Presented to: City of Petaluma City Council

Transcription

1 Agenda Item #1.A REVISED Presented to: City of Petaluma City Council Presented By: Dan St. John, F.ASCE, Director Jason Beatty, P.E., Senior Engineer James 'Jody' Boyette, USACE Project Manager November 13, 2017

2 Acknowledgements Congressman Huffman Supervisor Rabbit Regional Partners Existing Conditions Progress Petaluma River San Pablo Bay Region Two Prong Strategy USACE Process Regional Skin in the Game Opportunities USACE P3/P4 Partnerships Beneficial Use of Dredge Material Meets Goals of SLR Resiliency and Bay Restoration Projects San Francisco Bay Restoration Commission Funding BCDC Rules Review Citizen & Business Support Local Flood District Support Next Steps

3 Fourteen mile Upper Channel portion with Turning Basin from Petaluma City southward toward the Hwy 37 Bridge Five mile Across the Flats (ATF) portion from Hwy 37 bridge to deeper water within San Pablo Bay (City responsibility) 3

4 First federal authorization Rivers and Harbors Act Four year dredging maintenance schedule for Upper Portion (hydraulic) and three year cycle for Across the Flats portion (clamshell and hydraulic dredging) Authorized upper channel depth varies from 4 to 8 feet and width varies from 50 feet to 100 feet The Turning Basin is located upstream of the Upper Portion and is 300 feet by 400 feet and 8 feet deep The Across the Flats portion is approximately 5 miles long and 200 feet wide, with an 8 foot depth

5 Last Full Dredge: 2003 Commercial Tonnage Down avg 423k short tons Yachting Events Down PYC Cancels Memorial Day Regatta WATERWAY Carquinez Strait 24,397 21,923 20,597 23,478 25,813 Middle River Mokelumme River Old River Sacramento Deepwater Ship Channel Sacramento River San Francisco Bay Entrance 67,309 62,960 62,658 65,075 67,971 San Joaquin River 3,783 3,346 3,438 5,458 5,833 San Pablo Bay 26,490 23,491 22,269 25,705 28,497 Total Waterways in California 123, , , , ,22 1 Petaluma River Cargo (in 1,000 short tons) by California Waterway Fiscal Impact on the Downtown and City Marina Siltation Increases Potential for Flooding

6 Petaluma River Dredge Material Management Plan Development 2015 Final EA & EIR for Maintenance Dredging of the Federal Navigation Channels in San Francisco Bay for FY s Army Civil Works Program FY 2017 Work Plan for O&M $600,000 for Environmental permitting & Construction Documents for Dredging USACE Update James Jody Boyette, Project manager

7 MISSION AND FUNDING Conduct cyclical maintenance dredging of the shallow-draft channels, which provides for safe navigation and unrestricted waterborne commerce distribution to the locality. FY17 Work Plan $ 600,000 Future funding KEY POINTS 1 Jun- 30 Oct Dredging window Shollenburger disposal site ready to receive upon contract award Survey is not complete so quantities are pending Channel Across Flats of San Pablo Bay (8 x 200 x 25,000 ). River Channel to Western Ave (8 x 200 x 77,000 ) including a turning basin feet wide and 8 feet deep near upstream end, and a river channel to NWPRR bridge (4 x x 1,700 ). Authorized depth between 4 and 8 feet Updated as of 8 November

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9 CURRENT STATUS 29 Sep- Shoaling analysis completed by civil design 15 Nov- USACE Project Delivery team meeting and schedule scrub 17 Nov- Conditions Survey complete 22 Nov- Shoaling Analysis report completed 30 Dec- Draft Consistency Determination complete Feb 18- Sediment testing contract procurement 9

10 North Bay Small Channels Napa River Dredged 2016 San Rafael Channel Partially Dredged 2012 Bodega Bay Dredged 2017 Creation of San Francisco Bay Restoration Authority (SFBRA) and Measure AA $25Million/yr for next 20years For Beneficial Re-use of Dredging Material Beneficial Re-use sites Cullinan Ranch Successfully Takes Dredge Material from Richmond Harbor Bel Marin Keys Project Continues to Beneficially Use Dredge Material Future site at Skaggs Island

11 Beneficial Re-use

12 Challenge Getting dredge material from barges to wetland sites Offloader Pumps, piping and barge system 12

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14 Traditional USACE Maintenance Approach Low Priority Due to Low Commercial Tonnage Costs High Due to Environmental Goals No Change in Federal Funding Levels for Dredging on Horizon Last Successful in 2002 Regional/Federal Partnership Region Puts Skin in the Game Partnership Saves Federal Money, Favorable ROI Requires Regional Governance, Funding, & Management

15 USACE Encouraged Submittal Now on Hold Due to Current Executive Order 5-Party Coalition: City, SCWA, Marin County, San Rafael, Napa Flood Control District Achieves 5-year dredging cycle Requires regional coalition and regional dredging revenue; and long-term service contract with offloading contractor Requires Local Funding and Financial Commitments Premise: Coalition controls offloading operations to beneficial use site saving USACE money by assuring better bid prices. Saving used by USACE to routinely dredge three shallow channels of the San Pablo Bay Regional costs estimated at 0-67% of cost of doing it alone based on economic evaluation

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17 Contract Wetland Restoration Site manager Provide guaranteed capacity Set Tipping fee Coalition of Agencies for Dredging the Shallow Draft Channels of San Pablo Bay Lead agreement formation Provide 0-50% of upfront offloader equipment costs Manage contract U.S. Army Corps Commit to 5-year interval to dredge shallow draft channels of San Pablo Bay Agree to use site and off-loading contractor 17

18 Traditional USACE Maintenance Approach Regional/Federal P3/4 Partnership USACE to Continue Engineering Process City to Ensure Shollenberger ready to receive sediment Identify beneficial re-use receiving site Get agreement in place USACE P3 involvement on-hold until Agency policy in place Coalition actions Solidify Coalition Partnership thru JPA or other suitable means Create Annual Revenue for Dredging Marina & Flood Project Dredging Hydrographic survey Sediment sampling/plan Begin Permitting Process Leverage with USACE dredging Identify Funding for Flood Control Project and Marina Measure AA Grant Application Develop details of P3 Proposal Identify Wetland Enhancement Project Partner Identify Contractor Partner for Offloading Quantify Costs & Contract Terms for Offloader Continue to work with USACE on P3/4 Proposal