Table 1.

Mean bulk densities at a depth of approximately 2 to 5 in. (5 to 13 cm), within 6 in. (15 cm) of the Terravent probe and from an adjacent, undisturbed area 28 in. (71 cm) from the probe, compared with a twotailed T-test. Six samples were collected at each site.

Site	Mean bulk density (g/cc)				T-test (P)
	Sample distance from probe				T-test (P)
	6 in.	Std. dev.	28 in.	Std. dev.	Significance^*
Hilltop	1.46	.126	1.43	.084	0.78
Track	1.53	.075	1.56	.048	0.38
Ball Field	1.63	.138	1.60	.153	0.77

↵*Differences between means with P < 0.05 are considered significant. No values were in this range.