#08 - At Home Apartments Premin Plat & PUD

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PAGE 3 of 5  Driveway layout and configuration must be improved for Block 2: Units 8 and 9, and Units 12 and 13. 9. Signing and Lighting Plan. The subdivision will require street lights to be installed per city standards at the intersection with 39th Street and at the end of cul‐de‐sac. Revise the plans by removing the photometric numbers from the street surfaces, removing the luminaire schedule, removing the calculation summary table, and removing the street fixture cut sheet. Add plan note to call out the street lights to be as follows:  Street Light Fixture: Traditional Colonial LED, Type B 4000 Lumens (Black).  Street Light Pole: 15‐ft Washington Fluted Black Aluminum Pole. 10. Signing and Lighting Plan. Revise No parking signage to include three (3) no parking signs per cul‐de‐sac using the city standard no parking sign, R8‐3 (12” x 12”). Add No Parking sign call out to the plans and add a sign schedule. 11. The Street and Storm Sewer Plans must be prepared meeting all city design standards and plan format requirements, including the use of city standard plan notes, details and specifications. GRADING PLANS, STORMWATER MANAGEMENT AND STORM SEWER SYSTEM 1. The proposed development is subject to a Stormwater Management Plan (SWMP) meeting State, Valley Branch Watershed District (VBWD) and city rules. A VBWD permit is required. Storm water facilities proposed as part of the development to meet State and watershed permitting requirements must be constructed in accordance with the City Engineering Design Standards Manual dated January 2022. 2. Approval of the Preliminary Plat/Plans for the development is contingent upon all SWMP revisions, as required by the VBWD or other applicable permitting agency, being submitted to the city for review and approval. 3. The existing and proposed drainage exhibits must be revised to incorporate all contributing drainage areas (on and off site), and must clearly show and label all points of discharge from the site. No discharge locations have been identified on the exhibits. 4. Rate and volume control requirements must be met for all points of discharge from the site. The storm water management plan must be revised as the plan currently shows the discharge to 39th Street storm sewer being exceeded in the post development condition. 5. The SWMP must be revised to provide a summary table of the 100‐year HWL elevation for each BMP, and for each catch basin low point. The grading plans must be revised to show the 100‐year HWL elevation at each catch basin low point including the 100‐year HWL contour. A note must be shown with the table indicating that the catch basin low point 100‐year HWL was determined using the limiting inlet capacity and not the pipe capacity. 6. The proposed BMP infiltration basin has been placed in Outlot A as required. Outlot A must be dedicated to city ownership for stormwater management. Outlot ownership must be shown on the Preliminary Plat and on the Grading, Utility and Site Plans. The grading plan must be revised to indicate that the storm water basin is an infiltration basin. 7. Overland emergency overflow (EOF) elevations are required throughout the site, requiring a system of interconnecting drainage ways. Low openings for adjacent structures must maintain 1‐foot above any adjacent EOF in the as‐built condition. 8. Approval of the preliminary grading plans for the development is contingent upon all grading plans being reviewed and approved by the City Engineer prior to the start of any grading or construction.  All drainage swales must be designed to meet a minimum 2% as‐built grade. Design grades must exceed 2% to account for construction tolerances. The grading plans must be revised accordingly.  The grading plans must be revised to show the proposed approved grading plan for the Lil Explorers daycare to ensure the two project designs are compatible.  Preliminary plat approval must be contingent upon the 100‐year HWL elevation/contour for all localized low points and catch basins being protected by drainage and utility easement dedicated on the Plat.  Revise the erosion control plans to show double silt fence around all BMPs and all stockpile sites.  Landscaping improvements must be closely coordinated with the preparation of the construction plans to ensure that tree plantings do not encroach drainage swales, EOF flow paths, utility easements, and pond access routes.