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Marine Inventory Updates

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Marine categories include ocean-going vessels (OGV), commercial harborcraft (CHC) ... upon OFFROAD, but adjusted for marine cycle. 15. CHC Forecasting. Control ... – PowerPoint PPT presentation

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Title: Marine Inventory Updates


1
Marine Inventory Updates
  • Marine categories include ocean-going vessels
    (OGV), commercial harborcraft (CHC), and other
  • OGV and CHC have been significantly improved
  • Comprehensive statewide approaches
  • Replacing district categories
  • Designed for detailed analysis regulatory
    support
  • Very high spatial resolution
  • Based on new surveys and data collection
  • Bottom-up approach

2
Ocean-Going Vessels Update
  • Lead Staff Andrew Alexis

3
OGV Overview
  • Statewide, spatially refined, bottom-up approach
  • Operating modes
  • In-Transit, maneuvering, hotelling
  • Three emissions source types
  • Propulsion engines, auxiliary engines, boilers
  • Emissions out to 100 miles from shore
  • Eight vessel types
  • Container, Bulk, General Cargo, Refrigerated,
    Roll-on / Roll-off, Automobile Carrier, Tanker,
    Passenger

4
Outer Continental Shelf
5
OGV Population and Activity Sources
  • Port calls by vessel name/type
  • 2004 State Lands Commission port call database
  • Shipping Lanes
  • Army Corps of Engineers
  • Load factors, power, hotelling times
  • 2001 Port of Los Angeles baseline inventory
  • 2005 Statewide ocean-going vessel survey
  • Port-specific data from ports air districts

6
OGV Emission Factors
  • Emission factors (assigned by fuel, mode, engine
    type)
  • ENTEC EU Report
  • Data analysis conducted by Starcrest and ENVIRON
  • ARB analysis of multiple data sources
  • Consistent with Port of Los Angeles Baseline
    Inventory
  • Auxiliary engine heavy fuel Oil PM emission
    factor
  • Port of LA used 0.8 g/kw-hr
  • ARB uses 1.5 g/kw-hr
  • Based upon reanalysis of USEPA data upon which
    the emission factor was derived

7
OGV Forecasting
  • Controls
  • International Maritime Organization emission
    standards
  • South Coast vessel speed reduction
  • Growth
  • Estimates based upon the growth in installed
    power
  • Vessel-specific linkage to Lloyds database
  • Extrapolated from 1997-2003
  • Consistent with No Net Increase Report in South
    Coast
  • Factor of 2-3 growth by 2020 in large ports.

8
Statewide OGV NOx Emissions
9
Statewide OGV PM10 Emissions
10
OGV Emissions N. California
  • About 41 of statewide OGV emissions
  • Container vessels are 64 of OGV emissions
  • 62 of emissions in 24nm-100nm zone

11
Commercial Harborcraft Update
  • Lead Staff Kirk Rosenkranz

12
CHC Overview
  • Statewide, spatially refined, bottom-up approach
  • Nine vessel types
  • Commercial Fishing, Charter Fishing, Ferries /
    Excursion, Crew and Supply, Pilot, Tug, Tow,
    Work, Other
  • Two emissions source types
  • Propulsion engines, auxiliary engines
  • Emissions out to 100 miles from shore
  • Base year estimates
  • Forecasted for attrition/deterioration, growth,
    control

13
CHC Emissions Calculations
  • Calculation method (Base Year2004)
  • E ? Pi x ei x Eei
  • P population by vessel type
  • e average number of engines by vessel type
  • Ee emissions per engine
  • Average number of engines by vessel type derived
    from ARB surveys and the Port of Los Angeles 2001
    Inventory

14
CHC Inventory Data Sources
  • Population Estimates
  • U.S. Coast Guard documentation
  • CA. Department of Fish and Game commercial boat
    registrations
  • Port of Los Angeles inventory
  • ARB surveys
  • Average number of engines
  • ARB surveys
  • Port of Los Angeles inventory
  • Average emissions per engine
  • ARB surveys
  • Emission factors
  • Based upon OFFROAD, but adjusted for marine cycle

15
CHC Forecasting
  • Control
  • Engine standards
  • Fuel correction factors
  • Growth
  • Tugboats assumed flat
  • Other vessel types used district growth rates

16
Statewide CHC NOx Emissions
17
Statewide CHC PM10 Emissions
18
CHC Emissions - Bay Area
  • About 33 of Statewide CHC Emissions
  • 42 Ferry/Excursion, 24 Tugboats, 15 Fishing

19
CHC Emissions N. California
  • About 43 of Statewide CHC Emissions
  • 40 Ferry/Excursion, 21 Tugboats, 21 Fishing

20
Contact Information
  • Andy Alexis
  • (916) 323-1085
  • aalexis_at_arb.ca.gov
  • Chengfeng Wang
  • (916) 322-1719
  • cwang_at_arb.ca.gov
  • Todd Sax (Manager)
  • (916) 322-5474
  • tsax_at_arb.ca.gov
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