NDIA Environment, Energy, and Sustainability Symposium & Exhibition Denver, Colorado May 2009

Transcription

1 Energy Independence and Security Act of 2007 (Energy Conservation, Water Conservation, and Community Development) NDIA Environment, Energy, and Sustainability Symposium & Exhibition Denver, Colorado May 2009 Authors: Dr. F. Robert McGregor, P.E. (AMEC) Aaron Murray, PE (AMEC) Chris Murphy, EIT (Malmstrom AFB, 341 CES) Earth & Environmental

2 Energy Independence and Security Act of 2007 STORMWATER RUNOFF DESIGN REQUIREMENTS Federal Facilities Any development or redevelopment project Footprint greater than 5,000 sq ft..shall Use Site Planning Design Construction Maintenance Strategies To Restore the Predevelopment Hydrology Temperature Rate Volume Duration of flow Get water into the ground and /or Grow vegetation 2

3 Energy Independence and Security Act of 2007 SOLUTIONS Another unfunded mandate How do you do it?? Piggy Back on Other Mandates Water Conservation (Exec. Order 13423: reduce potable water use 16% by 2015) LEED Certification (up to 30% of required certification points) Asset Management Plan Program (Executive Order 13327: Minimize Life Cycle Costs) NUW (Natural Urban Waterway) Design Use stormwater runoff as an asset to create greenspace that enhances aesthetics and improves water quality Mitigate Offsite Damages 3

4 Base-wide Solutions wetland channels Greenwood Gulch, CO Use stormwater as a resource Supports 10 Ac wetlands - improves water quality - provides wildlife habitat - provides urban recreation - groundwater infiltration sustains low flows of gulch Flood and erosion control - transient storage slows velocities and peak runoff rate Cost effective (21% savings) - cost: $1,760,000 vs. - conventional rock lined channel: $2,230,000 4

5 Base-wide Solutions wetland swale Filing 3/5 Swale, CO Cost Effective Alternative (33% savings) 1,600 LF open swale - erosion control - reduce flooding adjacent and downstream properties - wetlands enhance water quality - capital costs $180,000 1,600 LF 60 inch storm sewer alternative - erosion control - reduce flooding adjacent property - increase flooding downstream property - capital costs $270,000 5

6 Site by Site Solutions grasspave fire lane Commercial property Key element in site plan severe site challenges - small site - limited storm sewer capacity - valuable real estate Multiple uses - emergency access - outdoor break area Successful installation for 15 yrs to date 6

7 Site by Site Solutions bioswales Ramstein AFB Parking Lot Bioswales Community (Kaiserslautern) standard practice limited infrastructure (storm sewer) capacity Green roofs Porous surface parking 7

8 Site by Site Solutions bioswales and porous paving Ramstein AFB Commissary Parking Lot Interconnected systems streets and bioswales parking and bioswales 8

9 PROBLEMS 9

10 PROBLEMS 10

11 PROBLEMS 11

12 PROBLEMS 12

13 PROBLEMS 13

14 SOLUTIONS Flow Reduction 14

15 SOLUTIONS Flow Reduction Beneficial use of excess water Rain Gardens at Selected Buildings 15

16 SOLUTIONS Traditional plus Beneficial Use of Excess Water 16

17 SOLUTIONS Flow Reduction Beneficial Use of Excess Water Formal (parks and parkways) Evapotranspiration 17

18 SOLUTIONS Traditional plus Beneficial Use of Excess Water 18

19 SOLUTIONS Flow Reduction Beneficial use of excess water Informal (Wetlands) Evapotranspiration 19

20 SOLUTIONS Traditional plus Beneficial Use of Excess Water 20

21 SOLUTIONS Flow Reduction Beneficial use of excess water Landscape Irrigation 21

22 SOLUTIONS Traditional plus Beneficial Use of Excess Water 22

23 SOLUTIONS Flow Reduction Beneficial use of excess water LID Retrofit Airfield Apron 23

24 SOLUTIONS Traditional plus Beneficial Use of Excess Water 24

25 SOLUTIONS Flow Reduction Beneficial use of excess water Agricultural Reuse 25

26 SOLUTIONS Traditional plus Beneficial Use of Excess Water 26

27 SOLUTIONS March

28 SOLUTIONS 28

29 SOLUTIONS Flow Reduction Beneficial use of excess water 29

30 Discussion AMEC Earth & Environmental, Inc. Dr. F. Robert McGregor, P.E Aaron Murray, P.E