Table 2.

2009 PSU Results

			Results (PCR, Culture)
Location	Type	Distance from Release	Background	12 hrs	24 hrs	48 hrs	72 hrs
1	Subway	0 km	−	+,+	+,+	+,+	−
2	Outdoor	2.45 km	−	+, NG	+, NG	+,+	−
3	Outdoor	3.15 km	−	−	+,+	−	+, NG
4	Subway	3.45 km	−	−	+,+	−	−

Note. The number in the first column corresponds to the locations shown in Figure 2.+indicates the sample produced a PCR positive;−indicates it did not amplify. If the sample amplified, it was subsequently cultured. A second+indicates the culture was positive; NG indicates no growth of B. amyloliquefaciens–type colonies was observed.