A Happy Marriage? How Your Friends in Sewer will Save Your Stormwater

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1 A Happy Marriage? How Your Friends in Sewer will Save Your Stormwater Zach Henderson Woodard & Curran Tim Haskell and Phillip Tucker York Sewer District

2 AMERICAS WASTEWATER AND STORMWATER INFRASTRUCTURE GRADE Our nation s wastewater infrastructure is aging and at risk. $298 billion What we need to invest over the next twenty years to keep our wastewater and stormwater drainage systems functioning. This is twice what we currently invest. U.S. public infrastructure spending has fallen to 20 year low of 1.7% GDP. Funding gap expected to by $126 billion by Sewer pipes represent the largest costs. Wastewater treatment facilities only represent 20%. 800,000 miles of public sewer pipes in the U.S. Source: American Society of Civil Engineers

3 New England s Wastewater (and Stormwater) Infrastructure is Old! average AGE of sewer pipes in the US average AGE of sewer pipes in Quincy, MA Average AGE of sewer pipes in Lawrence, MA miles of Portland, ME sewer pipe that is greater than 70 years old

4 Typical Sewer System Issues Aging sewer and drainage system High FOG Users Misunderstood Preventative Maintenance and Capital Improvement Programs Can lead to.

5 Sanitary Sewer Explosions SSOs and Illicit Discharges Unintentional discharges of raw sewage from municipal sanitary sewers Consequences: Public Health & Safety Environmental Contamination Compliance and Financial Challenges: Out of sight, out of mind Remedial Maintenance not that exciting to the Public BIG Problem

6 What are we required to do? Municipal Stormwater Compliance ILLICIT Discharge Six Minimum Control Measures Public Education Public Involvement MS4 Illicit Discharge = Many Detection Sanitary and Elimination Construction Site Runoff Control Sewers Seeping S#*t! Post Construction Stormwater Management Good Housekeeping and Pollution Prevention Detection and Elimination

7 What are Illicit Discharges? EPA says any discharge to a MS4 that is not composed entirely of stormwater Indirect Discharge May come from a variety of sources Failed sanitary sewer collection Hazardous waste spills Illegal Dumping including: grass clippings, leaf litter, pet waste or other solid material dumped into catch basin Direct Connection A non stormwater pipe connected to the drain Sewer line or septic system overflow Washing machine Floor drain

8 Aging Sewer Systems Leak During the past 30 years in greater Boston, through the correction of aging and incorrectly connected sewer systems, over 800,000 gallons per day of untreated wastewater has been removed from Boston Harbor. ~ EPA Region 1

9 Overlap Of Sewer and Drain

10 Integrated Sewer and Stormwater Investigations Understanding System Flows Analytical Sampling Manhole Inspection Pipeline Inspection Targeted Repairs Better Planning Better Prioritization Better Use of Technology

11 York Sewer District Year round population 12,656 (2012 Census) Snowbirds, 30 40% still seasonal Summer weekends 50,000 75,000 Over 90 % residential flows 4,420 sewer accounts 119 Mostly Seasonal Restaurants 1,800 motel/hotel rooms Campground, B&B s, Day Trippers

12 York Sewer District Collection System Original sewers late 1800 s early 1900 s York Village Corporation York Beach Corporation York Harbor Corporation 1947 M&E Study of Sewer System for York Water District Recognized need to protect beaches Challenges of seasonal population Annual population of 3,283 to over 16,000 in summer Recommendations

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14 York Sewer Collection System 2013

15 CMOM What is CMOM? Capacity, Management, Operation & Maintenance of Collection System

16 Sewer System Capacity (Assuring and Maintaining Capacity) Evaluation Testing and Inspection Flow Monitoring Sewer System Testing Sewer System Inspection Sewer System Rehabilitation

17 Management: Manage Your Infrastructure Inventory Condition and Criticality Assessment CMMS Computerized Maintenance Management System Preventative Maintenance Emergency Response Planning Asset Management!!

18 Collection System Operation Budgeting Monitoring Safety Emergency Preparedness and Response Mapping New Construction Pump Stations Confined Space Rescue Training Coordinated with York and Kittery Water York Beach and York Village Fire Departments

19 Collection System Maintenance Planned and Unplanned Maintenance Maintenance Budgeting Sewer Equipment Maintenance Sewer Cleaning! (with CCTV inspection when possible) Parts and Equipment Inventory

20 2012 Maine DEP Certificate of Achievement

21 Inflow & Infiltration

22 Sanitary Sewer Overflow, Manhole Defects, Failing Pipe The Marriage of Sanitary Sewer and Stormwater Manhole to manhole inspection flagged this structure, which was located in a major drainage channel and had a hole in the side. SSO at pump station lead to complete replacement of the station and pipes in drainage basin. CCTV of pipelines in high Inflow and Infiltration area found critical pipe failures and began a program of pipe replacement / rehab in the Short Sands Beach Area.

23 Spot CIPP Repair

24 Deformed Plastic Pipe CIPP Lining

25 Automated Screw Conveyor Replacing Manual Bar Rack

26 Trenchless World Article on UV CIPP

27 UV CIPP Lining

28 HDPE Pipe Bursting

29 Resin CIPP Lining Inverted Method

30 Priority Sewer Rehabilitation Area Expoxy Coated Underground Structures UV CIPP Lining Dig & Replace All Sewer Coordinated with York Water District & York Public Works HDPE Pipe Burst

31 Support Clean Water and Culvert Bonds

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