The Ohio Power Siting Board on June 4 approved two fairly minor amendments to its May 2013 approval of a siting certificate for the Oregon Clean Energy LLC combined-cycle, 799-MW, gas-fired project in Oregon, Ohio.
In October 2014, the board granted a prior amendment application coverings changes like re-location of the electrical switchyard to a 7.5-acre parcel of land adjacent to the current property and add a temporary construction trailer and parking lot on land adjacent to the current property. On March 9, the board granted an application for other changes, including: using ultra-low-NOx combustors, instead of dry low-NOx combustors; changing the generator voltage from 20 kilovolts (kV) to 19 kV; increasing the estimated size of the oil storage tank from 50 gallons to a tank capable of holding up to 500 gallons; and changing the 16-cell cooling tower placed in a double-wide arrangement to 11 cells in a single-row arrangement.
On May 1, Oregon Clean Energy filed this application requesting a third amendment to its certificate. It proposed to add one new permanent access road to the switchyard and modify the planned ammonia storage tank system. The on-site ammonia tank storage system was to consist of one 40-foot long, 9-foot diameter, double-walled carbon steel tank, allowing for a maximum of 18,600 gallons of 19% aqueous ammonia to be stored on-site. The company modified the storage system design to use two tanks that will hold 25,500 gallons net each or 26,800 gallons gross, which equates to a total gross volume of 53,600 gallons. Oregon Clean Energy (OCE) noted that this change will permit ten days of storage for inclement weather conditions.
“Based on the record in this proceeding, the Board finds that, pursuant to R.C. Chapter 4906, OCE’s third amendment application should be approved subject to the conditions and commitments set forth in the Order in the Oregon Certification Case and OCE’s certificate should be amended to incorporate the proposed modifications, as described in the third amendment application filed on May 1, 2015,” said the June 4 decision.
The May 1 amendment application offered this project schedule update: “As stated in the First Amendment, initiation of construction activities was scheduled for October 2014 to reach commercial operation by May 1, 2017. As a clarification, commercial operation is expected to be reached sometime between March and July 2017.”