Issues that initiate PCOs  Drawing error  Specification error  Contract document discrepancy  Code violation  Engineer-requested change  Submittal review comment  Request for information  Owner-requested change  Contractor-requested change  Substitution request  Permit agency request  Permit requirement  Easement requirement  Property owner request  Utility conflict  Value engineering proposal  Changed site condition  Safety  Code change  Code interpretation  Tax increase or decrease  Quantity increase or decrease  Weather  Material availability  Labor availability PCOs that correct the design EX: $18K LS vs $31K T&M
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