< LOQ ug/L 0.50 05/19/2021 MG SW846 8260C N-propylbenzene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C O-xylene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C P & M-xylene < LOQ ug/L 1.00 05/19/2021 MG SW846 8260C P-isopropyltoluene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C SEC-butylbenzene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Styrene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C TERT-butylbenzene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Tetrachloroethene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Toluene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C trans-1,2-dichloroethene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C trans-1,3-dichloropropene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Trichloroethene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Trichlorofluoromethane < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Vinyl chloride < LOQ ug/L 0.50 05/19/2021 MG Bromomethane and 1,2,4-trichlorobenzene LCS recoveries exceeding the acceptable QC criteria. Established high bias on <LOQ results are valid to report. JC/RWHJr 6/29/21 NYSDOH ELAP and NELAC do not offer accreditation for Alkalinity, Ammonia, Biochemical Oxygen Demand, Total Kjeldahl Nitrogen and Total Phosphorus in the S&HW Matrix. Unless the sample is otherwise qualified, all Quality Control acceptance criteria have satisfied method and NELAC requirements. DL = Detection Limit Approved By LOQ = Limit of Quantitation Robert Hilbrandt Environmental Laboratories NYS ELAP # 10108 (914) 231-1620 J=value is an estimate QA Officer Report Number: H = exceeds holding time Date Approved : 1813 07/14/2021 EMAIL 7/14/2021 These analytical results relate only to the sample identified in this report. Page 4 of 4 Sample No.AX09097 REPORT OF ANALYSIS Westchester County Department of Labs and Research Sample Location : 10 Dana Road Received By : SM JLM Bottle No : S0702 G4963 F123 G3319 D1724 C0118 B1071 B758 K1645 0072 1805 5671 9108 9064 CROTON POINT PARK CROTON, NY 10520 Collection Point : Valhalla, New York 10595 RFW-SD Collected By : STEY & DUVAL Collection Date : 05/12/2021 AT 8:00:00AM Submitted On : 05/12/2021 AT 11:16:00AM PWS No. : Type Descriptor : Source ID : 000 ID of Source : Agency : Croton Landfill Westchester County DEF 270 North Avenue New Rochelle, New York 10801 Attn: Peter Costa pH : Free Cl2 : Residual Cl2 : Sample chilled on arrival ? : YES Sample Type : NP_STRM addt'l Report To : Comment : Method Test Description Results Qualifier Units DL/LOQ Analyzed on Validator Inorganics ASP Metals by EPA 6010C EPA 6010C EPA 6010C EPA 6010C EPA 6010C EPA 6010C EPA 6010C Boron Calcium Iron Magnesium Potassium Sodium 340 55200 17300 78000 27100 402000 ug/L ug/L ug/L ug/L ug/L ug/L 50 06/02/2021 1000 06/02/2021 50 06/02/2021 1000 06/02/2021 100 06/02/2021 1000 06/03/2021 MO MO MO MO MO MO Matrix spike recovery for Sodium was below acceptable QC limits due to matrix masking (high analyte value obscured spike recovery). E.M. 6/4/2021 ASP Metals by EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A Aluminum Antimony Arsenic Barium Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Nickel Selenium 106 < LOQ 38.9 265 < LOQ < LOQ < LOQ < LOQ < LOQ < LOQ 111 < LOQ < LOQ 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 50.0 05/20/2021 10.0 05/19/2021 10.0 05/19/2021 10.0 05/19/2021 10.0 05/19/2021 10.0 05/19/2021 10.0 05/19/2021 10.0 05/19/2021 50.0 05/19/2021 10.0 05/19/2021 10.0 05/19/2021 10.0 05/19/2021 20.0 05/19/2021 MO MO MO MO MO MO MO MO MO MO MO MO MO NYSDOH ELAP and NELAC do not offer accreditation for Alkalinity, Ammonia, Biochemical Oxygen Demand, Total Kjeldahl Nitrogen and Total Phosphorus in the S&HW Matrix. Unless the sample is otherwise qualified, all Quality Control acceptance criteria have satisfied method and NELAC requirements. DL = Detection Limit Approved By LOQ = Limit of Quantitation Robert Hilbrandt Environmental Laboratories NYS ELAP # 10108 (914) 231-1620 J=value is an estimate QA Officer Report Number: H = exceeds holding time Date Approved : 1813 07/14/2021 EMAIL 7/14/2021 These analytical results relate only to the sample identified in this report. Page 1 of 4 AX09097 Sample No. Method Test Description EPA 6020A Results Silver Thallium Vanadium Zinc Alkalinity as Calcium Carbonate - ASP EPA 6020A EPA 6020A EPA 6020A SM22 2320B Qualifier Units < LOQ < LOQ < LOQ < LOQ >500 DL/LOQ Analyzed on Validator ug/L ug/L ug/L ug/L mg/L 20.0 05/19/2021 10.0 05/19/2021 20.0 05/20/2021 80.0 05/19/2021 5.0 05/17/2021 MO MO MO MO MO mg/L 2 05/17/2021 8:55 am 05/12/2021 11:59 am 1000 06/02/2021 125 06/02/2021 0.005 05/14/2021 5.0 05/20/2021 10 05/12/2021 3:22 pm 1 06/03/2021 40 05/12/2021 3:34 pm 0.20 05/24/2021 1000 06/02/2021 1.25 06/02/2021 0.01 05/13/2021 11:18 am 0.05 06/07/2021 0.1 05/12/2021 3:23 pm MO MO MO MO MO MO JLM MO MO MO