(Created page with "<font size=3>'''Filtration - system design information'''</font size><br> Link to this table <table class="sortable"> <tr> <th>Devi...")
 
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<td>Pretreatment vegetated filter strip (VFS)</td>
 
<td>Pretreatment vegetated filter strip (VFS)</td>
<td>< a few acres, max flow path 75-150 ft depending on perviousness, slope of drainage area <5% , </td>
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<td>< a few acres, max flow path 75-150 ft depending on perviousness, slope of drainage area <5% [https://stormwater.pca.state.mn.us/index.php?title=Design,_construction,_operation_and_maintenance_specifications_for_pretreatment_vegetated_filter_strips]; [https://www.stormwaterpa.org/assets/media/BMP_manual/chapter_6/Chapter_6-4-9.pdf]</td>
<td><1 ft/s, flow should be sheet flow and unconcentrated</td>
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<td><1 ft/s, flow should be sheet flow and unconcentrated [https://stormwater.pca.state.mn.us/index.php?title=Design,_construction,_operation_and_maintenance_specifications_for_pretreatment_vegetated_filter_strips]</td>
<td>Maximum 72 hours</td>
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<td>Maximum 72 hours [https://www.stormwaterpa.org/assets/media/BMP_manual/chapter_6/Chapter_6-4-9.pdf]</td>
<td>VFS width (parallel to sheet flow) = 25-100 ft depending on vegetation, slope and drainage area soil</td>
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<td>VFS width (parallel to sheet flow) = 25-100 ft depending on vegetation, slope and drainage area soil [https://www.njstormwater.org/bmp_manual/NJ_SWBMP_9.10.pdf]; [https://www.stormwaterpa.org/assets/media/BMP_manual/chapter_6/Chapter_6-4-9.pdf]</td>
<td>Soil, grass</td>
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<td>Soil, grass [https://www.stormwaterpa.org/assets/media/BMP_manual/chapter_6/Chapter_6-4-9.pdf]</td>
<td>Residential lawns, parking lots, part of riparian buffer</td>
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<td>Residential lawns, parking lots, part of riparian buffer [https://www.stormwaterpa.org/assets/media/BMP_manual/chapter_6/Chapter_6-4-9.pdf]</td>
<td>Hydrologic Soil Groups A-D permitted, table for corresponding slopes</td>
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<td>Hydrologic Soil Groups A-D permitted, table for corresponding slopes [https://www.njstormwater.org/bmp_manual/NJ_SWBMP_9.10.pdf]</td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
 
<td>Level-Spreader - Vegetative Filter Strip System (LS-VFS)</td>
 
<td>Level-Spreader - Vegetative Filter Strip System (LS-VFS)</td>
<td>< a few acres</td>
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<td>< a few acres [https://stormwater.pca.state.mn.us/index.php?title=Design,_construction,_operation_and_maintenance_specifications_for_pretreatment_vegetated_filter_strips]</td>
<td><=10cfs</td>
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<td><=10cfs [https://files.nc.gov/ncdeq/Energy%20Mineral%20and%20Land%20Resources/Stormwater/BMP%20Manual/C-9--Level-Spreader-Filter-Strips-11-20-2020.pdf]</td>
<td>Maximum 72 hours</td>
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<td>Maximum 72 hours [https://www.stormwaterpa.org/assets/media/BMP_manual/chapter_6/Chapter_6-4-9.pdf]</td>
<td>LS width (parallel to sheet flow) = 10-100 ft, VFS width >= 30-50 ft</td>
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<td>LS width (parallel to sheet flow) = 10-100 ft, VFS width >= 30-50 ft [https://files.nc.gov/ncdeq/Energy%20Mineral%20and%20Land%20Resources/Stormwater/BMP%20Manual/C-9--Level-Spreader-Filter-Strips-11-20-2020.pdf]</td>
<td>Concrete, soil, grass</td>
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<td>Concrete, soil, grass [https://files.nc.gov/ncdeq/Energy%20Mineral%20and%20Land%20Resources/Stormwater/BMP%20Manual/C-9--Level-Spreader-Filter-Strips-11-20-2020.pdf]</td>
<td>Distance from surface waters: LS and VFS must be outside riparian buffer, LS must be outside stormwater setbacks</td>
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<td>Distance from surface waters: LS and VFS must be outside riparian buffer, LS must be outside stormwater setbacks [https://files.nc.gov/ncdeq/Energy%20Mineral%20and%20Land%20Resources/Stormwater/BMP%20Manual/C-9--Level-Spreader-Filter-Strips-11-20-2020.pdf]</td>
<td>VFS max slope = 8% </td>
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<td>VFS max slope = 8% [https://files.nc.gov/ncdeq/Energy%20Mineral%20and%20Land%20Resources/Stormwater/BMP%20Manual/C-9--Level-Spreader-Filter-Strips-11-20-2020.pdf]</td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td>Up-Flo Filter</td>
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<td>[https://hydro-int.com/en/products/flo-filter Up-Flo Filter]</td>
 
<td>0.66 acres impervious drainage area per filter module based on Nashville design storm</td>
 
<td>0.66 acres impervious drainage area per filter module based on Nashville design storm</td>
<td>0.056 cfs per filter module (max number of modules 6-54) </td>
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<td>0.056 cfs per filter module (max number of modules 6-54)</td>
 
<td></td>
 
<td></td>
 
<td>Round manhole: 4 ft diameter, 7.5 ft high Rectangular vaults: 6 ft x 8 ft x 6.5 ft to 15 ft x 13 ft x 6.5 ft</td>
 
<td>Round manhole: 4 ft diameter, 7.5 ft high Rectangular vaults: 6 ft x 8 ft x 6.5 ft to 15 ft x 13 ft x 6.5 ft</td>
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</tr>
 
</tr>
 
<tr>
 
<tr>
<td>Storm Clean</td>
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<td>[https://cleanwayusa.com/storm-clean-filtration-systems/ Storm Clean]</td>
 
<td></td>
 
<td></td>
 
<td>Filtration flow rates (nominal/max)= 40/80 gpm, Strainer flow rate >= 100 gpm</td>
 
<td>Filtration flow rates (nominal/max)= 40/80 gpm, Strainer flow rate >= 100 gpm</td>
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<td></td>
 
<td></td>
 
<td></td>
 
<td></td>
<td>Varies by need. For example, one version available comes in 11x48, 11x96, and 19x28 inch bags. </td>
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<td>Varies by need. For example, one version available comes in 11x48, 11x96, and 19x28 inch bags</td>
 
<td>Bags are high quality woven polymer material with high UV rating, gravel</td>
 
<td>Bags are high quality woven polymer material with high UV rating, gravel</td>
 
<td>In front of or around existing catch basin inlets</td>
 
<td>In front of or around existing catch basin inlets</td>
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</tr>
 
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<tr>
<td>Filtration berm</td>
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<td>[http://prj.geosyntec.com/npsmanual/filterberm.aspx Filtration berm]</td>
 
<td></td>
 
<td></td>
 
<td>1 cfs per 8 linear ft</td>
 
<td>1 cfs per 8 linear ft</td>
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</tr>
 
</tr>
 
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<tr>
<td>SiltSoxx R by Filtrexx</td>
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<td>[https://www.filtrexx.com/en/products/siltsoxx SiltSoxx R by Filtrexx]</td>
 
<td>Varies by application</td>
 
<td>Varies by application</td>
 
<td>Varies by application</td>
 
<td>Varies by application</td>
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<td>Filtrexx Media in Filtrexx Mesh</td>
 
<td>Filtrexx Media in Filtrexx Mesh</td>
 
<td>Existing inlets, site perimeters, paved surfaces, compacted soils, exposed slopes</td>
 
<td>Existing inlets, site perimeters, paved surfaces, compacted soils, exposed slopes</td>
<td>Compacted or susceptible to erosion </td>
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<td>Compacted or susceptible to erosion</td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td>StormExx R by Filtrexx</td>
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<td>[https://www.filtrexx.com/application/files/8315/2632/4158/Filtrexx_StormExx_CLEAN_Specification.pdf Shorex R by Filtrexx]</td>
 
<td>Same as catch basin</td>
 
<td>Same as catch basin</td>
 
<td>15-40 gpm</td>
 
<td>15-40 gpm</td>
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</table>
 
</table>
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<noinclude>
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[[Category:Level 3 - Best management practices/Pretreatment practices/Tables]]
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[[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Filtration practices]]
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[[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Pretreatment]]
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</noinclude>

Latest revision as of 19:05, 3 August 2022

Filtration - system design information
Link to this table

Device Drainage area Entrance/exit velocity Drain down/detention time Dimensions Materials Layout Recommendations (physical location, off-line placement) Soils
Pretreatment vegetated filter strip (VFS) < a few acres, max flow path 75-150 ft depending on perviousness, slope of drainage area <5% [1]; [2] <1 ft/s, flow should be sheet flow and unconcentrated [3] Maximum 72 hours [4] VFS width (parallel to sheet flow) = 25-100 ft depending on vegetation, slope and drainage area soil [5]; [6] Soil, grass [7] Residential lawns, parking lots, part of riparian buffer [8] Hydrologic Soil Groups A-D permitted, table for corresponding slopes [9]
Level-Spreader - Vegetative Filter Strip System (LS-VFS) < a few acres [10] <=10cfs [11] Maximum 72 hours [12] LS width (parallel to sheet flow) = 10-100 ft, VFS width >= 30-50 ft [13] Concrete, soil, grass [14] Distance from surface waters: LS and VFS must be outside riparian buffer, LS must be outside stormwater setbacks [15] VFS max slope = 8% [16]
Up-Flo Filter 0.66 acres impervious drainage area per filter module based on Nashville design storm 0.056 cfs per filter module (max number of modules 6-54) Round manhole: 4 ft diameter, 7.5 ft high Rectangular vaults: 6 ft x 8 ft x 6.5 ft to 15 ft x 13 ft x 6.5 ft Roads, carparks, commercial properties, airports, offline and online treatment of existing storm drains
Storm Clean Filtration flow rates (nominal/max)= 40/80 gpm, Strainer flow rate >= 100 gpm Filtration surface area (fabric elements) = 6.4 sq ft, Strainer surface area = 4.8 sq ft Stainless steel Can be fit into existing catch basin, curb inlet, drop inlet, or downspout
Gravel filtration Same as inlet gravel bags are placed around Varies by need. For example, one version available comes in 11x48, 11x96, and 19x28 inch bags Bags are high quality woven polymer material with high UV rating, gravel In front of or around existing catch basin inlets
Filtration berm 1 cfs per 8 linear ft Berm height = 12-18 inches high with 3:1 side slopes, every 100-300 feet depending on slope Washed, well-graded gravel/rock ¾ to 3 inches in size with <5% fines Right-of-ways, traffic areas, construction sites No restriction
SiltSoxx R by Filtrexx Varies by application Varies by application Available in 5 in to 32 in diameter depending on application, up to 200 ft in length Filtrexx Media in Filtrexx Mesh Existing inlets, site perimeters, paved surfaces, compacted soils, exposed slopes Compacted or susceptible to erosion
Shorex R by Filtrexx Same as catch basin 15-40 gpm 15-gallon storage, fits any existing storm drain Stainless steel or HDPE, EnviroSoxx filtering media cartridge Existing inlet

This page was last edited on 3 August 2022, at 19:05.