Low Impact Development Structures for Educational Opportunities - PowerPoint PPT Presentation

Low Impact Development Structures for Educational Opportunities 2017 Urban Riparian Symposium Houston, TX Lauren Willis Guadalupe-Blanco River Authority lwillis@gbra.org 830-379-5822

319 Nonpoint Source Grant with TCEQ Geronimo and Alligator Creeks Watershed Protection Plan (WPP) Implementation - Education and Outreach Goals Address the bacteria impairment and nutrient concerns in Geronimo Creek • Enhance public understanding of the health of a riparian ecosystem • Tasks Riparian Education • Nonpoint Source Pollution Education • Demonstration of Low Impact Development Practices • Total Project Costs $306,667 • Partners Texas AgriLife Extension Service • Irma Lewis Seguin Outdoor Learning Center •

Irma Lewis Seguin Outdoor Learning Center Mission To provide an educational experience for all ages in a natural setting. The Geronimo Creek flows through the ILSOLC facility (115 acres) and is used as part of an outdoor “classroom” for learning about nature and the environment. School children of all ages from the Seguin, New Braunfels and Comal ISDs visit the facility annually.

Rainwater Harvesting

Rainwater Harvesting • 5,000 Gallon Tank • Construction Cost: $11,000 – $7,000 Tank, sand pad and rock aggregate – $300 brick ring and gravel around tank – $1,500 160 linear feet of gutters – $700 general construction supplies & gutter downspout to tank – $900 Pump, pump wiring and weather-proof structure – $275 irrigation supplies to garden • Signage Cost: $450 – $280 build frame – $156 printing signage • Construction Time: 1 Week

Rain Garden Before After

Rain Garden

Rain Garden • Acres of drainage: 4-5 Acres • Construction Cost: $42,000 – $29,225 Excavation and labor for project – $8,100 Materials from New Earth – $1,200 Drainage – $400 Fencing – $1,500 Sod – $1,300 Plants – $275 Irrigation for new plants and sod • Project Oversight: $12,000 • Signage Cost: $450 – $280 build frame – $156 printing signage • Construction Time: 4 weeks using a 2-3 man team

Pervious Pavement Before After

Pervious Pavement • Construction Cost: $21,000 – $16,000 Excavation and labor for project – $400 Stabilizing Filter Fabric – $1,400 Gravel – $2,100 TrueGrid Material – $400 Drainage – $250 Concrete Ribbon • Project Oversight: $6,000 • Signage Cost: $450 – $280 build frame – $156 printing signage • Construction Time: 3 weeks using a 2-3 man team

Vegetated Swale Before After

Vegetated Swale • Construction Cost: $98 – $65 Cedar Posts – $33 Seed • Project Oversight: None • Signage Cost: $450 – $280 build frame – $156 printing signage • Construction Time: 3 days using a 2 man team

Questions? Lauren Willis Guadalupe-Blanco River Authority lwillis@gbra.org 830-379-5822