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PART 3 -- EXECUTION 3.01 GENERAL CONSTRUCTION METHODS Seeding and mulching operations will not be permitted when wind velocities exceed 15 miles per hour. Seed shall be sown only when the soil is moist and in proper condition to induce growth. No seeding shall be done when the ground is frozen, unduly wet, or otherwise not in a tillable condition. Whenever a suitable length of right-of-way or adjacent area has been graded, it shall be made ready, when directed by the Engineer, and grassed in accordance with these specifications. Grassing shall be incorporated into the project at the earliest practical time in the lift of the contract. 3.02 SODDING A. Preparation of Area to be Sodded: The ground which is to receive sod shall have been graded to proper elevations (2" below sodded grade) to match pre -construction conditions or proposed grades. All disturbed swales and ditches shall have been restored to their pre -construction condition or better. The pre -construction grade shall be maintained and the prepared soil shall be loose and reasonable smooth. It shall be reasonable free of large clods, roots, patches of existing grass, and other material which will interfere with the sod -laying operations or subsequent mowing and maintenance operations. B. Laying of Sod: Sod shall be installed in all areas so designated by Engineer. Sod shall be carefully placed so that each piece abuts flush to all surrounding sod, regardless of whether surrounding sod is new or existing. Where new sod is to be placed adjacent to existing sod, the new sod must be cut in to match the elevation of the existing sod. Uneven sod which might cause mowing problems will be rejected. New sod laid on top of existing sod will also be rejected. All sod placed on steep slopes (greater than 1:1) shall be pinned with a wooden pin to keep it in place. C. Rolling: Immediately after completion of the sod laying, the entire sodded area shall be rolled thoroughly with the equipment specified. At least two trips over the entire area will be required. D. Watering: Newly -sodded areas are to be watered by Contractor as necessary to keep sod alive until the Contractor is closed out. Dead sod shall be replaced by Contractor prior to contract closeout. 3.03 SEEDING A. Sequence of Operations: The operations involved in the work shall proceed in the following sequence: preparation of the ground, seeding, spreading, and cutting in mulch. 02485 Grassing.doc 02485-3 K:Q5-125 IRC 741h Ave Force Main-ARCHNEI&dding Contract SpecificationsZ24& Grassing.doc