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<br />Lexington-Broadway Stormwater Imp. Phase 1 6 Scope of Services <br />perform the work such as traffic control plans and staging areas. The work plan will also be <br />used for utility locating clearances and permitting that may be necessary to access the <br />exploration locations. <br />2. Coordinate with a subcontracted traffic control firm to develop site-specific traffic control <br />plans for each proposed geotechnical exploration. The subcontractor’s certified traffic <br />control supervisor will stamp each traffic control plan. HWA will review each plan prior to <br />distribution to the team. One revision is assumed to be required for the right-of-way (ROW) <br />use permit application and approval process. <br />3. Obtain a City of Everett street use permit for drilling in the ROW. This includes developing <br />appropriate traffic control plans for the proposed drilling. <br />4. Conduct utility locates for the proposed borings. Visit the site to mark drilling locations with <br />white paint and notify the on-call utility service. An additional site visit will be performed to <br />verify if the proposed locations of the borings are clear of utilities prior to mobilizing the <br />drilling equipment. Additionally, a private locating service will be used to have conductible <br />underground utilities located in the vicinity of the proposed borings. Polyvinyl chloride (PVC) <br />and concrete non-conductible utilities cannot be located with these methods. <br />5. Conduct up to three geotechnical borings with a truck-/trailer-mounted drill rig equipped with <br />a hollow-stem auger. Borings will be drilled to depths ranging from 25 to 40 feet below <br />ground surface (bgs). Two borings will be advanced at two selected locations where <br />excavations on the order of about 20 feet bgs are anticipated along Lenora Street; the other <br />boring will be advanced near the proposed retaining wall for the treatment facility. Two <br />monitoring wells will be installed within these borings to evaluate and monitor groundwater <br />conditions. <br />6. Standard Penetration Test (SPT) samples will be taken at 2.5- to 5.0-foot intervals <br />throughout each boring. All borings will be monitored and logged under full-time observation <br />of a representative of the geotechnical engineer. The borings will be drilled by a licensed <br />driller under subcontract to the geotechnical engineer. <br />7. Generate boring logs and perform laboratory testing of select samples from the borings. <br />Testing may include moisture content, grain-size distribution, and Atterberg limits. Soil and <br />laboratory test information will be presented in summary boring logs that will be generated <br />upon completion of the exploration program. <br />8. HWA will conduct up to five site visits over the first year of this contract to download <br />groundwater data from the existing transducer, located on the stormwater treatment site. <br />The water level information collected will be used to assist in developing recommendations <br />for possible dewatering and construction impacts. HWA will assist in developing dewatering <br />contract specifications for the bid package. <br />9. Should contaminated soil and/or groundwater be encountered HWA will halt the boring to <br />immediately notify the Consultant project manager and City project manager. Items A <br />through E listed below represent services outside of the scope of this contract. Payment for <br />work listed under items A through E would require approval from the City project manager