17,000 Cubic Foot Stormwater Detention And Sand Filter System Installed In 3 Days At New Upscale Townhome Development In Charlotte, NC

Oldcastle Stormwater Solutions Group supplied a 17,000 cubic foot stormwater detention and sand filter system at the new Cottages on Providence development in Charlotte, North Carolina, an upscale townhome development by Wendy Field Consulting.

Site designer Orsborn Engineering Group, Charlotte, North Carolina, needed a combination stormwater detention and sand filter system to control and remove pollutants from post-construction runoff for this very dense urban development. Oldcastle Stormwater Solutions manufactured and delivered their Storm Capture® module system to meet the requirements for an integrated stormwater detention and treatment system with large storage capacity and a small installed footprint.

The stormwater detention system, sand filter system, and forebay chambers were combined to create a single stormwater management system. The system, installed under the driveway between two rows of townhomes, includes a detention systrem, comprised of (19) nineteen 5 foot tall modules; a sand filter system, created using (6) six 9 foot tall modules; and (2) two sedimentation forebay chambers, comprised of (2) two 9 foot tall modules.

The forebay chambers trap large sediments and floatables, while the sand filter uses sand media to filter smaller particles and other pollutants. The detention chamber will store runoff and allow sufficient time for treatment through the sand filter. Discharge from the system is controlled by an orifice plate at the outlet pipe. The system is designed to meet AASHTO HS-20-44 for traffic loads and has multiple manways for future maintenance access.

The stormwater management system receives water from site storm drains and downspout collection pipes, as well as from a grate directly over the top of one of the forebay modules. Water will pass through the Storm Capture system and then out to the storm drains.

Charlotte, North Carolina based Siteworks LLC, installed the Storm Capture system over a three day period, in June of 2014, for General Contractor HR Construction. The base sections of the sand filter, detention, and forebay modules were installed the first day. On day two, the modular nature of the Storm Capture system provided the contractor with an opportunity to install all of the internal sand filter components (under drain piping, stone, and sand media) very easily while the system was still open. Then on day three, the tops of the modules were installed and backfilling operations began.

The stormwater management system constructed at The Cottages on Providence project will control and treat rainwater run-off during storms adding a positive result to the communities’ environment now and in the future. The Cottages on Providence is scheduled to have townhomes available for occupancy in January 2015.

About Oldcastle Stormwater Solutions
With a strong pipeline of innovation, Oldcastle Stormwater Solutions brings a full line of water conveyance, storage, and treatment products to the marketplace. In addition, with Oldcastle Stormwater Solutions successful launch of Storm Capture detention, retention and infiltration products Oldcastle Stormwater Solutions now provides the entire treatment train solution that civil engineers, owners and contractors are demanding. For more information, visit www.oldcastlestormwater.com.

About Oldcastle Precast
Oldcastle Precast is the clear choice for building products and services for North American Infrastructure projects. We are a leading provider of engineered precast product solutions including the newly acquired solutions from KriStar enterprises. Oldcastle Precast serves a number of market sectors including:

• Building Structures – Communications – Government/Military
• Power & Energy - Security - Transportation – Water
• Construction Services – Engineering Support – LEED/Green Consulting

For more information, visit www.oldcastleprecast.com.