only to the sample identified in this report. Page 3 of 4 AX08979 Sample No. Method Test Description Results Qualifier Units DL/LOQ Analyzed on Validator SW846 8260C Dibromochloromethane < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Dibromomethane < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Dichlorodifluoromethane < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Ethylbenzene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Hexachlobutadiene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Isopropylbenzene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Methyl iso-butyl ketone < LOQ ug/L 2.00 05/19/2021 MG SW846 8260C Methylene Chloride < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C Naphthalene < LOQ ug/L 0.50 05/19/2021 MG SW846 8260C N-butylbenzene < 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 This sample deviates from the method stipulated preservation requirements of pH < 2. This method deviation may render the data unsuitable for regulatory purposes. jc 6/29/21 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 "J" Flag - Estimated value on an analyte found below the calibration range and at or above the detection limit. RWHJr The following tentatively identified compound (TIC) is present; the concentration given is an estimate: Tetrahydrofuran 21.2 ug/L MG 6/30/21 Tentative identification of non-target sample components has to have an area height >10% nearest internal standard and a mass spectral library search result (Q-value) of 85% or greater for reporting. The laboratory provides these TIC results to facilitate remediation. NYSDOH ELAP and NELAC do not offer accreditation for these TIC list chemicals in the S&HW matrix. RWHJr 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.AX09096 REPORT OF ANALYSIS Westchester County Department of Labs and Research Sample Location : 10 Dana Road Received By : SM JLM Bottle No : S0724 C0149 D0232 B1083 B7 F642 G4799 E3243 K0151 152 153 K0388 1817 8961 CROTON POINT PARK CROTON, NY 10520 Collection Point : Valhalla, New York 10595 RINSE BLANK Collected By : STEY & DUVAL Collection Date : 05/12/2021 AT 10:15:00AM 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 : DI WATER 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 < LOQ < LOQ < LOQ < LOQ < LOQ < LOQ 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 100 06/02/2021 MO MO MO MO MO MO 12.9 < 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 ug/L ug/L ug/L ug/L ug/L 10.0 05/20/2021 2.0 05/19/2021 2.0 05/19/2021 2.0 05/19/2021 2.0 05/19/2021 2.0 05/19/2021 4.0 05/19/2021 2.0 05/19/2021 10.0 05/19/2021 2.0 05/19/2021 2.0 05/19/2021 2.0 05/19/2021 4.0 05/19/2021 4.0 05/19/2021 2.0 05/19/2021 4.0 05/20/2021 MO MO MO MO MO MO MO MO MO MO MO MO MO MO MO MO ASP Metals by EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA 6020A EPA