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Page 3 of 7 <br />shipped in flat sheets that measure 1 -meter (40") square. <br />2. Do not build on frozen work or wet, saturated or muddy subgrade. 56 39 <br />E. Protect partially completed paving against damage from other construction traffic when work is <br />in progress, and until grass root system has matured (about 3 to 4 weeks). Any barricades constructed <br />must still be accessible by emergency and fire equipment during and after installation. <br />F. Protect adjacent work from damage during Grasspave2 installation. <br />PART2-PRODUCTS <br />2.01 Availability <br />A. Manufacturer: (Grasspave2, Hydrogrow) Invisible Structures, Inc., 1600 Jackson Street., Suite <br />310, Golden, Colorado 80401. Call from USA and Canada 800-233-1510 toll free, International 303- <br />233-838J, Fax 303-233-8282. <br />B. Local Sales Representative: <br />(Contact Manufacturer) <br />2.02 MateriaLs <br />A. Base Course: Sandy gravel material from local sources commonly used for road base <br />construction, passing the following sieve analysis. <br />% Passine Sieve Size <br />100 3/4" <br />85 3/8" <br />60 #4 <br />30 #40 <br />< 3 #200 <br />1. Sources of the material can include either "pit run" or "crusher run." Crusher run material <br />will generally require sharp sand to be added to mixture (33% by volume) to ensure long term porosity. <br />If there is difficulty in finding local sources to meet this sieve analysis, and alternative mixture can be <br />created by mixing 2/3 crushed drainage rock (0.75" dia) with 1/3 concrete or river sand. <br />2. Selected materials should be nearly neutral in pH (range from 6.5 to 7.2) to provide adequate <br />root zone development for turf. <br />3. Alternative materials such as crushed shell, limerock, and/or crushed lava may be considered <br />for base course use, provided they are mixed with sharp sand (33%), and brought to proper compaction. <br />6/25/2007 <br />