Agenda - Council - 05/28/1985 - Laserfiche WebLink

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I I I i I I I I I I I I I ! I I I I I Chairman LeLeux Inquired as to bow much digging and levelling would be involved in the mining process. ~r. Miller ~tated that the minin9 would be phased in 5 ac~e incr~ents. Initially, the topsoil fr~ Phase 1 would be stripped, at an average cut of 9.2', and stockpiled; when the borrow material is removed fr~m Phase 1, the prooess will move on to Phase 2! the topsoil fr~m Phase 1 will be placed on Phase 1 and vegetated. That prooess would contin~ through the entire plat leaving Phase 5 and 10 as the last to be worked as they are buffer areas. The plat to be mined is 40+ acres in size and the outside slopes would be left at a 4:1 ratio; the overall project will not be detrimental to the paroel from a standpoint of saleability and developability. Mr. Fountain inquired if Waste Management of Minnesota has an engir~cring report that says the soils in the proposed borrow area are not suitable for cover material. Mr. Miller replied that the first analysis prepared regarding the soils stated that the soils were on a fine line between passin9 and not passing County requirements. Sinoe that time, 55 more soil borings and extensive analysis on the materials have been performed and the result is that the materials do fulfill County requirements for middle earthen and topsoil oover. Chairman LeLeux i~quired if the adequacies of the cover material will be monitored. Mr. Miller replied that the adequacy of the soils has already been documented in those 55 soil borings. Mr. Fountain irguired if the cover material will be taken from that South 80 parcel only. Mr. Miller replied that the 55 soil borings were taken on the South 80, North 80 and existing stockpiles; oover material will o0me from all these places. Mr. Wentura noted that Waste Management of Minnesota appears to be having probl~as vegetating that west portion of the landfill. Mr. Miller replied that the west side appears to have better results with spring seeding rather than fall seeding; Waste Management has been testing that area extensively for signs of methane migration but nothing shows ~p. Mr. Miller stated that Waste Management has been testing different types of fertilizers to be used in that area but has not received MP~ approval to proceed as yet. Mr. Wentura stated that the situation on the west side substantiates that adequate oover is r~essary for good vegetation. Mr. Miller stated that the soil types required in the new County Ordinance are more acceptable to vegetation; the quality of soil contained in the South 80 parcel is ~c~ for good vegetation. May 20, 1985 Page 3 of 11