Design I Protect I Sustain Promoting Low Impact Development Sustainable Stormwater Management Anthony Kendrick, ENV SP Director, Green Infrastructure
I Stormwater
Low Impact Development Exceeds Local Water Quality Requirements Eases Burden on Support Entities Prevents Downstream Erosion Mitigates Flash Flooding Aesthetically Appealing Mimics Nature Absorbs Greenhouse Gasses Solves Tough Engineering Challenges
But Do Developers Care? Why Should Developers Care?
The Golden Circle
WHAT Deliverables HOW Beliefs WHY Vision
WHAT HOW
We Sell Great Computers at a Competitive Price"
WHAT HOW
"In everything we do, we believe in challenging the status quo"
We Must Start With WHY
But Do Developers Care? Developers Don t Care About What The Deliverables Are
But Do Developers Care? Not At First
But Do Developers Care? But Yet That s All We Talk About
But Do Developers Care? Developers Don t Care About How You Do It
But Do Developers Care? Developers Primarily Care About WHY They Should Do It
WHY Low Impact Development Increased Lot Yield Lower Overall Cost of Development Increased Revenue No Design Delays / No Construction Delays
LID WHY To Provide Developers With an Ecologically Sustainable Water Management Solution That Positively Impacts Their Bottom Line; Through Creativity, Innovation & Collaboration, Together We Can Build a Future
Story Telling WHY
Birnamwood Drive Harris County WHY LOW IMPACT DEVELOPMENT? - Reduced Construction Costs - Reduced Maintenance Costs - Safety - Practice What We Preach - Proof of Concept
Birnamwood Drive Economics 1-Mile Long 4 lane Concrete Boulevard with Median Traditional (estimated) LID (actual) Site Prep & Earthwork $391,634.00 $449,060.00 Drainage $400,000.00 $288,432.00 SWPPP $69,600.00 $87,000.00 Landscape Planting $30,000.00 $66,140.00 Landscpe warranty/maint $0.00 $34,630.00 Bridge $208,517.00 $208,517.00 Subgrade & Paving $1,139,791.00 $1,139,791.00 Traffic $9,000.00 $9,000.00 Signing & Striping $25,461.00 $25,461.00 Traffic Signal $128,010.00 $128,010.00 Utilities $16,140.00 $16,140.00 Extra Work Items $15,650.00 $36,650.00 Biofiltration System $0.00 $132,931.00 SWQ System $30,000.00 $0.00 Detention Basin $350,000.00 $0.00 Total $2,813,803.00 $2,621,762.00 estimated cost benefit: $192,041.00 7% Cost Reduction Per Mile
Easton Commons New Quest Property WHY LOW IMPACT DEVELOPMENT? - Economics - Economics - Economics - Economics - Economics - Economics - Economics
Easton Commons Economics WHY Underground LOW IMPACT Detention: DEVELOPMENT? -Required Economics Storage 27,950 CF Cost Per CF - $9.50 to $12.00 CF - Economics - Economics Cost of System - $280,000 - Economics - Economics - Economics - Economics
Easton Commons Economics
Easton Commons Economics
Queenston Manor Apartments Academy Development Corp. WHY LOW IMPACT DEVELOPMENT? - Economics - Aesthetics - Maintenance
Queenston Manor Apartments - Economics
Queenston Manor Apartments - Economics Biofiltration Underground storage Pervious pavement (parking) Bioswales
Queenston Manor Apartments - Economics Hard Costs 7 Acres @.35 ACFT/AC = 106,000 CF Integrated Design Approach 43,560 SF Porous Pavers @ $12 SF = $522,720 (-$217,800) = $304,920 21,000CF UG Detention / Drainage @ $6 = $126,000 (-$50,000)= $76,000 600 SF Biofiltration System @ $100 SF = $60.000 50,000 CF @ $.50 CF (Bioswale Excavation & Hauloff) = $25,000 2,500 SY Sod @ $1.30SY = $3,250 Total Cost = $469,170 Opportunity Seized ROI = 10 Months
Queenston Manor Apartments - Economics
Maple Court Palt, Inc WHY LOW IMPACT DEVELOPMENT? - Economics - Aesthetics
Maple Court Palt, Inc
Maple Court Palt, Inc
HOW - Beliefs We must be disciplined in our core values
Having a Clear Message in HOW Low Impact Development Green Infrastructure Multifunctional Design
The Future is Multifunctional Pavements Landscapes Drainage Rooftops
What s The Cost Per Square Foot?
What s The REAL Cost Per Square Foot?
Mimic Predevelopment Hydrology
Would Multifunctional Design
Slow It Down, Spread It Out, Soak It In Time Time of Flow of Flow to to Outlet = 15 3 Minutes
Convey It
Filter It, (Harvest It?) & Let It Go
Resilient Design Site Overflow High Performance Engineered Filter LID Elements Bio-swales: 3 Units Volume=125,000 CuFt HPMBS Area = 330 SF Wetland Pond Storage
Resilient Design
Resilient Design Tax Day > 16
Resilient Design Harvey > 29
Resilient Design Harvey > 29
Resilient Design Harvey > 29
HOW - Beliefs We must be disciplined in our core values
WHAT HOW WHY LID
What - Deliverables We must be consistent in our deliverables
Delivering on a Promise Verify Performance Understand Maintenance Requirements Be Clear About Maintenance Budget Discuss Life-Cycle Costs Keep It As Simple As Possible Have a Post Construction Plan / Budget
Silt Happens
Silt Happens
Performance Verification
Performance Verification
Performance Verification
Maintenance Requirements
Maintenance Requirements
Maintenance Requirements
Maintenance Requirements
Performance Dictates Maintenance
Planting Dictates Maintenance
Planting Dictates Maintenance
Post Construction Plan
WHAT HOW WHY
Delivering on a Promise Verify Performance Understand Maintenance Requirements Be Clear About Maintenance Budget Discuss Life-Cycle Costs Keep It As Simple As Possible Have a Post Construction Plan / Budget
Questions? THANK YOU! Anthony Kendrick, ENV SP Director, Green Infrastructure www.ecosvs.com 214.701.2117