The monitoring well network includes both on-site and off-site wells. The water table is present at depths of approximately 24-28 feet below ground surface at the Site. The depth to ground water increases to the west and southwest of the Site. The shallow groundwater below the Site flows towards the west-southwest. The flow direction of the deeper groundwater in the St. Peter formation is towards the northeast.
The monitoring well network has been sampled regularly for arsenic. Elevated concentrations of arsenic have been found in the groundwater below and downgradient of the Site. The groundwater contaminant plume extends approximately 2,000 feet southwest of the Site in the terrace and glacial till deposits. The bedrock deposits do not appear to have been contaminated with arsenic from the Site.
The MDA and the Minnesota Department of Health (MDH) reviewed available well records and conducted site visits to determine the status and use of any private wells near the Site. Based on this survey, there does not appear to be any users of groundwater within the arsenic groundwater plume emanating from the Site.
The monitoring well network includes both on-site and off-site wells. The water table is present at depths of approximately 24-28 feet below ground surface at the Site. The depth to ground water increases to the west and southwest of the Site. The shallow groundwater below the Site flows towards the west-southwest. The flow direction of the deeper groundwater in the St. Peter formation is towards the northeast.
The monitoring well network has been sampled regularly for arsenic. Elevated concentrations of arsenic have been found in the groundwater below and downgradient of the Site. The groundwater contaminant plume extends approximately 2,000 feet southwest of the Site in the terrace and glacial till deposits. The bedrock deposits do not appear to have been contaminated with arsenic from the Site.
The MDA and the Minnesota Department of Health (MDH) reviewed available well records and conducted site visits to determine the status and use of any private wells near the Site. Based on this survey, there does not appear to be any users of groundwater within the arsenic groundwater plume emanating from the Site.
In 2005, the MDH established a Special Well Construction Area (SWCA) for the Site and surrounding area. The SWCA requires MDH review of all wells proposed to be installed within the SWCA. Water supply wells will not be approved for completion in the unconsolidated deposits or the Platteville or St. Peter formations. Special construction and/or monitoring requirements may be imposed by the MDH for wells, in addition to other restrictions. The SWCA includes the area bounded by East 26th Street on the north, 26th Avenue on the east, Lake Street on the south, and Bloomington Avenue South on the west, within the City of Minneapolis.
In 2005, the MDH established a Special Well Construction Area (SWCA) for the Site and surrounding area. The SWCA requires MDH review of all wells proposed to be installed within the SWCA. Water supply wells will not be approved for completion in the unconsolidated deposits or the Platteville or St. Peter formations. Special construction and/or monitoring requirements may be imposed by the MDH for wells, in addition to other restrictions. The SWCA includes the area bounded by East 26th Street on the north, 26th Avenue on the east, Lake Street on the south, and Bloomington Avenue South on the west, within the City of Minneapolis.
An office/warehouse was constructed on the Site in 2005-2006 by 2800 Hiawatha LLC. Approximately 2,450 cubic yards of contaminated soil was excavated during construction of the office/warehouse and disposed of off-site.
The responsible party is currently monitoring arsenic contamination in the groundwater in the terrace, glacial till and bedrock formations beneath and adjacent to the Site.
An office/warehouse was constructed on the Site in 2005-2006 by 2800 Hiawatha LLC. Approximately 2,450 cubic yards of contaminated soil was excavated during construction of the office/warehouse and disposed of off-site.
The responsible party is currently monitoring arsenic contamination in the groundwater in the terrace, glacial till and bedrock formations beneath and adjacent to the Site.
In July 2008 an environmental covenant was placed on the Site by 2800 Hiawatha LLC (Hennepin County Document No. 9159456). The environmental covenant documents the extent of cleanup and the remaining contamination present at the Site. The environmental covenant also restricts the usage of the Site to industrial activities and requires approval from the MDA staff for certain activities.
In July 2008 an environmental covenant was placed on the Site by 2800 Hiawatha LLC (Hennepin County Document No. 9159456). The environmental covenant documents the extent of cleanup and the remaining contamination present at the Site. The environmental covenant also restricts the usage of the Site to industrial activities and requires approval from the MDA staff for certain activities.
Exponent, 2004, Response Action Plan: CMC Heartland Partners, Lite Yard Site, Minneapolis, Minnesota.
Minnesota Geological Survey, 1989, Geologic Atlas for Hennepin County, Minnesota.
Exponent, 2004, Response Action Plan: CMC Heartland Partners, Lite Yard Site, Minneapolis, Minnesota.
Minnesota Geological Survey, 1989, Geologic Atlas for Hennepin County, Minnesota.
