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Bonestroo <br />Rosene <br />Anderlik & <br />Associates <br />Engineers & Architects <br />January 28, 1988 <br />City of Orono <br />Box 66 <br />Crystal Bay, MN 55323 <br />Attn: Mr John Gerhardson <br />Re: Hackberry Park Well <br />Orono, MN <br />File No. 13932 <br />Dear John: <br />Otto G 8onestroo. PE <br />Keith A Gordon. PE <br />Thomas W Peterson. PE <br />Robert W Rosen, PE <br />Rrcfsard Ur Foster. PE <br />Michael C Lynich. PE <br />Joseph C Anderbk. PE <br />Donald C Surgardt. PE <br />James R Maland, PE <br />Bradford A Lemberg. PE <br />lerry A Bourdon, PE <br />Kenneth P Anderson, PE <br />RKhard E Tumer, PIP <br />Mark A Hanson. PE <br />Keith A Bachmann. PE <br />James C Olson. PE <br />Ted K Field. PE <br />Mark R Rolls, PE <br />Glenn R Cook. PE <br />Michael T Rautmann. PE <br />Robert C Russell. A 1 A <br />Thomas E Noyes. PE <br />Robert R Pfefferle. PE <br />Thomas E Angus, PE <br />Robert G Schurncht, PE <br />Dawd O Loskota. PE <br />Howard A Sanford, PE <br />Marvm L Sorvala. PE <br />NUNCIL MEETING <br />F78 - 81988 <br />CITY OF ORQ." <br />Charles A ErKksOn <br />Leo M Pawelsky <br />Harlan M Olson <br />Susan M Ebeo�h <br />Mark A Se-p <br />Enclosed is request for payment No. 1 for approval.The payment request lists <br />Change Order No. 1 which is being sent to the City through the Contractor. <br />Change order No. 1, includes reducing the pump column pipe from 2 to 1 1/2 to <br />allow more room for power cables. The pump furnished for this project has a <br />steep preformance curve and the reduction in column size has no effect on well <br />capacity. We therefore recommend that the change be approved. <br />The project specifications assumed that a suitable gravel layer for the well <br />would be found at appruximatley 200 feet. The actual gravel layer (aquifer) <br />was found at 230 to ^_58 feet and the 8 feet long screen was set at 241 feet. <br />Therefore, the quanties for drilling, casing and screen are more than listed <br />on the original proposal. The cost due to the additional depth is $731.00 for <br />an increase in project cost of 6%. <br />The project was essentially completed in late December. The only work re- <br />maining are the concrete slabs around the pitless and street washer. We re- <br />commend that 5% retainage be held until remaiT,ing items are completed in the <br />spring. <br />Yours very truly, <br />BONESTR00, ROSENE, ANDERLIK S ASSOCIATES, INC. <br />Richard W. Foster <br />FWF:br <br />8014f <br />2335 West Highway 36 • St. Paul, Minnesota 55113 • 612-636-4600 <br />