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t <br /> JAMES D ROBINSON, PE, CEG Page 2 <br /> September I, 2010 <br /> Project Number 2010-1015 <br /> NITRATE LOADING STUDY <br /> TABLE OF CONTENTS <br /> 1. CHEN11CAL AND PHYSILCAL PRQ—PEMES Qf ME SOIL 3 <br /> Description of Chemical and Physical Properties of the Soils....................................................3 <br /> SiteMap...............................................................................................................................:.......3 <br /> Desq f i Li 4 <br /> Discussionof Soil Lithology.......................................................................................................4 <br /> Mass Transport Pr a 'e f the i! 4 i <br /> 2. GROSZNDWATERANALYSIS_...............................................................................................4 <br /> GroundwaterInformation............................................................................................................4 <br /> Deseriptian Of The Depth And Gradient Of Groundwater In The Area.....................................4 <br /> rwmd Water Contamination Issues in the Area------------------------------------------------------------------------5 <br /> —Current and Future Groundwater Uses.......................................................................................5 <br /> 3. S0_URCES_AND CALCULATED IMPACT OF NITRATE TO GROUNDWATER...............5 <br /> Current Off-site Sources of Nitrate..............................................:........................:,....................5 <br /> Rainfall Contribution.:.......................................................................... .5 <br /> Current On-site Sources of Nitrate.....................................................:........................................6 <br /> Future On-site Sources of Nitrate............................. <br /> Mass Balance of Nitrogen Loading................... ....................._._.__.6 <br /> Impact of Nilrogen Loading........................................................................................... <br /> 7 <br /> .......... <br /> 4. DISCUSSION OF NITRATE LOADING RESULTS ......................... ........7 <br /> TotalNitrate Impact......... - .._u_.y..,.._.._.__........ ...................:................................................7 <br /> Mitigation methods........ ; ... <br /> .................................................................. ............ ............................8 <br /> 5. CONCLUSIONS AND RECOMMENDATIONS......................................................................8 <br /> Professional Signature <br /> 6. LIMITATION ........ ... .. .. .. . ... . ...... .... ......... .. . .... .. .. . .. . .. . .. 8 <br /> a User Reliance.. . 9 <br /> APPENDIX <br /> JAMES D ROBINSON,PE,CEG ENVIRONMENTAL•ENGINEERING•GEOLOGY <br /> PHONE(209)642-5445•FAX(209)740-4303 <br />