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Appendix I/Computation of Long Term Costs
Kalispell City Airport Feasibility/Master Plan Study August 1999 APPENDIX I COMPUTATION OF LONG TERM COSTS 100 1.01 UNIT COST OF FOG SEAL AND PAINTING Rate of Application = 0.15 gal/SY Density = 235 gal/ton Unit Cost = $300.00/ton UCFS- (0.15 gal/SY) (1 Ton/235 gal) ($300/Ton) = $.019/SY PAINTING AT = ANUMBERS + ARWYCENTERLINE +ATWCENTERLINE+ AHOLDBARS ANUMBERS = See Figure 4 = 2 [(5')(80') + (2')(10')] + 2[2(20')(10') + 2(11.4')(5') + (7')(5') + (19')(5')] = 3,416 SF ARWYCENTERLINE = 0 STRIPE/200'OFRW LENGTH) (120' LONG)0' WME)(3'600 RUNWAY) = 2,160 SF ATWCENTERLINE = [(3,600' PARALLEL TAXIWAY) + 3(240' CONNECTINGTW)] (•51 WIDE) = 2,160 SF AHOLDBARS = 3[2(.5')(35') + 2(.5')(17.5')] = 157.5 SF AT = 7,893.5 SF TCP = ($.50/SF ) (7893.5SF) = $3,946.75 2.0 2" OVERLAY UCOV = ($)2/TON)(1104/1 "Depth- SY)(T'VTGN/20004) = $3.52/SY) + Painting. Page 1 A Paving FVI FV2 FV3 ALT 1 66,900SY $16,757 $239,435 $16,757 ALT 2 66,900SY $16,757 $239,435 $16,757 ALT 3 46,000SY $12,755 $165,867 $12,755 ALT 4 66,900SY $16,757 $239,435 $16,757 ALT 5 42,650SY $12,133 $154,427 $12,133 FVI = UCFS • APAVING + TCp FV2 = UCov e APAVING + TCp FV3 = UCFS • APAVING + TCp Page 2 3.0 ANNUALIZED COST OF PAVEMENT MAINTENANCE ALT 1,2, and 4 i=5% n,=5 n, = 10 n3 = 15 ATOTAl A, + A2 + A3 r = A, = FV, os $3,033 (1+t)ni_1 = ($16,757) A — FV ( ((1.05)'o-1 .05$19,036 22 (1+7)n2)_($239,435) 1 A3 3 = FV ( ) _ ($16,757) ( °' ) _ $777 (I+!)n3 -1 (1.Os)15 1 ATOTAL = $22,846 ALT 3 FV, = $12,236 ATOTAL = A, + A2 + A3 FV2 = $165,370 FV3 = $12,236 r = $2,308 A, = FV, (1+r)n-1) _ ($12,755) ((1+.05)'-1) -05 A2 = FV, 2_1) _ ($165,867) 05 $13,187 A3 = FV3 ($12,755) ( 05 )_ $591 (1+.os)15 1 ATOTAL = $16,087 Page 4 ALT 5 FV, _ $11,372 FVz = $153,686 FV3 = $11,372 ( ) _ ($12,133) ( 05 ) _ $2,196 _ ($154,427) ('0°.°_) _ $12,277 A3 = FV3 (1+i)"s_1 3) ( .os - I = $562 _ ($12,13 �l.o.05 i ATOTAL = $15,035 Source: Handbook of Engineering Fundamentals, Ovid W. Eshbach, Third Edition, Page 1307 Page 5 4.0 COST OF MOWING In a conversation with Mike Baker*, he indicated the cost of mowing the existing facility took 1 worker with tractor 3 work days. He estimated costs at $10/HR for worker, $25/HR for tractor. He estimates that the airport requires 3 complete mowings and 5 partial mowings per season. COST = (3 days) (8 IRS/DAY) ($10/HR+ $25/HR) = $840/MOWING . ANNUAL COST = (ESTIMATED 5 COMPLETE MOWING/SEASON) = ($840) = $4,200/YEAR This is for a —60 acre mowing. The estimate cost of moving is shown below. A Area to Be Mowed Factor A/60 ACRE Estimated Cost (Factor)($4,200) ALT 1 115 ACRES 1.917 $8,050 ALT 2 144 ACRES 2.400 $10,000 ALT 3 64 ACRES 1.067 $4,480 ALT 4 128 ACRES 2.133 $8,960 ALT 5 60 ACRES 1 $4,200 *Telephone conversation on 5/19/99. 5.0 TOTAL ANNUAL COST _ lVll-111V 1L1 VAlV l.L 1VI ALT 1 $22,846 $8,050 $30,896 ALT 2 $22,846 $10,000 $32,846 ALT 3 $16,087 $4,400 $20,567 ALT 4 $22,846 $8,960 $31,806 ALT 5 $15,035 $4,200 $19,232 6.0 LONG TERM USER COST CTOT CLT + CLV + CIT + CIV CLT = Cost for local OPS driver/passenger time. CLV = Cost for local OPS vehicle costs. CIT = Cost for itinerent/air taxi driver/passenger time. CIS, = Cost for itinerent/airtaxi vehicle costs. CLT — (VDT) (DRT) (RTL/OPS) (OPS)/V VDT = Value of Drive Time = $30/HR DRT = Distance Round Trip = See table. RTL/OPS = Round Trips Local Per Operation = 1 RT/2 OPERATIONS OPS = Operations = 14,000 OPS V = Average Speed = See table. CLV = (Cv) (DRTL) (RT/OPS) (OPS) Cv = Vehicle Cost/Mile = DRT = Distance Round Trip = $0.50/Mile Varies with Alternative, see table. DRT V CLT CLV ALT 1 2.06 25 $17,388 $7,210 ALT 2 2.06 25 $17,388 $7,210 ALT 3 1.7 25 $14,280 $5,950 ALT 4 14 40 $73,500 $49,000 ALT 5 1.7 25 $14,280 $5,950 Page 7 CIT — (VDTI) (DRT) (RTI/OPS) (OPS) / V VDTI = Value of Driver Time = $60/HR DRT = Distance Round Trip = Varies with Alt, see table below. RTI/OPS = Round Trips Per Operation = 1 RT/1 OPS OPS = Operations = 6,400 Air Taxi + 13,600 itinerant = 20,000 OPS V = Average Speed = Varies with Alt, see table. C ry = (Cv) (DRn) (RTI /OPS) (OPS) = Shown in previous table. CV = Vehicle costs = $0.50/MILE 1JRTI — mown in previous table ALT 1 2.06 25 $98,880 $20,600 ALT 2 2.06 25 $98,880 $20,600 ALT 3 1.7 25 $81,600 $17,000 ALT 4 14 40 $420,000 $140,000 AT T C 1 '7 1)c 001 tnn Q"1'7 AAA --Y- - �.• �-� wv •,vvv wi i,vvv Page 8 CTOT ALT 1 1 $144,078 ALT 2 1 $144,078 ALT 3 1 $118,830 ALT 4 1 $682,500 ALT 5 1 $118,830 Page 9