Document opo4aqZjkmGX27mNpg0b1BZg

Finalized Date: Subject: From: Reviewed By: To: Dated as shown on electronic signature(s) Reconnaissance and Sampling Inspection Report Clean Water Act - National Pollutant Discharge Elimination System Bridgeport, CT Digitally signed by Anna Hatke, Inspector ANNA HATKE Date: 2024.12.02 ANNA HATKE Laboratory Services and Applied Science Division (LSASD) 15:39:37 -05'00' Field Services Branch (FSB) Jerome Keefe, Investigations Team Leader LSASD-FSB Elliot Anderson, Inspector Enforcement and Compliance Assurance Division (ECAD) Water Compliance Section 1 CC: Todd Borci, Manager ECAD -Water Compliance Section 1 I. Facility Information A. Facility Name: City of Bridgeport, CT B. Facility Location: Bridgeport, CT C. Facility Contact: Lauren Mappa, P.E. - GM, Lauren.mcbennettmappa@bridgeportct.gov , (203) 332-5605 D. NPDES Permit ID: CTR030017 (MS4) II. Background Information A. Date/Start time of Reconnaissance inspection: 9/24/2024 09:13 B. Weather conditions: Sunny-partly cloudy approx. 60F C. USEPA Representatives: Anna Hatke, Nafisah Ali, Jerry Keefe D. State/Local Representatives: N/A Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection A. Date/Start time of sampling inspection: 10/22/2024 08:14 B. Weather conditions: Sunny, clear, approx. 58F C. USEPA Representatives: Anna Hatke, Nafisah Ali D. State/Local Representatives: N/A E. Federally Enforceable Requirements Investigated: Stormwater discharges and certain non-stormwater discharges from the City of Bridgeport, CT Municipal Separate Storm Sewer Systems (MS4) are authorized by the National Pollutant Discharge Elimination System (NPDES) General Permit for the Discharge of Stormwater from Small MS4 (hereinafter, the Permit), issued by the Environmental Protection Agency (EPA) Region 1. The City obtained coverage under the Permit with NPDES Permit ID CTR030017. F. Pollutants Sampled: Pharmaceuticals and Personal Care Products (PPCPs), Enterococcus, Ammonia (nitrogen), Total Chlorine, and Surfactants III. Disclaimer: Unless otherwise noted, this report describes conditions at the facility/property as observed by EPA inspector(s), and/or through records provided to and/or information reported to EPA inspector(s) by facility representatives and as understood by the inspector(s). This report may not capture all operations or activities ongoing at the time of the inspection. This report does not make final determinations on potential areas of concern. Nothing in this report affects EPA's authorities under federal statutes and regulations to pursue further investigation or action. IV. Type and Purpose of Inspection(s) The purpose of the reconnaissance inspection was to locate stormwater outfalls which discharge into the Long Island Sound, while noting appearance, presence of flow, and access requirements for one or more sampling inspections. The purpose of the compliance sampling inspection was to identify potential illicit connections or illegal discharges within the Bridgeport, CT MS4 that may adversely impact the water quality along the Long Island Sound. Samples were collected from 1 location in accordance with the FSB Investigations Team Stormwater Program Plan. V. Permittee Details The City of Bridgeport is a coastal town that occupies approximately 19.4 square miles in Fairfield County, CT, 16.0 of those square miles being land and 3.4 square miles being water. Bridgeport is located approximately 49 miles southwest of Hartford, CT. The City shares borders with the municipalities of Trumbull to the north, Stratford to the east, and Fairfield to the west. According to the 2020 U.S. Census, the population of Bridgeport, CT was 148,654. VI. 07/23/2024 Reconnaissance Inspection Summary Page 2 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection On September 24th, 2024, EPA Inspectors Anna Hatke, Nafisah Ali and Jerry Keefe conducted an unannounced reconnaissance inspection of the Bridgeport, CT MS4 at the locations described in Section VIII, including locations described under the map of the sample locations. They were not accompanied by any city or state representatives. The inspection started near 104 Seabright Ave, Bridgeport, CT at approximately 09:13. At the time of the inspection, the weather was partly cloudy and approximately 60F. According to the National Weather Service (NWS) for Igor/Sikorsky Memorial Airport, CT, the last precipitation event prior to the inspection occurred on 9/7/2024, with 0.21 inches recorded. There was not precipitation recorded within the 72 hours before the inspection. According to the NWS, in the month (to date of inspection) of September, the area observed 0.25 inches of rain, which is approximately 8.01% of the 30-year normal value of 3.12 inches. According to the US Drought Monitor, as of October 1, 2024, New Haven County is experiencing no drought conditions. VII. 07/24/2024 Sampling Inspection Summary On October 22, 2024, Anna Hatke and Nafisah Ali ("the EPA Inspection Team") conducted an unannounced compliance sampling inspection of the Bridgeport MS4 at the locations described in Section VIII. They were not accompanied by any city or state representatives. The inspection started near 700 Ocean Ave, Bridgeport, CT at approximately 08:14. At the time of the inspection, the weather was sunny and clear and approximately 58 F. According to the National Weather Service (NWS) for Igor/Sikorsky Memorial Airport, CT, the last precipitation event prior to the inspection occurred on 10/7, 2024, with 0.16 inches recorded. There was not precipitation recorded within the 72 hours before the inspection. According to the NWS, in the month (to date of inspection) of October, the area observed 0.16 inches of rain, which is approximately 5.69% of the 30-year normal value of 2.81 inches. According to the US Drought Monitor, as of October 29, 2024, New Haven County is experiencing abnormally dry weather. The sampling locations described in Section VIII were field screened using test kits for ammonia (nitrogen), surfactants, and total chlorine. In-situ measurements for specific conductivity, salinity, and temperature were also measured using a YSI water quality meter and recorded. Field data were recorded on field data sheets. Samples were delivered to and analyzed for enterococcus at the Complete Environmental Testing Inc., 80 Lupes Drive, Stratford, CT 06615, and PPCPs at the EPA New England Regional Laboratory in North Chelmsford, MA. Table 1 below summarizes the sampling and analytical data. VIII. Description of Sampling Locations (in order of collection time) Photographs depicting each sample location are included in Appendix A of this report. Seabright1: One circular concrete outfall approximately 1.5 feet in diameter, located approximately at 104 Seabright Ave. The outfall pipe is located at the northern edge of the beach. Discharge flow was approximately less than 1 gallon per minute ("gpm") into the Long Island Sound. Sample was collected at the mouth of the outfall. No notable odor was detected. Color was clear and turbidity was low. Some organic particulates were observed. Page 3 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection Barnacles were observed growing along the walls of the outfall pipe. A crack in the concrete pipe was observed further up, where the pipe first exits the sand. Beacon1: One circular concrete outfall approximately 3 feet in diameter, located approximately at 2 Seabright Ave and at the base of a rock retaining wall by the coastline. Discharge was categorized as dripping at a various rate of discharge into the Long Island Sound. Sample was collected at the mouth of the outfall. A sour odor was detected. Color was clear-yellow and turbidity was low to medium. Floatables were observed, including some organic particulate matter. The mouth of the outfall was covered in marsh hay There was garbage observed around the outfall on all sides. Note: Not enough flow to collect adequate sample volume for PPCPs, enterococcus analysis, conductivity, salinity, and temperature. Only enough discharge to analyze for ammonia, surfactants, and total chlorine. Seaside1: One circular corrugated plastic outfall approximately 1.5 feet in diameter, located approximately adjacent to Seaside Park, on Sound View Drive, Bridgeport midway down the beach front at low tide. Discharge flow was approximately 1 gallon per minute ("gpm") into the Long Island Sound. Sample was collected at the mouth of the outfall. No notable odor was detected. Color was clear and turbidity was low. The outfall pipe was approximately 50% submerged in beach substrate. No overt floatables were observed. A brownish film was observed collecting immediately downstream of the outfall. Page 4 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection Map of Sample Locations Note: the locations on the map were estimated using Google Earth and are used for display purposes only. Note: Beacon 1: Not enough flow to collect adequate sample volume for PPCPs, enterococcus analysis, conductivity, salinity, and temperature. Only enough discharge to analyze for ammonia, surfactants, and total chlorine. Page 5 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection Table 1: Summary of Sampling and Analytical Data Site ID Seabbright1 Beacon1 Seaside1 Location Sample Date 10/22/2024 10/22/2024 10/22/2024 Sample Time 09:48 10:21 11:56 Coordinates1 (decimal degrees) North West 41.152658 -73.220891 41.151499 -73.221969 41.1597 -73.1979 Salinity, ppt. 25.3 NA 22.4 YSI Meter Temperature, C 17.9 NA 17.8 Field Test Kits (mg/L) Conductivity, ASm/cmmonia Total Chlorine Surfactants 34.13 0.15 0.03 3.0+ NA 35.46 6.0+ 0.0 0.04 0.04 3.0+ 3.0 Bacteria (MPN/100mL) Enterococcus Cotinine 340 NA 17 2.8 NA 1.8 Acetaminophen ND NA ND Paraxanthine 7.0 NA 2.8 PPCPs (ng/L) Atenolol Caffeine 3.1 NA ND 13 NA 9.4 Metoprolol 2.6 NA ND Diphenhydramine 8.1 NA 0.50 Carbamazepine 4.2 NA 0.95 Abbreviations and Notes: 1. The coordinates listed in Table 1 were derived from the map created in Google Earth, therefore the coordinates are estimates of the actual locations. N/A: Not Analyzed ND: Not Detected above Reporting Limit Entero*: Red 1000 col/100ml, Orange 500 col/100ml, Yellow 104-500 col/100ml, Black < 104 col/100ml NH3: Red 6 mg/L, Orange 0.5 mg/L, Yellow 0.25 mg/L, Black < 0.25 mg/L Cl2: Red 1.0 mg/L, Orange 0.3 mg/L, Yellow 0.02 mg/L, Black < 0.02 mg/L Surfactants: Red 1.0 mg/L, Orange 0.5 mg/L, Yellow 0.25 mg/L, Black < 0.25 mg/L (may give false positive at salinity greater than 1 ppt) PPCPs: Red 100x the RL, Orange 10x the RL, Yellow 3x the RL; Black < 3x the RL** * Threshold values are based on single sample maximum for Connecticut's standards for recreational salt water designated for swimming. **See Reporting Limit (RL) values for each compound in attached Laboratory Report for Source Tracking EPA notes while there are currently no numerical standards to compare pharmaceutical results against, it is EPA's experience that acetaminophen is the single best bacterial source tracking compound of those listed above, and any detection of this compound may indicate a source of sanitary sewage. With respect to all of the above compounds, when a sanitary sewage source is present, depending on the type of source, distance from the sample location, and the strength of the source, concentrations of these compounds may range from the low ng/l range up to thousands of ng/L. Page 6 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection IX. Appendix Appendix A: Photograph Log X. Attachments Attachment A: Laboratory Report for PPCPs (Source Tracking) Analysis Attachment B: Laboratory Report for Enterococcus Analysis End of Report Page 7 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection Appendix A Photograph Log Page 8 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection Photo 1: Seabright1 (photo taken 10/22/2024 at approx. 09:48) Outfall located near 104 Seabright Ave, discharging into the Long Island Sound. Sample point is indicated by a red X. Page 9 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection Photo 2: Beacon1 (photo taken 10/22/2024 at approx. 10:21 Outfall located near 2 Seabright Ave, discharging into the Long Island Sound. Sample point is indicated by a red X. (Note1: Time stamp on photo is incorrect) (Note 2: Not enough flow to collect adequate sample volume for PCP, enterococcus analysis, conductivity, salinity, and temperature. Only enough discharge to analyze for ammonia, surfactants, and total chlorine.) Page 10 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection Photo 3: Seaside1 (photo taken 10/22/2024 at approx. 11:56) Outfall located adjacent to Seaside Park on Soundview Drive, discharging into Long Island Sound. Sample point is indicated by a red X. Page 11 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection Attachment A Laboratory Report for Source Tracking Analysis Author: LSASD Laboratory Services Branch Pages: 12 Page 12 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection Attachment B Laboratory Report for Enterococcus Analysis Author: Complete Environmental Pages: 7 Page 13 of 14 Sampling Inspection Date: 10/22/2024 Bridgeport, CT (CTR030017) EPA MS4 Compliance Sampling Inspection End of Report Page 14 of 14 Sampling Inspection Date: 10/22/2024 November 21, 2024 United States Environmental Protection Agency Laboratory Services and Applied Science Division 11 Technology Drive North Chelmsford, MA 01863-2431 Laboratory Report Page 1 of 12 Ana Hatke Nafisah Ali US EPA Region 1 Project Number: 24100036 Project: MS4 Bridgeport, CT Analysis: HPLC/MS/MS Source Tracking Analysis EPA Chemist: Peter Philbrook Date Samples Received by the Laboratory: 10/24/2024 Analytical Procedure: All samples were received and logged in by the laboratory according to the USEPA New England Laboratory SOP for Sample Log-in. Sample preparation and analysis was done following the EPA Region I SOP, LSBSOP-LCMS_STA.3. The SOP is based on an EPA Regional Analytical Method developed at the EPA New England Laboratory. Data were reviewed in accordance with the internal verification procedures described in the EPA New England Quality Manual for NERL. Results relate only to the items tested or to the samples as received by the Laboratory. This analytical report shall not be reproduced except in full, without written approval of the laboratory. If you have any questions please call me at 617-918-8340 . Sincerely, 24100036$STA Qualifiers: RL = Reporting limit ND = Not Detected above Reporting limit NA = Not Applicable due to high sample dilutions or sample interferences NC = Not calculated since analyte concentration is ND. J = Estimated value J1 = Estimated value due to MS recovery outside accceptance criteria J2 = Estimated value due to LFB result outside acceptance criteria J3 = Estimated value due to RPD result outside acceptance criteria J4 = Estimated value due to LCS result outside acceptance criteria E = Estimated value exceeds the calibration range L = Estimated value is below the calibration range B = Analyte is associated with the lab blank or trip blank contamination. Values are qualified when the observed concentration of the contamination in the sample extract is less than 10 times the concentration in the blank. R = No recovery was calculated since the analyte concentration is greater than four times the spike level. P = The confirmation value exceeded 35% difference and is less than 100%. The lower value is reported. C = The identification has been confirmed by GC/MS. A = Suspected Aldol condensation product. N = Tentatively identified compound. Page 2 of 12 24100036$STA U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Bridgeport, CT HPLC/MS/MS Source Tracking Analysis Page 3 of 12 Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis: Dry Weight Prepared: Wet Weight Prepared: Seabright 1 10/22/2024 10/29/2024 11/14/2024 N/A N/A CAS Number 486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4 Compound Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine Concentration ng/L 2.8 ND 7.0 3.1 13 2.6 8.1 4.2 Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH: AC16832 Storm water 500 mL N/A 1 N/A Dilution 1 1 1 1 1 1 1 1 RL ng/L Qualifier 0.40 2.0 2.0 2.0 4.0 2.0 0.40 0.40 Surrogate Compounds Phentermine-D5 Diphenhydramine-D3 Recoveries (%) 0 95 QC Ranges 26 - 133 56 - 113 Comments: There is no surrogate recovery for phentermine D5 as it was not spiked into the sample (due to supply chain issues). 24100036$STA U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Bridgeport, CT HPLC/MS/MS Source Tracking Analysis Page 4 of 12 Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis: Dry Weight Prepared: Wet Weight Prepared: Dup 1 10/22/2024 10/29/2024 11/14/2024 N/A N/A CAS Number 486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4 Compound Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine Concentration ng/L 2.8 ND 4.9 2.9 15 2.1 8.2 3.9 Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH: AC16833 Storm water 500 mL N/A 1 N/A Dilution 1 1 1 1 1 1 1 1 RL ng/L Qualifier 0.40 2.0 2.0 2.0 4.0 2.0 0.40 0.40 Surrogate Compounds Phentermine-D5 Diphenhydramine-D3 Recoveries (%) 0 96 QC Ranges 26 - 133 56 - 113 Comments: There is no surrogate recovery for phentermine D5 as it was not spiked into the sample (due to supply chain issues). 24100036$STA U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Bridgeport, CT HPLC/MS/MS Source Tracking Analysis Page 5 of 12 Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis: Dry Weight Prepared: Wet Weight Prepared: Seaside 1 10/22/2024 10/29/2024 11/14/2024 N/A N/A CAS Number 486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4 Compound Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine Concentration ng/L 1.8 ND 2.8 ND 9.4 ND 0.50 0.95 Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH: AC16834 Storm water 500 mL N/A 1 N/A Dilution 1 1 1 1 1 1 1 1 RL ng/L Qualifier 0.40 2.0 2.0 2.0 4.0 2.0 0.40 0.40 Surrogate Compounds Phentermine-D5 Diphenhydramine-D3 Recoveries (%) 0 98 QC Ranges 26 - 133 56 - 113 Comments: There is no surrogate recovery for phentermine D5 as it was not spiked into the sample (due to supply chain issues). 24100036$STA U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Bridgeport, CT HPLC/MS/MS Source Tracking Analysis Page 6 of 12 Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis: Dry Weight Prepared: Wet Weight Prepared: Dup 2 10/22/2024 10/29/2024 11/14/2024 N/A N/A CAS Number 486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4 Compound Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine Concentration ng/L 1.9 ND 1.2 ND 8.8 ND 0.52 1.0 Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH: AC16835 Storm water 500 mL N/A 1 N/A Dilution 1 1 1 1 1 1 1 1 RL ng/L Qualifier 0.40 2.0 2.0 L 2.0 4.0 2.0 0.40 0.40 Surrogate Compounds Phentermine-D5 Diphenhydramine-D3 Recoveries (%) 0 103 QC Ranges 26 - 133 56 - 113 Comments: There is no surrogate recovery for phentermine D5 as it was not spiked into the sample (due to supply chain issues). L = Below calibration range, reported for QC purposes (Field Duplicate) Samples in Batch: 24100036$STA '""(=((!!!(@(A@(!A=(+ Page 7 of 12  9* 9 $ * 9 * 9  * 9B * B B * (2 (2 -02/62/0/1 --2-12/0/1 (2 (2 * 174>44 -0#60/ 4-->64 /6-//475 >707/ >4#6/-55 >75#/67141 *   $  8    9   &C  * *  9> 9  9# / 1 2 (9 (9 (9 (9 (9 (9 (9 (9 &9* 8* ) * $ * 8 $ 9 ) * +* (2 >00 (2 (2 * - - - - - - - - , 2 )* 0"10 /"0 /"0 /"0 1"0 /"0 0"10 0"10 , 89: 0 76 ), /4-## >4--# + 6 ! $    &C    9   8  '""(=((!!!(@(A@(!A=(+ !,;<;=8!:,>?,@ Page 8 of 12 F 999 2 -/0 -/0 /10 /1"0 /1"0 /1"0 -/0 -/0 ((!!( 2 >"0 (9 7"7 /"6 /"5 /"6 (9 /"1 ((!!( ? 2 -0> 7# --# 61 //6 6/ /1"0 77 /4"- 67 /1"> 60 --> 64 56"5 41 : ! D?E >>66 /1-40 #1-#4--05 17--/ -5--/ #--#5 1--#/ 6 ! $    &C    9   8  + '""(=((!!!(@(A@(!A=(+ A / 18A/:, * <'(! F9 2 -/0 -/0 /10 /1 /1 /1 -/0 -/0 < '! 2 -01 --4 //# /1"1 //"5 /0"0 -/> -#> < =A ? 75 65 6# -0/ 6> 7# -01 --/ Page 9 of 12 : ! ? 1>-04 ##-/6 1--/0 4#-07 >>-04 ->--# 1--// >/--> / + -47/1-47/>-47/4-47/5-47/7-47/6-47#0-47#--47#/-47## -47#1-47#> 6   '!()*+! (!* * ..!)! 012!)! *())! )+!+450)! !(*0* * 07(+)!    Page 10 of 12  $-,, %-&,   /% -,% %/ -6$ &# ,# 3% /  ,,,,,,,,-  #$%& #$%, #$%# #$%/ #$%$ #$%3 #$6- #$6 #$6% #$66 #$6& #$6, 6 Page 11 of 12 Page 12 of 12 80 Lupes Drive Stratford, CT 06615 Client: Ms. Nafisah Ali 11 Technology Drive North Chelmsford, MA 01863 Tel: (203) 377-9984 Fax: (203) 377-9952 e-mail: cet1@cetlabs.com Analytical Report CET# 24J0586 Report Date:October 23, 2024 Project: EPA, Bridgeport CT MS4 Connecticut Laboratory Certificate: PH 0116 Massachusetts Laboratory Certificate: M-CT903 Rhode Island Laboratory Certificate: 199 New York NELAP Accreditation: 11982 Pennsylvania Laboratory Certificate: 68-02927 Page 1 of 7 CET # : 24J0586 Project: EPA, Bridgeport CT MS4 SAMPLE SUMMARY The sample(s) were received at 11.1 C. This report contains analytical data associated with following samples only. Sample ID Seabright 1 Dup 1 Seaside 1 Dup 2 Laboratory ID 24J0586-01 24J0586-02 24J0586-03 24J0586-04 Matrix Water Water Water Water Collection Date/Time 10/22/2024 9:48 10/22/2024 9:48 10/22/2024 11:56 10/22/2024 11:56 Receipt Date 10/22/2024 10/22/2024 10/22/2024 10/22/2024 Analyte: Enterococcus Bacteria [Enterolert] Laboratory ID Client Sample ID 24J0586-01 24J0586-02 24J0586-03 24J0586-04 Seabright 1 Dup 1 Seaside 1 Dup 2 Result 340 340 17 29 RL Units Dilution Batch Prepared 10 MPN/100 1 BJ42369 10/22/2024 mL 10 MPN/100 1 BJ42369 10/22/2024 mL 10 MPN/100 1 BJ42369 10/22/2024 mL 10 MPN/100 1 BJ42369 10/22/2024 mL Analyst: JMB Matrix: Water Date/Time Analyzed Notes 10/22/2024 13:30 10/22/2024 13:30 10/22/2024 13:30 10/22/2024 13:30 Complete Environmental Testing, Inc. 80 Lupes Drive, Stratford, CT 06615 Tel: 203-377-9984 Fax: 203-377-9952 www.cetlabs.com Page 2 of 7 CET # : 24J0586 Project: EPA, Bridgeport CT MS4 Analyte Surrogate: QUALITY CONTROL SECTION Result RL Spike Source % Rec RPD Level Result % Rec Limits RPD Limit Notes Complete Environmental Testing, Inc. 80 Lupes Drive, Stratford, CT 06615 Tel: 203-377-9984 Fax: 203-377-9952 www.cetlabs.com Page 3 of 7 CET # : 24J0586 Project: EPA, Bridgeport CT MS4 80 Lupes Drive Stratford, CT 06615 Tel: (203) 377-9984 Fax: (203) 377-9952 email: cet1@cetlabs.com Quality Control Definitions and Abbreviations Internal Standard (IS) Surrogate Recovery Continuing Calibration Batch ND RL Dilution Duplicate Result Spike Level Matrix Spike Result Matrix Spike Dup Matrix Spike % Recovery Matrix Spike Dup % Recovery RPD Blank LCS % Recovery Recovery Limits CC An Analyte added to each sample or sample extract. An internal standard is used to monitor retention time, calculate relative response, and quantify analytes of interest. The % recovery for non-target organic compounds that are spiked into all samples. Used to determine method performance. An analytical standard analyzed with each set of samples to verify initial calibration of the system. Samples that are analyzed together with the same method, sequence and lot of reagents within the same time period. Not detected at or above the specified reporting limit. RL is the limit of detection for an analyte after any adjustment made for dilution or percent moisture. Multiplier added to detection levels (MDL) and/or sample results due to interferences and/or high concentration of target compounds. Result from the duplicate analysis of a sample. Amount of analyte found in a sample. Amount of analyte added to a sample Amount of analyte found including amount that was spiked. Amount of analyte found in duplicate spikes including amount that was spike. % Recovery of spiked amount in sample. % Recovery of spiked duplicate amount in sample. Relative percent difference between Matrix Spike and Matrix Spike Duplicate. Method Blank that has been taken through all steps of the analysis. Laboratory Control Sample percent recovery. The amount of analyte recovered from a fortified sample. A range within which specified measurements results must fall to be compliant. Calibration Verification Flags: H- Recovery is above the control limits L- Recovery is below the control limits B- Compound detected in the Blank P- RPD of dual column results exceeds 40% #- Sample result too high for accurate spike recovery. Connecticut Laboratory Certification PH0116 Massachussets Laboratory Certification M-CT903 Pennsylvania NELAP Accreditation 68-02927 New York NELAP Accreditation 11982 Rhode Island Certification 199 Complete Environmental Testing, Inc. 80 Lupes Drive, Stratford, CT 06615 Tel: 203-377-9984 Fax: 203-377-9952 www.cetlabs.com Page 4 of 7 CET # : 24J0586 Project: EPA, Bridgeport CT MS4 All questions related to this report should be directed to David Ditta, Timothy Fusco, or Jeffrey Smith at 203-377-9984. Sincerely, This technical report was reviewed by Timothy Fusco David Ditta Laboratory Director Project Manager This report shall not be reproduced except in full, without the written approval of the laboratory Report Comments: Sample Result Flags: E- The result is estimated, above the calibration range. H- The surrogate recovery is above the control limits. L- The surrogate recovery is below the control limits. B- The compound was detected in the laboratory blank. P- The Relative Percent Difference (RPD) of dual column analyses exceeds 40%. D- The RPD between the sample and the sample duplicate is high. Sample Homogeneity may be a problem. +- The Surrogate was diluted out. *C1- The Continuing Calibration did not meet method specifications and was biased low for this analyte. Increased uncertainty is associated with the reported value which is likely to be biased low. *C2- The Continuing Calibration did not meet method specifications and was biased high for this analyte. Increased uncertainty is associated with the reported value which is likely to be biased high. *F1- The Laboratory Control Sample recovery is outside of control limits. Reported value for this analyte is likely to be biased on the low side. *F2- The Laboratory Control Sample recovery is outside of control limits. Reported value for this analyte is likely to be biased on the high side. *I- Analyte exceeds method limits from second source standard in Initial Calibration Verification (ICV). No directional bias. All results met standard operating procedures unless indicated by a data qualifier next to a sample result, or a narration in the QC report. For Percent Solids, if any of the following prep methods (3050B, 3540C, 3545A, 3550C, 5035 and 9013A) were used for samples pertaining to this report, the percent solids procedure is within that prep method. Complete Environmental Testing is only responsible for the certified testing and is not directly responsible for the integrity of the sample before laboratory receipt. ND is None Detected at or above the specified reporting limit Reporting Limit (RL) is the limit of detection for an analyte after any adjustment made for dilution or percent moisture. All analyses were performed in house unless a Reference Laboratory is listed. Samples will be disposed of 30 days after the report date. Complete Environmental Testing, Inc. 80 Lupes Drive, Stratford, CT 06615 Tel: 203-377-9984 Fax: 203-377-9952 www.cetlabs.com Page 5 of 7 CET # : 24J0586 Project: EPA, Bridgeport CT MS4 Certified Analyses included in this Report Analyte Enterolert in Water Enterococcus Bacteria CERTIFICATIONS Certifications CT Complete Environmental Testing operates under the following certifications and accreditations : Code CT Description Connecticut Public Health Number PH0116 Expires 09/30/2024 Complete Environmental Testing, Inc. 80 Lupes Drive, Stratford, CT 06615 Tel: 203-377-9984 Fax: 203-377-9952 www.cetlabs.com Page 6 of 7 Page 7 of 7