# Cost Estimates A Mix of Quotes and Extrapolations Estimating State Wetland Delineation Costs In Vermont David Brotzman VCGI Aug. 3, 2006.

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Cost Estimates A Mix of Quotes and Extrapolations Estimating State Wetland Delineation Costs In Vermont David Brotzman VCGI Aug. 3, 2006

Photo Scale vs. Mapping Unit Photo Scale vs. Target Mapping Unit 1:80,000 = 3-5 acres 1:58,000 = 1-3 acres 1:40,000 = 1 acre 1:24,000 = 0.25-0.50 acre 1:12,000 = 0.10 acre * Per Ralph Tiner

Photo Scale vs. # of Photos Scale # of Photos/Quad#Photos/VT* 1:80,0001 160 1:58,0001.5240 1:40,0004640 1:24,000203200 1:12,000 426720 *Estimates based on 58 sq. mi/quad and Vermont land surface area. May be approx. 220 quads (1:24K) covering the state **Per Ralph Tiner

Cost Estimates Aerial Imagery Acquisition Only * Estimates from NRCS/FSA (2003) for CIR Hardcopy # Rough Estimates from VMP for digital Orthos

Cost Estimates Quickbird Satellite CIR Imagery Prices from the latest Price Sheet

Cost Estimate Labor Only Blue numbers (VT) extrapolated from RI (A) multiplier is 7.8 (RI vs. VT area)

Cost Estimates Full Data Collection – Using Aerial Imagery Blue numbers (VT) extrapolated from RI (B) multiplier is 7.0 (RI vs. VT area)

Confidence Are These Numbers Sane ? Standard Estimating Procedures Were Used Maybe 20% Give or Take Not 50% Out of Line Only a Funded Cost Estimating Effort Can be Fully Trusted

Mapping Unit to Cost Estimate 1:80,000 = 3-5 acres 1:58,000 = 1-3 acres 1:40,000 = 1 acre 1:24,000 = 0.25-0.50 acre 1:12,000 = 0.10 acre *Assumes New Imagery Acquisition = ? = \$1,750,000 = \$3,460,135 = \$6,676,670

Options Get Other Agencies Involved In Imagery Buy NRCS, FSA, VT Fish and Wildlife, etc. Private Sector Sanborne Mapping – Automated Collection Seriously Consider an RFI Still Need To Purchase CIR Imagery Imagery Is Not Your High Cost Item You Can Get Help

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