1. Welcome
This is the second of several public meetings that will be held during the planning and design of the Big Creek Water Reclamation Facility (WRF) Expansion project.
There are a series of information stations around the room that you can visit providing information on some of the key concerns we anticipate you and others may have. Please feel free to speak to us about your concerns and provide them in writing to us if you choose.
As we continue the design for this project, we wanted to provide this opportunity to inform the public of the design progress and to continue to solicit feedback from the community as to what will be important to you for this project.
The website BIGCREEKEXPANSION.COM has also been established as another way for you to provide input to us on the project.
We are committed to listening to concerns that the surrounding community may have with the project so we can work to address any concerns as part of the design process.

2. Project Summary Project Goal Project Benefits Project Details
Protecting the environment while improving the quality of treated water discharged into the Chattahoochee River and meeting the capacity treatment demands of areas served
Project Benefits
Increase capacity to meet communities’ needs
Provide state-of-the-art advanced treatment for reliable compliance with both current and projected future regulations/limits
Eliminate odor and improve facility aesthetics
Restore reliability and safety for aging facility
Project Details
Big Creek WRF first constructed in 1971
Several expansions since 1971 – current capacity of 24 million gallons per day (mgd)
Serves Roswell, Alpharetta, portions of Milton and Johns Creek, and areas of Cobb and Forsyth Counties
Metropolitan North Georgia Water Planning District forecast - continued population growth and economic development require additional capacity
Expanded plant to ultimately handle 38 mgd using state of the art membrane technology and new odor control systems
Replacement of aging equipment and demolition of older and unused facilities

3. Schedule and Additional Public Input
30% Design has been completed and the new facility is expected to be fully operational in late 2023.
Additional public meetings will be held at around 80% design to provide further updates and seek public feedback, and at the start of construction.
Once construction is underway, regular progress updates will be provided via the project website and social media (visit the Community Engagement/Information Updates station for more on this).

4. Overall Treatment Process

5. MBR Technology
A membrane bioreactor (MBR) system is an advanced technology used for treating wastewater
The system combines biological treatment/nutrient removal with microfiltration membranes that filter out particles greater than 0.2 um (one thousandth of a millimeter) in diameter. Flat Plate membrane technology provided by KUBOTA was competitively selected for the Big Creek WRF Facility
MBR technology is one of the most advanced treatment technologies in wastewater treatment and has successfully been implemented by Fulton County for over a decade at the Johns Creek Environmental Campus and numerous other facilities around the US and the world
KUBOTA Flat Plate Membranes

6. Water Quality Improvements
Significantly greater capacity with significantly reduced load/impact to the Chattahoochee River compared to current permitted levels
The high water quality helps protect the environment
Permitted Levels at 38 mgd
Current Permit Levels at 24 mgd

7. Existing Site Layout Admin Bldg & Lab Headworks Dewatering Bldg
Filters
UV & Post Aeration
BNR Tanks
Secondary Clarifiers
Digesters

8. New Facility Layout Fine Screens Primary Clarifiers Odor Control
BNR Tanks
Digesters
Lab
MBR Tanks
Headworks
UV & Post Aeration
Equalization Tanks
Dewatering Bldg
Electrical Bldg
Chemical Bldg
Admin Bldg

9. New Facility Layout

10. New Facility Layout Digesters Odor Control Primary Clarifiers
Fine Screens
Lab
Headworks
BNR Tanks
Chemical Bldg
Equalization Tanks
MBR Tanks
Dewatering Bldg
Admin Bldg
UV & Post Aeration
Electrical Bldg

11. New Facility Layout

12. Landscaping Buffers A B B A AMERICAN HOLLY CAROLINA #2
EXISTING WOODLAND TO REMAIN
EXISTING EVERGREEN SCREEN HEDGE
PRIMARY SCREENING AREA B
EXISTING ROAD TO BE REMOVED
PROPOSED BUILDINGS A B
AMERICAN HOLLY CAROLINA #2
BRODIE EASTERN RED CEDAR
LOBLOLLY PINE (CANOPY SCREENING)

13. Architecture
The new Big Creek WRF improvements will be designed in coordination with existing facilities
Buildings will be brick / concrete construction
Some of the new structures will have a pitched roof
Majority of the facilities will be closed / not visible to the public
Admin Building will have public gathering space

14. Design Update
Submitted and received acknowledgement for the Design Development Report from Georgia EPD
Have progressed the design to 30%
Have gone through the procurement process and selected the membrane system supplier (Kubota)
Have selected site configuration for new facilities
Conducted subsurface geotechnical evaluations
Developed odor treatment modeling to size odor control equipment

15. Minimizing Neighborhood Impacts During Construction
During Construction, careful attention will be paid to minimizing impacts to the surrounding community
All construction traffic to the site will use Highway 120 and not Willeo Road. Traffic will not use surrounding neighborhoods to turn around.
Evaluating options to re-use existing material onsite as backfill material to minimize hauling traffic in and out of the site.
Dust and erosion control measures will be employed to protect surrounding streams and reduce impacts to surrounding communities.
Optimized construction schedule reducing overall project duration.
Management of work hours during construction to meet requirements of the City of Roswell.
24-hr hotline will be provided for reporting of any issues.

16. Minimizing Neighborhood Impacts - Odor Control
The new Big Creek WRF will have the following odor control provisions:
Treatment basins will be covered.
Fans connected to the odor control equipment will draw air from under the basin covers so that all air in the basins will be treated by the odor control equipment.
Chemical Scrubber (example installation)
Multi-stage chemical scrubbers followed by Granular Activated Carbon (GAC) for highest odor areas, and GAC for the remainder of potential odorous areas.
Sensors will monitor the air leaving the GAC units to make sure they are working properly.
GAC (example installation)

17. Minimizing Neighborhood Impacts – Noise and Light
The new Big Creek WRF will address noise and light concerns with the following provisions wherever practical:
Locating noise and light sources away from neighbors
Centralizing regular traffic on the site
Using noise reduction enclosures for equipment
Using directional, full cutoff area lighting to limit light emissions offsite
Using lighting controls to limit the use of lighting when not needed
Example Noise Reduction Enclosures
VERY BAD
Minimizing Light Impacts

18. Community Engagement/Information Updates
Design Phase
Project updates and information
Frequently asked questions
Plant information
Project related news
Public meetings
Construction Phase
Project updates, news, and information
Construction progress photos and videos
Project Website
bigcreekexpansion.com
The website and social media will be used to keep anyone interested up to date on the project
More Information: Kelly Comstock )

19. BIG CREEK WRF EXPANSION PUBLIC MEETING

20. BIG CREEK WRF EXPANSION PUBLIC MEETING

21. BIG CREEK WRF EXPANSION PUBLIC MEETING