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05/17/2000 15:23 651-766-4196 RICE CREEK W DIST PAGE 01 Z F- _ D 1 11' Westwood Professional Services.Inc. , 6 E 94 -11 = MAY 1 7 2000 u May 12,2000 RICE CREEI< WA►ERSN;;Q DiiSTRICTA 7599 Anagramprivc • �I� � : cI� `3./^M""j( /1/VIA��If ,Edon Praint,h1N 55334 Ms.Kate Drewry vnnee:612.971•!1!0 District Administrator Pay:612.937.5822 Rice Creek Watershed District ® Ton Email:W 5.We3tV 7.5150 Email:wps�Flwestwoadps.tom 3585 Lexington Avenue North,Suite 330 Arden Hills, Minnesota 55126-8056 FAG RE: RCWD PERMIT#96-11 APACRE PLAZA/SILVER LAKE CENTE MANAGEMENT PLAN ' PHSP G,S r- .. fAXIF�r.e.v Dear Ms. Drewry: I have reviewed your letter of April 25,2000 regarding the drainage at Apache Plaza and have discussed these issues with Mr. Larry McCabe of the Ste.Marie Company. As requested in your letter of November 24, 1999,we have completed a site survey and field review of existing conditions with RCWD staff to determine probable source of the problem and potential solutions. As we have discussed, it appears from these efforts that the site conditions remain essentially as constructed and there have been no modifications or settlements since release of the District permit which might have led to alteration of the drainage patterns. In other words, the site conditions remain as reviewed and accepted by the RCWD upon completion of construction. The jurisdictional issues not withstanding,the Ste.Marie Company has expressed a desire to find a final resolution of these issues as simply and expeditiously as possible. Based upon my meeting with RCWD staff on February 18' of this year I understand the following to be reasonable proposals for resolving these issues: 1) The Ste.Marie Company will install a concrete trench drain in the Cub Foods access drive along the north property line of the development. This.-trench drain will serve to intercept. runoff from the parking lot that currently bypasses the existing drainage system and route the runoff to the existing storm water pond. This approach should address items 2 &3 in Derek Knapp's memorandum of November 10, 1999. A site plan and details of this installation are attached for your review and approval. This work will be completed within ninety days of RCWD approval subject to the Ste.Marie Company's ability to obtain right of entry from the property owner. 2) The resolution of the areas adjacent to the Erickson Oil site is slightly more problematic in that a previous correction undertaken with RCVD approval has now been deemed inadequate. This is the basis of items 1 &4 in Derek Knapp's memo. Based upon a field review of the existing conditions with RCWD staff it is my opinion that the most effective method of limiting by-pass runoff to the in-place drainage structures would be to modify the roadway surface of 39th Ave.extended. This driveway currently has adverse slope and crown that directs runoff that does not reach the gutter away from the catch basins. This condition existed prior to the re-development project and the 391"Ave extension was not part the re-platting or re-development.