PEIRCE ISLAND WASTEWATER TREATMENT FACILITY PROJECT CITY COUNCIL WORK SESSION C I T Y O F P O R T S M O U T H W A S T E W A T E R D I V I S I O N
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1 Explore Innovative Solutions Protect our Environment Manage our Resources Preserve our Community C I T Y O F P O R T S M O U T H W A S T E W A T E R D I V I S I O N PEIRCE ISLAND WASTEWATER TREATMENT FACILITY PROJECT CITY COUNCIL WORK SESSION SEPTEMBER 29, 2014
2 SEWER DIVISION ROLE AND RESPONSIBILITY Operate and Maintain Existing Collection and Treatment Systems Comply With Regulatory Requirements Plan for Future Needs Provide Council With Necessary Information to Commit to a Compliance Path That Meets Needs of Today and Future
3 TONIGHT S AGENDA Regulatory Status Design Update Construction Timeline and Impacts Cost and Rate Projections Regional Opportunities Compliance Path and Commitments
4 AT A CROSSROADS Compliance Path Options Stay Course with Peirce Island Project Pursue Aggressively Regional Solution at Pease Regulatory changes and evolving conditions may significantly impact costs and risks with present path
5 EVOLVING CONDITIONS AT CROSSROADS Regulatory Changes Bypass/Blending Cost and Rate Projections Regional Opportunities
6 MANAGING RISK Challenging EPA Interpretations Investing in Water Quality Science W A S T E W A T E R M A S T E R P L A N P R O J E C T
7 LEGAL FRAMEWORK CONSENT DECREE Sept 2009 DES Water Quality Questions WASTEWATER MASTER PLAN June/Nov 2010 PILOTING August 2012 City Council Actions EPA Interpretations BAF SELECTION April 2013 DESIGN July 2013 (Ongoing) PROJECT COMPLETED May 2017 / Nov 2018 W A S T E W A T E R M A S T E R P L A N P R O J E C T
8 REGULATORY INTERSECTIONS DES Antidegredation & Shellfish Challenges EPA Rejects Phased Pease Option CONSENT DECREE Sept 2009 WASTEWATER MASTER PLAN June/Nov 2010 PILOTING August 2012 Council Endorses Peirce Island Option BAF SELECTION April 2013 DESIGN July 2013 (Ongoing) PROJECT COMPLETED May 2017 / Nov 2018 W A S T E W A T E R M A S T E R P L A N P R O J E C T
9 REGULATORY INTERSECTIONS CONSENT DECREE Sept 2009 WASTEWATER MASTER PLAN June/Nov 2010 EPA advises 8 mg/l Total Nitrogen Limit for Peirce Island EPA and City Agree to Design Flows and Loads PILOTING August 2012 BAF SELECTION April 2013 DESIGN July 2013 (Ongoing) Council Selects BAF Schedule Impacted PROJECT COMPLETED May 2017 / Nov 2018 W A S T E W A T E R M A S T E R P L A N P R O J E C T
10 TODAY S REGULATORY INTERSECTION CONSENT DECREE Sept 2009 WASTEWATER MASTER PLAN June/Nov 2010 PILOTING August 2012 Iowa League of Cities BAF SELECTION April 2013 EPA Announces Refusal to follow Iowa Decision DESIGN July 2013 (Ongoing) PROJECT COMPLETED May 2017 / Nov 2018 W A S T E W A T E R M A S T E R P L A N P R O J E C T Council Direction
11 Piscataqua River BYPASS AND BLENDING Mechanic Street PS Physical Peirce Island WWTF Biological Permit Limits BOD: 30 mg/l TSS: 30 mg/l TN: 8 mg/l Wet Weather Bypass
12 River IOWA LEAGUE OF CITIES Iowa League of Cities v. EPA, 711 F.3d 844 (8th Cir. 2013) Decided March 2013 EPA Rejects 2014 IOWA LEAGUE OF CITIES INTERPRETATION Pump Station WWTF Permit Limits BOD: 30 mg/l TSS: 30 mg/l TN: 8 mg/l F A C I L I T Y U P G R A D E
13 River IOWA LEAGUE OF CITIES INTERPRETATION Permit Limits BOD: 30 mg/l TSS: 30 mg/l TN: 8 mg/l Pump Station WWTF EPA INTERPRETATION Pump Station Physical WWTF Biological Permit Limits BOD: 30 mg/l TSS: 30 mg/l TN: 8 mg/l F A C I L I T Y U P G R A D E
14 COMPLIANCE PATH RISKS FOR PEIRCE ISLAND WWTF Bypass Creates Non-compliance With EPA Interpretation of CWA - Bypass/Blending Possible Further Investment in Capital Infrastructure Potenial Outside the Fence Line in Future
15 MANAGING RISK OF BLENDING/BYPASS RULE Participation in Bypass/Blending Legal Challenge up to $25,000 Involves Multiple Communities Direction from Council to Continue Challenge
16 MANAGING OTHER RISKS FOR PEIRCE ISLAND WWTF Supplemental Environmental Projects to Support 18-month CD Extension Participate in Water Quality Modeling Estimated at $41,700 Participate in Annual Water Quality Monitoring
17 TONIGHT S AGENDA Regulatory Status Design Update Construction Timeline and Impacts Cost and Rate Projections Regional Opportunities Compliance Path and Commitments
18 Where Are We Today Final Design Phase 1 to 10% - Completed Final Design Phase 2 to 30% - Completed City Council Input on BAF Height - Completed April 14 and May 19, 2014
19 Where Are We Today Value Engineering Completed Primary Clarifier Project Bid and Award - Complete Final Design Phase 3 to 60% - Mid October 2014 Final Design Phase 3 to 100% - February 2015 Bidding Summer 2015 Construction Primary Clarifier Project Begin Spring 2015 Secondary Treatment Upgrade Begin Sept 2015
20 Value Engineering Value can be increased by either improving the function or reducing the cost Working with ARCADIS Independent Group Experts in Field Critical Evaluation
21 Value Engineering City Goals for Value Engineering Validate Decisions Idea Generation Reduced Capital and/or Life Cycle Costs City Constraints Biological Treatment Process Selected through Pilot Results Numerous Ideas Worthy of Further Consideration Design Modified and Updated Reduced Scope of Work and Optimized Layout Construction Methods to Reduce Traffic
22 Regulatory Driven Upgrades Approximately $65M Consent Decree to Meet Secondary Treatment Standards Upgrade Items (includes Nitrogen removal) Biological Aerated Filter Sludge Improvements Headworks (to Protect BAF) Operations/Lab Building (Maintenance of Operation) All the new work will be constructed while the existing facility is in operation
23 Maintenance Upgrades Approximately $15M Replacement of Aging Equipment (25 to 50 yrs old) Prevent Emergency Replacement of Failed Equipment Maintenance Items Primary Clarifiers Sludge Thickener Grit Building and Tanks (Grit Handling) Existing Sludge Facilities (Storage and Pumps) Disinfection
24 Maintenance Upgrades Primary Clarifiers and Sludge Thickener Project Schedule Bid Awarded to Methuen Construction Equipment Delivery - Winter 2014/2015 Construction Complete - Summer/Fall 2015 Cost - $1.375M
25 W A S T E W A T E R M A S T E R P L A N P R O J E C T
26 Project Cost Estimate Item Opinion of Cost ($M) Construction $65 Engineering $11 Project Contingency $4 Total Project Cost $80
27 TONIGHT S AGENDA Regulatory Status Design Update Construction Timeline and Impacts Cost and Rate Projections Regional Opportunities Compliance Path and Commitments
28 Construction Impacts - Onsite and Offsite Madbury Water Treatment Facility Under Construction
29 Construction Impacts Onsite Three years of construction Demolition of three large buildings Rock Excavation Multiple Concrete Pours Complex phasing of pipeline, electrical and process upgrades Facility will have to remain in service the entire time
30 Construction Site and Staging All construction inside fence Staging, construction trailers, parking and storage of equipment will be around the perimeter and off-site 1.5 acres of temporary staging is necessary Barging was evaluated - not practical or economically feasible
31 Workforce Contractor Workforce Estimate Average day personnel 50 Peak day personnel 75 Does not include delivery personnel, City staff or support personnel
32 Construction Traffic Vehicle Traffic Contractor will be required to adhere to detailed plan for minimizing traffic (busing, carpool, etc.) Typical Work day anticipated to be 7:00 to 3:30 Some weekend and night work necessary Estimated truck traffic Average day up to 55 trucks (5 to 10/hour) Peak day up to 80 trucks (especially during concrete pours)
33 Proposed Traffic and Safety Plan Close Peirce Island Rd at snow storage area year round Close Peirce Island Rd at pool from September to May Temporary fencing from Marcy Street to construction site with defined crosswalks Utilize traffic flaggers and police officers as needed Will Bring Recommendations to Parking, Traffic and Safety Committee
34 Staging Areas and Safety Plan Seasonally Closed Area Area Closed to Public Construction Area Temporary Staging Areas
35 Truck Routes Area of Multiple Private Construction Projects
36 Court Street at Intersection with Washington Street 9 Foot Lane Width
37 Court Street Court Street at Intersection with Washington Street 9 Foot Lane Width
38 TONIGHT S AGENDA Regulatory Status Design Update Construction Timeline and Impacts Cost and Rate Projections Regional Opportunities Compliance Path and Commitments
39 Projected Wastewater Improvements and Rates Projects Totaling $98.4 Million Wastewater Treatment Upgrades Peirce Island - $80.0M (Engineer s Estimate) Pease - $8.65M (FY15 CIP) Pump Station Upgrades - $6.0M (FY15 CIP) Sewer Line Upgrades - $3.75M (FY15 CIP)
40 Rate Model Projections - $62.5M Upgrade Increase Net Position in Anticipation of Future Bonds Begin Bond Payments for PIWWTF Project Utilize Net Position to Avoid Rate Spikes
41 Rate Model Projections - $62.5M Upgrade $900 Projected Annual Sewer Bills $800 $700 $600 $641 $673 $707 $742 $772 $803 $500 $400 Average Portsmouth User 5 Units/Month $300 $200 $100 $0 Current Annual Cost (5 Units/Month of Use)
42 Five Year Rate Projections - $80.0M Upgrade Increase Net Position in Anticipation of Future Bonds 6% 6% 5% 5% Utilize Net Position to Avoid Rate Spikes Begin Bond Payments for PIWWTF Project
43 Five Year Rate Model Projections - $80.0M Upgrade Projected Annual Sewer Bills $900 $800 $700 $600 $641 $673 $713 $756 $794 $833 $500 $400 Average Portsmouth User 5 Units/Month $300 $200 $100 $0 Current Annual Cost (5 Units/Month of Use)
44 TONIGHT S AGENDA Regulatory Status Design Update Construction Timeline and Impacts Cost and Rate Projections Regional Opportunities Compliance Path and Commitments
45 Exeter and Stratham Request for Service at Pease Exeter Pease WWTF Stratham Exeter and Stratham Request to Investigate Pease WWTF Regional Treatment Option (per Exeter letter on January 22, 2014 and subsequent City Council approval to allow City Manager to proceed and report back)
46 Exeter and Stratham Request for Service at Pease Exeter/Stratham would build infrastructure and pipeline to pump wastewater to Pease Exeter/Stratham/Portsmouth would share cost of Pease treatment upgrades based on flow allocations Preliminary Assessments: Wright-Pierce - April 2014 Underwood Engineers - August 2014 Water/Sewer Rate Model utilized to assess various scenarios
47 Exeter and Stratham Request for Service at Pease Regional approach would cost the same for Exeter/Stratham but cost less for them in the long run than owning and operating their own treatment facility Neutral with respect to Rates for Portsmouth due to existing CIP project costs planned for Pease WWTF totaling $8.65M Permitting issues are major hurdle Anti-degradation (DES), shellfish bed impacts (FDA/DES), outfall upgrades to Pease (multiple agencies)
48 Area Communities Wastewater Status Newfields Exeter Stratham Greenland Exeter: Facilities Plan Ongoing Start Construction June 2016 Stratham: Partner with Exeter Newfields: Eventual facility upgrades Greenland: Agreement with Portsmouth No clear funding source yet
49 PORTSMOUTH/EXTER/STRATHAM REGIONAL PEASE OPTION All Wastewater Flow From Portsmouth and Exeter/Stratham to Pease WWTF Portsmouth Regional WWTF at Pease Recommended by Wastewater Master Plan Pros and Cons to This Option
50 BENEFITS OF REGIONAL PEASE OPTION Less Restricted Site One Biological Treatment Facility Instead of Two Sustainable Component Potential (Biosolids, better chance to build to LEED Standard) Ability to Modify if EPA Requirements Change
51 COMPLIANCE PATH RISKS FOR PEASE WWTF Non-compliance with CD Regulatory Hurdles Many Will Require Full Support Not Clearly Defined Costs Staff Resources
52 TONIGHT S AGENDA Regulatory Status Design Update Construction Timeline and Impacts Cost and Rate Projections Regional Opportunities Compliance Path and Commitments
53 COMPLIANCE PATH AND COMMITMENTS Compliance Path Stay Course with Peirce Island WWTF Project Pursue Aggressively Regional WWTF Solution at Pease Commitments Ongoing Investments in Good Science (sampling and modeling), Technical and Engineering Support and Legal Services
54 NEXT STEPS Immediate needs Water Quality Modeling funding Direction from City Council regarding Pease Regional Option Continuing with Bypass/Blending legal challenge Additional Design Input
55 QUESTIONS
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