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I <br /> ITable 11: Electric and Magnetic Field Guidelines from Internationally Organizations <br /> I Electric Field (kV/m) Magnetic Field (mG) <br /> Organization General General <br /> Public Occupational Public Occupational <br /> IIEEE 5 20 9,040 27,100 <br /> ICNIRP 4.2 8.3 830 4,200 <br /> IACGIH 25 10,000/1,000' <br /> NRPB 4.2 =_= 830 4,200 <br /> I <br /> European Union 4.2 830 <br /> Source: IEEE-Institute of Electrical and Electronics Engineers, ICNIRP-International Commission on Non- <br /> ' Ionizing Radiation Protection,ACGIH-American Conference of Industrial Hygienists, NRPB-National <br /> Radiological Protection Board <br /> a for persons with cardiac pacemakers or other medical electronic devices. <br /> IEstimated electrical fields at maximum operating voltage for the proposed project, as provided by <br /> the applicant,are presented in Table 12. The expected electric fields for the structure type and <br /> I <br /> voltage proposed have been calculated at various distances from the centerline. <br /> Table 12: Calculated Electric Fields (kV/m)for Proposed Orono 115 kV Transmission Line <br /> I <br /> (3.28 feet above ground) <br /> Maximum Distance to Proposed Centerline(feet) <br /> I Operating <br /> Voltage <br /> Structure Type (kV) -300 -200 -100 -75 -50 -25 0 25 50 75 100 200 300 <br /> Single Pole <br /> I <br /> I1-Post Vertical 121 .011 .021 .043 .037 .037 .338 1.09 .668 .130 .030 .049 .025 .012 <br /> 115 kV Single Circuit <br /> Single Pole <br /> Davit Arm 115 121 .002 .005 .011 .005 .071 .341 .437 .341 .071 .005 .011 .005 .002 <br /> I <br /> kV/115kV Double <br /> Circuit <br /> Single Pole Davit Arm <br /> 115 kV/115kV Double 121 .002 .004 .004 .014 .088 .278 .107 .294 .089 .014 .004 .004 .002 <br /> I Circuit <br /> w/Dist.Under Build <br /> Single Pole <br /> V-Frame 121 .005 .015 .104 .215 .507 .977 .295 .977 .507 .215 .104 .015 .005 <br /> 115 kV Single Circuit <br /> Source:Xcel Energy,2011a, and Xcel Energy,personal communication, November 22,2011. <br /> * Maximum operating voltage is the nominal voltage plus five percent(i.e. 115 kV+5.75=121 kV). <br /> IThe closest home to the transmission line is approximately 275 feet. The highest calculated electric <br /> field directly under the transmission line is 1.09 kV/m. As indicated by the applicant in the route <br /> permit application and subsequent information, the highest calculated electric fields at 100 and 200 <br /> I feet from transmission centerline would be 0.104 kV/m and 0.025 kV/m, respectively (Xcel Energy, <br /> personal communication,November 22,2011). These electric field strengths are within the range of <br /> IEnvironmental Assessment <br /> PUC Docket E002/TL-11-223 Page 33 <br />