California Air Resources Board

The information on this page is provided to support the February 2015 Staff Report:  Initial Statement of Reasons for Proposed Rulemaking - Proposed Spark-Ignition Marine Watercraft Regulation.

AB 1085 Background: On October 11, 2009, AB 1085 was signed into law and became effective on January 1, 2010. The legislation was subsequently amended by SB 855, which was signed into law and became effective on October 19, 2010. The complete amended text reads: 

SECTION 1. It is the intent of the Legislature in enacting this act to ensure that the public is provided all of the information relied on by State Air Resources Board staff in proposing the adoption, amendment, or repeal of a regulation, including all information related to, but not limited to, air emissions, public health impacts, and economic impacts. Nothing in this act is intended to supersede the provisions of the California Public Records Act (Chapter 3.5 (commencing with Section 6250) of Division 7 of Title 1 of the Government Code) or the Administrative Procedure Act (Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code). 

SECTION 2. Section 39601.5 is added to the Health and Safety Code, to read: 39601.5. (a) The state board shall make available to the public all information described in paragraph (2) of subdivision (b) of Section 11346.2 of the Government Code, related to, but not limited to, air emissions, public health impacts, and economic impacts, before the comment period for any regulation proposed for adoption by the state board. (b) In meeting the requirement of subdivision (a), the state board shall not release proprietary, confidential, or otherwise legally protected business information. The state board shall release information in aggregated form, where necessary, to protect proprietary, confidential, or otherwise legally protected business information. 
 

Emissions Calculations and Analysis

For basic information on population, vehicle miles traveled, emission rates and emissions. 

Emissions Model

• SIMW Emissions Model (CY 1990 to 2019) (1.7 GB)
• SIMW Emissions Model (CY 2020 to 2050) (1.8 GB)

Population spreadsheet calculations for each watercraft type

• Jet Drive
• Personal Watercraft
• Outboard
• Inboard
• Sterndrive
• Auxiliary and Sail

Emission Analysis

• Activity analysis
• Vapor-liquid Equilibrium Estimate analysis
• Fuel Weathering Appendix

Correction Factors Correction factors for humidity

• Humidity

Emission Support Documents

Supporting material for the emission inventory for the July 2013 proposed regulation and new information and analyses used for development of new emission inventory
 

CSU Sacramento Report on RV activity survey

• Final Analysis
• CSUS Survey codebook

ARB and ATL Test data

• ARB/ATL test data

ERG Report

• ERG report on Correction Factors

Allocation

• Operation allocation

Seasonality

• Seasonality Analysis

Economic Data and Calculations

For information on cost calculations, cost methods, and cost survey data.

• SIMW Cost Calculations