04-03-2003 Council Work Session - Laserfiche WebLink

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^ m Bonestroo Rosene Anderlik& Associates Engineers & Architects March 27,2003 Boncttroo, Rotrnr. Anderlilt ««nd AtsocMtei. Inc. It Jn Afrirm^liwc Acfipn/r()y^f Opporfyniiy employer And employee Owned PrtncipAlt Otto G BoreM»oo Pf • M.i'vm I Sorv.d t PF • Oierm R foofc PF • G Schyntfhi Pf • h rrj, A Bourdon. Pf • A M.inion Pt Senior ContullAnit Rotert W Roicnr PF • Jouph C Ardrrnfc PI • Ru^.rrdt Turner PE • Sui.«ri M tOerim CPA AttocMie PrincipAft Kerfh A Gordon Pf • Rotj^rf R pfi-rrcrc PF • R.ch.ifdUr Fo.tef Pf • Q.«vid O LoUotA PC • Muh.wi r R»«iimAr>n P£ • Trd K field Pf • Rrf^nrfh P Anm r von Pf • Vt fc » Rodv Pt • D.«vid A Buneitroo MBA • VuJru/ P Willi.imvon Pf . l S • Agnei M R ruj MBA • A.i.m P.<> Sd.rr. j| P[ • fnom.fv Pctc'ion PI • jMfiri P M.tl.md Pf • Milet 6 ieoven PC • i Phillip Gr.«vrl ill Pf • D.m*el J tJgrrton. Pt • lsm««cl Martme/ PC • lrv,fTMv A Syffco Pt • sneldori J iohrvon • OAfr» A Grove. PE • Thom,tv A Rouih^r. Pt • Robert J Devery. Pf Office* Si P.ryl, St C*oyd Rnthettrr ,in«| a'liim.ir MN • M4iw<Hil>ee. • Chicago it M^btife ww ^ boneitroo corr* Mr. Ron Moorsc City Administrator CityofOrono Post OfTice Box 66 Crystal Bay. MN 55323 cinre. Rc: Professional Properties of Orono File No. 139-03-000 Plat No. 02-2782 Dear Ron: We have reviewed the geotechnical report (GMF Consultants, Inc. dated Sept. 19,2002) and cost estimates for soils corrections (VP Hnterpriscs of Minnesota dated March 26,2003) for the Professional Properties building. The cost estimate contains six line items identifying costs associated with the site work. We arc writing in regards to line item #3 (building pad) and line item #4 (parking lot). The costs associated with line item #3, building pad, stale that bceause of the poor native soils the contractor will need to remove 5-fcct of material over the entire building pad site. The total building pad site is appro.ximatcly 16,000 square feet equating to excavating appro.ximatcly 3000 cubic yards (CY) of material and replacing it with granular material. The soils report identifies the estimated minimum depth of subcutling for the six soil Iwrings taken under the building pad (table on page 10 in the GMH report). 1 he average depth of the subcul recommended was 2.9-fcel over the building pad and additional depths under the perimeter footings. The depth under the footings is for stability and frosi protcciion and is standard in any new building construction. Taking the average depth of subcut to be 2.9-fcct the total excavation required for soils corrections is approximately 1750 CY. Line item 1/4 states the parking lot will be subcut 1-foot below the proposed gravel base. This agrees with t>pical sections used on the construction of the adjacent Kelley Parkway and also agrees with our site impiovement cost estimate dated September 25,2002. Our cost estimate assumed the site would need l-foot of select granular under ait paiking ioi areas ucfoie we received the geoieeiinical tepori. Oar as.^umpllons were based on visual site inspection and similar projects in the area It is clear given the .surrounding properties, the possible wetland on site, and the findings of the geotechnical report that a high ground water table and organic soils would be present on this site. The additional costs associated with construction on this site are t>pical for this area. In general, wc do not feel that there arc any suriiriscs in the soils rc|xm that a trained professional would not anticipate after a general review of the project site. Please contact me at (651) 604-4863 if you have any questions regarding this rnatlcr. ^'ours vciy truly, liONhSTROO. ROSENE. ANDERLIK & ASSOCIATES. INC.’* ’ * I homas P. Kellogg. P.E. 2335 West Highway 36 • St. Paul. MN 5SII3* 651-636-4600 ■ Fax: 65l-636-f3U '