7725 EVERGREEN WAY BASE FILE 2016-01-01 MF Import

downward to the north and east with a tota� vertical rrlief of approximately twenty (20) feet. However, surface features are strongly influenced by topographic highs located at the southeast corner of Mervyn's and between Shops "B" and the Drug Emporium buildings. 'I'hese mounds, approximately ten (10) to twelve (12) feet in hei9ht, are composed of relativel} recent :�an-placed fill materials having a fine-grained texture. Vegetation on the western portion of the site consist� of evergreen and deciduous trees with undergrowth. 'Ifi e remainder of the site has been cleared in the past and now supports small diameter alder saplings, bushes and sparse field grasses. Subsurface The site was explered by drilling seven test borings and excavating one test pit at the locations shown on Plate 2. Detailed descriptions of the conditions encountered at each location explored are presented on the boring and test pit logs appended to this report. The borings and the test pit revealed a relatively uniform subsurface profile. In general, the site is underlain by dense, glacially consolidated, silty sand with gravel till soils. This unit is found at or near the surface in the central and northern portions of the site as indicated by Sorings B-3, B-5, B-6 and B-7• In the southeastern quadrant of the property, the till is overlain by fill soils up to thirteen (13) feet in deyth. Test Pit TP-1 near the southwest corner encountered three and one-half feet of weathered till or possible fill soil. The fill is a brown sandy silt containing organics, wood fragments and concrete/as- phalt rubble. Dense till soil was found beneath the fill at all locations except Boring B-1 where four and one-half feet of loa�e weathered till separates the lower dense strata from the upper fill soils. The borings were terminated in dense till soil at the maximum depth drilled of twenty three (23) feet. - 3 - _ _ _. . . _. . _ . _ _ _ _ - �.