Firm D 



Annual volume 34.58 million pounds 



Size of supply area 6,914 square miles 



Radius of Firm D supply area 46.92 miles 



Supply Band IV 



Radius added by Band IV: 



46.92 miles — 39.81 miles = 7.11 miles 



Radial distance to impound point: 



/ Q2 4_ ^2 I (46.92)- + (39.811^ 

 P - ^ 2 =V 2 = ^^-^^ ""^^' 



Road Distance and Time to Impound Point 



Road distance 



D = a + bP = -1.534 + 1.351 (43.51) = 57.25 miles 



Time one way 



T = 2.865 + 2.6818 (57.25) — 0.0102 (57.25)- = 

 121.8 minutes or 2.03 hours 



Time round trip = 4.06 bours 



Similar information for all firm, supply band, and density condi- 

 tions is shown in Appendix F, Table I. 



46 



