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� ORON� CQPY �Bonestroo <br /> Memorandum �� �n� <br /> 2335 Highway 36 W <br /> ro: Darren Amundsen Project: 4099 Highwood Road Date: 11-3-11 St.Paul,MN 55113 <br /> Tel 651-636-4600 <br /> From: Phil Cdswell Client: City Of Orono Fax 651-636-1311 <br /> Re: 2011-01336 File No: 000139-11000-1 WWW stantec.com <br /> Project Review Information Summary: <br /> Project Name/Location: 4099 Highwood Road <br /> Developer/Property Owner: Seran <br /> Design Engineer/Firm: Cameron Roberson —Sole Proprietor (MN#43483) <br /> Documents Reviewed: Site Plan (2008) with Proposed Wall Layout (2011) <br /> Design Wall Cross Section <br /> Segmental Retaining Wall Design Calculations (7' Ht.) <br /> Segmental Retaining Wall Design Calculations (2-Tier) <br /> Date Received: At City of Orono, 10-28-11 <br /> Project Review Comments: <br /> 1. Project includes privately-owned modular block/segmental landscape retaining <br /> walls that will be installed at 4099 Highwood Road. <br /> 2. Site drawing submitted shows the wall layout relative to boundaries, buildings and <br /> other site features. Deviation from this layout is not approved. <br /> 3. A geotechnical report and recommendations were not provided. Soil properties <br /> for the retaining wall were assumed in the calculations submitted. <br /> 4. Plans were prepared by a professional engineer, licensed in Minnesota, and plan <br /> content appears appropriate to direct retaining wall construction. <br /> 5. Calculations for global/slope stability were not submitted. Applicant shall have <br /> actual site conditions evaluated by a qualified design professional to determine <br /> whether or not global stability analysis is required. Submit determination in <br /> writing. <br /> 6. Applicant shall ensure that backfiil design properties indicated on the plans are <br /> verified by an independent testing lab, including: <br /> a. Soil gradation meets specifications. <br /> b. Soil plasticity meets specifications. <br /> c. Backfill soils have a peak effective friction angle > 34 degrees, as <br /> determined by direct shear testing. <br /> d. Wall elevations, grades and back slope are verified to conform to design <br /> Submit documentation verifying conformance with backfill soil specifications to <br /> City. <br /> END OF COMMENTS <br />