The address you requested is below, dont forget to place the orange paper on top of all the documents and then a copy of the RFE mail and then you rfe response document, its a rigid rule if u dont follow that way then USCIS will surely mess up things.
USCIS TSC
4141 St. Augustine Rd.
Dallas, TX 75227
http://www.uscis.gov/portal/site/uscis/menuitem.5af9bb95919f35e66f614176543f6d1a/?vgnextoid=b0f860a07706d010VgnVCM10000048f3d6a1RCRD&vgnextchannel=52a46c854523d010VgnVCM10000048f3d6a1RCRD