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BMP Selection Chapter 2
Table 2-2. BMP Effluent EMCs (Source: International Stormwater BMP Database, August
Solids and Nutrients (milligrams/liter)
BMP Category
Bioretention
(w/Underdrain)
Grass Buffer
Grass Swale
Detention Basin
(aboveground
extended det.)
Media Filters
(various types)
Retention Pond
(aboveground
wet pond)
Wetland Basin
Permeable
Pavement**
Sample Type
Inflow
Outflow
Inflow
Outflow
Inflow
Outflow
Inflow
Outflow
Inflow
Outflow
Inflow
Outflow
Inflow
Outflow
Inflow
Outflow
Total
Suspended
Solids
Total
Dissolved
Solids
Nitrogen,
Total
Total Kjeldahl
Nitrogen (TKN)
Nitrogen,
Ammonia as N
Nitrogen, Nitrate
(NO3) as N*
Nitrogen, Nitrite
(NO2) + Nitrate
(NO3) as N*
Phosphorus as
P, Total
Phosphorus,
Orthophosphate as
P
44.6 NC 1.46 1.22 0.19 NC 0.30 0.13 0.04
(41.8-53.3, n= 6) (1.24-1.63, n= 7) (1.00-1.33, n= 8) (0.16-0.23, n= 8) (0.25-0.38, n= 10) (0.12-0.17, n= 12) (0.01-0.10, n= 7)
12.9 NC 1.15 0.94 0.06 NC 0.21 0.13 0.06
(6.8-17.3, n= 6) (0.92-2.98, n= 7) (0.60-2.09, n= 8) (0.05-0.38, n= 8) (0.14-0.29, n= 10) (0.08-0.19, n= 12) (0.03-0.33, n= 7)
52.3 57.5 NC 1.40 0.38 0.44 NC 0.18 0.04
(50.0-63.3, n= 14) (32.0-89.3, n= 12) (1.15-2.10, n= 13) (0.23-0.64, n= 10) (0.42-0.92, n= 13) (0.09-0.25, n= 14) (0.03-0.06, n= 10)
22.3 88.0 NC 1.20 0.25 0.33 NC 0.30 0.10
(15.0-28.3, n= 14) (73.3-110.0, n= 12) (0.95-1.50, n= 13) (0.13-0.36, n= 9) (0.23-0.78, n= 13) (0.11-0.56, n= 14) (0.05-0.29, n= 10)
54.5 79.5 NC 1.83 0.06 0.41 0.25 0.22 0.04
(30.5-76.5, n= 15) (64.2-100.1, n= 12) (1.40-2.11, n= 12) (0.02-0.09, n= 4) (0.23-0.78, n= 12) (0.19-0.37, n= 4) (0.13-0.29, n= 15) (0.03-0.04, n= 3)
18.0 71.0 0.60 1.23 0.05 0.29 0.22 0.23 0.10
(8.9-39.5, n= 19) (34.9-85.0, n= 10) (0.55-1.34, n= 6) (0.41-1.48, n= 16) (0.03-0.06, n= 8) (0.21-0.66, n= 15) (0.18-0.31, n= 8) (0.19-0.31, n= 19) (0.08-0.12, n= 7)
59.5 88.5 1.05 1.32 0.08 0.45 0.23 0.20 NC
(17.8-83.8, n= 18) (85.0-98.8, n= 6) (1.04-1.25, n= 3) (0.77-1.70, n= 10) (0.04-0.10, n= 5) (0.30-0.90, n= 8) (0.17-0.50, n= 5) (0.18-0.30, n= 17)
22.0 85.0 2.54 1.66 0.09 0.40 0.17 0.20 NC
(11.6-28.5, n= 20) (54.3-113.5, n= 6) (1.7-2.69, n= 3) (0.86-1.95, n= 10) (0.07-0.10, n= 5) (0.27-0.85, n= 8) (0.08-0.43, n= 6) (0.13-0.26, n= 18)
44.0 42.0 1.51 1.53 0.34 0.38 0.33 0.20 0.02
(32.0-75.0, n= 21) (28.4-59.0, n= 13) (0.73-1.80, n= 5) (0.87-2.00, n= 17) (0.08-1.12, n= 11) (0.23-0.57, n= 16) (0.23-0.51, n= 6) (0.13-0.33, n= 21) (0.02-0.06, n= 7)
8.0 55.0 0.63 0.80 0.11 0.66 0.43 0.11 0.02
(5.0-17.0, n= 21) (46.0-62.0, n= 13) (0.43-1.41, n= 4) (0.50-1.22, n= 17) (0.04-0.15, n= 10) (0.39-0.73, n= 16) (0.05-1.00, n= 5) (0.06-0.15, n= 21) (0.02-0.06, n= 7)
44.5 89.0 1.71 1.18 0.09 0.43 0.27 0.23 0.09
(24.0-88.3, n= 40) (59.3-127.5, n= 9) (1.07-2.36, n= 19) (0.77-1.42, n= 28) (0.04-0.15, n= 23) (0.32-0.69, n= 15) (0.11-0.55, n= 24) (0.14-0.39, n= 38) (0.07-0.21, n= 26)
12.1 151.3 1.31 0.99 0.07 0.19 0.05 0.11 0.05
(7.9-19.7, n= 40) (70.8-182.0, n= 9) (1.01-1.54, n= 19) (0.76-1.29, n= 30) (0.04-0.17, n= 24) (0.13-0.26, n= 15) (0.02-0.20, n= 24) (0.07-0.19, n= 40) (0.02-0.08, n= 27)
39.6 NA 1.54 1.10 0.10 0.32 0.46 0.12 0.04
(24.0-56.8, n= 14) (1.07-2.16, n= 6) (0.77-1.30, n= 4) (0.04-0.13, n= 8) (0.32-0.44, n= 5) (0.11-0.63, n= 7) (0.14-0.27, n= 11) (0.07-0.13, n= 5)
12.0 NC 1.16 1.00 0.06 0.12 0.17 0.08 0.06
(8.5-17.5, n= 16) (0.98-1.39, n= 6) (0.90-1.14, n= 8) (0.04-0.10, n= 8) (0.10-0.16, n= 7) (0.05-0.34, n= 7) (0.05-0.14, n= 13) (0.02-0.25, n= 7)
23.5 NA NC 2.40 NC NC 0.59 0.12 NC
(16.0-45.3, n = 5) (1.80-3.30, n = 3) (0.27-0.80, n = 5) (0.10-0.13, n = 5)
29.1 NA NC 1.05 NC NC 1.24 0.13 NC
(16.3-34.0, n = 7) (0.90-1.33, n = 7) (1.21-1.39, n = 4) (0.10-0.19, n = 5)
*Some BMP studies include analyses for both NO2/NO3 and NO3; therefore, these analytes are reported separately, even though results are expected to be comparable in stormwater runoff.
Table Notes provided below part 2 of this table.
2-6 Urban Drainage and Flood Control District August 2011
Urban Storm Drainage Criteria Manual Volume 3