7200 HARDESON RD 2016-01-01 MF Import

�.d: _ . �_ . � CNA Architecture Group 12 April 1991 W-7352 Page 4 Cascade Geotechnical visited the site periodically to perform in-place density tests on compacted fill soils. Field reports submitted for our review indicate that visits were requested by Merrill Associates on an intermittent basis. Field reports document four visits in 1986, 11 visits in 1987, 6 visits in 19E38, and 15 visits in 1989 through 5eptember 5. Cascade field reports indicate that, in general, soils tested were adequately compacted for future foundation support as then envisioned. The majority of the density testing reports do not, however, indicate whether the native soils subgrade was observed, and generally provide only limited, sketchy information regarding the density test and earthwork locations. From the information presented, it appears that the majority of the density testing was accomplished north of the Overall Laundry site. Some density testing was aiso accomplished within the extreme southwest corner of the property. More recent filling is evident on the Overall Laundry site, apparently consisting of uncompacted soils hauled from other locations on the property. 4.0 SITE CONDITIONS l'he site conditions were evalu2ted fc+r this study in March 1991. The proposed developmeht and approximate locations of our explorations are presented on the Site and Exploration Plan, Figure 1. The subsurface conditions are described below while the exploration procedures and interpretive logs of the explorations are presented in Appendix A. The results of laboratory testing and an exp�anation of laboratory procedures are presented in Appendix e. 4.1 Surface Conditions The site generally consists of a bare, loose, fiil surface which gently slopes downward from the south and west, approaching the grade of Hardenson Road. A large stockpiie of fiil soils is approximately located in the center of the site, dividing the site into a distinct northern and southern portion. The northern portion of the site is relatively level with the su�cial soils presently capable of supporting occasional light vehicle traffic. The southern portion of the site is rough, with severe rutting, and soft, wet surficial soils. The stockpiled soils are also very suft and wet. Standing water was visible on the south portion of the site, adjacent to the stockpiled soiis.