Field Office Compliance - Assistance

Assistance ID - 116289

Osceola Water Works - 310338248

2320 WEST CLAY STREET Osceola, IA 50213

Clarke County

FO 5

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Comments

Date	Comment	Commenter
11/16/2020	Gastineau, Janet <janet.gastineau@dnr.iowa.gov> 3:43 PM (1 minute ago) to Ty, Osceola You are correct that table A doesn't apply to the reservoir because surface waters, like West Lake, are vulnerable just by their nature and it's not a new/proposed source. However, these would still apply as prudent measures to consider for the protection of West Lake as source water for the water treatment plant that produces drinking water for the community. Vulnerable systems have greater monitoring frequencies than a groundwater system would, for example. Refer to the site survey that was done for the proposed reservoir. That may help. The City, as owners of West Lake, may also have some ordinance that specifies protection or allowed land uses. The Iowa DNR would not give permission, per se, for construction. On Fri, Nov 13, 2020 at 3:02 PM Ty Wheeler <twheeler@osceolaia.net> wrote: Hi Janet, Thanks for pointing me in the right direction. However, I’ve been trying to study this and I’m not sure I know what I’m looking at. Table A has maximum distances from a well, but would that also include a surface water supply? Basements, for example, have to be 10 ft away. That surely wouldn’t apply to a lake? I guess the question is if the City can permit residential development outside of a 30 ft setback from the top of dam elevation of West Lake. The City’s current setback from a rear property line is 30ft, which is how I got to that figure. My assumption is that we can, assuming all dwellings are served by a our sewer utility and not by septic.	JANET GASTINEAU

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