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BONESTROO ASSOCIATES ^6126361311 OA/11/96 10:25 9 :02/02 NO:801 <br />Ms. Jeanne A. Mahusth <br />City of Orono <br />Pa^e *2* <br />April 10, 1990 <br />capacity of 800 people. The proposal to bijaic parking spaces with the school may <br />be an acceptable solution on game nights. A paved trail should be constructed as <br />shown on the plans. Because the school plans to use the arena parking lots during <br />the day there should also be an additional paved trail between the west parking lot <br />and the school entrance. <br />4. Grading: The grading plan is acceptable. The recommendations discussed in GME <br />Consultaut's geotechnical exploration report should be implemented during <br />constniction. The pavement section for the parking areas is acceptable, however we <br />would recommend at least 3 inches of pavement with 8 inches of aggregate base. <br />This would allow the pavement to be done in two lifts. The second lift should be <br />done the following year after initial settlements are repaired. The driving lanes <br />within the parking lot should be a 9 ton design based on an R-value of 10. Because <br />of the poor soil conditions at the site, the pavement section should include a non* <br />woven geotextile fabric and draintile lines connected at the catch basins. This will <br />provide separation between the aggregate base and soft clay subgrade and some <br />relief from the effects of shallow groundwater. The gcotextile fabric may not be <br />necessary if the upper 2.5 feet of the subgrade below the. gravel base consists of <br />select granular soil, as recommended in the GME report. Tlie proposal to delay the <br />pavement and concrete curb for one year may be allowable due to the. site <br />conditions. The soils found at boring 95-4 (near the wetland) are considerably worse <br />than at other areas on the site and it is wise to avoid construction there. <br />5. Screening: ITie planting plan appears adequate. <br />6. Easements: Please see our January 5, 1996 comments regarding easements <br />7. Financial Guarantee: We have not yet prepared an estimate of the total cost for the <br />.site improvements to determine the amount of the financial guarantee required. <br />Please contact me at this office if you have any questions regarding this matter. <br />Yours very truly, <br />BONESTROO. ROSENE, ANDERLIK St ASSOCIATES, INC. <br />ShawTi D. Gustafson, P.E.