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Aboveground Storage Tank Enhanced Vapor Recovery. February 10, 2004. Agenda. Welcome and Introductions Background Overview Rulemaking Schedule Contact Information Open Discussion . Background. AST systems have been a source of emissions in the field due to: component failures

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Presentation Transcript
slide2

Agenda

Welcome and Introductions

Background

Overview

Rulemaking Schedule

Contact Information

Open Discussion

slide3

Background

  • AST systems have been a source of emissions in the field due to:
    • component failures
    • exposure to harsh environment
    • maintenance and reliability problems
slide4

Overview

  • The basic EVR proposal includes several key components
    • Improved components through extended testing
    • Pressure management system to control fugitive emission
    • More stringent pressure decay requirement (TP-206.3)
slide5

Improving Component Reliability

New requirement includes a 180-day testing period.

Underground storage tank EVR product improvements expected to be applied to ASTs

slide6

Pressure Management Information

Proposed rulemaking includes a -0.5 pressure requirement

Phase II Hirt System currently being monitored for processor run information

slide7

Pressure Decay Procedure TP-206.3

Tightens up the allowable leakage for systems

Enables testing of tanks with a 100-gallon ullage

Updates instruments, calibration and gauges for testing

slide8

Phase I Only

  • District rules exempt tanks from Phase II based on:
    • size of tank (250 to 550 gallons is common)
    • installation date of tank
    • throughput of system
  • Phase I Certification provides
    • improved EVR components for smaller tanks
    • reduced costs to some smaller tanks
slide9

AST Tank Inventory

Inventory of 7633 represents approximately one-sixth of fuel carriers reporting information

Better tank size distribution desired - input from stakeholders welcomed

slide10

Rulemaking Schedule

Staff report is scheduled to be released on March 5, 2004

Board Hearing Date: April 25, 2004

contact
Contact

Stephanie Connelly

Monitoring and Laboratory Division

California Air Resources Board

P.O. Box 2815

Sacramento, CA 95812

(916) 445-9308

[email protected]

www.arb.ca.gov/vapor/ast/ast.htm

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