Field Office Compliance - Assistance

Assistance ID - 106378
Des Moines Water Works - 310338211
9966 Maffitt Lake Dr Cumming, IA 50061
Dallas County

FO 5

Report
File Name File Type File Date Note
Comments
4/18/2019 Gastineau, Janet <[email protected]> 7:40 AM (0 minutes ago) to Bryan, Cole For your information in the event someone from the Iowa DNR contacts you regarding IANG and PFAS. ---------- Forwarded message --------- From: Gastineau, Janet <[email protected]> Date: Wed, Apr 17, 2019 at 2:06 PM Subject: Re: DMWW & PFAS To: Moles, Diane <[email protected]> Cc: Moeller, Mark <[email protected]>, roger.bruner <[email protected]>, Dan Cook <[email protected]>, Amie Davidson <[email protected]>, Corey Mccoid <[email protected]> For what it's worth, the DM Airport has an individual permit for storm water discharge; the permit recognizes three outfalls: 001 Yeader Creek basin to the east; 002 Frink Creek basin to the west; and 003 Middle Creek basin to the south. Outfall 002 for Frink Creek includes the western half of the airport property, including the Iowa Air National Guard Base, and other tenants. Storm water from the IANG drains to the southwest runway and northwest toward Frink Creek, a tributary to the Raccoon River. Outfall 003 for Middle Creek basin includes the DSM maintenance department, consolidated fuel farm, and a few other tenants. Storm water drainage from this area is to a detention pond with an outlet that flows under Army Post and ultimately to Middle Creek, which is a tributary to the North River. Bryan Belt (515-256-5160) is the DSM engineer that may have information to help address these issues. image.png On Wed, Apr 17, 2019 at 1:37 PM Moles, Diane <[email protected]> wrote: Ted Corrigan, acting CEO of Des Moines Water Works, called me today with the results of the testing they conducted for PFOS and PFOA. He said the Fleur plant finished water, infiltration gallery raw water, and Raccoon River raw water were all less than the detection limit of 14 ng/L. The Frink Creek outlet into the Raccoon was 500 ng/L, which he said indicates that the contamination was leaving the airport property. He's wondering what's next with the process and can DNR move along the elimination of the source of contamination, such as redirecting Frink Creek flow from the north to the south (into the North River, if I understood correctly). He's left you a message, Dan. One of his concerns is that it's non-detect now, but since he also knows it has left the property, the waterworks is in a difficult position. I received this PFAS website from ASDWA today, and it's the most comprehensive one that I've seen thus far. I sent it to Ted, too, as it's a public site: www.asdwa.org/pfas. JANET GASTINEAU
State of Iowa DNR Home Site Policy
Leading Iowans in caring for our natural resources
Version: 2.3.1.23706
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