Mercury Manometer Investigation and Remediation: A COOPERATIVE EFFORT WITH THE NATURAL GAS INDUSTRY Bill Schramm

History of Meter Use 1920’s Development of natural gas collection and distribution systems Mercury meters(to present) Dry flow meters(from ’70s) Electronic(from 90’s)

Meter Applications Field development System development National distribution network Other industrial applications Domestic applications Meter servicing operations

Typical Mercury Meter

What are the typical configurations?

Single Run

Multiple Run

Shed

Building with Multiple Meters on a Manifold

Tower in Flood-Prone Locations

Platform in Shallow-Water Locations

Local Distribution

Compressor Stations

Records review Field verification Initial Sampling Iterative excavation Confirmation Sampling Investigation and Remediation Plan

Remediation Activities

Meter Dig

Shed Dig

Run Dig

Livestock Pasture Dig

Iterative Dig & Sample

Confirmation Samples

Final remedial report received Confirm data QA/QC Review data for compliance with RECAP in LAC 33:I.Chapter 13 Management Options: SSni=2.3ppm, MO1ni=23ppm, MO2&3=site specific levels Prepare NFA-BOD for site/sites meeting requirements Site/sites receive closure with approved NFA-ATT Site Closure

There are an estimated 25,000-30,000 locations throughout Louisiana. Since 1991 over 4900 have been investigated with DEQ oversight. Of the 4900, 2100 have been cleaned up with DEQ oversight, the remaining 2800 did not require corrective action. Currently there are approximately 400 to 500 sites in process with LDEQ. How Many?

How does DEQ want to move forward? Establish a cooperative policy to get responsible parties to voluntarily report and manage their sites Develop citizen outreach to inform and protect Establish database/GIS information to aid in integrating mercury distribution to water quality issues and source control

For more information regarding mercury manometers and remediation please contact: Bill Schramm (225)