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<br />Attachment A <br /> <br />April 21, 2014 <br /> <br /> <br />Mr. John Anderson, P.E. <br />Assistant City Engineer <br />City of Arden Hills <br />1245 W. Highway 96 <br />Arden Hills, MN 55112 <br /> <br /> <br />RE: Proposal for MS4 Permit Compliance Assistance <br />City of Arden Hills, Minnesota <br /> <br /> <br />Dear Mr. Anderson: <br /> <br />Bolton & Menk, Inc. is pleased to present this proposal for professional consulting engineering services relative to <br />your request for assistance in compliance with the reissued National Pollutant Discharge Elimination <br />System/State Disposal System (NPDES/SDS) Permit for Municipal Separate Storm Sewer Systems (MS4s) <br />Permit MNR040000. Our proposal is based on your approved MS4 Stormwater Pollution Prevention Program <br />(SWPPP) Application for Reauthorization. <br /> <br />As you are aware, the SWPPP reauthorization process required the City to commit to revising ordinances, <br />establishing written procedures and documentation methods, including the following major items among others: <br /> <br />1.Revising the Illicit Discharge Ordinance to include procedures for responding to, investigating and <br />eliminating illicit discharges and update the Illicit Discharge Detection and Elimination Program. <br />2.Establishing dry weather inspection procedures and documentation to detect illicit discharges. <br />3.Revising the current ordinances to include stormwater management provisions, including: <br />a.Post construction runoff volume, Total Phosphorus (TP) and Total Suspended Solids (TSS) <br />limitations. <br />b.Stormwater management limitations and exceptions regarding infiltration techniques, including <br />those on linear projects. <br />c.Providing off-site mitigation opportunities for developments that cannot meet these limitations <br />on-site. <br />d.Providing permanent city access to all structural Best Management Practices (BMPs) designed to <br />meet these limitations for performance evaluations and maintenance needs. <br />4.Revising the education and outreach program. <br />5.Establish Enforcement Response Procedures (ERPs). <br />6.Establish written procedures for the following: <br />a.Conducting site plan reviews. <br />b.Public notification of stormwater noncompliance issues. <br />c.Inspecting structural BMPs inspection and documentation. <br />7.Create an inventory of municipal facilities and operations. <br />8.Develop BMPs to be used to protect drinking water sources. <br />9.Develop procedures for determining the TSS and TP treatment effectiveness of City owned ponds. <br />10.Develop a stormwater training program for applicable City employees. <br /> <br /> <br />