Table 1.

Reduction in “contaminant” PCB congeners in unspiked garden soil after 96 days.

IUPAC PCB Congener	Decrease in Unspiked Unplanted Control	Decrease in Unspiked Planted Control
3	10.1%	100.0%
4	11.7%	100.0%
6	7.3%	100.0%
8	23.5%	100.0%
12*,13	13.6%	100.0%
15	19.7%	100.0%
16	14.9%	100.0%
17	13.7%	100.0%
18,*30	24.4%	100.0%
19	15.7%	100.0%
20,*28	18.1%	100.0%
21,*33	24.4%	100.0%
23	16.1%	79.7%
24	28.0%	100.0%
31	17.3%	100.0%
32	100.0%	100.0%
35	41.1%	100.0%
37	31.0%	91.8%
52	0.1%	22.3%
55	100.0%	100.0%
61*,70,74,76	27.6%	100.0%
66	15.8%	100.0%