Page 1 | PC Construction Company CASE STUDY: YELLOW RIVER WATER RECLAMATION FACILITY IMPROVEMENTS Location Lilburn, Georgia Contract Value $238 million Completion Date December 2012 Delivery Method CM at-Risk Owner Gwinnett County Department of Public Utilities Designer Jacobs/JJG/CH2M HILL Awards 2012 Best Project Award, Best Civil Works/Infrastructure, ENR National 2012 Best Project Award, Best Civil Works/Infrastructure, ENR Southeast Region Awards continued on next page. Challenge Gwinnett County was faced with the need to update and expand the Yellow River Water Reclamation Facility (WRF) while maintaining treatment capacity and full plant operations, and limiting disruption to the surrounding community. Due to the geography surrounding the facility, a traditional expansion was out of the question. Solution Acting as construction manager-at-risk, the PC Construction team formulated a plan to open a corridor through the middle of the existing plant that enabled the construction of much of the new plant’s systems while minimizing impacts to the surrounding community. This also allowed the plant to remain operational at the necessary capacity and in compliance with all permitting requirements. Gwinnett County was concerned the construction activities at the plant would be overly disruptive to the surrounding residential community. As a result, PC Construction, in partnership with the design engineers, initiated a “Good Neighbor” policy to ensure the expansion brought improvements for homeowners in the immediate vicinity. Odor control, stronger noise abatement and reduced lighting around the site helped minimize the concerns of area residents. In addition, PC Construction sought out methods to limit possible neighborhood disruptions. A policy was created to limit the occurrence of major work to between the hours of 7:00 a.m. and 5:00 p.m. Sound abatement technologies were used whenever reasonably possible to prevent excessive construction-related noises from reaching the community.

CASE STUDY - PC ConstructionCASE STUDY: YELLOW RIVER WATER RECLAMATION FACILITY IMPROVEMENTS Awards (continued) 2012 Project Achievement Award, Construction Management Association

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Page 1 | PC Construction Company

C A S E ST U DY: Y E L LO W R I V E R WAT E R R EC L A M AT I O N FA C I L I T Y I M P R O V E M E N T S

LocationLilburn, Georgia

Contract Value$238 million

Completion DateDecember 2012

Delivery MethodCM at-Risk

OwnerGwinnett County Department of Public Utilities

DesignerJacobs/JJG/CH2M HILL

Awards2012 Best Project Award, Best Civil Works/Infrastructure, ENR National

2012 Best Project Award, Best Civil Works/Infrastructure, ENR Southeast Region

Awards continued on next page.

ChallengeGwinnett County was faced with the need to update and expand the Yellow River Water Reclamation Facility (WRF) while maintaining treatment capacity and full plant operations, and limiting disruption to the surrounding community. Due to the geography surrounding the facility, a traditional expansion was out of the question.

SolutionActing as construction manager-at-risk, the PC Construction team formulated a plan to open a corridor through the middle of the existing plant that enabled the construction of much of the new plant’s systems while minimizing impacts to the surrounding community. This also allowed the plant to remain operational at the necessary capacity and in compliance with all permitting requirements.

Gwinnett County was concerned the construction activities at the plant would be overly disruptive to the surrounding residential community. As a result, PC Construction, in partnership with the design engineers, initiated a “Good Neighbor” policy to ensure the expansion brought improvements for homeowners in the immediate vicinity. Odor control, stronger noise abatement and reduced lighting around the site helped minimize the concerns of area residents. In addition, PC Construction sought out methods to limit possible neighborhood disruptions. A policy was created to limit the occurrence of major work to between the hours of 7:00 a.m. and 5:00 p.m. Sound abatement technologies were used whenever reasonably possible to prevent excessive construction-related noises from reaching the community.

Page 2 | PC Construction Company

C A S E ST U DY: Y E L LO W R I V E R WAT E R R EC L A M AT I O N FA C I L I T Y I M P R O V E M E N T S

Awards (continued)

2012 Project Achievement Award, Construction Management Association of America

2011 Top Water and Wastewater Project Water and Wastes Digest

2011 Georgia Outstanding Civil Engineering Achievement Award, American Society of Civil Engineers

2009 Safety Project of the Year

ResultsThe Yellow River WRF was completed seven months ahead of schedule and more than $10 million under the $250 million budget. The new facility consolidates six other wastewater treatment plants across Gwinnett County into one. At the same time, installation of improved technology – including the largest membrane filtration system – reduced the nutrient levels flowing into the Yellow River basin while requiring much less space than traditional processes.

The “Good Neighbor” policy resulted in a construction project supported by the community and at the best value to the owner. Upon completion of construction, two older plants were removed from service, eliminating the potential for additional flows into the Yellow River Basin. The new flows are treated to a much higher standard with improved reliability at an overall decreased cost to the owner, ultimately saving the ratepayers money.