Table L‐2: BMP Summary Matrix
A
B
C
D
E
F
G
Standard 2
1
2
BMP Type
Best Management Practice
3
4 Source Control and Non‐Structural BMPs
Street Sweeping
5
6
Semi‐annual Catch Basin Cleaning11
7
No Application of Fertilizers Containing Phosphorus12
No sand zone for deicing
8
Designate as Low Salt Zone
9
Illicit Discharge Review
10
Review of bird habitat impacts
11
12 Structural Pretreatment BMPs
Deep Sump Catch Basin
13
Oil Grit Separator
14
Proprietary Separator
15
Sediment Forebay
16
Vegetated Filter Strip
17
Open Graded Friction Course
18
19 Treatment BMPs
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
6/8/2010
Handbok Reference
DEP
J
K
Standard 4
L
Standard 5
M
Standard 6
N
Standard 7
O
P
Q
R
Discharges to or Higher Pollutant Re‐
near Critical Loading
development
Areas
8
Recharge
2‐Yr Storm
10‐Yr Storm
100‐Yr Storm
Applicability
MassDEP Removal Credit9, 10
n/a
n/a
n/a
●
●
0% ‐ 10% Varies w/frequency
Total Nitrogen
Total Phosphorous
Metals (Cu, Pb, Zn, Cd)
Pathogens
Insufficient Data
20%
10%
Insufficient Data
Insufficient Data
●
●
●
○
●
●
●
25%
25%
Varies
25%
10% ‐ 45% (Width 25' ‐ 50')
●
●
○
○
○
no
no
Varies
no
no
no
MassDOT (DEP)
yes
Extended Dry Detention Basin
Wet Basin
Constructed Wetlands
MassDOT (DEP)
MassDOT (DEP)
yes
yes
●
●
●
●
Constructed Stormwater Wetland
Gravel Wetland
Filtration BMPs
MassDOT (DEP)
MassDOT (DEP)
yes
yes
●
●
●
●
MassDOT (DEP)
MassDOT
MassDOT
yes
Varies
no
no
MassDOT (DEP)
MassDOT (DEP)
yes
yes
MassDOT (DEP)
MassDOT (DEP)
yes
yes
○
○
○
○
MassDOT (DEP)
MassDOT (DEP)
MassDOT (DEP)
MassDOT (DEP)
MassDOT (DEP)
no
yes
yes
yes
yes
○
○ ○ ○ 1
○ ○ ○
○ MassDOT (DEP)
DEP
MassDOT (DEP)
DEP
MassDOT
no
no
no
no
no
●
●
●
DEP
MassDOT (DEP)
DEP
DEP
MassDOT
n/a
n/a
n/a
n/a
n/a
MassDOT
n/a
○
○
●
●
●
●
●
○
●
○
●
90% with vegetated filter strip or equivalent
○
○
●
●
50% w/sediment forebay
80% w/sediment forebay
○
○
● ●
●
80% w/sediment forebay
80% w/sediment forebay
○
○
● ● ●
●
●
●
80% w/sediment forebay
Varies
●
●
80%10
80%10
●
●
●
●
●
●
● 3
● 4
○
○ 5
○ ●
●
10% ‐ 90%
10% ‐ 90%
● 6, 5
●5
●5
●5
●5
● 6
○
●
●
●
50% ‐ 60%
60% ‐ 70%
85% ‐ 90%
0.9
40% ‐ 70%
40% ‐ 70%
85% ‐ 90%
≤ 90%
MassDOT assumes comparable to inflitration trench
MassDOT assumes comparable to inflitration trench
○
5% ‐ 50%
44%10
Insufficient Data
●
Insufficient Data
●
Requires product‐specific evaluation ‐ see discussion in Section 5.0
Insufficient Data
Insufficient Data
●
Insufficient Data
●
●
30% ‐ 50%
30% ‐ 90%
40% ‐ 90%
Insufficient Data
●
15% ‐ 50%
10% ‐ 50%
10% ‐ 30%
30% ‐ 70%
30% ‐ 50%
30% ‐ 75%
< 10%
40% ‐ 90%
●
●
20% ‐ 55%
20% ‐ 55%
40% ‐ 60%
40% ‐ 60%
20% ‐ 85%
20% ‐ 85%
≤ 75%
≤ 75%
Stormwater Treatment Basins
Sand or Organic Filter
Proprietary Media Filter
Media Filter Drain
Compost Amended Vegetated Filter Strip
Conveyance BMPs
Drainage Channel
Grassed Channel (Biofilter Swale)
Water Quality Swale
Dry Swale
Wet Swale
Infiltration BMPs
Dry Well
Infiltration Basin
Infiltration Trench
Leaching Catch Basin/Leaching Basin
Subsurface Structure
Other BMPs
Dry Detention Basin
Green Roof7
Porous Pavement
Rain Barrel/Cistern7
Outlet Sediment Trap
Accessories
Level Spreader
Check Dam
Outlet Structure
Catch Basin Insert
Flow Splitter
Impoundment Structures: Suggested Design Considerations for Small Dams
Legend
●
○
Applicable
May be applicable with careful design
Selection Priority for MassDOT Applications
●
Strongly recommended for treatment of Pollutant of Concern (POC)
●
Recommended for treatment of POC
Recommended with caution for treatment of POC
●
Site specific evaluation required
●
○
○
○
●
●
●
●
●
●
●
0%
50% w/pretreatment
●
●
70% w/pretreatment
70% w/pretreatment
●
●
●
●
●
80%
80% w/pretreatment
80% w/pretreatment
80% if offline w/pretreatment
80%
●
●
●
●
○
●
●
●
●
0%
n/a
80%
n/a
○
25%12
●
●
Varies
Varies
○
●
●
20% ‐ 40%
10% ‐ 50%
50% ‐ 90%
Requires product and media‐specific evaluation ‐ see discussion in Section 5.0
Insufficient data
Insufficient data
‐121%
65% ‐ 85%12
75% ‐ 85%12
85% ‐ 90%12
80% ‐ 90%12
Notes:
With careful design for small sites
Not suitable for areas near cold water fisheries
May be used to reduce temperatures of runoff Not suitable for vernal pools or bathing beaches; may be used as pretreatment for other critical 5
6
7
8
9
10
11
12
Insufficient Data
Insufficient Data
Insufficient Data
Insufficient Data
Insufficient Data
Insufficient Data
Insufficient Data
20% ‐ 90%
20% ‐ 90%
Insufficient Data
●
●
●
10% ‐ 30%
30% ‐ 50%
n/a
Insufficient Data
n/a
Insufficient Data
n/a
n/a
n/a
Requires product and media‐specific evaluation ‐ see discussion in Section 5.0
n/a
n/a
1
2
3
4
S
Pollutant Removal Efficiencies ‐ MassDEP Stormwater Handbook11
TSS Removal
MassDOT (DEP)
MassDOT (DEP)
DEP
MassDOT (DEP)
MassDOT (DEP)
MassDOT
Bioretention Area/Rain Garden
I
Standard 3
Peak Discharge Rate Control
Pretreatment Required?
n/a
H
Recommended for cold‐water fisheries
May only be used for runoff from nonmetal roofs within Zone II or IWPA
Not applicable for roadways
Additional pretreatment may be required under certain design conditions; see DEP Handbook Volume 1, Chapter 1, Table RR
See Table 5‐2 for Pollutant Removals from EPA Performance Analysis
Removal rates for selected BMPs estimated by MassDOT
Removal Rates based on Residual Designation App. D ‐ only for areas not treated by other BMPs
Removal Rates based on Residual Designation App. D ‐ applicable to entire developed area with no phosphorus fertilizer applied
< 10%
T
U
Other Pollutants of Concern
pH
Thermal modifications/ Temperature
Chloride
Table L‐3: Design BMP Pollutant Removal Rates
BMP Type
Best Management Practice
Street Sweeping
Structural Pretreatment BMPs
Deep Sump Catch Basin
Oil Grit Separator
Proprietary Separator
Sediment Forebay
Vegetated Filter Strip
Open Graded Friction Course
Treatment BMPs
Bioretention Area/Rain Garden
Stormwater Treatment Basins
Extended Dry Detention Basin
Wet Basin
Constructed Wetlands
Constructed Stormwater Wetland
Gravel Wetland
Filtration BMPs
Sand or Organic Filter
Proprietary Media Filter
Media Filter Drain
Compost Amended Vegetated Filter Strip
Conveyance BMPs
Drainage Channel
Grassed Channel (Biofilter Swale)
Water Quality Swale
Dry Swale
Wet Swale
Infiltration BMPs
Dry Well
Infiltration Basin
Infiltration Trench
Leaching Catch Basin/Leaching Basin
Subsurface Structure
Other BMPs
Dry Detention Basin
Green Roof
Porous Pavement4
Rain Barrel/Cistern
Outlet Sediment Trap
Accessories
Level Spreader
Check Dam
Outlet Structure
Catch Basin Insert
Flow Splitter
Impoundment Structures: Suggested Design Considerations for Small Dams
Notes:
6/8/2010
Source of Criteria1
TSS
0.5 in. WQV
Pollutant Removal (%)2,3,5 TP
Zn
1.0 in 0.5 in. 1.0 in 0.5 in. 1.0 in WQV
WQV
WQV
WQV
WQV
TSS removal varies w/frequency
MassDEP
0‐10 MassDEP
MassDEP
MassDEP
MassDEP
MassDEP
MassDOT
25
25
25
10‐45
44
USEPA
95
99
58.5
76
95.5
97
USEPA
USEPA
39
64
46
77
8.5
9.5
12
18
68.5
82.5
73
89
MassDEP
USEPA
80
86.5
80
97
40‐60
46
40‐60
61
20‐85
85.5
20‐85
90
MassDEP
MassDEP
MassDOT
MassDOT
80
80
80
MassDEP
MassDEP
0
50
0
50
USEPA
65.5
65.5
80
80
MassDEP
USEPA
80
95.5
96
97
97.5
99
100
89.5
92.5
94.5
96
98.5
100
80
Insufficient Data
100
76.5
92
97
100
79
93
98
100
82
95
98.5
100
85.5
97
99.5
100
90.5
98
100
100
97.5
100
100
99
65
89
96
100
70
91
98
100
74.5
94
98.5
100
78.5
96
99.5
100
86
98
100
100
96
100
100
assumed similar to infiltration trench
assumed similar to infiltration trench
USEPA
MassDEP
MassDEP
USEPA
MassDEP
MassDOT
0
0‐10
Remarks
Insufficient Data
25
Insufficient Data
25
Insufficient Data
Requires product‐specific evaluation
25
Insufficient Data
10‐45
Insufficient Data
44
Insufficient Data
80
10‐50
10‐50
50‐90
50‐90
Requires product and media‐specific evaluation
80
65‐85
65‐85
85‐90
85‐90
80
75‐85
75‐85
80‐90
80‐90
0
Insufficient Data
Insufficient Data
11
11
21
21
10‐30
88.5
88.5
95
95
100
100
100
100
100
100
99
100
100
100
100
100
10‐30
30‐50
30‐50
62
69
74
78
85
97
97
98
85
97
97
98
0.17 in/hr. infiltration rate
0.27 in/hr. infiltration rate
0.52 in/hr. infiltration rate
1.02 in/hr. infiltration rate
2.41 in/hr. infiltration rate
8.27 in/hr. infiltration rate
0.17 in/hr. infiltration rate
0.27 in/hr. infiltration rate
0.52 in/hr. infiltration rate
1.02 in/hr. infiltration rate
2.41 in/hr. infiltration rate
8.27 in/hr. infiltration rate
n/a
92
94
96
97
92
94
96
97
25
25
62
69
74
78
12" filter course
18" filter course
24" filter course
32" filter course
n/a
Insufficient Data
n/a
MassDEP
Requires product and media‐specific evaluation
n/a
1 Performance data in this Table is derived from EPA (March 2010). Where this source does not provide performance data, information is taken from
MassDEP (Massachusetts Stormwater Handbook, 2008) or from MassDOT (Stormwater Handbook for Highways and Bridges, 2010).
2 For EPA performance data, the values listed assume highway surfaces are equivalent to "commercial land use" as used in the EPA Stormwater Best
Management Practices (BMP) Performance Study (Revised March 2010).
3 BMPs may be sized for treating other Water Quality Volumes than those listed. Refer to the EPA study for pollutant removal data for other Water Quality
Treatment Volumes.
4 Porous pavement performance analysis is based on depth of filter course, as this BMP treats all water that falls on it, not just the Water Quality Volume.
Performance ratings are therefore provided for a range of filter course depths.
5 For data on removal rates for nitrogen and pathogens, see Table 5‐2.
Table L‐4:
Conditions Affecting Selection of BMPs
Physical Feasibiliy Factors
Notes:
6/8/2010
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n/a
○
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n/a
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n/a
n/a
n/a
n/a
n/a
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n/a
●
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n/a
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○
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○
○
○
○
n/a
n/a
○
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n/a
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○
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n/a
1 Clearance to high water table or bedrock is measured from the bottom surface of the BMP. (e.g., bottom surface of wet pond, infiltration basin, of other basin; bottom of lowest storage layer for porous pavement, subsurface infiltration system). < 0 ft means water table may be higher than bottom surface of BMP
2 Consult Title 5 Regulations (310 CMR 15.00) for specific setback requirements. Not all provisions are reflected in this table. For example, dry wells may be no closer than 25 ft. to a soil absorption system; surface and subsurface drains that discharge to a surface water supply may be no closer than 100 feet.
3 Vegetated filters, media filter drains, and compost‐amended vegetative filter strips are not limited to a maximum drainage area, but are limited to maximum contributing lengths of flow. See discussion under the description for each of these BMPs.
●
○
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○
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n/a
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n/a
Legend
●
○
n/a
○
○
n/a
Applicable
May be applicable with careful design
Criteria not applicable
○
○
●
●
●
n/a
Low
Moderate
●
●
n/a
n/a
●
●
●
●
Significant
> 15%
6% to 15%
0 to 6%
Requires Large Land Area
Requires Small Land Area
> 10 ft
≤10 ft
> 50 ft
○
○
○
○
○
○
Maintenance Sensitivity
Slope
n/a
n/a
●
●
●
●
●
●
●
●
●
Property Line
●
●
●
○
○
○
○
●
●
●
Other Surface Waters
n/a
n/a
n/a
n/a
●
●
●
●
●
●
Land Area
≤ 50 ft
●
●
●
●
●
●
●
●
Public Reservoir
Within Zone A
●
●
●
●
●
●
●
●
Public Wells
Within Zone 1
●
●
n/a
n/a
> 100 ft
●
●
n/a
n/a
Private Wells
≤ 100 ft
○
○
●
●
●
Setback Requirements
> 50 ft
●
○
○
●
●
●
1 ≤ 50 ft
●
●
> 2 ft
●
●
Clearance
to Bedrock
0‐2 ft
●
●
> 2 ft
●
●
< 0 ft
0‐2 ft
50+
●
●
Clearance1 to High Water Table
Title 5 Soil Absorption System2
>2.41
20‐50
●
●
<0.17
10‐20
3
Vegetated Filter Strip
Open Graded Friction Course
Treatment BMPs
Bioretention Area/Rain Garden
Stormwater Treatment Basins
Extended Dry Detention Basin
Wet Basin
Constructed Wetlands
Constructed Stormwater Wetland
Gravel Wetland
Filtration BMPs
Sand or Organic Filter
Proprietary Media Filter
Media Filter Drain3
Compost Amended Vegetated Filter Strip3
Conveyance BMPs
Drainage Channel
Grassed Channel (Biofilter Swale)
Water Quality Swale
Dry Swale
Wet Swale
Infiltration BMPs
Dry Well
Infiltration Basin
Infiltration Trench
Leaching Catch Basin/Leaching Basin
Subsurface Structure
Other BMPs
Dry Detention Basin
Green Roof
Porous Pavement
Rain Barrel/Cistern
Outlet Sediment Trap
Accessories
Level Spreader
Check Dam
Outlet Structure
Catch Basin Insert
Flow Splitter
Impoundment Structures: Suggested Design Considerations for Small Dams
5‐10
Street Sweeping
Semi‐annual Catch Basin Cleaning
Structural Pretreatment BMPs
Deep Sump Catch Basin
Oil Grit Separator
Proprietary Separator
Sediment Forebay
1‐5
Best Management Practice
0‐1
BMP Type
>0.17 and <2.41
Soil Infiltration Capacity (inches per hour)
Drainage Area
(acres)
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