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BARRIER ATTENUATION FOR POINT SOURCES JOB :LODI TRANSFER STA <br /> NOISE SOURCE & : LEVEL / DISTANCE : ALL ACTION 90. 0000 50. 0000 <br /> RECEPTOR ELEVATION_: 5. 5000 RECEPTOR DIST TO WALL (Di ) : 15.0000 <br /> EMITTER ELEVATION-: 4. 0000 EMITTER DIST TO WALL (D2)-: 250. 0000 <br /> ELEVATION OF TOP OF WALL 12. 0000 <br /> FREQUENCY : 500. 0000 <br /> CALCULATIONS Di : 42. 2S00 225. 0000 16. 3478 <br /> D2: 64. 0000 6. 250E+4 250. 1280 <br /> EMMITTER-RECEPTOR D: 2. 2500 7. 023E+4 265. 0042 <br /> FRESNEL NUMBER 1. 3057 <br /> BARRIER ATTENUATION IN DECIBELS 'A' WEIGHTED <br /> FRESNEL NO ELEVATED SOURCE* SOURCE NEAR GROUND** <br /> 0. 0100 5. 0000 0. 0000 <br /> 0. 0200 5. 2000 0. 1000 <br /> 0. 0300 5. 5000 0. 8000 <br /> 0. 0400 5. 9000 1. 5000 <br /> 0. 0500 6. 5000 2. 0000 <br /> 0. 1000 8. 0000 2. 8000 <br /> 0. 5000 11. 5000 6. 2000 <br /> 1. 0000 13. 5000 7. 9000 <br /> 5. 0000 20. 0000 14. 9000 <br /> 10. 0000 20+ 17. 5000 <br /> 30. 0000 20+ 20.0000 <br /> ATTENUATION AT RECEPTOR 8. 0400 <br /> (PICK VALUE FROM ABOVE CHART) <br /> UNRESTRICTED NOISE LEVEL 0 RELIEVER 75. 5143 <br /> NOISE LEVEL AT RECEIVER DUE TO BARRIER 67. 4743 <br /> HOURS OF OPERATION_: 24. 0000 AMBIENT DAY; NIGHT: 53. 0000 43. 0000 <br /> DAY/NIGHT NOISE LEVEL CALCIS: 1. 342E+8 -1. 796E+6 1. 796E+5 <br /> DAY/NIGHT NOISE LEVEL AT RECEPTOR (Ldn) : 67. 4217 <br /> * Ht. of source must be less than 501 but greater than D2^. 5 and <br /> Ht. of receiver must be greater than D^. 5 <br /> ** Ht. of source must be near the ground ( ie tires) <br /> 1 <br /> L <br />