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Revised November 4, 2020 BGG Job No. G164.01 SITE DESCRIPTION The subject 27.01-acre site is identified as Assessor's Parcel Number(APN)058-060-460. The site is located at. 122 West Harney Lane in Lodi, California, on the south side of Harney Lane, appeoximately one-half mile west of Lower Sacramento Road. The site currently contains a caretaker residence, an office, several agriculture storage buildings and greenhouses, and a stormwater basin. The northernmost, approximately 14-acre portion of the site was vacant and fallow at the time of our site visit. The vacant area in the northeast portion of the property is utilized for stormwater retention and an approximately one-acre,6-feet deep stormwater basin is located in the southwest corner of the site. The relatively flat site has surface elevations between about 24 to 27 feet above mean sea level (MSL), according to topographic survey data included on Sheet A 1.0,Site Plan,dated 5/20/20 by NJA Architecture.According to the San Joaquin County Community Development Department, the subject property is zoned AG, general agriculture. EXISTING AND PROPOSED SEPTIC SYSTEM USAGE Existing Septic System A septic system is currently located at the site. A 1,600-gallon septic tank for the existing nursery facility is located east of the office building and caretaker residence and will remain in use for that purpose. Proposed Septic System The existing onsite septic system will remain in service for the nursery facility. On-Site Septic Permit History The San Joaquin County Environmental Health Department septic permit files were searched for the Site address. A record for Permit No.75334,dated 5-13-75,was obtained for the location identified as'/4-mile west of Extension Road on the south side of Harney Lane,which appears to be the subject site. A 1,600-gallong septic tank was constructed in May 1975. No other septic permit files were located. A record of the SJCEHD permit obtained in 1975 is contained in Appendix B. Existing Septic Tank Usage in the Vicinity The general site area primarily consists of vineyards and orchards with several ranch residences. What appears to be a single-family residential neighborhood is located approximately one-half mile east of the site. To estimate the septic system usage in the area,we used professional judgement to identify potential septic systems that exist within approximately one square mile surrounding the project site. Google Earth imagery was utilized. Each building cluster on the photo was assumed to have one septic system, and sites perceived to be used for commercial or industrial purposes were assumed to have two septic systems. Using this method, it is estimated that approximately 40 to 50 septic systems per square mile are located in the immediate vicinity of the Site. Septic Permit History in the Vicinity A review of septic permits on file with the San Joaquin County Environmental Health Department for nearby properties indicated that most septic systems in the area utilize leach lines. BAEZ GEOTECHNICAL GROUP Soil Suitability Study and Nitrate Loading Study-I Hsin Orchids Paget