ORCCA Mini-charrette meeting Jul 16, 2010 Courtesy of Scott Edwards Architecture
The Water Balance Model: typical for Cascadia Water Quantity Before 16.5” interflow (infiltration) 26” evapo- transpiratio...
The Water Balance Model Water Quantity After 0” baseflow (infiltration) reduced evapo- transpiration 63” runoff 65” rainfa...
Impervious Surfaces A Watershed Perspective
The Water Balance Model Water Quality Before Some sediment
The Water Balance Model Water Quality After Sediment (air particulates), dissolved pollutants (nitrogen, zinc), heavy meta...
Air
Soil Image from  Soil Quality Information Sheet ,  U.S. Department of Agriculture
B est  M anagement  P ractice s  (aka BMPs) Two Types N
ORCCA’s Priority List – reorganized FILTRATION <ul><li>Bioretention/rain gardens </li></ul><ul><li>Vegetated swales </li><...
Structural BMPs Infiltration and Water Quality <ul><li>Water quality benefits of infiltration techniques from the “Nationa...
ORCCA’s Priority List – reorganized RUNOFF REDUCTION <ul><li>Infiltration </li></ul><ul><li>Trenches </li></ul><ul><li>Rai...
Infiltration trenches are a UIC not recommended for our timeline
Rain Gardens
Other vegetated systems: Planters
Other vegetated systems: Vegetated Filter Strips
Pervious pavements: Use with CAUTION here POROUS ASPHALT IN 1- 2” LIFT UNCOMPACTED SUBGRADE NON-WOVEN PROPYLENE GEOTEXTILE...
Downspout Disconnection
Eco-roofs
Cisterns for parking lot, street, sidewalk,  and roof storage
ORCCA’s Priority List – additional BMPs RUNOFF REDUCTION <ul><li>Trellises and other vertical vegetation </li></ul><ul><li...
Trellises & other vertical vegetation
Trellises & other vertical vegetation
Limit Disturbance in Planning
Limit Disturbance in Design Save a Tree
Limit Disturbance Construction Practices
Limit Disturbance Construction Practices: Don’t cement treat the soil
Minimize impervious surfaces
ORCCA’s Priority List – reorganized STORAGE (aka Peak Flow Attenuation) <ul><li>Caution: Storage for peak flow attenuation...
Storage in wetland at Oleson Woods Apts
ORCCA’s Priority List: additional BMPs STORAGE (aka Peak Flow Attenuation) <ul><li>Compost amendment and other soil restor...
Compost Amendment  & other soil restoration practices Photos on left are from Soils for Salmon website
ORCCA’s Priority List – reorganized CONVEYANCE <ul><li>Eliminate curbs & gutters </li></ul><ul><li>Swales </li></ul><ul><l...
Eliminate curb & gutter
Eliminate curb & gutter
Swales & daylighting
Swale & Daylighting Details
Swale & Daylighting Details
Check dams
ORCCA’s Priority List: additional BMPs CONVEYANCE <ul><li>Don’t impede subsurface flows. </li></ul><ul><li>Use treatment t...
Transportation BMPs Traffic calming woonerf Photo from Techniques for Urban Sustainability website
Additional BMPs: Source Control
Additional BMPs Source Control in Construction
Additional BMPs Source Control in Construction Photo excerpted from “BMPs for Stormwater Discharges Associated with Constr...
Additional BMPs Source Control in Construction Photos and study and text excerpted from “BMPs for Stormwater Discharges As...
Additional BMPs Source Control Post Construction
Biodiversity
Siting Consideration N
Additional BMPs discussed but no photos <ul><li>More landscape practices </li></ul><ul><li>Water use </li></ul><ul><li>Sou...
ORCCA Mini-charrette meeting Jul 16, 2010 Sustainability for all the places between the buildings.
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2010 07-16 orcca minicharrette

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This is a presentation designed to show examples of practices that are being suggested for the ORCCA land development project in Coos Bay, OR

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  • 0-10% Coverage: Streams are structurally sound with good biodiversity and habitat 11-25% Coverage: Streambanks become unstable, biodiversity is lost, &amp; water quality is degraded &gt;25% Coverage: Stream life is lost &amp; water quality is poor
  • Soils support plant and animal biodiversity, sequester GH Soil temperature is important for seed germination, pest control, nitrogen uptake.
  • Non-Structural: Preventative Restorative Early planning Structural: Mitigative Engineered/Designed After the fact
  • Costs Vegetation Land area Benefits Biodiversity Water Quality Water Quantity We reduce the cost of: Pipes Detention basins Water quality facilities Catch basins Manholes Excavation Compaction
  • Costs Vegetation Land area Benefits Biodiversity Water Quality Water Quantity We reduce the cost of: Pipes Detention basins Water quality facilities Catch basins Manholes Excavation Compaction
  • Costs Vegetation Land area Benefits Biodiversity Water Quality Water Quantity We reduce the cost of: Pipes Detention basins Water quality facilities Catch basins Manholes Excavation Compaction
  • Asphalt Concrete Pavers Flexible Paving Systems Gravel Aggregate Turf Soft porous surfaces Decks &amp; Boardwalks
  • Compared to a pipe, daylighting Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an Costs Vegetation or other material to finish off swale look (not mulch – it floats!) Splash blocks Check dams Liners near footings (30 mil polyethylene or bentonite clay) Extra design and construction considerations Amenity Benefits Reduces the cost of: Excavation and compaction of pipe trench Pipe installation Eliminates the cost of base rock Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an amenity
  • Develop a plan that reuses resources in place Re-purpose previously disturbed areas Avoid sensitive areas. Reduce excavation. Limit compaction. Avoid building in areas that provide habitat for threatened and endangered species. Don&apos;t build in the floodplain, in wetlands, too close to waterways, or too close to coastal shorelines. Don&apos;t build on prime farmland or other significant soils. Build on gray or brownfields. Plan for transportation. To cross a stream with a utility, align it across a bridge or in casing above the stream instead of boring underneath the stream to bury it. Align utilities together in the same trench. Costs Working and designing around existing infrastructure Benefits Saves natural resources Reduce the cost of: Tipping fees Shipping Buying &amp; installing new materials
  • Filter air pollution Sequester carbon dioxide to roduce oxygen Reduce the heat island effect Provide erosion control Filter pollutants in water Reduce stormwater runoff Cool streams Increase property values Reduce property selling time Costs Arborist report Extra design considerations Define haul road &amp; stockpile locations Design infrastructure around driplines Tree fencing (orange mesh or rented chainlink) Pre-construction meeting to coordinate intent with subs Benefits Increase property values Reduce property selling time Reduce the cost of: Clearing Erosion control Tree mitigation fees Planting and establishing new trees Irrigation system for new trees Stormwater management
  • Develop a plan that reuses resources in place Re-purpose previously disturbed areas Avoid sensitive areas. Reduce excavation. Limit compaction. Avoid building in areas that provide habitat for threatened and endangered species. Don&apos;t build in the floodplain, in wetlands, too close to waterways, or too close to coastal shorelines. Don&apos;t build on prime farmland or other significant soils. Build on gray or brownfields. Plan for transportation. To cross a stream with a utility, align it across a bridge or in casing above the stream instead of boring underneath the stream to bury it. Align utilities together in the same trench. Costs Working and designing around existing infrastructure Benefits Saves natural resources Reduce the cost of: Tipping fees Shipping Buying &amp; installing new materials
  • Develop a plan that reuses resources in place Re-purpose previously disturbed areas Avoid sensitive areas. Reduce excavation. Limit compaction. Avoid building in areas that provide habitat for threatened and endangered species. Don&apos;t build in the floodplain, in wetlands, too close to waterways, or too close to coastal shorelines. Don&apos;t build on prime farmland or other significant soils. Build on gray or brownfields. Plan for transportation. To cross a stream with a utility, align it across a bridge or in casing above the stream instead of boring underneath the stream to bury it. Align utilities together in the same trench. Costs Working and designing around existing infrastructure Benefits Saves natural resources Reduce the cost of: Tipping fees Shipping Buying &amp; installing new materials
  • Compared to a pipe, daylighting Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an Costs Vegetation or other material to finish off swale look (not mulch – it floats!) Splash blocks Check dams Liners near footings (30 mil polyethylene or bentonite clay) Extra design and construction considerations Amenity Benefits Reduces the cost of: Excavation and compaction of pipe trench Pipe installation Eliminates the cost of base rock Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an amenity
  • Develop a plan that reuses resources in place Re-purpose previously disturbed areas Avoid sensitive areas. Reduce excavation. Limit compaction. Avoid building in areas that provide habitat for threatened and endangered species. Don&apos;t build in the floodplain, in wetlands, too close to waterways, or too close to coastal shorelines. Don&apos;t build on prime farmland or other significant soils. Build on gray or brownfields. Plan for transportation. To cross a stream with a utility, align it across a bridge or in casing above the stream instead of boring underneath the stream to bury it. Align utilities together in the same trench. Costs Working and designing around existing infrastructure Benefits Saves natural resources Reduce the cost of: Tipping fees Shipping Buying &amp; installing new materials
  • Compared to a pipe, daylighting Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an Costs Vegetation or other material to finish off swale look (not mulch – it floats!) Splash blocks Check dams Liners near footings (30 mil polyethylene or bentonite clay) Extra design and construction considerations Amenity Benefits Reduces the cost of: Excavation and compaction of pipe trench Pipe installation Eliminates the cost of base rock Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an amenity
  • Compared to a pipe, daylighting Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an Costs Vegetation or other material to finish off swale look (not mulch – it floats!) Splash blocks Check dams Liners near footings (30 mil polyethylene or bentonite clay) Extra design and construction considerations Amenity Benefits Reduces the cost of: Excavation and compaction of pipe trench Pipe installation Eliminates the cost of base rock Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an amenity
  • Compared to a pipe, daylighting Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an Costs Vegetation or other material to finish off swale look (not mulch – it floats!) Splash blocks Check dams Liners near footings (30 mil polyethylene or bentonite clay) Extra design and construction considerations Amenity Benefits Reduces the cost of: Excavation and compaction of pipe trench Pipe installation Eliminates the cost of base rock Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an amenity
  • Compared to a pipe, daylighting Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an Costs Vegetation or other material to finish off swale look (not mulch – it floats!) Splash blocks Check dams Liners near footings (30 mil polyethylene or bentonite clay) Extra design and construction considerations Amenity Benefits Reduces the cost of: Excavation and compaction of pipe trench Pipe installation Eliminates the cost of base rock Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an amenity
  • Compared to a pipe, daylighting Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an Costs Vegetation or other material to finish off swale look (not mulch – it floats!) Splash blocks Check dams Liners near footings (30 mil polyethylene or bentonite clay) Extra design and construction considerations Amenity Benefits Reduces the cost of: Excavation and compaction of pipe trench Pipe installation Eliminates the cost of base rock Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an amenity
  • Compared to a pipe, daylighting Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an Costs Vegetation or other material to finish off swale look (not mulch – it floats!) Splash blocks Check dams Liners near footings (30 mil polyethylene or bentonite clay) Extra design and construction considerations Amenity Benefits Reduces the cost of: Excavation and compaction of pipe trench Pipe installation Eliminates the cost of base rock Slows, treats and cools the flow Contributes to biodiversity Fish habitat Animal passage Native plants Increases infiltration Can be an amenity
  • “ Sediment runoff rates from construction sites can be up to 20 times greater than agricultural sediment loss rates and 1000-2000 greater than those of forested lands .”
  • Costs Keep it clean or a clogged filter sack will flood the street Benefits Easier to maintain than biobags Much better protection against polluted waters leaving the site
  • Caine 2001 Snohomish County 2006 studies by WRG Costs Compost berm can be created with a bobcat or by blowing it in place Lack of familiarity Benefits No trenching, compaction, construction, or disposal Easier to maintain than sediment fences Much better protection against turbid waters leaving the site Compost can be spread over site when project is done instead of disposing of sediment fence
  • Orient long side of building on east-west axis Plant deciduous trees on the south sides of buildings Order trash and recycling pick up when bins are full instead of on a regular basis Plan to encourage walking Specify low-grow native seed mixes instead of high maintenance lawn
  • Orient long side of building on east-west axis Plant deciduous trees on the south sides of buildings Order trash and recycling pick up when bins are full instead of on a regular basis Plan to encourage walking Specify low-grow native seed mixes instead of high maintenance lawn
  • Transcript of "2010 07-16 orcca minicharrette"

    1. 1. ORCCA Mini-charrette meeting Jul 16, 2010 Courtesy of Scott Edwards Architecture
    2. 2. The Water Balance Model: typical for Cascadia Water Quantity Before 16.5” interflow (infiltration) 26” evapo- transpiration 0.2” runoff 65” rainfall yearly avg 22” groundwater (infiltration)
    3. 3. The Water Balance Model Water Quantity After 0” baseflow (infiltration) reduced evapo- transpiration 63” runoff 65” rainfall yearly avg 2” evapo- transpiration Reduced infiltration
    4. 4. Impervious Surfaces A Watershed Perspective
    5. 5. The Water Balance Model Water Quality Before Some sediment
    6. 6. The Water Balance Model Water Quality After Sediment (air particulates), dissolved pollutants (nitrogen, zinc), heavy metals, Feces, Temperature, other debris Sediment/turbidity, Hydrocarbons, Heavy metals, temp, feces, other chemicals Sediment/turbidity fertilizers, pesticides herbicides, feces, heavy metals
    7. 7. Air
    8. 8. Soil Image from Soil Quality Information Sheet , U.S. Department of Agriculture
    9. 9. B est M anagement P ractice s (aka BMPs) Two Types N
    10. 10. ORCCA’s Priority List – reorganized FILTRATION <ul><li>Bioretention/rain gardens </li></ul><ul><li>Vegetated swales </li></ul><ul><li>Vegetated filter strips </li></ul><ul><li>Wetland preservation </li></ul>
    11. 11. Structural BMPs Infiltration and Water Quality <ul><li>Water quality benefits of infiltration techniques from the “National Pollutant Removal Performance Database for Stormwater Treatment Practices” Center for Watershed Protection, June 2000 </li></ul>Pollutant Infiltration SW Wet-land Wet Pond Filtering WQ Swale Dry Pond Total Phosphorus 70 49 51 59 34 19 Soluble Phosphorus 85 35 66 3 38 -6 Total Nitrogen 51 30 33 38 84 25 Nitrate 82 67 43 -14 31 4 Copper N/A 40 57 49 51 26 Zinc 99 44 66 88 71 26 Total Suspended Solids 95 76 80 86 81 47
    12. 12. ORCCA’s Priority List – reorganized RUNOFF REDUCTION <ul><li>Infiltration </li></ul><ul><li>Trenches </li></ul><ul><li>Rain gardens & other vegetated treatment systems </li></ul><ul><li>Porous pavement </li></ul><ul><li>Disconnected downspouts </li></ul><ul><li>Evaporation </li></ul><ul><li>Eco-roof </li></ul><ul><li>Reuse </li></ul><ul><li>Cisterns for parking lot, street, sidewalk, and roof storage </li></ul><ul><li>Additional suggestions: </li></ul><ul><li>Limit disturbance </li></ul><ul><li>Save trees </li></ul>
    13. 13. Infiltration trenches are a UIC not recommended for our timeline
    14. 14. Rain Gardens
    15. 15. Other vegetated systems: Planters
    16. 16. Other vegetated systems: Vegetated Filter Strips
    17. 17. Pervious pavements: Use with CAUTION here POROUS ASPHALT IN 1- 2” LIFT UNCOMPACTED SUBGRADE NON-WOVEN PROPYLENE GEOTEXTILE 12” 1-1/2” to 1” WASHED CRUSHED AGGREGATE 3”
    18. 18. Downspout Disconnection
    19. 19. Eco-roofs
    20. 20. Cisterns for parking lot, street, sidewalk, and roof storage
    21. 21. ORCCA’s Priority List – additional BMPs RUNOFF REDUCTION <ul><li>Trellises and other vertical vegetation </li></ul><ul><li>Limit disturbance </li></ul><ul><ul><li>In Planning </li></ul></ul><ul><ul><li>Save a tree in design </li></ul></ul><ul><ul><li>In construction </li></ul></ul><ul><li>Minimize impervious surfaces </li></ul>
    22. 22. Trellises & other vertical vegetation
    23. 23. Trellises & other vertical vegetation
    24. 24. Limit Disturbance in Planning
    25. 25. Limit Disturbance in Design Save a Tree
    26. 26. Limit Disturbance Construction Practices
    27. 27. Limit Disturbance Construction Practices: Don’t cement treat the soil
    28. 28. Minimize impervious surfaces
    29. 29. ORCCA’s Priority List – reorganized STORAGE (aka Peak Flow Attenuation) <ul><li>Caution: Storage for peak flow attenuation is not necessarily LID but will help us argue against the detention pipe. </li></ul><ul><li>Depressional storage in landscape islands and in tree, shrub, or turf depressions = runoff reduction through infiltration and treatment </li></ul><ul><li>Storage in wetland </li></ul><ul><li>Compost amendment and other soil restoration practices </li></ul>
    30. 30. Storage in wetland at Oleson Woods Apts
    31. 31. ORCCA’s Priority List: additional BMPs STORAGE (aka Peak Flow Attenuation) <ul><li>Compost amendment and other soil restoration practices </li></ul>
    32. 32. Compost Amendment & other soil restoration practices Photos on left are from Soils for Salmon website
    33. 33. ORCCA’s Priority List – reorganized CONVEYANCE <ul><li>Eliminate curbs & gutters </li></ul><ul><li>Swales </li></ul><ul><li>Roughening surfaces </li></ul><ul><li>Long overland flow paths over landscaped areas </li></ul><ul><li>Installing smaller culverts, pipes, & inlets </li></ul><ul><li>Creating terraces and check dams </li></ul>
    34. 34. Eliminate curb & gutter
    35. 35. Eliminate curb & gutter
    36. 36. Swales & daylighting
    37. 37. Swale & Daylighting Details
    38. 38. Swale & Daylighting Details
    39. 39. Check dams
    40. 40. ORCCA’s Priority List: additional BMPs CONVEYANCE <ul><li>Don’t impede subsurface flows. </li></ul><ul><li>Use treatment trains to extend the life of the vegetated facilities. </li></ul>
    41. 41. Transportation BMPs Traffic calming woonerf Photo from Techniques for Urban Sustainability website
    42. 42. Additional BMPs: Source Control
    43. 43. Additional BMPs Source Control in Construction
    44. 44. Additional BMPs Source Control in Construction Photo excerpted from “BMPs for Stormwater Discharges Associated with Construction Activities”, DEQ, Feb 2006
    45. 45. Additional BMPs Source Control in Construction Photos and study and text excerpted from “BMPs for Stormwater Discharges Associated with Construction Activities”, DEQ, Feb 2006
    46. 46. Additional BMPs Source Control Post Construction
    47. 47. Biodiversity
    48. 48. Siting Consideration N
    49. 49. Additional BMPs discussed but no photos <ul><li>More landscape practices </li></ul><ul><li>Water use </li></ul><ul><li>Source control </li></ul><ul><li>Materials </li></ul><ul><li>Operations & Maintenance </li></ul><ul><li>Social Goals </li></ul><ul><li>Passive Solar Design </li></ul><ul><li>Construction Management </li></ul>
    50. 50. ORCCA Mini-charrette meeting Jul 16, 2010 Sustainability for all the places between the buildings.
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