TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The feed stock further comprises moisture content of less than 30%, preferably 10-20%. The engineered fuel feed stock upon gasification at 850 degrees C and an air equivalence ratio (ER) of 0.34 produces synthesis gas, which comprises: hydrogen (6-30, 15-20, 25-30 or 16-24 vol.%); carbon monoxide (14-30, 20-30, 12-17 or 15-20 vol.%); methane (0.3-6.5, 0-5-3, 2-5 or 4-6 vol.%); carbon dioxide (6-13, 5-8 or 5-10 vol.%); nitrogen (44-68 or 42-48 vol.%); and hydrogen/carbon monoxide ratio (0.3-2, preferably 0.5-1.5, 0.8-1.2, 1, 1.5 or 2). The engineered fuel feed stock further comprises at least one fuel component that enhances the gasification of the fuel feed stock, where the enhancement is a: reduction in the amount of sulfur emissions produced; reduction of chlorine emissions produced; and reduction of heavy metal emissions produced. The engineered fuel feed stock further comprises at least one additive that renders the feed stock inert, where the additive is calcium hydroxide. Preferred Components: The feed stock has: a high heating value (HHV) of 3000-15000 BTU/lb, 5000-10000 BTU/lb, 7000-9500 BTU/lb, 7000-11000 BTU/lb, 11000-15000 BTU/lb or 13000-15000 BTU/lb; volatile matter content of 40-80%, 60-70% or 80-95%; carbon content of 40-50%, 60-70%, above 75% or 70-80%; hydrogen content of 5-6%, 5-7%, 6-7% or 6-9%; moisture content of 15%; an ash content of less than 5%, 7%, or less than 10%; and sulfur content of less than 0.5%, less than 2% or less than 0.2%. The engineered fuel feed stock has: a hydrogen/carbon ratio of 0.09-0.14, 0.11-0.15 or 0.05-0.1; and oxygen/carbon ratio of 0.3-0.6, 0.6-0.9, 0.01-0.05 or 0.15-0.3.The engineered fuel feed stock is in a loose, non-densified form or densified form, where the densified form is a cube or pellet. The engineered fuel feed stock is rendered inert. The densified form of the engineered fuel feed stock has: a diameter of 0.25-1.5 inches; a length of 0.5-6 inches; a surface to volume ratio of 20:1-3:1; a bulk density of 10-75 lb/ft3; a porosity of 0.2-0.6; an aspect ratio of 1-10; a thermal conductivity of 0.023-0.578 BTU/(feet.hour.degree Fahrenheit); a specific heat capacity of 4.78x 10-5-4.78x 10-4 BTU/(lb degrees F); and a thermal diffusivity of 1.08x 10-5-2.16x 10-5 ft2/second. EXAMPLE - Typical engineered feed stock composition comprised (in wt.%) of: moisture (3.25); ash (4.51); volatile matter (86.43); fixed carbon (5.81); carbon (51.88); nitrogen (0.06); oxygen (32.65); carbon/hydrogen ratio (6.9); and carbon/oxygen ratio (1.6).