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Ms. Katie Larsen <br />10/03/2025 <br />Page 4 <br />Erickson Property Development - Engineering Review <br />WSB (9/26/2025) Retaining walls are most likely required (limited easement) <br />to transition from the proposed temporary elevations to the future proposed <br />elevations with the extension of the road <br />Landform (9/30/2025) See the exhibit included in this resubmittal for future <br />grading. <br />WSB (10/3/2025) Update grading exhibit and identify future ‘shaded’ areas to <br />be impacted. Magenta elevations and contours are current, red elevations are <br />future. Update grading plan. <br /> <br />b. Further discussion regarding retaining wall location, ownership, and future <br />maintenance will be required <br /> <br />c. Retaining walls exceeding 4’ in height shall require a plan prepared by a <br />Minnesota licensed structural engineer submitted for review and approval by <br />the Building Official prior to permit issuance <br />i. Provide fences for safety as required. <br /> <br />7. Driveways/Garages will need to be on the southern sides of the two most northern <br />lots with the temporary cul de sac. <br />Landform (8/11/2025) Updated - See plans <br />WSB (9/3/2025) Driveway slopes do not appear adjusted <br />Landform (8/11/2025) Driveways have been adjusted see sheet C2.1 and revised <br />plans. <br />WSB (9/26/2025) Complete <br /> <br />8. WSB (9/3/25) – Block 1 lot elevations must maintain 2’ of freeboard to the pond <br />100-yr HWL of 905.55. Lots 1 and 2 do not have sufficient vertical separation <br />with basement elevations of 907.0 and 907.5. <br />Landform (8/11/2025) Block 1 pads 1 & 2 have been adjusted so the LFE is 2' <br />above the HWL. See sheet C3.1. <br />WSB (9/26/2025) Complete <br /> <br />9. WSB (9/3/25) Provide additional easement for utilities outside the right of way <br />a. Easements need to meet a 1:1 slope with the invert of the utility with a <br />minimum of 20' centered on the easement <br />Landform (8/11/2025) 20' utility easement provided between lots 1 & 2. See <br />sheet C2.1 <br />WSB (9/26/2025) Complete <br /> <br />10. WSB (9/3/25) Swales should be shown to occur along side property lines <br />Landform (8/11/2025) Grading has been updated to include swales along <br />property lines, see sheet C3.1. <br />WSB (9/26/2025) Complete <br /> <br /> <br />• Stormwater Management <br /> <br />Stormwater management for the Erickson Property site consists of a sedimentation basin to <br />provide treatment. Existing and proposed discharge rates are summarized below. <br /> <br />Page 123 of 145