Document 5bn2OJbjGmLdLmOvZXVLjx39z
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 1
Laboratory Services and Applied Science Division 11 Technology Drive
North Chelmsford, Massachusetts 01863-2431
Drafted Date: Finalized Date:
May 26, 2021 July 1, 2021
Subject:
Reconnaissance and Sampling Inspection Report Clean Water Act - National Pollutant Discharge Elimination System City of Methuen, MA
From:
Michelle Coombs, Inspector Field Services Branch (FSB) Laboratory Services and Applied Science Division (LSASD)
Reviewed By:
Jerome Keefe, Investigations Team Leader, LSASD-FSB
To:
Denny Dart, Water Compliance Section Chief,
Enforcement and Compliance Assurance Division (ECAD-EWC)
CC:
Elizabeth Kudarauskas, Water Technical Lead, ECAD-EWC
\MRC\ \JCK\
I. Facility Information
A. Facility Name: City of Methuen, MA B. Facility Location: 41 Pleasant St, Searles Bldg. Room 206, Methuen, MA 01844 C. Facility Contact: Stephen Gagnon, Engineering Dept. Administrator,
SJGagnon@ci.methuen.ma.us, (978)983-8550 D. NPDES Permit ID:MA041210 (MS4)
II. Background Information
A. Date/Start time of recon inspection: 05/24/2021, 08:30 AM B. Weather conditions: ~65F, partly cloudy C. USEPA Representatives: Michelle Coombs and Shannon Brunelle (as a trainee) D. State/Local Representatives: None E. Date/Start time of sampling inspection: 05/25/2021, 08:15 AM F. Weather conditions: ~ 60F, partly cloudy G. USEPA Representatives: Michelle Coombs and Shannon Brunelle (as a trainee) H. State/Local Representatives: None I. Federally Enforceable Requirements Investigated:
Stormwater discharges and certain non-stormwater discharges from the City of Methuen, MA (the City's) Municipal Separate Storm Sewer (MS4) are authorized by the National Pollutant Discharge Elimination System (NPDES) General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems (hereinafter, the Permit), issued by the Environmental Protection Agency (EPA)
City of Methuen, MA (MA041210) EPA MS4 Compliance Sampling Inspection
Region 1. The City obtained coverage under the Permit with NPDES Permit ID MA041210. J. Pollutants Sampled: Pharmaceuticals and Personal Care Products (PPCPs), E.
coli/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, associated manholes, and/or catch basins which discharge into the Merrimack River, Spickett River, Searles Pond, and Bare Meadow Brook, 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 City of Methuen, MA Municipal Separate Storm Sewer System that may adversely impact the water quality in the Merrimack River, Spickett River, Searles Pond, and Bare Meadow Brook. Samples were collected from twelve (12) locations in accordance with the FSB Investigations Team Stormwater Program Plan. Sample sites were identified during a reconnaissance inspection conducted on May 24, 2021.
V. Permittee Details
The City of Methuen, MA occupies approximately 23 square miles in Essex County, MA, approximately 30 miles northwest of Boston, MA. The City shares borders with the municipalities of Haverhill to the northeast, North Andover to the east, Lawrence and Andover to the south, Dracut (Middlesex County) to the west, Pelham, New Hampshire (Hillsborough County) to the northwest, and Salem, New Hampshire (Rockingham County) to the north. According to the 2010 U.S. Census, the regulated population of Methuen was 47,252. There are five (5) CSOs permitted to discharge into the receiving waters of the Merrimack River and the Spickett River (NPDES Permit No. MA0100447). The Merrimack River, Spickett River, and Bare Meadow Brook are listed as MS4 receiving waters in the Methuen Notice of Intent (NOI) for coverage under the permit.
VI. 05/24/2021 Reconnaissance Inspection Summary
On Monday, May 24, 2021, EPA employees Michelle Coombs and Shannon Brunelle ("the EPA Inspection Team") conducted an unannounced reconnaissance inspection of the City of Methuen, MA MS4. They were not accompanied by any city or state representatives. The inspection
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started at Bare Meadow Brook at approximately 08:30 AM. At the start time of the inspection, the weather was approximately 65F and partly cloudy.
According to Weather Underground for the Lawrence Municipal Airport (KMANORTH328), the last precipitation event prior to the inspection occurred on May 10, 2021, with 0.34 inches recorded. No precipitation was recorded within the 72 hours before the inspection.
None of the locations visited during the recon inspection were field screened with the test kits or the YSI water quality meter. Locations visited were noted for appearance, presence of flow, and access requirements.
VII. 05/25/2021 Sampling Inspection Summary
On May 25, 2021, the EPA Inspection Team conducted an unannounced compliance sampling inspection of the City of Methuen MS4 at the locations described in Section VIII. They were not accompanied by any city or state representatives. The inspection started at Bare Meadow Brook at approximately 08:15 AM. At the start time of the inspection, the weather was approximately 60F and partly cloudy.
According to Weather Underground for the Lawrence Municipal Airport (KMANORTH328), the last precipitation event prior to the inspection occurred on May 10, 2021, with 0.34 inches recorded. No precipitation was recorded within the 72 hours before the inspection. According to the National Weather Service, in the month (to date) of May, 0.35 inches of rain was observed, which is approximately 13% normal of the 30-year normal value of 2.67 inches. According to the US Drought Monitor, as of May 25, 2021, Essex County is experiencing no drought conditions.
The sampling locations described in Section VIII were field screened using test kits for ammonia (nitrogen), surfactants, and total chlorine. In-situ measurements were also taken using a YSI meter for specific conductivity, salinity, and temperature. All field data was recording on field data sheets. Samples were delivered to and analyzed for E. coli and Enterococcus and PPCPs at the EPA New England Regional Laboratory (NERL) in North Chelmsford, MA. Table 1 below summarizes the sampling and analytical data.
VIII. Description of Sampling Locations Photographs depicting each sample location are included in Appendix A of this report.
Renfrew: A single outfall approximately 16 inches in diameter located on the northwest side of the Renfrew St bridge at Bare Meadow Brook. Discharge flow was approximately 5 gallons per minute (gpm) into Bare Meadow Brook. Suds in the pool were observed below the pipe. Sample was collected from the outfall pipe. A strong flowing discharge that appeared to be coming from a highly pressurized source was observed at this location. The observed discharge was flowing straight down from the top of the street culvert into the brook. A photograph was taken and is included in the report (labelled as "Renfrew2"). A sample could not be collected because it was not accessible.
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459MerrSt: A single reinforced concrete outfall approximately 24 inches in diameter located at 459 Merrimack Street. Discharge flow was approximately 20 gpm into the Merrimack River. Some suds were observed downstream of the pipe. Sample was collected from the outfall pipe.
Walton: A single reinforced concrete outfall approximately 24 inches in diameter located at the end of Walton Avenue. Discharge flow was approximately less than 5 gpm into a small wetland area flowing to the Merrimack River. Sample was collected from the outfall pipe.
PleasVal: A single concrete outfall approximately 24 inches in diameter located on the southeast corner of Chippy Lane and Pleasant Valley Street. Discharge flow was approximately 12-15 gpm into Bare Meadow Brook. A slightly musty odor was detected, and green/brown algae growth was observed in the pipe. Sample was collected from the outfall pipe.
Outfall1A: A pair of reinforced concrete outfalls approximately 36 inches in diameter located at the Prides Crossing Complex on Riverview Blvd. Discharge flow was approximately 5 gpm into the Merrimack River. Brown algae growth was observed in the pipe and on the downstream rocks, the sample appeared slightly cloudy, and suds were observed downstream. Sample was collected from the south outfall pipe (looking upstream)
Outfall1B: A pair of reinforced concrete outfalls approximately 36 inches in diameter located at the Prides Crossing Complex on Riverview Blvd. Discharge flow was approximately 5 gpm into the Merrimack River. Brown algae growth was observed in the pipe and on the downstream rocks, the sample appeared slightly cloudy, and suds were observed downstream. Sample was collected from the north outfall pipe (looking upstream)
Perkins: A single concrete outfall approximately 24 inches in diameter located at the end of Perkins Street. Discharge flow was approximately less than 5 gpm into a small stream flowing to the Merrimack River. Suds at the mouth of the outfall and green algae growth were observed in the pipe. Sample was collected from the outfall pipe.
76Swan: An in-stream sample collected from an unnamed stream from Searles Pond located near the CVS parking lot at the corner of Jackson Street and Swan St. Trash and green algae growth was observed floating on the stream surface and a musty odor was detected. Sample was collected from the stream prior to the reinforced concrete inflow pipe that flows under the parking lot. The outfall adjacent to this inflow point was dry and not flowing.
EastSt: A single concrete outfall approximately 12 inches in diameter located in the Jehovah's Witness Kingdom Hall parking lot on the south side of the property. Discharge flow was approximately less than 5 gpm into the unnamed stream from Searles Pond (stream sampled at the 76Swan location). A slightly musty odor was detected, and brown/green algae growth was observed in the pipe. Sample was collected approximately 6 inches inside the pipe due to the receiving water slightly backfilling into the pipe.
Horne: A single PVC outfall approximately 18 inches in diameter located on Horne St on the northwest side of the street, slightly north of the intersection with Huse Road. Discharge flow was approximately 5 gpm into the Spickett River. Some suds were observed in the pool and orange staining was observed on the rocks and sediment and
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in the pipe. An oily, fragmented sheen was observed on the stream surface. Sample was collected from the outfall pipe. ParkStCVS: A single reinforced concrete outfall approximately 36 inches in diameter with a duckbill installed, located at the southeast corner of the CVS parking lot on Park Street. Discharge flow was approximately 10 gpm into the Spickett River. An oily, fragmented sheen was observed on the stream surface as well as orange sediment at the opening of the duckbill. Algae growth was also observed on the rocks. Sample was collected from the duckbill. A second outfall with a duckbill is located adjacent to this sample location; however it was not flowing at the time of the inspection. The duckbill was cracked and exposing the inside of the pipe. 34Burn: A single reinforced concrete outfall approximately 12 inches in diameter located on the southeast side of the parking lot at 34 Burnham Road. Discharge flow was approximately less than 5 gpm into an unknown stream flowing to the Merrimack River. Long brown algae growth was observed inside the pipe and the pipe was almost completely submerged by water. Sample was collected at the outfall pipe.
Outfalls listed in this section were observed to be flowing but were not sampled during the inspection due to time constraints.
ECapitol: A single steel outfall approximately 24 inches in diameter located at the intersection of East Capitol Street and Marc Avenue. Discharge flow was approximately 5 gpm into a wetland area that flows into the Spickett River. Outfall was completely submerged by water. No sample was collected at this location.
BrookSt: A single outfall (size and construction could not be determined due to visual obstruction) located at the corner of Brook Street and Queen Avenue. Discharge flow was approximately less than 1 gpm into an unnamed stream flowing from Searles Pond. Brown algae growth and a slightly musty odor was observed at this location. Trash, including multiple car batteries, was observed at this location. No sample was collected at this location.
French: A single reinforced concrete outfall approximately 18 inches in diameter located at the eastern corner of the parking lot behind the church on All Saints Lane. Discharge flow was a trickle into the Spickett River. No sample was collected at this location.
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Map of Sample Locations
Note: the locations on the map were estimated using Google Earth and are used for display purposes only.
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Table 1: Summary of Sampling and Analytical Data
Location
Coordinates1 (decimal degrees)
YSI Meter
Field Test Kits (mg/L)
Site ID Sample Date Sample Time
North
West Salinity, ppt. Temperature, C Conductivity, S/cm Ammonia Total Chlorine Surfactants
Renfrew 05/25/2021
08:25
42.756615
-71.133133 0.5 14.9 1011 0.0 0.0 0.5
459MerrSt 05/25/2021
08:52
42.750860
-71.125383 0.2 17.1
462.1 0.0 0.76 0.25
Walton 05/25/2021
09:15
42.737998
-71.126391 0.1 15.1
304.7 0.0 0.05 0.25
PleasVal 05/25/2021
09:40
42.743969
-71.149160 0.5 14.0 1090 0.25 0.04 0.5
Outfall1A 05/25/2021
10:12
42.722651
-71.134020 1.0 12.0 2011 0.0 0.10 0.5
Outfall1B 05/25/2021
10:15
42.722651
-71.134020 1.0 12.6 2031 NA NA NA
Bacteria (MPN/100mL)
E. coli Enterococcus
ND
ND
8
ND
12
6
353
218
4
2,747
1,642
616
Cotinine
0.57
2.1
1.6
7.3
1.2
1.1
Acetaminophen
ND
ND
ND
4.7
ND
ND
Paraxanthine
ND
ND
ND
ND
ND
ND
PPCPs (ng/L)
Atenolol Caffeine
ND
ND
ND
ND
ND
ND
ND
8.3
ND
21
6.2
6.3
Metoprolol
ND
ND
ND
ND
ND
ND
Diphenhydramine
ND
ND
ND
ND
ND
ND
Carbamazepine
1.3
0.43
ND
ND
ND
ND
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 E. Coli: Red 10,000 col/100ml, Orange 1,260 col/100ml, Yellow 235 col/100ml, Black < 235 col/100ml Entero: Red 1,000 col/100ml, Orange 350 Yellow 61 col/100ml, Black < 61 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: Dark Pink 100x the RL; Pink 10x the RL; Light Pink 3x the RL; No Pink < 3x the RL* *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.
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Table 1: Summary of Sampling and Analytical Data, cont.
Site ID
Perkins
76Swan
EastSt
Horne
DUP01 ParkStCVS 34Burn
Location
Sample Date
05/25/2021 05/25/2021 05/25/2021 05/25/2021 05/25/2021 05/25/2021 05/25/2021
Sample Time
10:45
11:14
11:35
12:03
12:03
12:29
12:55
Coordinates1 (decimal degrees)
North West
42.723838 -71.139989
42.723491 -71.158446
42.725738 -71.161914
42.723636 -71.180656
42.723636 -71.180656
42.725100 -71.183230
42.701016 -71.201799
Salinity, ppt.
1.2
0.7
0.7
0.1
N/A
1.0
0.4
YSI Meter Temperature, C
15.2
17.2
17.9
15.4
N/A
14.6
16.5
Conductivity, S/cm
2373
1404
1447
282.3
N/A
2010
764.0
Field Test Kits (mg/L)
Ammonia Total Chlorine Surfactants
0.25
0.0
0.0
0.0
N/A
0.25
0.25
0.06
0.08
0.06
0.0
N/A
0.03
0.19
0.5
0.5
0.5
0.25
N/A
0.5
0.25
Bacteria (MPN/100mL)
E. coli Enterococcus
16
1,302
281
ND
N/A
ND
ND
120
2,452
1,089
ND
N/A
4
ND
Cotinine
0.81
4.6
2.8
0.96
1.0
2.5
2.4
Acetaminophen
ND
ND
ND
ND
ND
ND
ND
Paraxanthine
ND
3.3
2.9
ND
ND
2.3
3.0
PPCPs (ng/L)
Atenolol Caffeine
ND
ND
ND
ND
ND
ND
ND
ND
12
9.6
ND
ND
22
9.6
Metoprolol
ND
ND
ND
ND
ND
ND
ND
Diphenhydramine
ND
ND
ND
ND
ND
ND
ND
Carbamazepine
ND
0.42
ND
ND
ND
2.3
ND
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
E. Coli: Red 10,000 col/100ml, Orange 1260 col/100ml, Yellow 235 col/100ml, Black < 235 col/100ml
Entero: Red 1,000 col/100ml, Orange 350 Yellow 61 col/100ml, Black < 61 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: Dark Pink 100x the RL; Pink 10x the RL; Light Pink 3x the RL; No Pink < 3x the RL
*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.
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IX. Appendix Appendix A: Photograph Log X. Attachments Attachment A: Laboratory Report for PPCPs (Source Tracking) Analysis Attachment B: Laboratory Report for E. coli Analysis Attachment C: Laboratory Report for Enterococcus Analysis
End of Report
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Appendix A Photograph Log
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Renfrew (photo taken 5/24 at 08:48 AM): Outfall located on the northeast side of the Renfrew Street bridge over Bare Meadow Brook. Sample point is indicated by a red arrow.
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Renfrew2 (photo taken 5/24 at 08:48 AM): Downstream view of unidentified discharge spraying into Bare Meadow Brook from the top of the culvert, indicated by a red circle.
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459MerrSt (photo taken 5/24 at 10:32 AM): Outfall located near 459 Merrimack Street flowing into the Merrimack River. Sample point is indicated by a red arrow.
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Walton (photo taken 5/24 at 10:18 AM): Outfall located at the intersection of Walton Ave and Riley Ave (indicated by a red box), with an access manhole in the background.
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Walton (photo taken 5/24 at 10:18 AM): Close-up view of the outfall where the sample was collected. Sample point is indicated by a red arrow.
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PleasVal (photo taken 5/24 at 09:03 AM): Outfall located on the northeast corner of Chippy Lane and Pleasant Valley St. flowing into Bare Meadow Brook. Sample point is indicated by a red arrow.
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Outfall 1A & 1B (from left to right) (photo taken 5/25 at 10:09 AM): Pair of outfalls located within the Pride's Crossing complex flowing into the Merrimack River. Sample points are indicated by red arrows.
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Perkins (photo taken 5/24 at 10:01 AM): Outfall located at the end of Perkins Street flowing into an adjacent wetland to the Merrimack River. Sample point is indicated by a red arrow.
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76Swan (photo taken 5/24 at 11:21 AM): Gated outfall located on the north side of the CVS parking lot at 76 Swan Street (dry at time of inspection). In-stream sample of the stream coming from Searles Pond collected just before the opening of the culvert pipe that flows under the parking lot. Sample point is indicated by a red arrow.
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76Swan (photo taken 5/24 at 11:21 AM): View of gated culvert opening where the stream coming from Searles Pond begins to flow underneath the parking lot. Sample point is indicated by a red arrow.
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EastST (photo taken 5/24 at 10:51 AM): Outfall located at the southern end of the Kingdom of Jehovah's Witnesses parking lot, flowing into the stream coming from Searles Pond. Sample point is indicated by a red arrow.
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Horne (photo taken 5/24 at 12:27 PM): Outfall located at the northwest corner of Horne Street, just north of the intersection with Huse Road, flowing into the Spickett River. Note the orange staining of the pipe and sediment. Sample point is indicated by a red arrow.
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ParkStCVS (photo taken 5/24 at 12:58 PM): Outfall with duckbill located on the southeast corner of the CVS parking lot on Park Street, flowing into the Spickett River. Sample point is indicated by a red arrow.
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34Burn (photo taken 5/24 at 13:58 PM): Outfall located near the southeast corner of the driveway leading toward Riverside Drive. Note that the outfall is almost completely submerged. Sample was collected at the mouth of the outfall and is indicated by a red arrow.
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ECapitol (photo taken 5/24 at 14:45 PM): Outfall located at the corner of East Capitol Street and Marc Ave, adjacent to 47 East Capitol Street. The outfall is completely submerged. No sample was collected at this location.
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BrookSt (photo taken 5/24 at 11:09 AM): Outfall located at the corner of Brook Street and Queen Avenue flowing into an unnamed stream flowing from Searles Pond. No sample was collected at this location. Outfall is located under the bank on the right side of the photograph (indicated by a red arrow). Discharge flow is visible and is indicated by a blue bracket.
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French (photo taken 5/24 at 12:05 PM): Outfall located at the eastern corner of the parking lot behind the church on All Saints Lane. Flow was a trickle into the Spickett River. No sample was collected at this location.
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Attachment A Laboratory Report for Source Tracking Analysis Author: LSASD Laboratory Services Branch
Pages: 20
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June 08, 2021
Michelle Coombs - LFSB US EPA New England R1
United States Environmental Protection Agency Laboratory Services and Applied Science Division
11 Technology Drive North Chelmsford, MA 01863-2431
Laboratory Report
Page 1 of 20
Project Number: 21050030 Project: MS4 Methuen, MA Analysis: HPLC/MS/MS Source Tracking Analysis EPA Chemist: Peter Philbrook
Date Samples Received by the Laboratory: 05/25/2021 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.. 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,
21050030$STA
Qualifiers:
RL = Reporting limit ND = Not Detected above Reporting limit NA = Not Applicable due to high sample dilutions or sample interferences NC = Not calculated since analyte concentration is ND. J = Estimated value J1 = Estimated value due to MS recovery outside accceptance criteria J2 = Estimated value due to LFB result outside acceptance criteria J3 = Estimated value due to RPD result outside acceptance criteria J4 = Estimated value due to LCS result outside acceptance criteria E = Estimated value exceeds the calibration range L = Estimated value is below the calibration range B = Analyte is associated with the lab blank or trip blank contamination. Values are
qualified when the observed concentration of the contamination in the sample extract is less than 10 times the concentration in the blank. R = No recovery was calculated since the analyte concentration is greater than four times the spike level. P = The confirmation value exceeded 35% difference and is less than 100%. The lower value is reported. C = The identification has been confirmed by GC/MS. A = Suspected Aldol condensation product. N = Tentatively identified compound.
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21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
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Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
Renfrew 5/25/2021 5/26/2021 6/01/2021 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
0.57 ND ND ND ND ND ND 1.3
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91884 Stormwater 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 (%) 58 45
QC Ranges 59 - 137 19 - 135
Comments: Recovery of the surrogate Phentermine was below QC limits
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 4 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
459MerrSt 5/25/2021 5/26/2021 6/01/2021 N/A N/A
CAS Number
486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4
Compound
Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine
Concentration ng/L
2.1 ND ND ND 8.3 ND ND 0.43
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91885 Stormwater 500 mL N/A 1 N/A
Dilution
1 1 1 1 1 1 1 1
RL ng/L
Qualifier
0.40
2.0
2.0
2.0
4.0
2.0
0.40
0.40
Surrogate Compounds Phentermine-D5 Diphenhydramine-D3
Recoveries (%) 67 75
QC Ranges 59 - 137 19 - 135
Comments:
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 5 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
Walton 5/25/2021 5/26/2021 6/01/2021 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
1.6 ND ND ND ND ND ND ND
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91886 Stormwater 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 (%) 89 92
QC Ranges 59 - 137 19 - 135
Comments:
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 6 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
PleasVal 5/25/2021 5/26/2021 6/01/2021 N/A N/A
CAS Number
486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4
Compound
Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine
Concentration ng/L
7.3 4.7 ND ND 21 ND ND ND
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91887 Stormwater 500 mL N/A 1 N/A
Dilution
1 1 1 1 1 1 1 1
RL ng/L
Qualifier
0.40
2.0
2.0
2.0
4.0
J
2.0
0.40
0.40
J
Surrogate Compounds Phentermine-D5 Diphenhydramine-D3
Recoveries (%) 27 77
QC Ranges 59 - 137 19 - 135
Comments: J = The internal standard recovery for caffeine was 43% and carbamazepine was 31% where 50%-150% are the QC limits. All other IS recoveries were within limits - matrix suppression is indicated.
Recovery of the surrogate Phentermine was below QC limits
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 7 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
Outfall 1A 5/25/2021 5/26/2021 6/01/2021 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
1.2 ND ND ND 6.2 ND ND ND
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91888 Stormwater 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
J
Surrogate Compounds Phentermine-D5 Diphenhydramine-D3
Recoveries (%) 61 57
QC Ranges 59 - 137 19 - 135
Comments: J = The internal standard recovery for carbamazepine was 33%, where 50%-150% are the expected QC limits. All other IS recoveries were within limits - matrix suppression is indicated.
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 8 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
Outfall 1B 5/25/2021 5/26/2021 6/01/2021 N/A N/A
CAS Number
486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4
Compound
Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine
Concentration ng/L
1.1 ND ND ND 6.3 ND ND ND
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91889 Stormwater 500 mL N/A 1 N/A
Dilution
1 1 1 1 1 1 1 1
RL ng/L
Qualifier
0.40
2.0
2.0
2.0
4.0
2.0
0.40
0.40
J
Surrogate Compounds Phentermine-D5 Diphenhydramine-D3
Recoveries (%) 53 52
QC Ranges 59 - 137 19 - 135
Comments: J = The internal standard recovery for carbamazepine was 33%, where 50%-150% are the expected QC limits. All other IS recoveries were within limits - matrix suppression is indicated.
Recovery of the surrogate Phentermine was below QC limits
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 9 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
Perkins 5/25/2021 5/26/2021 6/01/2021 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
0.81 ND ND ND ND ND ND ND
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91890 Stormwater 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 (%) 56 60
QC Ranges 59 - 137 19 - 135
Comments: Recovery of the surrogate Phentermine was below QC limits
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 10 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
76Swan 5/25/2021 5/26/2021 6/01/2021 N/A N/A
CAS Number
486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4
Compound
Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine
Concentration ng/L
4.6 ND 3.3 ND 12 ND ND 0.42
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91891 Stormwater 500 mL N/A 1 N/A
Dilution
1 1 1 1 1 1 1 1
RL ng/L
Qualifier
0.40
2.0
2.0
2.0
4.0
2.0
0.40
0.40
J
Surrogate Compounds Phentermine-D5 Diphenhydramine-D3
Recoveries (%) 16 73
QC Ranges 59 - 137 19 - 135
Comments: J = The internal standard recovery for carbamazepine was 33%, where 50%-150% are the expected QC limits. All other IS recoveries were within limits - matrix suppression is indicated.
Recovery of the surrogate Phentermine was below QC limits
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 11 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
EastSt 5/25/2021 5/26/2021 6/01/2021 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 2.9 ND 9.6 ND ND ND
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91892 Stormwater 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
J
Surrogate Compounds Phentermine-D5 Diphenhydramine-D3
Recoveries (%) 19 68
QC Ranges 59 - 137 19 - 135
Comments: J = The internal standard recovery for carbamazepine was 33%, where 50%-150% are the expected QC limits. All other IS recoveries were within limits - matrix suppression is indicated.
Recovery of the surrogate Phentermine was below QC limits
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 12 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
Horne 5/25/2021 5/26/2021 6/01/2021 N/A N/A
CAS Number
486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4
Compound
Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine
Concentration ng/L
0.96 ND ND ND ND ND ND ND
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91893 Stormwater 500 mL N/A 1 N/A
Dilution
1 1 1 1 1 1 1 1
RL ng/L
Qualifier
0.40
2.0
2.0
2.0
4.0
2.0
0.40
0.40
Surrogate Compounds Phentermine-D5 Diphenhydramine-D3
Recoveries (%) 67 65
QC Ranges 59 - 137 19 - 135
Comments:
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 13 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
DUP01 5/25/2021 5/26/2021 6/01/2021 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
1.0 ND ND ND ND ND ND ND
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91894 Stormwater 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 (%) 78 72
QC Ranges 59 - 137 19 - 135
Comments:
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 14 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
ParkStCVS 5/25/2021 5/26/2021 6/01/2021 N/A N/A
CAS Number
486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4
Compound
Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine
Concentration ng/L
2.5 ND 2.3 ND 22 ND ND 2.3
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91895 Stormwater 500 mL N/A 1 N/A
Dilution
1 1 1 1 1 1 1 1
RL ng/L
Qualifier
0.40
2.0
2.0
2.0
4.0
2.0
0.40
0.40
Surrogate Compounds Phentermine-D5 Diphenhydramine-D3
Recoveries (%) 74 73
QC Ranges 59 - 137 19 - 135
Comments:
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
HPLC/MS/MS Source Tracking Analysis
Page 15 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
34Burn 5/25/2021 5/26/2021 6/01/2021 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
2.4 ND 3.0 ND 9.6 ND ND ND
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
AB91896 Stormwater 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 (%) 79 82
QC Ranges 59 - 137 19 - 135
Comments:
21050030$STA
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
Laboratory Blank
Page 16 of 20
Client Sample ID: Date of Collection: Date of Preparation: Date of Analysis:
Dry Weight Prepared: Wet Weight Prepared:
N/A N/A 5/26/2021 6/01/2021 N/A N/A
CAS Number
486-56-6 103-90-2 611-59-6 29122-68-7 58-08-2 56392-17-7 58-73-1 298-46-4
Compound
Cotinine Acetaminophen Paraxanthine Atenolol Caffeine Metoprolol Diphenhydramine Carbamazepine
Concentration ng/L
ND ND ND ND ND ND ND ND
Lab Sample ID: Matrix: Amount Prepared: Percent Solids: Extract Dilution: pH:
N/A Stormwater 500 mL N/A 1 N/A
Dilution
1 1 1 1 1 1 1 1
RL ng/L
Qualifier
0.40
2.0
2.0
2.0
4.0
2.0
0.40
0.40
Surrogate Compounds Phentermine-D5 Diphenhydramine-D3
Recoveries (%) 70 74
QC Ranges 59 - 137 19 - 135
Comments:
21050030$STA
PARAMETER
Acetaminophen Atenolol Caffeine Carbamazepine Cotinine Diphenhydramine Metoprolol Paraxanthine
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
MATRIX SPIKE (MS) RECOVERY
Sample ID: AB91890
Page 17 of 20
SPIKE ADDED
ng/L
120 120 240 24.0 24.0 24.0 120 120
SAMPLE CONCENTRATION
ng/L
ND ND ND ND 0.81 ND ND ND
MS
MS
CONCENTRATION
%
ng/L
REC
91.5
76
130
108
177
74
20.3
85
21.6
87
16.4
68
140
117
108
90
QC LIMITS (% REC)
61 - 100 59 - 122 54 - 128 61 - 120 48 - 124 30 - 130 59 - 128 42 - 125
21050030$STA
PARAMETER
Acetaminophen Atenolol Caffeine Carbamazepine Cotinine Diphenhydramine Metoprolol Paraxanthine
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
Laboratory Duplicate Results
Sample ID: AB91887
SAMPLE RESULT
ng/L
4.7 ND 21.0 ND 7.3 ND ND ND
SAMPLE DUPLICATE RESULT
ng/L
4.57 ND 19.7 ND 7.70 ND ND ND
PRECISION RPD %
2.8 NC 6.4 NC 5.3 NC NC NC
Page 18 of 20
QC LIMITS
50 50 50 50 50 50 50 50
21050030$STA
PARAMETER
Acetaminophen Atenolol Caffeine Carbamazepine Cotinine Diphenhydramine Metoprolol Paraxanthine
Comments:
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 1 LABORATORY SERVICES BRANCH MS4 Methuen, MA
Laboratory Fortified Blank (LFB) Results
LFB AMOUNT SPIKED ng/L
120 120 240 24 24 24 120 120
LFB RESULT
ng/L
89.0 86.7 147 20.7 21.4 13.0 91.1 120
LFB RECOVERY
%
74 72 61 86 89 54 76 100
Page 19 of 20
QC LIMITS
% 53 - 105 62 - 117 50 - 127 28 - 126 52 - 134 30 - 130 33 - 139 61 - 113
Samples in Batch:
AB91884, AB91885, AB91886, AB91887, AB91888, AB91889, AB91890, AB91891, AB91892, AB91893, AB91894, AB91895, AB91896
21050030$STA
Page 20 of 20
City of Methuen, MA (MA041210) EPA MS4 Compliance Sampling Inspection
Attachment B Laboratory Report for
E. coli Analysis
Author: LSASD Laboratory Services Branch Pages: 4
Page 29 of 30
Sampling Inspection Date: 05/25/2021
June 18, 2021
Michelle Coombs - LFSB US EPA New England R1
United States Environmental Protection Agency Laboratory Services and Applied Science Division
11 Technology Drive North Chelmsford, MA 01863-2431
Microbiology Laboratory Report
Project Number: 21050032 Project: MS4 Methuen, MA Analysis: E. Coli Defined Substrate Analyst: Jack Paar
Date Samples Received by the Laboratory: 05/25/2021
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, TC/ECColilert4.
Sample preparation and analysis was done following the EPA Region I method: Total Coliform/E. coli by Defined Substrate.
Data were reviewed in accordance with the internal verification procedures described in the EPA New England OEME Biology QA Plan.
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 617-918-8604. Sincerely,
Jack A. Paar, III Biology Laboratory Manager
Page 1 of 4
21050032ECMM
Water Microbiology Laboratory Data Qualifier Codes
J = Estimate H = Exceeds holding time I = Exceeds incubation time At = Atypical overgrowth S = Lost sample V = Insufficient sample volume TNTC = Too numerous to count MB = Media blank +++ = Positive control - - - = Negative control SP = Spiked Sample L = Estimated, result below reporting limit (RL) ND = Not Detected, result less than RL D = Lab Duplicate P = Plate counts outside preferred range FDUP = Field Duplicate collect time not specified on Chain of Custody. Field duplicate LIMS default time = 12:00AM
Page 2 of 4
21050032ECMM
Matrix: Stormwater
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 1 - NEW ENGLAND
LABORATORY SERVICES BRANCH MS4 Methuen, MA
E. Coli Defined Substrate
Sample Number
Renfrew 459MerrSt Walton PleaVal OutFall1A OutFall1B Perkins 76Swan EastSt Horne ParkStCVS 34Burn
Lab ID Date of Collection
AB91898 AB91899 AB91900 AB91901 AB91902 AB91903 AB91904 AB91905 AB91906 AB91907 AB91908 AB91909
05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21
8:25 am 8:52 am 9:15 am 9:40 am 10:12 am 10:15 am 10:45 am 11:14 am 11:35 am 12:03 pm 12:29 pm 12:55 pm
Number of Samples: 12
Date of Analysis
05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21
2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm
Compound
Concentration MPN/100 mL
E. Coli Defined Substrate E. Coli Defined Substrate E. Coli Defined Substrate E. Coli Defined Substrate E. Coli Defined Substrate E. Coli Defined Substrate E. Coli Defined Substrate E. Coli Defined Substrate E. Coli Defined Substrate E. Coli Defined Substrate E. Coli Defined Substrate E. Coli Defined Substrate
ND ND 12 16 353 218 16 1302 281 ND ND ND
RL MPN/100 mL Qualifier
4 4 4 4 4 4 4 4 4 4 4 4
Page 3 of 4
21050032ECMM
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City of Methuen, MA (MA041210) EPA MS4 Compliance Sampling Inspection
Attachment C Laboratory Report for Enterococcus Analysis
Author: LSASD Laboratory Services Branch Pages: 4
Page 30 of 30
Sampling Inspection Date: 05/25/2021
June 18, 2021
Michelle Coombs - LFSB US EPA New England R1
United States Environmental Protection Agency Laboratory Services and Applied Science Division
11 Technology Drive North Chelmsford, MA 01863-2431
Microbiology Laboratory Report
Project Number: 21050032 Project: MS4 Methuen, MA Analysis: Enterococcus in Water Analyst: Jack Paar
Date Samples Received by the Laboratory: 05/25/2021
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, ECA Enterolert3.
Sample preparation and analysis was done following the EPA Region I method: Enterococcus by Defined Substrate
Data were reviewed in accordance with the internal verification procedures described in the EPA New England OEME Biology QA Plan.
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 617-918-8604. Sincerely,
Jack A. Paar, III Biology Laboratory Manager
Page 1 of 4
21050032ENTERO
Water Microbiology Laboratory Data Qualifier Codes
J = Estimate H = Exceeds holding time I = Exceeds incubation time At = Atypical overgrowth S = Lost sample V = Insufficient sample volume TNTC = Too numerous to count MB = Media blank +++ = Positive control - - - = Negative control SP = Spiked Sample L = Estimated, result below reporting limit (RL) ND = Not Detected, result less than RL D = Lab Duplicate P = Plate counts outside preferred range FDUP = Field Duplicate collect time not specified on Chain of Custody. Field duplicate LIMS default time = 12:00AM
Page 2 of 4
21050032ENTERO
Matrix: Stormwater
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 1 - NEW ENGLAND
LABORATORY SERVICES BRANCH MS4 Methuen, MA
Enterococcus in Water
Sample Number
Renfrew 459MerrSt Walton PleaVal OutFall1A OutFall1B Perkins 76Swan EastSt Horne ParkStCVS 34Burn
Lab ID Date of Collection
AB91898 AB91899 AB91900 AB91901 AB91902 AB91903 AB91904 AB91905 AB91906 AB91907 AB91908 AB91909
05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21
8:25 am 8:52 am 9:15 am 9:40 am 10:12 am 10:15 am 10:45 am 11:14 am 11:35 am 12:03 pm 12:29 pm 12:55 pm
Number of Samples: 12
Date of Analysis
05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21 05/25/21
2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm 2:25 pm
Compound
Enterococcus in Water Enterococcus in Water Enterococcus in Water Enterococcus in Water Enterococcus in Water Enterococcus in Water Enterococcus in Water Enterococcus in Water Enterococcus in Water Enterococcus in Water Enterococcus in Water Enterococcus in Water
Concentration MPN/100mL
8 ND 4 2747 1642 616 120 2452 1089 ND 4 ND
RL MPN/100mL
4 4 4 4 4 4 4 4 4 4 4 4
Qualifier
Page 3 of 4
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