Table 3.

Time elapsed between B. thuringiensis subsp. kurstaki application and sample collection, number of sample pools for all matrices, pooled field blanks, and pooled lab duplicates analyzed for each area

Sampling location	Time elapsed	Total sample pools (n)	Field blank pools (n)
Fairfax County, VA, block 35
Background	NAa, prespray	137	6
	1 day	140	6
	6 wk	138	6
	12 wk	147	7
	24 wk	146	7
	48 wk	128	6
Seattle, WA
Seattle, control	NA (not sprayed)	89	8
Kent, 2007	10 mo	90	6
Madison, 2006	22 mo	94	8
Rosemont, 2006	22 mo	89	8
Eastlake, 2005	38 mo	128	7
Bellevue, 2004	50 mo	111	6

^aNA, not applicable.