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Delta Conveyance Design & Construction Authority <br />Technical Memorandum <br />1 <br />Subject: Attachment 1 – Scope of Work Description <br />Project Task: Geotechnical Field Investigation within San Joaquin County <br />Prepared for: San Joaquin County Department of Public Works <br />Prepared by:Delta Conveyance Design & Construction Authority <br />Copies to: John Hinton <JohnHinton@dcdca.org>; Allan Davis <Allan.Davis@water.ca.gov> <br />Date/Version:June 03 2024 <br />1.1 Scope of Work <br />The Delta Conveyance Design & Construction Authority proposes to complete 42 soil borings at various <br />locations within San Joaquin County right-of-way (ROW). The borings will consist of pushing a 1.5-inch- <br />diameter conical probe vertically into the ground to a maximum depth of 250 feet. Disturbance of ground <br />will be limited to the vertical axis. The probe will not be used in lateral or radial fashions. The estimated <br />time to complete each soil boring is up to 8 hours, after which time shoulders and lanes will be released <br />to the public. Of the proposed borings, 13 will require traffic control measures, the remaining 29 are <br />placed off the road and away from the path of traffic. <br />The specific boring locations, utility clearance process, traffic control measures, and backfill methodology <br />are described in Section 1.1.1, Section 1.1.2, Section 1.1.3 and Section 1.1.4, respectively. <br />Boring Locations <br />The boring locations, as well as traffic control requirements for each, are provided in the table below. The <br />proposed locations of the borings are also shown on the attached exploration location exhibits. <br />Boring Identification Number Location Traffic Control Requirements <br />DCRDS-DH-285 Northbound House Road; paved <br />shoulder 1 mile south of Windmill Cove <br />Road and within 5 feet of ETW. <br />Lane closure on a minor street. <br />DCRDS-DH-286 Northbound House Road; paved <br />shoulder 1.1 miles south of Windmill <br />Cove Road and within 5 feet of Edge of <br />Traveled Way (ETW). <br />N/A – Boring is placed off the road and away <br />from the path of traffic. <br />DCRDS-DH-287 Westbound House Road, 950 feet east <br />of N Inland Drive; unpaved shoulder <br />within 5 feet of ETW. <br />Shoulder closure with minor encroachment. <br />DCRDS-DH-288 Westbound House Road, 1,600 feet <br />east of N Inland Drive; unpaved <br />shoulder within 5 feet of ETW. <br />Lane closure on a minor street. <br />DCRDS-DH-289 Westbound House Road, 50 feet east <br />of N Inland Drive; unpaved shoulder <br />within 5 feet of ETW. <br />Lane closure on a two-lane road with traffic <br />flagging. <br />DCRDS-DH-290 Westbound House Road, 460 feet west <br />of N Inland Drive; unpaved shoulder <br />within 5 feet of ETW. <br />Lane closure on a two-lane road with traffic <br />flagging.