Agmt17 AECOM Technical Services, Inc.

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Construction Sequence and Other Requirements — This will include recommendations for construction sequence and other detailed information for incorporation into the plans, including contractor requirements. Foundation Report Input— The above findings will be incorporated into the seven Foundation Reports for the Project and submitted to Caltrans for review. Resolve Caltrans Comments — This will include resolving Caltrans comments on the CDSM portion of the Foundation Reports for eventual approval. 4.2.5 Highway Design Plan Sheets —The following plan sheets will be developed or modified to incorporate CDSM in the 95% submittal and refined at subsequent stages up to Ready To List (RTL). Construction Details (Soil Treatment Plans) — Construction Detail CDSM Plan Sheets will be developed to indicate the treatment locations, patterns and depths. This will include a total of nine Soil Treatment Plan sheets. • Construction Details (Soil Treatment Details) — Construction Detail CDSM Detail Sheets will be developed to indicate the details of each type of treatment (patterns and depths). It is also anticipated that Construction Detail Sheets for lightweight fill will be needed for fringe or conform areas where CDSM may not be appropriate. This will include a total of three Soil Treatment Detail sheets. • Stage Construction — CDSM construction activities will be incorporated into the Stage Construction Plans. • Traffic Handlinq — CDSM construction activities will be incorporated into the Traffic Handling Plans. 4.3 Specifications and Special Provisions — Specifications for the CDSM and potential lightweight fill will be developed and incorporated into the PS&E package at the 95% submittal stage and refined at subsequent stages up to RTL. 4.6 Quantities and Cost Estimate — Quantities and Costs for the CDSM and potential lightweight fill will be developed and incorporated into the PS&E package at the 95% submittal stage and refined at subsequent stages up to RTL. 5.1 Plans, Specifications and Estimates — CDSM activities will be incorporated into the plans, specifications, and estimates at the 95% submittal stage and refined at subsequent stages up to RTL. CDSM activities will also be incorporated into the Construction Schedule. 5.4 Environmental Revalidation — CDSM will be added to the environmental revalidation documents and included in those efforts for approval by Caltrans. Cement Deep Soil Mix (CDSM) Design Deliverables: • Updated Foundation Reports • Construction Detail Plan Sheets (12 total) • Updated Stage Construction Plan Sheets • Updated Traffic Handling Plan Sheets • Updated Specifications • Updated Quantities and Cost Estimate • Updated Environmental Revalidation These will all be completed at the 95% submittal stage and subsequent stages up to RTL. ATTY/AGR/2019/AMENDMENTS/AMEND NO.2—AECOM 101/84 PS&E REV: 07-03-19 DZ Page 8 of 13