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Runoff coefficient

If your facility does not have periodic measurements of stormwater releases of the chemical, but has submitted chemical-specific monitoring data in permit applications, then these data must be used to calculate the percent contribution from stormwater. Rates of flow can be estimated by multiplying the annual amount of rainfall by the land area of the facility and then multiplying that figure by the runoff coefficient. The runoff coefficient represents the fraction of rainfall that does not infiltrate into the ground but runs off as stormwater. The runoff coefficient is directly related to how the land in the drainage area is used. (See table below.)... [Pg.45]

Choose the most appropriate runoff coefficient for your site or calculate a weighted-average coefficient, which takes into account different types of land use at your facility ... [Pg.45]

Rainfall) x (land area) x (conversion factor) x (runoff coefficient) = stormwater runoff... [Pg.46]

Concentration of solute in effluent Concentration of solute in leachate Runoff coefficient Crop management factor Climate factor... [Pg.1149]

TABLE 5.2 Runoff Coefficients for Undeveloped Area Watershed Types... [Pg.115]

I = rainfall intensity for the storm duration in inches (or decimals of an inch) per hour, as shown in Exhibit 13-12 C = the runoff coefficient A = the area of sur ce to be drained in square feet... [Pg.301]

See other pages where Runoff coefficient is mentioned: [Pg.45]    [Pg.45]    [Pg.45]    [Pg.46]    [Pg.46]    [Pg.1134]    [Pg.34]    [Pg.38]    [Pg.39]    [Pg.45]    [Pg.45]    [Pg.45]    [Pg.46]    [Pg.46]    [Pg.286]    [Pg.165]    [Pg.114]    [Pg.115]    [Pg.119]    [Pg.147]    [Pg.543]    [Pg.549]    [Pg.553]    [Pg.558]   
See also in sourсe #XX -- [ Pg.45 ]

See also in sourсe #XX -- [ Pg.45 ]



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Runoff

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