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\!� <br /> September 30,2002 <br /> Job Number:LG02-335 <br /> Page 12 <br /> A ground-water sample obtained from the onsite domestic water well was analyzed for <br /> DBCP and nitrate. The analysis indicated that DBCP was non-detectable and nitrate was 39 <br /> mg/L as NO3 (8.6 mg/L-N). The result of the nitrate test indicates the ground water is below the ✓` <br /> maximum contaminate level set by the United States Environmental Protection Agency of 45 <br /> mg/L as NO3 (or 10 mg/L-N). <br /> As a result of the nitrate loading analysis, an average nitrate concentration of percolating ' <br /> water(Nc) for the 9.78-acre property with a 3-bedroom residence and a second dwelling unit is <br /> .- 5.31 mg/L-N. Based on this nitrate analysis, our office does not believe that the nitrate <br /> concentration of the combined rain and effluent will be above 10 mg/L-N over the long tel <br /> This opinion is based on the relatively large size of the property and low quantity of septic <br /> effluent. <br /> IX. LIMITATIONS <br /> The conclusions of this report are based on the information provided regarding the <br /> existing and proposed development, the use of the subject property, and the site conditions as <br /> they existed at the time we excavated our test hole and performed the percolation test. It was <br /> assumed that the test hole and percolation test results are representative of the subsurface <br /> conditions in the general area. <br />,., Our professional services were performed, our findings obtained, and our conclusions <br /> proposed in accordance with generally accepted engineering principles and practices. This <br /> warranty is in lieu of all other warranties either expressed or implied. Test findings and <br /> statements of professional opinion do not constitute a guarantee or warranty, expressed or <br /> implied. <br />►. Regards, <br /> NEIL O. ANDERSON&AS ., INC. <br /> DaVJ. Welch, M.Sc., Senior Geologist Gan u ba:,JM.Sc. <br /> CEG-2151, CHG-653 Civil Engineer No. 59010 <br />,. DJW,GSHWdw OEFSSip <br /> ED GP Q�g. H. <br /> J\D <br /> \C ,yJl C7 < Y Z <br /> Cr pP No. 2151 S �� ' 0 co 10 m <br /> CERTIFIED E j03 *l <br /> o ENGINEERING <br /> GEOLOGIST QSTgT C!V4- <br /> ��OFCAL�FOP =°� <br />