Helping
Communities

Parking Lot Curb Inlet - Rayzor Ranch – Denton, TX

Rayzor Ranch North (officially Rayzor Ranch Marketplace), is a 100-acre parcel within the Rayzor Ranch development, a privately-owned, 400-acre mixed-use development in Denton Texas. Rayzor Ranch is one of the first projects in the City of Denton using iSWM design criteria. The project, owned by Allegiance Hillview, L.P., was begun in 2008 and construction for Phase I was completed in 2010. Within the 400-acre Rayzor Ranch development, the Marketplace is an approximately 100-acre retail center with an ultimate buildout of approximately 800,000 SF of large retail, junior anchors, specialty retailers, restaurant and financial institutions. A 39-acre tract includes anchor tenants Walmart and a Sam's Club.

Rayzor Ranch North incorporates several iSWM site controls including a water quality pond, four bioretention areas, a pocket wetland, an enhanced swale, a filter strip, and several parking lot islands with filter strips as components in the treatment train. The treatment train was integrated into the overall landscape concept which has lead to a truly integrated design that is aesthetically pleasing, utilitarian in conveying drainage, and environmentally responsible in the treatment of the water quality for removing both on and off-site pollutants before discharging the storm drainage.

Permeable Pavers – Carrollton, TX

In Carrollton, Texas, a downtown parking lot uses Grasstone pavers for interior parking spaces. The pavers allow grass to grow on the paver's interior and permits stormwater to infiltrate into the pavement subsurface.

Water Resource Zone – Frisco, TX

The City of Frisco, an iSWM Silver Certified Community, requires Water Resource Zones in all new development. The Water Resource Zones are typically located adjacent to parking surfaces and shall be used to capture, slow, filter, and absorb storm water before entering the storm water system. This regulation is found in their landscape ordinance, where it states these areas must equal to at least 5% for nonresidential and at least 7% for multifamily of the impervious parking area. Treatment devices that are encouraged to go in this area include bio-retention, filter strips, and bio-swales as specified by locally accepted standards.

Green Parking Lot – Fort Worth Nature Center and Refuge– Fort Worth, TX

This site incorporated recycled crushed concrete in its permeable parking lot. Before this new construction, the center was experiencing issues with continual groundwater seepage, an issue that was resolved when this new parking lot made of compacted gravel and crushed concrete, combined with five bioswales, was installed. The new design for the Fort Worth Nature Center and Refuge parking lot allowed for additional parking spaces. The choice of pavers for the Triangle Parking Lot project led to an increase in available surface area, which equaled 40 additional spaces. The Fort Worth Nature Center and Refuge reports its system as being very low maintenance; it mostly included sweeping material back in place.