5-3 Water

Please identify and describe the proposed water treatment system with activated carbon, including a description of the safety protocols that will be present for treatment of the contaminated water. Please include an evaluation of carbon breakthrough

RESPONSE 5-3:

 

Invenergy has engaged a local engineering firm (Pare Engineering) to develop the specific design details of the treatment facility that is proposed to be installed at the well head. The preliminary/conceptual design of the treatment system consists of two activated carbon vessels arranged in a lead/lag (series) configuration. The lead vessel will be used to treat for organic contaminants including MBTE. A sample location will be located between the 2 vessels to test for contaminants. When break-through occurs from the lead vessel, the lag vessel will be used for redundant treatment while the media in the lead vessel is replaced and becomes the new lag vessel. This will ensure that withdrawn water from the contaminated aquifer will be treated to levels below existing drinking water standards for organics associated with the contaminated groundwater. An operation and maintenance manual will be developed prior to start-up of the facility.

 

RESPONDENT:

 

John Niland, Invenergy Thermal Development LLC

Mike Feinblatt, ESS Group, Inc.

 

DATE:

April 28, 2016