HomeMy WebLinkAboutCouncil Presentation 02-19-2019 CalPortland Loop AnalysisAlternatives AnalysisThe Loop at CalPortlandFebruary 19, 2019
OUTLINE•Project Context•Key Issues•Crossing Avra Valley Rd•Grade Separation from Haul Road & Conveyor•Site Security•Cost •Next Steps•Questions
PROJECT CONTEXT•Part of the Loop•Project to the NW Completed earlier this month•Only missing segment to complete 31 miles on Santa Cruz River (Sanders to Valencia)•Connects NW Marana and Continental RanchExisting pathRecently CompletedThis project
PROJECT CONTEXT•Cemex to Avra Valley Rd•Length – 1.8 mi•Previous efforts have been unsuccessful
KEY ISSUESAvra Valley Road Crossing•Reconfigure existing bridge to cross on south side of the road•Cross under Avra Valley using existing soil cement ramp•PCDOT Bridge -Approved by Pima County DOT director 07/18
KEY ISSUES•Avra Valley Road CrossingTransition from Existing Path
KEY ISSUESGrade Separation from Haul Road & Conveyor•Preferred Alternative:•Underpass at haul road•Underpass at conveyor
KEY ISSUESGrade Separation from Haul Road & Conveyor•Least utility impacts•Least acquisition from CP•Limits visibility of CP plant•Able to drain underpasses without pumps•Preferred by Cal Portland
KEY ISSUES•Site Security•Liability concerns•Indemnification requested•Marana to acquire property in fee exceptat haul road, conveyor (CP to retain ownership, Marana to purchase easement)•Minimize visibility of plant •Initial request – wall for 1.2 mile frontage•Agreement – 1 mile fence, 0.2 mile wall•Access to conveyor and path closures when needed for maintenance
KEY ISSUES•Site Security•8-ft fence with slats and razor wire•8-ft wall with razor wireFenceWall
KEY ISSUES•Site Security•8-ft fence with slats and razor wire•8-ft wall with razor wireFenceWall
KEY ISSUES•Construction Cost•Fencing and Walls ~$500,000•Underpasses, Path, Avra Valley Bridge ~$1,200,000•Contingency ~$300,000•Construction Cost ~$2,000,000•Design•Land acquisition
NEXT STEPS / QUESTIONS
KEY ISSUES•Grade Separation from Haul Road & Conveyor•Alternative A•Bridge over haul road•Bridge over conveyor
KEY ISSUES•Grade Separation from Haul Road & Conveyor•Alternative B•Bridge over haul road•Underpass at conveyor
KEY ISSUESGrade Separation from Haul Road & ConveyorAlternativeABridge/ BridgeBBridge/ UnderpassCUnderpass/ UnderpassUtility ImpactsHigh High LowAcquisition from CP~4.5 Ac ~4.6 Ac ~3.4 AcDrainageGravity Gravity GravityVisibility of CP PlantHigh Medium LowCP PreferencePreferred