Another recent upload to my website of work regarding monitored plume stability and monitored natural attenuation at creosote and coal tar DNAPL sites, including many Beazer sites.

1. Monitored Natural Attenuation (MNA) –
Monitored Plume Stability (MPS)
Summary
Presentation Notes
Beazer East, Inc. - Mitchell Brourman
Key Environmental, Inc. – Neale Misquitta
Other Program Contributors

2. MPS – Selected as Primary
Remedy/Implemented – It’s Been Done
Before
 MPS selected as the primary
groundwater remedy at:
 Ritari Post and Pole Site in Sebeka,
Montana
 American Creosote Works Site in
Jackson, Tennessee
 Smeltertown Site in Salida, Colorado

3. MPS - Implemented
 MPS has also been implemented at:
 Former Koppers Site in Kansas Ctiy -
Groundwater
 Champion International Site in Libby, Montana
 Former Koppers Site in Oroville, California -
Groundwater
 Former Koppers Company Inc. Facility –
Youngstown, Ohio – Groundwater and Sediments
 Koppers Superfund Site – Chareston, SC,
sediments (and groundwater?)
 Koppers Company Inc. Facility – Florence, SC –
groundwater.
 Typically linked with site institutional controls
and deed restrictions

4. Creosote Sites – Kiilerich and Arvin
 Data from 44 creosote impacted sites in
Denmark demonstraes the viability of
naturally occurring processes for reduction
of groundwater constituent concentrations
(Kiilerich and Arvin (1996).
 Moreover, dissolved reoste concentrations
are reduced below detection limits within 50
meters downgradient of the source.

5. Creosote Sites – Godsy and Goerlitz
(1986)
 Godsy and Goerlitz report that natural
attenuation of creosote compounds occurs
downgradient of creosote sites.
Concentrations of creosote compounds
decrease in groundwater with increasing
distacnce due to dispersion, sorption, and/or
biological and abiotic degradation and
because the cresosote or dissolved phase
creosote compounds in the groundwate have
reached an equilibrium with the presence of
DNAPL creosote.

6. Naphthalene - Biodegradation
 U.S. EPA (Federal Register, Vol. 67, No. 106,
June 3, 2002, p. 38238) made a preliminary
determination not to regulate naphthalene
with a National Primary Drinking Water
Regulation because it occurs infrequently in
public water supplies and when it does occur,
it is not known to occur at levels of public
health concern. EPA indicates that “usually
naphthalene is not found in water because it
evaporates or biodegrades quickly”.

7. UST Plumes
 Mace et al. (1997) Texas Bureau of Economic Geology
Geological Circular 97-1 studied 605 underground
storage tank sites and determined that, "Most benzene
plumes (75 percent) caused by leaking underground fuel
tanks are less than 250 ft long and impact an area of less
than 49,000 feet squared as defined by the 10-ppb
contour of benzene." The reason for the short plumes is
natural attenuation including biodegradation. See
attached.
 These results are consistent with the Livermore study
(Rice et al., 1995). They studied UST releases in
California and concluded that, "Plume length estimates
showed that average site plume lengths rarely exceed
about 250 ft."

8. Fuel Hydrocarbon Solute Plume
Studies (cont’d)
1997 - Texas fuel hydrocarbon plume
study
 Mace et al -- Texas Bureau of Economic
Geology
 Evaluated historical data from 605 fuel sites
Growing Unknown
3% 1%
Shrinking
34%
Stable
62%
75% of plumes < 250 feet long

9. Texas Plume Study
Plume Length
Growing Unknown
3% 1%
Shrinking
34%
Plume Mass (ave. concentration) Stable
62%
Unknown
Growing n = 219
1% Stable
14%
27%
Shrinking n = 227
58%