LW SURVEY COMPANY TARGETING THE WORLD THE UNIQUE CHALLENGES OF “AS-BUILT” PROJECTS

WHO IS LW SURVEY?  Established in 1998 by Les Welch in Duluth, MN.  12 Office locations  26 PLS professionals covering 33 States  10,000+ miles of major pipeline projects  6 Blue Sky Certified users  PRISM (custom data validation tools)  PPMS (Pipeline Project Management System)

PLAN YOUR WORK…WORK YOUR PLAN …it takes a special kind of person to do as-built R. Calvert LW Survey Skyline Certified Lvl III

THEN AND NOW… THEN  Depth of Cover  P.I. locations  P.O.B. / P.O.E.  Valve locations  Length and Bearing table  Alignment Sheets  Pipe Tally NOW  GEO Database (.gdb)  Ascii point data files  Detailed Alignment Sheets  Skyline “AlignFM” (typical 36 “BSDI” tables)  Validated & Staged data for PODS loading  PIGGING Data  Foreign crossing information  Hydrotest data  MTR Reports  Mill Reports  Detailed Pipe tally  Cathodic Test station data  Above Ground locations (mlv, launcher receivers, taps)  CAD (.dwg) base maps  ONE-CALL DATA REPORTING

SURVEY PREPARATION  Understanding the Client’s Pods Instance  Which tables are “required” and which fields inside those table are “required”  Understanding the “domain lookups”  Dictionary types (text or numeric)  Reverse Engineering the Survey Code/Attributes  Current Survey code list should be reviewed to ensure the capture of data satisfies the client’s final needs

DATA PREPARATION  MTR Data  Mill data from the manufacturer identifying pipe specifications and test reports.  IFC Data requisition  IFC data (survey points, vector data, parcel data, imagery)  Above Ground Piping Drawings  Typical or site specific fabrication drawings  Procurement Records  What was purchased in order to validate what was used  Empty Data?  What is the client’s standards for empty fields (“unk”, -1, “unknown”, “0”)

DATA STAGING  Final Tie-in is complete…what now?  Validating Heat Numbers against MTR / Mill reports  Checking for elevation busts  Checking for Joint Lengths  Duplicate x-ray numbers  “AlignFM” or “REV”  Checking collected data against client “domain table” values  Loading BSDI tables for client PODS load.

Thank you for your time and attention! We look forward to working with you in the future.