York Lab Technical Report — Wastewater Sample Analysis (N5F0331) — June 11, 2025

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Technical Report

prepared for:

Village of Red Hook

7467 S Broadway Red Hook, NY 12571 Attention: J. Cavanaugh

Report Date: 07/03/2025 Client Project ID: Wastewater 2025 York Project (SDG) No.: N5F0331

Revision No. 1.0

CT Cert. No. PH-0800

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New York Cert. No. 11706

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Report Date: 07/03/2025 Client Project ID: Wastewater 2025 York Project (SDG) No.: N5F0331

Village of Red Hook 7467 S Broadway Red Hook, NY 12571 Attention: J. Cavanaugh

Purpose and Results

This report contains the analytical data for the sample(s) identified on the attached chain-of-custody received in our laboratory on June 11, 2025 and listed below. The project was identified as your project: Wastewater 2025 .

The analyses were conducted utilizing appropriate EPA, Standard Methods, and ASTM methods as detailed in the data summary tables.

All samples were received in proper condition meeting the customary acceptance requirements for environmental samples except those indicated under the Sample and Analysis Qualifiers section of this report.

All analyses met the method and laboratory standard operating procedure requirements except as indicated by any data flags, the meaning of which are explained in the Sample and Data Qualifiers Relating to This Work Order section of this report and case narrative if applicable.

Please contact Client Services at 203-270-9973 with any questions regarding this report.

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| [TOC_3]Wet Chemistry Parameters[TOC] | Results | | Units | Analyst | | Result | Analyzed | | Parameter | Date/Time | | Qualifier | Prepared | | - | Date/Time | | - | Reference Method | | - | MCL | | - | RL | | - | TCD | | - | 06/12/2025 11:59 | | - | 06/12/2025 11:59 | | - | SM 4500-NH3 D | | - | Certifications: |

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| Phoenix Environmental Labs, Inc. | Results | | Analysis Conducted by: | Analyst | | [TOC_3]Colilert-18[TOC] | Analyzed | | Units | Date/Time | | Result | Prepared | | Parameter | Date/Time | | Qualifier | Reference Method | | <10 | MCL | | Fecal Coliforms MPN | RL | | MPN/100 | - | | mls | Certifications: | | - | Colilert-18 | | - | 06/11/2025 16:30 | | - | 06/11/2025 09:05 | | - | PHO | | - | 10.00 |

| [TOC_3]Wet Chemistry Parameters[TOC] | Results | | Units | Analyst | | Result | Analyzed | | Parameter | Date/Time | | Qualifier | Prepared | | mg/L | Date/Time | | Ammonia Nitrogen as N | Reference Method | | 26.0 | MCL | | mg/L | RL | | Total Kjeldahl Nitrogen | TCD | | 31.5 | 06/12/2025 11:59 | | - | 06/12/2025 11:59 | | - | SM 4500-NH3 D | | - | Certifications: |

Analysis Conducted by: Phoenix Environmental Labs, Inc.

Results

|Parameter|Result|Units|Qualifier|RL|MCL|Reference Method|Prepared Date/Time|Analyzed Date/Time|Analyst| |---|---|---|---|---|---|---|---|---|---| |Carbonaceous BOD|130|mg/L||46.00|-|SM5210B-16|06/11/2025 15:00|06/11/2025 15:00|PHO| |||||||Certifications:||||

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| [TOC_3]Miscellaneous Physical Parameters[TOC] | Results | | Units | Analyst | | Result | Analyzed | | Parameter | Date/Time | | Qualifier | Prepared | | - | Date/Time | | - | Reference Method | | - | MCL | | - | RL | | - | SMM | | - | 06/12/2025 06:19 | | - | 06/12/2025 13:20 | | - | SM 2540D-2015 | | - | Certifications: |

| [TOC_3]Wet Chemistry Parameters[TOC] | - | Results | | Units | - | Analyst | | Result | - | Analyzed | | Parameter | - | Date/Time | | Qualifier | - | Prepared | | - | - | Date/Time | | - | - | Reference Method | | - | - | MCL | | - | - | RL | | - | - | TCD | | - | - | 06/12/2025 11:59 | | - | - | 06/12/2025 11:59 | | - | - | SM 4500-NH3 D | | - | - | Certifications: |

Analysis Conducted by: Phoenix Environmental Labs, Inc.

| [TOC_3]SM5210B-16[TOC] | Results | | Units | Analyst | | Result | Analyzed | | Parameter | Date/Time | | Qualifier | Prepared | | - | Date/Time | | - | Reference Method | | - | MCL |

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| [TOC_3]Miscellaneous Physical Parameters[TOC] | Results | | Units | Analyst | | Result | Analyzed | | Parameter | Date/Time | | Qualifier | Prepared | | - | Date/Time | | - | Reference Method | | - | MCL | | - | RL | | - | SMM | | - | 06/12/2025 06:19 | | - | 06/12/2025 13:20 | | - | SM 2540D-2015 | | - | Certifications: |

Analysis Conducted by: Phoenix Environmental Labs, Inc.

| [TOC_3]Colilert-18[TOC] | Results | | Units | Analyst | | Result | Analyzed | | Parameter | Date/Time | | Qualifier | Prepared | | - | Date/Time | | - | Reference Method | | - | MCL |

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Definitions and Other Information

Z-01 mg residue is less than 2.5mg

<10 <10

• < 4.0 < 4.0

Analyte is not certified or the state of the samples origination does not offer certification for the Analyte.

MCL The Maximum Contaminant Level (MCL) is the maximum concentration of a chemical that is allowed in public drinking water systems. The MCL is established by the U.S. Environmental Protection Agency (EPA). Some states have MCLs that are equal to or less than the Federally established MCL. The listed MCL value reflects the MCL established by the State where the sample was taken.

General Notes for N5F0331

1. The RLs and MDLs (Reporting Limit and Method Detection Limit respectively) reported are adjusted for any dilution necessary due to the levels of target and/or non-target analytes and matrix interference. The RL(REPORTING LIMIT) is based upon the lowest standard utilized for the calibration where applicable.

2. Samples are retained for a period of thirty days after submittal of report, unless other arrangements are made.

3. York's liability for the above data is limited to the dollar value paid to York for the referenced project.

4. This report shall not be reproduced without the written approval of York Analytical Laboratories, Inc.

5. All analyses conducted met method or Laboratory SOP requirements. See the Sample and Data Qualifiers Section for further information.

6. It is noted that no analyses reported herein were subcontracted to another laboratory, unless noted in the report.

7. This report reflects results that relate only to the samples submitted on the attached chain-of-custody form(s) received by York.

Approved By:

Cassie Mosher Chemistry Director Phil Murphy Interim Microbiology Director

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Date: July 03, 2025

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Revision Description:

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This report was revised to correct sample -01 TKN.

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