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SECTION VII: ESTIM ATED EXPENSES The p ow er fo r pumping water fr o m Lake M ead to M anganese, Inc. is obtain ed fr o m the C olora d o R iver C om m ission at pu blic p ow er rates w h ich fluctu ate but have averaged le s s than $. 005 per kwh. P o w e r fo r pum ping the W ater D is tr ic t's share to M anganese, Inc. w ill com e fr o m the sam e so u r ce and the co st is estim ated to be $. 005 p er kwh. Due to the in c r e a s e in fr ic tio n head with an in crea se in the quantity of water pum ped, the p ow er consum ption attributed to that p ortion of the water fo r the L a s V egas V a lle y Water D istrict w ill in cre a se fr o m 3, 860 to 4, 040 kwh p er m illio n gallon s. (d) C ost of transm itting water fr o m M anganese, In c, to L as V e g a s. B .M .I . w ill d eliv er Lake M ead water to the L as V egas V a lle y W ater D is tr ic t 's ta k e -o ff stru ctu re near M anganese, Inc. F r o m this poin t, the w ater w ill be transm itted through a pips lin e (s e e P L A T E III) to the C ity of L as V ega s. The operating co sts of tran sp ortin g the w ater fr o m M anganese, Inc. to L as V egas m a y b e grouped into two ca te g o rie s - (1) p ow er co s ts and (2) m aintenance and overh ead c o s ts . The p ow er consum ption per m illion gallons b y the b o o s te r s ta ­tion lo ca te d near W hitney (s e e P L A T E III) w ill in cre a se fr o m a p p ro x i­m a tely f§ 300 kwh, at a pumping rate of 1 m gd, to a p p roxim a tely 1, 600 kwh, at a pum ping rate of 14 m gd. P u b lic pow er fr o m the C o lora d o R iv e r C o m m is s io n is not available at the W ater D is tr ic t 's b o o ste r station. T h e r e fo r e , pow er rates in Schedule "M M " of the Southern N evada P o w e r C om pany w ere used to d eterm in e the p ow er co sts of b oostin g w ater fr o m M anganese, Inc. to L as V eg a s. T h ese ra tes v a ry a cco rd in g to the m ea su red dem and per m onth, ranging fr o m a p p ro x i­m a te ly 0.79^ p er kwh at a pumping rate of 4. 3 m gd to 0. 69£ p er kwh at the pum ping rate of 13.7 m gd. M aintenance and overh ead co sts on the p ro p o s e d tra n sm issio n pipe line and appurtenant fa c ilitie s fr o m M anganese, Inc. to L as V egas have b een estim a ted to be $ 3 .0 0 per m g pum ped. A low er fig u re was u sed fo r this sy stem than the $5. 50 used fo r the B . M . I. fa c ilitie s , sin ce the p ro p o s e d sy stem w ill have a m ore durable type of p ipe, few er f a c i l i ­ties req u irin g painting and other m aintenance, and le s s operatin g eq u ip ­m ent. 7 05 T otal estim ated cash exp en d itu res. T able VII show s the estim a ted fig u re s fo r population, num ber of s e r v ic e con n ection s and w ater con su m ption fr o m both the w ells and Lake M ead up to 1990 (the life of the b on d s). T h ese fig u re s , and those shown m T ables VIII and IX w ere u sed to d evelop the total cash expenditures shown in T able X . -3 6 -