Specifications include, but are not limited to: 3.2.1All tests shall be completed in accordance with the procedures outlined in Attachment No. 1 - Missouri Air Permit for the Springfield Southwest Clean Water Plant 042017-010. 3.2.2Conduct performance testing on two Combined Heat and Power (CHP) engines to determine NOx, CO, VOC, and SOx emission factors for natural gas and biogas. 3.2.3The emission tests shall provide emission factors for a full range of loads on the engines at 50, 75, and 100 percent. The tests shall be conducted to represent three different operational loads for each pollutant. One 3-run test set shall be conducted with the CHP engine operating at permitted capacity. 3.2.4Additional testing shall be performed to determine sulfur removal in the sulfur control portion of the gas conditioning system. Sulfur content shall be tested by ASTM D-5504 prior to and after the sulfur control system. 3.2.5NOx, CO, and SOx emission factors in gram of pollutant/hp-hr shall be developed from the test.