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The work covered by this section consists of furnishing, placing, and securing mulch material for the prevention of excessive soil erosion during construction operations where it is impossible or impractical to perform permanent seeding and mulching.
The quantity of mulching to be placed will be affected by the actual conditions which occur during the construction of the project. The quantity of mulching may be increased, decreased, or eliminated entirely at the direction of the Engineer. Such variations in quantity will not be considered as alterations in the details of construction or a change in the character of work.
All materials shall meet the requirements of Division 10 shown below:
Mulch for erosion control Article 1060-5
Temporary mulch shall be placed promptly at locations on temporarily seeded or non-seeded areas when so directed by the Engineer.
Mulch shall be spread uniformly over the area by hand or by means of appropriate mechanical spreaders or blowers to obtain an application satisfactory to the Engineer. Satisfactory application of temporary mulch on non-seeded areas shall be a sufficient amount to completely cover the ground.
When temporary mulching is being performed in conjunction when temporary seeding, the mulch shall be applied in accordance with Article 16606. No seeded areas shall be allowed to remain more than 24 hours without having mulching completed. Care shall be exercised to prevent displacement of soil and seed or other damage to areas where temporary seeding has been done.
When using grain straw, the Contractor shall apply a sufficient amount of asphalt or other type binding material to assure that the temporary mulch is properly held in place.
During the application of asphalt binding material, or other approved binding materials which may cause damage, adequate precautions shall be taken to prevent damage to traffic, structures, guardrails, traffic control devices, or any other appurtenances. The Contractor shall either provide adequate covering or change methods of application as required to avoid such damage. When such damage occurs the Contractor shall repair it, including any cleaning that may be necessary.
The Contractor shall take sufficient precautions to prevent mulch from entering drainage structures through displacement by wind, water, or other causes and shall promptly remove any blockage to drainage facilities which may occur.
The quantity of temporary mulching to be paid for will be the number of acres, measured along the surface of the ground over which temporary mulch has been placed as directed and accepted by the Engineer.
The quantity of temporary mulching is to be paid for at the contract unit price per acre for "Temporary Mulching".
The above price and payment will be full compensation for all work covered by this section including but not limited to furnishing all mulch, asphalt, and other materials; applying mulch; and holding mulch.
Payment will be made under:
Temporary Mulching Acre