Table 2.

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

IUPAC PCB Congener	Decrease in Spiked Unplanted System	Decrease in Spiked Planted System
3	22.2%	90.2%
4	5.4%	100.0%
6	6.6%	100.0%
8	12.5%	100.0%
12 *,13	23.6%	80.2%
15	38.8%	100.0%
16	19.7%	100.0%
17	11.3%	100.0%
18,*30	14.2%	100.0%
19	13.9%	100.0%
20,*28	27.5%	100.0%
21,*33	17.0%	98.9%
23	18.4%	81.5%
24	22.7%	100.0%
31	19.4%	100.0%
32	100.0%	100.0%
35	28.2%	70.9%
37	19.7%	87.9%
52	0.1%	14.8%
55	100.0%	100.0%
61*,70,74,76	33.5%	100.0%
66	6.7%	100.0%
77 (Spike)	2.8%	17.2%