Wisconsin
AIPG Sponsors
Best Geology
Project Vote
Christine Lilek - CPG
#10195
Three
companies competed in Wisconsin AIPGÕs GoFundMe ÒBest 2016 Wisconsin Geoscience
ProjectÓ scholarship fundraiser:
Project A – CBI: Geothermal Energy Project on Remediation Site,
Project B – Natural Resource Technology: Groundwater Relief System, and
Project C - Marek Landscaping LLC: Bluff Stabilization. gofundme.com/2p22yy4 The votes raised $275 for
Wisconsin AIPGÕs Student Scholarship Fund!
The final votes were
cast on October 31. While each of
the 3 projects received many votes of appreciation, the winner was Project B
– Natural Resource Technology: Groundwater Relief System!
Photo Credit: Courtesy of NRT
Restored Shoreline
along the West Twin River
Project B was located
at the Wisconsin Public Service CorporationÕs (WPSC) former manufactured gas
plant (MGP) site in Two Rivers, Wisconsin. In 2015, WPSC completed a Time
Critical Removal Action (Removal Action) at their former Two Rivers MGP site
(Site) in Two Rivers, Wisconsin to address MGP contaminated materials through
the United States Environmental Protection AgencyÕs (USEPA) Superfund
Alternative Site (SAS) program.
Located in a
residential and industrial neighborhood, the Site covers approximately 4 acres.
The Two Rivers MGP operated from 1925 to 1946 and produced waste by-products
such as coal tar. Handling of the waste resulted in contaminated soil and
groundwater at this Site. To address the source area of MGP waste,
approximately 80,000 cubic yards of coal tar-impacted soil were treated
utilizing in situ solidification/stabilization (ISS) and approximately 26,000
cubic yards (47,000 tons) of material were disposed at a licensed landfill. To
accomplish the ISS treatment a complex groundwater relief system was designed
and installed.
NRTÕs design team
evaluated how the addition of the impermeable solidified soils underground
would affect groundwater flow and potential for flooding adjacent properties.
Photo Credit: Courtesy of NRT
Computer model used
to design the groundwater relief system
Pre- and
post-groundwater conditions were modeled and indicated a groundwater relief
system would be required to prevent flooding. To address this, an innovative
design was developed in which the groundwater relief system required the main
excavation area to be backfilled with clear stone.
Groundwater relief trenches
with clean, rounded 2-inch stone were installed underground from the relief
system and around the solidified soils to direct the groundwater via gravity from
the relief system to an area on site where wetland soils remained.
Additional project
details can be found at: http://www.naturalrt.com/sites/default/files/wire-pdfs/AIPG%20Best%20Geoscience%20Proj%20Submittal.pdf
The Wisconsin AIPG
congratulates NRT on their award-winning project and looks forward to the
submittal of other geoscience projects for our 2017 ÒVote
for the Best Wisconsin Geoscience ProjectÓ scholarship fundraiser!