TABLE 6.

Predictions of log₁₀ reduction of waterborne C. parvum oocysts in overland flow attributable to 1 meter of vegetated buffer strip filtration

Soil type and slope of vegetated buffer strip	Log10 reduction of C. parvum oocysts/m of buffer strip at bulk density (g/cm3) ofa:
	0.66	1.0	1.33	1.66
Silty clay loam
5% slope	2.2	2.0	1.8
10% slope	3.1	2.5	1.9
20% slope	2.7	2.4	2.1
Loam
5% slope		2.4	1.8
10% slope		2.9	1.9
20% slope		2.8	2.1
Sandy loam
5% slope			1.7	1.4
10% slope			1.7	1.0
20% slope			1.9	1.4

^aPredictions were calculated as log₁₀ [(mean number of total oocysts discharged from buffer in overland flow effluent, estimated from the linear mixed-effects regression model)/(3 × 10⁷ spiked oocysts)].