 Unable to shoot at the house being used as the Lang residence, the crew built Lana's front porch inside a sewage processing facility for the final scene of the episode where Lana walks up the stairs to her house.The local sewage treatment facility is also the site for the LuthorCorp pesticide plant, which Lex was sent to Smallville to manage.The crash site of Clark's ship was shot at the sandpits where "Mission to Mars" was filmed.