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Southside Chattanooga Lead

All POL/SITREP's for this site Southside Chattanooga Lead
Chattanooga, TN - EPA Region IV
POLREP #24
Residential Removal Actions Continue
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U.S. ENVIRONMENTAL PROTECTION AGENCY
POLLUTION/SITUATION REPORT
Southside Chattanooga Lead - Removal Polrep

EPA Emergency Response

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region IV

Subject: POLREP #24
Residential Removal Actions Continue
Southside Chattanooga Lead

Chattanooga, TN
Latitude: 35.0333793 Longitude: -85.3057271


To:
From: Perry Gaughan, On Scene Coordinator
Date: 10/10/2013
Reporting Period: Sept 16th through Sept 28th, 2013

1. Introduction
  1.1 Background
   
Site Number: B4J4    Contract Number:  
D.O. Number:      Action Memo Date: 8/19/2012
Response Authority: CERCLA    Response Type: Time-Critical
Response Lead: EPA    Incident Category: Removal Action
NPL Status: Non NPL    Operable Unit:
Mobilization Date: 9/17/2012    Start Date: 9/24/2012
Demob Date:      Completion Date:  
CERCLIS ID:    RCRIS ID:
ERNS No.:    State Notification:
FPN#:    Reimbursable Account #:

1.1.1 Incident Category

Lead contaminated soil on 80 properties being removed as a time critical removal under CERCLA.

1.1.2 Site Description

The Tennessee Department of Environmental Conservation (TDEC) requested the EPA Region 4 Emergency Response and Removal Branch’s (ERRB’s) assistance after discovering that the lawns of one residence and potentially several more were contaminated with lead along Read Avenue near downtown Chattanooga.  Initially, one resident along Read Avenue presented to the emergency room with severe fatigue and abdominal pain. Emergency room blood work indicated lead levels approaching 20 micrograms per deciliter (ug/dl) which alerted TDEC to conduct follow up assessments. TDEC requested assistance from ERRB to characterize the soil around the home and an initial assessment was conducted with SESD (Science and Ecosystem Support Division) Athens in which three homes were assessed as well as a public park and playground area at 1700 Mitchell Avenue. Ten samples were collected and two samples showed elevated lead levels exceeding 400 ppm.

1.1.2.1 Location

The Southside Chattanooga Lead Site is located along Read, Mitchell and Carr Avenues south of Main Street in Chattanooga, Hamilton County, Tennessee (Latitude: 35.0456, Longitude: -85.3097). The area is a blend of young, middle income couples who are renovating older constructed homes and low to middle income retired couples who have resided in the area for 20 plus years. The vast majority of homes were built in the early 1900’s.

The Southside Chattanooga area is immediately adjacent to downtown Chattanooga and was prone to flooding during the early 1900’s and prior to the development of damming and flood control measures by the Tennessee Valley Authority (TVA). Several of the homes along Read and Mitchell Avenues appear to have been built on 4-5 feet of clay fill.

1.1.2.2 Description of Threat

1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results

In response to a request from TDEC, the EPA Region 4 ERRB with assistance from SESD Athens, conducted two follow up assessments of the Read and Mitchell Avenue area in January and April 2012.  Of the 81 homes (162 front and back yards) assessed near downtown Chattanooga, 68 lawns (42 %) have lead levels exceeding 400 ppm. Lead levels range from 400 – 4000 ppm. The 4000 ppm sample was collected from a lawn along the 1600 block of Read Ave and the sample contained very dark fine material, most likely a high concentration of bag-house dust.

In addition, the Battle Academy Elementary School which neighbors the site was sampled in mid June 2012. A 20’ by 20’ grid was laid over the school property and 140 grids were screened using X-ray fluorescence spectroscopy (XRF). No significant lead contamination was found and all lead levels were below 55 ppm.




2. Current Activities
  2.1 Operations Section
    2.1.1 Narrative

Sept 16th through Sept 20th

On Monday, Sept 16th, the ERRs crew conducted removal efforts at the back yard of 1604 MA, hand dug an area in the front yard of 1600 MA, conducted removal in the back yard of 1600 MA, and at the right side (facing front) of 1522 MA.

 

On Tuesday, Sept 17th, the crew placed crush-n-run in the alley way behind 1604 MA, and continued removal efforts in the back yard of 1600 MA and side yard of 1522 MA. 

 

9/18/13, START conducted screening in the back yard of 1703 MA.  The crew dug down much further than when this back yard was initially screened.  START observed several locations with exceedances for lead, and some instances exceedances for arsenic.  START, ERRS PM and the OSC discussed options with the resident regarding future removal efforts in his yard.  The crew removed a small section of fence at 1604 MA. The crew then continued removal efforts at the 1600 MA back yard at 1522 MA side yard (all the way to the back alley/rock parking area).

 

9/19/13, the crew placed sod at 1602, 1606, and 1608 MA.  Once this task was completed, START screened several locations between 1518 and 1514 MA to determine if removal needed to take place.  Clay was observed in this area, likely due to 1518 MA being newer construction, however toward the very back of the property before the alley way, exceedances for lead in soil were observed.  The crew began a grass scrape near the residential structure and then dug down to depth where the contaminated soil was located.  A small area in the front yard of 1518 MA was also hand dug, as this location was between the dilapidated rock wall and an old, large tree.  The excavator was utilized in the front (on the street) to scrape grass and loosen soil for the crew to shovel out into the skidsteer bucket. After removal areas were addressed, the crew began backfill efforts.

 

On 9/20/13, the crew placed sod at 1606, 1604, 1602, 1600, and 1518 MA. They also reconstructed a section of fence at 1600 MA that was disassembled during removal efforts. During removal, the concrete driveway in the back yard of 1602 MA was cracked due to excessive weight and a pre-existing void.  The crew rented a large saw and cut the concrete driveway where the cracks were located. The water truck was utilized during the cutting efforts to control dust.  Once broken pieces of concrete were removed, the crew added expansion joints and used 2 x 4s to square off the edges of the driveway before cement was poured.  The cement truck arrived at 1445 hours. The crew raked out wet cement mix into the area and later smoothed the cement.

Sept 23rd through Sept 28th 2013

On Sept 23rd, the ERRs crew placed a small load of crush-n-run at the back alley way behind 1602 MA. Once rock was placed, the crew moved efforts to the back yard of 1703 Mitchell. This back yard removal had been delayed at the request of the owner so that he could harvest his garden.  The crew began work by removing sections of fence around the back yard.  Once removed, the crew uprooted several fruit and vegetable plants the owner wished to save.  Contaminated soil was removed from under the tall deck and back yard area. START also rescreened the back yard of 1701 MA in an effort to delineate areas that needed to be addressed.  START observed several locations of contamination. 

On Sept 24th, the property owner at 1703 Mitchell owner provided a sketch of locations and dimensions of garden beds for the back yard.  The crew measured off and drew lines for the garden beds and filled these areas with compost material. The remaining areas were then backfilled with clay and top soil.  The soil was graded, tamped and covered with a layer of straw due to incoming rainfall. 

On Sept 25th removal operations were cancelled because of rain.  

 

On 9/27/13, the crew removed sections of fence at the back yard of 1701 MA in an effort to obtain access.  The crew then began removal efforts at the back yard and the back area adjacent to the alley way behind 1703 MA. Backfill of clay began at 1515.

 

9/28/13, the crew continued backfill efforts. Once clay was placed, it was covered with a layer of topsoil and then tamped.  Also on this day, the crew added more compost to the 1703 MA back yard garden beds at the request of the owner.  The crew also re-planted some vegetable and fruiting plants.

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
           
           
           


  2.2 Planning Section
    No information available at this time.

  2.3 Logistics Section
    No information available at this time.

  2.4 Finance Section
    No information available at this time.

  2.5 Other Command Staff
    No information available at this time.

3. Participating Entities
  3.1 Unified Command

3.2 Cooperating Agencies

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.



4. Personnel On Site
  No information available at this time.

5. Definition of Terms
  No information available at this time.

6. Additional sources of information
  No information available at this time.

7. Situational Reference Materials
  No information available at this time.