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Washington State Mercury Pollution Reduction Initiative

This initiative aims to eliminate human-caused mercury use and release in Washington State. It includes steps to minimize mercury exposure through quantifying flows and reporting data. Analytical method 1631E is required for analysis to meet water quality benchmarks. High-priority dischargers must submit wet and dry weather analyses over the next year. Municipalities and industries are mandated to monitor mercury discharge levels. Further reduction strategies will be implemented based on future sampling rounds.

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Washington State Mercury Pollution Reduction Initiative

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  1. MERCURY REQUEST FOR EFFLUENT DATA

  2. MERCURY - BACKGROUND STATEWIDE CAMPAIGN TO ELIMINATE THE USE AND RELEASE OF HUMAN-CAUSED MERCURY IN WASHINGTON STATE AND TAKE STEPS TO FURTHER MINIMIZE HUMAN EXPOSURE TO MERCURY. (WASHINGTON STATE MERCURY CHEMICAL ACTION PLAN, DEPT’S OF ECOLOGY AND HEALTH, JAN 2003)

  3. MERCURY - BACKGROUND DOCUMENT THE AGENCY’S PERFORMANCE IN MEETING GOALS OF THE MERCURY CHEMICAL ACTION PLAN (http://www.governor.wa.gov/gmap/)

  4. PROBLEM • DETECTION LEVEL OF OLD ANALYTICAL METHOD (245.7) IS 0.2 PPB. (HIGH % OF ND REPORTED) • WATER QUALITY BENCHMARKS (CRITERIA) ARE 2.10 AND 0.012 PPB FRESHWATER AND 1.8 AND 0.025 MARINE • DATA NOT EASILY ACCESSABLE

  5. NEW MERCURY METHOD • EPA METHOD 1631E • LOWER DETECTION LEVEL 0.0002 PPB OR 0.2 NG/L • ANALYTICAL COSTS 2X ($100 VS $45)

  6. DECISIONS • REQUIRE HIGH PRIORITY DISCHARGERS AND THOSE ALREADY SAMPLING FOR MERCURY (NPDES INDIVIDUAL) TO SUBMIT 2 ANALYSIS (WET AND DRY WEATHER) OVER THE COMING YEAR

  7. DECISIONS • REQUIRE THOSE DISCHARGERS TO USE METHOD 1631E FOR ANALYSIS AND RECOMMEND CLEAN SAMPLING METHODS • QUANTIFY FLOWS • REPORT DATA SEPERATELY

  8. WHO IS SAMPLING • ALL MUNICIPALITIES OVER 1 MGD DESIGN FLOW • ALL MAJOR AND PRIMARY INDUSTRY DISCHARGERS • OTHER NPDES INDIVIDUAL DISCHARGERS WHICH THE PERMITTING SECTI0NS HAVE REQUIRED TO MONITOR FOR MERCURY

  9. AUTHORITY • CWA SECTION 308(a)(4)(A)(v) • INFORMATION REQUESTED BY LETTER ON 8/11. • SECOND LETTER OF CLARIFICATION OR INDIVIDUAL CONTACT ON 9/1.

  10. FOLLOW-UP • MUNICIPALS AND SMALL INDUSTRIES WITH HIGH CONCENTRATIONS – REFER TO HW PROGRAM TREE SECTION FOR ASSISTANCE • LARGE INDUSTRIALS – POLLUTION PREVENTION REQUIREMENT • SECOND ROUND OF SAMPLING IN ? YEARS – QUANTIFY REDUCTION

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