Report of Excavation Observations

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AET Job No. 20-04684 - Page 3 of 4 Deviations from the above design information could necessitate altering our conclusions and recommendations. Contact us if the information stated is different from the actual project design. Building location and elevation information obtained at the site, and presented in this report, was referenced to the existing structure and the footing excavations as located by others. BACKGROUND INFORMATION Previously, we performed a subsurface exploration program at the referenced site. The results were presented in our April 12, 2004, Report of Subsurface Exploration and Geotechnical Review (AET Job No. 20-04015). Refer to that report for pertinent background information and for our recommendations to prepare the building area for structural support. EXCAVATION OBSERVATIONS We observed the excavations for the spread footings of the building addition on October 8, 2004, and some of the excavations for the spread footings within the interior for building remodeling on October 28, 2004. We observed the four spread footings along Grid Line 17, from Grid T to about 5' north of Grid M, as well as the spread footings at Grids S-13 and T-14. We were not present at the site on a full-time basis. Our observations were performed during two visits to the site, when requested by McGough Construction. In addition to observing the soils exposed in the excavations, we conducted shallow hand auger borings and hand cone penetrometer probes in the bottoms of the excavations. The soils encountered were classified in general accordance with ASTM:D2488. Estimates were made of their strength properties based on their resistance to advancement of the hand auger and from the hand cone penetrometer readings. The soils exposed in the bottoms of the excavations were classified as naturally deposited alluvial sands and silty sands. Our hand cone penetrometer readings indicated the naturally deposited soils