HomeMy Public PortalAboutSemi Annual Report, July 1 to December 31, 2021Metropolitan St. Louis
Sewer District
2350 Market Street
St. Louis, MO 63103-2555
Phone: 314.768.6200
wvww.stlntsti.com
February 14, 2022
Chief, Water Enforcement and Compliance Assurance Branch
Water and Wetlands Protection Division
U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 7
11201 Renner Blvd.
Lenexa, KS 66219
RE: Metropolitan St. Louis Sewer District Consent Decree
Semi -Annual Report — Reporting Period: July 1, 2021 to December 31, 2021
Greetings:
The Metropolitan St. Louis Sewer District (MSD) is submitting this Semi -Annual Report
pursuant to Consent Decree No. 4:07 -CV -1120 (CEJ) entered April 27, 2012. Pursuant to
the Consent Decree, this report provides data for Constructed SSO Activations, Building
Backups, and Sanitary Sewer Overflows.
Please find attached the following submissions:
Semi -Annual Report — February 15, 2022
Appendix A - Constructed SSO Activations (07/01/2021-12/31/2021)
Table A-1: Constructed SSO Activation Data
Table A-2: Constructed SSO Activation Data — Excluded Events
Appendix B - Building Backups (07/01/2021-12/31/2021)
Table B-1: Building Backups
Appendix C - Sanitary Sewer Overflows (07/01/2021-12/31/2021)
Table C-1: Sanitary Sewer Overflows
If you have questions related to this report which are not subject to paragraph 129 of the
Consent Decree, please send them to me or by electronic mail at:
UVVuestions(stlmsd.com
Sincerely,
usan M. Myers
General Counsel
Metropolitan St. Louis Sewer District
Enclosures: Certification
Report Distribution
Electronic Documentation on Enclosed Disk
Metropolitan St. Louis Sewer District
Semi -Annual Report
CERTIFICATION
I certify under penalty of law that this document and all attachments were prepared under
my direction or supervision in accordance with a system designed to assure that qualified
personnel properly gather and evaluate the information submitted. The information
submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am
aware that there are significant penalties for submitting false information, including the
possibility of fine and imprisonment for knowing violations.
.�. DATE: Z /7/at)-4,
BRIAN HOELSCHER, P.E.
Executive Director
Metropolitan St. Louis Sewer District
Metropolitan St. Louis Sewer District
Semi -Annual Report
MSO
REPORT DISTRIBUTION
United States:
Chief, Environmental Enforcement Section
Environment and Natural Resources Division
U.S. Department of Justice
Box 7611 Ben Franklin Station
Washington, D.C. 20044-7611
Re: DOJ No. 90-5-1-1-08111
EPA:
Chief, Water Enforcement and Compliance
Assurance Branch
Water and Wetlands Protection Division
U.S. Environmental Protection Agency,
Region 7
11201 Renner Blvd.
Lenexa, KS 66219
David Cozad
Regional Counsel
Office of Regional Counsel
U.S. Environmental Protection Agency,
Region 7
11201 Renner Blvd.
Lenexa, KS 66219
State of Missouri:
Chief Counsel
Agriculture and Environment Division
State of Missouri Office of Attorney General
207 W. High Street
Jefferson City, MO 65102
Chief, Water Pollution Compliance and
Enforcement Section
Missouri Department of Natural Resources
P.O. Box 176
1101 Riverside Dr.
Jefferson City, MO 65101
Director, St. Louis Regional Office
Missouri Department of Natural Resources
7545 South Lindbergh Blvd., Suite 210
St. Louis, MO 63125
Coalition:
Jared Opsal
Executive Director
Missouri Coalition for the Environment
725 Kingsland Ave, Suite 100
St. Louis, MO 63130
Maxine I. Lipeles
Elizabeth J. Hubertz
Interdisciplinary Environmental Clinic
Washington University School of Law
One Brookings Drive
Campus Box 1120
St. Louis, MO 63130
MSD:
Executive Director
Metropolitan St. Louis Sewer District
2350 Market Street
St. Louis, MO 63103-2555
General Counsel
Metropolitan St. Louis Sewer District
2350 Market Street
St. Louis, MO 63103-2555
Director of Engineering
Metropolitan St. Louis Sewer District
2350 Market Street
St. Louis, MO 63103-2555
Metropolitan St. Louis Sewer District
Semi -Annual Report
ELECTRONIC DOCUMENTATION ON ENCLOSED DISK
REPORT PDF
2021 12 Semi.pdf
APPENDIX A FOLDER
2021 12 Semi Al -2 sso activation.xls
APPENDIX B FOLDER
2021 12 Semi B1 backup.xls
APPENDIX C FOLDER
2021 12 Semi C1 known sso.xls
Reporting Period – July 1, 2021 to December 31, 2021
Consent Decree Due Date – February 15, 2022
Metropolitan St. Louis Sewer District
SEMI-ANNUAL REPORT
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
TABLE OF CONTENTS
1.0 INTRODUCTION......................................................................................... 1
2.0 CONSTRUCTED SSO ACTIVATION DATA .............................................. 2
3.0 BUILDING BACKUP DATA ....................................................................... 8
4.0 SANITARY SEWER OVERFLOW DATA ................................................. 10
5.0 CONCLUSION .......................................................................................... 13
LIST OF APPENDICES
APPENDIX A: CONSTRUCTED SSO ACTIVATIONS
Table A-1 – Constructed SSO Activation Data
Table A-2 – Constructed SSO Activation Data – Excluded Events
APPENDIX B: BUILDING BACKUPS
Table B-1 – Building Backups
APPENDIX C: SANITARY SEWER OVERFLOWS
Table C-1 – Sanitary Sewer Overflows
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
1
1.0 INTRODUCTION
A Consent Decree, with an Effective Date of April 27, 2012, was entered into between the
United States of America, the Missouri Coalition for the Environment Foundation, and the
Metropolitan St. Louis Sewer District (“MSD”) in the matter of The United States, et al. v.
The Metropolitan St. Louis Sewer District, Case No. 4:07-CV-1120-CEJ (E.D. Mo.).
MSD prepared this Semi-Annual Report in compliance with paragraph VIII.72 of the
Consent Decree. The submission date of this Semi-Annual Report is February 15, 2022
and provides reporting data for the six-month period of July 1, 2021 to December 31, 2021.
This Semi-Annual Report includes the following:
• Constructed SSO Activation Data (satisfies Consent Decree requirement VIII.72.a)
• Building Backup Data (satisfies Consent Decree requirement VIII.72.b)
• Sanitary Sewer Overflow Data (satisfies Consent Decree requirement VIII.72.c)
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
2
2.0 CONSTRUCTED SSO ACTIVATION DATA
Pursuant to the requirements set forth in paragraph VIII.72.a of the Consent Decree, the
Constructed SSO discharge activations that occurred during the six-month reporting period
covered in this Semi-Annual Report are listed in Appendix A.
The Constructed SSO discharge activation data for MSD’s service area is recorded in a
Telog software system. The Telog software has embedded alert formulas that are used to
validate field equipment alarms. Site inspection following field equipment alarms is part
of MSD’s validation process. Constructed SSO discharge activations determined to be
valid are identified in Table A-1. Constructed SSO discharge activations determined to be
excluded from the valid data are identified in Table A-2. Activations were excluded from
the valid data because: (1) the activations did not meet the pre-set overflow level and
voltage requirements for the Telog formula; or (2) a site inspection determined that the
activation was not valid based on certain conditions at the outfall (e.g. low battery, bad
sensor, debris stuck in the valve, etc.).
The Constructed SSO activation data included in this report detail activations of the field
equipment alarms. Please note, however, that there will be instances where there may be
more than one field equipment alarm for a single Constructed Sanitary Sewer Overflow or
discharge. This situation occurs from time to time due to intermittent or variable flow
conditions within the Sewer System. More particularly, the rubber duck bill valves open
and close depending on the amount of pressure provided by the flows within the Sewer
System.
For the Constructed SSO discharge activation data provided, MSD has included: (i) the
Constructed SSO Outfall number; (ii) address; (iii) the start date of the event; (iv) the event
duration; and (v) the estimated volume, if known. The column headings of Table A-1 and
Table A-2 in Appendix A represent the following information:
Bypass Number
The bypass number provided is designated by MSD’s Constructed SSO Outfall
Inventory.
Address, Zip Code
The address and zip code of the site provided is designated by MSD’s Constructed
SSO Outfall Inventory.
Event Start Date, Event End Date
These are the date/timestamps representing the start and stop time recorded for this
event by the Telog software.
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
3
Event Duration (day hh:mm:ss)
This is the information recorded by the Telog software and represents the duration
time of the event. The Telog software measures this time in two and one half
minute increments.
Estimated Volume (gallons)
The estimated volume is reported as “unknown” for the majority of valid
activations that occurred during this reporting period. Most of the existing
monitoring equipment only measures water level, not velocity, which makes any
flow volume calculation inaccurate and highly unreliable. All new and replacement
flow monitors installed after April 27, 2012 include the capability to measure level
and velocity so that a flow rate and subsequent volume may be calculated.
During the previous semi annual reporting period (January 1, 2021 – June 30, 2021), an
activation was reported at BP-115 Cricket on June 9, 2021 and June 10, 2021. Upon further
review of the data and follow up field investigation, MSD determined that the activation
was invalid due to an equipment malfunction.
MSD provides estimated discharge volume when both level and velocity outputs indicate
predictable flow duration curve response during a valid event. Although estimated
discharge volumes can be calculated, the quality of the data is questionable due to the less
than ideal pipe characteristics for placing the flow meter. More particularly and according
to the manufacturer’s recommendations for installation, the flow meter provides the best
results in flow streams with uniform flow (not intermittent or variable flow conditions).
The manufacturer of the flow meter advises that poor channel conditions may cause
incorrect or erratic readings. Areas to avoid pursuant to the manufacturer are:
• Outfalls or channel intersections
• Flow streams at very low levels with high flow rates
• Turbulence
• Channel sections that are apt to collect debris or silt
• Depths that consistently run below 1 inch
All of the flow meter installations are in areas exhibiting most, if not all, of these poor
channel conditions. As a result, the reported estimated volumes are likely inaccurate. As
of December 31, 2021, MSD has installed twenty-five (25) flow monitors with the
capability to measure level and velocity.
In some instances, the flow data was found to be completely unacceptable and therefore,
was not used for estimating discharge volume. An example of this would be when the
meter records negative or zero-value velocities due to backflow or turbulent conditions.
Another example would be when the meter records erratic level values due to a faulty
sensor. MSD, however, makes good faith and reasonable efforts to obtain accurate volume
data whenever possible.
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
4
Pursuant to subparagraph V.C.15.e of the Consent Decree and in the event MSD cannot
obtain accurate velocity data within six months of installation, the equipment can revert to
the level-only monitoring setup. Although MSD identified flow meter installations
meeting this condition more than a year ago (i.e., MSD was unable to obtain accurate
velocity data), MSD elected to leave all flow monitors installed to date in service. MSD
has historically gone above and beyond Consent Decree obligations regarding the
maintenance of the flow meters at these Constructed SSO locations. Due to the concern
over flow meter data quality, MSD has maintained two separate systems at the Constructed
SSO locations (flow meters and level-only sensors with rubber duck bill valve sensors).
However, as the number of area velocity meter locations increase and the amount of
accurate velocity data decreases, MSD believes that it is prudent to reduce the time and
effort spent on maintaining two separate systems. Moving forward, MSD will invoke
subparagraph V.C.15.e of the Consent Decree by actively removing the flow meters in
locations that do not provide accurate velocity data within six months of installation. Based
on our most recent evaluation, MSD has identified a number of flow meter installations
that cannot obtain accurate velocity data and will be removed pursuant to the Consent
Decree.
MSD did not remove any flow meters during this reporting period, July 1, 2021 through
December 31, 2021 as a result of inaccurate velocity data.
MSD previously removed flow meters from these locations:
• BP-001 at 4705 Upshaw – The flow monitor capable of measuring level and
velocity was installed on February 5, 2013 and removed on April 14, 2017.
• BP-004 at 1 Cedar Crest – The flow monitor capable of measuring level and
velocity was installed on September 16, 2015 and removed on April 14, 2017.
• BP-013 at 842 Louwen Drive – The flow monitor capable of measuring level and
velocity was installed on April 3, 2015 and removed on December 7, 2016.
• BP-014 at 100 McKnight Rd – The flow monitor capable of measuring level and
velocity was installed on June 1, 2015 and removed on April 19, 2017.
• BP-017 at 126 Pointer Ln – The flow monitor capable of measuring level and
velocity was installed on October 22, 2015 and removed on August 2, 2017.
• BP-024 at 2338 Goodale – The flow monitor capable of measuring level and
velocity was installed on June 12, 2015 and removed on August 19, 2016.
• BP-036 at 1593 Narrows – The flow monitor capable of measuring level and
velocity was installed on September 20, 2014 and removed on April 12, 2017.
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
5
• BP-069 at 1217 Crested View Drive – The flow monitor capable of measuring
level and velocity was installed on May 23, 2018 and removed on July 1, 2019.
• BP-087 at 11749 Westport Crossing Dr – The flow monitor capable of
measuring level and velocity was installed on January 27, 2016 and removed on
July 12, 2019.
• BP-110 at 610 St. Marie – The flow monitor capable of measuring level and
velocity was installed on April 18, 2018 and removed on May 29, 2020.
• BP-141 at 245 Palm Dr – The flow monitor capable of measuring level and
velocity was installed on December 14, 2012 and removed on August 3, 2017.
• BP-145 at 2529 Sims Ave – The flow monitor capable of measuring level and
velocity was installed on January 7, 2016 and removed on August 2, 2017.
• BP-155 at 23 Warson Terrace – The flow monitor capable of measuring level and
velocity was installed on April 8, 2019 and removed on May 4, 2020.
• BP-170 at 10042 Conway Rd – The flow monitor capable of measuring level and
velocity was installed on December 11, 2012 and removed on April 13, 2017.
• BP-198 at 1324 Rock Hill Road – The flow monitor capable of measuring level
and velocity was installed on April 10, 2015 and removed on August 30, 2016.
• BP-287 at 10063 Coburgh Lands – The flow monitor capable of measuring level
and velocity was installed on January 30, 2016 and removed on April 14, 2017.
• BP-305 at 701 Marvin – The flow monitor capable of measuring level and velocity
was installed on December 14, 2012 and removed on April 14, 2017.
• BP-348 at 24 Overbrook – The flow monitor capable of measuring level and
velocity was installed on February 29, 2016 and removed on June 27, 2019.
• BP-349 at 25 Overbrook Lane – The flow monitor capable of measuring level and
velocity was installed on March 1, 2016 and removed on August 30, 2016.
• BP-370 at 7501 Capilia Dr – The flow monitor capable of measuring level and
velocity was installed on August 21, 2015 and removed on June 5, 2018.
• BP-382 at 9415 Gates Manor – The flow monitor capable of measuring level and
velocity was installed on July 16, 2015 and removed on April 12, 2017.
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
6
• BP-421 at 8507 Crixdale – The flow monitor capable of measuring level and
velocity was installed on March 11, 2013 and removed on April 19, 2017.
• BP-440 at 219 Old Orchard – The flow monitor capable of measuring level and
velocity was installed on September 25, 2015 and removed on March 4, 2020.
• BP-454 at 7711 St. Charles Rock Road – The flow monitor capable of measuring
level and velocity was installed on May 11, 2018 and removed on July 11, 2019.
• BP-457 at 7700 Underhill Drive – The flow monitor capable of measuring level
and velocity was installed on July 2, 2014 and removed on July 12, 2019.
• BP-515 at 9443 Kirchner – The flow monitor capable of measuring level and
velocity was installed on June 22, 2015 and removed on March 10, 2020.
• BP-516 at 2559 Rolens – The flow monitor capable of measuring level and velocity
was installed on October 18, 2014 and removed on August 22, 2016.
• BP-527 at 8240 Lindbergh Boulevard – The flow monitor capable of measuring
level and velocity was installed on December 14, 2012 and removed on August 19,
2016.
• BP-545 at 1100 Des Peres Drive – The flow monitor capable of measuring level
and velocity was installed on June 10, 2013 and removed on September 15, 2016.
• BP-591 at 10201 Lylewood Drive – The flow monitor capable of measuring level
and velocity was installed on June 12, 2015 and removed on July 9, 2019
• BP-597 at 4429 Rolling Drive – The flow monitor capable of measuring level and
velocity was installed on April 19, 2013 and removed on October 5, 2016.
• BP-599 at 8711 Pardee Lane – The flow monitor capable of measuring level and
velocity was installed on April 10, 2019 and removed on July 17, 2019.
• BP-618 at 9058 Rosemary Avenue – The flow monitor capable of measuring level
and velocity was installed on December 3, 2014 and removed on December 30,
2016.
• BP-623 at 8024 Walinka – The flow monitor capable of measuring level and
velocity was installed on July 21, 2016 and removed on April 13, 2017.
• BP-624 at 8901 Broadway – The flow monitor capable of measuring level and
velocity was installed on December 8, 2014 and removed on August 19, 2016.
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
7
• BP-634 at 7575 Oxford – The flow monitor capable of measuring level and
velocity was installed on July 3, 2013 and removed on August 19, 2016.
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
8
3.0 BUILDING BACKUP DATA
Pursuant to Consent Decree requirement VIII.72.b, Building Backups that occurred during
the six-month period covered in this Semi-Annual Report are listed in Appendix B.
The Building Backup data included in Table B-1 was generated from MSD’s computerized
maintenance management system. Due to certain limitations with MSD’s computerized
maintenance management system, however, a Building Backup in a multi-unit building
with different numerical street addresses for each unit within the same building (e.g., an
apartment building) are reported as separate occurrences. MSD reports these Building
Backups as separate occurrences even though the Building Backup occurred in a single
building at the same time. During this reporting period, there were also Building Backups
which resulted from water main breaks. Those Building Backups are not included in this
report because an investigation by MSD led to the conclusion that these backups were the
result of private property defects and did not result from blockages, flow conditions or
malfunctions within the Sewer System. Additionally, this data includes occurrences that
were the result of the failure of a sewer separation device within a private lateral. Although
these backups are the result of a failed sewer separation device, they are reported as
Building Backups when caused by blockages, flow conditions, or malfunctions within the
Sewer System.
Ongoing investigations may result in the cause or causes of certain Building Backups to be
reclassified (i.e. blocked main, sewer separation failure, overcharged main, pump station
failure, etc.). These changes will not be addressed in the narrative, however may be
apparent in future reports should reoccurring Building Backups happen at a given address.
When Building Backups occur in the last weeks of a reporting period, they are sometimes
not resolved in sufficient time to be included in their respective Semi-Annual Report.
Customers have 30 days to report a possible backup and MSD has 30 days to evaluate the
backup claim. This total of 60 days exceeds the reporting deadline for Semi-Annual
Reports that are due 45 days after the reporting period. MSD identified three (3) Building
Backups that occurred during the July 1, 2021 to December 31, 2021 reporting period that
were not included in the August 15, 2021 Semi-Annual Report. These three (3) Building
Backups are included in Table B-1 of this report and are identified with an asterisk.
For the Building Backup data provided, MSD has included: (i) street address at which the
Building Backup occurred; (ii) identification of the Watershed/Treatment Plant Service
Area in which the Building Backup occurred; (iii) cause or causes of the Building Backup,
if known; (iv) call date(s) of any Building Backup(s) that have previously occurred at the
same address since the Effective Date of April 27, 2012; and (v) an indication for those
Building Backups that have resulted in a discharge to waters of the United States
(“WOTUS”). The column headings of Table B-1 in Appendix B represent the following
information:
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
9
Service Request Call Date
This is the date that MSD received a call from a customer reporting a building
backup as recorded in MSD’s computerized maintenance management system.
Occurred During Current Reporting Period?
This column identifies those building backups that occurred during the current
reporting period in order to denote those that previously occurred at the same
address since the Effective Date of April 27, 2012.
Street Number, Street Name, Zip Code
This is the location information that has been recorded in MSD’s computerized
maintenance management system by MSD customer care staff. The service address
information provided includes a street number, street name and zip code.
Watershed/Treatment Plant Service Area
The watershed indicated is a wastewater collection area upstream of one (1) of the
seven (7) MSD wastewater treatment plants.
Service Request Work Order Cause
This is the cause or resolution information which has been recorded by MSD staff
in MSD’s computerized maintenance management system.
Discharge to Waters of the US?
This column indicates whether a Building Backup event resulted in a discharge to
the WOTUS. An example of how this could occur is if a homeowner has a sump
pump in their basement for the purpose of removing groundwater and therefore the
homeowner pumps the sewage to the WOTUS.
In table B-1 it is noted that between June 29, 2021 and October 11, 2021, Building
Backups occurred 11 times at 4919 Holly Hills, 63109. This property is connected to a
combined sewer system in the Lemay Treatment service area, and each occurrence was
due to instances when the combined sewer main was overcharged. As a result of this,
MSD installed a check valve on the property. The check valve installation was
completed on November 18, 2021, and since then, no additional Building Backups have
been reported to MSD by the property owner at this address.
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
10
4.0 SANITARY SEWER OVERFLOW DATA
Pursuant to Consent Decree requirement VIII.72.c, all known Sanitary Sewer Overflows
that occurred during the six-month reporting period covered by this Semi-Annual Report
are listed in Appendix C.
The known Sanitary Sewer Overflow data (other than Constructed SSO activations and
Building Backups) is included in Table C-1 and was generated from MSD’s computerized
maintenance management system. Per the Consent Decree definition of Sanitary Sewer
Overflow, the data only includes overflows, spills, diversions and releases of wastewater
from or caused by MSD’s sanitary sewer system. The data does not include overflows for
MSD’s combined sewer system. Copies of all unpermitted CSO discharge reports
submitted to MDNR will be provided with the Consent Decree Annual Report.
MSD, on occasion, receives initial notification of a Sanitary Sewer Overflow occurrence
reported by an MSD customer or by a third party. MSD responds as expeditiously as
possible, normally within four (4) hours. Instances with extended response times are
typically due to the Sanitary Sewer Overflow being first identified as a different problem,
such as an odor complaint from a customer.
For the Sanitary Sewer Overflow data provided, MSD has included: (i)
Watershed/Treatment Plant Service Area where the Sanitary Sewer Overflow occurred; (ii)
location description; (iii) facility type; (iv) volume, if known; (v) reason such as blockage,
broken pipe, weather conditions, power outage, vandalism, third-party cause, Mississippi
River backflow; (vi) cause such as debris, grit, grease, high river flow; (vii) the amount of
time to commence investigation of each SSO, as reported; and (viii) the amount of time to
correct and/or cleanup each SSO, as necessary. The column headings of Table C-1 in
Appendix C represent the following information:
Work Order Start Date
This is the date of the initial notification to MSD’s Division of Environmental
Compliance (“DEC”) after an MSD Operations Crew has arrived onsite and
determined that an SSO occurred. DEC records information related to the overflow
using a work order in MSD’s computerized maintenance management system.
Watershed/Treatment Plant Service Area
The watershed indicated is a wastewater collection area upstream of one (1) of the
seven (7) MSD wastewater treatment plants.
Service Address
This is the work order service address location information that has been recorded
in MSD’s computerized maintenance management system. This information
represents the best address that a MSD Staff member who responded on site
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
11
determined relates to the overflow. The service address includes a street number,
street name and zip code.
Location Description
The location description listed is an MSD collection system structure such as a
manhole, gravity main or pump station. These MSD collection system structures
denote respective GIS coordinates, when available.
Facility Type
The facility type indicates the type of MSD collection system structure determined
to be source of the Sanitary Sewer Overflow.
Estimated Volume (gallons)
The estimated volume of the Sanitary Sewer Overflow is indicated in gallons, if
known. The estimated volume provided is determined to the best of MSD’s ability,
which accounts for the period of time MSD knew about the overflow and the
estimated dry weather flow for the sewer from which the Sanitary Sewer Overflow
is released. Other factors are used to make this estimation when appropriate.
Reason/Cause
The reason and the cause for the Sanitary Sewer Overflow are indicated in this
combined field under a single column heading.
Time To Commence Investigation (day hh:mm)
This is the duration of time starting at the initial notification of an SSO up until an
MSD Operations Crew has arrived on site to investigate the problem. If the time
to commence the investigation is zero that is due to the fact that the Sanitary Sewer
Overflow was discovered by an MSD crew or staff member.
Time To Correct and/or Cleanup (day hh:mm)
This is duration of time starting from when the MSD Operations Crew arrives on
site to correct the problem and/or cleanup (as necessary) until the time the Sanitary
Sewer Overflow as defined by the Consent Decree has ceased and/or the cleanup
effort is completed whichever is later.
During this current reporting period there was one sanitary sewer failure event that resulted
in the release of wastewater at multiple locations. Although this event was attributable to
a single sanitary sewer failure, MSD has separately listed each of the multiple locations
having a wastewater release. During the period of July 1, 2021 to December 31. 2021, a
total of forty-three (43) events caused overflows at fifty-seven (57) locations. The details
of the single event that overflowed at more than one location is described as follows:
• On July 19, 2021 and July 21, 2021, a force main and gravity sewers in the Missouri
River Treatment Plant service area overflowed due to a break that occurred in the
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
12
force main. The corrective action to repair the broken force main required taking
pump stations off line, which caused the overflows from the gravity sewers to
occur. The broken force main and the pump stations being taken off line resulted
in sewage being released from fifteen (15) locations (E73451, GIS-10379496, GIS-
1544348, GIS-1544347, GIS-1544346, GIS-1544129, GIS-1481442, GIS-
1552359, GIS-1481441, GIS-1552370, GIS-1552360, GIS-1544128, GIS-
1544127, GIS-1544126 and GIS-1641116). Fifteen (15) entries on Table C-1 are
related to this one (1) event.
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
13
5.0 CONCLUSION
MSD has provided the information contained in this Semi-Annual Report to comply with
paragraph VIII.72 of the Consent Decree Case No. 4:07-CV-1120-CEJ. Any questions
regarding the content of this Semi-Annual Report can be directed to MSD’s Legal
Department. If you have questions related to this report which are not subject to paragraph
XVII.129 of the Consent Decree, please send them by letter or email to:
Susan M. Myers
General Counsel
Metropolitan St. Louis Sewer District
2350 Market Street
St. Louis, MO 63103
or
Electronic mail at: CDQuestions@stlmsd.com
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
APPENDIX A: CONSTRUCTED SSO ACTIVATIONS
CONSTRUCTED SSO ACTIVATIONS
Attached and Spreadsheet File Provided on Enclosed Disk
Metropolitan St. Louis Sewer District
Semi-Annual Report
Bypass
Number Address Zip Code Event Start Date Event End Date
Event Duration
(day hh:mm:ss)
Estimated
Volume
(gallons)
BP-001 4705 UPSHAW 63121 7/10/2021 14:35 7/10/2021 15:22 0:47:30 N/A
BP-001 4705 UPSHAW 63121 8/30/2021 15:22 8/30/2021 15:45 0:22:30 N/A
BP-003 36 BRIARCLIFF DRIVE 63124 8/26/2021 15:52 8/26/2021 16:32 0:40:00 17,132
BP-004 1 CEDAR CREST 63132 8/26/2021 15:52 8/26/2021 16:00 0:07:30 N/A
BP-004 1 CEDAR CREST 63132 8/26/2021 16:05 8/26/2021 16:35 0:30:00 N/A
BP-013 842 LOUWEN DRIVE 63124 7/25/2021 7:37 7/25/2021 7:57 0:20:00 N/A
BP-013 842 LOUWEN DRIVE 63124 7/25/2021 8:02 7/25/2021 8:55 0:52:30 N/A
BP-013 842 LOUWEN DRIVE 63124 8/8/2021 16:45 8/8/2021 17:22 0:37:30 N/A
BP-013 842 LOUWEN DRIVE 63124 8/26/2021 16:02 8/26/2021 17:07 1:05:00N/A
BP-013 842 LOUWEN DRIVE 63124 8/27/2021 14:15 8/27/2021 14:37 0:22:30N/A
BP-013 842 LOUWEN DRIVE 63124 8/31/2021 22:55 8/31/2021 23:30 0:35:00N/A
BP-013 842 LOUWEN DRIVE 63124 9/21/2021 4:17 9/21/2021 5:00 0:42:30 N/A
BP-016 14 OAKLEIGH 63124 7/10/2021 1:07 7/10/2021 1:15 0:07:30 3,364
BP-016 14 OAKLEIGH 63124 8/26/2021 15:52 8/26/2021 16:47 0:55:00 29,491
BP-016 14 OAKLEIGH 63124 8/31/2021 22:40 8/31/2021 22:50 0:10:00 1,864
BP-017 126 POINTER LANE 63124 7/25/2021 8:15 7/25/2021 8:25 0:10:00 N/A
BP-024 2338 GOODALE 63114 7/10/2021 0:52 7/10/2021 1:25 0:32:30 N/A
BP-024 2338 GOODALE 63114 7/10/2021 14:27 7/10/2021 15:45 1:17:30 N/A
BP-024 2338 GOODALE 63114 8/8/2021 16:42 8/8/2021 16:55 0:12:30 N/A
BP-024 2338 GOODALE 63114 9/21/2021 4:02 9/21/2021 4:12 0:10:00 N/A
BP-036 1593 NARROWS 63017 7/1/2021 6:05 7/1/2021 6:37 0:32:30 N/A
BP-036 1593 NARROWS 63017 7/1/2021 7:17 7/1/2021 7:50 0:32:30 N/A
BP-036 1593 NARROWS 63017 9/21/2021 4:00 9/21/2021 4:57 0:57:30 N/A
BP-145 2529 SIMS AVENUE 63114 7/10/2021 1:00 7/10/2021 1:25 0:25:00 N/A
BP-145 2529 SIMS AVENUE 63114 7/10/2021 14:37 7/10/2021 15:40 1:02:30N/A
BP-145 2529 SIMS AVENUE 63114 8/12/2021 19:12 8/12/2021 19:30 0:17:30N/A
BP-145 2529 SIMS AVENUE 63114 11/17/2021 14:45 11/17/2021 15:07 0:22:30 N/A
BP-145 2529 SIMS AVENUE 63114 12/20/2021 10:17 12/20/2021 10:20 0:02:30 N/A
BP-145 2529 SIMS AVENUE 63114 12/28/2021 11:07 12/28/2021 11:42 0:35:00 N/A
BP-155 23 WARSON TERRACE 63124 7/10/2021 1:15 7/10/2021 2:32 1:17:30 N/A
BP-155 23 WARSON TERRACE 63124 7/25/2021 8:10 7/25/2021 8:40 0:30:00 N/A
BP-155 23 WARSON TERRACE 63124 8/12/2021 19:27 8/12/2021 20:15 0:47:30 N/A
BP-155 23 WARSON TERRACE 63124 8/26/2021 16:20 8/26/2021 16:25 0:05:00 N/A
BP-155 23 WARSON TERRACE 63124 8/26/2021 16:32 8/26/2021 17:07 0:35:00 N/A
BP-155 23 WARSON TERRACE 63124 8/31/2021 22:57 8/31/2021 23:50 0:52:30 N/A
BP-155 23 WARSON TERRACE 63124 9/4/2021 5:10 9/4/2021 5:50 0:40:00 N/A
BP-155 23 WARSON TERRACE 63124 9/21/2021 4:17 9/21/2021 5:10 0:52:30 N/A
BP-156 801 ALEXANDRA DRIVE 63122 7/10/2021 15:25 7/10/2021 15:32 0:07:30 635
BP-156 801 ALEXANDRA DRIVE 63122 8/30/2021 15:05 8/30/2021 15:25 0:20:00 1,094
BP-158 1182 GLENWAY DRIVE 63122 7/10/2021 15:25 7/10/2021 16:15 0:50:00 69,654
BP-158 1182 GLENWAY DRIVE 63122 8/30/2021 15:10 8/30/2021 15:40 0:30:00 33,212
BP-158 1182 GLENWAY DRIVE 63122 9/21/2021 4:30 9/21/2021 5:05 0:35:00 26,047
BP-170 10042 CONWAY ROAD 63124 7/10/2021 1:10 7/10/2021 2:02 0:52:30 N/A
BP-170 10042 CONWAY ROAD 63124 7/10/2021 2:07 7/10/2021 2:32 0:25:00 N/A
BP-170 10042 CONWAY ROAD 63124 7/10/2021 15:40 7/10/2021 16:10 0:30:00 N/A
BP-170 10042 CONWAY ROAD 63124 7/25/2021 8:02 7/25/2021 8:22 0:20:00 N/A
BP-170 10042 CONWAY ROAD 63124 7/25/2021 8:55 7/25/2021 8:57 0:02:30 N/A
BP-170 10042 CONWAY ROAD 63124 8/12/2021 19:22 8/12/2021 19:57 0:35:00 N/A
BP-170 10042 CONWAY ROAD 63124 9/21/2021 4:22 9/21/2021 5:12 0:50:00 N/A
BP-194 201 NEWPORT 63119 8/30/2021 15:12 8/30/2021 15:57 0:45:00 N/A
BP-198 1324 ROCK HILL ROAD 63124 7/10/2021 16:07 7/10/2021 16:50 0:42:30 N/A
BP-348 24 OVERBROOK LANE 63124 7/1/2021 7:20 7/1/2021 8:30 1:10:00 N/A
BP-348 24 OVERBROOK LANE 63124 7/10/2021 1:40 7/10/2021 2:57 1:17:30 N/A
BP-348 24 OVERBROOK LANE 63124 7/10/2021 15:55 7/10/2021 16:12 0:17:30 N/A
BP-348 24 OVERBROOK LANE 63124 7/10/2021 16:37 7/10/2021 16:57 0:20:00 N/A
BP-349 25 OVERBROOK LANE 63124 7/1/2021 6:55 7/1/2021 9:42 2:47:30 N/A
BP-349 25 OVERBROOK LANE 63124 7/10/2021 1:40 7/10/2021 3:57 2:17:30 N/A
(07/01/2021 - 12/31/2021)
Table A-1: Constructed SSO Activation Data
2021_12 Semi A1-2 sso activation Page 1 of 3
Metropolitan St. Louis Sewer District
Semi-Annual Report
Bypass
Number Address Zip Code Event Start Date Event End Date
Event Duration
(day hh:mm:ss)
Estimated
Volume
(gallons)
(07/01/2021 - 12/31/2021)
Table A-1: Constructed SSO Activation Data
BP-349 25 OVERBROOK LANE 63124 7/10/2021 15:47 7/10/2021 17:47 2:00:00 N/A
BP-349 25 OVERBROOK LANE 63124 8/8/2021 17:27 8/8/2021 17:45 0:17:30 N/A
BP-349 25 OVERBROOK LANE 63124 8/8/2021 18:05 8/8/2021 18:07 0:02:30 N/A
BP-370 7501 CAPILIA DRIVE 63123 8/8/2021 16:42 8/8/2021 16:50 0:07:30N/A
BP-370 7501 CAPILIA DRIVE 63123 8/23/2021 16:50 8/23/2021 16:57 0:07:30 N/A
BP-370 7501 CAPILIA DRIVE 63123 8/30/2021 15:10 8/30/2021 15:35 0:25:00 N/A
BP-370 7501 CAPILIA DRIVE 63123 8/31/2021 22:57 8/31/2021 23:17 0:20:00 N/A
BP-416 9431 BONHOMME WOODS 63132 7/1/2021 7:35 7/1/2021 7:37 0:02:30 N/A
BP-416 9431 BONHOMME WOODS 63132 7/9/2021 21:55 7/9/2021 23:12 1:17:30 N/A
BP-416 9431 BONHOMME WOODS 63132 7/10/2021 1:00 7/10/2021 3:35 2:35:00 N/A
BP-416 9431 BONHOMME WOODS 63132 7/10/2021 14:42 7/10/2021 16:57 2:15:00 N/A
BP-416 9431 BONHOMME WOODS 63132 8/8/2021 16:42 8/8/2021 17:25 0:42:30 N/A
BP-416 9431 BONHOMME WOODS 63132 8/12/2021 19:07 8/12/2021 20:17 1:10:00 N/A
BP-416 9431 BONHOMME WOODS 63132 8/26/2021 15:47 8/26/2021 17:35 1:47:30 N/A
BP-416 9431 BONHOMME WOODS 63132 8/31/2021 22:35 9/1/2021 0:02 1:27:30 N/A
BP-416 9431 BONHOMME WOODS 63132 9/4/2021 4:52 9/4/2021 6:00 1:07:30 N/A
BP-416 9431 BONHOMME WOODS 63132 9/21/2021 4:05 9/21/2021 5:10 1:05:00 N/A
BP-417 9445 BONHOMME WOODS 63132 7/9/2021 22:02 7/9/2021 23:07 1:05:00 14,527
BP-417 9445 BONHOMME WOODS 63132 7/10/2021 1:02 7/10/2021 3:17 2:15:00 27,878
BP-417 9445 BONHOMME WOODS 63132 7/10/2021 14:40 7/10/2021 16:37 1:57:30 21,984
BP-417 9445 BONHOMME WOODS 63132 7/25/2021 7:37 7/25/2021 9:10 1:32:30 20,481
BP-417 9445 BONHOMME WOODS 63132 8/8/2021 16:45 8/8/2021 17:12 0:27:30 3,363
BP-417 9445 BONHOMME WOODS 63132 8/12/2021 19:10 8/12/2021 20:10 1:00:00 15,610
BP-417 9445 BONHOMME WOODS 63132 8/26/2021 15:55 8/26/2021 17:22 1:27:30 34,332
BP-417 9445 BONHOMME WOODS 63132 8/31/2021 22:40 8/31/2021 23:55 1:15:00 19,519
BP-417 9445 BONHOMME WOODS 63132 9/4/2021 4:52 9/4/2021 5:50 0:57:30 10,884
BP-417 9445 BONHOMME WOODS 63132 9/21/2021 4:10 9/21/2021 5:00 0:50:00 N/A
BP-451 2312 ROCKDALE DRIVE 63121 7/10/2021 1:00 7/10/2021 1:10 0:10:00 N/A
BP-451 2312 ROCKDALE DRIVE 63121 7/10/2021 14:30 7/10/2021 15:47 1:17:30 N/A
BP-451 2312 ROCKDALE DRIVE 63121 9/21/2021 4:12 9/21/2021 4:20 0:07:30 N/A
BP-501 907 WARSON WOODS (B) 63122 7/10/2021 15:22 7/10/2021 16:30 1:07:30 N/A
BP-501 907 WARSON WOODS (B) 63122 8/8/2021 17:00 8/8/2021 17:07 0:07:30 N/A
BP-501 907 WARSON WOODS (B) 63122 8/30/2021 15:07 8/30/2021 15:40 0:32:30 N/A
BP-501 907 WARSON WOODS (B) 63122 8/31/2021 23:05 8/31/2021 23:27 0:22:30 N/A
BP-501 907 WARSON WOODS (B) 63122 9/21/2021 4:35 9/21/2021 5:17 0:42:30 N/A
BP-527 8240 LINDBERGH BLVD 63031 7/10/2021 1:02 7/10/2021 5:57 4:55:00 N/A
BP-527 8240 LINDBERGH BLVD 63031 7/10/2021 15:35 7/10/2021 18:17 2:42:30 N/A
BP-545 950 DES PERES DRIVE 63119 8/26/2021 18:22 8/26/2021 19:45 1:22:30 N/A
BP-557 685 EDGAR ROAD 63119 8/23/2021 15:50 8/23/2021 16:02 0:12:30 170,492
BP-557 685 EDGAR ROAD 63119 8/30/2021 15:10 8/30/2021 16:05 0:55:00 4,528,937
BP-557 685 EDGAR ROAD 63119 8/31/2021 23:05 8/31/2021 23:22 0:17:30 251,640
BP-587 475 WEST JACKSON 63119 8/23/2021 15:30 8/23/2021 15:45 0:15:00 1,710
BP-587 475 WEST JACKSON 63119 8/30/2021 14:55 8/30/2021 16:05 1:10:00 21,521
BP-587 475 WEST JACKSON 63119 8/31/2021 22:50 8/31/2021 23:07 0:17:30 3,397
BP-591 10201 LYLEWOOD DRIVE 63124 7/1/2021 6:50 7/1/2021 13:37 6:47:30 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 7/9/2021 22:45 7/10/2021 0:45 2:00:00 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 7/10/2021 1:12 7/10/2021 10:50 9:37:30 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 7/10/2021 15:30 7/10/2021 22:30 7:00:00 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 7/16/2021 4:50 7/16/2021 9:45 4:55:00 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 7/16/2021 15:10 7/16/2021 16:42 1:32:30 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 7/25/2021 8:20 7/25/2021 11:30 3:10:00 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 8/8/2021 17:12 8/8/2021 18:30 1:17:30 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 8/12/2021 19:35 8/12/2021 22:30 2:55:00 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 8/26/2021 16:47 8/26/2021 17:42 0:55:00 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 8/31/2021 23:25 9/1/2021 0:12 0:47:30 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 9/4/2021 5:20 9/4/2021 7:12 1:52:30N/A
BP-591 10201 LYLEWOOD DRIVE 63124 9/21/2021 4:27 9/21/2021 6:50 2:22:30 N/A
2021_12 Semi A1-2 sso activation Page 2 of 3
Metropolitan St. Louis Sewer District
Semi-Annual Report
Bypass
Number Address Zip Code Event Start Date Event End Date
Event Duration
(day hh:mm:ss)
Estimated
Volume
(gallons)
(07/01/2021 - 12/31/2021)
Table A-1: Constructed SSO Activation Data
BP-591 10201 LYLEWOOD DRIVE 63124 12/28/2021 11:12 12/28/2021 12:42 1:30:00 N/A
BP-591 10201 LYLEWOOD DRIVE 63124 12/28/2021 12:45 12/28/2021 13:57 1:12:30 N/A
BP-605 22 HILLVALE 63105 7/25/2021 7:30 7/25/2021 7:55 0:25:00 15,530
BP-605 22 HILLVALE 63105 7/25/2021 8:15 7/25/2021 8:20 0:05:00 800
BP-618 9058 ROSEMARY AVENUE 63123 7/1/2021 6:12 7/1/2021 7:55 1:42:30N/A
BP-618 9058 ROSEMARY AVENUE 63123 7/25/2021 8:50 7/25/2021 9:20 0:30:00 N/A
BP-618 9058 ROSEMARY AVENUE 63123 8/8/2021 16:42 8/8/2021 17:05 0:22:30 N/A
BP-618 9058 ROSEMARY AVENUE 63123 8/12/2021 19:15 8/12/2021 19:45 0:30:00 N/A
BP-618 9058 ROSEMARY AVENUE 63123 8/23/2021 15:45 8/23/2021 16:25 0:40:00 N/A
BP-618 9058 ROSEMARY AVENUE 63123 8/23/2021 16:50 8/23/2021 17:25 0:35:00 N/A
BP-618 9058 ROSEMARY AVENUE 63123 8/30/2021 15:17 8/30/2021 15:25 0:07:30 N/A
BP-618 9058 ROSEMARY AVENUE 63123 8/31/2021 22:52 8/31/2021 23:40 0:47:30 N/A
BP-618 9058 ROSEMARY AVENUE 63123 9/4/2021 6:42 9/4/2021 6:52 0:10:00N/A
BP-618 9058 ROSEMARY AVENUE 63123 9/21/2021 4:10 9/21/2021 4:45 0:35:00 N/A
BP-618 9058 ROSEMARY AVENUE 63123 10/11/2021 12:02 10/11/2021 12:05 0:02:30 N/A
BP-623 8024 WALINKA 63105 7/9/2021 21:42 7/9/2021 21:52 0:10:00 N/A
BP-623 8024 WALINKA 63105 7/10/2021 0:55 7/10/2021 1:00 0:05:00 N/A
BP-623 8024 WALINKA 63105 7/25/2021 7:30 7/25/2021 7:55 0:25:00 N/A
BP-623 8024 WALINKA 63105 8/31/2021 22:42 8/31/2021 22:45 0:02:30 N/A
BP-623 8024 WALINKA 63105 9/21/2021 4:07 9/21/2021 4:10 0:02:30 N/A
BP-634 7575 OXFORD 63105 7/25/2021 7:27 7/25/2021 8:30 1:02:30 N/A
BP-634 7575 OXFORD 63105 8/8/2021 16:40 8/8/2021 16:57 0:17:30 N/A
BP-634 7575 OXFORD 63105 8/31/2021 22:37 8/31/2021 22:57 0:20:00 N/A
BP-634 7575 OXFORD 63105 9/4/2021 5:05 9/4/2021 5:15 0:10:00 N/A
BP-634 7575 OXFORD 63105 9/21/2021 4:05 9/21/2021 4:22 0:17:30 N/A
BP-634 7575 OXFORD 63105 9/21/2021 4:30 9/21/2021 4:37 0:07:30 N/A
2021_12 Semi A1-2 sso activation Page 3 of 3
Metropolitan St. Louis Sewer District
Semi-Annual Report
Bypass
Number Address Zip Code Event Start Date Event End Date
Event Duration
(day hh:mm:ss)
Estimated
Volume
(gallons)
BP-210 1426 BAYONNE DRIVE 63138 10/12/2021 18:17 10/12/2021 19:40 1:22:30 N/A
BP-210 1426 BAYONNE DRIVE 63138 10/12/2021 19:45 10/12/2021 19:50 0:05:00 N/A
BP-210 1426 BAYONNE DRIVE 63138 10/12/2021 20:00 10/12/2021 20:02 0:02:30 N/A
Table A-2: Constructed SSO Activation Data - Excluded Events
(07/01/2021 - 12/31/2021)
2021_12 Semi A1-2 sso activation Page 1 of 1
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
APPENDIX B: BUILDING BACKUPS
BUILDING BACKUPS
Attached and Spreadsheet File Provided on Enclosed Disk
Metropolitan St. Louis Sewer District
Semi-Annual Report
Service
Request Call
Date
Occurred During
Current
Reporting Period
Street
Number Street Name Zip Code
Watershed/Treatment Plant
Service Area
Service Request Work Order
Cause
Discharge to
Water of the
US?
7/8/2015 1316 2ND 63104 BISSELL TREATMENT OVERCHARGED MAIN NO
6/30/2021 * 1316 2ND 63104 BISSELL TREATMENT PUMP STATION FAILURE NO
7/6/2021 X 5337 ALFRED 63116 LEMAY TREATMENT BLOCKED MAIN NO
10/5/2021 X 2240 ALLEN 63033 COLDWATER TREATMENT BLOCKED MAIN NO
10/5/2021 X 2245 ALLEN 63033 COLDWATER TREATMENT BLOCKED MAIN NO
12/13/2021 X 9812 ALLENDALE 63123 LEMAY TREATMENT BLOCKED MAIN NO
10/24/2021 X 3065 ARMONA 63129 MERAMEC TREATMENT BLOCKED MAIN NO
10/24/2021 X 3069 ARMONA 63129 MERAMEC TREATMENT BLOCKED MAIN NO
4/20/2017 1806 ATMORE 63136 BISSELL TREATMENT BLOCKED MAIN NO
6/7/2019 1806 ATMORE 63136 BISSELL TREATMENT BLOCKED MAIN NO
9/24/2021 X 1806 ATMORE 63136 BISSELL TREATMENT BLOCKED MAIN NO
8/31/2019 5 AUSTIN 63122 LEMAY TREATMENT OVERCHARGED MAIN NO
9/1/2021 X 5 AUSTIN 63122 LEMAY TREATMENT OVERCHARGED MAIN NO
7/30/2013 4400 BEGG 63121 BISSELL TREATMENT BLOCKED MAIN NO
7/22/2019 4400 BEGG 63121 BISSELL TREATMENT OVERCHARGED MAIN NO
8/30/2021 X 4400 BEGG 63121 BISSELL TREATMENT OVERCHARGED MAIN NO
7/5/2021 X 6012 BERMUDA 63135 BISSELL TREATMENT BLOCKED MAIN NO
6/20/2013 5307 BISCHOFF 63110 LEMAY TREATMENT OVERCHARGED MAIN NO
6/29/2015 5307 BISCHOFF 63110 LEMAY TREATMENT OVERCHARGED MAIN NO
8/13/2020 5307 BISCHOFF 63110 LEMAY TREATMENT OVERCHARGED MAIN NO
10/5/2021 X 5307 BISCHOFF 63110 LEMAY TREATMENT OVERCHARGED MAIN NO
8/30/2021 X 45 BLACKTHORN 63123 LEMAY TREATMENT OVERCHARGED MAIN NO
10/19/2021 X 4755 BRAWLEY 63128 MERAMEC TREATMENT BLOCKED MAIN NO
8/16/2016 8908 BRIDGEPORT 63144 LEMAY TREATMENT OVERCHARGED MAIN NO
9/9/2016 8908 BRIDGEPORT 63144 LEMAY TREATMENT OVERCHARGED MAIN NO
9/16/2016 8908 BRIDGEPORT 63144 LEMAY TREATMENT OVERCHARGED MAIN NO
1/16/2017 8908 BRIDGEPORT 63144 LEMAY TREATMENT BLOCKED MAIN NO
7/10/2021 X 8908 BRIDGEPORT 63144 LEMAY TREATMENT OVERCHARGED MAIN NO
7/25/2021 X 8908 BRIDGEPORT 63144 LEMAY TREATMENT OVERCHARGED MAIN NO
11/5/2021 X 10124 CABOT 63137 BISSELL TREATMENT BLOCKED MAIN NO
8/12/2019 10128 CABOT 63137 BISSELL TREATMENT OVERCHARGED MAIN NO
11/5/2021 X 10128 CABOT 63137 BISSELL TREATMENT BLOCKED MAIN NO
8/12/2019 10135 CABOT 63137 BISSELL TREATMENT OVERCHARGED MAIN NO
11/5/2021 X 10135 CABOT 63137 BISSELL TREATMENT BLOCKED MAIN NO
8/30/2021 X 2660 CHOUTEAU 63104 BISSELL TREATMENT OVERCHARGED MAIN NO
7/25/2021 X 5815 DEGIVERVILLE 63112 LEMAY TREATMENT OVERCHARGED MAIN NO
12/11/2021 X 3601 DIAMOND HEAD 63125 LEMAY TREATMENT BLOCKED MAIN NO
12/25/2021 X 13142 EAST 63128 MERAMEC TREATMENT BLOCKED MAIN NO
8/12/2020 1929 EDWARDS 63110 LEMAY TREATMENT OVERCHARGED MAIN NO
(07/01/2021 - 12/31/2021, Effective Date 04/27/2012)
Table B-1: Building Backup
2021_12 Semi B1 backup Page 1 of 5
Metropolitan St. Louis Sewer District
Semi-Annual Report
Service
Request Call
Date
Occurred During
Current
Reporting Period
Street
Number Street Name Zip Code
Watershed/Treatment Plant
Service Area
Service Request Work Order
Cause
Discharge to
Water of the
US?
(07/01/2021 - 12/31/2021, Effective Date 04/27/2012)
Table B-1: Building Backup
7/27/2021 X 1929 EDWARDS 63110 LEMAY TREATMENT OVERCHARGED MAIN NO
8/30/2021 X 11 EDWIN 63122 LEMAY TREATMENT OVERCHARGED MAIN NO
7/16/2021 X 622 EMERSON 63141 LEMAY TREATMENT BLOCKED MAIN NO
5/9/2021 * 205 ENCHANTED 63021 GRAND GLAIZE TREATMENT BLOCKED MAIN NO
8/12/2019 5822 ERA 63147 BISSELL TREATMENT OVERCHARGED MAIN NO
9/8/2021 X 5822 ERA 63147 BISSELL TREATMENT OVERCHARGED MAIN NO
4/18/2013 1401 FLORISSANT 63135 COLDWATER TREATMENT OVERCHARGED MAIN NO
12/26/2015 1401 FLORISSANT 63135 COLDWATER TREATMENT OVERCHARGED MAIN NO
8/15/2016 1401 FLORISSANT 63135 COLDWATER TREATMENT OVERCHARGED MAIN NO
3/18/2021 1401 FLORISSANT 63135 COLDWATER TREATMENT OVERCHARGED MAIN NO
7/10/2021 X 1401 FLORISSANT 63135 COLDWATER TREATMENT OVERCHARGED MAIN NO
8/9/2021 X 6800 FLORISSANT 63136 BISSELL TREATMENT BLOCKED MAIN NO
8/30/2021 X 3949 FOREST PARK 63108 BISSELL TREATMENT OVERCHARGED MAIN NO
9/14/2021 X 4118 FULLER 63044 MISSOURI RIVER TREATMENT BLOCKED MAIN NO
10/7/2021 X 4118 FULLER 63044 MISSOURI RIVER TREATMENT OVERCHARGED MAIN NO
5/23/2019 4824 GERMANIA 63116 LEMAY TREATMENT OVERCHARGED MAIN NO
6/26/2019 4824 GERMANIA 63116 LEMAY TREATMENT OVERCHARGED MAIN NO
8/30/2019 4824 GERMANIA 63116 LEMAY TREATMENT OVERCHARGED MAIN NO
8/8/2021 X 4824 GERMANIA 63116 LEMAY TREATMENT OVERCHARGED MAIN NO
8/30/2021 X 8531 GILMORE 63147 BISSELL TREATMENT OVERCHARGED MAIN NO
6/19/2015 330 GLENDALE 63119 LEMAY TREATMENT OVERCHARGED MAIN NO
8/30/2021 X 330 GLENDALE 63119 LEMAY TREATMENT OVERCHARGED MAIN NO
11/8/2021 X 413 GRAVOIS 63026 FENTON TREATMENT BLOCKED MAIN NO
9/2/2021 X 9223 HALLS FERRY 63136 BISSELL TREATMENT BLOCKED MAIN NO
8/15/2016 5724 HAMILTON 63136 BISSELL TREATMENT OVERCHARGED MAIN NO
8/30/2021 X 5724 HAMILTON 63136 BISSELL TREATMENT OVERCHARGED MAIN NO
8/30/2021 X 5725 HAMILTON 63136 BISSELL TREATMENT OVERCHARGED MAIN NO
9/20/2021 X 5642 HANCOCK 63139 LEMAY TREATMENT OVERCHARGED MAIN NO
10/24/2021 X 7420 HAZELCREST 63042 COLDWATER TREATMENT BLOCKED MAIN NO
9/15/2021 X 901 HAZEL FALLS 63021 GRAND GLAIZE TREATMENT BLOCKED MAIN NO
12/13/2021 X 2314 HENNEPIN 63114 MISSOURI RIVER TREATMENT BLOCKED MAIN NO
6/29/2021 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
8/9/2021 X 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
8/13/2021 X 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
8/31/2021 X 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
9/1/2021 X 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
9/7/2021 X 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
9/15/2021 X 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
9/21/2021 X 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
2021_12 Semi B1 backup Page 2 of 5
Metropolitan St. Louis Sewer District
Semi-Annual Report
Service
Request Call
Date
Occurred During
Current
Reporting Period
Street
Number Street Name Zip Code
Watershed/Treatment Plant
Service Area
Service Request Work Order
Cause
Discharge to
Water of the
US?
(07/01/2021 - 12/31/2021, Effective Date 04/27/2012)
Table B-1: Building Backup
10/4/2021 X 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
10/6/2021 X 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
10/11/2021 X 4919 HOLLY HILLS 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
8/19/2021 X 9625 HOLTWOOD 63114 COLDWATER TREATMENT BLOCKED MAIN NO
5/22/2019 7755 HOW 63130 LEMAY TREATMENT BLOCKED MAIN NO
12/24/2021 X 7755 HOW 63130 LEMAY TREATMENT BLOCKED MAIN NO
12/24/2021 X 7757 HOW 63130 LEMAY TREATMENT BLOCKED MAIN NO
8/12/2020 3892 HUMPHREY 63116 BISSELL TREATMENT OVERCHARGED MAIN NO
9/15/2021 X 3892 HUMPHREY 63116 BISSELL TREATMENT OVERCHARGED MAIN NO
2/19/2018 4800 HURSLEY 63128 MERAMEC TREATMENT BLOCKED MAIN NO
12/3/2021 X 4800 HURSLEY 63128 MERAMEC TREATMENT BLOCKED MAIN NO
11/13/2021 X 1148 INDIAN TRAILS 63132 LEMAY TREATMENT BLOCKED MAIN NO
7/20/2021 X 2833 INNSBRUCK 63129 MERAMEC TREATMENT BLOCKED MAIN NO
7/12/2021 X 2400 JEFFERSON 63104 BISSELL TREATMENT BLOCKED MAIN NO
8/10/2021 X 12182 JERRIES 63033 BISSELL TREATMENT BLOCKED MAIN NO
1/1/2015 2600 JONATHAN 63125 LEMAY TREATMENT BLOCKED MAIN NO
1/25/2021 2600 JONATHAN 63125 LEMAY TREATMENT BLOCKED MAIN NO
12/23/2021 X 2600 JONATHAN 63125 LEMAY TREATMENT BLOCKED MAIN NO
12/27/2021 X 157 JUBILEE HILL 63040 MISSOURI RIVER TREATMENT BLOCKED MAIN NO
6/30/2021 4166 JUNIATA 63116 BISSELL TREATMENT BLOCKED MAIN NO
7/1/2021 X 4166 JUNIATA 63116 BISSELL TREATMENT BLOCKED MAIN NO
7/1/2021 X 1809 KILREA 63136 BISSELL TREATMENT OVERCHARGED MAIN NO
8/30/2021 X 6 KINGSBURY 63112 LEMAY TREATMENT OVERCHARGED MAIN NO
9/3/2021 X 2217 KINGSFORD 63031 COLDWATER TREATMENT BLOCKED MAIN NO
9/3/2021 X 2218 KINGSFORD 63031 COLDWATER TREATMENT BLOCKED MAIN NO
8/8/2021 X 5425 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
8/8/2021 X 5427 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
8/10/2015 5859 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
12/26/2015 5859 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
7/14/2018 5859 KINGSHIGHWAY 63109 LEMAY TREATMENT BLOCKED MAIN NO
8/15/2020 5859 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
3/11/2021 5859 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
4/7/2021 5859 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
5/27/2021 5859 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
6/26/2021 5859 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
7/10/2021 X 5859 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
8/8/2021 X 5859 KINGSHIGHWAY 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
10/18/2021 X 1234 KNOLLHAVEN 63021 GRAND GLAIZE TREATMENT BLOCKED MAIN NO
9/24/2021 X 11933 LADUE 63141 LEMAY TREATMENT BLOCKED MAIN NO
2021_12 Semi B1 backup Page 3 of 5
Metropolitan St. Louis Sewer District
Semi-Annual Report
Service
Request Call
Date
Occurred During
Current
Reporting Period
Street
Number Street Name Zip Code
Watershed/Treatment Plant
Service Area
Service Request Work Order
Cause
Discharge to
Water of the
US?
(07/01/2021 - 12/31/2021, Effective Date 04/27/2012)
Table B-1: Building Backup
7/1/2021 X 4807 LANGTREE 63128 MERAMEC TREATMENT BLOCKED MAIN NO
9/9/2015 2705 LASALLE 63104 BISSELL TREATMENT OVERCHARGED MAIN NO
8/31/2021 X 2705 LASALLE 63104 BISSELL TREATMENT OVERCHARGED MAIN NO
8/31/2021 X 2721 LASALLE 63104 BISSELL TREATMENT OVERCHARGED MAIN NO
9/1/2021 X 2734 LASALLE 63104 BISSELL TREATMENT OVERCHARGED MAIN NO
5/13/2021 1035 LLEWELLYN 63132 LEMAY TREATMENT BLOCKED MAIN NO
7/9/2021 X 1035 LLEWELLYN 63132 LEMAY TREATMENT BLOCKED MAIN NO
3/18/2021 10544 LOCUST 63114 LEMAY TREATMENT OVERCHARGED MAIN NO
7/10/2021 X 10544 LOCUST 63114 LEMAY TREATMENT OVERCHARGED MAIN NO
8/30/2021 X 2745 LOCUST 63103 BISSELL TREATMENT BLOCKED MAIN NO
10/26/2020 9033 LOGANBERRY 63121 BISSELL TREATMENT BLOCKED MAIN NO
11/27/2021 X 9033 LOGANBERRY 63121 BISSELL TREATMENT BLOCKED MAIN NO
11/27/2021 X 9101 LOGANBERRY 63121 BISSELL TREATMENT BLOCKED MAIN NO
7/27/2021 X 3320 LUCAS AND HUNT 63121 BISSELL TREATMENT BLOCKED MAIN NO
12/2/2021 X 9708 MADISON 63119 LEMAY TREATMENT BLOCKED MAIN NO
8/30/2021 X 1543 MCCAUSLAND 63117 LEMAY TREATMENT OVERCHARGED MAIN NO
8/15/2016 1256 MEAD 63137 BISSELL TREATMENT OVERCHARGED MAIN NO
3/18/2021 1256 MEAD 63137 BISSELL TREATMENT OVERCHARGED MAIN NO
7/16/2021 X 1256 MEAD 63137 BISSELL TREATMENT OVERCHARGED MAIN NO
1/25/2021 2860 MEADOWLARK 63136 BISSELL TREATMENT BLOCKED MAIN NO
8/30/2021 X 2860 MEADOWLARK 63136 BISSELL TREATMENT OVERCHARGED MAIN NO
8/9/2021 X 3807 MELBA 63121 BISSELL TREATMENT BLOCKED MAIN NO
8/8/2021 X 3808 MELBA 63121 BISSELL TREATMENT BLOCKED MAIN NO
8/30/2021 X 5839 MIMIKA 63147 BISSELL TREATMENT OVERCHARGED MAIN NO
10/29/2021 X 3534 MINNESOTA 63118 BISSELL TREATMENT BLOCKED MAIN NO
9/2/2021 X 1024 MONTROSE 63104 BISSELL TREATMENT OVERCHARGED MAIN NO
11/15/2021 X 1311 MOORLANDS 63117 LEMAY TREATMENT BLOCKED MAIN NO
12/5/2021 X 4 MORENA 63011 MISSOURI RIVER TREATMENT BLOCKED MAIN NO
4/16/2020 1550 NEW FLORISSANT 63031 COLDWATER TREATMENT BLOCKED MAIN NO
2/24/2021 1550 NEW FLORISSANT 63031 COLDWATER TREATMENT BLOCKED MAIN NO
7/6/2021 X 1550 NEW FLORISSANT 63031 COLDWATER TREATMENT BLOCKED MAIN NO
9/30/2021 X 10644 OAK GATE 63131 LEMAY TREATMENT BLOCKED MAIN NO
6/23/2015 720 OAKLAND 63122 LEMAY TREATMENT OVERCHARGED MAIN NO
8/31/2021 X 720 OAKLAND 63122 LEMAY TREATMENT OVERCHARGED MAIN NO
7/20/2021 X 12821 OGE 63131 GRAND GLAIZE TREATMENT BLOCKED MAIN NO
12/10/2021 X 5612 OLEATHA 63139 LEMAY TREATMENT OVERCHARGED MAIN NO
7/15/2021 X 733 PADDOCK 63126 LEMAY TREATMENT BLOCKED MAIN NO
7/30/2021 X 2320 PINE 63103 BISSELL TREATMENT OVERCHARGED MAIN NO
11/14/2018 8430 PLAZAROCK 63114 BISSELL TREATMENT BLOCKED MAIN NO
2021_12 Semi B1 backup Page 4 of 5
Metropolitan St. Louis Sewer District
Semi-Annual Report
Service
Request Call
Date
Occurred During
Current
Reporting Period
Street
Number Street Name Zip Code
Watershed/Treatment Plant
Service Area
Service Request Work Order
Cause
Discharge to
Water of the
US?
(07/01/2021 - 12/31/2021, Effective Date 04/27/2012)
Table B-1: Building Backup
9/17/2021 X 8430 PLAZAROCK 63114 BISSELL TREATMENT BLOCKED MAIN NO
10/26/2021 X 9031 ROCK FOREST 63123 LEMAY TREATMENT BLOCKED MAIN NO
8/8/2021 X 5015 ROSA 63109 LEMAY TREATMENT OVERCHARGED MAIN NO
8/30/2021 X 6351 SALOMA 63136 BISSELL TREATMENT OVERCHARGED MAIN NO
7/6/2021 X 6594 SCANLAN 63139 LEMAY TREATMENT OVERCHARGED MAIN NO
10/27/2021 X 701 SHEPLEY 63137 BISSELL TREATMENT BLOCKED MAIN NO
11/27/2021 X 4109 SHIRLEY 63121 BISSELL TREATMENT BLOCKED MAIN NO
3/18/2021 7218 ST ANDREWS 63121 LEMAY TREATMENT OVERCHARGED MAIN NO
7/10/2021 X 7218 ST ANDREWS 63121 LEMAY TREATMENT OVERCHARGED MAIN NO
7/6/2021 X 610 STARLET 63031 COLDWATER TREATMENT BLOCKED MAIN NO
10/30/2021 X 11215 ST CHARLES ROCK 63044 COLDWATER TREATMENT BLOCKED MAIN NO
12/28/2021 X 4031 ST FERDINAND 63113 BISSELL TREATMENT BLOCKED MAIN NO
7/25/2021 X 2622 SUBLETTE 63139 LEMAY TREATMENT OVERCHARGED MAIN NO
7/1/2021 X 3548 SULPHUR 63139 LEMAY TREATMENT BLOCKED MAIN NO
9/22/2021 X 4306 SULPHUR 63109 LEMAY TREATMENT BLOCKED MAIN NO
9/21/2021 X 5739 SUTHERLAND 63109 LEMAY TREATMENT BLOCKED MAIN NO
8/2/2021 X 5734 TERRY 63120 BISSELL TREATMENT BLOCKED MAIN NO
5/24/2019 4706 TESSON 63116 LEMAY TREATMENT PUMP STATION FAILURE NO
6/26/2021 4706 TESSON 63116 LEMAY TREATMENT OVERCHARGED MAIN NO
7/13/2021 X 4706 TESSON 63116 LEMAY TREATMENT OVERCHARGED MAIN NO
7/12/2021 X 4711 TESSON 63116 LEMAY TREATMENT OVERCHARGED MAIN NO
1/27/2015 10936 TESSON FERRY 63123 LEMAY TREATMENT BLOCKED MAIN NO
9/1/2021 X 10936 TESSON FERRY 63123 LEMAY TREATMENT OVERCHARGED MAIN NO
11/28/2021 X 4301 TREADWAY 63134 COLDWATER TREATMENT BLOCKED MAIN NO
10/11/2021 X 1615 TROTTER 63033 COLDWATER TREATMENT BLOCKED MAIN NO
9/14/2021 X 11783 UNITY 63044 MISSOURI RIVER TREATMENT BLOCKED MAIN NO
10/7/2021 X 11783 UNITY 63044 MISSOURI RIVER TREATMENT OVERCHARGED MAIN NO
7/14/2021 X 880 VICTORY 63125 LEMAY TREATMENT OVERCHARGED MAIN NO
7/11/2021 X 884 VICTORY 63125 LEMAY TREATMENT OVERCHARGED MAIN NO
7/21/2021 X 890 VICTORY 63125 LEMAY TREATMENT OVERCHARGED MAIN NO
6/20/2015 3033 WALTON 63115 BISSELL TREATMENT BLOCKED MAIN NO
9/8/2018 3033 WALTON 63115 BISSELL TREATMENT SEWER SEPARATION FAILURE NO
3/12/2021 * 3033 WALTON 63115 BISSELL TREATMENT BLOCKED MAIN NO
8/30/2021 X 1321 WASHINGTON 63103 BISSELL TREATMENT OVERCHARGED MAIN NO
8/4/2021 X 1440 WILLOWBROOK 63033 COLDWATER TREATMENT BLOCKED MAIN NO
130TOTAL BUILDING BACKUPS DURING THE REPORTING PERIOD
2021_12 Semi B1 backup Page 5 of 5
Metropolitan St. Louis Sewer District
Semi-Annual Report – July 1 to December 31, 2021
APPENDIX C: SANITARY SEWER OVERFLOWS
SANITARY SEWER OVERFLOWS
Attached and Spreadsheet File Provided on Enclosed Disk
Metropolitan St. Louis Sewer District
Semi-Annual Report
Table C-1: Sanitary Sewer Overflows
(07/01/2021 - 12/31/2021, Effective Date 04/27/2012)
Work Order
Start Date
Watershed/
Treatment Plant
Service Area Service Address
Location
Description Facility Type
Estimated
Volume
(gallons) Reason / Cause
Time To
Commence
Investigation (day
hh:mm)
Time To Correct
and/or Cleanup
(day hh:mm)
07/01/21 LEMAY TREATMENT
4 BOXWOOD LN,
63122 GIS-1485023 MANHOLE 2,000
RAIN EVENT
EXCEEDED
CAPACITY
00:00 03:00
07/07/21 BISSELL TREATMENT
298 WASHINGTON
AVE, 63102 GIS-1550409 MANHOLE 100,000
WIDESPREAD
FLOODING 00:00 6 DAY 20:50
07/10/21 MISSOURI RIVER
TREATMENT
3855 TAUSSIG AVE,
63044 E12089 PUMP STATION 490,000 EQUIPMENT FAILURE 00:00 00:58
07/19/21 MISSOURI RIVER
TREATMENT
911 JOHN PELLET
CT, 63017 E73451 PUMP STATION 300,000 BROKEN PIPE 00:20 35 DAY 02:30
07/20/21 MERAMEC
TREATMENT
2833 INNSBRUCK DR,
63129 GIS-2485455 GRAVITY MAIN 720
BLOCKED WITH
GREASE 01:58 15:16
07/21/21 MISSOURI RIVER
TREATMENT
16607 OLD
CHESTERFIELD RD,
63017
GIS-10379496 MANHOLE 68,000 BROKEN PIPE 00:25 9 DAY 02:09
07/21/21 MISSOURI RIVER
TREATMENT
16885 CRYSTAL
SPRINGS DR, 63005 GIS-1544348 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
16885 CRYSTAL
SPRINGS DR, 63005 GIS-1544347 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
16885 CRYSTAL
SPRINGS DR, 63005 GIS-1544346 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
16885 CRYSTAL
SPRINGS DR, 63005 GIS-1544129 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
1226 BLUFFVIEW
RIDGE DR, 63005 GIS-1481442 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
1207 SOMERSET
FIELD DR, 63005 GIS-1552359 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
1203 SOMERSET
FIELD DR, 63005 GIS-1481441 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
1203 SOMERSET
FIELD DR, 63005 GIS-1552370 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
1203 SOMERSET
FIELD DR, 63005 GIS-1552360 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
16885 CRYSTAL
SPRINGS DR, 63005 GIS-1544128 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
16885 CRYSTAL
SPRINGS DR, 63005 GIS-1544127 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
2021_12 Semi C1 known sso Page 1 of 4
Metropolitan St. Louis Sewer District
Semi-Annual Report
Table C-1: Sanitary Sewer Overflows
(07/01/2021 - 12/31/2021, Effective Date 04/27/2012)
Work Order
Start Date
Watershed/
Treatment Plant
Service Area Service Address
Location
Description Facility Type
Estimated
Volume
(gallons) Reason / Cause
Time To
Commence
Investigation (day
hh:mm)
Time To Correct
and/or Cleanup
(day hh:mm)
07/21/21 MISSOURI RIVER
TREATMENT
16885 CRYSTAL
SPRINGS DR, 63005 GIS-1544126 MANHOLE 250,000 BROKEN PIPE 00:25 9 DAY 01:47
07/21/21 MISSOURI RIVER
TREATMENT
700 W
CHESTERFIELD
PKWY, 63017
GIS-1641116 MANHOLE 68,000 BROKEN PIPE 00:25 10 DAY 02:10
07/22/21 BISSELL TREATMENT
8848 ALVA AVE,
63121 GIS-2522909 GRAVITY MAIN 25
BLOCKED WITH
DEBRIS 00:34 01:30
08/02/21 MISSOURI RIVER
TREATMENT
16607 OLD
CHESTERFIELD RD,
63017
E40359 PUMP STATION 57,000 BROKEN PIPE 00:00 2 DAY 23:20
08/05/21 MISSOURI RIVER
TREATMENT
11302 LACKLAND RD,
63146 GIS-2371364 GRAVITY MAIN 15,000 BROKEN PIPE 00:00 4 DAY 00:34
08/06/21 MISSOURI RIVER
TREATMENT
2060 MCKELVEY RD,
63043 GIS-1518668 MANHOLE 500
BLOCKED WITH
DEBRIS 03:25 03:30
08/14/21 LEMAY TREATMENT
301 CLARK AVE,
63119 GIS-2526124 GRAVITY MAIN 60
BLOCKED WITH
DEBRIS 01:38 00:41
08/15/21 FENTON TREATMENT
165 MERAMEC OAK
RDG, 63026 GIS-1484667 MANHOLE 50
BLOCKED WITH
ROOTS 00:30 01:15
08/18/21 MISSOURI RIVER
TREATMENT
3199 PARKWOOD LN,
63043 GIS-1514613 MANHOLE 50
BLOCKED WITH
GREASE 01:00 02:00
08/28/21 BISSELL TREATMENT
3528 MARSHALL AVE,
63114 GIS-1525064 MANHOLE 1,000 EQUIPMENT FAILURE 00:00 02:45
09/02/21 BISSELL TREATMENT
2991 HILLEMAN AVE,
63114 GIS-2365112 GRAVITY MAIN 80
BLOCKED WITH
DEBRIS 02:42 03:07
09/04/21 GRAND GLAIZE
TREATMENT
1610 KRISTE CT,
63131 GIS-2428311 GRAVITY MAIN 80
BLOCKED WITH
DEBRIS 02:17 01:00
09/13/21 GRAND GLAIZE
TREATMENT
13350 CENTEROYAL
DR, 63131 GIS-9103832 GRAVITY MAIN 380
VANDALISM
DUMPING 01:24 03:36
09/30/21 LEMAY TREATMENT
339 N CENTRAL AVE,
63105 GIS-1548515 MANHOLE 80
BLOCKED WITH
DEBRIS 02:28 00:26
10/02/21 BISSELL TREATMENT
11490 RIVERVIEW
DR, 63138 GIS-7837048 OUTFALL 560,000 EQUIPMENT FAILURE 00:40 02:40
10/03/21 GRAND GLAIZE
TREATMENT
907 ALPINE RIDGE
DR, 63021 GIS-1597908 MANHOLE 100
BLOCKED WITH
DEBRIS 00:00 02:57
10/04/21 LEMAY TREATMENT
2608 PARK HILL CIR,
63125 GIS-1606984 MANHOLE 70 BLOCKED WITH GRIT 02:15 01:00
2021_12 Semi C1 known sso Page 2 of 4
Metropolitan St. Louis Sewer District
Semi-Annual Report
Table C-1: Sanitary Sewer Overflows
(07/01/2021 - 12/31/2021, Effective Date 04/27/2012)
Work Order
Start Date
Watershed/
Treatment Plant
Service Area Service Address
Location
Description Facility Type
Estimated
Volume
(gallons) Reason / Cause
Time To
Commence
Investigation (day
hh:mm)
Time To Correct
and/or Cleanup
(day hh:mm)
10/10/21 COLDWATER
TREATMENT
2501 BROWN RD,
63114 GIS-2511181 GRAVITY MAIN 50 BROKEN PIPE 00:33 01:45
10/27/21 BISSELL TREATMENT
707 SHEPLEY DR,
63137 GIS-1505414 MANHOLE 100
BLOCKED WITH
GREASE 01:27 1 DAY 04:46
10/28/21 COLDWATER
TREATMENT
528 HOLIDAY AVE,
63042 GIS-1492364 MANHOLE 40
BLOCKED WITH
ROOTS 00:40 01:30
11/02/21 LEMAY TREATMENT
7201 EL MORO AVE,
63117 GIS-7842881 MANHOLE 60
BLOCKED WITH
DEBRIS 00:00 02:18
11/08/21 BISSELL TREATMENT
525 COUNTRY CLUB
DR, 63121 GIS-2364301 GRAVITY MAIN 200 BROKEN PIPE 00:00 3 DAY 21:58
11/08/21 LEMAY TREATMENT
11720 TARRYTOWN
DR, 63141 GIS-1634527 MANHOLE 500
BLOCKED WITH
DEBRIS 00:00 21:38
11/09/21 BISSELL TREATMENT
7736 SPRINGDALE
DR, 63121 GIS-2510718 GRAVITY MAIN 50
BLOCKED WITH
GREASE 00:00 00:27
11/14/21 MISSOURI RIVER
TREATMENT
31 CHESTERTON LN,
63017 GIS-1486925 MANHOLE 400
BLOCKED WITH
ROOTS 01:15 05:26
11/19/21 MERAMEC
TREATMENT
6224 HEIMOS
INDUSTRIAL PARK
DR, 63129
GIS-1608719 MANHOLE 90
BLOCKED WITH
GREASE 00:25 05:15
11/26/21 MERAMEC
TREATMENT
12615 OLD TESSON
RD, 63128 GIS-1612558 MANHOLE 250
BLOCKED WITH
GREASE 00:53 03:15
11/26/21 GRAND GLAIZE
TREATMENT
1227 POLO LAKE DR,
63021 GIS-1586944 MANHOLE 100
BLOCKED WITH
DEBRIS 01:29 03:00
11/28/21 GRAND GLAIZE
TREATMENT
507 CLAYMONT
PLACE DR, 63011 GIS-1573034 MANHOLE 100
BLOCKED WITH
ROOTS 00:24 04:00
12/02/21 BISSELL TREATMENT
813 DEANDELL CT,
63135 GIS-2352514 GRAVITY MAIN 630 BROKEN PIPE 03:46 4 DAY 15:30
12/03/21 MERAMEC
TREATMENT
4800 HURSLEY DR,
63128 GIS-2479307 GRAVITY MAIN 100
BLOCKED WITH
ROOTS 00:55 04:00
12/14/21 MERAMEC
TREATMENT
10308 CONCORD
SCHOOL RD, 63128 GIS-1602210 MANHOLE 100
BLOCKED WITH
DEBRIS 00:00 02:59
12/15/21 COLDWATER
TREATMENT
10313 NIBLIC DR,
63114 GIS-1523387 MANHOLE 60
BLOCKED WITH
ROOTS 01:40 00:25
12/15/21 MERAMEC
TREATMENT
10300 CONCORD
SCHOOL RD, 63128 GIS-1602210 MANHOLE 50
BLOCKED WITH
DEBRIS 00:21 02:59
12/20/21 MISSOURI RIVER
TREATMENT
2645 WESTGLEN
FARMS DR, 63011 GIS-1586186 MANHOLE 300
BLOCKED WITH
GREASE 01:17 00:39
2021_12 Semi C1 known sso Page 3 of 4
Metropolitan St. Louis Sewer District
Semi-Annual Report
Table C-1: Sanitary Sewer Overflows
(07/01/2021 - 12/31/2021, Effective Date 04/27/2012)
Work Order
Start Date
Watershed/
Treatment Plant
Service Area Service Address
Location
Description Facility Type
Estimated
Volume
(gallons) Reason / Cause
Time To
Commence
Investigation (day
hh:mm)
Time To Correct
and/or Cleanup
(day hh:mm)
12/20/21 MISSOURI RIVER
TREATMENT
16607 OLD
CHESTERFIELD RD,
63017
E12507 PUMP STATION 5,000 EQUIPMENT FAILURE 00:00 02:00
12/21/21 LEMAY TREATMENT 761 KENT RD, 63124 GIS-2531383 GRAVITY MAIN 1,600 BROKEN PIPE 00:00 2 DAY 02:51
12/23/21 GRAND GLAIZE
TREATMENT
501 AUTUMN BLUFF
DR, 63021 GIS-2460335 GRAVITY MAIN 360
BLOCKED WITH
DEBRIS 01:28 02:30
12/27/21 COLDWATER
TREATMENT
6545 ALDER AVE,
63134 GIS-1498107 MANHOLE 300
BLOCKED WITH
DEBRIS 01:22 02:50
12/30/21 FENTON TREATMENT
10839 WOODFOREST
DR, 63128 GIS-1603969 MANHOLE 50
BLOCKED WITH
DEBRIS 01:31 15:29
2021_12 Semi C1 known sso Page 4 of 4