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guarantee period and such guarantee shall be extended until notification is received. At the end of the guarantee period, all sod that is dead or in unsatisfactory growth shall be replaced within two weeks. Fertilizer: Commercial fertilizers shall comply with the state fertilizer laws. The numerical designations for fertilizer indicate the minimum percentages (respectively) of (1) total nitrogen, (2) available phosphoric acid and (3) water-soluble potash contained in the fertilizer. The chemical designation of the fertilizer shall be 16-4=8. Fertilizer shall include iron, minor nutrients and trace elements. At least 50 percent of the nitrogen shall be derived from organic sources. At least 50 percent of the phosphoric acid shall be from normal super phosphate or an equivalent source which will provide a minimum of two units of sulfur. The amount of sulfur shall be indicated on the quantitative analysis card attached to each bag or other cont-a-iner. Contractor shall ensure 1 pound of nitrogen per 1,000 square feet. E Water for Grassing: Contractor shall provide the water used in the sodding operations as necessary to meet the requirements of Article 570-5 and 2.34.B. F Preparation of Ground: The area over which the sod is to be placed shall be scarified or loosened to a depth and then raked smooth and free from debris. Where the soil is sufficiently loose and clean, the Owner, at his discretion, may authorize the elimination of ground preparation. G. Application of Fertilizer: Before applying fertilizer, the soil pH shall be brought to a range of6.0-7.0. Contractor shall apply two (2) applications. The initial shall be fertilizer and the second application shall be `weed and feed". The fertilizer shall be spread uniformly over the sodded area at the rate of 436 pounds per acre, or 10 pounds per 1,000 square feet, by a spreading device capable of uniformly distributing the material at the specified rate. Contractor shall apply applications as per manufacturer's specification. All tickets from bags shall be handed over to the County Inspector. On steep slopes, where the use of a machine for spreading or mixing is not practicable, the fertilizer shall be spread by hand and raked in and thoroughly mixed with the soil to a depth of approximately 2 inches. H. Placing Sod: The sod shall be placed on the prepared surface, with edges in close contact and shall be firmly and smoothly embedded by light tamping with appropriate tools. Where sodding is used in drainage ditches, the setting of the pieces shall be staggered so as to avoid a continuous seam along the line of flow. Along the edges of such staggered areas, the offsets of individual strips shall not exceed 6 inches In order to prevent erosion caused by vertical edges at the outer limits, the outer pieces of sod shall be tamped so as to produce a featheredge effect. Where sodding is placed abutting paved shoulder, the contractor is to ensure that the finished sod elevation is VA" below paved shoulder. On slopes greater than 3:1, the Contractor shall prevent the sod from sliding by means of wooden pegs driven through the sod blocks into firm earth, at suitable intervals. 01025-15 Technical Specifications - Addendum 1 F:\Public Works\ENGINEERING DIVISION PROJECTS\1302-IR Blvd Resurfacing (SCOP) US1 to 17th St\Admim\bid documents\Addendum #1\Technical Specifications Add 1.doc