#13 - Landscaping Requirements Top Soil - New Text Color

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Lake Elmo Developer Master 3292-2 Revision date: JANUARY 2022 2. SOIL PREPARATION Finished grades shall slope uniformly between elevations shown and shall meet flush with walks and pavement. Allow for the thickness of sod, as applicable. The finished Work shall be true, smooth and sightly. Topsoil shall be spread smooth but shall not be compacted. Topsoil shall be raked free of lumps and rocks to provide a smooth, mowable surface. Sticks, stones, and trash over one inch, shall be removed. The surface shall be finished to the designated slope and contour. The topsoil shall be loosened and thoroughly pulverized by discing to a depth of six inches. Fertilizer shall be spread and worked into the top six inches of soil during preparation. Apply fertilizer in two passes at approximately right angles to each other, each pass placing approximately half of the fertilizer. 3. SEEDING Seeding shall be done between April 1 and June 1 or between July 20 and September 20, except as otherwise may be allowed by the Engineer. Reseeding will be required as may be necessary to obtain a satisfactory stand of grass. Sow seed (for lawn areas) uniformly at the seed mixture specified application rate, adjusting for the certified purity and germination. Seeds are to be sown by hand operated or machine operated mechanical seeder, which shall continuously mix the seeds to prevent segregation. Seeding shall be performed in two passes at approximately right angles, each pass placing approximately half of the seed. Immediately after the seed has been sown, the entire area shall be raked lightly and rolled lightly to pack the soil firmly around the seed. 4. WOOD FIBER BLANKET Erosion control fabric shall be placed on all slopes at 3:1 or greater, where indicated on the plans, and in ditches. Erosion control fabric shall be placed over newly seeded areas within 24 hours of seeding. Install in accordance with the manufacturer's instructions, including spacing anchors. 5. MULCH Seeded areas shall be mulched and disc-anchored with the specified mulch type, except where plastic netting or hydraulic erosion control products for stabilization are specified. Mulch shall be spread by mechanical means to provide a uniform distribution at the target application rate. When poor mulch distribution occurs The Contractor will be required to remulch areas where coverage is too light and remove excess where coverage is too heavy, as determined by the Engineer. 6. SODDING Sod operations shall not be started until all necessary equipment, supplies, and labor forces are available to sufficiently place the sod without avoidable delays. Immediately before the sod is laid, the prepared bed shall be sprinkled until all of the loose material is moist. Sodding shall be done only when soil and weather conditions are favorable. The sod strips shall be carefully placed by hand beginning at the toes of the slopes and progressing upwards, the length of the strips as nearly as practical at right angles to the direction of the flow of the surface water. All joints shall be tightly butted and the end joints shall be staggered at least 12 inches. After sod has been placed, the sod shall be pressed into the underlying soil by rolling or tamping. The sod shall be pegged with suitable wood stakes as necessary to keep it in place. 7. MAINTENANCE The Contractor shall water and maintain seeded and sodded areas on a timely basis as the need arises and without the Engineer having to so order. Seed, Mulch, Erosion Control Fabric and Sod shall be maintained until final acceptance of the improvements by the City. The Contractor shall promptly replace all sod that dries out, or is damaged, displaced, or weakened, or is heavily infected by weed growth. Seeded areas shall be reseeded as necessary to establish a permanent vegetative cover acceptable to the City. END OF SECTION