Difference between revisions of "Concentrations of contaminants found in stormwater"
m |
m |
||
| Line 1: | Line 1: | ||
| − | <Font size=3>'''Concentrations of contaminants found in stormwater. Source: International Stormwater Database Version 3 (Updated 2008).<br>'''</font size><br> | + | <Font size=3>'''Concentrations of contaminants found in stormwater. Source: International Stormwater Database Version 3 (Updated 2008).<sup>7</sup><br>'''</font size><br> |
Link to this [[Concentrations of contaminants found in stormwater|table]]. | Link to this [[Concentrations of contaminants found in stormwater|table]]. | ||
<table class="sortable"> | <table class="sortable"> | ||
| Line 521: | Line 521: | ||
<sup>4</sup>Data is for trans-1,3-Dichloropropene and bromomethane<br> | <sup>4</sup>Data is for trans-1,3-Dichloropropene and bromomethane<br> | ||
<sup>5</sup> Data was selected from states with a similar climate to MN. The appropriate states were determined using Figure 1.3 from the [http://vermont4evolution.files.wordpress.com/2011/12/ulm-elc_coldclimates.pdf Stormwater BMP Design Supplement for Cold Climates] document.<BR> | <sup>5</sup> Data was selected from states with a similar climate to MN. The appropriate states were determined using Figure 1.3 from the [http://vermont4evolution.files.wordpress.com/2011/12/ulm-elc_coldclimates.pdf Stormwater BMP Design Supplement for Cold Climates] document.<BR> | ||
| − | <sup>6</sup>BDL = below detection level</font size> | + | <sup>6</sup>BDL = below detection level<br> |
| + | <sup>7</sup>The following censoring techniques were used for this data: | ||
| + | *If detection rates were 90% or greater, a value of "0" was substituted for non-detects. | ||
| + | *If detection rates were greater than 50% but 90% or less, a value of 1/2 the detection limit was substituted for non-detects. | ||
| + | *If detection rates were 50% or less, the median was assumed to be below the method detection level.</font size> | ||
<noinclude> | <noinclude> | ||
[[category:Table - pollutant information]] | [[category:Table - pollutant information]] | ||
</noinclude> | </noinclude> | ||
Revision as of 14:16, 25 September 2015
Concentrations of contaminants found in stormwater. Source: International Stormwater Database Version 3 (Updated 2008).7
Link to this table.
| Land use | TSS 1 | NO2 + NO3 1 | TN 1 | TP 1 | Cl 1,5 | Cu 2 | Zn 2 | Ni 2 | Cd 2 | Cr 2 | CN 2,5 | Oil and grease 2 | VOCs 2,5 | Pesticides 2,4,5 | FC 3,5 | EC 3,5 | FS 3,5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Commercial | |||||||||||||||||
| Number of sites | 56 | 50 | 13 | 56 | -- | 60 | 62 | 40 | 51 | 38 | 2 | 44 | 4 | 1 | 4 | -- | 3 |
| Number of observations | 857 | 786 | 77 | 948 | -- | 785 | 867 | 291 | 543 | 294 | 6 | 394 | 160 | 6 | 19 | -- | 7 |
| % of samples above detection | 98.7 | 98.9 | 97.4 | 94.5 | -- | 85 | 99.2 | 51.5 | 38.1 | 52.0 | 0 | 65.5 | 65.5 | 0 | 73.7 | -- | 100 |
| Minimum | <0.5 | <0.1 | <1.5 | <0.01 | -- | <0.2 | <0.3 | <1 | <0.03 | <0.7 | n/a | <0.5 | <0.05 | n/a | <200 | -- | 310 |
| Maximum | 2385 | 8.2 | 18.1 | 4.27 | -- | 569.1 | 3050.5 | 110 | 80 | 100 | n/a | 359 | n/a | 28000 | -- | 24000 | |
| Median | 52 | 0.6 | 1.75 | 0.2 | -- | 17 | 110 | 8 | BDL6 | 4 | BDL | 5 | 0.7 | n/a | 450 | -- | 3100 |
| Industrial | |||||||||||||||||
| Number of sites | 58 | 51 | 13 | 57 | 1 | 65 | 67 | 43 | 60 | 42 | 2 | 48 | 3 | -- | 6 | -- | 4 |
| Number of observations | 619 | 536 | 85 | 638 | 10 | 569 | 627 | 300 | 525 | 312 | 9 | 370 | 144 | -- | 32 | -- | 12 |
| % samples above detection | 99.5 | 97.0 | 95.3 | 95.1 | 50.0 | 85.1 | 98.9 | 58.0 | 48.6 | 72.4 | 0 | 59.7 | 10.4 | -- | 90.6 | -- | 91.7 |
| Minimum | <1 | <0.02 | <1.5 | <0.02 | <2 | <0.2 | <0.5 | <2 | <0.03 | <0.7 | n/a | <0.5 | <0.05 | -- | <1 | -- | <1 |
| Maximum | 2490 | 8.4 | 15.2 | 7.9 | 7.8 | 1360 | 8100 | 120 | 334 | 150 | n/a | 408 | -- | 3600000 | -- | 48000 | |
| Median | 75 | 0.68 | 1.7 | 0.23 | 6 | 19 | 155 | 10 | BDL | 10 | BDL | 5 | BDL | -- | 3950 | -- | 24000 |
| Residential | |||||||||||||||||
| Number of sites | 146 | 127 | 20 | 148 | 2 | 147 | 151 | 77 | 114 | 72 | -- | 95 | 7 | 1 | 10 | 3 | 4 |
| Number of observations | 2257 | 1772 | 131 | 2380 | 19 | 1743 | 2013 | 418 | 1123 | 408 | -- | 694 | 210 | 6 | 94 | 19 | 23 |
| % of sample above detection | 99.9 | 99.0 | 98.5 | 98.2 | 26.3 | 86.5 | 97.0 | 42.2 | 40.4 | 48.8 | -- | 56.8 | 20.1 | 0 | 85.9 | 100 | 95.7 |
| Minimum | <0.5 | <0.03 | <1.5 | <0.01 | <2 | <0.2 | <0.5 | <0.5 | <0.03 | <0.7 | -- | <0.5 | <0.05 | n/a | <1 | 10 | <1 |
| Maximum | 4168 | 66.4 | 18.3 | 19.90 | 18.3 | 590 | 14700 | 100 | 70 | 70 | -- | 419 | 3.42 | n/a | 5230000 | 35000 | 200000 |
| Median | 58 | 0.60 | 2.24 | 0.26 | 5.5 | 11 | 69.9 | 5 | BDL | 3 | -- | 4 | BDL | BDL | 9400 | 1000 | 23500 |
| Open space | |||||||||||||||||
| Number of sites | 15 | 13 | 4 | 15 | -- | 12 | 12 | 9 | 8 | 7 | 3 | 9 | 1 | -- | 2 | 1 | -- |
| Number of observations | 105 | 109 | 13 | 111 | -- | 44 | 49 | 38 | 41 | 36 | 13 | 26 | 5 | -- | 6 | 5 | -- |
| % of samples above detection | 97.1 | 92.7 | 92.3 | 93.7 | -- | 64.4 | 65.3 | 23.1 | 39.0 | 36.1 | 15.4 | 34.6 | 60.0 | -- | 100 | 100 | -- |
| Minimum | <1 | <0.1 | <0.5 | <0.01 | -- | <0.8 | <5 | <2 | <0.04 | <0.7 | <0.01 | <1 | <0.2 | -- | 1900 | 100 | -- |
| Maximum | 4168 | 3.4 | 3.3 | 0.76 | -- | 210 | 390 | 100 | 8 | 120 | 0.08 | 11 | 0.84 | -- | 63000 | 4700 | -- |
| Median | 58 | 0.5 | 1.1 | 0.129 | -- | 6 | 25 | BDL | BDL | BDL | BDL | BDL | 0.77 | -- | 2150 | 1100 | -- |
TSS=total suspended solids, NO2=nitrite, NO3=nitrate, TN=total nitrogen, Cl=chloride, Cu=copper, Zn=zinc, Ni=nickel, Cd=cadmium, Cr=chromium, CN=cyanide, VOC=volatile organic compound, FC=fecal coliform, EC=E. coli, FS=fecal streptococci
1 Concentrations are in milligrams per liter
2 Concentrations are in micrograms per liter
3 Concentrations are in
4Data is for trans-1,3-Dichloropropene and bromomethane
5 Data was selected from states with a similar climate to MN. The appropriate states were determined using Figure 1.3 from the Stormwater BMP Design Supplement for Cold Climates document.
6BDL = below detection level
7The following censoring techniques were used for this data:
- If detection rates were 90% or greater, a value of "0" was substituted for non-detects.
- If detection rates were greater than 50% but 90% or less, a value of 1/2 the detection limit was substituted for non-detects.
- If detection rates were 50% or less, the median was assumed to be below the method detection level.