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r REcmm FEB 12 2020 ENVIRONMENTAL HEALTH DEPARTMENT Soil Suitability and Nitrate Loading Study CHEA INVESTMENTS LLC PROPERTY 1350 Report Avenue, Stockton, California 1.0. INTRODUCTION AND PROPOSED DEVELOPMENT Advanced GeoEnviron mental, Inc. (AGE) has prepared this Soil Suitability and Nitrate Loading Study (Study) for the property located at 1350 Report Avenue, Stockton, California (site or subject property). The purpose of this Study is to determine the potential impact from nitrate loading and the suitability of the subsurface for an onsite wastewater treatment system (OWTS). The Study is required by the San Joaquin County Environmental Health Department (EHD) to modify the land use/zoning of the property to light manufacturing. The study was performed in accordance with the requirements of Section 9-1105.2(d) of the San Joaquin County Community Development Department. The scope of work included a soil percolation test, review of published soil and groundwater information, local septic use and permit research, and estimated nitrate impact to soil and groundwater at the site. The site and surrounding area are illustrated in Figure 1. A site plan depicting structures, the percolation test hole location, and the existing septic system are illustrated in Figure 2. 1.1. DESCRIPTION OF SITE The location of the site, surrounding properties and general setting is illustrated on the Stockton West topographic map (7.5 Minute United States Geological Survey (USGS) Topographic Series, California). The site is located in Section 43, Township 2 North, Range 7 East, Mount Diablo Base and Meridian (Figure 1). The map shows the property located at an elevation of approximately 25 feet above mean sea level in an area of low topographic relief. The regional slope of the area is relatively gentle and dips toward the west-southwest. The property is located at the end of, and on the east side of Report Avenue, approximately 100 feet south of the intersection of Report Avenue and East Harding Way, Stockton, California. The site consists of a 1.85-acre parcel identified as San Joaquin County Assessor Parcel Number (APN) 143-150-150. The current use type of the property is commercial. The existing structures on the site include a 24,900-square foot rectangular warehouse building and an approximately 1,000-square foot office trailer. The property is provided potable water by the California Water Service Company. 1.2. DESCRIPTION OF PROPOSED DEVELOPMENT There is no development planned for the subject property. This Study was prepared as required by EHD for use permit application PA-1900111 to convert the cold storage facility into a food trailer manufacturing facility.