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La Pata Avenue Gap Closure and Camino Del Rio Extension

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Presentation on theme: "La Pata Avenue Gap Closure and Camino Del Rio Extension"— Presentation transcript:

1 La Pata Avenue Gap Closure and Camino Del Rio Extension
American Society of Civil Engineers March 15, 2011 Harry Persaud, AICP, PMP

2 Project Location

3 Project Location

4 Project Background La Pata Avenue included on Orange County Master Plan of Arterial Highways (MPAH) since 1963 La Pata and Camino Del Rio shown on City of San Clemente General Plan since 1982 and Talega and Forster Ranch Specific Plans The existing La Pata Avenue built in the 1970s as a "dead-end" landfill access road Project initiated in Three years of coordination with City and resident groups resulted in an alignment responding to concerns of proximity, light and glare, and aesthetics.

5 Project Location

6 Project Purpose and Objectives
Implement Orange County MPAH, Circulation Elements of San Clemente and San Juan Capistrano, and Specific Plans for Talega and Forster Ranch Provide north/south access for local traffic Improve access to schools, commercial areas, and recreational amenities Improve emergency access Reduce Vehicle Miles Traveled (VMT) and greenhouse gas emissions

7 Project Purpose and Objectives (continued)
Facilitate local inter-community circulation Provide increased network capacity to support the forecast travel demand for the 2035 design year Minimize impacts to utility transmission infrastructure Minimize impacts to existing residential land uses Minimize impacts to the natural environment

8 Proposed Project Alignment

9 Proposed Project Widen La Pata Avenue from three to five lanes from Ortega Highway to the existing road terminus at the Prima Deshecha Landfill (PDL) – a distance of 9,600 feet Construct four new lanes from the existing PDL terminus to Calle Saluda – a distance of 10,100 feet Extend Camino Del Rio, as a four-lane roadway, from its existing terminus to the proposed Avenida La Pata – a distance of 1,700 feet Estimated Total Cost: $77,368,000

10 Proposed Project Lighting will be provided along Camino Del Rio, on La Pata between Calle Saluda and Camino Del Rio, and on La Pata north of the landfill entrance to the project limits. Sidewalks will extend along Camino Del Rio to La Pata and on the west side of La Pata from Calle Saluda to Camino Del Rio and from Vista Montana north to the project limits. Bike lanes will be provided along both La Pata and Camino Del Rio. San Clemente’s off-road bike path east of La Pata will be extended north to the city limits. The roadway project requires grading of 9 million cubic yards. 3 million cubic yards are required to balance the roadway. The remaining 6 million cubic yards are required to stabilize a large landslide complex. All earthmoving is balanced on site.

11 Alternatives

12 Environmental Issues Addressed
Aesthetics (Views) Air Quality (including Green House Gases) Biological Resources Cultural Resources Geology and Soils (landslides) Hydrology and Water Quality Hazards and Hazardous Materials Land Use and Planning Noise Public Services and Utilities Recreation (Multi-use Trails) Traffic and Circulation

13 Engineering Challenges and Solutions
Community Impacts Electric Transmission Facilities Prima Deshecha Landfill Geology Water Quality

14 Design Challenges & Solutions
Talega Community Workshops Horizontal & Vertical Alignment Refinements 7% Grade Design Deviation Berms to reduce visual impacts Forster Ranch Trailhead parking La Pata Trail Over-crossing Rubberized Asphalt to Reduce Noise Impacts

15 Electric Transmission Facilities Solution
Early Coordination Workshops with SDG&E and SCE 7% Grade Design Deviation Tower relocation Plan Coordinated with SDG&E Facility Access Plans Incorporated into Design

16 Prima Deshecha Landfill Solution
Design Addresses Existing Access Requirements to Zone 1 Design Addresses Future Access Requirements to Zone 4 Three Bridge Structures eliminate need for signalized intersection access Grade separations will maintain access to and between Zone 1 and Zone 4

17 Landslides in Project Area

18 Landslide C Remediation Concept
9 million c.y. removal 2 million c.y. buttress fill 3 million c.y. to balance roadway grading 4 million c.y. recompaction consistent with landfill general development plan 2 million c.y. Buttress Fill 9 million c.y. Excavation

19 Geotechnical Solutions
Identified Remediation Concepts to assure construction feasibility Remediation Plan to accommodate roadway construction and landfill operations Remediation Concept to balance earthwork on site.

20 Water Quality Solutions
Six water quality basins to provide load reductions and detain runoff Bio-retention planter boxes proposed in constrained right of way areas

21 Significant Unavoidable Impacts
Traffic: 2016 – I-5 Northbound ramps/Avenida Pico and I-5 Northbound direct on-ramp from Crown Valley Parkway 2035 Without SR-241 Scenario – I-5 Northbound ramps/Avenida Pico Improvements currently being planned and funded by M2 will reduce impacts. Air Quality: Construction Emissions – CO, ROC, NOX, PM10, and PM2.5 Contributions to regional air quality thresholds Localized Impacts – Worst Case Assumptions Noise: Increased traffic on Camino Del Rio forecast to exceed 65 dBA at 6 modeled locations Several 4-foot noise walls are recommended and will reduce significant impacts.

22 Visual Simulation Near Calle Gaulteria
Existing With Roadway

23 Visual Simulation on Forster Ranch Ridgeline Trail
Existing With Roadway

24 Aesthetics – Cross Sections

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29 Traffic - Study Area

30 2016 Daily Traffic Volume Without Project With Project 13 39 38 282
274 13 4 6 33 33 53 51 Without Project With Project

31 2035 Daily Traffic Volume Without SR-241
54 41 336 313 27 5 8 38 38 64 59 Without Project With Project

32 2035 Daily Traffic Volume With SR-241
43 41 294 291 15 5 8 28 29 51 51 Without Project With Project

33 Vehicle Miles of Travel
A Comparison of daily vehicle miles travelled (VMT) within the study area shows the following reductions as a result of the project. Scenario VMT 2016 - 30,758 2035 Without SR-241 - 71,531 2035 With SR-241 - 29,115

34 Noise – Monitored Locations

35 Proposed Noise Mitigation (Del Rio)

36 Projected Traffic Noise Levels

37 Recreation

38 EIR Process EIR Certification Draft EIR Final EIR NOP
Public & Agency Review and Comment Public & Agency Review and Comment Public & Agency Review Prepare Technical Studies EIR Certification Draft EIR Final EIR NOP County Board of Supervisors Meeting San Clemente and County Planning Commission Hearings Scoping Meeting Public Meeting

39 Community Outreach San Juan Capistrano Transportation Commission – November 10 at 6:00 p.m. Mission Viejo City Council Briefing – November 15, 2010 at 6:00 p.m. San Juan Capistrano City Council Briefing – November 16, 2010 at 6:30 p.m. San Clemente Planning Commission Briefing – November 17, 2010 at 7:00 p.m. Public meeting – November 18, 2010 at 7:30 p.m. Ladera Ranch Civic Council Briefing – November 22, 2010 at 7:00 p.m. Forster Ranch HOA meeting – December 7, 2010 at 6:00 p.m. San Clemente Planning Commission Hearing – December 8, 2010 at 7:00 p.m.

40 Project Schedule Notice of Preparation (NOP) November 10, 2009
(30 day review period) Publish Notice of Availability (NOA) and Public Circulation of DEIR November 3, 2010 (45 day review period) DEIR Comment Period Closes December 17, 2010 Prepare Final EIR March, 2011 County Planning Commission Hearing April, 2011 County Board of Supervisors Hearing FEIR Certification New RFP (NEPA) and (Design) Design ROW, Permits, Funding (Road, RMV, M2 State Federal) Construction

41 Questions?


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