Texas Instruments areawide assessment of the central Florida phosphate industry for the Environmental Protection Agency considered five scenarios conveying alternative themes and intents of possible policy decisions. To permit a decision as to which alternative presents the least regrettable effect, TI overlaid (figuratively), the present and projected environmental settings with these alternatives for industry regulation. In this volume (VII) of TI's 7-volume report to the EPA, the relationship of the scenarios and TI's assessment methodology is explained and a matrix displays the natural, social, and economic elements potentially impacted by phosphate industry activities and their level of impact. Effects determinations are discussed.