4205 S 3RD AVE 2018-01-02 MF Import

i- e 6 T H U _ o: 3 0 C A S C A D E TES. P.03 CASCADE GEOTECHNICAL May 21 1988 Job No. 884-21G Town 4 Country Steel Buildings Page 2 southeast quarter of the building area at a depth of approximate- ly two (2) feet below the existing surface of the fill pad. Teat 02 was performed on the surface in the northwest quarter of the building area. A sample of the fill soil was taken to our labora- tory for Proctor moisture density relationship analysis. The in -place density test results are presented at the end of this letter. The thickness and condition of the fill soil in the building area and the native subgrade soils were observed by excavating a backhoe test pit. The test pit showed approximately four (4) feet of fill overlying native sand and silty sand. The observed fill material was firm and appeared to be well compacted. The native sand and silty sand was light brown, medium dense to dense and moist. The native soil observed in the test pit may be used for a bearing capacity of 2000 p.s.f. if the soil is undisturbed and free of organic material. A test pit adjacent to the north ecology block wall indicated that the blocks in the immediate area had been placed on the firm native sand and silty sand. The areas outside the proposed building area on the east and south sides were inaccessible to the backhoe. However, the topography of the site outside the building area suggests that the building area had been excavated to the native sand and silty sand prior to the placement of the ecology block perimeter wall. We did not observe site preparation or fill placement, nor have we analyzed the ecology block retaining system. All soils and fills observed or tested are consistent with good construction proce- dures. We would expect conditions elsewhere on the site to be similiar. However, it must be recognized that variations may occur.