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llrerracon Nitrate Loading Study <br />Nielsen Property Ripon, California <br />January 15, 2019 Terracon Project No. NA187066 <br />approximately one mile north and east of the site. Depth to groundwater is anticipated between <br />45 and 60 feet bgs. Agricultural land use on the site and vicinity is anticipated to be the highest <br />contributor to nitrates in groundwater. If the EHD requires mitigation for the project, an advanced <br />water treatment product or carbon source may be considered mitigation options. <br />6.0 LIMITATIONS <br />As indicated, our study takes into account the subject property only with the sewage load applied <br />over the property site area. The study does not take into account surrounding properties and/or <br />lands. The method utilized for the nitrate loading analysis is based on a simple mass balance <br />formula, discussed in a published article by Hantzsche and Finnemore (1992), which provides a <br />convenient and simplified method to estimate long-term groundwater nitrate impacts on an area- <br />wide basis. A more detailed analysis was not requested nor intended. <br />Our professional services were performed, our findings obtained, and our conclusions proposed <br />in accordance with generally accepted engineering principles and practices. This warranty is in <br />lieu of all other warranties either expressed or implied. Test findings and statements of <br />professional opinion do not constitute a guarantee or warranty, expressed or implied. <br />Responsive • Resourceful • Reliable 9