Best Management Practices

Best Management Practices Information

EROSION CONTROL PRACTICES AND CONSTRUCTION PHASE BMPs

Practice No.	BMP Description	Applicability	Factsheet
1	Site Assessment	All sites	2
2	Construction Sequencing	All sites	CN - 101
3	Tree Preservation and Protection	Nearly all sites	1
4	Temporary Gravel Construction Entrance Pad	All sites	1
5	Wheel Wash	All sites	CN - 102
6	Silt Fence	Small drainage areas	1
7	Surface Roughening	Sites with slopes that are to be stabilized with vegetation	1
8	Temporary Seeding	Areas of bare soil where additional work is not scheduled to be performed for a minimum of 15 days	1
9	Mulching	Temporary surface stabilization	1
10	Erosion Control Blanket (Surface)	Temporary surface stabilization, anchor for mulch	1
11	Temporary Diversion	Up-slope and down-slope sides of construction site, above disturbed slopes within construction site	1
12	Rock Check Dam	2 acres maximum contributing drainage area	1
13	Temporary Slope Drain	Sites with cut or fill slopes	1
14	Straw Bale Dam	Small drainage areas	1
15	Fabric Drop Inlet Protection	1 acre maximum contributing drainage area	1
16	Basket Curb Inlet Protection	1 acre maximum contributing drainage area	1
17	Sandbag Curb Inlet Protection	1 acre maximum contributing drainage area	1
18	Temporary Sediment Trap	5 acre maximum contributing drainage area	1
19	Temporary Sediment Basin	30 acre maximum contributing drainage area	1
20	Dewatering Structure	Sites requiring dewatering	CN - 103
21	Dust Control	All sites	1
22	Spill Prevention and Control	All sites	CN - 104
23	Solid Waste Management	All sites	CN - 105
24	Hazardous Waste Management	All sites	CN - 106
Factsheet Location: 1. Indiana Handbook for Erosion Control in Developing Areas, 1992 or later 2. Indiana Drainage Handbook, 1999 or later

POST-CONSTRUCTION WATER QUALITY BMPs

BMP Description	Anticipated Average % TSS Removal Rate (E)
Bioretention (A)	75
Constructed Wetland	65
Underground Detention	70
Extended Dry Detention (B)	72
Infiltration Basin (A)	87
Infiltration Trench (A)	87
Media Filtration – Underground Sand	80
Media Filtration – Surface Sand	83
Storm Drain Insert (D)	NA (C)
Filter Strip	48
Vegetated Swale	60
Wet Detention	72
(A) Based on capture of 0.5-inch of runoff volume as best available data. Effectiveness directly related to captured runoff volume, increasing with larger capture volumes. (B) Test results are for three types of ponds: extended wet detention, wet pond and extended dry detention (C) NA may indicate that the BMP is not applicable for the pollutant, but may also indicate that the information is simply Not Available. Independent testing should be provided, rather than the manufacturer’s testing data. (D) Must provide vendor data for removal rates. (E) Removal rates are dependent on proper installation and maintenance.