Document 15yjogj6R20emr0MnnOdw5vOZ

Report Prepared by: Report Approved by: NPDES Compliance Sampling Inspection Report Palo Seco Power Plant Levittown, Puerto Rico PR0001031 September 12-13, 2022 ROBERT Digitally signed by ROBERT MORRELL _M_O__R_R_E__L_L___D1_3a:t_0e7:_:2002_2-2_0.41_'10.0_0'3_____________ Robert Morrell, Geologist Monitoring Operations Section Date: ________________ ________________________________ PHILIP COCUZZA Digitally signed by PHILIP COCUZZA Date: 2022.11.01 14:09:42 -04'00' Phil Cocuzza, Chief Monitoring Operations Section Date: ________________ Palo Seco Power Plant PR0001031 Inspection Date: September 12-13, 2022 Page 2 of 13 Palo Seco Power Plant PR0001031 Inspection Date: September 12-13, 2022 1.0 OBJECTIVE On September 12-13, 2022, at the request of the Caribbean Environmental Protection Division, a National Pollutant Discharge Elimination System (NPDES) Compliance Sampling Inspection (CSI) was conducted at the Palo Seco Power Plant in Levittown, Puerto Rico. The objective of the CSI was to gather information necessary to determine compliance with the requirements and limitations of NPDES Permit No. PR0001031, specifically Outfalls 001C and 001-C1. 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, 848-229-5054 Jaime Lopez, Senior Enforcement Officer / Physical Scientist Lopez.jaime@epa.gov, 787-390-3403 Jose Rivera, Team Leader, Clean Water Act Team Rivera.jose@epa.gov, 787-402-0987 Puerto Rico Electric Power Authority Indira Mohip Colon, Environmental Protection and QA Division Head Indira.mohip@prepa.com, 939-227-5574 Yvonne Roman Sandor, Program Officer, Environmental Protection Division Yvonne.roman@prepa.com Abraham Rivera, Mechanical Supervisor and NPDES Compliance Officer Abraham.rivera@prepa.com Luis E. Carrillo, Senior Chemical Supervisor Luis.carrillo@prepa.com, 787-521-7029 3.0 FACILITY DESCRIPTION 3.1 General Information The Palo Seco Power Plant is located at km. 3.8 on State Road No. 165 in Levittown, Puerto Rico. The facility, which is owned and operated by the Puerto Rico Electric Power Authority (PREPA), began operations in 1960. The facility is engaged in the generation, transmission, and distribution of electricity and is categorized as Standard Industrial Classification (SIC) 4911. The Palo Seco Power Plant employs 120 personnel and operates 24 hours per day, 7 days per week. Page 3 of 13 Palo Seco Power Plant PR0001031 3.2 Process Information Inspection Date: September 12-13, 2022 The Palo Seco Power Plant consists of four oil-fired units and six gas turbines. Units 1 and 2 each have a capacity of 100 megawatts (MW). Units 3 and 4 each have a capacity of 200 MW. Each gas turbine has a capacity of 22 MW. Process water and potable water are provided by a municipal water supply and an on-site desalinization plant. A seawater intake provides non-contact cooling water. Industrial wastewater is conveyed to the wastewater treatment plant. Industrial wastewater consists of boiler wash water, ion exchange wastes, and air preheater cleanings. The wastewater flows into a collection basin and is pumped to Equalization Tank No. 2, where the pH is adjusted. The sludge from Equalization Tank No. 2 is pumped to the South Pond. The wastewater then flows into Equalization Tank No. 1. The wastewater is directed to one of two Nautilus units, where a polymer is added. Sediment from the Nautilus units is pumped to the South Pond. The wastewater then flows into a collection sump, where the pH is adjusted again. The wastewater is pumped through the gravel filters and is conveyed to a post treatment tank. The treated wastewater is then batch-discharged through internal Outfall 001-C1. The treated wastewater from Outfall 001-C1 combines with storm water runoff, equipment drains, and boiler blowdown. The combined flow is discharged through Outfall 001C to the old Bayamon River Bed. 3.3 Facility Self-Monitoring Information Samples are collected and analyzed by Environmental Quality Laboratories in San Juan, Puerto Rico. Flow is measured continuously with a V-notch weir and ultrasonic meter. 4.0 EPA SAMPLING/INSPECTION ACTIVITIES 4.1 Sampling Activities On the first day of the sampling inspection, September 12, 2022, there was no discharge at internal Outfall 001-C1, as the post treatment tank was not full. The batch discharge was scheduled for the following day, September 13, 2022. There was also no stormwater runoff observed at Outfall 002. As a result, there were no samples collected on September 12, 2022. On September 13, 2022, an automatic composite sampler was set up at the discharge location for Outfall 001C. The sampler was programmed to collect an aliquot of the effluent wastewater every 15 minutes for 6 hours. The composite sample container was packed in ice. After 6 hours, the batch discharge from the wastewater treatment plant was completed and the automatic sampler was shut off. The composite sample was collected for the analyses of total suspended solids (TSS) and 5-day biochemical oxygen demand (BOD5). A grab sample was collected at Outfall 001C using a rod and clamp. This grab sample was analyzed for metals (arsenic, cadmium, copper, mercury, nickel, silver, and thallium), color, free cyanide, oil and grease, pentachlorophenol, PCB's, sulfates, sulfide, turbidity, nitrate + Page 4 of 13 Palo Seco Power Plant PR0001031 Inspection Date: September 12-13, 2022 nitrite, and ammonia. Dissolved oxygen, pH, settleable solids, temperature, and total residual chlorine were analyzed in the field and recorded in the field notebook. Flow measurement data were provided by facility personnel. A manual composite sample was collected at Outfall 001-C1. Four aliquots were collected from a tap on the discharge line during the batch discharge. This composite sample was analyzed for TSS and metals (copper and iron). A grab sample was collected at Outfall 001-C1 by directly filling the sample containers from a tap on the discharge pipe. This grab sample was analyzed for oil and grease, and metals (chromium and zinc). The pH was analyzed in the field and recorded in the field notebook. The flow measurement was provided by facility personnel. All sample containers, preservation techniques and holding times were in accordance with US EPA requirements specified in 40 CFR Part 136. Split samples were collected and given to the facility representative. 4.2 Inspection Activities A walk-through inspection of Outfall 001C, Outfall 001-C1, and Outfall 002 was conducted on September 12, 2022. There was no flow at Outfall 001C and Outfall 002. There was minimal flow at Outfall 001C. On September 13, 2022, the batch discharge of the wastewater treatment plant effluent was started and samples were collected at Outfall 001C and Outfall 001-C1. 4.3 Deviations and/or Environmental Conditions Samples were not collected at Outfall 002 because there was no stormwater runoff. 5.0 ANALYTICAL RESULTS Palo Seco Power Plant Outfall 001-C1 Parameter Flow TSS TSS Iron Iron Copper Copper Chromium Zinc Oil and Grease pH Units MGD mg/l kg/day mg/l kg/day mg/l kg/day mg/l mg/l mg/l su Permit Limit 0.74 -170.4 -1.7 -1.7 0.2 1.0 34.1 6.0 - 9.0 Page 5 of 13 EPA Result 0.155931 Not detected Not detected 0.0652 0.038 Not detected Not detected Not detected Not detected Not detected 7.89 Palo Seco Power Plant PR0001031 Inspection Date: September 12-13, 2022 Palo Seco Power Plant Outfall 001C Parameter TSS BOD5 Arsenic Cadmium Copper Mercury Nickel Silver Thallium Color Free Cyanide Oil and Grease Pentachlorophenol PCB's Sulfates Sulfide Turbidity Nitrate + Nitrite Ammonia Dissolved Oxygen pH Settleable Solids Temperature Total Residual Chlorine Units mg/l mg/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l Pt-Co units ug/l mg/l ug/l ug/l mg/l ug/l NTU mg/l mg/l mg/l su ml/l oC mg/l Permit Limit -30.0 36.0 Monitor only 3.73 0.051 8.28 2.24 0.47 Shall not be altered 1.0 20 Monitor only Monitor only 2800 2 10 Monitor only Monitor only 4.0 minimum 7.3 - 8.5 Shall not cause deposition 32.2 -- L = the reported value may be biased low. EPA Result Not detected 6.47 Not detected Not detected Not detected Not detected Not detected Not detected Not detected 5.00 Not detected Not detected Not detected Not detected 3570 22.6 L 0.773 1.18 L 0.115 6.7 8.11 0.0 31.0 0.02 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: Sulfates (Outfall 001C) Sulfide (Outfall 001C) Page 6 of 13 Palo Seco Power Plant PR0001031 6.2 Inspection Findings Inspection Date: September 12-13, 2022 In addition to the sampling, an inspection of the facility outfalls was conducted as discussed in Section 4.2 above. The following observation was noted at Outfall 001C: The primary flow measuring device was off-center and not located immediately upstream of the weir crest. 7.0 ATTACHMENTS Photographs (#1 - #4) Chain of Custody / Field Data Forms Laboratory Data Report Page 7 of 13 Palo Seco Power Plant PR0001031 Photo #1: Outfall 001-C1. Inspection Date: September 12-13, 2022 Page 8 of 13 Palo Seco Power Plant PR0001031 Inspection Date: September 12-13, 2022 Photo #2: View of sample tap for Outfall 001-C1. Page 9 of 13 Palo Seco Power Plant PR0001031 Photo #3: Outfall 001C. Inspection Date: September 12-13, 2022 Page 10 of 13 Palo Seco Power Plant PR0001031 Inspection Date: September 12-13, 2022 Photo #4: View of Outfall 001C where samples were collected. Page 11 of 13 Palo Seco Power Plant PR0001031 Inspection Date: September 12-13, 2022 Page 12 of 13 Palo Seco Power Plant PR0001031 Inspection Date: September 12-13, 2022 Page 13 of 13 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory 2890 Woodbridge Avenue Edison , New Jersey 08837 732-906-6886 Phone 732-906-6165 Fax October 03, 2022 Philip Cocuzza Monitoring & Assessment Branch LSASD/MAB Edison, NJ 08837 RE: PREPA Palo Seco Power Plant - 2209014 Enclosed are the results of analyses for samples received by the laboratory on 09/14/2022. 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 2209014 and contact the laboratory. Sincerely, John R. Bourbon Chief, LSASD/LB Project Narrative: UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 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. The results for Color are reported as "Apparent Color". The pH of the sample was confrimed between 4 and 8, therfore no pH adjustments necessary prior to Color measurement. Note: For this project, only MS was extracted and analyzed because, the MSD sample bottle was broken during shipment and no extra sample was available to replace. 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: 10/3/2022 Page 1 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Reporting Limit(s): The Laboratory was able to achieve the standard laboratory reporting limits, where applicable, for each analyte requested except for the following analyte(s): NVOA GCMS The reporting level of 5.00 ug/L was raised to 30 ug/L for the following analyte(s): 4,6-Dinitro-2-Methylphenol, Pentachlorophenol for the following samples: 2209014-01 The reporting level of 5.00 ug/L was raised to 50 ug/L for the following analyte(s): 2,4-Dinitrophenol for the following samples: 2209014-01 SUMMARY REPORT FOR SAMPLES Field ID Outfall 001C-Grab Outfall 001-C1-Composite Outfall 001-C1-Grab Outfall 001C-Composite Laboratory ID 2209014-01 2209014-02 2209014-03 2209014-04 Matrix Aqueous Aqueous Aqueous Aqueous Date Sampled 09/13/2022 12:35 09/13/2022 14:10 09/13/2022 10:46 09/13/2022 14:30 Date Received 09/14/2022 10:50 09/14/2022 10:50 09/14/2022 10:50 09/14/2022 10:50 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: 10/3/2022 Page 2 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Analysis 608.3 PCB Aroclors NPDES 625.1 SVOA NPDES Ammonia [As N] Biochemical Oxygen Demand Color Weak Acid Dissociable [Free] Cyanide Mercury Metals ICP TAL NPDES/DW Nitrate + Nitrite [As N] Oil & Grease Sulfate Sulfide Residue, Non-Filterable Turbidity SUMMARY REPORT FOR METHODS Method EPA 608.3 SOP C-91 Rev 4.3 EPA 625.1 SOP C-90 Rev 3.8 EPA 350.1 SOP C-80 Rev 2.7 SM 5210B SOP C-21 Rev 2.7 SM 2120 SOP C-47 Rev 3.6 EPA 335.4 SOP C-28 Rev 2.7 EPA 245.1 SOP C-110 Rev 2.7 EPA 200.7 SOP C-109 Rev 3.6 EPA 353.2 SOP C-79 Rev 3.6 EPA 1664A SOP C-126 Rev 1.6 EPA 300.0 SOP C-94 Rev 2.7 SM 4500 S2 D SOP C-115 Rev 2.7 SM 2540D SOP C-33 Rev 3.7 EPA 180.1 SOP C-81 Rev 2.7 Certification NELAP NELAP NELAP NELAP NELAP NELAP NELAP NELAP NELAP NELAP NELAP NELAP NELAP Matrix Aqueous Aqueous Aqueous Aqueous Aqueous Aqueous Aqueous Aqueous Aqueous Aqueous Aqueous Aqueous 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: 10/3/2022 Page 3 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Analyte Field ID: Outfall 001C-Grab NVOA GCMS Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol Result Qualifier Reporting Limit Units Batch Sample ID: 2209014-01 Date and Time of Analysis* --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 51.0 ug/L B209096 --- U 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 30.6 ug/L B209096 --- U 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 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: 10/3/2022 Page 4 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Analyte Field ID: Outfall 001C-Grab NVOA GCMS 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Result Qualifier Reporting Limit Units Batch Sample ID: 2209014-01 Date and Time of Analysis* --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U J 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U J 5.10 ug/L B209096 --- U L 5.10 ug/L B209096 --- U 5.10 ug/L B209096 --- U 30.6 ug/L B209096 --- U L 5.10 ug/L B209096 --- U 5.10 ug/L B209096 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: 10/3/2022 Page 5 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Analyte Result Qualifier Reporting Limit Units Batch Date and Time of Analysis* Field ID: Outfall 001C-Grab PCB Aroclors GC Aroclor 1016 Aroclor 1221 Aroclor 1232 Aroclor 1242 Aroclor 1248 Aroclor 1254 Aroclor 1260 GC - Sanitary Oil & Grease Metals ICP Arsenic Cadmium Copper Nickel Silver Thallium Mercury CVAA Mercury Sanitary Ammonia [As N] Color Weak Acid Dissociable [Free] Cyanide Nitrate + Nitrite [As N] Sulfate Sulfide Turbidity Field ID: Outfall 001-C1-Composite Metals ICP Copper Sample ID: 2209014-01 --- U 0.031 ug/L B209085 --- U 0.062 ug/L B209085 --- U 0.031 ug/L B209085 --- U 0.031 ug/L B209085 --- U 0.031 ug/L B209085 --- U 0.031 ug/L B209085 --- U 0.031 ug/L B209085 --- U 6.50 mg/L B209121 --- U 8.00 ug/L B209117 --- U 3.00 ug/L B209117 --- U 10.0 ug/L B209117 --- U 20.0 ug/L B209117 --- U 5.00 ug/L B209117 --- U J 20.0 ug/L B209117 --- U 0.050 ug/L B209111 0.115 0.100 mg/L B209079 5.00 5.00 Color B209078 09/14/2022 11:55 Units --- U 10.0 ug/L B209088 1.18 L 0.0500 mg/L B209114 3570 100 mg/L B209109 0.0226 L 0.0100 mg/L B209089 0.773 0.100 NTU B209081 09/14/2022 13:50 Sample ID: 2209014-02 --- U 10.0 ug/L B209117 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: 10/3/2022 Page 6 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Analyte Field ID: Outfall 001-C1-Composite Metals ICP Iron Sanitary Total Suspended Solids Field ID: Outfall 001-C1-Grab GC - Sanitary Oil & Grease Metals ICP Chromium Zinc Field ID: Outfall 001C-Composite Sanitary Biochemical Oxygen Demand Total Suspended Solids Result Qualifier Reporting Limit Units Batch Sample ID: 2209014-02 Date and Time of Analysis* 65.2 50.0 ug/L B209117 --- U 10.0 mg/L B209083 Sample ID: 2209014-03 --- U 6.00 mg/L B209121 --- U 5.00 ug/L B209117 --- U 20.0 ug/L B209117 Sample ID: 2209014-04 6.47 2.00 mg/L B209080 09/20/2022 08:10 --- U 10.0 mg/L B209083 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: 10/3/2022 Page 7 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Batch B209096 Blank (B209096-BLK1) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/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: 10/3/2022 Page 8 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Batch B209096 Blank (B209096-BLK1) Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 LCS (B209096-BS1) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L --- U 5.00 ug/L 41.6 ug/L 50.00 ND ug/L 50.00 37.7 ug/L 50.00 37.0 ug/L 50.00 37.6 ug/L 50.00 61.9 ug/L 50.00 44.4 ug/L 50.00 37.7 5.00 ug/L 50.00 37.4 5.00 ug/L 50.00 43.9 5.00 ug/L 50.00 38.8 5.00 ug/L 50.00 48.2 5.00 ug/L 50.00 51.2 5.00 ug/L 50.00 47.8 5.00 ug/L 50.00 83.2 60-140 34.9 60-140 75.4 60-140 74.1 60-140 75.2 60-140 124 60-140 88.7 60-140 75.5 47-145 74.9 33-145 87.9 27-133 77.5 33-143 96.4 17-163 102 24-159 95.5 35-219 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: 10/3/2022 Page 9 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD Batch B209096 LCS (B209096-BS1) Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene 48.0 5.00 ug/L 50.00 39.2 5.00 ug/L 50.00 49.0 5.00 ug/L 50.00 48.0 5.00 ug/L 50.00 42.3 5.00 ug/L 50.00 52.2 5.00 ug/L 50.00 35.9 5.00 ug/L 50.00 44.1 5.00 ug/L 50.00 32.3 5.00 ug/L 50.00 41.1 5.00 ug/L 50.00 41.7 5.00 ug/L 50.00 44.7 5.00 ug/L 50.00 48.0 5.00 ug/L 50.00 42.7 5.00 ug/L 50.00 46.5 5.00 ug/L 50.00 35.4 5.00 ug/L 50.00 42.4 5.00 ug/L 50.00 43.8 5.00 ug/L 50.00 48.3 5.00 ug/L 50.00 57.6 5.00 ug/L 50.00 42.8 5.00 ug/L 50.00 40.8 5.00 ug/L 50.00 41.3 5.00 ug/L 50.00 21.4 5.00 ug/L 50.00 39.0 5.00 ug/L 50.00 41.9 5.00 ug/L 50.00 36.0 5.00 ug/L 50.00 46.1 5.00 ug/L 50.00 41.2 5.00 ug/L 50.00 42.0 5.00 ug/L 50.00 27.8 5.00 ug/L 50.00 9.04 5.00 ug/L 50.00 41.1 5.00 ug/L 50.00 49.4 5.00 ug/L 50.00 43.2 5.00 ug/L 50.00 95.9 11-162 78.4 17-168 98.0 33-227 96.0 26-137 84.6 59-121 104 39-171 71.8 21-133 88.2 54-120 64.7 44-142 82.3 37-144 83.4 39-135 89.4 32-120 95.9 39-139 85.4 50-158 93.0 21-191 70.7 60-120 84.8 23-134 87.6 29-182 96.5 38-262 115 17-181 85.6 53-127 81.7 22-147 82.6 25-158 42.8 9-132 77.9 33-184 83.8 12-158 72.1 36-166 92.2 8-158 82.3 38-152 84.0 60-115 55.5 31-114 18.1 28-120 82.1 1-120 98.8 4-146 86.4 35-152 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: 10/3/2022 RPD Limit Page 10 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Batch B209096 LCS (B209096-BS1) Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 LCS Dup (B209096-BSD1) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 29.5 5.00 ug/L 50.00 29.0 5.00 ug/L 50.00 30.8 5.00 ug/L 50.00 42.0 5.00 ug/L 50.00 42.7 5.00 ug/L 50.00 28.9 5.00 ug/L 50.00 39.2 5.00 ug/L 50.00 49.1 5.00 ug/L 50.00 45.1 5.00 ug/L 50.00 19.2 5.00 ug/L 50.00 49.1 5.00 ug/L 50.00 43.6 ug/L 50.00 17.9 ug/L 50.00 34.3 ug/L 50.00 31.5 ug/L 50.00 38.6 ug/L 50.00 56.4 ug/L 50.00 36.3 ug/L 50.00 40.3 5.00 ug/L 50.00 39.6 5.00 ug/L 50.00 47.4 5.00 ug/L 50.00 42.7 5.00 ug/L 50.00 53.0 5.00 ug/L 50.00 56.1 5.00 ug/L 50.00 53.6 5.00 ug/L 50.00 53.3 5.00 ug/L 50.00 42.8 5.00 ug/L 50.00 54.9 5.00 ug/L 50.00 53.1 5.00 ug/L 50.00 44.4 5.00 ug/L 50.00 57.9 5.00 ug/L 50.00 36.9 5.00 ug/L 50.00 48.4 5.00 ug/L 50.00 58.9 24-120 58.0 15-76 61.6 40-120 84.0 21-196 85.4 35-180 57.7 17-127 78.4 43-230 98.2 79-139 90.3 14-176 38.4 5-120 98.1 52-120 87.2 60-140 35.8 60-140 68.7 60-140 62.9 60-140 77.2 60-140 113 60-140 72.6 60-140 80.5 47-145 6.46 30 79.2 33-145 5.68 30 94.9 27-133 7.66 30 85.3 33-143 9.58 30 106 17-163 9.53 30 112 24-159 9.06 30 107 35-219 11.6 30 107 11-162 10.5 30 85.7 17-168 8.80 30 110 33-227 11.4 30 106 26-137 10.0 30 88.8 59-121 4.94 30 116 39-171 10.3 30 73.8 21-133 2.77 30 96.8 54-120 9.30 30 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: 10/3/2022 Page 11 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits Batch B209096 LCS Dup (B209096-BSD1) 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine 33.3 5.00 ug/L 50.00 43.8 5.00 ug/L 50.00 43.1 5.00 ug/L 50.00 40.9 5.00 ug/L 50.00 53.6 5.00 ug/L 50.00 47.4 5.00 ug/L 50.00 53.3 5.00 ug/L 50.00 37.3 5.00 ug/L 50.00 42.1 5.00 ug/L 50.00 44.8 5.00 ug/L 50.00 52.0 5.00 ug/L 50.00 65.9 5.00 ug/L 50.00 46.5 5.00 ug/L 50.00 43.4 5.00 ug/L 50.00 44.3 5.00 ug/L 50.00 23.9 5.00 ug/L 50.00 39.8 5.00 ug/L 50.00 41.6 5.00 ug/L 50.00 35.2 5.00 ug/L 50.00 51.6 5.00 ug/L 50.00 49.4 5.00 ug/L 50.00 44.5 5.00 ug/L 50.00 30.6 5.00 ug/L 50.00 10.8 5.00 ug/L 50.00 46.1 5.00 ug/L 50.00 55.2 5.00 ug/L 50.00 47.9 5.00 ug/L 50.00 29.8 5.00 ug/L 50.00 30.3 5.00 ug/L 50.00 31.4 5.00 ug/L 50.00 44.1 5.00 ug/L 50.00 43.7 5.00 ug/L 50.00 28.1 5.00 ug/L 50.00 40.4 5.00 ug/L 50.00 52.6 5.00 ug/L 50.00 66.6 44-142 87.5 37-144 86.3 39-135 81.7 32-120 107 39-139 94.8 50-158 107 21-191 74.7 60-120 84.2 23-134 89.5 29-182 104 38-262 132 17-181 93.1 53-127 86.9 22-147 88.6 25-158 47.8 9-132 79.7 33-184 83.1 12-158 70.4 36-166 103 8-158 98.8 38-152 89.0 60-115 61.2 31-114 21.6 28-120 92.2 1-120 110 4-146 95.7 35-152 59.7 24-120 60.6 15-76 62.7 40-120 88.2 21-196 87.4 35-180 56.3 17-127 80.8 43-230 105 79-139 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: 10/3/2022 RPD 2.90 6.19 3.35 8.93 11.2 10.4 13.7 5.48 0.615 2.21 7.38 13.3 8.33 6.12 6.92 11.0 2.18 0.815 2.39 11.4 18.2 5.78 9.70 17.7 11.6 11.1 10.2 1.21 4.38 1.90 4.81 2.31 2.53 3.12 6.90 RPD Limit 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 Page 12 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Batch B209096 LCS Dup (B209096-BSD1) Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 Matrix Spike (B209096-MS1) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 51.4 5.00 ug/L 50.00 19.1 5.00 ug/L 50.00 54.3 5.00 ug/L 50.00 43.2 ug/L 50.00 17.4 ug/L 50.00 35.4 ug/L 50.00 33.3 ug/L 50.00 40.7 ug/L 50.00 61.5 ug/L 50.00 39.1 ug/L 50.00 103 14-176 13.0 30 38.2 5-120 0.574 30 109 52-120 10.2 30 86.5 60-140 34.9 60-140 70.8 60-140 66.6 60-140 81.3 60-140 123 60-140 78.3 60-140 Source: 2209014-01 41.5 5.00 ug/L 42.8 5.00 ug/L 47.4 5.00 ug/L 40.7 5.00 ug/L 53.2 5.00 ug/L 52.7 5.00 ug/L 51.1 5.00 ug/L 50.0 5.00 ug/L 41.2 5.00 ug/L 53.7 5.00 ug/L 49.1 5.00 ug/L 50.8 5.00 ug/L 56.7 5.00 ug/L 39.2 5.00 ug/L 49.4 5.00 ug/L 38.4 5.00 ug/L 46.2 5.00 ug/L 44.2 5.00 ug/L 43.6 5.00 ug/L 55.9 5.00 ug/L 46.0 5.00 ug/L 58.5 5.00 ug/L 40.8 5.00 ug/L 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 83.0 47-145 85.5 33-145 94.9 27-133 81.5 33-143 106 17-163 105 24-159 102 35-219 100 11-162 82.4 17-168 107 33-227 98.2 26-137 102 59-121 113 39-171 78.4 21-133 98.9 54-120 76.9 44-142 92.4 37-144 88.4 39-135 87.2 32-120 112 39-139 92.0 50-158 117 21-191 81.6 60-120 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: 10/3/2022 Page 13 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD Batch B209096 Matrix Spike (B209096-MS1) 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Source: 2209014-01 38.8 5.00 ug/L 45.8 5.00 ug/L 42.3 5.00 ug/L 64.2 5.00 ug/L 52.7 5.00 ug/L 44.0 5.00 ug/L 52.5 5.00 ug/L 22.0 5.00 ug/L 41.8 5.00 ug/L 40.1 5.00 ug/L 38.8 5.00 ug/L 50.1 5.00 ug/L 49.5 5.00 ug/L 51.0 5.00 ug/L 40.4 5.00 ug/L 19.2 5.00 ug/L 48.3 5.00 ug/L 54.2 5.00 ug/L 52.4 5.00 ug/L 36.0 5.00 ug/L 28.6 5.00 ug/L 34.9 5.00 ug/L 41.5 5.00 ug/L 43.9 5.00 ug/L 21.4 5.00 ug/L 44.0 5.00 ug/L 48.4 5.00 ug/L 52.8 5.00 ug/L 18.7 5.00 ug/L 49.2 5.00 ug/L 40.8 ug/L 17.9 ug/L 40.1 ug/L 38.0 ug/L 44.1 ug/L 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 50.00 50.00 50.00 50.00 77.6 23-134 91.6 29-182 84.5 38-262 128 17-181 105 53-127 88.0 22-147 105 25-158 44.0 9-132 83.5 33-184 80.2 12-158 77.7 36-166 100 8-158 99.0 38-152 102 61-106 80.9 31-114 38.3 28-120 96.6 1-120 108 4-146 105 35-152 72.1 24-120 57.1 15-76 69.8 40-120 83.1 21-196 87.8 35-180 42.8 17-127 87.9 43-230 96.7 79-139 106 14-176 37.3 5-120 98.5 52-120 81.5 60-140 35.9 60-140 80.1 60-140 76.0 60-140 88.2 60-140 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: 10/3/2022 RPD Limit Page 14 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Batch B209096 Matrix Spike (B209096-MS1) Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 Matrix Spike (B209096-MS2) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD Source: 2209014-01 65.8 ug/L 38.5 ug/L Source: 2209015-02 39.0 5.00 ug/L 39.4 5.00 ug/L 43.9 5.00 ug/L 40.0 5.00 ug/L 54.2 5.00 ug/L 52.0 5.00 ug/L 50.6 5.00 ug/L 49.8 5.00 ug/L 40.8 5.00 ug/L 52.9 5.00 ug/L 49.1 5.00 ug/L 43.6 5.00 ug/L 55.8 5.00 ug/L 37.8 5.00 ug/L 45.2 5.00 ug/L 39.8 5.00 ug/L 42.8 5.00 ug/L 42.5 5.00 ug/L 37.1 5.00 ug/L 49.2 5.00 ug/L 43.0 5.00 ug/L 66.1 5.00 ug/L 38.8 5.00 ug/L 39.0 5.00 ug/L 44.4 5.00 ug/L 44.4 5.00 ug/L 62.1 5.00 ug/L 45.1 5.00 ug/L 41.8 5.00 ug/L 44.8 5.00 ug/L 24.6 5.00 ug/L 50.00 50.00 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 132 60-140 76.9 60-140 78.0 47-145 78.8 33-145 87.7 27-133 80.0 33-143 108 17-163 104 24-159 101 35-219 99.7 11-162 81.5 17-168 106 33-227 98.2 26-137 87.1 59-121 112 39-171 75.5 21-133 90.5 54-120 79.6 44-142 85.6 37-144 84.9 39-135 74.2 32-120 98.5 39-139 86.0 50-158 132 21-191 77.7 60-120 78.0 23-134 88.8 29-182 88.8 38-262 124 17-181 90.2 53-127 83.5 22-147 89.6 25-158 49.2 9-132 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: 10/3/2022 RPD Limit Page 15 of 32 Analyte Batch B209096 Matrix Spike (B209096-MS2) Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit Source: 2209015-02 38.0 5.00 ug/L 38.2 5.00 ug/L 36.4 5.00 ug/L 51.4 5.00 ug/L 66.1 5.00 ug/L 43.8 5.00 ug/L 43.9 5.00 ug/L 38.4 5.00 ug/L 49.2 5.00 ug/L 55.8 5.00 ug/L 45.0 5.00 ug/L 40.7 5.00 ug/L 40.4 5.00 ug/L 40.6 5.00 ug/L 38.1 5.00 ug/L 41.3 5.00 ug/L 24.6 5.00 ug/L 39.8 5.00 ug/L 42.5 5.00 ug/L 48.3 5.00 ug/L 18.8 5.00 ug/L 50.0 5.00 ug/L 37.6 ug/L 18.0 ug/L 38.9 ug/L 38.8 ug/L 41.3 ug/L 59.9 ug/L 38.2 ug/L 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 50.00 50.00 50.00 50.00 50.00 50.00 75.9 33-184 76.4 12-158 72.9 36-166 103 8-158 132 38-152 87.7 61-106 87.8 31-114 76.9 28-120 98.3 1-120 112 4-146 90.0 35-152 81.3 24-120 80.9 15-76 81.3 40-120 76.1 21-196 82.5 35-180 49.2 17-127 79.7 43-230 85.1 79-139 96.6 14-176 37.7 5-120 99.9 52-120 75.3 60-140 35.9 60-140 77.7 60-140 77.5 60-140 82.6 60-140 120 60-140 76.5 60-140 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: 10/3/2022 Page 16 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits Batch B209096 Matrix Spike Dup (B209096-MSD1) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Source: 2209014-01 37.8 5.00 ug/L 38.7 5.00 ug/L 44.0 5.00 ug/L 38.9 5.00 ug/L 51.8 5.00 ug/L 51.2 5.00 ug/L 50.0 5.00 ug/L 48.1 5.00 ug/L 39.4 5.00 ug/L 52.2 5.00 ug/L 48.8 5.00 ug/L 44.9 5.00 ug/L 55.1 5.00 ug/L 37.2 5.00 ug/L 45.6 5.00 ug/L 36.7 5.00 ug/L 41.8 5.00 ug/L 41.3 5.00 ug/L 41.6 5.00 ug/L 50.8 5.00 ug/L 42.0 5.00 ug/L 63.9 5.00 ug/L 37.1 5.00 ug/L 39.2 5.00 ug/L 43.6 5.00 ug/L 41.1 5.00 ug/L 60.7 5.00 ug/L 45.5 5.00 ug/L 40.4 5.00 ug/L 44.8 5.00 ug/L 23.0 5.00 ug/L 37.7 5.00 ug/L 39.0 5.00 ug/L 36.1 5.00 ug/L 48.0 5.00 ug/L 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 50.00 ND 75.5 47-145 77.3 33-145 88.1 27-133 77.9 33-143 104 17-163 102 24-159 100 35-219 96.2 11-162 78.9 17-168 104 33-227 97.6 26-137 89.8 59-121 110 39-171 74.4 21-133 91.2 54-120 73.4 44-142 83.6 37-144 82.6 39-135 83.3 32-120 102 39-139 84.0 50-158 128 21-191 74.2 60-120 78.5 23-134 87.2 29-182 82.2 38-262 121 17-181 91.1 53-127 80.7 22-147 89.7 25-158 46.1 9-132 75.4 33-184 78.0 12-158 72.2 36-166 96.0 8-158 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: 10/3/2022 RPD 9.46 10.0 7.41 4.52 2.66 2.85 2.00 3.81 4.37 2.83 0.695 12.4 2.79 5.23 8.12 4.71 10.0 6.71 4.67 9.73 9.16 8.81 9.55 1.18 4.95 2.86 5.59 14.7 8.68 15.8 4.66 10.2 2.73 7.34 4.24 RPD Limit 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 Page 17 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Batch B209096 Matrix Spike Dup (B209096-MSD1) Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 Matrix Spike Dup (B209096-MSD2) Acenaphthene Acenaphthylene Anthracene Benzo(A)Anthracene Benzo(A)Pyrene Benzo(B)Fluoranthene Benzo(G,H,I)Perylene Benzo(K)Fluoranthene Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit Source: 2209014-01 45.8 5.00 ug/L 50.00 ND 91.6 38-152 7.77 24 44.7 5.00 ug/L 50.00 ND 89.4 61-106 13.2 24 33.6 5.00 ug/L 50.00 ND 67.2 31-114 18.4 24 15.2 5.00 ug/L 50.00 ND 30.5 28-120 22.8 24 43.1 5.00 ug/L 50.00 ND 86.2 1-120 11.4 24 52.6 5.00 ug/L 50.00 ND 105 4-146 3.05 24 46.0 5.00 ug/L 50.00 ND 91.9 35-152 13.0 24 35.7 5.00 ug/L 50.00 ND 71.4 24-120 1.03 24 26.1 5.00 ug/L 50.00 ND 52.2 15-76 8.92 24 36.0 5.00 ug/L 50.00 ND 72.1 40-120 3.19 24 37.2 5.00 ug/L 50.00 ND 74.5 21-196 10.9 24 41.7 5.00 ug/L 50.00 ND 83.4 35-180 5.16 24 27.6 5.00 ug/L 50.00 ND 55.3 17-127 25.5 24 39.5 5.00 ug/L 50.00 ND 79.0 43-230 10.8 24 43.1 5.00 ug/L 50.00 ND 86.3 79-139 11.4 24 49.6 5.00 ug/L 50.00 ND 99.2 14-176 6.23 24 19.5 5.00 ug/L 50.00 ND 39.0 5-120 4.45 24 49.7 5.00 ug/L 50.00 ND 99.5 52-120 1.03 24 41.1 ug/L 50.00 82.2 60-140 18.9 ug/L 50.00 37.8 60-140 36.5 ug/L 50.00 73.0 60-140 34.0 ug/L 50.00 68.0 60-140 39.4 ug/L 50.00 78.9 60-140 60.1 ug/L 50.00 120 60-140 36.9 ug/L 50.00 73.7 60-140 Source: 2209015-02 39.8 5.05 ug/L 50.51 ND 78.8 47-145 2.03 24 40.2 5.05 ug/L 50.51 ND 79.5 33-145 1.97 24 44.7 5.05 ug/L 50.51 ND 88.5 27-133 1.85 24 40.3 5.05 ug/L 50.51 ND 79.9 33-143 0.880 24 54.0 5.05 ug/L 50.51 ND 107 17-163 0.332 24 52.7 5.05 ug/L 50.51 ND 104 24-159 1.35 24 51.1 5.05 ug/L 50.51 ND 101 35-219 0.827 24 49.6 5.05 ug/L 50.51 ND 98.2 11-162 0.532 24 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: 10/3/2022 Page 18 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Result Reporting Limit Units Spike Level Source Result %REC %REC Limits Batch B209096 Matrix Spike Dup (B209096-MSD2) Chrysene Dibenzo(A,H)Anthracene Fluoranthene Fluorene Indeno(1,2,3-Cd)Pyrene Naphthalene Phenanthrene 1,2,4-Trichlorobenzene 2,4,6-Trichlorophenol 2,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitrotoluene 2,6-Dinitrotoluene 2,4-Dinitrophenol 2-Chloronaphthalene 2-Chlorophenol 2-Nitrophenol 3,3'- Dichlorobenzidine 4,6-Dinitro-2-Methylphenol 4-Bromophenyl-Phenylether 4-Chloro-3-Methylphenol 4-Chlorophenyl-Phenylether 4-Nitrophenol Bis(-2-Chloroethoxy)Methane Bis(2-Chloroethyl)Ether Bis(2-Chloroisopropyl)Ether Bis(2-Ethylhexyl)Phthalate Butylbenzylphthalate Azobenzene Diethylphthalate Dimethyl Phthalate Di-N-Butyl Phthalate Di-N-Octyl Phthalate Hexachlorobenzene Hexachlorobutadiene Source: 2209015-02 41.2 5.05 ug/L 53.6 5.05 ug/L 50.8 5.05 ug/L 44.5 5.05 ug/L 56.5 5.05 ug/L 38.2 5.05 ug/L 46.4 5.05 ug/L 39.9 5.05 ug/L 43.7 5.05 ug/L 41.9 5.05 ug/L 29.2 5.05 ug/L 51.2 5.05 ug/L 44.6 5.05 ug/L 70.9 5.05 ug/L 39.6 5.05 ug/L 39.0 5.05 ug/L 45.2 5.05 ug/L 43.2 5.05 ug/L 63.6 5.05 ug/L 46.6 5.05 ug/L 42.0 5.05 ug/L 45.9 5.05 ug/L 23.1 5.05 ug/L 38.0 5.05 ug/L 38.8 5.05 ug/L 36.0 5.05 ug/L 50.1 5.05 ug/L 65.9 5.05 ug/L 44.4 5.05 ug/L 44.8 5.05 ug/L 38.8 5.05 ug/L 50.0 5.05 ug/L 54.2 5.05 ug/L 46.8 5.05 ug/L 40.8 5.05 ug/L 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 50.51 ND 81.6 17-168 106 33-227 101 26-137 88.1 59-121 112 39-171 75.6 21-133 91.8 54-120 79.0 44-142 86.6 37-144 83.0 39-135 57.9 32-120 101 39-139 88.2 50-158 140 21-191 78.3 60-120 77.2 23-134 89.4 29-182 85.4 38-262 126 17-181 92.2 53-127 83.2 22-147 90.8 25-158 45.7 9-132 75.2 33-184 76.9 12-158 71.4 36-166 99.2 8-158 130 38-152 88.0 61-106 88.8 31-114 76.9 28-120 98.9 1-120 107 4-146 92.7 35-152 80.7 24-120 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: 10/3/2022 RPD 1.10 1.44 3.38 2.06 1.17 1.14 2.50 0.274 2.14 1.33 23.7 3.99 3.55 7.04 1.83 0.0518 1.66 2.90 2.49 3.18 0.669 2.31 6.42 0.0253 1.55 1.10 2.62 0.289 1.32 2.14 1.01 1.61 2.85 3.94 0.289 RPD Limit 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 Page 19 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 NVOA GCMS - Quality Control Analyte Batch B209096 Matrix Spike Dup (B209096-MSD2) Hexachlorocyclopentadiene Hexachloroethane Isophorone Nitrobenzene N-Nitrosodimethylamine N-Nitroso-Di-N-Propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenol Pyrene Surrogate: 2-Fluoroaniline Surrogate: Phenol-D6 Surrogate: Naphthalene-D8 Surrogate: 1-Fluoronaphthalene Surrogate: 2,4-Dibromophenol Surrogate: Anthracene-D10 Surrogate: Chrysene-D12 Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit Source: 2209015-02 38.6 5.05 ug/L 50.51 ND 76.5 15-76 4.59 24 41.2 5.05 ug/L 50.51 ND 81.7 40-120 1.50 24 38.4 5.05 ug/L 50.51 ND 76.0 21-196 0.900 24 41.6 5.05 ug/L 50.51 ND 82.4 35-180 0.835 24 26.9 5.05 ug/L 50.51 ND 53.2 17-127 8.77 24 40.2 5.05 ug/L 50.51 ND 79.6 43-230 0.854 24 43.5 5.05 ug/L 50.51 ND 86.0 79-139 2.15 24 48.4 5.05 ug/L 50.51 ND 95.8 14-176 0.194 24 17.9 5.05 ug/L 50.51 ND 35.5 5-120 5.01 24 51.2 5.05 ug/L 50.51 ND 101 52-120 2.55 24 39.7 ug/L 50.51 78.6 60-140 17.2 ug/L 50.51 34.1 60-140 39.4 ug/L 50.51 78.0 60-140 39.1 ug/L 50.51 77.4 60-140 42.1 ug/L 50.51 83.4 60-140 61.8 ug/L 50.51 122 60-140 38.8 ug/L 50.51 76.8 60-140 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: 10/3/2022 Page 20 of 32 Analyte Batch B209085 Blank (B209085-BLK1) Aroclor 1016 Aroclor 1221 Aroclor 1232 Aroclor 1242 Aroclor 1248 Aroclor 1254 Aroclor 1260 Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] LCS (B209085-BS1) Aroclor 1016 Aroclor 1016 [2C] Aroclor 1260 Aroclor 1260 [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] LCS Dup (B209085-BSD1) Aroclor 1016 Aroclor 1016 [2C] Aroclor 1260 Aroclor 1260 [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 PCB Aroclors GC - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U --- U --- U --- U --- U --- U --- U ND ND ND ND 0.251 0.276 0.232 0.217 0.0437 0.0433 0.0280 0.0266 0.259 0.281 0.226 0.219 0.0431 0.0439 0.0324 0.0300 0.031 ug/L 0.062 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L ug/L ug/L ug/L ug/L 0.06000 0.06000 0.06000 0.06000 0.031 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L ug/L ug/L ug/L ug/L 0.2500 0.2500 0.2500 0.2500 0.06000 0.06000 0.06000 0.06000 0.031 ug/L 0.031 ug/L 0.031 ug/L 0.031 ug/L ug/L ug/L ug/L ug/L 0.2500 0.2500 0.2500 0.2500 0.06000 0.06000 0.06000 0.06000 54.8 23-101 54.4 23-101 46.6 25-107 43.8 25-107 100 50-140 110 50-140 92.8 8-140 86.8 8-140 72.8 23-101 72.1 23-101 46.6 25-107 44.4 25-107 104 50-140 3.19 36 112 50-140 1.84 36 90.2 8-140 2.77 38 87.6 8-140 0.932 38 71.9 23-101 73.1 23-101 54.0 25-107 50.0 25-107 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: 10/3/2022 Page 21 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 PCB Aroclors GC - Quality Control Analyte Batch B209085 Matrix Spike (B209085-MS1) Aroclor 1016 Aroclor 1016 [2C] Aroclor 1260 Aroclor 1260 [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] Matrix Spike (B209085-MS2) Aroclor 1016 Aroclor 1016 [2C] Aroclor 1260 Aroclor 1260 [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] Matrix Spike Dup (B209085-MSD1) Aroclor 1016 Aroclor 1016 [2C] Aroclor 1260 Aroclor 1260 [2C] Surrogate: TCMX Surrogate: TCMX [2C] Surrogate: DCB Surrogate: DCB [2C] Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit Source: 2209016-06 0.204 0.031 ug/L 0.224 0.031 ug/L 0.264 0.031 ug/L 0.171 0.031 ug/L 0.0361 ug/L 0.0402 ug/L 0.0446 ug/L 0.0437 ug/L 0.2451 ND 0.2451 ND 0.2451 ND 0.2451 ND 0.05882 0.05882 0.05882 0.05882 83.1 50-140 91.6 50-140 108 8-140 69.8 8-140 61.4 23-101 68.3 23-101 75.8 25-107 74.2 25-107 Source: 2209014-01 0.274 0.031 ug/L 0.262 0.031 ug/L 0.250 0.031 ug/L 0.160 0.031 ug/L 0.0324 ug/L 0.0315 ug/L 0.0481 ug/L 0.0387 ug/L 0.2463 ND 0.2463 ND 0.2463 ND 0.2463 ND 0.05911 0.05911 0.05911 0.05911 111 50-140 106 50-140 102 8-140 64.9 8-140 54.8 23-101 53.3 23-101 81.4 25-107 65.5 25-107 Source: 2209016-06 0.271 0.031 ug/L 0.2463 ND 110 50-140 28.4 36 0.254 0.031 ug/L 0.2463 ND 103 50-140 12.2 36 0.218 0.031 ug/L 0.2463 ND 88.6 8-140 18.9 38 0.162 0.031 ug/L 0.2463 ND 65.7 8-140 5.67 38 0.0354 0.0357 0.0438 0.0393 ug/L 0.05911 ug/L 0.05911 ug/L 0.05911 ug/L 0.05911 59.9 23-101 60.4 23-101 74.2 25-107 66.4 25-107 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: 10/3/2022 Page 22 of 32 Analyte Batch B209121 Blank (B209121-BLK1) Oil & Grease LCS (B209121-BS1) Oil & Grease LCS Dup (B209121-BSD1) Oil & Grease Matrix Spike (B209121-MS1) Oil & Grease Matrix Spike (B209121-MS2) Oil & Grease Matrix Spike (B209121-MS3) Oil & Grease Matrix Spike (B209121-MS4) Oil & Grease UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 GC - Sanitary - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U 5.00 mg/L 34.4 5.00 mg/L 40.00 86 78-114 37.3 5.00 mg/L 40.00 93 78-114 8 20 Source: 2209013-02 41.8 5.00 mg/L 51.28 ND 82 78-114 Source: 2209014-01 42.2 5.00 mg/L 51.28 ND 82 78-114 Source: 2209015-04 39.1 5.00 mg/L 45.98 ND 85 78-114 Source: 2209016-02 42.2 5.00 mg/L 48.78 ND 87 78-114 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: 10/3/2022 Page 23 of 32 Analyte Batch B209117 Blank (B209117-BLK1) Antimony Arsenic Beryllium Cadmium Chromium Copper Iron Lead Nickel Selenium Silver Thallium Zinc LCS (B209117-BS1) Antimony Arsenic Beryllium Cadmium Chromium Copper Iron Lead Nickel Selenium Silver Thallium Zinc UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Metals ICP - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U --- U 188 185 190 190 192 190 4770 191 191 183 191 187 188 20.0 ug/L 8.00 ug/L 3.00 ug/L 3.00 ug/L 5.00 ug/L 10.0 ug/L 50.0 ug/L 8.00 ug/L 20.0 ug/L 20.0 ug/L 5.00 ug/L 20.0 ug/L 20.0 ug/L 20.0 ug/L 8.00 ug/L 3.00 ug/L 3.00 ug/L 5.00 ug/L 10.0 ug/L 50.0 ug/L 8.00 ug/L 20.0 ug/L 20.0 ug/L 5.00 ug/L 20.0 ug/L 20.0 ug/L 200.0 200.0 200.0 200.0 200.0 200.0 5000 200.0 200.0 200.0 200.0 200.0 200.0 94.2 85-115 92.7 85-115 95.1 85-115 95.0 85-115 95.9 85-115 94.9 85-115 95.5 85-115 95.6 85-115 95.5 85-115 91.4 85-115 95.4 85-115 93.6 85-115 94.2 85-115 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: 10/3/2022 Page 24 of 32 Analyte Batch B209117 LCS Dup (B209117-BSD1) Antimony Arsenic Beryllium Cadmium Chromium Copper Iron Lead Nickel Selenium Silver Thallium Zinc Matrix Spike (B209117-MS1) Cadmium Lead Nickel Thallium Matrix Spike (B209117-MS2) Arsenic Cadmium Copper Nickel Silver Thallium UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Metals ICP - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 191 186 196 192 194 192 4920 194 192 188 192 190 190 20.0 ug/L 8.00 ug/L 3.00 ug/L 3.00 ug/L 5.00 ug/L 10.0 ug/L 50.0 ug/L 8.00 ug/L 20.0 ug/L 20.0 ug/L 5.00 ug/L 20.0 ug/L 20.0 ug/L 200.0 200.0 200.0 200.0 200.0 200.0 5000 200.0 200.0 200.0 200.0 200.0 200.0 95.3 85-115 1.17 20 93.2 85-115 0.527 20 98.1 85-115 3.12 20 95.8 85-115 0.755 20 96.8 85-115 0.944 20 95.9 85-115 1.05 20 98.5 85-115 3.12 20 96.9 85-115 1.29 20 96.1 85-115 0.668 20 94.1 85-115 2.90 20 96.1 85-115 0.783 20 94.8 85-115 1.37 20 95.0 85-115 0.830 20 Source: 2209013-02 166 3.00 ug/L 175 8.00 ug/L 193 20.0 ug/L 169 20.0 ug/L 200.0 ND 200.0 2.40 200.0 19.0 200.0 7.03 82.8 80-120 86.4 80-120 87.2 80-120 81.1 80-120 Source: 2209014-01 196 8.00 ug/L 178 3.00 ug/L 213 10.0 ug/L 188 20.0 ug/L 201 5.00 ug/L 170 20.0 ug/L 200.0 3.57 200.0 ND 200.0 3.06 200.0 8.85 200.0 ND 200.0 7.07 96.0 80-120 88.8 80-120 105 80-120 89.6 80-120 101 80-120 81.4 80-120 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: 10/3/2022 Page 25 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Metals ICP - Quality Control Analyte Batch B209117 Matrix Spike (B209117-MS3) Copper Zinc Matrix Spike (B209117-MS4) Zinc Matrix Spike Dup (B209117-MSD1) Cadmium Lead Nickel Thallium Matrix Spike Dup (B209117-MSD2) Arsenic Cadmium Copper Nickel Silver Thallium Matrix Spike Dup (B209117-MSD3) Copper Zinc Matrix Spike Dup (B209117-MSD4) Zinc Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit Source: 2209015-01 289 10.0 ug/L 146 20.0 ug/L 200.0 ND 200.0 ND 145 80-120 72.9 80-120 Source: 2209016-01 137 20.0 ug/L 200.0 1.99 67.5 80-120 Source: 2209013-02 184 15.0 ug/L 200.0 ND 91.9 80-120 10.4 10 194 40.0 ug/L 200.0 ND 97.1 80-120 10.3 10 216 100 ug/L 200.0 19.0 98.8 80-120 11.3 10 200 100 ug/L 200.0 ND 99.8 80-120 16.5 10 Source: 2209014-01 187 40.0 ug/L 200.0 ND 93.4 80-120 4.55 10 183 15.0 ug/L 200.0 ND 91.4 80-120 2.84 10 204 50.0 ug/L 200.0 ND 102 80-120 4.63 10 190 100 ug/L 200.0 ND 95.0 80-120 1.08 10 187 25.0 ug/L 200.0 ND 93.4 80-120 7.48 10 198 100 ug/L 200.0 ND 98.8 80-120 15.1 10 Source: 2209015-01 248 50.0 ug/L 200.0 ND 124 80-120 15.4 10 190 100 ug/L 200.0 ND 94.8 80-120 26.2 10 Source: 2209016-01 182 100 ug/L 200.0 ND 91.0 80-120 28.3 10 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: 10/3/2022 Page 26 of 32 Analyte Batch B209111 Blank (B209111-BLK1) Mercury LCS (B209111-BS1) Mercury LCS Dup (B209111-BSD1) Mercury Matrix Spike (B209111-MS2) Mercury Matrix Spike (B209111-MS3) Mercury Matrix Spike (B209111-MS4) Mercury UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Mercury CVAA - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U 0.050 ug/L 0.971 0.050 ug/L 1.000 97.1 85-115 0.931 0.050 ug/L 1.000 93.1 85-115 4.21 20 Source: 2209013-04 0.928 0.050 ug/L 1.000 ND 92.8 80-120 Source: 2209014-01 0.902 0.050 ug/L 1.000 ND 90.2 80-120 Source: 2209016-02 0.990 0.050 ug/L 1.000 0.068 92.2 80-120 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: 10/3/2022 Page 27 of 32 Analyte Batch B209078 Blank (B209078-BLK1) Color LCS (B209078-BS1) Color LCS Dup (B209078-BSD1) Color Duplicate (B209078-DUP1) Color Batch B209079 Blank (B209079-BLK1) Ammonia [As N] LCS (B209079-BS1) Ammonia [As N] LCS Dup (B209079-BSD1) Ammonia [As N] Matrix Spike (B209079-MS1) Ammonia [As N] Batch B209080 Blank (B209080-BLK1) Biochemical Oxygen Demand UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Sanitary - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit <5 5.00 Color Units 40.0 10.0 Color Units 40.00 100 85-115 40.0 10.0 Color Units 40.00 100 85-115 0.00 20 Source: 2209016-01 5.00 5.00 Color Units 5.00 0.00 20 --- U 0.100 mg/L 15.5 0.200 mg/L 14.90 104 90-110 15.6 0.200 mg/L 14.90 105 90-110 0.9 20 Source: 2209014-01 4.96 0.100 mg/L 5.000 0.115 97 90-110 --- U 2.00 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: 10/3/2022 Page 28 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Sanitary - Quality Control Analyte Batch B209080 LCS (B209080-BS1) Biochemical Oxygen Demand LCS (B209080-BS2) Biochemical Oxygen Demand LCS (B209080-BS3) Biochemical Oxygen Demand Duplicate (B209080-DUP1) Biochemical Oxygen Demand Matrix Spike (B209080-MS1) Biochemical Oxygen Demand Matrix Spike Dup (B209080-MSD1) Biochemical Oxygen Demand Batch B209081 LCS (B209081-BS1) Turbidity LCS Dup (B209081-BSD1) Turbidity Duplicate (B209081-DUP1) Turbidity Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 215 mg/L 198.0 108 84.6-115.4 201 mg/L 198.0 101 84.6-115.4 200 mg/L 198.0 101 84.6-115.4 Source: 2209014-04 5.94 2.00 mg/L 6.47 8.46 25 Source: 2209014-04 38.4 2.00 mg/L 31.68 6.47 101 75-125 Source: 2209014-04 31.6 2.00 mg/L 23.76 6.47 106 75-125 19.3 200 19.3 0.100 NTU 19.90 97.0 90-110 19.3 0.100 NTU 19.90 97.0 90-110 0.00 20 Source: 2209014-01 0.735 0.100 NTU 0.773 5.04 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: 10/3/2022 Page 29 of 32 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Sanitary - Quality Control Analyte Batch B209083 Blank (B209083-BLK1) Residue, Non-Filterable LCS (B209083-BS1) Residue, Non-Filterable LCS Dup (B209083-BSD1) Residue, Non-Filterable Duplicate (B209083-DUP1) Residue, Non-Filterable Batch B209088 Blank (B209088-BLK1) Weak Acid Dissociable [Free] Cyanide Blank (B209088-BLK2) Weak Acid Dissociable [Free] Cyanide LCS (B209088-BS1) Cyanide, Total LCS Dup (B209088-BSD1) Cyanide, Total Matrix Spike (B209088-MS1) Cyanide, Total Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit --- U 10.0 mg/L 55.0 10.0 mg/L 55.10 99.8 85-115 55.0 10.0 mg/L 55.10 99.8 85-115 0.00 20 Source: 2209014-04 4.00 10.0 mg/L 7.00 54.5 20 --- U 10.0 ug/L --- U 10.0 ug/L 477 10.0 ug/L 440.0 108 85-115 474 10.0 ug/L 440.0 108 85-115 0.6 20 Source: 2209014-01 484 10.0 ug/L 500.0 0.747 97 80-120 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: 10/3/2022 Page 30 of 32 Analyte Batch B209088 Matrix Spike (B209088-MS2) Cyanide, Total Batch B209089 LCS (B209089-BS1) Sulfide LCS Dup (B209089-BSD1) Sulfide Matrix Spike (B209089-MS1) Sulfide Batch B209109 LCS (B209109-BS1) Sulfate LCS Dup (B209109-BSD1) Sulfate Matrix Spike (B209109-MS1) Sulfate Matrix Spike (B209109-MS2) Sulfate UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Sanitary - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit Source: 2209016-02 482 10.0 ug/L 500.0 0.304 96 80-120 0.580 0.0100 mg/L 0.5720 101 85-115 0.609 0.0100 mg/L 0.5720 107 85-115 5 20 Source: 2209014-01 0.0926 0.0100 mg/L 0.2000 0.0226 35 80-120 12.4 2.00 mg/L 12.50 99 90-110 12.5 2.00 mg/L 12.50 100 90-110 0.8 20 Source: 2209021-07 44.9 1.00 mg/L 20.00 24.6 102 90-110 Source: 2209014-01 3420 100 mg/L 20.00 3570 NR 90-110 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: 10/3/2022 Page 31 of 32 Analyte Batch B209114 LCS (B209114-BS1) Nitrate + Nitrite [As N] LCS Dup (B209114-BSD1) Nitrate + Nitrite [As N] Matrix Spike (B209114-MS1) Nitrate + Nitrite [As N] UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Region 2 Laboratory Final Report Project: PREPA Palo Seco Power Plant - 2209014 Project Number: 2209014 Sanitary - Quality Control Result Reporting Limit Units Spike Source %REC Level Result %REC Limits RPD RPD Limit 16.7 0.500 mg/L 16.50 101 90-110 16.9 0.500 mg/L 16.50 102 90-110 1.19 200 Source: 2209014-01 1.35 0.0500 mg/L 0.2000 1.18 85.0 90-110 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: 10/3/2022 Page 32 of 32