1986-05-05 Letter, Proposed Curtain Drain

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r CITY of ORONO Post Ofte Box 66 • Cal BRy, Minnesota 55M • Mil Odkm On the North Shore o/ Lake Minnetonka May 5, 1986 VanEeckhout Building Corp. 1935 W. Wayzata Blvd. Long Lake, HN 55356 RE: Proposed Curtain Drain, 2200 Devin Lane Dear Mr. VanEeckhout, Regarding your proposal to construct a curtain drain at 2200 Devin Lane in order to attempt to artificially and permanently drain the soils in the drainfield location so that a trench drainfield can be constructed to sewer the home at this site, the following will apply: 1) A grading permit shall be obtained prior to commencing excavation since this is extra work not included in the original application and will require additional site inspection by staff. (Permit Fee $50.50) 2) The curtain drain may not extend into the area of the approved drainfield sites, so that should the artificial drainage attempts fail, the primary and alternate sites will still be suitable for a pressurized mound system as originally proposed. 3) If the curtain drain is to be tied in with the footing drains for the house, this must be reviewed and approved by Building Inspector Tom Jacobs. 4) A plan of the proposed curtain drain must be submitted when applying for the grading permit including the following: a) Site plan showing location of proposed curtain drain, showing the proposed outlet of such drain. b) Provide a cross-section of the curtain drain, showing the depths and nature of the materials to be used. c) Show the location and depth of monitoring borings which can be viewed by staff on a timely basis: i) Locate monitoring holes a) 40' north of the curtain drain and b) 40' west of the curtain drain and c) 20' east of the most easterly soil boring. ii) Also use existing boring holes in drainfield site for site monitoring. BUILDING! ZONING - 473.7357 U ADMINISTRATION At FINANCE - 473.7338 0 PUBLIC WORKS - 473-7339 ASSESSING