Table 6: Comparison of median and mean spill volumes from smaller (10" and 12") versus larger (18" and 24") trunk pipelines, 22 counties of subject area.

Pipeline Diameter

Median

Mean

10" & 12" (N=24)

120 bbls.

760 bbls.

18" & 24" (N= 9)

1,100 bbls.

3,670 bbls.