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<br />City of Arden Hills <br />March 2008 <br /> <br />2335 Highway 36 W <br />St. Paul, MN 55113 <br /> <br />T,1651-636-4600 <br />fax 651-636-1311 <br /> <br />\iVIf{'N.bonestroo.com <br /> <br />March 17, 2008 <br /> <br />.tt Bonestroo <br /> <br />Ms. Kris Giga, PE <br />City of Arden Hills <br />1245 W Hwy 96 <br />Arden Hills, Mn 55112-5743 <br /> <br />Re: 2007 III Program <br />City of Arden Hills <br />Bonestroo File No.: 353-07103-0 <br /> <br />Dear Ms. Giga, <br /> <br />We are pleased to present the City of Arden Hills with this report on the 2007 Infiltration/Inflow Program. This <br />project consisted of an initial sanitary sewer collection system analysis effort with the ultimate goal of reducing the <br />amount of clear water in the City system. This clear water results in MCE5 charges for treatment in addition to a <br />surcharge for the peak flow rate. <br /> <br />Based on the analyses completed we have provided some guidance subsequent analytical steps and identification <br />procedures, which can then be followed by rehabilitation of clear water sources. These are basic steps and will be <br />subject to future modification and adaptation as more data are developed. The City's goal of III reduction will <br />require a long term commitment to continuously observe conditions and rehabilitate sources as they are identified <br />or they occur. <br /> <br />Thank you for the opportunity to work on this project and get to know some of the City staff. We are available to <br />discuss the contents of this report with you and other interested parties at any mutually convenient time. <br /> <br />Sincerely, <br />BONESTROO <br /> <br />CV\~~. <br /> <br />Charles Jans{} <br />Project Manager <br /> <br />I hereby certify that this Report was prepared by me <br />or under my direct supervision and that I am a duly <br />Licensed Professional Engineer under the laws of the <br />State of Minnesota. <br /> <br />Cha~~~' <br /> <br /> <br />Date: ~~.Ilo8' Reg. No.: 14596 <br /> <br />Page 2 of 12 <br />