Field Office Compliance - Assistance

Assistance ID - 106556

Bayer CropScience LP - 3670 - 310203151

2500 WIGGINS RD. Muscatine, IA 52761

Muscatine County

FO 6

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Attached Files/Reports

File Name	File Type	File Date	Note

Comments

Date	Comment	Commenter
5/2/2019	Facility discussed Flood Plan implementation on 4/29 and an updated version on 5/1. No bypassing yet, as all on site water will be discharged via outfall 001 at this time. Additional on site treatment, above their current flood plan protocol, is being implemented. Facility was instructed to document abnormal conditions and report as much as they can on monthly DMR. See email: Mr. Brian Lee, The following is a brief summary of what was discussed via telephone this morning regarding the implementation of portions of the Iowa Department of Natural Resources (IDNR) approved June 2011 Flood Plan (Flood Plan) at the Bayer Muscatine facility. The call this morning was a follow-up to the initial notification to Mr. Terry Jones of the IDNR by Ed Steinke on 4/29/2019 that the Bayer facility may need to initiate portions of the facility’s Flood Plan. During our discussion this morning, Bayer provided the notification that we intend to begin implementing portions of our Flood Plan, specifically pumping storm water/seep water to Outfall 001. We also discussed a change to the implementation of the Flood Plan due to site wide flooding issues that were not anticipated at the time of the approved Flood Plan in 2011. This change was related to the location where pumping from/to Outfall 001 would occur. The Flood Plan identifies specific locations storm water/seep water would be pumped from/to Outfall 001. Due to the extent of the flooding at the site, the pumping locations from/to Outfall 001 will change and more locations may be added as needed, but the facility is incorporating an additional safeguard not outlined in the plan and that is to utilize activated carbon units to treat the storm water/seep water prior to introducing it into Outfall 001. Other elements of the plan, including introducing the storm water/seep water upstream of the Outfall 001 monitoring location as well as the herbicide monitoring at Outfall 001 remain consistent with the Flood Plan. Your verbal approval was given for this approach. You also recommended that we document any atypical operations for our records as well as potential submittal of this information to the IDNR in the future. One additional item to note that was not discussed in the phone conversation, although the Flood Plan indicates the need for testing of storm water/seep water to determine whether it may be pumped to Outfall 001, this testing of storm water/seep water will be done after treatment with activated carbon. In all other respects, the monitoring provisions of the Flood Plan will be followed. Thank you for your assistance this morning and please feel free to contact me with any questions. Best regards Terry Larsen Environmental Engineer Bayer U.S. – Crop Science	BRIAN LEE

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