 4-Chloro-3-methylphenol 4-Chorophenylphenylether 4-Nitrophenol Acenaphthene Aceaphthylene Anthracene Azobenzene Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzyl butyl phthalate bis(2-chloroethoxy)methane bis(2-chloroethyl)ether bis(2-Ethylhexyl)phthalate Chrysene Dibenzo(a,h)anthracene Dithylphthalate Dimethylphthalate Di-n-butylphthalate Di-n-octylphthalate Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Croton Point Sanitary Landfill Railroad 1 Landfill, NYSDEC Site #360001 Post Closure Monitoring and Sampling Report, Table 4b: Leachate (RR Sump) County Daily Wastewater DL/LOQ Units Limits (Avg.) RR Sump RR sump RR sump 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 10 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 10 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ 2.06 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 5 ug/L 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 10 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 6 Constituent: Indeno(1,2,3-cd)pyrene Isophrone Napthalene Nitrobenzene n-Nitrosodimethylamine n-Nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol Phenanthrene Phenol Pyrene Croton Point Sanitary Landfill Railroad 1 Landfill, NYSDEC Site #360001 Post Closure Monitoring and Sampling Report, Table 4b: Leachate (RR Sump) County Daily Wastewater DL/LOQ Units Limits (Avg.) RR Sump RR sump RR sump 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ 1.86 <LOQ 5 ug/L <LOQ 1.58 2.2 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 10 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L <LOQ <LOQ <LOQ 5 ug/L 4000 <LOQ <LOQ <LOQ HEM;Oil & Grease Total recoverable Non-polar Extractable Material (TPH) 5 mg/L 2.5 mg/L 100 <LOQ <LOQ 97.3 6.82 7 Croton Point Sanitary Landfill Railroad 1 Landfill, NYSDEC Site #360001 Post Closure Monitoring and Sampling Report, Table 5: Metro-North Source Contributions Month Railroad Landfill Metro-North Railroad Landfill Metro-North Year 2018 2018 2020 2020 January 4,665,879 2,763,750 1,457,310 1642206.667 February 1,556,319 2,579,729 459,936 1293942 March 693,018 2,290,769 972,995 1338673 April 831,448 1,522,154 689,836 1255040 May 655,153 1,603,257 193,856 1605250.333 June 558,538 1,299,319 839,283 1037331 July 587,576 1,619,839 469,014 1098649 August 888,054 2,366,413 511,878 896454 September 481,891 1,727,894 218,402 1018378 October 838,076 2,627,225 677,764 1309685.333 November 1,334,432 2,292,942 409,512 1300782 December 575,267 2,009,215 1,022,207 1880030.667 1 Croton Point Sanitary Landfill Railroad 1 Landfill, NYSDEC Site #360001 Post Closure Monitoring and Sampling Report, Table 6 (RR2D): Groundwater Constituent: Sampling Period: Sampling Date: DL/LOQ Units RR-2D RR-2D 2018 2020 10/30/2018 3/2/2020 RR-2D 2021 5/4/2021 2" 2" 57.75' 57.75' 9.09' 9.35' 48.66' 48.4' 10.10'-9.09' 9.55'-9.35' 133 126 93800 67100 1100 526 62300 45100 5880 4210 61800 44900 251 <LOQ <LOQ <LOQ <LOQ <LOQ 344 224 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 36.7 <LOQ <LOQ <LOQ <LOQ <LOQ 1070 738 196 129 <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ <LOQ 39.9 >500 >500 2" 57.75' 9.2' 48.5' 9.4'-9.2' 171 84900 738 57400 5210 56800 38 <LOQ <LOQ 339 <LOQ <LOQ <LOQ 29.9 <LOQ <LOQ 1150 197 <LOQ <LOQ <LOQ <LOQ <LOQ >500 Diameter (Inches): Well Depth, Tow (ft.): Depth to Water, Tow (ft.) Water Level Elevation (ft.): TOC - TOW (ft.): 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