Field Office Compliance - Assistance

Assistance ID - 88533

Des Moines Water Works - 310338211

9966 Maffitt Lake Dr Cumming, IA 50061

Dallas County

FO 5

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Report

Attached Files/Reports

File Name	File Type	File Date	Note

Comments

Date	Comment	Commenter
8/29/2016	8/29/16 I saw DMWW staff Friday for an inspection and they provided me with this attachment. For comparison, they had the following levels reported 8/10/16: Latest MICROCYSTIN Results: 1. Fleur Drive Finished Water: Mon – Thurs results = .938 ppb, 3.05 ppb, 0.19 ppb, and 0.109 ppb 2. Raccoon River: Mon – Thurs results = 50 ppb, 35 ppb, >5 ppb, and > 5 ppb (yet to dilute and test for WED/THURS) 3. Des Moines River: Mon – Thurs results = .105 ppb, .196 ppb, .151 ppb, and 0.463 ppb (more than tripled since Monday) 4. McMullen & SWTP Finished Water: Non-detects in finished 5. We currently have microcystin levels in each river that are above the action level of 0.3 ppb. I can confidently state that we have never (knowingly) been in this position. Cyanotoxin levels are reported to be under control and testing continues daily. They are still chlorinating backwash return and sending solids to the lagoon across the river. Janet	JANET GASTINEAU

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