The PVC mat penetration device, Well B6, is located at Station B6 beyond Sta. B5 in an area of mostly bulrush.

The following legend applies to the graph above:
Vertical lines "I" and "II" mark changes in the water level measurement device: before I - two measurements of water or slurry thickness made at this station in April and June during augering and penetration device installation; I - first measuring tape device used (2 measurements); II - final tape device with modified weight used. Blue line is height of water above the "solid" bottom; green line represents "top of mat" calculated from tape reading from solid bottom to pipe lip; brown line represents "bottom of mat" calculated as "top of mat" minus mat thickness.
Sta. GPS:
Date installed:
Pipe length:
Ext. above mat:
Mat thickness:
Under mat:

June 14, 2002

1.00 ft.
1.55 ft.
muck
DISCUSSION Further out on the mat along Transect B, the depth to solid bottom increases to nearly 4 feet. However, probes made to date suggest that a mud slurry, rather than water, lies beneath the vegetation mat. This well is located close to a small fiddlewood tree, and the roots of this plant could be influencing the nature of underlying material. This is certainly the case at Station B7, set too close to a large albizia tree.

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