CCP 09-10-2001 - Laserfiche WebLink

Home Browse Search

I I , 41 I I I, I Extended Detention Pond Design 1 0 ~ 0 ~ e 0 Moderate Design 2 . e 0 e G 0 Moderate Wet Pond Design 3 . G 0 e 0 0 High Design 4 0 e ~ ~ ~ 0 Moderate Design 5 0 e ~ ~ ~ 0 Moderate Design 6 . ~ e e 0 0 High Infiltration Trench Design 7 0 e e ~ 0 0 Moderate Key Design 8 . e e ~ . 0 High Gl 0 to 20% Removal Design 9 . 0 ~ . . . High o 20 to 40% Removal InfIltration Basin e 40 to 60% Removal Design 7 0 e e G e ~ Moderate o 60 to 80% Removal Design 8 . e e 0 . ~ High . 80 to 100% Removal Design 9 . ~ 0 . . . High o Insufficient Knowledg Porous Pavement Design 7 e ~ e G e 0 Moderate Design 8 . ~ G 0 . . High Design 9 . ~ 0 . . . High Water Quality Inlet Design 10 0 0 0 0 0 0 Low Futer Strip Design II ~ 0 0 0 ~ 0 Low Design 12 . e e Ell . 0 Moderate Grassed Swale Design 13 0 0 0 0 0 0 Low Design 14 ~ ~ 0 ~ 0 0 Low Design I: F'1rSl,flush runoff volume detained for Design 7: Facility exfitrates fust-flush; 05 inch 6-12 hours. nmoff/impervious acre. D<sign 2: Runoff volume produced by 1.0 inch, Design 8: Facility exfiltrates one inch runoff volume per detained 24 hours. impervious acre. Design3: As in Design 2, but with shallow marsh in Design 9: Facility exfiltrates all runoff, up to the 2 year bottom stage. design storm. Design 4: Pennanent pool equal to 05 inch storage Design 10: 400 cubic feet wet storage per impervious acre. per imercious acre. Design 11: 20 foot wide turf strip. D<sign 5: Permanent pool equal to 25 (Vr); where Design 12: 100 foot wide forested strip, with level spreader. Vr: mean storm runoff. Design 13: High slope swales, with no check dams. Design 6: Pennanent pool equal to 4.0 (Vr); approx. Design 14: Low gradient swales with check dams. 2 weeks retention. Figure. 16: Comparative Pollutant Removal Of Urban BMP nes"igns S()urc~: Thomas R.Schueler, Controlling Urban Runoff: A Practkal MatW4l for PkwUng and Duigning Urban. BMPs. (Metropolitan Washington Council of Governments, July, 1987) p. 16. I I II I I I I I I I , I