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9/2/2020 <br /> <br />31 20 00 EARTH MOVING Page 6 of 13 <br />2.3 ACCESSORIES <br />A. Warning Tape: Acid- and alkali-resistant, polyethylene film warning tape manufactured for <br />marking and identifying underground utilities, 6 incheswide and 4 milsthick, continuously <br />inscribed with a description of the utility; colored as follows: <br />1. Red: Electric. <br />2. Yellow: Gas, oil, steam, and dangerous materials. <br />3. Orange: Telephone and other communications. <br />4. Blue: Water systems. <br />5. Green: Sewer systems. <br />PART 3 - EXECUTION <br />3.1 PREPARATION <br />A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by <br />settlement, lateral movement, undermining, washout, and other hazards created by earth-moving <br />operations. <br />B. Protect and maintain erosion and sedimentation controls during earth-moving operations. <br />C. Protect subgrades and foundation soils from freezing temperatures and frost. Remove temporary <br />protection before placing subsequent materials. <br />3.2 DEWATERING <br />A. Prevent surface water and ground water from entering excavations, from ponding on prepared <br />subgrades, and from flooding Project site and surrounding area. <br />B. Protect subgrades from softening, undermining, washout, and damage by rain or water <br />accumulation. <br />1. Reroute surface water runoff away from excavated areas. Do not allow water to accumulate <br />in excavations. Do not use excavated trenches as temporary drainage ditches. <br />3.3 EXPLOSIVES <br />A. Explosives: Do not use explosives. <br />3.4 EXCAVATION, GENERAL <br />A. Classified Excavation: Excavate to subgrade elevations. Material to be excavated will be <br />classified as earth and rock. Do not excavate rock until it has been classified and cross sectioned <br />by Engineer. The Contract Sum will be adjusted for rock excavation according to unit prices <br />included in the Contract Documents. Changes in the Contract Time may be authorized for rock <br />excavation. <br />DocuSign Envelope ID: 7D9ACD4F-8F6C-42B6-9ADB-C60032DB6D03