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fill, isolated swale bottom locations, isolated locations for pipe installations and as <br />approved by the engineer shall be paid for as subsoil excavation. Approximately 2.0 ft <br />of subsoil excavation is required in sublateral canals. Cost of replacement <br />embankment shall be included in cost of subsoil excavation. Contractor shall <br />coordinate with county representative prior to any subsoil excavation. <br />D. Embankment - General Requirements for Embankment Materials: The following is <br />added after the first paragraph of Subarticle 120-7.2: <br />Roadway Design Standard Index No. 505, Embankment Utilization Details is modified <br />by the addition of the following: <br />Any stratum or stockpile or soil which contains obvious pockets of highly organic <br />material may be designated as muck or unsuitable for construction of subgrade by the <br />Owner. <br />Backfill material containing more than 2.0% by weight of organic material, as <br />determined by FM 1-T 267 and by averaging the test results for three randomly <br />selected samples from each stratum or stockpile of a particular material, shall not be <br />used in construction of the reinforced volume. If an individual test value of the three <br />samples exceeds 3.0%, the stratum or stockpile will not be suitable for construction of <br />the reinforced volume. <br />No A-8 material permitted in embankment. <br />E. Payment sha!l be made under: <br />Bid Item No. 120-1 — Regular Excavation — Per Cubic Yard <br />Bid Item No. 120-6 - Embankment (Compacted in Place) - Per Cubic Yard <br />SECTION -160 STABILIZING <br />A. Section 160 is modified by the addition of the following: <br />"The stabilization thickness indicated on plans shall be considered a minimum <br />thickness. Thickness will vary to conform to the lines, and grades shown in the plans." <br />Minimum L.B.R. = 40 - No under -tolerance. <br />B. Payment shall be made under: <br />Bid Item No. 160-4-1- Stabilization (Type "B", 12" Subgrade, LBR40) - Per Square Yard <br />SECTION - 285 OPTIONAL BASE COURSE <br />A. Sub Article 285-4 is modified by the addition of the following: <br />Base material, thickness and requirements are described in the construction plans. <br />01025-25 Technical Specifications <br />F:\Public Works\ENGINEERING DIVISION PROJECTS\0225 20th Ave and 16th St Intersection Improvement\Admim\bid <br />documents\Master Contract Documents\Technical Specifications.doc <br />Per Ton <br />Bid Item No. 334-1-13A — Superpave Asphaltic Concrete (Type SP 9.5, 1-1/4" <br />Thick) — Per Square Yard <br />