227Hydroseeding

227.02 Materials. The Contractor shall, prior to ap plication, furnish the Engineer with

invoices of all materials used in the grassing operation.

227.02.1 Fertilizers. Fertilizers for purposes of these specifications shall be understood

to include standard manufactured products consisting of single or combination ingredients. All fertilizers shall comply with the State fertilizer laws and Subsection 715.02.

227.02.2 Seeds. Seeds shall meet the requirements of Subsection 715.03, subject to the

provisions of this subsection. The Contractor shall acquire seed from persons registered with the MDAC. Except for the germination requirements, bags of seeds properly labeled or tagged according to law and indicating characteristics meeting or exceeding the requirements of Subsection 715.03 will be acceptable for planting. The Contractor should provide adequate dry storage facilities for seeds, and shall furnish access to the storage for sampling stored seed.

227.02.3 Mulching. Mulch shall meet the requirements of Subsection 215.02.1.

227.03 Construction Requirements.

227.03.1 Ground Preparation. Light ground preparation consists of plowing,

loosening, and pulverizing the soil to form suitable beds for seeding items in reasonably close conformity with the established lines and grades without appreciable humps or depressions. Unless otherwise specified, the pulverized and prepared seedbed should be at least four inches deep and shall be reasonably free of large clods, earth balls, boulders, stumps, roots and other objectionable matter. The Engineer may eliminate or alter the requirements for ground preparation due to site conditions.

227.03.2 Fertilizing. The Contractor shall furnish all equipment necessary to properly

handle, store, uniformly spread, and incorporate the specified application of fertilizer. The Contractor shall incorporate bag fertilizer at a rate of 1000 pounds per acre of 13-13- 13 commercial fertilizer. The equivalent rate of other type fertilizers will be allowed if the equivalent percentages of Nitrogen, Phosphorus and Potassium are obtained. Any changes in the type or rate of application of the fertilizers shall be approved by the Engineer prior to being incorporated. Agricultural limestone will be incorporated in to the area and paid for in accordance with Section 213 of the Standard Specifications.

227.03.3 Seeding.

227.03.3 1--General. The Contractor shall use the vegetation schedule in the plan for the

correct types of seed and application rates, unless otherwise noted or approved by the Engineer. When a vegetation schedule for permanent grass is not shown in the plans, the following types of seed and application rates shall be used, unless otherwise approved by the Engineer. Bermudagrass ---------------------- 20 pounds per acre Bahiagrass -------------------------- 25 pounds per acre Tall Fescue -------------------------- 15 pounds per acre Crimson Clover -------------------- 20 pounds per acre At the completion of the project, a satisfactor y growth of grass will be required. The Contractor should reference Subsection 210 for satisfactory growth and coverage of dormant seed.

227.03.3 2--Plant Establishment. The Contractor should provide plant establishment on

all areas seeded until release of maintenance. Plant establishment shall consist of preserving, protecting, watering, reseeding, mowing, and other work necessary to keep the seeded areas in satisfactory condition. Plant establishment should be provided for a minimum period of 45 calendar days after completion of seeding. In the event satisfactory growth and coverage has not been attained by the end of the 45-day period, plant establishment should be continued until a