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Revised November 4, 2020 <br /> BGG Job No. G164.01 <br /> Based on the proposed nursery improvements and the studies discussed herein,the septic system and <br /> leach field is expected to contribute a long-term buildup of nitrate in the aquifer of approximately <br /> 2.6 mg/L-N. This level falls below the US EPA drinking water recommendation of 10 mg/L-N.It is <br /> our opinion that the site is suitable for the use of a standard septic system utilizing leach lines. <br /> LIMITATIONS <br /> This report has been prepared exclusively for the use of NJA Architecture of behalf of I Hsin <br /> Orchids, Inc. and has been conducted in accordance with current professional standards; no other <br /> warranty is expressed or implied. <br /> The conclusions and recommendations contained in this report are based upon the information <br /> provided to us regarding the proposed improvements,subsurface conditions encountered at the field <br /> exploration location, and professional judgment. <br /> This report is not an environmental assessment; it does not claim to identify recognized <br /> environmental conditions or health and safety concerns for the site. The values discussed herein <br /> should not be used for the design and sizing of the septic system. The design and sizing of the septic <br /> system should adhere to the San Joaquin County Environmental Health Department On-Site <br /> Wastewater Treatment Systems Standards. <br /> Should you have questions or need additional information, please contact Stefanie Parman at <br /> (209)602-6569 or smpabaezgeotechnicalgroup.com. We appreciate the opportunity to work with <br /> you on this project. <br /> Respectfully submitted, <br /> BAEZ GEOTECHNICAL GROUP <br /> No lxma <br /> Stefanie M. Parman William R. Stevens <br /> Project Engineer Principal Engineer <br /> CE 43010 <br /> Attachments: <br /> Plate 1 —Vicinity Map <br /> Plate 2—Site Plan <br /> Plate 3 —Nitrate Loading Calculation <br /> Appendix A—Percolation Test Results and Permit <br /> Appendix B—San Joaquin County Environmental Health Department Septic Records <br /> Appendix C—Web Soil Survey <br /> Appendix D—Boring Log <br /> Appendix E—DBCP and Nitrates Test Results for Existing Onsite Well <br /> Appendix F—Rainfall Data <br /> Appendix G—References <br /> E:\BGG\G164 Hsin Orchids\SSNL Report\Response\Hsin Soil Suitability.doc <br /> BAEZ GEOTECHNICAL GROUP Soil Suitability Study and Nitrate Loading Study-I Hsin Orchids Page 9 <br />