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. Affi�AW� <br /> 9075 WCR 10 *Fort Lupton,CO 80621 <br /> PHONE:303-857-1754 <br /> FAX:303-857-2933 <br /> www.ncconstructors.com <br /> V. Concrete must have been in a hardened state for at least sixty (60) days prior to placing in <br /> a fill area. <br /> VI. Asphalt must be placed a minimum of three (3) feet above the groundwater table. <br />