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Hakanson <br />Anderson <br />Assoc., Inc. <br /> <br />3601 Thurston Avenue, Suite 101, Anok~, MN 55303 <br />Phone: 763/427-5860 Fax: 763/4:27-0520 <br /> <br />MEMORANDUM <br /> <br />To: Brian Olson, City Engineer <br />From: Craig Jochum <br />Date: February 21, 2002 <br />Re: Trunk Utilities and Trail Construction Plan Review for Alpine Drive <br />Cc: Dwight Jelle, P.E. <br /> <br />The following is a list of our comments regarding the construction plans review for Trunk <br />Utilities and Trail for Alpine Drive: <br /> <br />CONSTRUCTION DETAILS (SHEET 3), <br /> <br />1. Pavement design - current Mn/DOT recommendations for Iow volume roads <br /> (AADT<_2300) recommends LVWE35030E for wear course for virgin material. If <br /> the mix has RAP the "B" or PG 58-28 can be used. Also the Number 4 <br /> aggregate can be substituted for Number 3. <br /> <br />2. The bituminous path shall be constructed with wearing course bituminous <br /> <br />3. Specify the widths of subgrade and aggregate base in typical sections. <br />EXISTING TOPOGRAPHY AND MISCELANEOUS REMOVALS (SHEETS 4 TO 5~ <br /> <br />4, Is 152"d Lane N.W, an existing street? If so, shOw the removals necessary. <br /> <br />5, Label all structures to be moved by others, <br /> <br />SANITARY SEWER AND WATERMAIN CONSTRUCTION PLANS (,SHEETS 6 TO <br /> <br />7, <br /> <br />8. <br /> <br />9, <br /> <br />Eliminate the 45° bend from MH5. <br /> <br />Verify pipe grades and invert elevations (example MH-4 t° MH-3), <br />Label all watermain valves and fittings. <br /> <br />Show all existing utilities. <br /> <br />10, <br /> <br />How is the existing watermain going to be protected while constructing the <br />sanitary sewer from MH-2 to MH-I? How is the existing storm sewer going to be <br />protected? Sewer is considerable deeper than the existing utilities, It appears <br />that the existing utilities may need to be removed and reinstalled. <br /> <br /> Engineering <br /> <br />Page 1 of 2 -105- <br /> <br /> <br />