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Ms. Katie Larsen <br />10/02/2024 <br />Page 2 <br />Java Properties - Lino Retail 2.0 Engineering Review <br />•Grading <br />A grading and drainage plan was provided for the site including paved areas, curb, and <br />retaining walls. <br />Comments: <br />1.Watershed district approval for the City project is still pending. Additional stormwater <br />features may be required as a result of the final review. <br />2.Call out all EOFs from site stormwater basins, existing and proposed. <br />3.Tip-in curb and gutter on islands of the parking lot for Building B will result in ponded <br />water, specify tip-out. <br />4.Shift the sidewalk on the west side of the driveway south towards the roadway in <br />order to eliminate the retaining wall in the City basin. <br />5.Retaining walls will require permitting through the City separate from the building <br />permit. <br />6.Provide Emergency Overflow (EOF) elevations for all low points in the parking or <br />green space areas. <br />•Stormwater Management <br />Stormwater management for the Lino Retail 2.0 site consists of infiltration basins for the <br />southern and northern lots. Additionally, some stormwater infrastructure is proposed for the <br />City realignment of Marketplace Drive. Existing and proposed discharge rates are <br />summarized below. <br />Pre- and Post- Development Discharge Rates (cfs) <br />Condition 2-Year 10-Year 100-Year 10-Day Snowmelt <br />Existing 0.00 0.35 5.98 Needed if basins <br />landlocked <br />Currently <br />Proposed 0.00 0.18 4.90 Needed if basins <br />landlocked <br />Comments: <br />1.An approximate City storm sewer alignment is marked up on the plans showing the <br />pipe intended to provide an outflow for the site rather than emergency overflows. The <br />northern infiltration basin shall outlet into the pipe. <br />2.Remove the City infiltration basin between the roadway and parking lot, the basin <br />west of the driveway access will provide sufficient storage for runoff.