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DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc. Overview. Why we undertook this project Need in Market to Improve Cadastral Data but Limited Budgets Help Clients to Improve Land Maps Find a Better, Faster, Cheaper Way to Improve Coordinates.

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DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

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  1. DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

  2. Overview • Why we undertook this project • Need in Market to Improve Cadastral Data but • Limited Budgets • Help Clients to Improve Land Maps • Find a Better, Faster, Cheaper Way to Improve Coordinates. • Survey Grade not Required • Identify Areas Where Survey is Required

  3. Current Situation • Increasing Accuracy Requirements • Survey Data of Undefined or Insufficient Accuracy • 200 Year Old Documents • Survey Data Digitized from Topographic Maps • Well Locations Calculated from Footages / QQs • Lease Boundaries and Wells Aligned to Legacy Grids

  4. GCDB Geoprocessing Issue • GCDB Mismatches between Big Horn and Johnson counties

  5. Project Objectives • Is this a Feasible Idea? • Rapid Data Acquisition • Timely Data Acquisition • Improved Metadata • Improve Schema Design • Photographs • Supplemental Information (State Board) • Corner Quality Information

  6. Business Drivers • Need to Improve Data • Fit to Imagery • Publish Maps with Ownership on “Right Side” of Street. • Establish Published Corners / Control Points on the Map. • Proper Schema • Photographs • Create a “Regulatory Grid” • Improve Data to Meet Increased Regulatory Spacing Requirements.

  7. Phase 1 Littleton: • Out of 49 section corners: • 7 found, 8 unidentified • Discrepancies between 6.5-80ft East of Boulder • 39 wells • Discrepancies between 0.8-10.5ft • One was plugged and reclaimed

  8. T 1N R 66W Ft. Lupton

  9. https://doraimage.state.co.us/L:Hkq3WH1Y0j12N1ZH/

  10. Findings • Out of 49 section corners: • 30 found • 7 were calculated from witness monuments • Discrepancies between 8.324-103.15ft • Average discrepancy = 32.548ft • 11 out of 55 were outside the error of 40ft • 2 were double marked

  11. 40 ft

  12. Oil/Gas Wells Ft. Lupton

  13. Findings • Number of wells used for the study: 49 • Discrepancy Range: 0.336-23.216ft • Average Discrepancy = 6.564ft • 20 wells that have been plugged

  14. Questions Elizabeth Crawley, Habitat Management, Inc Email: ecrawley@habitatmanagementinc.com Robert White, WhiteStar Email: rwhite@whitestar.com

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