2.1.1 Narrative
July 1st through July 3rd
On Monday July 1st, the ERRs crew continued contaminated soil excavation at 1733 Mitchell. Heavy rains the following day cancelled operations and the crew was permitted to demobe for the holiday weekend.
July 8th through July 13th 2013
On
Monday July 8th 2013, the ERRS crew
July 15th through July 19th 2013
On
Monday July 15th 2013, the ERRs crew continued removing contaminated
soil from the back yard of 1732 Mitchell and completed soil removal in the back
yard of 1730 Mitchell. The majority of the 1730 Mitchell was a shallow removal
because of a high concentration of trees and corresponding root systems. The
fence surrounding the back yard of 1730 Mitchell had to be removed because it obstructed
soil removal. Once contaminated soil was removed, the areas were backfilled
with clay and a layer of topsoil. The areas were thoroughly compacted and and a
straw layer was placed for erosion control.
On
Tuesday July 16th, the ERRs crew began removal in the back yard of 1726 Mitchell. Earlier in the day, START contractors double
checked assessment findings in the front yard with XRF and no areas exceeding
400 ppm were observed. However the north and south side yards of the home did
have elevated lead levels. The south side yard of this property only received a
shallow removal due to several old, large trees along the property line. The north side yard between 1726 and 1724 Mitchell
along with the remaining back yard of 1726 Mitchell were excavated down to a depth
of one foot. Once contaminated soil removal was completed the areas were
backfilled with clay, topsoil and covered with straw.
On
Wednesday July 17th, the crew placed sod at 1731, 1732, 1733 and the west half
of 1730 Mitchell. The crew also dug several holes in the back yard of 1728 MA.
START also further assessed the back yard of 1728 Mitchell and no exceedances
for lead were observed. Once this task was completed, the ERRs crew began
debris, overgrowth and obstruction removal from the back yard of 1724 Mitchell.
Region 4 ERRB’s Monty Bates was also on site to conduct a field audit of ERRs
costs to date.
On
Thursday, July 18th, the ERRs crew completed contaminated soil removal to a
depth of one foot in the back yard of 1724 Mitchell. Once contaminated soil was
removed, the area was backfilled with clay, covered with a topsoil layer and
straw was placed for erosion control. In addition Region 4 ERRB’s Jim McGuire
was on site to review site removal progress and to meet with TDEC’s Troy Keith
to review future assessment areas.
On Wednesday July 17th, EPA ERRB finance officer, Monty Bates arrived on site to conduct a field audit of all expenditures to date. The following day he was joined by section chief Jim McGuire who was given an update on site activities. McGuire also met with TDEC's Troy Keith and the OSC to review potential future assessment activities.
START contractors continue to assist with technical support, daily operations, post-excavation confirmation sampling using X-ray fluorescence spectroscopy (Xrf) and air sampling during excavation and staging of contaminated soils.
The OSC continues to coordinate clean up efforts and assessments with Tenn Dept of Environmental Conservation (TDEC) and Tenn Dept of Health as well as Hamilton County health officials. TDEC and the OSC plan to update Chattanooga City Council during February 2013. A specific date has not been set by City Council.
The OSC, Tenn Dept of Health and Tenn Dept of Environmental Conservation (TDEC) are currently preparing an assessment strategy for Chattanooga City Council addressing future lead assessments in the downtown area.
2.1.2 Response Actions to Date
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
2.1.4 Progress Metrics
Waste Stream |
Medium |
Quantity |
Manifest # |
Treatment |
Disposal |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|