Document o15Kbo4NxmyyoJ2bO2m9Nb8X

Report Prepared by: Report Approved by: NPDES Compliance Sampling Inspection Report Village of Highland Falls Wastewater Treatment Plant Highland Falls, New York NY0022586 February 28 - March 1, 2023 ROBERT Digitally signed by ROBERT MORRELL _M_O__R_R__E_L_L_______D_a_te:_20_2_3.0_4._25_1_5:4_2:_54_-0_4'_00_' _ Robert Morrell, Geologist Monitoring Operations Section Date: ________________ Digitally signed by PHILIP PHILIP COCUZZA COCUZZA _________________D_ate_: 2_0_23_.04_.2_5 _15_:52_:4_2 _-04_'0_0'_ Philip Cocuzza, Supervisor Monitoring Operations Section Date: ________________ Village of Highland Falls WWTP NY0022586 Inspection Date: February 28 - March 1, 2023 1.0 OBJECTIVE On February 28 - March 1, 2023, at the request of the Water Compliance Branch, a National Pollutant Discharge Elimination System (NPDES) Compliance Sampling Inspection (CSI) was conducted at the Village of Highland Falls Wastewater Treatment Plant (WWTP) in Highland Falls, New York. The objective of the CSI was to gather information necessary to determine compliance with the requirements and limitations of SPDES Permit No. NY0022586. 2.0 KEY PARTICIPANTS Listed below are key inspection participants and contact information, grouped by organization. U.S. Environmental Protection Agency Robert Morrell, Geologist, Lead Inspector Morrell.robert@epa.gov, 732-906-6804 Molly Hillenbrand, Life Scientist Hillenbrand.molly@epa.gov, 732-321-4452 Village of Highland Falls Wastewater Treatment Plant John Jones, Chief Operator 845-446-5156 James DiSalvo, Village Trustee jdisalvo@highlandfallsny.org, 845-446-3400 3.0 FACILITY DESCRIPTION 3.1 General Information The Village of Highland Falls Wastewater Treatment Plant is located on Rose Drive in Highland Falls, New York. The current wastewater treatment plant was completed in 1988 to replace the old wastewater treatment plant. The facility is categorized as Standard Industrial Classification (SIC) Code 4952. The plant operates 24 hours per day, 7 days per week. 3.2 Process Information The Village of Highland Falls WWTP has a design capacity of 1.34 million gallons per day (mgd). Average flow for the plant is 800,000 gallons per day (gpd). Most of the influent wastewater is domestic. Influent wastewater is collected at the headworks of the plant and flows through a mechanical bar screen into a grit chamber. Solids from the bar screen and grit chamber are collected in a container and transported to the local landfill for disposal. Page 2 of 7 Village of Highland Falls WWTP NY0022586 Inspection Date: February 28 - March 1, 2023 The influent wastewater flows into a pit and is pumped to one of two primary clarifiers. During the sampling inspection, only one clarifier was in service. Wastewater from the clarifier is pumped to one of eight rotating biological contactors (RBC's). After treatment at the RBC's, the wastewater is conveyed to one of two secondary clarifiers. The clarified wastewater flows into the chlorine contact tank, where chlorine is added during seasonal disinfection from May 15 to October 15. The wastewater flows through a Parshall flume, where a secondary flow monitoring device records the flow continuously. Finally, the wastewater is discharged through Outfall 002 to the Hudson River. Sludge from the primary and secondary clarifiers is pumped to the sludge thickener. The thickened sludge is then pumped to the primary anaerobic digester. Digested sludge is conveyed to the belt filter press for dewatering. The dewatered sludge is shipped to Spectraserve in Kearny, New Jersey. 3.3 Facility Self-Monitoring Information Samples are collected and analyzed on-site for temperature, pH, settleable solids, and total residual chlorine (seasonal from May 15 to October 15). Total suspended solids (TSS) and 5-day biochemical oxygen demand (BOD5) are analyzed by Envirotest in Newburgh, New York. Fecal coliform samples are collected seasonally from May 15 to October 15 and analyzed by Envirotest. Flow is measured continuously at the influent and effluent sampling locations. 4.0 EPA SAMPLING/INSPECTION ACTIVITIES 4.1 Sampling Activities On February 28, 2023, an automatic composite sampler was set up at the effluent sampling location for Outfall 002. The sampler was programmed to collect an aliquot of the effluent wastewater every 15 minutes for 24 hours. The composite sample container was packed in ice. Grab samples were collected at the effluent sampling location for the on-site analysis of pH, temperature, settleable solids, and total residual chlorine. The results were recorded in the field notebook. On March 1, 2023, a 24-hour composite sample was collected from the automatic sampler at the effluent sampling location for Outfall 002. This sample was analyzed for BOD5 and TSS. Flow readings were provided by the facility representative. The 24-hour effluent flow was 805,900 gpd. All sample containers, preservation techniques, and holding times were in accordance with U.S. EPA requirements specified in 40 CFR Part 136. Samples for BOD5 and TSS were placed in a cooler with wet ice and transported to the U.S. EPA Region 2 Laboratory in Edison, New Jersey. Split samples were offered but declined by the facility representative. Page 3 of 7 Village of Highland Falls WWTP NY0022586 Inspection Date: February 28 - March 1, 2023 4.2 Inspection Activities A walk-through inspection of the Village of Highland Falls WWTP was conducted and the inspection findings are listed in Section 6.2. 4.3 Deviations and/or Environmental Conditions During the sampling inspection, one of the primary clarifiers was out of service for maintenance. 5.0 ANALYTICAL RESULTS Village of Highland Falls Wastewater Treatment Plant February 28 - March 1, 2023 Outfall 002 Parameter Flow (mgd) BOD5 (mg/l) ** BOD5 (lbs/day) ** TSS (mg/l) ** TSS (lbs/day) ** Temperature (oC) pH (su) Total Residual Chlorine (mg/l) Settleable Solids (ml/l) 0.8059 21.7 146 46 309 6.0 6.13 0.04 0.2 Effluent Permit Limit 1.35 30 (30-day arithmetic mean) 338 (30-day arithmetic mean) 30 (30-day arithmetic mean) 338 (30-day arithmetic mean) Monitor only 6.0 - 9.0 0.5 - 2.0 (seasonal) 0.3 ** Permit limit is an average; EPA result is for a single sample. 6.0 FINDINGS 6.1 Sampling Result Findings The EPA analytical results obtained during this inspection show the following parameter(s) as being outside of the acceptable limits: TSS (see above table). As noted above, the EPA analytical result is for a single sample. The permit limit is 45 mg/l for a 7-day arithmetic mean and 30 mg/l for a 30-day arithmetic mean. Page 4 of 7 Village of Highland Falls WWTP NY0022586 6.2 Inspection Findings Inspection Date: February 28 - March 1, 2023 In addition to the sampling, an inspection of the facility operations was conducted as discussed in Section 4.2 above. Nothing was observed or noted during the inspection that contravened the requirements of the permit or the applicable regulations. 7.0 ATTACHMENTS Photographs (#1 - #2) EPA Laboratory Data Report Chain of Custody / Field Data Form Page 5 of 7 Village of Highland Falls WWTP NY0022586 Inspection Date: February 28 - March 1, 2023 Photo #1: View of the effluent sampling location for Outfall 002. Page 6 of 7 Village of Highland Falls WWTP NY0022586 Inspection Date: February 28 - March 1, 2023 Photo #2: Another view of the effluent sampling location. Page 7 of 7 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory 2890 Woodbridge Avenue Edison , New Jersey 08837 732-906-6886 Phone 732-906-6165 Fax March 13, 2023 Philip Cocuzza Monitoring & Assessment Branch LSASD/MAB Edison, NJ 08837 RE: Village of Highland Falls WWTP - 2302020 Enclosed are the results of analyses for samples received by the laboratory on 03/01/2023. The signature below reflects the laboratory's approval of the reported results. If you have any questions concerning this report, please refer to Project Number 2302020 and contact the laboratory. Sincerely, John R. Bourbon Chief, LSASD/LB Project Narrative: UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Village of Highland Falls WWTP - 2302020 Project Number: 2302020 The National Environmental Laboratory Accreditation Conference Institute (TNI) is a voluntary environmental laboratory accreditation association of State and Federal agencies. TNI established and promoted a National Environmental Laboratory Accreditation Program (NELAP) that provides a uniform set of standards for the generation of environmental data that are of known and defensible quality. The EPA Region 2 Laboratory is NELAP accredited. The Laboratory tests that are accredited have met all the requirements established under the TNI Standards. Condition Comments None Comment(s): The "Sample Analysis Date and Time" is included in the results section for any analyte with a prescribed holding time of 72 hours or less. Data Qualifier(s): U- The analyte was not detected at or above the Reporting Limit. J- The identification of the analyte is acceptable; the reported value is an estimate. K- The identification of the analyte is acceptable; the reported value may be biased high. L- The identification of the analyte is acceptable; the reported value may be biased low. NJ- There is presumptive evidence that the analyte is present; the analyte is reported as a tentative identification. The reported value is an estimate. U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/13/2023 Page 1 of 6 Reporting Limit(s): UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Village of Highland Falls WWTP - 2302020 Project Number: 2302020 The Laboratory was able to achieve the appropriate limit for each analyte requested. Field ID Outfall 002- 24Hr. Comp. SUMMARY REPORT FOR SAMPLES Laboratory ID 2302020-01 Matrix Aqueous Date Sampled 03/01/2023 10:33 Date Received 03/01/2023 12:55 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/13/2023 Page 2 of 6 Analysis Biochemical Oxygen Demand Residue, Non-Filterable UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Village of Highland Falls WWTP - 2302020 Project Number: 2302020 SUMMARY REPORT FOR METHODS Method SM 5210B SOP C-21 Rev 2.8 SM 2540D SOP C-33 Rev 3.8 Certification NELAP NELAP Matrix Aqueous Aqueous U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/13/2023 Page 3 of 6 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Village of Highland Falls WWTP - 2302020 Project Number: 2302020 Analyte Field ID: Outfall 002- 24Hr. Comp. Sanitary Biochemical Oxygen Demand Total Suspended Solids Result Qualifier Reporting Limit Units Batch Sample ID: 2302020-01 Date and Time of Analysis* 21.7 2.00 mg/L B303006 03/07/2023 07:29 46.0 10.0 mg/L B303010 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/13/2023 Page 4 of 6 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Village of Highland Falls WWTP - 2302020 Project Number: 2302020 Sanitary - Quality Control Analyte Batch B303006 Blank (B303006-BLK1) Biochemical Oxygen Demand LCS (B303006-BS1) Biochemical Oxygen Demand LCS (B303006-BS2) Biochemical Oxygen Demand LCS (B303006-BS3) Biochemical Oxygen Demand Duplicate (B303006-DUP1) Biochemical Oxygen Demand Matrix Spike (B303006-MS1) Biochemical Oxygen Demand Matrix Spike Dup (B303006-MSD1) Biochemical Oxygen Demand Batch B303010 Blank (B303010-BLK1) Residue, Non-Filterable Blank (B303010-BLK2) Residue, Non-Filterable Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U 2.00 mg/L 170 mg/L 198.0 85.7 84.6-115.4 177 mg/L 198.0 89.3 84.6-115.4 187 mg/L 198.0 94.3 84.6-115.4 Source: 2302020-01 19.0 2.00 mg/L 21.7 13.4 25 Source: 2302020-01 494 2.00 mg/L 396.0 21.7 119 75-125 Source: 2302020-01 468 2.00 mg/L 396.0 21.7 113 75-125 5.46 200 --- U 10.0 mg/L --- U 10.0 mg/L U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/13/2023 Page 5 of 6 Analyte Batch B303010 LCS (B303010-BS1) Residue, Non-Filterable LCS Dup (B303010-BSD1) Residue, Non-Filterable Duplicate (B303010-DUP1) Residue, Non-Filterable UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: Village of Highland Falls WWTP - 2302020 Project Number: 2302020 Sanitary - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 55.0 10.0 mg/L 55.10 99.8 85-115 61.0 10.0 mg/L 55.10 111 85-115 10.3 20 Source: 2302020-01 42.0 10.0 mg/L 46.0 9.09 20 U.S.E.P.A Region 2 Laboratory NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted Reported: 3/13/2023 Page 6 of 6