Waste Water: 8-2

8-2       Compositional Analysis of Wastewater Streams – Page 46 of the October 2015 application states that wastewater from the plant will be from four primary sources - wastewater from the high purity water treatment processes (reverse osmosis and EDI systems), blowdown from the steam generator (HRSG) needed to control chemistry in the stream generator, blowdown from the evaporative coolers used to control chemistry (summer use only) and sanitary wastewater from the operating staff.  In Table 6.2-2 of the October 2015 application, it seems that the application may be combining the 3 types of process water (WW from high purity water treatment, and the two blowdown sources) into a single process water stream.  Please provide a compositional analysis for all of the waste streams that may be discharged from the proposed plant to the Burrillville WWTP.

Response:

The wastewater characteristics in the Projected Clear River Energy (“CREC”) Wastewater Discharge (Max) column in Table 6.2-2 of the Rhode Island Energy Facility Siting Board (“EFSB”) application represents the combined characteristics from the water treatment and two blowdown water sources from the plant.  The fourth column of Table 6.2-2 shows the expected average characteristics of the sanitary wastewater.  The two streams will be combined prior to discharge into the sewer.  For comparison, the average day process wastewater flow is estimated to be 32 gpm; the average sanitary wastewater flow is 1 gpm.