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→BMP Components and Test Methods
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|[[Filter media|Filter bed surface]]
|[[Filter media|Filter bed surface]]
|Use an infiltrometer or permeameter to measure field saturated hydraulic conductivity (K<sub>S</sub>) in at least 3 locations for areas up to 500 m<sup>2</sup> and one additional location for each additional 500 m<sup>2</sup> of filter bed surface area, including inlet and lowest elevation areas. Compare mean and individual values to the design specification or trigger value (See Triggers for follow-up and corrective actions below) to determine if follow-up tasks are needed.)
|Use an infiltrometer or permeameter to measure field saturated hydraulic conductivity (K<sub>S</sub>) in at least 3 locations for areas up to 500 m<sup>2</sup> and one additional location for each additional 500 m<sup>2</sup> of filter bed surface area, or fraction thereof, including inlet and lowest elevation areas. Compare mean and individual values to the design specification or trigger value (See Triggers for follow-up and corrective actions below) to determine if follow-up tasks are needed.)
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|rowspan="2"|'''[[Permeable pavement]]'''
|rowspan="2"|'''[[Permeable pavement]]'''
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|[[Permeable pavement: Plan review|Pavement surface]]
|[[Permeable pavement: Plan review|Pavement surface]]
|Use a single-ring infiltrometer to measure field saturated hydraulic conductivity (K<sub>S</sub>) in at least 3 locations for areas up to 2,500 m<sup>2</sup> and one additional location for each additional 1,000 m<sup>2</sup> of pavement surface area, evenly distributed. For permeable interlocking pavers, follow the procedure provided by ASTM C1781_C1781M – 15 (ASTM International, 2015<ref>ASTM International. 2015. ASTM C1781/C1781M-15 - Standard Test Method For Surface Infiltration Rate Of Permeable Unit Pavement Systems. Accessed May 5 2022: https://webstore.ansi.org/Standards/ASTM/astmc1781c1781m15</ref>). For pervious concrete or porous asphalt, follow the procedure provided by ASTM C1701_C1701M – 09 (ASTM International, 2009<ref>ASTM International. 2009. ASTM C1701/C1701M-09 - Standard Test Method for Infiltration Rate of In Place Pervious Concrete. Accessed May 5 2022: https://www.astm.org/c1701_c1701m-09.html</ref>). Compare mean and individual values to the design specification or trigger value (See Triggers for follow-up and corrective actions below) to determine if follow-up tasks are needed.)
|Use a single-ring infiltrometer to measure field saturated hydraulic conductivity (K<sub>S</sub>) in at least 3 locations for areas up to 2,500 m<sup>2</sup> and one additional location for each additional 1,000 m<sup>2</sup> of pavement surface area, or fraction thereof, evenly distributed. For permeable interlocking pavers, follow the procedure provided by ASTM C1781_C1781M – 15 (ASTM International, 2015<ref>ASTM International. 2015. ASTM C1781/C1781M-15 - Standard Test Method For Surface Infiltration Rate Of Permeable Unit Pavement Systems. Accessed May 5 2022: https://webstore.ansi.org/Standards/ASTM/astmc1781c1781m15</ref>). For pervious concrete or porous asphalt, follow the procedure provided by ASTM C1701_C1701M – 09 (ASTM International, 2009<ref>ASTM International. 2009. ASTM C1701/C1701M-09 - Standard Test Method for Infiltration Rate of In Place Pervious Concrete. Accessed May 5 2022: https://www.astm.org/c1701_c1701m-09.html</ref>). Compare mean and individual values to the design specification or trigger value (See Triggers for follow-up and corrective actions below) to determine if follow-up tasks are needed.)
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