The URL can be used to link to this page

Home My Public Portal AboutSemi Annual Report, July 1 to December 31, 2017 Metropolitan St. Louis Sewer District SEMI-ANNUAL REPORT Reporting Period – July 1, 2017 to December 31, 2017 Consent Decree Due Date – February 15, 2018 Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 TABLE OF CONTENTS 1.0 INTRODUCTION ......................................................................................... 1 2.0 CONSTRUCTED SSO ACTIVATION DATA .............................................. 2 3.0 BUILDING BACKUP DATA ....................................................................... 7 4.0 SANITARY SEWER OVERFLOW DATA ................................................... 9 5.0 CONCLUSION .......................................................................................... 12 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, 2017 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, 2018 and provides reporting data for the six-month period of July 1, 2017 to December 31, 2017. 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, 2017 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. Between December 25, 2017 and December 31, 2017, a total of 178 invalid activations were recorded at Constructed SSO Outfalls BP-017, BP-291, BP-471, BP-527, BP-578, BP-621, and BP-623. These invalid activations were due to equipment malfunctions caused by an extended period of below freezing temperatures resulting in erroneous proximity sensor voltage readings and pressure sensor level readings. As a result of the equipment malfunctions, an invalid activation was recorded for BP-291 which began in December of 2017 and did not cease until January of 2018. This specific end-of-year invalid activation is being included with the report covering July 1 to December 31, 2017 and will not be included in the next reporting period. During December of 2017, two data loggers at Constructed SSO Outfalls stopped recording data due to equipment malfunctions. BP-473 did not collect level data or proximity sensor data between December 24, 2017 and January 10, 2018. Between December 13, 2017 and December 25, 2017, BP-545 recorded intermittent level data but recorded consistent proximity sensor data indicating the rubber duck bill valve remained closed. Between December 25, 2017 and January 9, 2018, BP-545 stopped collecting both level data and proximity sensor data. The data loggers for BP-473 and BP-545 were repaired in January of 2018. Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 3 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. 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. 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 Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 4 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, 2017, MSD has installed thirty-nine (39) 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. 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 removed flow meters from the following locations during this reporting period, July 1 through December 31, 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-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. Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 5 MSD previously removed flow meters from these following 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-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.  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-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-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.  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-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. Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 6  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-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-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.  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, 2017 7 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. 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: 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. Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 8 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. Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 9 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, 2017 10 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 were several sanitary sewer failure events that resulted in the release of wastewater at multiple locations. Although each of the events 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, 2017 to December 31, 2017, a total of thirty-seven (37) events caused overflows at forty-two (42) locations. The details of these single events that overflowed at more than one location are described as follows:  On August 16, 2017, a gravity sewer in the Missouri River Treatment Plant service area overflowed because of a power failure at a pump station. The down station resulted in sewage being released from two (2) locations (GIS-6997968 and GIS-6997969). Two (2) entries in Table C-1 are related to this one (1) event. Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 11  On October 4, 2017, a broken gravity sewer main in the Bissell Point Treatment Plant service area resulted in sewage being released from two (2) locations (GIS- 1490533 and GIS-2359939). Two (2) entries in Table C-1 are related to this one (1) event.  In November 2017, a broken gravity sewer in the Missouri River Treatment Plant service area resulted in sewage being released from two (2) locations. The initial discharge occurred on November 2, 2017 from the first location (GIS-2378778) due to the break in the gravity main. Then on November 5, 2017, the second discharge from a second location (GIS-1537159) occurred due to a pump failure. Two (2) entries in Table C-1 are related to this one (1) event.  On December 7 2017, a gravity sewer in the Lemay Treatment Plant service area was blocked with debris. The blockage resulted in sewage being released from three (3) locations (GIS-1486770, GIS-1628601, and GIS-1629107). Three (3) entries in Table C-1 are related to this one (1) event. Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 12 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, 2017 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-003 36 BRIARCLIFF DRIVE 63124 8/16/2017 17:10 8/16/2017 17:25 0:15:00 3,539 BP-013 842 LOUWEN DRIVE 63124 8/16/2017 17:02 8/16/2017 18:20 1:17:30 UNKNOWN BP-013 842 LOUWEN DRIVE 63124 10/10/2017 1:10 10/10/2017 1:15 0:05:00 UNKNOWN BP-015 614 OAKBROOK 63132 8/16/2017 17:00 8/16/2017 17:02 0:02:30 UNKNOWN BP-024 2338 GOODALE 63114 7/23/2017 3:15 7/23/2017 3:30 0:15:00 UNKNOWN BP-024 2338 GOODALE 63114 8/16/2017 15:50 8/16/2017 16:00 0:10:00 UNKNOWN BP-024 2338 GOODALE 63114 8/16/2017 16:55 8/16/2017 18:02 1:07:30 UNKNOWNBP-024 2338 GOODALE 63114 10/10/2017 0:17 10/10/2017 0:25 0:07:30 UNKNOWNBP-024 2338 GOODALE 63114 10/10/2017 0:50 10/10/2017 1:20 0:30:00 UNKNOWNBP-024 2338 GOODALE 63114 10/10/2017 16:10 10/10/2017 16:32 0:22:30 UNKNOWN BP-024 2338 GOODALE 63114 11/5/2017 14:30 11/5/2017 14:42 0:12:30 UNKNOWN BP-036 1593 NARROWS 63017 8/16/2017 17:15 8/16/2017 17:55 0:40:00 UNKNOWN BP-151 425 WENNEKER 63124 8/16/2017 17:42 8/16/2017 17:57 0:15:00 UNKNOWN BP-155 23 WARSON TERRACE 63124 8/16/2017 17:07 8/16/2017 18:42 1:35:00 UNKNOWN BP-158 1182 GLENWAY DRIVE 63122 8/16/2017 17:37 8/16/2017 18:05 0:27:30 20,328 BP-170 10042 CONWAY ROAD 63124 8/16/2017 17:07 8/16/2017 18:02 0:55:00 UNKNOWN BP-170 10042 CONWAY ROAD 63124 8/16/2017 18:17 8/16/2017 18:50 0:32:30 UNKNOWN BP-170 10042 CONWAY ROAD 63124 10/10/2017 1:27 10/10/2017 1:50 0:22:30 UNKNOWN BP-198 1324 ROCK HILL ROAD 63124 8/16/2017 17:22 8/16/2017 18:07 0:45:00 UNKNOWN BP-198 1324 ROCK HILL ROAD 63124 8/16/2017 18:22 8/16/2017 19:12 0:50:00 UNKNOWN BP-198 1324 ROCK HILL ROAD 63124 8/16/2017 19:17 8/16/2017 20:37 1:20:00 UNKNOWN BP-333 12 COUNTRYSIDE LANE 63131 8/16/2017 17:02 8/16/2017 18:35 1:32:30 UNKNOWN BP-343 11115 HERMITAGE HILL LANE 63131 8/16/2017 16:57 8/16/2017 18:02 1:05:00 UNKNOWN BP-349 25 OVERBROOK LANE 63124 8/16/2017 17:20 8/16/2017 21:12 3:52:30 UNKNOWN BP-370 7501 CAPILIA DRIVE 63123 8/16/2017 17:40 8/16/2017 17:50 0:10:00 UNKNOWN BP-370 7501 CAPILIA DRIVE 63123 8/17/2017 1:15 8/17/2017 1:35 0:20:00 UNKNOWN BP-416 9431 BONHOMME WOODS 63132 8/16/2017 16:57 8/16/2017 18:52 1:55:00 UNKNOWN BP-416 9431 BONHOMME WOODS 63132 10/10/2017 1:07 10/10/2017 1:27 0:20:00 UNKNOWN BP-416 9431 BONHOMME WOODS 63132 10/10/2017 16:30 10/10/2017 16:40 0:10:00 UNKNOWN BP-417 9445 BONHOMME WOODS 63132 8/16/2017 17:00 8/16/2017 18:37 1:37:30 43,791 BP-419 8345 BUCHANAN 63114 8/16/2017 17:00 8/16/2017 17:37 0:37:30 UNKNOWN BP-421 8507 CRIXDALE AVENUE 63132 8/16/2017 17:12 8/16/2017 17:55 0:42:30 UNKNOWNBP-515 9443 KIRCHNER 63125 10/10/2017 1:00 10/10/2017 1:15 0:15:00 2,774BP-533 8914 SHAWNEE 63114 8/16/2017 16:57 8/16/2017 17:05 0:07:30 UNKNOWNBP-545 1100 DES PERES DRIVE 63119 8/16/2017 17:27 8/16/2017 17:57 0:30:00 UNKNOWN BP-545 1100 DES PERES DRIVE 63119 8/16/2017 20:02 8/16/2017 20:07 0:05:00 UNKNOWN BP-555 11230 HERMITAGE HILL 63131 8/16/2017 17:10 8/16/2017 17:55 0:45:00 UNKNOWN BP-587 475 WEST JACKSON 63119 8/16/2017 17:35 8/16/2017 17:52 0:17:30 UNKNOWN BP-591 10201 LYLEWOOD DRIVE 63124 7/17/2017 0:05 7/17/2017 0:30 0:25:00 8,170 BP-591 10201 LYLEWOOD DRIVE 63124 8/16/2017 17:15 8/16/2017 21:40 4:25:00 203,008 BP-591 10201 LYLEWOOD DRIVE 63124 10/10/2017 1:42 10/10/2017 2:17 0:35:00 14,917 BP-597 4429 ROLLING DRIVE 63134 8/16/2017 17:20 8/16/2017 18:20 1:00:00 UNKNOWN BP-599 8711 PARDEE LANE 63126 8/16/2017 17:52 8/16/2017 18:52 1:00:00 UNKNOWN BP-605 22 HILLVALE 63105 8/16/2017 16:50 8/16/2017 16:52 0:02:30 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 7/13/2017 16:40 7/13/2017 17:20 0:40:00 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 7/13/2017 17:22 7/13/2017 18:22 1:00:00 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 7/13/2017 18:25 7/13/2017 18:27 0:02:30 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 8/14/2017 5:57 8/14/2017 6:07 0:10:00 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 8/14/2017 6:20 8/14/2017 6:27 0:07:30 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 8/16/2017 16:47 8/16/2017 17:17 0:30:00 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 8/16/2017 18:00 8/16/2017 18:02 0:02:30 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 8/17/2017 1:00 8/17/2017 1:05 0:05:00 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 8/17/2017 1:17 8/17/2017 2:55 1:37:30 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 9/18/2017 20:42 9/18/2017 20:50 0:07:30 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 10/10/2017 0:02 10/10/2017 0:15 0:12:30 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 10/10/2017 0:45 10/10/2017 1:32 0:47:30 UNKNOWN BP-618 9058 ROSEMARY AVENUE 63123 12/4/2017 20:52 12/4/2017 21:00 0:07:30 UNKNOWN (07/01/2017 - 12/31/2017) Table A-1: Constructed SSO Activation Data 2017_12 Semi A1-2 sso activation Page 1 of 2 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) (07/01/2017 - 12/31/2017) Table A-1: Constructed SSO Activation Data BP-619 700 VALLEY DRIVE 63137 7/23/2017 3:30 7/23/2017 3:45 0:15:00 UNKNOWN BP-619 700 VALLEY DRIVE 63137 8/16/2017 17:50 8/16/2017 17:55 0:05:00 UNKNOWN BP-619 700 VALLEY DRIVE 63137 10/10/2017 1:12 10/10/2017 1:45 0:32:30 UNKNOWN BP-623 8024 WALINKA 63105 7/16/2017 22:32 7/16/2017 22:42 0:10:00 UNKNOWN BP-623 8024 WALINKA 63105 8/16/2017 15:37 8/16/2017 15:45 0:07:30 UNKNOWN BP-623 8024 WALINKA 63105 8/16/2017 16:47 8/16/2017 16:57 0:10:00 UNKNOWN BP-623 8024 WALINKA 63105 8/16/2017 17:35 8/16/2017 17:45 0:10:00 UNKNOWNBP-623 8024 WALINKA 63105 9/18/2017 20:20 9/18/2017 20:25 0:05:00 UNKNOWNBP-623 8024 WALINKA 63105 10/10/2017 0:52 10/10/2017 0:57 0:05:00 UNKNOWNBP-634 7575 OXFORD 63105 7/16/2017 22:35 7/16/2017 22:52 0:17:30 UNKNOWN BP-634 7575 OXFORD 63105 8/16/2017 15:40 8/16/2017 15:52 0:12:30 UNKNOWN BP-634 7575 OXFORD 63105 8/16/2017 16:47 8/16/2017 17:12 0:25:00 UNKNOWN BP-634 7575 OXFORD 63105 8/16/2017 17:22 8/16/2017 18:00 0:37:30 UNKNOWN BP-634 7575 OXFORD 63105 9/18/2017 20:22 9/18/2017 20:32 0:10:00 UNKNOWN 2017_12 Semi A1-2 sso activation Page 2 of 2 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-017 126 POINTER LANE 63124 12/25/2017 6:52 12/25/2017 6:55 0:02:30 UNKNOWN BP-017 126 POINTER LANE 63124 12/25/2017 6:57 12/25/2017 7:00 0:02:30 UNKNOWN BP-017 126 POINTER LANE 63124 12/25/2017 7:07 12/25/2017 7:10 0:02:30 UNKNOWN BP-017 126 POINTER LANE 63124 12/25/2017 7:12 12/25/2017 7:15 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/27/2017 7:07 12/27/2017 10:25 3:17:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/27/2017 10:30 12/27/2017 10:32 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/27/2017 14:07 12/28/2017 21:30 1 day 07:22:30 UNKNOWNBP-291 75 FLORIDALE COURT 63135 12/28/2017 21:37 12/28/2017 21:40 0:02:30 UNKNOWNBP-291 75 FLORIDALE COURT 63135 12/28/2017 22:37 12/28/2017 22:47 0:10:00 UNKNOWNBP-291 75 FLORIDALE COURT 63135 12/29/2017 3:22 12/29/2017 3:32 0:10:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/29/2017 3:40 12/29/2017 3:42 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/29/2017 4:02 12/29/2017 4:05 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/29/2017 4:50 12/29/2017 4:52 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/29/2017 5:42 12/29/2017 5:55 0:12:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/29/2017 6:02 12/29/2017 6:05 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/29/2017 6:25 12/29/2017 6:27 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 4:22 12/30/2017 4:32 0:10:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 5:22 12/30/2017 5:27 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 6:12 12/30/2017 6:22 0:10:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 8:40 12/30/2017 8:47 0:07:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 12:35 12/30/2017 12:45 0:10:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 15:57 12/30/2017 16:07 0:10:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 16:15 12/30/2017 16:17 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 16:37 12/30/2017 16:40 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 17:00 12/30/2017 17:02 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 17:22 12/30/2017 17:25 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 17:57 12/30/2017 18:10 0:12:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 18:15 12/30/2017 18:20 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 18:37 12/30/2017 18:42 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 19:02 12/30/2017 19:05 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 19:25 12/30/2017 19:30 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 19:47 12/30/2017 20:02 0:15:00 UNKNOWNBP-291 75 FLORIDALE COURT 63135 12/30/2017 20:07 12/30/2017 20:12 0:05:00 UNKNOWNBP-291 75 FLORIDALE COURT 63135 12/30/2017 20:32 12/30/2017 20:37 0:05:00 UNKNOWNBP-291 75 FLORIDALE COURT 63135 12/30/2017 20:55 12/30/2017 21:00 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 21:17 12/30/2017 21:32 0:15:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 21:37 12/30/2017 21:45 0:07:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 21:47 12/30/2017 21:52 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 22:00 12/30/2017 22:05 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 22:22 12/30/2017 22:27 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 22:55 12/30/2017 23:12 0:17:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 23:17 12/30/2017 23:25 0:07:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 23:27 12/30/2017 23:32 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/30/2017 23:40 12/30/2017 23:55 0:15:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 0:00 12/31/2017 0:15 0:15:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 0:22 12/31/2017 0:35 0:12:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 0:42 12/31/2017 0:57 0:15:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 1:05 12/31/2017 1:10 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 1:12 12/31/2017 1:17 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 1:25 12/31/2017 1:37 0:12:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 1:45 12/31/2017 1:52 0:07:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 1:55 12/31/2017 2:00 0:05:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 2:05 12/31/2017 2:20 0:15:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 2:25 12/31/2017 2:32 0:07:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 5:10 12/31/2017 5:27 0:17:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 5:35 12/31/2017 5:42 0:07:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 5:45 12/31/2017 5:50 0:05:00 UNKNOWN Table A-2: Constructed SSO Activation Data - Excluded Events (07/01/2017 - 12/31/2017) 2017_12 Semi A1-2 sso activation Page 1 of 4 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) Table A-2: Constructed SSO Activation Data - Excluded Events (07/01/2017 - 12/31/2017) BP-291 75 FLORIDALE COURT 63135 12/31/2017 5:57 12/31/2017 6:10 0:12:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 6:17 12/31/2017 6:32 0:15:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 6:40 12/31/2017 6:55 0:15:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 7:02 12/31/2017 7:17 0:15:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 7:25 12/31/2017 7:40 0:15:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 7:45 12/31/2017 8:02 0:17:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 8:10 12/31/2017 8:25 0:15:00 UNKNOWNBP-291 75 FLORIDALE COURT 63135 12/31/2017 8:32 12/31/2017 8:47 0:15:00 UNKNOWNBP-291 75 FLORIDALE COURT 63135 12/31/2017 8:55 12/31/2017 9:10 0:15:00 UNKNOWNBP-291 75 FLORIDALE COURT 63135 12/31/2017 9:17 12/31/2017 9:32 0:15:00 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 9:40 12/31/2017 9:52 0:12:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 10:00 12/31/2017 10:07 0:07:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 10:25 12/31/2017 10:27 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 10:47 12/31/2017 10:50 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 11:10 12/31/2017 11:12 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 17:10 12/31/2017 17:12 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 17:32 12/31/2017 17:35 0:02:30 UNKNOWN BP-291 75 FLORIDALE COURT 63135 12/31/2017 21:40 1/3/2018 11:10 2 days 13:30:00 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/27/2017 10:02 12/27/2017 12:27 2:25:00 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/27/2017 20:05 12/27/2017 22:45 2:40:00 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/27/2017 22:47 12/27/2017 22:52 0:05:00 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/27/2017 22:55 12/28/2017 5:57 7:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/28/2017 6:15 12/28/2017 6:20 0:05:00 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/28/2017 13:07 12/28/2017 13:10 0:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/28/2017 13:40 12/28/2017 13:42 0:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/28/2017 13:45 12/28/2017 13:47 0:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/28/2017 13:50 12/28/2017 14:02 0:12:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/28/2017 14:05 12/29/2017 0:22 10:17:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/29/2017 0:25 12/29/2017 0:27 0:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/29/2017 0:30 12/29/2017 0:32 0:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/29/2017 0:35 12/29/2017 0:37 0:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/29/2017 0:40 12/29/2017 0:42 0:02:30 UNKNOWNBP-471 1 WINDRUSH WEST 63141 12/29/2017 0:45 12/29/2017 0:47 0:02:30 UNKNOWNBP-471 1 WINDRUSH WEST 63141 12/29/2017 0:50 12/29/2017 0:52 0:02:30 UNKNOWNBP-471 1 WINDRUSH WEST 63141 12/29/2017 2:25 12/29/2017 2:27 0:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/29/2017 3:15 12/29/2017 3:17 0:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/29/2017 11:05 12/29/2017 11:07 0:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/29/2017 11:30 12/29/2017 11:32 0:02:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/29/2017 11:35 12/29/2017 15:22 3:47:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/29/2017 15:27 12/29/2017 15:32 0:05:00 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/29/2017 15:42 12/30/2017 6:55 15:12:30 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/30/2017 6:57 12/30/2017 7:02 0:05:00 UNKNOWN BP-471 1 WINDRUSH WEST 63141 12/30/2017 7:07 12/30/2017 18:17 11:10:00 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/27/2017 7:32 12/27/2017 9:35 2:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/28/2017 1:32 12/28/2017 9:27 7:55:00 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/28/2017 9:30 12/28/2017 9:32 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/29/2017 5:25 12/29/2017 8:00 2:35:00 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 1:12 12/31/2017 6:17 5:05:00 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 6:20 12/31/2017 6:35 0:15:00 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 6:37 12/31/2017 6:42 0:05:00 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 6:45 12/31/2017 6:47 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 6:50 12/31/2017 6:52 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 6:57 12/31/2017 7:00 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 7:02 12/31/2017 7:05 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 7:10 12/31/2017 7:12 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 7:15 12/31/2017 7:17 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 7:20 12/31/2017 7:22 0:02:30 UNKNOWN 2017_12 Semi A1-2 sso activation Page 2 of 4 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) Table A-2: Constructed SSO Activation Data - Excluded Events (07/01/2017 - 12/31/2017) BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 7:27 12/31/2017 7:30 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 7:32 12/31/2017 7:35 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 7:40 12/31/2017 7:42 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 7:45 12/31/2017 7:47 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 7:50 12/31/2017 7:55 0:05:00 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 7:57 12/31/2017 8:00 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 8:02 12/31/2017 8:05 0:02:30 UNKNOWNBP-527 8240 LINDBERGH BLVD 63031 12/31/2017 8:10 12/31/2017 8:12 0:02:30 UNKNOWNBP-527 8240 LINDBERGH BLVD 63031 12/31/2017 8:15 12/31/2017 8:17 0:02:30 UNKNOWNBP-527 8240 LINDBERGH BLVD 63031 12/31/2017 8:20 12/31/2017 8:22 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 8:27 12/31/2017 8:30 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 8:32 12/31/2017 8:35 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 8:37 12/31/2017 8:42 0:05:00 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 8:45 12/31/2017 11:25 2:40:00 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 19:30 12/31/2017 20:47 1:17:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 20:52 12/31/2017 20:55 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 20:57 12/31/2017 21:00 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 21:05 12/31/2017 21:07 0:02:30 UNKNOWN BP-527 8240 LINDBERGH BLVD 63031 12/31/2017 21:10 12/31/2017 21:12 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/25/2017 1:17 12/25/2017 2:37 1:20:00 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/25/2017 2:40 12/25/2017 2:42 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/25/2017 2:45 12/25/2017 2:47 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/25/2017 9:40 12/25/2017 10:37 0:57:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/26/2017 8:12 12/26/2017 16:32 8:20:00 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/26/2017 16:35 12/26/2017 16:37 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/26/2017 16:40 12/26/2017 16:42 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/27/2017 10:50 12/27/2017 11:17 0:27:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/27/2017 18:17 12/27/2017 19:12 0:55:00 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/27/2017 19:50 12/27/2017 19:52 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 13:50 12/28/2017 13:52 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 14:10 12/28/2017 14:12 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 14:15 12/28/2017 14:17 0:02:30 UNKNOWNBP-578 353 ATALANTA AVENUE 63119 12/28/2017 14:20 12/28/2017 14:22 0:02:30 UNKNOWNBP-578 353 ATALANTA AVENUE 63119 12/28/2017 14:25 12/28/2017 14:27 0:02:30 UNKNOWNBP-578 353 ATALANTA AVENUE 63119 12/28/2017 14:30 12/28/2017 14:32 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 14:35 12/28/2017 14:37 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 14:40 12/28/2017 14:42 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 14:45 12/28/2017 14:47 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 14:50 12/28/2017 16:17 1:27:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 16:20 12/28/2017 16:22 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 16:25 12/28/2017 16:27 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 16:30 12/28/2017 16:32 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 16:35 12/28/2017 16:37 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 16:40 12/28/2017 16:42 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 20:50 12/28/2017 20:52 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 21:20 12/28/2017 21:22 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/28/2017 21:50 12/28/2017 21:52 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/29/2017 9:50 12/29/2017 9:52 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/29/2017 10:10 12/29/2017 10:12 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/29/2017 10:15 12/29/2017 13:37 3:22:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/29/2017 18:05 12/30/2017 3:10 9:05:00 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/30/2017 3:12 12/30/2017 3:42 0:30:00 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/30/2017 3:45 12/30/2017 3:47 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/30/2017 3:50 12/30/2017 3:52 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/30/2017 3:55 12/30/2017 3:57 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/30/2017 4:00 12/30/2017 4:02 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/30/2017 4:05 12/30/2017 4:07 0:02:30 UNKNOWN 2017_12 Semi A1-2 sso activation Page 3 of 4 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) Table A-2: Constructed SSO Activation Data - Excluded Events (07/01/2017 - 12/31/2017) BP-578 353 ATALANTA AVENUE 63119 12/30/2017 4:10 12/30/2017 4:12 0:02:30 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/30/2017 10:25 12/30/2017 11:20 0:55:00 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/30/2017 15:07 12/30/2017 16:22 1:15:00 UNKNOWN BP-578 353 ATALANTA AVENUE 63119 12/31/2017 11:20 12/31/2017 12:00 0:40:00 UNKNOWN BP-621 1479 ENGLEHOLM 63133 12/27/2017 19:57 12/27/2017 20:00 0:02:30 UNKNOWN BP-623 8024 WALINKA 63105 12/30/2017 3:35 12/30/2017 3:40 0:05:00 UNKNOWN BP-623 8024 WALINKA 63105 12/30/2017 13:15 12/30/2017 13:17 0:02:30 UNKNOWN 2017_12 Semi A1-2 sso activation Page 4 of 4 Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 APPENDIX B: BUILDING BACKUPS BUILDING BACKUPS Attached and Spreadsheet File Provided on Enclosed Disk 2017_12 Semi B1 backup Page 1 of 3 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? 12/15/2017 X 2231 ASHTON 63136 BISSELL TREATMENT BLOCKED MAIN NO12/28/2015 4803 AUTUMN 63123 LEMAY TREATMENT OVERCHARGED MAIN NO 3/30/2016 4803 AUTUMN 63123 LEMAY TREATMENT OVERCHARGED MAIN NO 7/11/2016 4803 AUTUMN 63123 LEMAY TREATMENT OVERCHARGED MAIN NO8/3/2016 4803 AUTUMN 63123 LEMAY TREATMENT OVERCHARGED MAIN NO 8/15/2016 4803 AUTUMN 63123 LEMAY TREATMENT OVERCHARGED MAIN NO 4/29/2017 4803 AUTUMN 63123 LEMAY TREATMENT OVERCHARGED MAIN NO 7/13/2017 X 4803 AUTUMN 63123 LEMAY TREATMENT OVERCHARGED MAIN NO11/10/2017 X 8796 BIG BEND 63119 LEMAY TREATMENT BLOCKED MAIN NO 8/25/2017 X 4923 BROAD OAK 63128 MERAMEC TREATMENT BLOCKED MAIN NO 11/10/2017 X 2172 BUTTERFIELD 63043 MISSOURI RIVER TREATMENT BLOCKED MAIN NO6/9/2012 1664 CAREY 63042 MISSOURI RIVER TREATMENT BLOCKED MAIN NO 6/12/2012 1664 CAREY 63042 MISSOURI RIVER TREATMENT BLOCKED MAIN NO 12/14/2012 1664 CAREY 63042 MISSOURI RIVER TREATMENT BLOCKED MAIN NO 11/5/2017 X 1664 CAREY 63042 MISSOURI RIVER TREATMENT BLOCKED MAIN NO11/4/2017 X 2332 CHAMBERS 63136 BISSELL TREATMENT BLOCKED MAIN NO 10/18/2017 X 8825 CHERRYWOOD 63136 BISSELL TREATMENT BLOCKED MAIN NO 8/17/2017 X 12131 CHERYL 63128 MERAMEC TREATMENT BLOCKED MAIN NO 8/17/2017 X 12139 CHERYL 63128 MERAMEC TREATMENT BLOCKED MAIN NO 5/1/2017 10060 CLAIRMONT 63136 BISSELL TREATMENT OVERCHARGED MAIN NO 8/11/2017 X 10060 CLAIRMONT 63136 BISSELL TREATMENT OVERCHARGED MAIN NO 9/12/2017 X 2215 COLLETT 63136 BISSELL TREATMENT BLOCKED MAIN NO9/12/2017 X 2220 COLLETT 63136 BISSELL TREATMENT BLOCKED MAIN NO 6/30/2016 10104 CROWN POINT 63136 BISSELL TREATMENT BLOCKED MAIN NO 11/28/2017 X 10104 CROWN POINT 63136 BISSELL TREATMENT BLOCKED MAIN NO 8/13/2017 X 64 FLESHER 63011 GRAND GLAIZE TREATMENT BLOCKED MAIN NO10/8/2017 X 1000 FLORA 63031 COLDWATER TREATMENT BLOCKED MAIN NO 7/5/2017 X 5 HARTNETT 63135 BISSELL TREATMENT BLOCKED MAIN NO 9/1/2017 X 6354 HOBART 63133 LEMAY TREATMENT BLOCKED MAIN NO3/14/2015 7013 LAUPHER 63042 COLDWATER TREATMENT BLOCKED MAIN NO 11/19/2017 X 7013 LAUPHER 63042 COLDWATER TREATMENT BLOCKED MAIN NO 3/14/2015 7017 LAUPHER 63042 COLDWATER TREATMENT BLOCKED MAIN NO 11/19/2017 X 7017 LAUPHER 63042 COLDWATER TREATMENT BLOCKED MAIN NO9/30/2017 X 9243 LEAMONT 63136 BISSELL TREATMENT BLOCKED MAIN NO 7/1/2017 X 14260 MANCHESTER 63011 GRAND GLAIZE TREATMENT BLOCKED MAIN NO 12/6/2017 X 6954 MARDEL 63109 LEMAY TREATMENT BLOCKED MAIN NO9/13/2017 X 3824 MELBA 63121 BISSELL TREATMENT BLOCKED MAIN NO 7/18/2017 X 1817 MILLSHIRE 63136 BISSELL TREATMENT BLOCKED MAIN NO 4/29/2014 5945 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO (07/01/2017 - 12/31/2017, Effective Date 04/27/2012) Table B-1: Building Backup 2017_12 Semi B1 backup Page 2 of 3 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? (07/01/2017 - 12/31/2017, Effective Date 04/27/2012) Table B-1: Building Backup 6/11/2014 5945 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO9/11/2014 5945 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 6/8/2015 5945 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 6/26/2015 5945 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO7/3/2015 5945 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 4/26/2016 5945 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 8/17/2017 X 5945 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 5/1/2012 5959 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO4/29/2014 5959 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 6/11/2014 5959 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 8/27/2014 5959 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO9/11/2014 5959 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 6/5/2015 5959 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 6/26/2015 5959 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 7/3/2015 5959 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO4/26/2016 5959 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 8/17/2017 X 5959 NATURAL BRIDGE 63120 BISSELL TREATMENT OVERCHARGED MAIN NO 8/24/2017 X 13770 NEW HALLS FERRY 63033 COLDWATER TREATMENT BLOCKED MAIN NO 11/16/2017 X 7501 PARKDALE 63105 LEMAY TREATMENT BLOCKED MAIN NO 4/5/2017 105 PEBBLEBROOK 63146 MISSOURI RIVER TREATMENT OVERCHARGED MAIN NO 4/30/2017 105 PEBBLEBROOK 63146 MISSOURI RIVER TREATMENT OVERCHARGED MAIN NO 8/16/2017 X 105 PEBBLEBROOK 63146 MISSOURI RIVER TREATMENT OVERCHARGED MAIN NO8/16/2017 X 7256 PERSHING 63130 LEMAY TREATMENT BLOCKED MANHOLE NO 11/10/2017 X 3087 POSTPORT 63043 MISSOURI RIVER TREATMENT BLOCKED MAIN NO 11/10/2017 X 3095 POSTPORT 63043 MISSOURI RIVER TREATMENT BLOCKED MAIN NO 8/17/2017 X 459 QUAN 63122 LEMAY TREATMENT BLOCKED MAIN NO12/27/2017 X 1765 ROSADO 63134 BISSELL TREATMENT BLOCKED MAIN NO 5/19/2014 8670 SPOON 63132 LEMAY TREATMENT BLOCKED MAIN NO 6/28/2015 8670 SPOON 63132 LEMAY TREATMENT OVERCHARGED MAIN NO8/12/2016 8670 SPOON 63132 LEMAY TREATMENT OVERCHARGED MAIN NO 8/16/2017 X 8670 SPOON 63132 LEMAY TREATMENT OVERCHARGED MAIN NO 8/16/2017 X 7111 STANFORD 63130 LEMAY TREATMENT OVERCHARGED MAIN NO 8/16/2017 X 7137 STANFORD 63130 LEMAY TREATMENT OVERCHARGED MAIN NO7/6/2017 X 2718 SUTTON 63143 LEMAY TREATMENT SEWER SEPARATION FAILURE NO 10/14/2017 X 9960 TAM O SHANTER 63114 COLDWATER TREATMENT BLOCKED MAIN NO 10/15/2017 X 950 TREE TRAILS 63026 FENTON TREATMENT BLOCKED MAIN NO9/5/2017 X 7154 VERNON 63130 LEMAY TREATMENT BLOCKED MAIN NO 11/10/2017 X 124 VLASIS 63011 GRAND GLAIZE TREATMENT BLOCKED MAIN NO 11/10/2017 X 126 VLASIS 63011 GRAND GLAIZE TREATMENT BLOCKED MAIN NO 2017_12 Semi B1 backup Page 3 of 3 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? (07/01/2017 - 12/31/2017, Effective Date 04/27/2012) Table B-1: Building Backup 8/16/2017 X 7103 WATERMAN 63130 LEMAY TREATMENT OVERCHARGED MAIN NO12/26/2017 X 259 WILLIAMS 63135 COLDWATER TREATMENT BLOCKED MAIN NO 3/9/2014 5569 WINDFORD 63129 MERAMEC TREATMENT BLOCKED MAIN NO 8/10/2017 X 5569 WINDFORD 63129 MERAMEC TREATMENT BLOCKED MAIN NO11/19/2017 X 7432 WISE 63117 LEMAY TREATMENT BLOCKED MAIN NO 7/22/2017 X 450 WOODLAWN GROVE 63122 LEMAY TREATMENT BLOCKED MAIN NO 7/18/2017 X 1532 YARMOUTH POINT 63017 MISSOURI RIVER TREATMENT BLOCKED MAIN NO 50TOTAL BUILDING BACKUPS DURING THE REPORTING PERIOD Metropolitan St. Louis Sewer District Semi-Annual Report – July 1 to December 31, 2017 APPENDIX C: SANITARY SEWER OVERFLOWS SANITARY SEWER OVERFLOWS Attached and Spreadsheet File Provided on Enclosed Disk 2017_12 Semi C1 known sso Page 1 of 3 Metropolitan St. Louis Sewer District Semi-Annual Report Table C-1: Sanitary Sewer Overflows (07/01/2017 - 12/31/2017) 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) 07/03/17 MERAMEC TREATMENT 5027 BARBAGALLO DR, 63129 GIS-1612918 MANHOLE 100 BLOCKED WITH ROOTS 01:00 03:4207/06/17 BISSELL TREATMENT 920 PIKE CT, 63138 GIS-1502185 MANHOLE 1800 BROKEN PIPE 05:50 22:30 07/07/17 MISSOURI RIVER TREATMENT 14332 WHITE BIRCH VALLEY LN, 63017 GIS-1541707 MANHOLE 100 BROKEN PIPE 00:00 02:30 07/12/17 MISSOURI RIVER TREATMENT 2367 SARTHE CT, 63043 GIS-2366208 GRAVITY MAIN 420 BLOCKED WITH DEBRIS 00:50 2 DAY 05:27 07/14/17 BISSELL TREATMENT 7818 CONTOUR DR, 63121 GIS-1041646 N/A 200 UNKNOWN CAUSE 00:00 1 DAY 04:49 07/23/17 GRAND GLAIZE TREATMENT 300 CLARKSON RD, 63011 GIS-1482978 MANHOLE 200 BLOCKED WITH DEBRIS 01:04 01:30 07/24/17 BISSELL TREATMENT 2318 CHAMBERS RD, 63136 GIS-1508507 MANHOLE 30 VANDALISM DUMPING 00:16 00:45 07/25/17 MISSOURI RIVER TREATMENT 14000 CAMBERRA CT, 63017 GIS-1543791 MANHOLE 620 BLOCKED WITH ROOTS 03:33 22:05 08/04/17 LEMAY TREATMENT 9925 CLAYTON RD, 63124 GIS-2405646 GRAVITY MAIN 8,100 BROKEN PIPE 03:28 4 DAY 22:00 08/10/17 MERAMEC TREATMENT 5982 SHORTLEAF CT, 63128 GIS-1485627 MANHOLE 100 BLOCKED WITH GREASE 00:00 07:16 08/11/17 LEMAY TREATMENT 7555 MACKENZIE RD, 63123 GIS-1584331 MANHOLE 200 BLOCKED WITH ROOTS 00:00 1 DAY 04:16 08/16/17 MISSOURI RIVER TREATMENT 3201 PARKWOOD LN, 63043 GIS-1514189 MANHOLE 50 BLOCKED WITH GREASE 00:00 05:48 08/17/17 MISSOURI RIVER TREATMENT 2156 CREVE COEUR MILL RD, 63146 GIS-6997968 MANHOLE 580,000 POWER OUTAGE (SANITARY STATION)00:00 1 DAY 21:25 08/17/17 MISSOURI RIVER TREATMENT 2156 CREVE COEUR MILL RD, 63146 GIS-6997969 MANHOLE 580,000 POWER OUTAGE (SANITARY STATION)00:00 1 DAY 21:25 08/25/17 MERAMEC TREATMENT 4923 BROAD OAK DR, 63128 GIS-2479583 GRAVITY MAIN 200 BLOCKED WITH ROOTS 00:00 05:33 08/28/17 LEMAY TREATMENT 9003 MIDDLEWOOD CT, 63127 GIS-1485168 MANHOLE 750 EQUIPMENT FAILURE 00:00 00:30 10/04/17 BISSELL TREATMENT 5298 N HANLEY RD, 63134 GIS-1490533 MANHOLE 700 BROKEN PIPE 00:00 4 DAY 04:57 10/04/17 BISSELL TREATMENT 5298 N HANLEY RD, 63134 GIS-2359939 GRAVITY MAIN 130 BROKEN PIPE 00:00 4 DAY 01:26 10/09/17 LEMAY TREATMENT 2801 TELEGRAPH RD, 63125 GIS-1611777 MANHOLE 40 BLOCKED WITH GREASE 01:00 01:00 2017_12 Semi C1 known sso Page 2 of 3 Metropolitan St. Louis Sewer District Semi-Annual Report Table C-1: Sanitary Sewer Overflows (07/01/2017 - 12/31/2017) 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) 10/11/17 MISSOURI RIVER TREATMENT 16738 KEHRSGROVE DR, 63005 GIS-1624276 MANHOLE 100 BLOCKED WITH DEBRIS 00:00 1 DAY 00:00 10/24/17 LEMAY TREATMENT 2221 S WARSON RD, 63124 GIS-2416644 GRAVITY MAIN 650 BROKEN PIPE 00:54 2 DAY 02:25 10/25/17 MISSOURI RIVER TREATMENT 12115 ST CHARLES ROCK RD, 63044 GIS-1641001 MANHOLE 280 BLOCKED WITH GREASE 01:23 3 DAY 02:21 10/27/17 GRAND GLAIZE TREATMENT 165 FOREST PKWY, 63088 GIS-1589117 MANHOLE 40 BLOCKED WITH ROOTS 00:56 00:15 11/02/17 MISSOURI RIVER TREATMENT 12962 SUMMIT RIDGE DR, 63146 GIS-2378778 GRAVITY MAIN 150 BROKEN PIPE 00:00 2 DAY 18:40 11/04/17 FENTON TREATMENT 1488 PREMIO DR, 63026 E10490 PUMP STATION 21,000 BROKEN PIPE 00:00 19:20 11/05/17 MISSOURI RIVER TREATMENT 12999 BANYAN TOWN DR, 63146 GIS-1537159 MANHOLE 200 EQUIPMENT FAILURE 00:00 17:20 11/06/17 MISSOURI RIVER TREATMENT 1656 CAREY CT, 63042 GIS-2535883 GRAVITY MAIN 720 BLOCKED WITH GRIT 00:00 4 DAY 08:00 11/13/17 MISSOURI RIVER TREATMENT 12131 DORSETT RD, 63043 GIS-2366594 GRAVITY MAIN 1,800 BLOCKED WITH GREASE 02:24 02:00 11/16/17 LEMAY TREATMENT 2156 CHATPORT RD, 63129 E40315 PUMP STATION 860 BROKEN PIPE 00:00 1 DAY 05:56 11/16/17 MISSOURI RIVER TREATMENT 827 MILLFIELD CT, 63017 GIS-1565757 MANHOLE 100 BLOCKED WITH ROOTS 00:37 15:39 11/18/17 COLDWATER TREATMENT 13789 LE SABRE DR, 63034 GIS-1500919 MANHOLE 30 BLOCKED WITH DEBRIS 00:50 00:30 11/21/17 LEMAY TREATMENT 95 SORREL LN, 63124 GIS-1564134 MANHOLE 300 BLOCKED WITH ROOTS 00:00 10:08 11/23/17 MISSOURI RIVER TREATMENT 130 BEAUJOLAIS DR, 63031 GIS-1491823 MANHOLE 200 BLOCKED WITH DEBRIS 00:00 2 DAY 02:32 11/27/17 LEMAY TREATMENT 6865 HEEGE RD, 63123 GIS-1583890 MANHOLE 1,100 BLOCKED WITH GREASE 00:05 5 DAY 23:54 11/30/17 LEMAY TREATMENT 4226 BAYLESS AVE, 63123 GIS-2468027 GRAVITY MAIN 1,000 BLOCKED WITH DEBRIS 01:38 1 DAY 02:51 11/30/17 LEMAY TREATMENT 505 S HANLEY RD, 63105 GIS-1538652 MANHOLE 20 BLOCKED WITH GREASE 00:19 04:15 12/01/17 MISSOURI RIVER TREATMENT 11885 LACKLAND RD, 63146 GIS-2371446 GRAVITY MAIN 12,000 BLOCKED WITH DEBRIS 00:00 10:28 12/04/17 COLDWATER TREATMENT 12455 BAY SHORE DR, 63033 GIS-2340047 GRAVITY MAIN 15 BROKEN PIPE 00:00 1 DAY 00:04 2017_12 Semi C1 known sso Page 3 of 3 Metropolitan St. Louis Sewer District Semi-Annual Report Table C-1: Sanitary Sewer Overflows (07/01/2017 - 12/31/2017) 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) 12/07/17 LEMAY TREATMENT 4 WARSON LN, 63124 GIS-1486770 MANHOLE 7,300 BLOCKED WITH DEBRIS 01:00 4 DAY 00:59 12/07/17 LEMAY TREATMENT 10033 CONWAY RD, 63124 GIS-1628601 MANHOLE 46,000 BLOCKED WITH DEBRIS 01:00 4 DAY 00:59 12/07/17 LEMAY TREATMENT 10030 CONWAY RD, 63124 GIS-1629107 MANHOLE 46,000 BLOCKED WITH DEBRIS 01:00 4 DAY 00:59 12/14/17 MERAMEC TREATMENT 12348 OLD TESSON RD, 63128 GIS-2479935 GRAVITY MAIN 65 BLOCKED WITH DEBRIS 03:18 02:30