Document 2qg2YpYzaE1awXmG6zyV8kVra
UNITED STATESUNITED STATES ENVIRONRMEEGINOTN A1L
PROTECTION AGENCY
Laboratory Services and Applied Science Division
ENVIRONMENT11 TecNhorntho Chlelomsgfoyrd , MDasrsaichvuseett
s 01863-2431
ENTAL PROTECTION
Drafted Date: 5/25/2022
Finalized Date: 7/7/2022
Subject:Sampling Inspection Report
Clean Water Act - National Pollutant Discharge Elimination System
City of Lawrence, MA
From:Shannon Brunelle, Inspector
Laboratory Services and Applied Science Division (LSASD)
Field Services Branch (FSB)
Reviewed
By:Jerome Keefe, Investigations Team Leader, LSASD - FSB
To:Denny Dart, Water Compliance Section Chief,
Enforcement and Compliance Assurance Division (ECAD - EWC)
CC:Todd Borci, Inspector, ECAD - EWC
I. Facility Information
A. Facility Name: City of Lawrence, MA
B. Facility Location: 200 Common St, Lawrence, MA 01841
C. Facility Contact: Brian Pena, Water & Sewer Commissioner
bpena@cityoflawrence.com (978) 620-3110
D. NPDES Permit ID: MAR041201 (MS4)
II. Background Information
A. Date / Start time of sampling inspection: 05/24/22 09:00 AM
B. Weather conditions: 65 F, sunny
C. USEPA Representatives: Michelle Coombs, Shannon Brunelle
D. State / Local Representatives: N / A
E. Federally Enforceable Requirements Investigated:
Stormwater discharges and certain non - stormwater discharges from the City of
Lawrence, MA (the City's) 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 MAR04120.
F. Pollutants Sampled: Pharmaceuticals and Personal Care Products (PPCPs), E.
coli / Enterococcus, Ammonia (nitrogen), Total Chlorine, and
Surfactants
ED_019088A_00004633-00001
City of Lawrence, MA (MAR041201)
EPA MS4 Compliance Sampling Inspection
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 compliance sampling inspection was to identify potential illicit connections or
illegal discharges within the Lawrence, MA MS4 that may adversely impact the water quality in
the Merrimack River, Spicket River and Shawsheen River. Samples were collected from 6
locations in accordance with the FSB Investigations Team Stormwater Program Plan.
V. Permittee Details
The City of Lawrence occupies approximately 7.4 square miles in Essex County, Massachusetts,
approximately 30 miles from, north of Boston, MA. The City shares borders with the
municipalities of Methuen to the north and northwest, North Andover to the east, and Andover to
the south and southwest. According to the 2020 U.S. Census, the population of Lawrence was
89,143. The Merrimack River, Spicket River and Shawsheen River are listed as MS4 receiving
waters in the city Notice of Intent (NOI) for coverage under the permit.
VI. 05/24/22 Sampling Inspection Summary
On May 24, 2022, EPA employees Michelle Coombs and Shannon Brunelle (" the EPA Inspection
Team ") conducted an unannounced compliance sampling inspection of the Lawrence, MA MS4
at the locations described in Section VII. They were not accompanied by any city or state
representatives. The inspection started at northeastern side of the parking lot located at 1 Essex St
at approximately 09:00 AM. At the time of the inspection, the weather was sunny and
approximately 65 F.
According to National Weather Service for the Lawrence Municipal Airport (KLWM), the last
precipitation event prior to the inspection occurred on 05/22/22, with 0.22 inches recorded. There
was 0.22 inches precipitation recorded within the 72 hours before the inspection. According to the
National Weather Service, in the month of May, the City observed 1.85 inches of rain, which is
approximately 54% of the 30-year normal value of 3.39 inches. According to the US Drought
Monitor, as of 5/25/22, Essex County is experiencing abnormally dry drought conditions.
The sampling locations described in Section VII 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 E. coli,
Enterococcus and PPCPs at the EPA New England Regional Laboratory (NERL) in North
Chelmsford, MA. Table 1 below summarizes the sampling and analytical data.
Page 2 of 17
Sampling Inspection Date: May 24th, 2022
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City of Lawrence, MA (MAR041201)
EPA MS4 Compliance Sampling Inspection
VII. Description of Sampling Locations (in order of collection time)
Photographs depicting each sample location are included in Appendix A of this report.
Market01: a single, plastic, circular outfall, approximately 36 inches in diameter, located
near the eastern side of the parking lot at 1 Essex Dr. Discharge flow was approximately
5-7 gallons per minute (gpm) into Shawsheen River. Sample was collected at the mouth of
the outfall. Dark green / brown algae growth was observed on rocks and a brown film was
observed on the pipe. Trash was observed downstream of the outfall. A sewage odor was
observed upstream of the outfall. The upstream infrastructure, a manhole and a secondary
unseen source, was observed to be leaking onto the ground. Sample preserved with
ammonium acetate due to the presence of elevated levels of total chlorine.
Law02: a single concrete, circular outfall, approximately 48 inches in diameter, located at
the north - west corner of sports field behind 165 Crawford St. Discharge flow was
approximately 8-10 gallons per minute (gpm) into Shawsheen River. Sample was collected
at the mouth of the elliptical structure surrounding the outfall. A musty odor was detected.
Brown algae growth was observed inside outfall. Trash and rags were caught on the grate
at the mouth of the outfall.
SPI07: a single, concrete, rectangular culvert, approximately 6ft by 4ft in size, located near
the southeastern side of the parking lot adjacent to 14 Vine St. Discharge flow was
approximately 10 gallons per minute (gpm) into Spicket River. Sample was collected
approximately 10 feet downstream of culvert opening. Trash was observed downstream.
Some suds and brown algae growth were observed inside culvert. Dup01 collected with
sample.
MM01: a single, concrete, circular outfall, approximately 26 inches in diameter, located at
southern western corner of the bridge located in the parking lot of 550 Broadway St.
Discharge flow was approximately 8-10 gallons per minute (gpm) into Spicket River.
Sample was collected at the mouth of the outfall using sampling pole. Sudds and trash
observed downstream of outfall. Orange staining observed on pipe.
Law05A: a single, concrete, circular outfall, approximately 30 inches in diameter, located
at 1 Eaton Street, near the north - eastern side of the parking lot adjacent to the Merrimack
River. The outfall was 7/8 submerged into the Merrimack River. Sample was collected at
the mouth of the outfall. A sheen was observed on the surface of the water inside the outfall.
Law05: a single, circular outfall, approximately 48 inches in diameter, located at the left-
hand side of the parking lot entrance to 1 Eaton St. Discharge flow was approximately < 1
gallon per minute (gpm) into an unknown tributary adjacent to the merrimack river. Sample
was collected at the mouth of the outfall. A milky color and consistency was observed in
pool downstream
Outfalls not sampled:
Law07: Outfall inaccessible therefore no sample collected during sampling event.
Page 3 of 17
Sampling Inspection Date: May 24th, 2022
ED_019088A_00004633-00003
City of Lawrence, MA (MAR041201)
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.
way ZHowe
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Page 4 of 17Sampling Inspection Date: May 24th, 2022
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City of Lawrence, MA (MAR041201)
EPA MS4 Compliance Sampling Inspection
Table 1: Summary of Sampling and Analytical Data
Site ID Market01 Law02 SPI07 Dup01
Location Sample Date 05/24/22 05/24/22 05/24/22 05/24/22
Sample Time 09:05 09:35 10:52 10:52
Coordinates North42.682495 42.695437 42.715216 42.715216
(decimal
degrees) West-71.148770 -71.146327 -71.154100 -71.154100
Salinity, ppt. 0.7 0.8 0.7 N / A
YSI MeterTemperature, C13.214.316.1N / A
Conductivity, S / cm 1390 1583 1373 N / A
Field Test Kits
(mg / L)
Ammonia 0.25 0.00 0.25 N / A
Total Chlorine 0.12 0.00 0.00 N / A
Surfactants 0.25 0.50 0.50 N / A
BacteriaE. coli 1642 3683 318 N / A
(MPN / 100mL) Enterococcus 185 987 96 N / A
Cotinine 6.0 1.8 7.5 8.3
Acetaminophen 300 29 32 35
Paraxanthine 100 7.4 3.8 4.1
PPCPs (ng / L)Atenolol 8.5 ND ND ND
Caffeine 130 48 32 35
Metoprolol 6.3 2.5 ND ND
Diphenhydramine 1.8 0.56 ND ND
Abbreviations and Notes:
Carbamazepine 3.2 16 0.45 0.48
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 / Fecal Coliform: Red > 10,000 col / 100ml, Orange > 1,260 col / 100ml, Yellow > 410 col / 100ml, Black < 410 col / 100ml
Entero: Red 1,000 col / 100ml, Orange > 350 Yellow > 130 col / 100ml, Black < 130 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 2100x the RL; Pink > 10x the RL; Light Pink 23x 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.
Page 5 of 17Sampling Inspection Date: May 24th, 2022
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City of Lawrence, MA (MAR041201)
EPA MS4 Compliance Sampling Inspection
Table 1: Summary of Sampling and Analytical Data, cont.
Site ID MM01 Law05A Law05
Location Sample Date 05/24/22 05/24/22 05/24/22
Sample Time 11:45 12:40 12:55
Coordinates North42.714613 42.692848, 42.692145
(decimal
degrees) West-71.178635 -71.175273 -71.175708
Salinity, ppt.0.4N / AN / A
YSI MeterTemperature, C14.2N / AN / A
Conductivity, S / cm875N / AN / A
Field Test Kits
(mg / L)
Ammonia 0.25 0.25 0.25
Total Chlorine 0.00 0.00 0.00
Surfactants 0.25 0.25 0.35
Bacteria E. coliND 16 6932
(MPN / 100mL) Enterococcus10ND135
Cotinine 0.76 1.9 4.6
Acetaminophen ND ND 170
Paraxanthine ND 8.0 21
PPCPs (ng / L)
Atenolol ND 13 4.2
Caffeine ND 23 110
Metoprolol ND 11 3.5
Diphenhydramine ND 6.5 0.48
Abbreviations and Notes:
Carbamazepine 0.95 3.7 1.5
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 / Fecal Coliform: Red > 10,000 col / 100ml, Orange > 1260 col / 100ml, Yellow > 410 col / 100ml, Black < 410 col / 100ml
Entero: Red 1,000 col / 100ml, Orange > 350 Yellow > 130 col / 100ml, Black < 130 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 RI; Pink > 10x the RL; Light ight Pink > 3x th 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.
Page 6 of 17Sampling Inspection Date: May 24th, 2022
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EPA MS4 Compliance Sampling Inspection
VIII. Appendix
Appendix A: Photograph Log
IX. 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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EPA MS4 Compliance Sampling Inspection
Appendix A
Photograph Log
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Sampling Inspection Date: May 24th, 2022
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EPA MS4 Compliance Sampling Inspection
Market01 (photo taken 05/24/22 at 09:05 AM) Outfall located near the eastern side of the parking lot at 1
Essex Dr into an unnamed stream into the Shawsheen River. Sample point is indicated by a red x.
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Sampling Inspection Date: May 24th, 2022
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EPA MS4 Compliance Sampling Inspection
Law02 (photo taken 05/24/22 at 09:35 AM) located at the north - west corner of sports field behind 165
Crawford St into the Shawsheen River. Sample point is indicated by a red x.
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EPA MS4 Compliance Sampling Inspection
SPI07 (photo taken 05/24/22 at 10:52 AM), located near the southeastern side of the parking lot adjacent
to 14 Vine St into the Spicket River. Sample point is indicated by a red x.
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Sampling Inspection Date: May 24th, 2022
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City of Lawrence, MA (MAR041201)
EPA MS4 Compliance Sampling Inspection
MM01 (photo taken 05/24/22 at 11:45 AM) located at southern western corner of the bridge located in the
parking lot of 550 Broadway St into the Spicket River. Sample point is indicated by a red x.
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Sampling Inspection Date: May 24th, 2022
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City of Lawrence, MA (MAR041201)
EPA MS4 Compliance Sampling Inspection
Law05A (photo taken 05/24/22 at 12:40 PM) located at 1 Eaton Street, near the north - eastern side of the
parking lot adjacent to the Merrimack River into the Merrimack River. Sample point is indicated by a red x.
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Sampling Inspection Date: May 24th, 2022
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City of Lawrence, MA (MAR041201)
EPA MS4 Compliance Sampling Inspection
Law05 (photo taken 05/24/22 at 12:55 PM) located at the left - hand side of the parking lot entrance to 1
Eaton St. into an unknown tributary. Sample point is indicated by a red x.
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Sampling Inspection Date: May 24th, 2022
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City of Lawrence, MA (MAR041201)
EPA MS4 Compliance Sampling Inspection
Attachment A
Laboratory Report for
Source Tracking Analysis
Author: LSASD Laboratory Services Branch
Pages:
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