Site work for a mixed-use development in Anchorage, Alaska. Completed plans call for site work for a transportation facility.

Contract#: CFHWY00545-A Federal# / IRIS Program#: 0001656 / CFHWY00545-A Region: Central Region This federally funded contract will perform drilling on the Glenn Highway between Airport Heights and the Parks Highway. Drilling work is in support of gathering geotechnical design data. Approximately 127 on-road test holes will be drilled to 10 feet in depth and 23 off-road test holes to 20 feet in depth are planned. Field work will be supervised by an Engineering Geologist. On the Job Trainees/Apprentices (item 645): None Engineer's Estimate Range: Between $200,000 and $500,000 AKDOT - Glenn Highway: Airport Heights to Parks Highway Rehabilitation - Drilling Services *The value for this project is based on a financial range. The value is listed as the highest possible cost from the range provided by a stakeholder or official project document. Description of Work: The Alaska Department of Transportation and Public Facilities (DOT&PF) requests bids to perform drilling services for the project mentioned above between Anchorage and Wasilla, Alaska. Drilling for this project is in support of gathering design data. Field work will be supervised by a DOT&PF Central Region Materials (CRM) Engineering Geologist who may modify the number of test holes drilled, depth drilled, and location. DOT&PF will obtain any necessary Land Use Permits and perform the utility locates prior to drilling. Proposed Drilling: 1. On-Road Test Holes (Figures 1-17) a. One hundred twenty seven on-road test holes. b. Test holes will be drilled to ten feet below ground surface (BGS) using hollow stem auger. c. Traffic control is required for these test holes. See the approved Traffic Control Plan (TCP) attached. 2. Off-Road Test Holes (Figures 1-17) a. Twenty three off-road test holes. b. Twenty two test holes will be drilled to 20 feet BGS using hollow stem auger. c. One test hole will be drilled to 15 feet BGS and a 1-inch PVC standpipe shall be installed to monitor for groundwater levels. This test hole is located at the indicated corner of Muldoon Road and Glenn Highway intersection in Figure 2. d. Traffic control is required for these test holes. See approved TCP attached. e. Four foot by eight foot Geo-mats (six of these) will be needed for the tracked drill rig to use for working on soft and wet ground. Use of a winch to lower the drill rig down the embankment slope may be necessary to access some, if not all, of the drill sites. Winching to get back up the slope may also be necessary. The drill rig shall be fitted with a heavy duty winch and all necessary winching equipment (cables, pulleys, cable connectors, etc). Minor brush cutting may be necessary. General Soil Sampling Methods: 1. Samples will be collected at 2.5 foot intervals from the surface down to ten feet, and then at five foot intervals below ten feet to the bottom of the test hole, or at depths required by the CRM Engineering Geologist. 2. The number, location, and depth of the test holes may be increased or decreased depending on field data that is collected. Contractor shall provide hollow stem auger and tooling to accommodate additional drilling depth beyond what is specified. Surface and Subsurface Drilling Conditions: 1. The soil types for on-road sites are generally expected to be: a. Paved surface, over b. Gravelly sand fill, over c. Sand, gravel, or silt, with cobbles. d. Some organic, peat, clay, or silty soil may be encountered. e. Groundwater may or may not be encountered. 2. The soil types for off-road sites are generally expected to be: a. Vegetative mat, over b. Sand, gravel, or silt, with cobbles. c. Some organic, peat, clay, or silty soil may be encountered. d. Groundwater may or may not be encountered.