V e r s ion 2. 2 Revised May 1, 2017
Sewer Overflow Response Plan
Revised by
Evansville Water and Sewer Utility
City-County Administration Building 1 Martin Luther King Blvd. Evansville, Indiana 47708
SORP 2.1 Prepared by
915 South Main Street Suite 406 Evansville, IN 47708
Submittal Authorization
Approved By: May 1, 2017 Date I certify under penalty of law that I have examined and am familiar with the information submitted in this document and all attachments and that this document and its attachments were prepared under my direction or supervision in a manner designed to ensure that qualified and knowledgeable personnel properly gather and present the information contained therein. I further certify, based on my inquiry of those individuals immediately responsible for obtaining the information, that I believe that the information is true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment.
May 1, 2017 III
Document Reviewers
Name Title
Jeff Merrick Chief Regulatory Compliance Officer
Harry Lawson Wastewater Superintendent
Carl Gist CSO Manager
Travis Hildebrandt Collection System Manager
Bob Conner Maintenance Supervisor
May 1, 2017 V
Revision History
Submittal Date Description
01-December-2010 SORP 1.0 Requirements Submittal
01-May-2011 SORP 2.0 Requirements Submittal
29-August-2011 SORP 2.1 Submittal amended with EPA Review Comments for SORP 2.0
01-May-2017 SORP 2.2 Submittal revised to reflect changes in the Utility’s work order management system in conjunction with SSO/ CSS reporting, as well as, changes in the overflow analysis investigation, SORP training and updated contact information to remain current.
May 1, 2017 VII
Contents
Submittal Authorization ...... iii Document Reviewers ...... v Revision History ...... vii Contents ...... ix Acronyms and Abbreviations ...... xi 1 Introduction and Requirements ...... 1-1 1.1 SORP Purpose and Goals ...... 1-1 1.1.1 Purpose ...... 1-1 1.1.2 Goals and Objectives ...... 1-1 1.2 Key Utility Contacts ...... 1-1 1.3 SORP Version ...... 1-1 1.4 Consent Decree SORP Requirements ...... 1-1 1.4.1 SORP 1.0 ...... 1-1 1.4.2 SORP 2.0 ...... 1-2 1.5 Applicable Definitions ...... 1-3 2 Response ...... 2-1 2.1 Receipt of Release Information ...... 2-1 2.1.1 Dispatch ...... 2-1 2.2 Response Resources ...... 2-2 2.2.1 Resource Mobilization ...... 2-3 2.3 Site Arrival and Assessment ...... 2-3 2.4 Estimate the Release Volume...... 2-4 2.5 Limit Flow to Impacted Area ...... 2-5 2.6 Correct, Contain, Recovery, and Cleanup ...... 2-6 2.6.1 Containment ...... 2-6 2.6.2 Additional Containment Measures ...... 2-6 2.6.3 Correcting the Overflow ...... 2-7 2.6.4 Recovery and Cleanup ...... 2-7 3 Overflow Analysis Investigation ...... 3-1 4 Reporting ...... 4-1 4.1 Overview ...... 4-1 4.2 Field Reporting ...... 4-1 4.2.1 Building / Property Backup Reporting ...... 4-2 4.2.2 Field Report Review and Data Entry ...... 4-3 4.3 Regulatory Reporting ...... 4-3 4.3.1 Initial Discharge Report ...... 4-3 4.3.2 Monthly Discharge Monitoring Report (DMR) ...... 4-4 5 Public Notification ...... 5-1 6 Training and Preparedness ...... 6-1 6.1 Training Records...... 6-2 6.2 SOP Training ...... 6-2
May 1, 2017 IX SEWER OVERFLOW RESPONSE PLAN VERSION 2.2 EVANSVILLE WATER AND SEWER UTILITY
Appendixes
A Key Utility Contacts B SORP Process Flow C Dispatch Response D SSO/CSS Release Reporting Standard Operating Procedure E Spill/SSO Volume Calculation Guidance F Traffic Control Standard Operating Procedure G Response, Recovery, and Cleanup Standard Operating Procedure H Manhole Inspection and Small Diameter C&I Standard Operating I Procedure Storm Drain Cleaning Standard Operating Procedure J Bypass/Overflow Incident Report Form 48373 K CSO Signage L Training and Organizational Participants
X May 1, 2017 Acronyms and Abbreviations
CMOM Capacity Management, Operations, and Maintenance CSO combined sewer overflow CSS combined sewer system GIS geographic information system IDEM Indiana Department of Environmental Management IT information technology NPDES National Pollutant Discharge Elimination System PPE personal protective equipment SOP standard operating procedure SORP Sewer Overflow Response Plan SSO sanitary sewer overflow SSS sanitary sewer system USEPA U.S. Environmental Protection Agency Utility Evansville Water and Sewer Utility WWTP wastewater treatment plant
May 1, 2017 XI
SECTION 1 Introduction and Requirements
1.1 SORP Purpose and Goals 1.1.1 Purpose This document presents the Evansville Water and Sewer Utility’s (Utility’s) Sewer Overflow Response Plan (SORP). The SORP is required by the Consent Decree and was developed to describe the Utility’s processes for identifying, responding to, mitigating, reporting, categorizing, and tracking sanitary sewer overflows (SSOs), combined sewer system (CSS) releases, and building/property backup events and the locations where they occur. 1.1.2 Goals and Objectives The SORP’s primary goal is for complete and accurate reporting of SSOs, CSS releases, and building/property backups that occur within the CSS and separate sanitary sewer (SSS) system. The SORP is focused on ensuring that the events are reported in a consistent manner, and in compliance with applicable state and federal law, the Utility’s National Pollutant Discharge Elimination System (NPDES) Permit, and with the Consent Decree SORP requirements found in Section 1.4 of this document. 1.2 Key Utility Contacts A list of key utility contacts can be found in Appendix A. 1.3 SORP Version The Consent Decree requires the Utility to prepare this SORP in two phases: SORP 1.0 and SORP 2.0. This document is SORP 2.1, amended with EPA review comments to SORP 2.0. The requirements for SORP 1.0 and SORP 2.0 are listed in Subsection 1.4. 1.4 Consent Decree SORP Requirements 1.4.1 SORP 1.0 SORP 1.0 requirements are described in Paragraphs 30 and 31 of the Consent Decree: 30. By no later than December 1, 2010, Defendants shall submit to Plaintiffs for review and approval pursuant to Section XV of this Consent Decree (Review and Approval Procedures) SORP 1.0, which shall include the requirements of (a) through (c), below: a. a consistent methodology for categorizing and documenting the causes of SSOs, CSS releases and Building/Property Back-ups for incorporation into the existing DataStream system; b. a description of Defendants’ procedures for responding to Building/Property Backups, including the timeframe for responses; the measures for cleanup of Building/Property Backups; and the measures taken (such as backflow preventer
May 1, 2017 1-1 SEWER OVERFLOW RESPONSE PLAN VERSION 2.2 EVANSVILLE WATER AND SEWER UTILITY
and/or grinding pump installation program) to correct or repair conditions in the Sewer Systems causing or contributing to Building/Property Backups; and c. a description of Defendants’ SSO and CSS Release reporting procedures and inclusion of forms and processes used for SSO and CSS Release data collection; 31. Upon U.S. EPA’s and IDEM’s approval of SORP 1.0 pursuant to Section XV of this Consent Decree (Review and Approval Procedures), Defendants shall fully implement approved procedures within thirty (30) Days and thereafter provide U.S. EPA, at the address specified in Section XIV of this Consent Decree (Notices and Submissions), with copies of each report sent to the State at the same time such report is provided to the State. 1.4.2 SORP 2.0 SORP 2.0 requirements are described in Paragraphs 32 and 33 of the Consent Decree. SORP 2.0 will be incorporated with the Utility’s Capacity Management, Operations, and Maintenance (CMOM) Plan 2.0 submittal due on May 1, 2011. 32. By no later than May 1, 2011, Defendants shall submit to Plaintiffs for review and approval pursuant to Section XV of this Consent Decree (Review and Approval Procedures) SORP 2.0, which shall include the requirements of (a) through (h), below: a. Defendants’ approach to providing prompt notice to the public (through the local news media or other means, including signs or barricades to restrict access) of an SSO or CSS Release where the public may come into contact with such Release, and a description of actions that Defendants will take to promptly provide such notice (during normal business hours and off-hours) b. For Building/Property Backups, how building and property owners can report backups, including a description of the methods for communicating with customers about how to report Building/Property Backups; c. A discussion of how Defendants will communicate information to building occupants and property owners on the risks associated with backups and how to safely and effectively clean up or to obtain clean up services; d. With the exception of Building/Property Backups, which are addressed in subparagraph (b), above, specific information on the standard operating procedures to be followed by Defendants personnel in responding to an SSO or CSS Release, including clean-up measures and measures to be taken to detect and correct the cause(s) of the SSOs and CSS Releases; e. Defendants’ plan to minimize the overflow by limiting upstream flow to the pipe segment (or structure) at which the event is occurring; f. Standard methods for estimating the volume of sewage released during an SSO or CSS Release event; g. Description of Defendants’ practices for training Sewer System staff on reporting procedures and documentation of customer complaints, with the result being that all SSOs and CSS Releases are reported to Plaintiffs in a timely fashion and as required by the Permits; and
1-2 May 1, 2017 SECTION 1—INTRODUCTION AND REQUIREMENTS
h. A plan to ensure the preparedness of Defendants employees, contractors, and personnel of other affected agencies necessary to implement the SORP, including but not limited to responsiveness training that identifies the various levels of training to be provided, the personnel who will receive each type of training, and the frequency at which the training will be provided. 33. SORP 2.0 shall include SORP 1.0 and shall be incorporated into the Defendants’ CMOM Program 2.0 submitted for review and approval pursuant to Section XV of this Consent Decree (Review and Approval Procedures). SORP 2.0 shall describe in detail Defendants’ SSO and CSS Release reporting, data tracking, cause determination, public notification, and training procedures. Further, SORP 2.0 shall ensure that Defendants’ practices, including but not limited to its training of Sewer System staff on reporting procedures and documentation of customer complaints, result in the reporting of all SSOs and CSS Releases to Plaintiffs in a timely fashion and as required by the NPDES Permits. Defendants shall identify in the SORP the procedures for timely and complete reporting to occur. 1.5 Applicable Definitions The following terms from the Consent Decree shall apply:
“Building/Property Backup” means a wastewater release and backup into a building or onto property that is caused by blockages, flow conditions, or other conditions in the Sewer Systems. A wastewater backup or release that is caused solely by conditions in a Private Service Connection Lateral is not a Building/Property Backup for purposes of the Consent Decree.
“Bypass” as that term is defined in 40 C.F.R. § 122.41(m) means the intentional diversion of waste streams from any portion of a wastewater treatment plant (WWTP).
“Combined Sewer Overflow” or “CSO” means any Discharge from any Outfall identified as a CSO Outfall in Defendants’ Current Permits. A list of Defendants’ CSO Outfalls is provided in Appendix A of the Consent Decree.
“Combined Sewer System” or “CSS” means the portions of Defendants’ Sewer Systems that are designed to convey municipal sewage (domestic, commercial, and industrial wastewaters) and storm water runoff through a single-pipe system to Defendants’ WWTPs or to CSO Outfalls. Defendants CSS includes both the CSS for the East WWTP (“East CSS”) and the CSS for the West WWTP (“West CSS”).
“Combined Sewer System Release” or “CSS Release” means a release of wastewater from the CSS at a point source not specifically identified in the Consent Decree Appendix A.
“Discharge” means any “discharge of a pollutant” as defined in 40 C.F.R. § 122.2 and 327 IAC 5-1.5-11.
“IDEM” means the Indiana Department of Environmental Management and any successor departments or agencies of the State of Indiana.
May 1, 2017 1-3 SEWER OVERFLOW RESPONSE PLAN VERSION 2.2 EVANSVILLE WATER AND SEWER UTILITY
“Private Service Connection Lateral” means a portion of each of the Sewer Systems, not owned by Defendants, used to convey wastewater from a building or buildings to that portion of the Sewer Systems owned by Defendants.
“Sanitary Sewer Overflow” or “SSO” means any Discharge to waters of the State or United States from Defendants’ Sanitary Sewer Systems through point sources not specified in any NPDES Permit, as well as, any release of wastewater from Defendants’ Sanitary Sewer Systems to public or private property that does not reach waters of the State or the United States, such as a release to a land surface or into a structure; provided, however, that such releases which are caused solely by conditions in a Private Service Connection Lateral are not SSOs for the purpose of the Consent Decree. As such, the term SSO includes Building/Property Backups caused in whole or in part by conditions in Defendants’ Sanitary Sewer System.
“Sanitary Sewer System” or “SSS” means all portions of Defendants’ Sewer Systems that are not a part of Defendants’ Combined Sewer Systems. Defendants’ SSS includes both the SSS for the East WWTP (“East SSS”) and the SSS for the West WWTP (“West SSS”).
“Sewer Systems” shall mean the wastewater collection and conveyance systems owned or operated by Defendants (including all pipes, Force Mains, Gravity Sewer Segments, Pump Stations, manholes, and appurtenances thereto) that are designed to collect and convey municipal sewage (domestic, commercial, or industrial) to the East WWTP or West WWTP or to a CSO Outfall. The term Sewer Systems includes both the CSS and SSS for the East WWTP and the CSS and SSS for the West WWTP. The term Sewer Systems does not include any Private Service Connection Lateral.
1-4 May 1, 2017
SECTION 2 Response
The Utility operates and responds to releases 24 hours per day, 7 days per week, and 365 days per year. This section identifies the Utility’s release response strategies, which include:
Receipt of release information Release response resources Site arrival and assessment Estimate the release volume Limit flow to the impacted area Correct, contain, recover, and clean up The Utility’s notification and response procedure flow is shown in Appendix B. 2.1 Receipt of Release Information Most notifications of SSO, CSS releases, and building/property backups are from the public. The Utility has a dispatcher available to take calls from the public 24 hours per day, 7 days per week, and 365 days per year. 2.1.1 Dispatch During day shift hours, from 7:00 a.m. to 3:30 p.m., calls are received by the Utility’s Collection System Data Coordinator or Customer Service Representative who notify the Collection System Maintenance Department to respond to the request.
Calls after day shift hours, including weekends and holidays, are received by the Night Desk (referred to as Dispatch).
Dispatch will follow the Utility’s Dispatch Response Standard Operating Procedure (SOP) (Appendix C) for sewer department customer complaints and will log the required information below on a Sewer Department Complaint Order form (See Appendix C) regarding all suspected spills or odor complaints. Information to be recorded includes:
Time and date call was received The on-call manager contacted Check either “Service Request for Sewer” or “Service Request for Odor” Caller’s name, address, and phone number Dispatcher’s name (who is taking the call) Dispatch will immediately contact on-call management after the call is received, and relay the contact information recorded on a Sewer Department Complaint Order form. A list of
May 1, 2017 2-1 SEWER OVERFLOW RESPONSE PLAN VERSION 2.2 EVANSVILLE WATER AND SEWER UTILITY
Key Utility Contacts is found in Appendix A. On-call management will contact the caller to determine the extent of the complaint and follow SORP procedures for all SSO/CSS releases and building/property backups. At the end of his or her shift, the Dispatcher will deliver all complaint order forms to the Collection System Data Coordinator. The responding sewer maintenance crew is responsible for SSO/CSS release and building property backup data entry into Cityworks. This provides the Sewer Department the control necessary to provide accurate and consistent data entry for delineating reportable overflows from non-reportable data. Each work order is reviewed, processed, and closed by the Collection System Maintenance Supervisor after completion of the sewer work. Work Orders are electronically stored in Cityworks and hard copies of the sewer department complaint orders are stored at the sewer department operations and maintenance facility. 2.2 Response Resources Utility staff, including management, coordinates and respond to the suspected spill event 24 hours per day, 7 days per week, and 365 days per year. During day shift operation, the Utility’s Collection System Manager or designee will coordinate the response. After normal business hours, the on-call supervisor will coordinate response. On-call management will respond to the suspected spill event 24 hours per day, 7 days per week, and 365 days per year and coverage rotation occurs every four weeks. The on-call coverage rotation consists of the following Utility personnel:
Collection Systems Manager Collection Systems Maintenance Supervisor Collection Systems Construction Supervisor Sewer Inspector (Engineering) For calls involving lift stations and WWTPs (for example, equipment or electrical outages), on-call management rotates every four weeks and includes the following Utility personnel:
Eastside WWTP manager Westside WWTP manager Wastewater superintendent Lift station manager
2-2 May 1, 2017 SECTION 2—RESPONSE
During wet-weather conditions, the WWTP manager will maintain plant operation to allow maximum flow through consistent with existing WWTP wet-weather operating plans. The primary objective is to maximize the amount of flow that the WWTP can receive and treat while maintaining the biological processes, thereby significantly reducing the frequency and volume of overflows in the CSS. 2.2.1 Resource Mobilization 2.2.1.1 Day Shift The Sewer Maintenance Department’s day shift (7:00 a.m. to 3:30 p.m.) consists of nine dedicated sewer maintenance crew members for immediate response mobilization. 2.2.1.2 Second Shift The Utility’s Sewer Maintenance Department maintains a second shift consisting of two crew members that serve as first responders Monday through Friday (9:30 a.m. to 8:00 p.m.). 2.2.1.3 Night Shift Night shift (3:30 p.m. to 7:00 a.m.) including weekends and holidays are staffed by Utility employees designated as on-call employees that include truck drivers, equipment operators, lead men, and laborers. The Sewer Maintenance Department has a Saturday shift from 7:00 a.m. to 5:30 p.m. consisting of crew members working overtime for normal sewer maintenance. The Saturday crew also provides immediate response to calls for sewer service. During the night shift, Dispatch will immediately contact on-call management regarding a suspected sewer overflow. The on-call manager will contact the caller/property owner immediately should the overflow backup or threaten to backup into private property. The on-call manager will instruct Dispatch to contact and mobilize the appropriate maintenance crew, equipment, and materials to respond. All crew members dispatched to an overflow must proceed immediately to the site. Any delays or conflicts in crew assignments by Dispatch will be reported immediately to the on-call manager for swift resolution. 2.2.1.4 Additional Resources Depending on the situation, additional resources such as construction, lift station, and plant crew, equipment, materials, and supplies will be mobilized as required. 2.3 Site Arrival and Assessment First responders to the site during the day shift or second shift normally will be the sewer maintenance crew depending on the severity of the call. Calls for a backup of a toilet, for instance, may be responded to by the sewer maintenance crew but not require management intervention since it was determined by the crew that the backup is not a result of a public owned sewer. In this case, the homeowner will be informed to call a licensed plumber. For all other instances (for example, manhole spills, property line cleanout spills, or basement drain backups) the day shift supervisor or manager or on-call supervisor or manager will be dispatched to the site and will:
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1. Determine the extent of the spill (for example, whether it is localized and non- threatening to public health or the environment). 2. Determine the origin of the spill and potential receiving area (for example, street curb, gutter, storm drain, and waters of the state or United States). 3. Observe and identify the impact from the spill (for example, solids, fish kill, or discoloration). 4. Identify any applicable receiving area (for example, waters of the state or United States). 5. Take photos of the impacted area if possible. 6. Contact the Utility’s Regulatory Compliance staff:
Carl Gist: 812-305-8068 Jeff Merrick: 812-204-5018 7. Determine the probable cause of the overflow (for example, roots, fat, oil, or grease, collapse, lift station mechanical or electrical failure, or capacity overload). 8. Determine if a backup to a building/private property is likely caused by public sewer or private lateral. 9. Use professional judgment to ensure appropriate response measures as described in this SORP document will be quickly implemented by the response crew. 10. Determine if additional resources, equipment, and materials are necessary and provide instructions to Dispatch, if required. 11. Document any necessary information following the SOP for SSO/CSS release reporting into CItyworks. 2.4 Estimate the Release Volume Estimating volume of overflows is a critical component of reporting; spill/SSO volume calculation guidance (Appendix E) to standardize tracking and reporting volume is available for the Utility’s use, depending on the situation. Utility staff uses their experience and best professional judgement in determining the volume based on several factors including but not limited to the:
size of the sewer weather conditions extent of the release In all cases, every effort will be made to make the best possible estimate of the release volume and record the volume on a SSO/CSS release or building/property backup work order.
2-4 May 1, 2017 SECTION 2—RESPONSE
2.5 Limit Flow to Impacted Area The first crew arriving at the site will work to limit the flow of the affected area and determine if the reported overflow can be immediately contained using conventional cleanup methods. If the overflow can be contained, the debris will be limited to the affected area, and the area will be cleaned. For spills on private property that are determined to be the responsibility of the property owner, the Utility will inform the property owner of their responsibility to clean up the area as soon as possible, and offer guidance in avoiding contact with the spill and cleaning up the area. In cases where the flow in the affected area is severe in nature for example; construction- related issues such as force main break, or a backup into a building/private property caused by a public sewer, then the flow being contained and transmitted from the impacted area will be reduced without causing additional releases upstream or downstream of the impacted area. In extreme cases, the following measures may be used to reduce the volume of the release:
Temporary bypass pumps to remove wastewater from upstream sewerline
Use of vacuum trucks to remove wastewater from the upstream sewerline and any nearby catch basins within the CSS and transport the wastewater to operational sewers downstream of the cause of the release
Manually controlling pump stations that discharge upstream of the impacted area For backups to private property that are determined to be caused by a blockage in public sewer system:
The responding crew will immediately proceed to the site with a vacuum truck and relieve the blockage using the recovery and cleanup processes in this document.
On-call management will gather the incident information and forward the information following the SSO/CSS Reporting SOP in this document.
On-call management will advise the property owner to avoid contact with the spill and provide guidance when cleaning up the property owner’s site.
The property owner will be provided with the City of Evansville Law Department contact information for claim information (see Section 4.2.1). Further details for the recovery and cleanup process and the standard operating procedures are discussed in Section 2.6 below.
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2.6 Correct, Contain, Recovery, and Cleanup After completing preliminary assessment of the overflow, proper measures take place to correct and contain the overflow and to implement appropriate cleanup activities. When applicable, the response crew will use cones, arrow boards, and strobe lights on the truck to establish a control zone around the perimeter of the impacted area to prevent public access. The response crew will determine if additional traffic control measures are required, and will follow traffic control standard operating procedure (Appendix F). Appropriate control zone mechanisms will be site-specific and will remain in place through the completion of cleanup activities. 2.6.1 Containment Containment of an overflow will be the Utility’s maintenance crew responder’s first priority; the methods used will vary on a case-by-case basis. The on-call supervisor or manager and maintenance crew responders will:
Identify and obtain the necessary equipment and materials to contain the overflow if not readily available
Take immediate steps to contain the overflow (for example, block or bag storm drains, recover through vacuum truck).
2.6.2 Additional Containment Measures In the event of a prolonged sewerline blockage or a sewerline collapse, the on-call manager will determine the necessity of a portable bypass pumping operation around the obstruction and, if bypass pumping is necessary, will follow the Response, Recovery, and Cleanup SOP found in Appendix G. The procedure includes but is not limited to these steps:
Determine the proper size and number of pumps required to effectively handle the overflow. Determine if an onsite backup pump is needed in case the primary pump malfunctions.
Continually monitor the bypass pumping operation (for example, manage equipment on hand, materials, and manpower).
Notify the Regulatory Compliance Staff of the status of the additional measures required and status of the emergency repairs.
2-6 May 1, 2017 SECTION 2—RESPONSE
2.6.3 Correcting the Overflow Response personnel are to begin the task of correcting the cause of the overflow immediately. This response may include removing a blockage such as roots, fats, oils, grease, or debris from a mainline or repairing a structural problem with a sewerline, manhole, or force main or mechanical/electrical failures with pump stations or WWTP equipment. The time it takes to correct the cause of the overflow depends on the determined cause. In all cases, correction will be as expeditious as possible and measures will be implemented to prevent recurring overflows while the cause is corrected. When necessary, contractor services may be requested as an additional resource to abate the overflow (see Section 2.6.4.1). 2.6.4 Recovery and Cleanup Cleanup will be completed for all SSOs following containment and correction of the overflow. The Utility’s cleanup and recovery efforts will be directed at returning the affected area to a pre-release condition as quickly and efficiently as possible. Cleanup actions by the Utility vary depending upon the situation, and the actions selected will be performed thoroughly. Response, recovery, and cleanup SOPs (Appendix G) will be followed. The general process is as follows:
The response crew will use appropriate personal protective equipment (PPE) during cleanup and recovery.
The affected area from the overflow will be cleaned up as much as possible using rakes, shovels, squeegees, hand picker tools, and vacuum equipment. The affected overflow area will be evaluated for appropriate disinfection. This may include applying an appropriate layer of lime to the affected area to absorb liquid and raise pH to reduce pathogen levels. An appropriate buffer zone will be maintained between limed areas and surface waters and waters of the state or United States. The immediate area around the overflow site will be inspected to ensure that no visual residue remains, including solids, papers, and rags, etc. The Utility’s Regulatory Compliance Department will be contacted prior to performing any washdown or flushing of spill areas within the CSS in response to customer complaints (for example, complaints about odor). If hydrant flushing is warranted and ultimately performed, then all solids and debris must be collected and disposed of properly. All washdown water must be returned to the CSS. If release reaches waters of the state, hydrant water may be used to raise oxygen levels in the affected waterway to improve conditions for aquatic life. In this situation, dechlorination
May 1, 2017 2-7 SEWER OVERFLOW RESPONSE PLAN VERSION 2.1 EVANSVILLE WATER AND SEWER UTILITY mats will be used to achieve significant dechlorination of hydrant water before flow reaches the waterway until the situation can be brought under control. The decision to use hydrant water will be the Collection System Manager’s or on-call management’s if the Collection System Manager is unavailable. 2.6.4.1 Additional Resources If the maintenance crew is unable to contain and clean up the affected area with typical maintenance equipment, then the next step will be to bring in contractor or other construction support. The following steps will be taken by on-call management: Assess and mark the boundaries of the suspected area for all utility service locations (marking materials such as white paint will be used to mark the boundaries, and “Locate” will be written to indicate the area). Call or instruct Dispatch to call (811) CALL BEFORE YOU DIG. Determine the additional resources and type of construction crew required to perform the task(s). Call or instruct Dispatch to call for the additional resources using existing approved contact lists as deemed necessary. Enlist appropriate contract services. Manage actions taken by the additional construction crew to clean up the affected area. Ensure actions are documented following the SSO reporting procedures.
2-8 May 1, 2017 SECTION 3 Overflow Analysis Investigation
The objective of an overflow analysis investigation is to determine the root cause of the SSO or CSS releases (including building and property backups) and to identify corrective action(s) needed to reduce or eliminate the potential for recurrence. An investigation for each event will be performed by the Utility to readily determine the root cause of the overflow. The investigation will include but is not limited to:
Review the completed work orders of SSO/CSS releases, including building and property backups.
Interviewing the crew that responded to the spill. Reviewing all available photos of the affected areas.
Conduct a CCTV pipeline inspection within 10 days of the event to determine condition the line segment and identify corrective actions if the cause of the overflow is not readily apparent.
Reviewing video from CCTV inspections.
The Utility’s overflow analysis investigation program demands an on-call management discipline that seeks to find root causes of SSOs, CSS Releases and Building Property Backups in the collection system and ultimately solve them over time. This includes post investigative work such as:
Review remediation open work orders, completed work orders and any other maintenance records associated with system problems related to the SSO/CSS releases, including building and property backups. Reviewing past preventative maintenance records and adjust inspection and cleaning frequency to optimize sewer system preventative maintenance. The Regulatory Compliance Department is responsible to monitor, review, and revise the Utility’s overflow analysis investigation program and maintain electronic and hard copy spreadsheets of the overflow analysis for each date of release for Semi-Annual Reporting requirements.
May 1. 2017 3-1
SECTION 4 Reporting
4.1 Overview The Utility will report any manhole releases, lift station releases, WWTP releases, cleanout releases, or sewage backups (such as basements that backed up because the city sewer was not flowing) to the IDEM within 24 hours. Notification of the release will be sent to the Regulatory Compliance department for reporting. The remainder of Section 4 details the methods and procedures the Utility has implemented to meet Consent Decree regulatory reporting requirements. 4.2 Field Reporting The Utility will collect accurate and complete field data for all SSOs required to be submitted to the IDEM. Additionally, field data is essential to tracking overflow history of the Utility owned assets such as sewer lines, pumping stations, and manholes and will aid the Utility in enhancing response and abatement strategies. The Utility will collect field data in the event of an overflow, spill, release, discharge, or diversion of untreated or partially treated wastewater from the sewer system. The collection system maintenance crew will ensure that the following required information is recorded on a SSO/CSS release or building/property backup work order. 1. Category of the event (SSO, CSS, Building/Property Backup, or No Release) a. SSO will be checked for an overflow within the sanitary system. b. CSS will be checked for an overflow within the CSS. c. Building/Property Backup will be checked for an overflow backing up into building. 2. Date and Time Call was received 3. Date and Time of Site Arrival 4. Date and Time of Site Departure 5. Date and Time that the Release Ended (estimated as close as possible) 6. Location Address
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7. Upstream Manhole ID number 8. Downstream Manhole ID number 9. Probable Cause “As Found” Condition(s) 10. Estimated Release Volume 11. Visual Impact Observed 12. Actions to Repair/Mitigate 13. Control Zone/Public Notification Action Taken
4.2.1 Building / Property Backup Reporting The Sewer Maintenance Department will use the work order system to document all calls for building/property backups. For backups determined to be the responsibility of the building/property owner, the Utility will:
notify the property owner of their responsibility for cleanup on the private property provide guidance to the property owner to minimize property damage and health effects such as avoiding the spill and arranging for cleanup of the property as soon as possible For building/property backups resulting from a failure of a Utility-owned sewer line, property owners are referred to the City of Evansville Law Department for claim information.
The City of Evansville Law Department contact information is: City of Evansville Law Department 20 NW First Street PO Box 916 Evansville, IN 47706-0916 812-424-7575
4-2 May 1, 2017 SECTION 4—REPORTING
4.2.2 Field Report Review and Data Entry On-call management will be responsible to review all work orders for complete and accurate data. Remediation work is completed when conditions allow. 4.3 Regulatory Reporting The completed Cityworks work order for all SSO/CSS Releases and building/property backups will be sent to Regulatory Compliance for reporting. 4.3.1 Initial Discharge Report The Utility’s Regulatory Compliance Staff will perform final review of all SSO/CSS Releases and building/property backups Work Orders for state reporting, and complete and forward the electronic Bypass/Overflow Incident Report Form No. 48373 (Appendix I) to the following departments: Indiana Department of Environmental Management Heath Dill Office of Water Quality, Compliance Evaluation Section 100 N. Senate Ave. Mail Code 61-53 IGCN 1003 Indianapolis, IN 46204-2251 Phone: 317-232-8670 E-mail: [email protected]
United States Environmental Protection Agency Keith Middleton, PE Environmental Engineer/Enforcement Officer Water Division Enforcement & Compliance Assurance Branch USEPA, Region 5 WC-15J; #15046 77 West Jackson Blvd. Chicago, IL 60604-3590 Phone: 312-886-6465 Fax: 312-697-25346090 E-mail: [email protected]
May 1, 2017 4-3 SEWER OVERFLOW RESPONSE PLAN VERSION 2.2 EVANSVILLE WATER AND SEWER UTILITY
Vanderburgh County Health Department Christian Borowiecki Environmental Health Supervisor 420 Mulberry St. Evansville, IN 47740 Phone: 812-435-5620 E-mail: [email protected] In addition, all state reporting will be filed with the Utility’s Director, Regulatory Compliance Department Data Coordinator file, and Collection Systems Department administrative file. Note: IDEM, USEPA, and Vanderburgh Health Department may request changes to the recipient list. 4.3.2 Monthly Discharge Monitoring Report (DMR) By the 28th day of the month following the month being reported, the Utility’s Regulatory Compliance Department will complete a summary reconciliation report of all remediation work
4-4 May 1, 2017 SECTION 5 Public Notification
The Utility Sewer Department is available 24 hours per day and 7 days per week for all customer inquiries, incident reporting, and designated service requests by calling the Emergency Sewer Service number at 812-421-2130. Customers can obtain this number from the Sewer Department link on the City’s website (www.evansvillegov.org) or listing in the Evansville Phone Directory. The Utility is dedicated to ensuring that mechanisms are in place for public notification and general awareness of overflows. The Utility’s methods of public notification include:
Posting notices of polluted surface water bodies or ground surfaces in public areas on city-owned property to provide a warning of potential public health risks due to sewage contamination (Appendix J).
The Utility’s immediate response to a potential overflow includes: 1. Identify the location and population surroundings of the potential overflow. 2. Estimate the volume and direction of the potential overflow and whether the potential overflow has or may enter waters of the state or has or may backup into basements/property. 3. Estimate the duration of the potential overflow. 4. Contact the Regulatory Staff with the location, volume, and duration information. 5. On call management, will document the notification method(s) used to inform the property owner in the comments section of the overflow work order for localized events. Typical contact methods are by phone or face to face at the time of the response to the spill. 6. Determine if spill is the responsibility of the property owner and provide guidance to minimize property damage and health effects such as avoiding the spill and arranging for cleanup of the property as soon as possible, and; 7. Recommend contacting professional licensed services for cleanup
In the event that a spill may potentially pose a risk to water quality, aquatic life, or human health, the Utility Director will determine whether the media is notified based from but not limited to details of the spill such as: o Location and size of the spill o Potential for human contact such as Ohio River recreational areas o Affected fish recreational areas o Affected waterbodies or wells and estimated survival rate of pathogens. Frequent updates to the “Combined Sewer Overflow” link on the City of Evansville Web site (http://maps.evansvillegis.com/CSOViewer) will be added to inform the public of current CSO, SSO, CSS, and building/property backup locations and their respective status. In addition, the Utility provides an e-mail notification link to interested parties that want to receive CSO notifications.
May 1, 2017 5-1 SEWER OVERFLOW RESPONSE PLAN VERSION 2.1 EVANSVILLE WATER AND SEWER UTILITY
Providing a list of Key Utility Contacts (Appendix A) for Dispatch use during 24 hour 7 days per week coverage for all customer inquiries and service requests.
Providing a Sewer Department link that includes the Emergency Sewer Service number 812- 412-2130 on the City’s web site at (www.evansvillegov.org) for the public to report a spill or backup.
Public information on the City’s Web site (http://www.ewsu.com/index.aspx?page=3631) contains information regarding sewer backups, which includes backflow preventer operation and the benefit of having one installed. For new construction, a backflow preventer is required by the City of Evansville Municipal Code, Section 13.05.240 Construction Requirements. A link is provided on the Web site for the public view the code. The City’s Municipal Code, Section 13.05.020 Pressure Pump Sewer System, provides installation and maintenance requirements for pressure pump sewer systems such as grinding pumps.
Periodic Web site update to inform the public of topics on in-progress and planned sewer projects related to CSO impacts and provide suggested environmental information that property owners can use to keep pollutants from entering the storm sewer system.
Additional public information about building/property backups for property owners such as door hangers, distribution flyers and mailers such as a sewer backup fact sheet to inform property owners of the risks associated with backups including tips to safely clean up or obtain cleanup services. There is also information about fats, oils, and grease, roots, and backflow preventers to encourage property owners to maintain their private sewers.
5-2 May 1, 2017 SECTION 6 Training and Preparedness
SORP training will be provided to all Utility employees, most contractors, and most associated personnel as part of Consent Decree training requirements. Periodic training will rely on and be designed on feedback regarding the quality of field response performance and can help to identify and correct performance gaps. The SORP will be reviewed annually by, among others, the Utility’s Collection System Manager, Lift Station Manager, Wastewater Superintendent, Engineering Department, and Regulatory Compliance Department, and will be revised as appropriate to reflect changes in policies, procedures, or contact information and to achieve objectives, improve processes, and remain current. An overview of the SORP document will occur annually for all Utility employees and for all new employee orientations. Semiannually, on-call management will be required to review the SOPs listed in Appendix K: Dispatch Response, SSO/CSS Reporting, Traffic Control, and Response, Recovery, and Cleanup. The Utility ensures training is completed for personnel who may be engaged in overflow response and reporting. The Regulatory Compliance Department oversees training guidelines and ensures that training is completed and documented with both hard copy and electronic information including:
Training document title Date taken Attendees’ names Department The Regulatory Compliance contacts personnel who have missed required training and follows up to ensure that they are trained. In addition, the Sewer Maintenance Department continues the current practice of holding periodic “tailgate training” sessions to discuss field response safety measures. The Utility ensures that contractors are familiar with the SORP and ensure that they practice full adherence to the principles and guidelines of the SORP for their respective contracts with the Utility. As the SORP is revised or field response SOPs are changed, personnel will be trained before the effective date of the field response changes.
May 1, 2017 6-1
SEWER OVERFLOW RESPONSE PLAN VERSION 2.2 EVANSVILLE WATER AND SEWER UTILITY
6.1 Training Records The Utility’s Regulatory Compliance Department will be responsible for scheduling and providing all emergency response and reporting training and will ensure that training is completed by personnel who miss any required training. The Utility’s Regulatory Compliance Department will maintain both hard copies and electronic records of documentation completed during training and participation in tailgate meetings for each utility employee and the current contractor. The type of information maintained includes but is not limited to sign-up sheets that list the employee’s name date of training, and SOP or topic of training or tailgate meeting. 6.2 SOP Training A list of SOP training and organizational participants can be found in Appendix K. Not all staff members within Utility will be required to complete training on each SOP (except for the annual SORP Overview, which all staff members must complete). As SORP SOPs are revised, additional training will be required prior to the effective date of the SOP revision.
6-2 May 1, 2017 Appendices
Appendix A Key Utility Contacts
Key Utility Contact Information
TABLE 1 City of Evansville Sewer Overflow Response Plan Phone Number Position Name Area Code (812) Email
Director of Utilities Allen Mounts 436-7853 [email protected]
Regulatory Compliance Jeff Merrick 436-7858 [email protected]
Wastewater Superintendent Harry Lawson 436-4487 [email protected] 483-8065 (cell)
CSO Manager Carl Gist 305-8068 [email protected]
Sewer Inspector Len Will 305-7514 [email protected]
Lift Station Supervisor Carl Clem 428-0557 [email protected]
Collection System Manager Travis Hildebrandt 421-2120 Ext. 2210 [email protected]
Deputy Director Utilities Engineering Mike Labitzke 421-2120 Ext 2228 [email protected]
East Plant Manager Joe Dickman 428-0548 [email protected]
West Plant Manager Chris Bauer 428-0557 [email protected]
Dispatch (Normal Business Hours) Marci Scheller 421-2120 Ext. 2229 [email protected]
Collection System Maintenance Bob Conner 421-2120 Ext. 2226 [email protected] Supervisor
Construction Maintenance Mark Lyon 421-2120 Ext. 2227 [email protected] Supervisor 455-0478 (cell)
Dispatch (After Hours) Union Staffed 421-2130 N/A
MAY 1, 2017 1 SEWER OVERFLOW RESPONSE PLAN VERSION 2.0 EVANSVILLE WATER AND SEWER UTILITY
TABLE 2 Utility Contact List CALL BEFORE YOU DIG 1-800-382-5544 or 811 Utility Contact Phone Number Email
Sewer and Water Mike Labitzke—EWSU (812) 421-2120 [email protected] Ext 2228
Vectren Jody Chapman (812) 491-4792 [email protected]
ATT Mark Clark, Engineering (812) 464-6041 [email protected] Deparment
Charter Daryl Hulsey, (812) 422-1167 [email protected] Communications Construction and Engineering Manager
WOW Cable provider Thomas Cheski (812) 469-0345 [email protected]
Drainage Easements Brent A. Schmitt, (812) 436-4990 [email protected] or Issues in the City City Engineer
Drainage Easements Jeffery D. Mueller, (812) 435-5117 [email protected] or Issues in the Vanderburgh County County Surveyor
2 MAY 1, 2017 Appendix B SORP Process Flow
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Appendix C Dispatch Response
Dispatch Response
DESCRIPTION: DISPATCH PROCEDURE FOR INCOMING CALLS RECEIVED REGARDING SEWER DEPARTMENT REQUEST FOR SERVICE
STANDARD OPERATING PROCEDURES GENERAL: Dispatch operates 24 hours per day and 7 days per week including Holidays. The Collection System Data Coordinator or customer service representative receives calls Monday through Friday (7:00 a.m. – 3:30 p.m.). Evening and Night Shift Dispatchers receive calls after hours (3:30 p.m. – 7:00 a.m.) on a rotating schedule. NOTE: Requests for Water Department Service shall follow Water Department standard procedures. STEP DESCRIPTION All incoming sewer request for service calls will be responded to immediately. Required information to be recorded. Y Time and Date call was received Y Attention: On Call Supervisor or Manager’s name Y Caller’s Full Name, Address and Phone Number 1 Y Service request for Sewer or Service request for Odor will be checked on the Sewer Department Complaint Order Y Dispatchers First and Last Name Y Sewer Department Complaint forms will be turned over to the Collection System Data Coordinator at the end of the evening and night shifts. Dispatch shall ask the caller general questions for spills/odor such as: Y Does the Customer have problems with any other drains at the property? Y Does the Customer have a cleanout (private lateral) and if so; 1a Y Has the Customer opened the cleanout and viewed any setting water? Y Where did you notice the described overflow occurring? (in front, back of the house, street) Y Where do you notice the odor coming from? (basement, sump pump, floor drain)
Dispatch Communication Tips Y Give the caller ample time to explain the situation and show interest in what the caller has to say regardless of how many times the issue has been reported Y Acknowledge the callers concerns and let them know that a response crew will be there as soon as possible to determine the source of the problem Y Express understanding and empathy for the inconveniences caused by the incident, but do not 1b admit fault. Y As much as possible keep the caller informed on what is being done and what will be done to correct the problem Y Keep conversation with caller professional and limit subject matter to the issue only. Avoid small talk Y Do not administer fault or blame on anyone. Calls Received during hours 7:00 a.m. to 3:30 p.m. Monday through Friday
Calls received during normal business hours Monday through Friday (7:00 a.m. – 03:30 p.m.) are 2 received by the Collection System Data Coordinator or Customer Service representative.
1 STEP DESCRIPTION The Collection System Data Coordinator or customer service representative will contact the Collection 3 System Maintenance Supervisor or on call manager for complaints within the collection system to respond immediately to all suspected overflow events. Calls Received after hours by the Night Desk (3:30 p.m. to 7:00 a.m. Monday through Friday, including Weekends & Holidays) All calls regarding sewer request for service received after hours including weekends and holidays 4 by the “Night Desk” will be logged on the Sewer Department Complaint Form (see attached) The Night Desk shall contact the on-call manager immediately with the quickest communication tool 5 available (e.g. phone, radio) and provide the information gathered from step 1 above. Night Desk shall follow all specific instructions provided by the on call supervisor or manager for 6 dispatching the appropriate response crew from existing approved call lists and shall contact approved utility locate services as necessary. Night Desk shall follow existing Sewer Construction Crew Call-in Procedure when a construction 7 crew is requested. Night Desk shall follow instructions received from the on call supervisor or manager and ensure that 8 all instructions are acknowledged by the response crew. In addition to this procedure, Night Desk will follow all existing documentation procedures and 9 communications procedures for their respective department. COMMENTS: SEE ATTACHED SEWER DEPARTMENT COMPLAINT ORDER
SEWER DEPARTMENT COMPLAINT ORDER
End of Procedure Appendix D SSO/CSS Release Reporting Standard Operating Procedure
SSO/CSS Building/Property Backup Reporting SOP
DESCRIPTION: EXPLAINS REPORTING AND DOCUMENTATION STEPS REQUIRED IN THE EVENT OF A SANITARY OR COMBINED SEWER SYSTEM OVERFLOW
Step STEP DESCRIPTION
1 In the event of a SSO or CSS release the SOP Response: Recovery and Cleanup Procedure will be followed and actions are to be documented using this SSO/CSS BUILDING/PROPERTY BACKUP Reporting procedure. SSO or CSS releases and building/property backups that are the responsibility of the City must be reported to the Indiana Department of Environmental Management (IDEM) within 24Hrs. Note: It is a Consent Decree requirement that accurate information of the release be recorded in a timely fashion 2 The on call manager and maintenance crew will notify the Utility Regulatory Compliance Staff for reportingT : Carlh Gist @ 812-305-8068 and Jeff Merrick @ 812-204-5018 3 Ane SSO / CSS Release work order will be completed by the collection system maintenance crew to recordo information in the event of a SSO / CSS release or Building/Private Property Backup. n c ACTIONS TO COMPLETE THE WORK ORDER FORM A a 4 Record the Date and Time of the call from Dispatch. C l T 5 Recordl the Date and Time of the Crew’s arrival to the affected area. I s O 6 Checku the appropriate work order type (SSO, CSS, Building/Property Backup or No Release). N S 7 Recorda the location address and the nearest upstream and downstream manhole ID. T n O 8 dUse the comments section of the work order to describe the event including probable cause if applicable, C Ccollection system components affected, and receiving area impacted O M 9 Rl ecord the Date and Time of when the release ended. e P 10 aUse the comments section of the work order to describe all actions taken to prevent, minimize, or mitigate L ndamage including clean up and treatment of affected area. E T 11 Completeu all applicable remaining custom fields section of the work order including the work order reason E andp document if the property owner notified and the method of notification. ) T 12 Record the Estimated Release Volume Amount. H TNote: The Spill/SSO Volume Calculation Guidelines found in Appendix B of the SORP Protocol is a E ereference guide in calculating the volume amount W O 13 rCreate a child work order if any additional work is necessary to avoid recurrence. R r 14 Submit completed work order to collection system maintenance supervisor or on call manager. Notify K i regulatory compliance of completed work order to report the release and to initiate the overflow analysis O C investigation. R a D r E l R @ F 3 O R May 1, 2017 1 M
Appendix E Spill/SSO Volume Calculation Guidance
Spill/SSO Volume Calculation Guidance
Spill Volume Calculation The following sections provide guidance for estimating spill/Sanitary Sewer Overflow (SSO) volume for manholes, broken pipes, wet weather, and pump station outage. This is provided as guidance only, however, if a different method is used to calculate spill volume, that method should be validated and described. If flow meter volumes are available for any of these type of events the metered data should always be utilized, unless there is concern the data is not reflective. Broken Lines Table 1 provides Spill Volume Calculation by Flow Rate for different size pipes.
TABLE 1 Sanitary Sewer Flow Rates For Spill Determinations City of Evansville Sewer Overflow Response Plan Depth of Flow (inches) Pipe Size
6 8 10 12 15 18 21 24 30
1 15 20 25 30 35 40 45 50 100
2 50 60 70 80 85 95 105 125 145
3 90 110 125 135 150 175 185 210 230
4 125 160 180 200 235 260 285 320 350
5 155 190 240 280 315 360 380 445 470
6 180 260 310 355 415 455 500 555 630
7 290 370 425 495 570 620 695 770
8 320 430 500 600 680 760 815 1010
9 465 575 690 800 890 965 1260
10 490 625 775 905 1005 1120 1360
11 685 870 1020 1135 1275 1490
12 715 935 1130 1260 1410 1630
13 1020 1240 1415 1580 1870
14 1070 1345 1520 1690 2110
15 1105 1425 1650 1850 2220
16 1495 1760 1990 2560
17 1550 1880 2110 2730
MAY 1, 2017 1 SEWER OVERFLOW RESPONSE PLAN VERSION 2.0 EVANSVILLE WATER AND SEWER UTILITY
TABLE 1 Sanitary Sewer Flow Rates For Spill Determinations City of Evansville Sewer Overflow Response Plan Depth of Flow (inches) Pipe Size
18 1595 1980 2285 2940
19 2050 2410 3100
20 2115 2530 3330
21 2160 2630 3510
22 2700 3780
23 2765 3900
24 2820 4040
4130
4200
4250
4320
4370
4400
Gallons per Minute @ V=2.0 feet per second (ft/sec) and n=0.013; Adjust accordingly for flat or steep sloped sewers.
Spill Calculation Procedures 1. Determine and record the time of initial caller notification of sewer spill. (Note time from initial call to estimate start time) 2. Measure and record the flow in inches immediately downstream of spill or blockage and determine flow rate in gallons per minute (gpm) using table above. Record the pipe size in inches. 3. Clear obstacles from blocked sewer; allow free and steady flow to stabilize. Note time the flow stabilizes. 4. Measure the depth of flow in inches in the previously blocked sewer and determine flow rate from table above. 5. Subtract the flow rate from the downstream sewer determined in 2 above from the flow rate from the previously blocked sewer determined in 4 above and multiply the result by the elapsed minutes from notification to clearance. 6. Report total amount spilled pursuant to SORP.
2 MAY 1, 2017 SPILL/SSO VOLUME CALCULATION GUIDANCE
Manhole Overflows (Adapted from Guidance from GA EPD) The following guidance can used in estimating the rate of loss of flow out of manholes. As this is an estimate, judgment by the observing person and/or estimator must always be used. The following manhole SSO quantification methods are provided as guidance. Estimating Spill Flow Rates For Overflowing Manholes This is a visual estimating method. Please see the Reference Sheet on the following page. Source: City of San Diego Metropolitan Wastewater Department.
MAY 1, 2017 3 SEWER OVERFLOW RESPONSE PLAN VERSION 2.0 EVANSVILLE WATER AND SEWER UTILITY
4 MAY 1, 2017 SPILL/SSO VOLUME CALCULATION GUIDANCE
Volume of SSO at Manhole Length x Width x Depth x 7.48 = gallons Spill area = 20 feet by 30 feet = 600 sq. ft. Depths of spill = 3 inches = 0.25 feet Volume = 20 x 30 x 0.25 x 7.48 = 1,122 gallons Wet Weather Overflow Calculation The following can be used to help in estimating the rate of loss of flow out of manholes. As this is an estimate, judgment by the observing person and/or estimator must always be used. All calculations are based on an estimate of the size of the opening involved, the velocity of flow through the opening, and the duration of time the overflow occurred. In most all occurrences, the opening size and velocity will change over an event from low to high back to low. Judgment on an average condition must thus be attempted to reach a realistic rate of loss. Loss through vent holes Size of opening: Assume holes at 1- inch diameter Area = (number of holes) (π) (D²/4) (1ft²/144) Area = (number of holes) (3.14) (1/4) (1/144) Area = (number of holes) (0.0055ft²/hole)
TABLE 2 Velocity Plume Guide Velocity through holes, based on Velocity Head = (Velocity²/2g) Plume height Velocity
1-inch 2.0 ft/sec
2-inch 3.3 ft/sec
3-inch 4.0 ft/sec
4-inch 4.6 ft/sec
5-inch 5.2 ft/sec
6-inch 5.7 ft/sec
Time = convert to minutes Volume (Gal.) = (Area) (Velocity) (Time) (448 gpm/cfs)
Example: Top with 6 holes, flow through holes makes a 1-inch high plume, last for 4 hours, 15 minutes. Volume = (6 holes x 0.0055 ft²/hole) (2ft/sec) (255 min) (448 gpm/cfs) Volume = (0.033) (2) (255) (448) = 7540 gallons
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Loss around edge of non-vented cover Size of opening: As the weight of manhole lid will generally hold it in place until internal pressures exceed 0.4 pounds/sq. in., loss occurs through imperfections, grit, etc. between the lid and manhole frame. Observations are generally a vertical ring of water from side gap between the lid and frame of approximately ¼ inch width. Area = (π) (D) (¼ inch) (1/12 in/ft) = (3.14) (2ft) (1/4) (1/12) Area = 0.131 ft² Velocity through gap (see vertical plume guide above, D.3.A.2.) Time – convert to minutes Example: Manhole with 4-inch plume around edge for 2 hours, 15 minutes. Volume (Gal.) = (Area) (Velocity) (Time) (448 gpm/cfs) = (0.131 ft²) (4.6 ft/sec) (135) (448) = 36,445 gallons Loss from tilted cover Size of opening: Some estimate has to be made in the field concerning how much gap exists in order to do this calculation. For the following amounts of lift of one side, the areas are as follows: A = (π) (D) (in of lift) (1/12 ft/in) (1/2) A = (3.14) (2ft) (in. of lift) (1/12) (1/2) A = 0.262 (in. of lift)
Lift (inches) Area (ft²)
1 0.262
2 0.524
3 0.786
4 1.048
Velocity through opening This must be estimated from visual observation. A low rate would be 2/ft/sec, moderate rate at 4 to 5 ft/sec, high rates up to 7 ft/sec. Over 7 ft/sec, the lid will probably blow off the manhole. The gap (lift) will generally increase with higher velocity as well. Time – convert to minutes Volume (Gal.) = (Area) (Velocity) (Time) (448 gpm/cfs)
6 MAY 1, 2017 SPILL/SSO VOLUME CALCULATION GUIDANCE
Example: Field observation of 2-inch gap and velocity of 4 ft/sec for a period of 3 hours, 30 minutes. Volume (Gal.) = (0.524 ft²) (4ft/sec) (210min) (448) = 197,192 gallons Loss from Manhole without a lid in place If no cover exists, an estimate of the average height the water column (plume) extends above the top of the manhole frame must be made. Use the height to velocity estimate from (A) above to estimate the velocity. Be sure to adjust the height estimate downward for the effects of debris around the edge of the rim, which will cause the height to be incorrectly high. Area = (π) (D²/4) = (3.14) (2²/4) = 3.14 ft² Velocity – from field observation of water column height Time - convert to minutes Volume (Gal.) = (Area) (Velocity) (Time) (448 gpm/cfs) Example: A manhole without a lid was observed to have an overflow with a 3 – inch high column of water for a period of 6 hours, 10 minutes Volume (Gal.) = (3.14) (4.0 ft /sec) (370) (448) Volume = 2,081,946 gallons Other Generally approach of estimating a cross sectional area where the flow is leaving and a velocity of flow can be used to determine a rate. This can be applied to any situation. Several observations over an event to estimate the area and velocity are better than a single observation. The overflow examples above assume a constant rate over the period which will estimate volumes too high. As an example, if an hour at the beginning and end of each event is assumed for the flow to build up from zero to maximum and back to zero, a calculation could be done as follows: Example: A manhole with a cover tilted open 2 inches with an estimated velocity of 4 ft/sec at its worst rate of loss for two hours and about 1-inch tilt with a velocity of 2 ft/sec observed at two other occasion over a 7-hour total event. Worst case: 2 hours, 2 inched tilt, 4 ft/sec Other times: 1 inch tilt, 2 ft/sec, time unknown Total overflow time: 7 hours Divide total of 7 hours into several periods
1st hour: Start to 1-inch tilt, 2 ft/sec Volume (Gal.) = (Area) (Velocity) (Time) (448) x 50% = (0.262) (2) (60) (448) (0.50) = 7,043 gallons 7th hour: 1-inch tilt, 2 ft/ sec down to end
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Same as above situation: Volume = 7,043 gallons 5 remaining hours: 2 hours at 2-inch tilt, 4 ft/sec 3 hours at 1-inch tilt, 2 ft. sec Volume = (0.524) (4 ft/sec) (120 min) (448) = 112,681 gallons Volume = (0.262) (2 ft/sec) (180 min) (448) = 42,255 gallons Event Total = 7,043 + 7,043 + 112,681 + 42,255 = 169,022 gallons
END OF SPILL/SSO VOLUME CALCULATION GUIDELINE PROCEDURE
8 MAY 1, 2017 Appendix F Traffic Control Standard Operating Procedure
Traffic Control SOP
DESCRIPTION: Review of traffic control requirements for various work situations
IS WORK SPACE A CONFINED SPACE? IF YES; COMPLETE ALL OSHA REQUIREMENTS FOR CONFINED SPACE ENTRY BEFORE PROCEEDING
PERSONAL SAFETY EQUIPMENT REQUIRED X HARD HAT X SAFETY VEST X SAFETY GLASSES/GOGGLES FACE SHIELD/DUST MASK X NOISE PROTECTORS PROTECTIVE BODY SUIT X HARD SOLED BOOTS RESPIRATORS X LEATHER GLOVES OTHER [INDICATE]
# EMP REQUIRED LEVEL VEHICLE TYPE UP TO 11 CDL WITH TANKER COMBINATION TRUCK ENDORSEMENT
MATERIALS AS NEEDED DESCRIPTION TRAFFIC CONES BARRICADES CAUTION TAPE
STANDARD OPERATING PROCEDURES
STEP DESCRIPTION POSSIBLE PREVENTATIVE HAZARDS ACTIONS 1 The maintenance crew will evaluate the need for Traffic Follow all traffic control traffic control and contact on call supervisor or safety requirements and manager if additional traffic control measures are watch traffic carefully required 2 On call supervisor will contact Dispatch to engage Traffic Follow all traffic control Water Department employees trained in traffic control safety requirements and if additional traffic control measures are required. The watch traffic carefully Utility may also use other sources to engage additional traffic control if necessary 3 Work is completed following SOP Cleanup and Traffic Follow all traffic control Recovery safety requirements and watch traffic carefully 4 The Utility will remove all traffic control devices after Traffic Follow all traffic control completion of work, except those required for paving safety requirements and repair use or other needs if work is not completed. watch traffic carefully
May 1, 2017 1 SEWER OVERFLOW RESPONSE PLAN VERSION 2.2 EVANSVILLE WATER AND SEWER UTILITY
STEP DESCRIPTION POSSIBLE PREVENTATIVE HAZARDS ACTIONS COMMENTS: NO WORK SHOULD COMMENCE UNTIL ALL TRAFFIC CONTROL DEVICES ARE IN PLACE. ON CALL SUPERVISOR MUST NOTIFY DISPATCH, OR CENTRAL DISPATCH IF AFTER HOURS, OF ANY STREET CLOSING OR DIVERSIONS TO INSURE THAT EMERGENCY RESPONSE PERSONNEL ARE NOTIFIED. ON CALL SUPERVISOR MUST ALSO NOTIFY DISPATCH OR CENTRAL DISPATCH WHEN STREETS ARE OPENED BACK TO NORMAL TRAFFIC.
2 May 1, 2017 TRAFFIC CONTROL SOP
May 1, 2017 3 SEWER OVERFLOW RESPONSE PLAN VERSION 2.0 EVANSVILLE WATER AND SEWER UTILITY
4 May 1, 2017 TRAFFIC CONTROL SOP
May 1, 2017 5 SEWER OVERFLOW RESPONSE PLAN VERSION 2.0 EVANSVILLE WATER AND SEWER UTILITY
6 May 1, 2017 TRAFFIC CONTROL SOP
May 1, 2017 7 SEWER OVERFLOW RESPONSE PLAN VERSION 2.0 EVANSVILLE WATER AND SEWER UTILITY
8 May 1, 2017 TRAFFIC CONTROL SOP
May 1, 2017 9 SEWER OVERFLOW RESPONSE PLAN VERSION 2.0 EVANSVILLE WATER AND SEWER UTILITY
10 May 1, 2017 Appendix G Response, Recovery, and Cleanup Standard Operating Procedure
Response, Recovery, and Cleanup SOP
DESCRIPTION: EMERGENCY RESPONSE RECOVERY AND CLEANUP OF SPILLS/BACKUP
IS WORK SPACE A CONFINED SPACE? IF YES; COMPLETE ALL OSHA REQUIREMENTS FOR CONFINED SPACE ENTRY BEFORE PROCEEDING
PERSONAL PROTECTIVE EQUIPMENT REQUIRED X HARD HAT X SAFETY VEST X SAFETY GLASSES/GOGGLES X FACE SHIELD/DUST MASK X EAR / NOISE PROTECTION PROTECTIVE BODY SUIT X HARD SOLED BOOTS X RESPIRATORS X GLOVES OTHER [INDICATE]
# EMP REQUIRED LEVEL VEHICLE TYPE UP TO 11 CDL WITH TANKER COMBINATION TRUCK ENDORSMENT # MATERIALS AS NEEDED DESCRIPTION RAKES, PICKING TOOLS SHOVELS, BUCKETS , BROOMS DISINFECTANT AS NEEDED
STANDARD OPERATING PROCEDURE SAFETY: ALL RESPONSE EFFORTS SHALL INCLUDE FOLLOWING ALL TRAFFIC SAFETY AND RULES AND WEARING PROPER PPE STEP DESCRIPTION 1 Dispatch initiates first response following SOP Dispatch Response 2 Spills/backups of the sanitary sewer system or combined system are responded to immediately. 3 Site assessed to determine: Y the extent of the spill or backup (e.g. is it in a building, or in the street) Y the spill origin and potential receiving area Y Is the spill localized and non-threatening to public health or the environment? Y Is the spill threatening waters of the state? Y the spill impact (e.g. solids/debris/discoloration) Y the estimated release volume and precipitation amount (if applicable) Y if there is a backflow prevention device or cleanout on the property Y if the sewer main line of the affected area is flowing Y Proceed to the nearest upstream manhole, open the manhole and observe flow as running or not
1 STEP DESCRIPTION 4 If the sewer main line is flowing at the property site, the utility shall: Y explain to the customer that the blockage is in their lateral and that the utility does not remediate a lateral inside the property Y provide guidance to the property owner to minimize damage and health effects such as avoiding the spill Y recommend that they arrange for cleanup of the property as soon as possible and to contact a licensed plumber for clean up services Y document the method(s) used to inform the property owner on the SSO/CSS Release work order Note: at all times be courteous and polite to the customer 5 If the sewer main line is not flowing, then investigate the non-flowing sewer main for potential cause of the spill. If a backup into a building or property is determined to be caused by Utility owned sewer, then proceed with recovery, cleanup and follow the Building / Property Backup Reporting process in the SORP document Note: When possible, photographs of the affected area should be taken before and after recovery and cleanup effort. 6 The responding crew will determine the control zone necessary and will insure they are in place before any work commences. For major spills requiring traffic control REFER TO SOP Traffic Control
7 After control zone measures are taken, the response crew shall: Y Locate the nearest manhole downstream and upstream Y Use appropriate cleaning methods to clear the blockage. Refer to cleaning SOPs Sewer Manhole Inspection and Sewer Line C&I and Storm Drain Cleaning Y The affected area will be cleaned up as much as possible using rakes, shovels, squeegees etc. Y Apply lime as necessary 8 The spill must be reported (follow SOP SSO / CSS and Building/Property Backup Reporting) and shall be communicated immediately to the Regulatory Compliance Staff: Y Carl Gist at 812-305-8068 Y Jeff Merrick at 812-204-5018 9 In the event that the spill location may potentially pose a risk to water quality, aquatic life, or human health, reporting shall follow the reporting requirements of the National Pollutant Discharge Elimination System (NPDES) permit and the Utility Director determines whether the media will be notified. 10 If additional resources to limit flow to the impacted area are required, the Collection System Maintenance Supervisor, Manager or On Call manager may: Y Mark boundaries of the affected area for all utility service locations using white paint or equivalent. “LOCATE” shall be indicated within the boundary Y Call (811) CALL BEFORE YOU DIG for all locates Y Determine the size or type of additional crew (e.g., construction crew) and instruct Dispatch to contact resources using existing approved contact lists Y Determine temporary bypass pump(s) requirements as needed Y Determine manual control operation for pump station(s) that discharge upstream of the impacted area, as needed Y Manage additional equipment and resources to clean up the affected area Y Ensure all additional resources and actions are documented following SOP SSO / CSS and Building/Property Backup Reporting
2 STEP DESCRIPTION 11 Inspect the affected area and ensure that no visual residue remains (e.g. solids, papers, rags, dead animal carcasses etc.) Note: Photographs should be taken when possible 12 All documentation of the event shall follow SOP SSO / CSS and Building/Property Backup Reporting
END OF SOP RESPONSE, RECOVERY AND CLEANUP
3
Appendix H Manhole Inspection and Small Diameter C&I Standard Operating Procedure
Manhole Inspection and Small Diameter Sewer Line Cleaning & Inspection
DESCRIPTION: SMALL DIAMETER SEWER LINE CLEANING & INSPECTION SOP INCLUDING MANHOLE INSPECTION (for sewers less than 24 inches)
IS WORK SPACE A CONFINED SPACE? IF YES; COMPLETE ALL OSHA REQUIREMENTS FOR CONFINED SPACE ENTRY BEFORE PROCEEDING
PERSONAL PROTECTIVE EQUIPMENT REQUIRED
X HARD HAT X SAFETY VEST X SAFETY GLASSES/GOGGLES FACE SHIELD/DUST MASK X HEARING/EAR PROTECTION PROTECTIVE BODY SUIT X HARD SOLED BOOTS RESPIRATORS X GLOVES OTHER [INDICATE]
# EMP REQUIRED LEVEL VEHICLE TYPE
UP TO 11 CDL TANK VEHICLE COMBINATION TRUCK ENDORSEMENT
MATERIALS NEEDED DESCRIPTION
RAKES AS NEEDED, PICKUP TOOLS AS NEEDED, MANHOLE HOOKS, PRIBAR, CROWBAR AS NEEDED. SHOVELS AND BROOMS AS NEEDED, SUB-BASIN MAP, DAILY LOG
SAFETY FOLLOW ALL TRAFFIC SAFETY RULES, WEAR PROPER PERSONAL PROTECTIVE EQUIPMENT (PPE) STEP DESCRIPTION
1 The Utility issues CMOM basin work orders to the collection system maintenance crew during day shift hours. 2 Crew proceeds to work site. Crew will complete a work order for all cleaning activities. 3 Assess site to determine what traffic control devices are required by following the TRAFFIC CONTROL standard operating procedure. 4 Place combination truck close to the downstream manhole with the bulk of the truck body between oncoming traffic and hose operation controls 5 Open manhole cover and visually inspect the manhole for obvious structural defects and major leaks. Document findings on the Manhole Inspection Form if applicable. 6 Move the truck into position with reel directly over manhole. Manhole Inspection and Small Diameter Sewer Line Cleaning & Inspection STEP DESCRIPTION 7 Remove enough hose from reel to place nozzle into pipe. Untie anchor rope from combination truck and guide tiger tail (hose protector) into downstream manhole. Retie tiger tail anchor rope to truck.
8 Turn water on at combination truck and gradually turn throttle until it reaches; - New pipe - 1500 to 1800 psi - Shallow or old pipe – 1300 to 1500 psi 9 Push the hydraulic lever in to allow the hose to unreel and the nozzle to slide up the pipe to upstream manhole. 10 Have a crew member positioned at upstream manhole who listens for hose going through manhole while manhole cover remains on then notify the operator when cleaning nozzle has reached that point 11 Note any conditions found during inspection and cleaning on the work order and record the counter reading of footage being cleaned or rodded on the daily log. Note: If cleaning is a result of response to an overflow, then record the counter reading of footage being cleaned or rodded on the SSO / CSS Release Data Form. 12 Turn the reel control knob counter clockwise to reduce retrieval tension and slowly pull the hydraulic lever back. The rate of return should be kept at an average of 10 feet per minute. Maintain pressure range as defined above. 13 When it is time to vacuum the line, start the pony motor from outside – if applicable 14 Set up the vacuum tubes in the manhole – but not into water. Engage Power Take Off (PTO) and raise the rpm’s to mid-operating range – if applicable. Once engaged, increase the vacuum rpm’s to the proper operating range. 15 When vacuuming is complete, reduce the rpm’s and then disengage the PTO – if applicable. If no pony motor, reduce the rpm’s and disengage blower. 16 Remove vacuum tubes and replace on combination truck 17 Replace manhole lids and return all equipment to combination truck 18 Remove all traffic control devices 19 Complete all appropriate work orders regarding CMOM sub basin cleaning and submit to the collection systems maintenance supervisor for review.
COMMENTS: ATTACHMENTS: SAMPLE HAND RODDING OPERATION DIAGRAM / MANHOLE INSPECTION FORM Manhole Inspection and Small Diameter Sewer Line Cleaning & Inspection Date: MANHOLE INSPECTION Operator: Driver: City of Evansville Sewer Department
MH ID Precipitation: 1 = None, 2 = Light Rain, 3 = Heavy Rain, 4 = Snow Address: Ground Conditions: Street: 1 = Dry, 2 = Damp, 3 = Wet, 4 = Standing Water
Structure Types Inspected? Yes No 1 = ABS 6 = Ductile Iron 11 = VCP 2 = AC 7 = PVC 12 = Other Reason Not Inspected: 3 = Brick 8 = RCP 13 = UNK 4 = CCRPM 9 = TB 1 = C.N.L. 6 = Sealed Lid 5 = Cast Iron 10 = Truss 2 = D.N.E. 7 = Traffic 3 = Buried 8 = Dog G = Good / F = Fair / P = Poor / S = Severe COMMENTS 4 = Haz/Atmos. 9 = Other 5 = Unsafe (Circle one) Structure List Reason Code Type Location Code: Cover: ………………………… G F P S 1 = Paved Street 6 = Sidewalk a. Diameter: . (in.) 2 = Unpaved Street 7 = Parking Lot 3 = Paved 8 = Backyard b. Type: 1=Light Duty, 2=Heavy Duty, Intersection 9 = Ditch 3=Bolt Down, 4=Locking 4 = Unpaved 10 = Curb/Gutter Intersection 11 = Easement c. Vented Cover? Y = Yes, N = No 5 = Alley 12 = Private Residence Cover-to-Frame Fit: ……… G F P S MH Diameter: . (ft.) Frame: ……………………… G F P S MH Depth: . (ft.) Frame-to-Chimney Seal…... G F P S Chimney: ………………….. G F P S
General Reason Codes: Corbel: ……………………… G F P S 1 = Evidence of I/I Wall: ………………………... G F P S 2 = Active I/I 3 = Roots Bench: …………………….... G F P S 4 = Grease 5 = Debris Invert: ……………………… G F P S 6 = Grit Steps: ………………………. G F P S 7 = Structural Damage 8 = Corrosion/Deterioration a. No. Missing: 9 = Surcharge 10 = Collapse . 11 = Other (Describe) Appendix I Storm Drain Cleaning Standard Operating Procedure
Storm Drain Cleaning SOP
DESCRIPTION: FOR EMERGENCY CLEANING OF COMBINATION SEWER SYSTEM STORM DRAINS AND CATCH BASINS
IS WORK SPACE A CONFINED SPACE? IF YES; COMPLETE ALL OSHA REQUIREMENTS FOR CONFINED SPACE ENTRY BEFORE PROCEEDING
PERSONAL PROTECTIVE EQUIPMENT REQUIRED X HARD HAT X SAFETY VEST X SAFETY GLASSES/GOGGLES FACE SHIELD/DUST MASK X NOISE PROTECTORS X PROTECTIVE BODY SUIT X HARD SOLED BOOTS RESPIRATORS X LEATHER GLOVES OTHER [INDICATE]
# EMP REQUIRED LEVEL VEHICLE TYPE UP TO 11 CDL TANK COMBINATION TRUCK VEHICLE ENDORSEMENT
No. MATERIALS NEEDED DESCRIPTION RAKES AS NEEDED, PICKUP TOOLS AS NEEDED SHOVELS AS NEEDED BROOMS AS NEEDED
STANDARD OPERATING PROCEDURES
STEP DESCRIPTION POSSIBLE PREVENTATIVE HAZARDS ACTIONS 1 Crew proceeds to job site TRAFFIC FOLLOW ALL TRAFFIC SAFETY RULES 2 Maintenance crew will evaluate job site to TRAFFIC FOLLOW ALL determine what traffic control devices are TRAFFIC SAFETY required and will insure they are in place before RULES, WEAR work commences. PROPER PPE 3 For wet weather response, locate manhole TRAFFIC FOLLOW ALL downstream and upstream from work site to TRAFFIC SAFETY determine if the sewer main line is overloaded. RULES, WEAR PROPER PPE 4 If sewer main line is not open, then proceed to TRAFFIC FOLLOW ALL inlet not draining and position the combined truck TRAFFIC SAFETY near drain to be cleaned RULES, WEAR PROPER PPE
May 1, 2017 1 SEWER OVERFLOW RESPONSE PLAN VERSION 2.0 EVANSVILLE WATER AND SEWER UTILITY
STEP DESCRIPTION POSSIBLE PREVENTATIVE HAZARDS ACTIONS 5 Run the rodder hose from the combined truck TRAFFIC, CUTS, FOLLOW ALL towards sewer main from the inlet towards the BRUISES, TRAFFIC SAFETY main to clean inlet line. HAZARDOUS RULES, WEAR MATERIALS PROPER PPE 6 Vacuum out the inlet as needed to remove any TRAFFIC, CUTS, FOLLOW ALL debris and excess water. Repeat if required. BRUISES, TRAFFIC SAFETY HAZARDOUS RULES, WEAR MATERIALS PROPER PPE 7 Record all actions on the Work Order following N/A N/A SOP 8 Remove all traffic control devices TRAFFIC FOLLOW ALL TRAFFIC SAFETY RULES, WEAR PROPER PPE COMMENTS: NONE
2 May 1, 2017 Appendix J Bypass/Overflow Incident Report Form 48373
BYPASS / OVERFLOW INCIDENT REPORT Follow-up to Bypass report State Form 48373 (R6 / 6-15) previously sent on: Indiana Department of Environmental Management Office of Water Quality
INSTRUCTIONS: Complete all parts of this form and email signed copies to [email protected] or fax it to the Office of Water Quality (OWQ) at (317) 232-8637 or (317) 232-8406. Submittal of this report will satisfy the Office of Water Quality (OWQ) telephone and written bypass/overflow reporting requirements of your NPDES permit. You must use separate reports for different Overflow Types. IDEM will not accept multiple reports on the same form. You must fill out the form completely or it will be sent back to you for completion. If you have any questions while filling out the report form, please call the Compliance Program Coordinator at (317) 232-6770.
To report a spill or if the release is resulting in a fish kill or other severe environmental damage, immediately report the release to the Emergency Response Section spill response line at: (317) 233-7745 or toll free within Indiana at (888) 233-7745.
GENERAL INFORMATION (1) Facility Name (Organization) (2) Mailing Address (reporting organization) (3) County (4) NPDES Permit
RELEASE INFORMATION (Location 1) (5) Outfall (6) Date (mm/dd/yy) and Time (7) Date (mm/dd/yy) and Time (8) Location of Release: (streets address or (9) Latitude: (9) Longitude: Number: Release Began: Release Stopped: Manhole, Lift Station, Force Main etc.) (Deg Min Sec) (Deg Min Sec) AM AM PM PM (10) Amount of Flow Released (Always provide a volume.) (11) WWTP Flow During Release (12) Peak Hourly Flow Check one: Estimated Actual gallons MGD MGD (13) Overflow Type (Select one.) (14) Describe any damage to aquatic life or receiving stream. Sanitary Sewer Overflow Treatment Bypass (at wastewater plant) Prohibited Combined Sewer Overflow Dry Weather Combined Sewer Overflow (15) Reason for Bypass/Overflow (Select one or more.) Construction Related Power Failure Equipment Failure Other Exceeded Max Capacity Precipitation Inches Line Blockage (16) System Component(s) (17) Additional Description of the Bypass / Overflow Event: (18) Description of the Area Impacted (Select one or more.) (Check all that apply.) Manhole Affected Private Property House Lateral Basement Backup Pipe Failure Occurred at Treatment Plant Pump Station Failure Reached Public Land Treatment Bypassed Reached Receiving Water Other Influent Structure Name of Receiving Water Impacted: Air Relief Valve Sewer Clean Out
Describe Other: (in the box below)
(19) Organizations Notified by Facility (Select one or more.) IDEM Emergency Response Health Dept DNR Fish and Wildlife Local Emergency Management Other: (20) Actions Taken to Prevent, Minimize, or Mitigate Damage including Clean-up and Treatment of Affected Area (Select one or more of the following, then add a written description.) Removed Blockage Repaired Pipe Repaired Pump Station Other Lime Clean-up Debris
(21) Resolution: Actions Taken or Planned to Prevent Recurrence
CERTIFICATION AND SIGNATURE 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. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, 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. (The area below is for a handwritten signature or an electronic substitute then fax or scan to PDF for emailing.)
SIGNATURE: ______DATE (mm/dd/yy):_ ____ Individual Making Report (printed) Telephone Number Contact Email Date (mm/dd/yy) / Time IDEM AM Notified PM Bypass/Overflow Incident Report Instructions
Below are numbered instructions for completing the Bypass/Overflow Incident Report State Form 48373. Do not leave any fields blank. Incomplete forms will be returned. Bypass/Overflow Reports must be submitted by the facility/system that is responsible for the maintenance and oversight of the collection system where the discharge occurred. Please refer to these instructions while filling out the report:
1. Facility Name (Organization): The facility name as it appears on the NPDES permit. For wastewater systems which do not have an active NPDES permit please enter NONE in the box.
2. Mailing Address: The address where all IDEM communication is sent.
3. County: The County in which the permitted facility is physically located.
4. NPDES Permit: The permit number associated with the facility. For wastewater systems which do not have an active NPDES permit mark this space as either “Terminated” for systems which had an NPDES permit in the past or “NA” for systems which have never had an NPDES wastewater permit.
5. Outfall Number: The number of the outfall associated with the Bypass/Overflow Incident as identified in the NPDES permit. For discharge locations which have not been specifically listed in the permit, mark as “NA”.
6. Date and Time Release Began: If the exact date and time is not known, please indicate the date and time you became aware of the release.
7. Date and Time Release Ended: The exact date and time the release ended. If the release is ongoing at the time of the initial report submitted to meet the 24 reporting requirement, please leave this field blank and later resubmit an additional “Follow-up” report with the date and time that the discharge ended and check the “Follow-up to Bypass report previously sent on : ___” box in the upper right corner of the form.
8. Location of Release: The actual physical location of the release: Such as a Street Address; closest cross streets; Manhole ID; Lift Station; Force Main, etc. NOTE: Please give the most accurate information in regards to manholes, lift stations and force mains that can be referenced back to documentation at your facility.
9. Latitude and Longitude: The latitude and longitude fields on this report are now required by EPA; however, these fields can be left blank on the report if the sewer overflows are caused by an extreme weather event that flood the entire sewer system and are too numerous to count.
10. Amount of Flow Released: The flow released should be the best professional judgement from the facility on the estimated number of gallons (in MGD) of sewer overflow for each Sewer Overflow Discharge.
11. WWTP Flow During Release: The flow of the treatment plant when the release occurs.
12. WWTP Peak Design Flow: The observed peak flow rate treated through the wastewater treatment plant in one hour.
13. Overflow Type: Check one and only one box that best applies to the type of incident. NOTE: Dry weather CSO is generally interpreted as where there has been less than 0.1 inch of precipitation within the proceeding seventy-two (72) hours (three (3) days). Prohibited CSO discharges are defined as discharges from CSO outfalls identified in Attachment A of the NPDES permit as being “prohibited”.
14. Describe any damage to aquatic life or receiving stream: Describe the conditions of the receiving stream and any aquatic life impaired by the incident.
15. Reason for Bypass/Overflow: Check all the boxes that apply to the specific incident.
16. Systems Component(s): Check all the boxes of components that are/were involved in the incident.
17. Additional Description of the Bypass/Overflow Incident: Provide additional detailed information regarding why the incident occurred that does not fit in the check boxes and supplemental details about the discharge event.
18. Description of the Area Impacted: Check all boxes of area(s) that were/are directly impacted by the discharge. If the discharge reached receiving waters identify those by name whenever possible.
19. Organizations Notified by Facility: Check all of the boxes that apply.
20. Actions Taken to Prevent, Minimize, or Mitigate Damage Including Clean-up and Treatment of Affected Area: Select all boxes that apply and then add additional description in box below.
21. Resolution: Actions Taken or Planned to Prevent Recurrence: Describe all actions taken and actions that will be taken to prevent the incident from reoccurring in the future.
Certification and Signature: Complete this box in its entirety. NOTE: The person signing the document should be authorized to legally sign as a representative for the facility. Appendix K CSO Signage
CSO Signage CSO Signage Locations
CSO Name Receiving Water Address
001 Bee Slough at Kentucky Avenue Bee Slough 1898 Shadewood Avenue 002 Bee Slough at Cass Avenue Bee Slough 1528 Veterans Memorial Pkwy 004 Bee Slough at (Adams , K4) Bee Slough 69 Shawnee Drive 006 Fulton Avenue Pumping Station Ohio River Fulton Ave. and Riverside Drive 008 Chestnut Street Ohio River 299 S. E. Riverside Drive 010 Dress Plaza Ohio River 99 N. W. Riverside Drive 011 Weinbach Lift Station (Oakhill Road) Pigeon Creek 2060 Maxwell Avenue 012 Maryland Street-West Bank Pigeon Creek 1761 W. Maryland 013 Delaware Street Pigeon Creek 625 N. 7th Avenue 014 Dresden Street Pigeon Creek 1710 Dresden Street 015 7th Avenue East Ohio River 1499 John Street 016 Franklin Street Pigeon Creek 1520 W. Franklin Street 017 6th Avenue Pigeon Creek 2499 N. 6th Avenue 018 Oakley Street Pigeon Creek 699 Dresden Street 020 9th Avenue Ohio River 1899 Ohio Street 022 St. Joseph Avenue Ohio River 2299 Broadway Avenue 024 Baker Street Pigeon Creek 1701 Read Street 025 Diamond Avenue Pigeon Creek 99 Diamond Avenue 038 Oak/Riverside Ohio River 499 S. E. Riverside Drive 103 Junction Box Prior to WWTP Head works Ohio River, Bee Slough * 1500 Waterworks Road
* Only when the river is high and flood control pump stations are opened
East Plant West Plant Appendix L Training and Organizational Participants
Training and Utility Organizational Participants
TABLE 1 Training and Utility Organizational Participants
Utility Organizational Areas
and Data
Desk”
ntractors Drivers System
Executive “Night “Night
Co Managers
Laborers Leadmen Operators Coordinator Supervisors Management Truck call - Utility Utility On Dispatch
Training Collection
SORP Overview X 1 X 1 X 1 X 1 X 1 X 1 X 1 X 1 X 3
Dispatch Response X 2 X 2 X 2
SSO / CSS Reporting X 2 X 2 X 2 X 2 X 2
Traffic Control X 2 X 2 X 2 X 2 X 2
Response, Recovery X 2 X 2 X 2 X 2 X 2 and Cleanup
Schedule for Training: 1 Annual 2 Semi-Annual 3 The Utility shall ensure all contractors adhere to SORP processes and procedures
MAY 1, 2017 1