Copyright © 2009 Central Valley Clean Water Association and the Bay Area Clean Water Agencies Contents Best Management Practices (BMPs) for Sanitary Sewer Overflow (SSO) Reduction Strategies INTRODUCTION…………………………………………………………………I-1 SECTION 1 FAILURE ANALYSIS AND CORRECTIVE MEASURES............................................ 1-1 SECTION 2 PRE-OWNERSHIP ................................................................................................. 2-1 SECTION 3 SEWER CLEANING, AND ROOT CONTROL.......................................................... 3-1 SECTION 4 CCTV OPERATION AND MAINTENANCE ........................................................... 4-1 SECTION 5 TRAINING AND COMPETENCY ASSESSMENT OF PERSONNEL............................. 5-1 SECTION 6 LEGAL AUTHORITY AND ENFORCEMENT ........................................................... 6-1 SECTION 7 CONDITION ASSESSMENT, LIFE-CYCLE COSTS,AND CAPITAL IMPROVEMENT PROGRAM .................................................................................. 7-1 SECTION 8 SERVICE LATERALS............................................................................................. 8-1 SECTION 9 INFILTRATION AND INFLOW................................................................................ 9-1 SECTION 10 FATS, OILS, AND GREASE (FOG) CONTROL .................................................... 10-1 SECTION 11 PRESSURE SYSTEMS .......................................................................................... 11-1 SECTION 12 SSO EMERGENCY RESPONSE............................................................................ 12-1 SECTION 13 POST SSO – OVERFLOW EMERGENCY RESPONSE .......................................... 13-1 SECTION 14 SYSTEM EVALUATION AND CAPACITY ASSURANCE......................................... 14-1 SECTION 15 COMMUNICATIONS ........................................................................................... 15-1 SECTION 16 RECORD KEEPING ............................................................................................. 16-1 BACWA / CVCWA i SSO Reduction Strategies Best Management Practices (BMPs) for Sanitary Sewer Overflow (SSO) List of Acronyms AAR After Action Reviews ABS Acrylonritile Butadiene Styrene, that black plastic pipe plumbers use. AMWA Association of Metropolitan Water Agencies APWA American Public Works Association ASCE American Society of Civil Engineers BACWA Bay Area Clean Water Agencies BMP Best Management Practice BOD Biochemical Oxygen Demand CAD Computer-Aided Design CCI Construction Cost Index CCSCBG California Collection System Collaborative Benchmarking Group CCTV Closed-Circuit Television CCW Counterclockwise CDO Cease and Desist Order CIP Capital Improvements Program CIWQS California Integrated Water Quality System CMMS Computerized Maintenance Management System CSU California State University CVCWA Central Valley Clean Water Agencies CW Clockwise CWEA California Water Environmental Association CY Calendar Year DWQ Department of Water Quality (of the State Water Resources Control Board) ENR Engineering News Record ES Executive Summary FOG Fats, Oils, and Grease FSE Food Service Establishments GIS Geographic Information System GSC Grease Source Control GWDR Statewide General WDR for Wastewater Collection Agencies GWI Groundwater Infiltration I&C Instrumentation and Controls I/I Infiltration and Inflow IICRC Institute of Inspection, Cleaning and Restoration Certification ISTT International Society of Trenchless Technology LS Lift Station LS PM Lift Station (and Force main) Preventative Maintenance MOP Manual of Practice MUD Municipal Utility District NACWA National Association of Clean Water Agencies NASSCO National Association of Sewer Service Companies NASTT North American Society of Trenchless Technology BACWA / CVCWA ii SSO Reduction Strategies NGO Non-Government Organization NOV Notice of Violation O&M Operations & Maintenance OJT On-The-Job Training OSHA Occupational Safety and Health Administration PACP Pipeline Assessment and Certification Program (Part of NASSCO) PLCO Property Line Clean-Out PM Preventive Maintenance POTW Publicly Owned Treatment Works PVC Polyvinyl Chloride PW Public Works PWMW Public Works Maintenance Worker QA/QC Quality Assurance/Quality Control R/R Rehabilitation/Replacement RDI/I or Rain-Dependent Infiltration and Inflow RDII RQWCB Regional Water Quality Control Board RTU Remote Terminal Unit SASD Sacramento Area Sewer District SCADA Supervisory Control and Data Acquisition SECAP System Evaluation and Capacity Assurance Plan SOP Standard Operating Procedure SSMP Sewer System Management Plan SSO Sanitary Sewer Overflow SSO WDR Statewide General WDR for Wastewater Collection Agencies SSORS Sanitary Sewer Overflow Reduction Strategies SWRCB State Water Resources Control Board TVI Television Inspection UBC Uniform Building Code UD Utility District UPC Uniform Plumbing Code USA Underground Service Alert (Dig Alert) USEPA United States Environmental Protection Agency VCP Vitrified Clay Pipe WDR Waste Discharge Requirements WEF Water Environment Federation WPCF Water Pollution Control Federation (previous name of WEF) WWTP Wastewater Treatment Plant BACWA / CVCWA iii SSO Reduction Strategies Glossary of Terms on State Water Resources Control Board Website April 14, 2009 Collection System – Generic term for any system of pipes or sewer lines used to convey wastewater to a treatment facility. Drainage Channel – For the purposes of complying with the Statewide Sanitary Sewer Order, (1) a man-made canal used to transport storm water as part of a municipal separate storm sewer system, or (2) an intermittent or perennial stream bed. Enrollee – A public entity that owns or operates a sanitary sewer system and has submitted a complete and approved application for coverage under Statewide General Waste Discharge Requirements for Sanitary Sewer Systems (WQO No. 2006-0003- DWQ) Event ID – A unique identifier assigned by the SSO database to each reported SSO or private lateral sewage discharge. Integrated Root Control – A collection of practices for dealing with root intrusion. This approach t root control stresses the application of biological, mechanical, and cultural root control techniques. Chemicals are used only when necessary to achieve acceptable levels of control with the least possible harm to non-target organisms and the environment. Lateral – Segment of pipe which connects a home or building to a sewer main, which is usually located beneath a street or easement. The responsibility for maintaining a lateral can be solely that of the sewerage agency or private property owner; or it can be shared between the two parties. Local communities dictate lateral responsibility and the basis for a shared arrangement, if it applies. Lower Lateral – Portion of a lateral (usually from the property line to the sewer main) that the sewerage agency is responsible for maintaining. This term only applies if overall lateral maintenance responsibility is shared with the private property owner. Miles of Gravity Sewer – Amount of gravity sewer lines/pipes in an Enrollee’s sanitary sewer system, expressed in miles. Miles of Laterals – Amount of laterals in an Enrollee’s sanitary sewer system, which the Enrollee is responsible for maintaining, expressed in miles. Miles of Pressure Sewer– Amount of pressurized sewer lines/pipes in an Enrollee’s sanitary sewer system, expressed in miles. Miles of Private Laterals – Amount of private laterals tributary to an Enrollee’s sanitary sewer system, which private property owners are responsible for maintaining, expressed in miles. BACWA / CVCWA iv SSO Reduction Strategies Percent Reached Surface Water – Volume of sewage discharged from a sanitary sewer system or private lateral or collection system that reached surface water divided by the total volume of sewage discharged. Percent Recovered – Volume of sewage discharged that was captured and returned to the sanitary sewer system or private lateral or collection system divided by the total volume of sewage discharged. Private Lateral – Privately owned lateral. Private Lateral Sewage Discharge (PLSD) – Sewage discharges that are caused by blockages or other problems within privately owned laterals or collection systems which are tributary to the reporting Enrollee’s sanitary sewer system. Reports of these events are submitted by Enrollees on a voluntary basis but are not their responsibility. This type of sewage discharge is the responsibility of the private lateral or collection system owner. Sanitary Sewer Overflow (SSO) – Any overflow, spill, release, discharge or diversion of untreated or partially treated wastewater from a sanitary sewer system. SSOs include: i. Overflows or releases of untreated or partially treated wastewater that reach waters of the United States; ii. Overflows or releases of untreated or partially treated wastewater that do not reach waters of the United States ; and iii. Wastewater backups into buildings and on private property that are caused by blockages or flow conditions within the publicly owned portion of a sanitary sewer system. Sanitary Sewer System – Any system of pipes, pump stations, sewer lines, or other conveyances, upstream of a wastewater treatment plant head works and which is comprised of more than one mile of pipes and sewer lines, used to collect and convey wastewater to a publicly owned treatment facility. Spill – Generic term referring to any sewage discharge (i.e., SSO or private lateral sewage discharge) resulting from a failure in a sanitary sewer system