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<br />ii <br />2.2.2 Existing or Potential Groundwater Contamination Issues in the General Location of the Site ..... 7  <br />2.2.3 Current Use of Groundwater at the Site and of the Future Expected Use of Groundwater as <br />Related to the Proposed Development Project ........................................................................................ 8  <br />2.3 SOURCES AND CALCULATED IMPACT OF NITRATE TO GROUNDWATER ....................... 8  <br />2.3.1 Current Off-Site Sources of Nitrate to Soil and Groundwater in the General Up Gradient Area <br />and the Contribution of Nitrate Load from These Sources to the Project Site ........................................ 8  <br />2.3.2 Description of Impact of Rainfall Contribution of Nitrate Load to the Project Site ...................... 8  <br />2.3.3 Current On-Site Sources of Nitrate to Soil and Groundwater and the Contribution of Nitrate <br />Load from These Sources to the Project Site ........................................................................................... 8  <br />2.3.4 Proposed Future On-Site Sources of Nitrate to Soil and Groundwater and the Contribution of <br />Nitrate Load from These Sources to the Project Site ............................................................................... 8  <br />2.3.4.1 Denitrification Estimate ........................................................................................................... 9  <br />2.3.5 Calculated Mass Balance of Nitrogen Loading Considering all Potential Sources Identified ....... 9  <br />2.3.6 Calculated Impact of Nitrogen Loading from Site Project to Down Gradient Wells, Rivers, <br />Lakes, Etc. ............................................................................................................................................... 9  <br />2.4 DISCUSSION OF NITRATE LOADING RESULTS RELATIVE TO PROPOSED METHOD OF <br />WASTEWATER DISPOSAL .................................................................................................................... 9  <br />2.4.1 Total Nitrate Impact from Proposed Project .................................................................................. 9  <br />2.4.2 Methods Proposed to Mitigate and Known or Future Impact to Soil and Groundwater from <br />Nitrate, and/or any Other Constituent of Concern, at and/or Around the Project Site .......................... 10  <br />3.0 CONCLUSIONS AND RECOMMENDATIONS SECTION ....................................................... 10  <br />3.1 REPORT CERTIFICATION ............................................................................................................ 10  <br /> <br /> <br />APPENDICES <br />APPENDIX A <br />Figure 1 Vicinity Map <br />Figure 2 Site Map <br />Figure 3 Proposed Building Location and Sanitary Sewer Design <br />Figure 4 Parcel Map <br />Figure 5 Geologic Map <br />APPENDIX B <br /> Historical Aerial Photographs <br />APPENDIX C <br /> Historical Septic Permits <br />APPENDIX D <br /> Percolation Test Information and Engineered Sewer Plan <br />APPENDIX E <br /> Soil Profile and Groundwater Information <br />APPENDIX F <br /> Nitrate Loading Calculations <br />