Field Office Compliance - Work Request

Work Request ID - 2750

Next Era Energy Duane Arnold Energy Center - 310377472

3291 Daec Rd Palo, IA 52324

Linn County

FO 1

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Describe Request

Date	Comment	Commenter
8/4/2014	Joe Welter from the Stanley Group had sent a request for a site survey at Duane Arnold. I am submitting the offical request for site survey. I will email the work request as well and forward on Joe's original correspondence. NextEra Duane Arnold, LLC is ready to conduct a field office site survey for the two proposed projects described below. Mike Casey is looking at the week of August 18th for the site survey. Wednesday August 20 is the preferred date on our end. Please let us know your availability. Outfall 002 TRC Duane Arnold has received DNR’s approval of an Antidegradation Alternatives Analysis and Facility Plan for Outfall 002 Total Residual Chlorine (TRC) Compliance. Duane Arnold intends to construct a Dechlorination System to meet the proposed TRC effluent limitations. The Antidegradation Alternatives Analysis was issued for public comment on February 19, 2014. No comments were received. DNR approved the Antidegradation Alternatives Analysis on May 8, 2014. The Facility Plan was approved by DNR on May 16, 2014. Outfall 001 Temperature Duane Arnold is awaiting approval of an Antidegradation Alternatives Analysis for Outfall 001 Temperature Compliance. This Antidegradation Alternatives Analysis was issued for public comment on April 25, 2014. No comments were received. Three copies of the final Antidegradation Alternatives Analysis were sent to Tim Bauer on June 3, 2014. The selected alternative was construction of an approximately 1,500-foot long gravity flow pipeline from the existing blowdown system to a new outfall location at the Cedar River, downstream of the Intake Structure. In accordance with IDNR’s guidance, a Facility Plan and Construction Permitting are not required for construction of the pipeline. This is due to the proposed effluent consisting solely of cooling water blowdown and there is no proposed construction of treatment infrastructure.	TIMOTHY BAUER

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Report

Attached Files/Reports

Document Name	Type	File Date	Note
57 WW Palo Nextera Duane Arnold roi 082014 abh.pdf	Inspection Report (public)	08/20/2014	ROI for dechlorination

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Compliance Tracking

Action Type	Date	Completed Date	Comment	Delete