Omaha Combined Sewer Overflow Control Program ... - Omaha CSO

Quarterly Report | 2017 Q4 October–December 2017

Omaha Combined Sewer Overflow Control Program Implementation Phase

CSO Project tours were given after Nebraska Department of Environmental Quality informational meetings on October 23, including the Leavenworth Lift Station (above). Small businesses and general contractors met at the REACH event on November 16 (right).

CONTENTS HIGHLIGHTS . . . . . . . . . ii PROGRAM OVERVIEW . . . . . . . . . . . 1 GOAL REVIEW . . . . . . . . . . . . . . 2

Fourth Quarter Highlights

• Construction continues on the South Interceptor Force Main (SIFM) North

Segment. Substantial completion is expected in January 2018. The force main installation was completed on December 6, 2017. • Bids were opened on December 13 for the Lake James to Fontenelle Park Sewer Separation Project. There were four bids opened and two were less than the engineer’s estimate. Bids will be evaluated and the lowest and best bid will be forwarded on to City Council for construction contract award. • Design work continues on the revised Saddle Creek Retention Treatment Basin. Discussions have begun regarding a contractor industry day to be held this spring as well as a contractor prequalification process prior to the expected construction bid in late fall 2018. These activities are intended to increase competition by making more potential bidders aware of the project. • The bid advertisement date for the Burt-Izard Lift Station is still pending, tentatively planned in early 2018. Contractor outreach activities were held in November that included site visits and discussions to help mitigate risks relating to the replacement of the existing isolation gates. • A consultant team was selected for the design of CSO 119 South Barrel Conversion Project and the contract negotiations are underway. This design work will start in early 2018. • The CSO Annual Report required by the Nebraska Department of Environmental Quality for the period ending September 30 was completed. This report is available on the CSO website, www.OmahaCSO.com. ON THE COVER: (Clockwise from left) Missouri River Water Resource Recovery Facility odor control system fans, part of the new odor control system that use biofilters, which will replace the existing chemical scrubber system; concrete placement in SIFM North Shaft 1 at Heartland of America Park; and John Creighton Boulevard and Miami Sewer Separation completed project, looking west on Corby toward 36th Street.

ii

Omaha Combined Sewer Overflow Control Program | Implementation Phase

PROJECT SPOTLIGHT . . . . . . . . . . 6 BUDGET DETAILS . . . . . . . . . . . . . 9 PROJECTS UNDER CONSTRUCTION . . . . 10 KEY ACTIVITIES . . . . . 12 APPENDIX . . . . . . . . . . A1

For additional information regarding the Omaha CSO Program, please visit www.OmahaCSO.com or call the CSO Program Hotline at 402-341-0235.

A City of Omaha Public Works Initiative

PROGRAM OVERVIEW

PROGRAM MISSION

The Program Management Team’s job is to save money for City ratepayers and do what is best for the community as we meet the objectives and requirements of the Clean Water Act.

Goal 1: Regulatory Compliance. Meet specific regulatory requirements as identified by the Environmental Protection Agency and Nebraska Department of Environmental Quality. • Complete implementation of CSO projects within schedule identified. • Reduce pollutant discharge to the Missouri River and Papillion Creek.

Goal 2: Economic Affordability. Minimize cost impact to ratepayers by completing CSO projects within or under budget.

Program Schedule The Program schedule is shown below. Final implementation is targeted for 2027. Program project types are categorized into two groups: major projects and sewer separation projects. The project implementation approach was selected based on its positive effect on water quality, supporting development, construction sequencing, and cost. Schedules were further coordinated to allow for concurrent construction. A list of projects by Long Term Control Plan phase is located in the Appendix.

CSO Solutions

Goal 3: Community Acceptance. Maintain continuous public dialogue, provide information and pursue opportunities for multiple benefits in CSO projects.

2020

CURRENT CSO PERMIT IS VALID THROUGH OCTOBER 2020

The CSO permit was approved by Nebraska Department of Environmental Quality in September 2015 with refined requirements that lower the City’s costs in support of Omaha’s Program. The permit was modified in June 2017.

www.OmahaCSO.com

Clean Solutions for Omaha Quarterly Report | Fourth Quarter 2017

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Goal 1: Regulatory Compliance Regulatory Compliance includes two items: 1) implement projects within the identified schedule, and 2) reduce pollutant discharge to the Missouri River and Papillion Creek.

SCHEDULE

The following charts show implementation milestones, with a list of project phases located in the Appendix. A significant update to the Program permit recently occurred; the charts below reflect this permit modification. All regulatory milestones have been met to-date.

Phase

Deep Tunnel System/Missouri River Retention Treatment Basin Nearing the completion of the Project Definition Task effort, with the Executive Summary and supporting documents to be completed in first quarter, 2018.

2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027

MAJOR PROJECTS

Missouri River Water Resource Recovery Facility Schedule B2 construction completion nears 75%, and the contractor is on schedule.

Description of Phase

–

Missouri River Water Resource Recovery Facility Improvements

–

South Interceptor Force Main

2

Saddle Creek Basin

4

Deep Tunnel System/Missouri River Retention Treatment Basin, and others Notice to Proceed to Consultant for Final Design

Notice to Proceed to Constructor

Current Status Project Phase

2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027

SEWER SEPARATION PROJECTS

Phase 1 Phase 2 Phase 3

Nearing final completion of the Gilmore Avenue Project, which will complete this phase. CSO 210 Sewer Separation Design request for proposal will be issued in first quarter, 2018 to kick off this phase.

*

10

Study & Design Projects

Phase 4 Phase 5 Phase 6 Phase 7 Commence Bidding

All Construction Projects Complete

25

Bid/Construction/ Complete Projects

26

Future Projects

*As part of adaptive management, 38 Long Term Control Plan projects have been removed, combined, or pooled; this includes 13 that were eliminated due to the change in the

2

Minne Lusa permit modification in June 2017.

Omaha Combined Sewer Overflow Control Program | Implementation Phase

PROGRAM OVERVIEW: GOAL 1

STATISTICS

61

Estimated Program Construction Costs, through December 2017,**

Deliver ed

*

gh rou th

Long Term Control Plan projects

has been paid out for construction activities.

$120M Construction

80

value of projects in bid or current construction

Construction Packages Multiple packages provide more opportunities for local contractors and efficient delivery.

$195M

$287M

Construction value Construction value of projects completed (construction dollars paid out) of projects in design ** E xcludes RNC projects and continues to include Minne Lusa Basin funding for individual projects that will be identified after the re-evaluation.

100 90

Completion of Deep Tunnel System Projects

CSO Bacteria Loading Reduction (%)

80

Completion of Saddle Creek RTB Project and sewer separation

CSO Load Reduction

70

12/31/2017 Completion of Riverview Lift Station and sewer separation projects

60 Completion of Phase One Major Projects and sewer separation

50

REGULATORY COMPLIANCE

Completion of Leavenworth Lift Station and some MRWRRF upgrades

40 30

Completion of SOIA Projects and sewer separation

20

www.OmahaCSO.com

2028

2027

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

0

2002

10

The graph (at left) indicates the estimated reduction of bacterial loading in CSOs as projects are completed. This chart is from the Annual Report, which was submitted on December 28, 2017 to the Nebraska Department of Environmental Quality.

Clean Solutions for Omaha Quarterly Report | Fourth Quarter 2017

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PROGRAM OVERVIEW: GOAL 2

Goal 2: Economic Affordability

Economic Affordability is the minimization of the cost impact to the ratepayers. Construction costs have been contained as shown in the following metrics.

RIVERVIEW LIFT STATION VALUE ENGINEERING The Riverview Lift Station Replacement project underwent a Value Engineering (VE) effort to review and evaluate construction costs to identify savings. The project also had a VE effort at the 30% design submittal. The VE effort identified over $1 million of construction costs savings at 30% and an additional $1 million of construction cost savings at 60%. All projects have cost and VE reviews at specific stages in the project design and these will continue for this project to provide the best project for the cost, while achieving the stated project goals.

Budget Amount

Bid Award

CONSTRUCTION BID AWARD COMPARISON

The figures show that the CSO Program Construction Project Bid Awards, of sewer separation projects in construction, are about 10% below the initial 2009 Program budget amount, indicating potential cost savings to the Program in each projects’ initial construction costs.

RATEPAYER ASSISTANCE

When the Long Term Control Plan was approved, it marked the start of a ratepayer assistance plan to help low income and fixed income households with sewer rate increases necessary to fund the Program. Ratepayers are eligible if they receive Low Income Heat and Energy Assistance (LIHEAP) from their utility. This has kept administrative costs to a minimum and provided the maximum benefit to those who need it. For assistance or to apply for Nebraska LIHEAP, call 800-383-4278.

4

From January through December 2017, over $

1,687,383

has been provided in assistance; for a total of

7,144,244

$

from inception (May 2011) through December 2017.

Omaha Combined Sewer Overflow Control Program | Implementation Phase

PROGRAM OVERVIEW: GOAL 3

Goal 3: Community Acceptance Community Acceptance provides continuous open dialogue with the public along with timely and accurate project information. The Program is also providing additional neighborhood benefits, beyond the improved sewer system and water quality enhancements.

PUBLIC ENGAGEMENT OPPORTUNITIES The CSO Program provides opportunities for the public to engage with project teams during key stages of design and construction. The public is typically engaged for the: • Project design kick-off meeting • Project 30% design informational meeting with surrounding neighborhood associations • Project 60–80% design open house • Engagement of neighborhood champion(s) for neighborhood enhancements when appropriate • Project pre-construction meeting In addition, the CSO Program is partnering with the Omaha Chamber’s REACH Program, to inform potential bidders and small business of subcontracting opportunities on CSO construction projects. During the bid period for the Lake James to Fontenelle Sewer Separation project, an outreach meeting was held on November 16 by the City, Program Management Team, and REACH.

ADDITIONAL PUBLIC BENEFITS

In addition to the over 56,000 feet of sewer pipe constructed and/or rehabilitated, Program projects allowed for the reconstruction of adjacent infrastructure. This provided a total community benefit value of over $38 million, as identified below.

374

equivalent blocks of replaced street

763

impacted driveway approaches replaced

452

76

acres of enhanced park/ open space

1,040

ADA compliant curb ramps constructed

equivalent blocks of replaced sidewalk

7,043 linear feet of new trails

136,000

1,887

linear feet of upgraded gas and water utility infrastructure

new trees

Includes 23 completed or underway projects as of second quarter, 2017, since the inception of the Program.

www.OmahaCSO.com

Clean Solutions for Omaha Quarterly Report | Fourth Quarter 2017

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South Interceptor Force Main Project

North Segment Construction

View of excavated tunnel as it is being constructed between Marcy Street and Heartland of America Park.

The existing South Interceptor Force Main (SIFM) was constructed in the early 1960s and has remained in continuous operation for more than 50 years. Its current condition makes it unreliable for continued long term use and replacement is necessary to convey increased dry and wet weather flows to the Missouri River Water Resource Recovery Facility (MRWRRF). The new SIFM under construction will provide greater reliability and maximize flow capacity for conveyance to the new MRWRRF headworks.

6

Construction of South and Central Segments began in January 2014 and were complete in November 2015. Construction of the North Segment started in January 2015 and consists of approximately 4,500 feet of 48-inch pipe. It begins near Lewis and Clark Landing, south of I-480, and continues south to Pierce Street. A significant portion of the alignment, approximately 3,500 feet, is being constructed in bedrock nearly 80 feet beneath Heartland of America Park, the ConAgra campus, and the Breakers Building.

Omaha Combined Sewer Overflow Control Program | Implementation Phase

PROJECT SPOTLIGHT A tunnel boring machine (TBM) was used to bore through bedrock and construct a tunnel for the new force main of the North Segment. In 2016, the TBM encountered an unexpected geologic anomaly consisting of an area of sand, boulders, and groundwater instead of bedrock. The TBM was not equipped to handle this material and was unable to proceed and finish tunnel boring. Additionally, this anomaly threatened to flood the tunnel with water, endangering workers.

After evaluating many options to complete tunnel construction, use of a micro-tunnel boring machine was selected to mine gravel and boulders and complete the remaining 900 feet of tunneling. In July 2017, workers built a rescue shaft for the original TBM, just beyond where it became stuck in Heartland of America Park. The micro-tunnel boring machine completed tunnel excavation in August 2017. Both the TBM and microtunnel boring machine were removed from the project

South Interceptor Force Main extending from the newer surface into the tunnel. Cross section schematic of the tunnel. UPRR Crossing

Rescue Shaft Heartland of America Park

ConAgra Campus

Approximate Top of Bedrock 900’

Rock Tunnel 1,924’

The Breakers Building

Tunnel Shaft #3 Leavenworth Lift Station

Tunnel Shaft #2

80’

Tunnel Shaft #1

25’

Lewis & Clark Landing

731’

(Continued on page 8.)

www.OmahaCSO.com

Clean Solutions for Omaha Quarterly Report | Fourth Quarter 2017

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(Clockwise from top left) North tunnel shaft in Heartland of America Park; completed connection of the force main through the rescue shaft; old TBM breaking into the rescue shaft.

site and pipe is being installed through the tunnel. By January 2018 the project will be substantially complete and the new SIFM will pump sewage to the City’s MRWRRF. This project allows Omaha to reduce the volume of sewage that is released into the Missouri River as part of CSOs, advancing the City toward meeting

8

federal mandates. Restoration of Heartland of America Park will be complete by spring 2018. Removal of the TBM ended a 14-month construction delay and safely solved a series of engineering challenges.

Omaha Combined Sewer Overflow Control Program | Implementation Phase

BUDGET DETAILS The Combined Sewer Overflow (CSO) Program is maintaining overall schedule and budget to meet current regulatory and financial expectations.

Regulatory Progress PROGRAM BUDGET STATUS In 2015 dollars

2009

2027

2.304 B $ 2.171 B $

expected funding

includes dollars from sewer rates, outside grants, and other sources

$580.2M actual cost

Estimated Complete:

Spent to Date:

While there is still much work to be done, a significant amount of progress has been made toward Program implementation and the Program continues to meet all regulatory milestones.

CSO Program Elements: Program Management:

Management and administration of Programrelated activities

Sewer Separation:

PROGRAM CAPITAL ALLOCATION $1.1 B

Sewer projects that will reduce flows to the combined sewer system Facilities

Conveyance1:

South Interceptor Force Main (SIFM) Minne Lusa Stormwater Sewer

$1 B $900 M

Facilities1:

$800 M

Deep tunnel, Missouri River Water Resource Recovery Facility (MRWRRF), high rate treatment, lift station, and storage structure projects

Sewer Separation

$700 M $600 M

Miscellaneous:

$500 M

Miscellaneous study-related projects

Conveyance

1

$400 M $300 M $200 M $100 M

Program Mgmt.

$51.6 M

$0 Actual Cost

www.OmahaCSO.com

$229.2 M

$192.5 M

T he combination of conveyance and facilities constitutes most of the major projects.

Misc. Projects

$99.8 M $7.1 M Total Capital Cost (2015 Dollars)

Clean Solutions for Omaha Quarterly Report | Fourth Quarter 2017

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PROJECTS UNDER CONSTRUCTION FIGURE 1

BRIDGE STREET Mi

sso

CC

iR

ive

r

24th St

72nd St

Carter Lake

tD

r

MINNE LUSA

30th St

COLE CREEK

ur

Ab b

ot

Maple St

BURT-IZARD

PAPILLION CREEK NORTH k Cre e le dd Sa

10th St

24th St

42nd St

LEAVENWORTH

Center St

Mis

er Riv

LEGEND Current Projects Completed Projects North Segment

72nd St

CSO Study Basins

SADDLE CREEK 42nd St

TSOUTH INTERCEPTOR

City Council District 1 City Council District 2 City Council District 3

DD

PAPILLION CREEK Q Street SOUTH

City Council District 4

J OHERN/ MONROEZ

Figure 1 and corresponding table to the right identify project details and completed projects. 10

ri sou

Q

Dodge St

L Street

Eppley Airfield

Omaha Combined Sewer Overflow Control Program | Implementation Phase

City Council District 5 City Council District 6 City Council District 7

CURRENT CONSTRUCTION

KEY

J

Q

CONSTRUCTION CONTRACTS

CONSTRUCTION MANAGER’S CURRENT ESTIMATE AT COMPLETION

Missouri River Water Resource Recovery Facility – Schedule B2

South Interceptor Force Main – North Segment

51,220,953

$

73% Complete 32,486,888

$

97% Complete 320,210

Tunneling, pipe installation completed.

$

Spring Lake Park, Landscaping

76% Complete

T Missouri Avenue/ Spring Lake Park Sewer Separation Phase 2

6,513,539

Achieved substantial completion August 22, 2017.

$

0% Complete 10,600,000

Gilmore Avenue Sewer Separation Phase 1 and 2

$

Notice to Proceed November 1, 2017.

98% Complete

Z

315,000

Gilmore Avenue Landscape Improvements

CC

Masonry work on new chemical building completed; exterior painting commencing.

$

72% Complete

Fontenelle Park Lagoon Improvements

7,800,303

$

77% Complete 2,406,536

$

42nd and Q Street Sewer Separation

Work on final punch list items continues. Awaiting spring planting. Park area restoration continues. Notice to Proceed spring 2018.

0% Complete

DD

Hitchcock Park Green Infrastructure

$

425,925

Two-year maintenance period started October 2017.

97% Complete

* Shaded bars indicate the progress toward completion of each project. www.OmahaCSO.com

Clean Solutions for Omaha Quarterly Report | Fourth Quarter 2017

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KEY ACTIVITIES Below is a list of key activities for the current and upcoming quarter. A full list is included in the Appendix.

2017 FOURTH QUARTER KEY ACTIVITIES

Regulatory • Continued discussion with the Nebraska Department of Environmental Quality regarding a revised Consent Order. • On October 23, 2017, the City of Omaha staff, with assistance from Program Management Team, provided an overview of the CSO Program to approximately 19 individuals with the Nebraska Department of Environmental Quality and the Nebraska Department of Health and Human Services. The overview included a presentation on the history of the Omaha collection system, the status of implementation of the CSO Long Term Control Plan, its positive impact on water quality, and an overview of the work being done at several CSO projects sites. A tour of several CSO project sites was conducted after the overview. Program • Coordination efforts continued with Omaha Metro agencies to track upcoming large construction bid opportunities. This benefits all owners by allowing adequate time to prepare bids and encouraging responses from multiple construction companies. • The Technical Assessment for Cost Savings task continued as the Program Management Team is finalizing the draft report, which includes identification of significant Program cost saving measures to be submitted for City review in the first quarter, 2018. • The Deep Tunnel Project Definition effort continued, with expected completion in the first quarter of 2018. Workshops were held with the City to discuss cost, alternative project delivery, construction contract packaging and project risk. • Updates continued with the City rate consultant, Stantec on the financial capability assessment and rate model update. 12

• The Program Risk Management Plan update

commenced this quarter with a kickoff meeting. Workshops are scheduled in first quarter, 2018 to review the Program Risk Registers. Projects • Construction Notice to Proceed for Missouri Avenue/ Spring Lake Park Sewer Separation Phase 2 was given on November 1. This construction project is expected to take approximately two years to complete. • EmNet continued the evaluation of Real Time Controls opportunities on the City’s combined sewer system, which utilizes existing infrastructure. The final report is expected in the first quarter, 2018.

UPCOMING 2018 FIRST QUARTER KEY ACTIVITIES

Regulatory • Hold quarterly meeting with Nebraska Department of Environmental Quality and Environmental Protection Agency to discuss Program progress. Program • Continue to look for ways to save money for the ratepayers while still meeting objectives and requirements of the Clean Water Act. Projects • Bid advertisement for the Burt-Izard Lift Station is expected to be in the first quarter, 2018. • The Monroe Lift Station conceptual design contract is expected to be approved with CDM Smith in first quarter, 2018. • A request for proposals will be issued in the first quarter, 2018 for Papillion Creek North Sewer Separation Project and 18th and Fort Flow Reduction Project. • The CSO 110 South Barrel Conversion Project conceptual design contract is expected to be approved in the first quarter, 2018.

Omaha Combined Sewer Overflow Control Program | Implementation Phase

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Printed February 2018