Construction Today - October/November 2011 - (Page 148)

Civil | MWH CONSTRUCTORS INC. – CITY OF TALLAHASSEE ADVANCED WASTEWATER TREATMENT PROGRAM m, www.mwhg • Project cost: $230 mi • Location: Tallahassee, Fllion • Scope: Utility upgrades la. manager of underground utilities MWH Constructors Inc. City of Tallahassee Advan– Wastewater Treatment Pro ced gram The city of Tallahassee, Fla., took big steps to reduce its impact on local water sources. « “I am proud that the city stepped up.” –Jim Oskowis, assista nt general Stepping Up Its Efforts I TALLAHASSEE, FLA., UNDERTOOK ITS LARGEST CAPITAL PROJECT TO PROTECT ITS WATER. BY STACI DAVIDSON n recent years, Tallahassee, Fla., has received the All-American City Award from the National Civic League, has been recognized as a Tree Line USA city by the National Arbor Day Foundation, awarded the Best in America Parks in Recreation by the National Recreation and Park Association, and ranked as a top college town by Kiplinger’s Personal Finance. With a strong reputation to uphold, Tallahassee strives to ensure a high quality of life for its residents. At this time, a major part of that goal is improving its treatment of wastewater. Since 2008, the city of Tallahassee has been working to improve its Advanced Wastewater Treatment (AWT) systems at the Thomas P. Smith (TPS) Wastewater Reclamation Facility, which is a $230 million undertaking that is scheduled for completion in 2015. MWH Constructors Inc. of Colorado is providing construction management at-risk services, which include preconstruction, construction of new facilities, upgrades to existing facilities, commissioning and start up. The goal is for the new and upgraded facilities to produce a high-quality effluent with enhanced nutrient removal to further protect and preserve the region’s valuable resources. “We are constructing mostly new facilities and upgrading some facilities to reduce the nitrogen in treated wastewater and meet the state’s limits,” explains Jim Oskowis, assistant general manager of underground utilities for the city of Tallahassee. “This water is used to irrigate crops that are used for animal feed. “As it’s set up now, some of the water gets into the Floridan Aquifer, which discharges into the Wakulla Springs, one of the world’s largest freshwater springs,” he adds. “Due to excessive nutrient loads in the water that is discharged, the spring has excessive aquatic vegetation growth – it used to be clear. Our goal is to reduce our nitrogen levels by 80 percent, so every drop of water produced by this plant can be used for public access to water lawns and golf courses.” MWH and the city also are building a new facility to treat solids and turn them into Class AA biosolids, which can be recycled and turned into fertilizer. “We will sell that in bulk to golf courses, nurseries and farms,” Oskowis says. “We want to be able to recycle 100 percent of our wastewater and wastewater solids.” Meeting Milestones Per the terms of the state permit for the AWT project, Tallahassee and MWH had to reach certain milestones – construction milestones and milestones in the city’s nitrogen-reduction efforts. “We had to reduce our nitrogen levels as we went along, which makes the work more complex,” Oskowis says. At this time, MWH and the city are ahead of schedule on both fronts. In fact, in June, the city recorded a record low level of nitrogen in effluent from the TPS facility – just 3.49 milligrams/liter (m/L). The city’s 148 CONSTRUCTION-TODAY.COM OCTOBER/NOVEMBER 2011 http://www.CONSTRUCTION-TODAY.COM

Table of Contents for the Digital Edition of Construction Today - October/November 2011

Construction Today - October/November 2011
Energy Efficiency
Green Building
Executive Perspective
Best Practices
Bernards Construction – El Capitan High School
Bogner Construction Co. – College of Wooster Scot Center
Jean McClung Middle School
Hellas Sports Construction
The Walsh Group – NOAA Pacific Regional Headquarters
Haskell Co. – Scripps Proton Therapy Center
Robert A. Bothman Inc. – Stockton Unified School District
JE Dunn – Energy Systems Integration Facility
Rosendin Electric – AVUHSD Solar Project
Ratcliff Construction Company – Crossroads Church
University of Texas Southwestern Medical Center
Flintco Pacific – Calaveras County Adult Detention Facility
Lee Lewis Construction – Angelo State University’s Plaza Verde Student Housing
Manhattan Construction – First Baptist Church of Dallas
Market & Johnson – Eau Claire County Courthouse project
McTech Corp – 97th Military Police Battalion Headquarters
Parkland Health & Hospital System
RBC Construction
Central Building and Preservation – Randolph Tower City Apartments
Scaparotti Construction Group
Trinity Properties – Trinity Place
Advanced Real Estate Services
Lawrence B. Wohl Inc./Wohl Diversified Services
TN Ward and Commercial Interiors – Maryland Live
ASX Construction – Parc Lafayette
Bayland Buildings Inc.
Dependable Mechanical Systems
New Dawn Developments
DSLD Homes
Aquilini Development and Construction Inc.
Cobalt Construction – Meta Housing
Lifestyle Communities
Pratt and Associates LLC
Miramonte Homes
MP J.J. Duffy Joint Venture/Pathway Senior Living LLC – Victory Centre Vernon Hills
Woodland Homes
Aecom/Inima Joint Venture – Hialeah, Fla., Water Treatment Plant
MWH Constructors – Austin Water Treatment Plant No. 4
Pepper-Lawson Construction – Missouri City Surface Water Treatment Plant
MWH Constructors – AWT Improvements
Blount Contracting Inc.
Harbor Offshore Services
Cruz Construction Inc.
Humble Construction
Nova-Con Projects Ltd.
Trimen Electric
EllisDon Corp. – Atlantic Region
EllisDon Corp. – St. Joseph's Regional Mental Health Care
Focus Equities
Intercom Services Immobiliers
George Brown College – New Waterfront Campus
Seaside Transportation Services
Last Look

Construction Today - October/November 2011