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Summary of BMP Construction Costs from Estimator Models
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BMP	Construction cost converted to 2010 💲 USEPA (1999) per ft3 of treated water volume	Construction cost converted to 2010 💲 per ft3 of treated water volume	C = Cost(💲) (2003) X = size of watershed(acre)
Constructed Wetlands	0.80-1.70	0.20-2.40	C = 3,852X0.484
Wet Detention Basins	0.70-1.40	0.30-3.70	C = 13,909X0.672
Infiltration Trenches	5.40	6.50-11.50	Not reported
Bioretention Basins	7.20	10.10-11.30	C = 10,162X1.088
Infiltration Basins	1.80	Not reported	Not reported
Dry Ponds	0.70-1.40	0.30-5.00	Not reported
Sand Filters	4.10-8.20	3.40-16.80	C = 47,888X0.882