FLOOD ZONE - 512 & 514 N Huylars Ln - Plan

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INTRODUCTION CITY OF SANTA ANA Planning and Building Agency 518 Huylars Ln Santa a. CA 92703 Approved FOR PERMIT ISSUANCE Priority Engineering has conducted a site inspection, made a physical test of on- ite soils and prepared the following report of Geotechnical Investigation for the residential property to t dser t 5I 8 Huylars a Ln, Santa Ana CA. The investigation was made to provide site evaluation and de data or 2 a e: proposed new accessory dwelling units (ADU) to be constructed on the site. SITE DESCRIPTION The site, Assessor Parcel 100-573-34. Latitude 33.749353 Longitude-117.925833 The subject property is a rectangular -shaped corner lot encompassing approximately 0.51 acre. It is developed with a one-story, 2,729-square-foot single-family residence, originally constructed in 1960, consisting of two bedrooms, one bathroom, and an attached garage. The lot measures approximately 75 feet along the north and south boundaries, and 300 feet along the east and west. A one-story multi -unit structure is located on the north end of the property. The proposed ADUs are planned for the vacant portion of land situated between the existing structures. The surrounding neighborhood consists primarily of single-family, wood -framed homes situated on smaller sized parcels. 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 May 5, 2025, a field exploration was performed, which consisted of 2 borings in the approximate locations of the proposed ADU. Hole #1 was drilled to a depth of 10 ft. The equipment used was a hand operated power auger with extensions. Moisture tests taken at 22" was 20.8%, and at 74" was 18.9%. Ring samples taken at 2ft and bulk sample taken at 5 ft. for laboratory testing. The soil encountered was dark gray 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. The equipment used was a hand operated power auger with extensions. Moisture tests taken at 24" was 17.8% and at 60" was 14.8%. Ring samples taken at 2 ft and bulk sample taken at 5 ft. for laboratory testing. The soil encountered was dark gray sand. The description of the subsurface soil and the depth of boring #2 are shown in Boring Log C2.