Field Office Compliance - Assistance

Assistance ID - 133379
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
12/27/2024 On Friday, December 27, 2024 Nathan Casey sent the following email to Janet Gastineau and copied me: Janet, Our total chlorine analyzer at the Bondurant Booster Station failed this morning. We think we have it working again, but because of the work we had to do, the manual says we won’t be able to trust the readings for at least 24 hours. Over the weekend I’d like to do grab samples for the total chlorine at this station at least until we can trust the readings. We do monitor chlorine and ammonia flow to ensure the chemical feed system is working properly. If you remember we have a second analyzer at this site. That analyzer has never worked very well, it periodically drops to 0, but we can also monitor it to ensure we don’t have any problems. Operators will do daily grab samples and calibrate the meter until we’re sure the readings are accurate again. Let me know if you have any questions or comments. Thank you, Nathan Nathan Casey, P.E. | Director of Water Production Des Moines Water Works | WATER YOU CAN TRUST FOR LIFE 2201 George Flagg Parkway | Des Moines, Iowa 50321 | www.dmww.com Phone: (515) 283-8709 | fax: (515) 283-8757 | e-mail: [email protected] BILL GIBBONS
12/27/2024 On Friday, December 27, 2024 I received a call from Nathan Casey with the Des Moines Water Works. He called to report the CL 17 continuous chlorine monitor at the Bondurant Booster Station was not working properly (they boost with chloramines from this station). He wanted to know if it was OK to do daily grab samples until they get the monitor working again which he thought wouuld not be until Monday (December 30th). I told him under the circumstances that should be fine. BILL GIBBONS
State of Iowa DNR Home Site Policy
Leading Iowans in caring for our natural resources
Version: 2.3.1.23706
"
"