Ocean Outfall Legislation OverviewRoy Coley, MBADirector, Miami-Dade Water & Sewer Department Program Update Spring 2021

Agenda

• Legislation Overview• WASD Compliance Plan

• Reduction of Ocean Outfall Disposal • Nutrient Diversion• Reuse Program

• Status of Projects

Ocean Outfall Legislation Objectives

WASD’s Compliance InvestmentsProject Status

Completed

Construction

Procurement

Design

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1323

PROJECTS22billion$2.2

Reduction in Ocean Outfall Discharge

• WASD will achieve elimination of 95%+ of Ocean Outfall Discharges by 2025

• This is accomplished via improvements to the Central and North District WWTP’s

• Tertiary Treatment (High Level Disinfection)

• Development of Deep Injection Wells

Diversion of Nutrient Loads from Environment 59,900,000

0

10,000,000

20,000,000

30,000,000

40,000,000

50,000,000

60,000,000

70,000,000

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

Cumulative TN Load Diverted to Injection Wells (lbs)

Required Cum. Diversion Actual Projected

2,900,000

0

1,000,000

2,000,000

3,000,000

4,000,000

5,000,000

6,000,000

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

Cumulative TP Load Diverted to Injection Wells (lbs)

Required Cum. Diversion Actual Projected

• WASD is diverting nutrients by 2025 & ahead of schedule.

• Nitrogen: 59.9 million lbs• Phosphorous: 2.9 million lbs

• To achieve this WASD invested approximately $50 million at CDWWTP

• Maximizing use of existing injection wells at NDWWTP

Reuse Program• Miami-Dade County has partnered with FPL to

construct a 15 million gallon per day Clean Water Recovery Center

• 4th Largest Reuse Facility in the State of Florida

• The facility will treat wastewater for utilization within Turkey Point’s Cooling Towers, allowing for the re-allocation of Floridan Aquifer water supply for environmental purposes

• The project will serve as a cornerstone of Miami-Dade County’s wastewater reuse program given its expandability for an additional 30 MGD

• Program consists of all technically, environmentally, and economically feasible reuse

North District Wastewater Treatment Plant Improvements

Projects:

• Municipal deep injection well system

• Site preparation and mitigation of impact to wetlands

• Conversion of the existing Outfall Pump Station to a Transfer/Outfall Pump Station

• High-Level Disinfection Facilities• Electrical Distribution Building

Total Investment of $436 MCompletion Date: Dec. 2025

Central District Wastewater Treatment Plant Improvements

Projects:• Municipal deep injection well system• Industrial deep injection well system• Conversion of the existing Outfall

Pump Station to a Transfer/Outfall Pump Station• High-level Disinfection Facilities (Disk Filters, Chlorine Contact Tank)• Improve the existing stormwater system• One oxygenation train and three secondary clarifiers

• New Electrical Distribution Buildings

Total Investment: $1,157MCompletion Date: Dec. 2025

South District Wastewater Treatment Plant Improvements

Projects:• Rehabilitation of ox trains including

mechanical mixer replacement

• New Headworks and two new oxygenation trains

• New secondary clarifier; RAS Pump Station 3 improvements; New Filter Train

• New chlorine contact tank; new 72-inch well loop interconnect

• New Electrical Distribution Building with new back-up engine-generators

• Three municipal injection wells

Total Investment: $656MCompletion Date: Dec. 2025

On-Going Construction

Thank You

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Broward County’s Ocean Outfall Law Update

Kevin Carter, Broward County Water and Wastewater Services kcarter@broward.org

954-831-0718

South Florida Regional Planning Council Monthly MeetingJune 28, 2021

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o Broward County provides both drinking water and wastewater services in different areas of the county.

o NRWWTP opened in 1975 and assisted by United States Environmental Protection Agency’s wastewater plant regionalization efforts (Federal Clean Water Act’s Construction Grants Program).

o Now provides wastewater service to over 600,000 people in Broward County’s northern region via retail and 11 large users systems.

o Current effluent practices are ocean outfall discharge, deep well injection, and water reuse.

Broward County’s North Regional Wastewater Treatment Plant (NRWWTP) Overview

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Solving the Ocean Outfall Legislation Challenge: A Purple Pipe Partnership is Born

o Per Ocean Outfall Law’s 60% water reuse requirement, Broward County needed to increase production to 26 million gallons per day (MGD) capacity from current 10 MGD: Initial cost estimates were over $500 million.

o Palm Beach County needed alternative water supply for irrigation purposes in county’s populated southwest area. Provide regional conservation of Biscayne Aquifer.

o Partnership implemented through an interlocal agreement approved by both Counties in 2016. NRWWTP water reuse improvements: $62 million Broward County water reuse pipelines: $33 million Broward County pays Palm Beach County’s water reuse system

construction costs but repaid over time: estimated $44 million

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o 42-inch diameter pipe from NRWWTP to Hillsboro Canal (yellow).

o 24-inch diameter pipe westward to North Springs Improvement District (NSID, purple).

o Will provide up to 10.5 million gallons per day (MGD) to Palm Beach County and up to 3.5 MGD to NSID.

Broward County Water Reuse Transmission Main Pipeline Project

24”

Sawgrass Expressway

Sample Road

Hillsboro Blvd.

FL T

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Hillsboro Canal

Palm Beach County

Broward County

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Scenes from the Broward County Water Reuse Transmission Main Pipeline Project

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Future Palm Beach County Water Reuse System

o 5 sequences will allow water reuse delivery to areas with need.

o Golf course and residential irrigation will be primary use.

o A two-connection system between the two counties replaced the original one connection plan:

Increased flexibility and redundancy = Strengthened resiliency

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Some Key Milestones and Looking Forward

o Broward County’s NRWWTP water reuse improvements and pipelines construction scheduled for 2021 completion. 26 million gallons per day water reuse among top facilities in state.*

o Many thanks to the Florida Department of Environment Protection and the South Florida Water Management District for a $3 million alternative water supply grant for pipelines construction.

o Palm Beach County water reuse system design and construction to occur over the next few years for water reuse delivery from Broward County.

o Many thanks to the Florida Department of Economic Opportunity and U.S.Department of Housing and Urban Development for a $6.25 million grant for Broward County’s $12.5 million ‘Regional Effluent and Reuse Solutions’ project.

* https://floridadep.gov/water/domestic-wastewater/content/reuse-inventory-database-and-annual-report

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Conversations lead to solutions, let’s talk

Questions/Discussion Time

Kevin CarterBroward County Water and Wastewater Services

kcarter@broward.org954-831-0718

Vivek Galav, P.E.Director, City of Hollywood Public Utilities

South Florida Regional Planning Council Monthly Meeting

June 28, 2001

Ocean Outfall Compliance UpdateCity of Hollywood Compliance

Requirements and Progress

Department of Public Utilities

Agenda

Hollywood’s Service Area and History of Outfall Use

City’s Unique Considerations and Approaches

Outfall Transition Progress, Remaining Work, Benefits and Cost

2

Department of Public Utilities

Wastewater, Reuse and Water Infrastructure

Southern Regional Wastewater Treatment Plant (SRWWTP) – Outfall capacity – 46.3 mgd– AADF – 38 mgd– Outfall in service since 1968– Deep wells in service - 2003

Reuse system – Permit capacity - 4 mgd– AADF – 2.7 mgd– Treats reuse water from Davie

and Cooper City Water System Demand

– Hollywood – 16 mgd– Broward – 6 mgd

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UNIQUE COMPLIANCE CONSIDERATIONS

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Department of Public Utilities

Infiltration of brackish groundwater renders the effluent too salty for typical reuse applications

• Infiltrated brackish groundwater renders effluent unsuitable for irrigation

• Seasonal tidal flooding exacerbates brackish water impacts

• Coastal utilities (Hollywood, Dania Beach, Hallandale Beach) contribute brackish groundwater

Department of Public Utilities

Hollywood’s Unique Compliance Challenges The quality of the effluent is incompatible with most conventional reuse

applications – desalination required

Required reuse exceeds the City’s total water demand and is more than double the estimated total outdoor water use

The City has aggressively implemented other measures that cost effectively provide equivalent benefit, thereby reducing demand for reclaimed water

Most constraints are unique to the City and present hurdles that render exclusive reuse infeasible

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Department of Public Utilities

Ocean Outfall Legislation Compliance Approach

• FDEP approved approach adapted to Hollywood’s unique challenges (over $300 mil cost savings)

• Key elements of compliance approach

1. Reuse – 10 million gallons per day (mgd) totala) 4 mgd for in-process recycling (fully satisfied)b) 4.5 mgd to be contracted with other utilities (partially

satisfied)c) 1.5 mgd expansion of existing reuse in Hollywood (ongoing)

…….Continued7

Department of Public Utilities

Ocean Outfall Legislation Compliance Approach

• Key elements of compliance approach (Continued..)

2. Reduced nutrient discharge to oceana) Actual nutrients discharged limited to 36% of amount

allowed

3. Reduce discharges by 2025 (except peak wet weather flows) a) OOL requires 95% reductionb) Hollywood’s target is 99% reduction

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OUTFALL TRANSITION PROGRESS, REMAINING WORK, BENEFITS AND COST

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Department of Public Utilities

Status and Cost of Major Compliance Program Elements

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The City is on track to satisfy its requirements ahead of schedule

1. Compliance Elements – Reuse

A. Contracted Reuse (4.5 mgd) Satisfied 2.0 mgd Unsatisfied commitment 2.5 mgd

B. Actual Reuse (1.5 mgd) Effluent supply expansion Transmission expansion

….Continued

Department of Public Utilities

Status and Cost of Major Compliance Program Elements

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The City is on track to satisfy its requirements ahead of schedule

2. Compliance Elements – Effluent Disposal

A. Injection Well (IW) Capacity ExpansionConstruction completed - Fall 2021 (approx. $40 million)

B. IW Pump Station Expansion• Design nearing 100% completion (Est. $93 million)• Bid Advertisement - Fall 2021

Department of Public Utilities 12

Thank You