This　paper　presents　an　integrated　feasibility　study　on　designing　systems　for　remediating　petroleum-contaminated　sites.　Its　consists　of　components　of　site-condition　investigation,　multiphase　multicomponent　transport　modeling,　remediation　technology　screening,　and　remediation-system　design.　These　components　are　incorporated　within　a　general　framework　to　effectively　address　the　system　complexities.　Application　of　the　developed　method　to　a　petroleum-contaminated　site　in　western　Canada　indicates　that　reasonable　results　have　been　generated.　A　comprehensive　remediation　plan　that　contains　landfarming,　soil　vapor　extraction,　and　in-situ　bioremediation　was　recommended.　The　developed　system　could　help　petroleum　industries　to　reduce　costs　at　consulting,　planning,　design,　and　operation　stages　of　their　remediation　practices.