07/15/2004 Env Bd Packet - Laserfiche WebLink

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• Basin ID: Basin B Page 4 of 4 Disturbance Factors Apparently a staging area for access to the Island. Fill/disturbance is evident along the upland access trail and as an apparent pad in the transition to the undisturbed wetland. The surface Is hummocky with obvious peat/mineral fill piles. Extreme evidence of subsidence in the area of the transition from disturbed upland to wetland. Occasional large voids (holes several inches in diameter) were observed when augering soli. Boxelder in obvious upland positions have exposed roots several inches above the current soil surface probably exposed by subsidence /consolidation /oxidation. Subsoils powdery-dry when examined. Floristic Features Disturbed area dominated by reed canary grass/stinging nettle. Reed camary grass/nettle area delineated as wetland. Transition zone contains large quantities of bucicthon both in the shrub and herb layers. Soil Factors Entire area near the access is probably filled /disturbed; however, some profiles looked native, others consisted of obvious fill. Soils were generally transitional variants between upland hayden /Dundas/Markey that have been scalped /filled. Much evidence of subsidence, including elevated tree roots in areas that have no evidence of inundation, and observed cavaties in the subsoils. Anomalous redox concentrations indicative of a water table at approximately 30 -40 inches were observed deep in one soil profile near the wetland boundary. Hydrology Factors No water to 40 inches In all profiles examined. Other Comments Portions of the staging area (Basin B) that were delineated as wetland may be filled to the extent that wetland hydrology is missing. Copyright Peterson Environmental Consulting, Inc.