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Full Extent Requiring Institutional Controls at Site 47 - i� Current Figure N ; -- DAVIS:AV_ ! / ! 777 . .� ` W , —- -- } a s a • a a • r a e ■ • • a + • F_YFF_E AV C�_ �I • .:+J733r :''r . s - Miles - - — -- MCCLQY-AV W-284 W128S /WEms dw -280 W 281 /!j JJ� /r .��-~ r / / P/NTER-AV— T W-282 ! GIL•L•ISSALi V �jp 1 ► ' o ------------------------- ---------- - r - - - - -----------------------------------------I ite 47 Monitoring Wells �``' Existing monitoring well for future sampling -New monitoring well to be installed and sampled after developmen , '� an - Y r iA Existing well to be destroyed prior to develo ment Existing Warehouse ° '% Legend Alternative 5: Expanded Excavation with Existing Drainage Channel to be modified following development Proiect Sierra Excavation Areas to be Covered with Soil On-Site Consolidation, Existing Durable Cover,Features outside Project Sierra Development Drainage Channel with Contaminated Sediment N Expanded New Durable Cover, and ICs Existing Drainage Channel to remain following development 0 Stormwater detention ponds and limited landscape areas Existing Covers to be Maintained __� Project Slerra Development Area Site 47 — Proposed Drainage Channel Detention Ponds Proposed Pavement Remedial Boundary Port of Stockton, Rough&Ready Island Project Sierra Excavation Areas to be Covered with Hardscape Surface' Proiect Sierra Consolidation Area to be Covered with Concrete' Q Proposed Soil Cover Roads Notes: Stockton California 0 Exterior concrete areas and sidewalks 0 Warehouse and outdoor storage areas IC=Instutitional Control Geosyntec° Figure Aerial Imagery Sources:Google Earth Pro,August _ New railroad spurs 'Section 4.5 describes the site grading,fill import/placement,and durable cover installation activities proposed by the Project Sierra development.These activities meet and 2018(Main Figure)and ESRI Basemap, consultants exceed the minimum requirements to address the RAOs;lesser amounts of site grading and fill impor/placement,and/or different types of hardscape finish surfaces would also May 2020(Inset) 0 Parking and driveway areas 0 250 15 address RAOs.To support a comparison with other remedial alternatives,the cost estimate for Alternative 5 elements within the Project Sierra development focuses on the site Feet W R2501 B March 2023 grading and fill import/placement required within the remedial boundary,and is not intended to incorporate all site development elements \\oakland-01\data\GIS\Port_Of_Stockton\Rough-and-Ready-Island-PM\Project\Site 47\2022-02_DraftRAP\Figl5_Alt5_ExpandedExcavation_RT.mxd 3/8/2023 5:01:06 PM(Author:RThomas)