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INTRODUCTION Priority Engineering has conducted a site inspection, made a physical test of on-si the following report of Geotechnical Investigation for the residential property locz Santa Ana CA 92703. The investigation was made to provide site evaluation and c proposed accessory dwelling unit (ADU) to be constructed on the site. SITE DESCRIPTION The site, Assessor Parcel 008-083-06. Latitude 33.749485 Longitude-117.881629 CITY OF SANTA ANA PlannipplpkB ail it g Agency Tanta Ana CA 92703 Approved FOR PERMIT ISSUANCE soils and prepared edat111.2 W6`"St, Date: The site is a 6534 square ft rectangular shaped lot. North and south property line is 53 ft, east and west property line is 125 ft. The existing residence is a 2 bedroom, 1 bathroom, 448 sq ft structure, built in 1910. The property is a 1 story single family residence with a long driveway leading to a detached garage. Rear yard has a perimeter wooden fence. Surrounding houses are composed of single family, wood framed, residential structures on similar size lots. SCOPE OF WORK Our scope of work consists of field and laboratory programs to evaluate the physical and engineering properties of the onsite soils. Description of the exploration and laboratory programs are presented below. EXPLORATION AND FIELD INVESTIGATION PROGRAMS On July 11, 2024, a field exploration was performed, which consisted of 2 borings, in the approximate location of the proposed addition. Hole #1 was drilled to a depth of 10 ft. Equipment used was a hand operated power auger with extensions. Moisture tests taken at 20" was 11.3%, at 45" was 8.6%, at 72" was 13.8%. Ring samples taken at 1 Oft and bulk sample taken at 5 ft. for laboratory testing. The soil encountered was olive brown silty sand. The description of the subsurface soil and the depth of boring # 1 are shown in Boring Log C 1. Hole #2 was drilled to a depth of 5ft. Equipment used was a hand operated power auger with extensions. Moisture tests taken at 25" was 10.7%, at 50" was 7.1 % and at 60" was 11.6%. Ring samples taken at 5 ft and bulk sample taken at 3 ft. for laboratory testing. The soil encountered was olive brown silty sand. The description of the subsurface soil and the depth of boring #2 are shown in Boring Log C2.