Table 3. ANOVA result for TPH and THC loss for the quadratic model.

	21 Days Cocktail Treatment						56 Days Cocktail Treatment
Terms	TPH Removal			THC Removal			TPH Removal			THC Removal
	F-value	p-value	Coefficient Estimate	F-value	p-value	Coefficient Estimate	F-value	p-value	Coefficient Estimate	F-value	p-value	Coefficient Estimate
Intercept			89.64			88.97			96.28			96.69
Model	10.87	0.009	significant	6.06	0.0307	significant	19.82	0.0021	significant	6.32	0.0281	significant
A-Nitrate	2.17	0.201	1.42	2.62	0.1666	2.44	68.73	0.0004	3.08	5.41	0.0676	1.55
B-Phosphate	3.74	0.111	1.87	4.33	0.0919	3.14	0.5058	0.5088	-0.2643	10.53	0.0228	2.16
C-Inoculum size	16.37	0.01	3.91	18.22	0.008	6.43	20.84	0.006	1.7	2.57	0.1698	1.07
AB	6.25	0.055	-3.42	4.17	0.0967	-4.35	0.0996	0.7651	-0.1659	5.84	0.0604	-2.28
AC	7.79	0.038	-3.82	7.41	0.0416	-5.8	3.04	0.1416	-0.9168	0.0609	0.8149	-0.2326
BC	2.21	0.198	2.03	1.5	0.2759	2.6	0.0451	0.8402	0.1116	3.07	0.14	1.65
A²	17.73	0.008	-5.99	4.67	0.0831	-4.79	41.16	0.0014	-3.51	2.59	0.1684	-1.58
B²	30.5	0.003	-7.86	8.3	0.0345	-6.39	43.69	0.0012	-3.62	10.88	0.0215	-3.24
C²	19.98	0.007	-6.36	5.81	0.0608	-5.35	11.77	0.0186	-1.88	19.44	0.007	-4.33

THC = Total Hydrocarbon Content; TPH = Total Petroleum Hydrocarbon