1. Introduction
|
|
1.1 Background
|
|
|
Site Number: |
10LW |
|
Contract Number: |
|
D.O. Number: |
|
|
Action Memo Date: |
8/5/2013 |
Response Authority: |
CERCLA |
|
Response Type: |
Time-Critical |
Response Lead: |
EPA |
|
Incident Category: |
Removal Action |
NPL Status: |
Non NPL |
|
Operable Unit: |
|
Mobilization Date: |
8/12/2013 |
|
Start Date: |
8/12/2013 |
Demob Date: |
8/16/2013 |
|
Completion Date: |
8/16/2013 |
CERCLIS ID: |
WAN001003091 |
|
RCRIS ID: |
|
ERNS No.: |
|
|
State Notification: |
|
FPN#: |
|
|
Reimbursable Account #: |
|
1.1.1 Incident Category
1.1.2 Site Description
The site is a private residence amongst agriculture lands located within the boundaries of the Yakama Reservation. Concrete and demolition debris from a local high school was deposited on site as fill material. Because the demolition debris came from a high school where an asbestos abatement project had occurred, there was concern that there could be some asbestos containing material (ACM) commingled with the debris.
1.1.2.1 Location
The location of the site is 3690 Ashue Road, Wapato, WA.
1.1.2.2 Description of Threat
There is potential that ACM could be commingled with the demolition debris. If ACM is present, it could become friable due to weathering. Friable asbestos poses a human health hazard.
1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results
ACM was not observed during the initial site reconnaissance nor during the sampling activities. Bulk, air, and microvac (surface dust collection) samples were collected and sent to an offsite laboratory for asbestos analysis. The analysis of the microvac samples contained 1 to 9 asbestos fibers per sample. The analysis of the bulk and air samples were non-detect for asbestos.
|
2. Current Activities
|
|
2.1 Operations Section
|
|
|
2.1.1 Narrative
This removal action is focusing on the western half of the landfill where the large concrete blocks are most visible at the surface and subsurface (when viewed from the sides). The property owner confirmed that the western side of the landfill is where the majority of school demolition debis was dumped in 2012. Field observations appear to corroborate this general conclusion. There is almost no large concrete blocks on the eastern portion of the landfill surface and the eastern portion has scrub grass regrowth whereas the western portion is unvegetated and has an abundance of large concrete blocks.
The removal area was divided into quadrants. In each quadrant, ERRS will excavate and remove approximately two truckloads of large concrete blocks and will excavate exploratory trenches to document the contents of the debris pile and search for asbestos and/or other hazardous substances. START will collect air samples from the perimeter of the site and adjacent to each daily work area. START also will document the exploratory trenches and collect any suspected ACM or hazardous material encountered.
2.1.2 Response Actions to Date
Thursday, August 15, 2013:
- Excavation and removal activities were conducted in the Northeast and Southeast Quadrants.
- Three trucks were loaded with concrete blocks removed from the Northwest and Southwest Quadrants.
- Three exploratory trenches were excavated.
- START observed demolition debris (concrete chunks, rocks, and rebar) in the western portions of the NE and SE Quadrants. This material was similar to that found in the Northwest and Southwest Quadrants. This debris was consistent with an industrial demolition project, meaning household materials were generally not found intermingled with the demolition debris.
- As excavation moved to the East, household and agricultural wastes were found almost exclusively. Household materials included toys, bicycles, roofing materials, lawn mower, tires, etc. Agricultural materials included stumps, dimensional lumber, barbed wire, etc.
- Hazardous substances (oily liquids, products) were not found; however, indications of hazardous substances (ex. car batteries, empty containers, crushed fuel tanks) were observed.
- START collected 8 bulk sample for potential analysis for asbestos.
- The debris pile thickness ranges from 6-8+ feet thick near the centerline of the pile and thins towards the edges.
- Groundwater was encountered at approximately 6-8 feet below the surface of the debris pile.
- START collected 8 air samples to analyze for asbestos.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
An investigation to identify potentially responsible parties (PRPs) is underway.
2.1.4 Progress Metrics
Waste Stream |
Medium |
Quantity |
Manifest # |
Treatment |
Disposal |
Non-hazardous, non-regulated solid waste <1% asbestos |
Concrete debris |
75 tons |
001-003 |
Containment |
Landfill |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.2 Planning Section
|
|
|
2.2.1 Anticipated Activities
2.2.1.1 Planned Response Activities
2.2.1.2 Next Steps
EPA and some of the PRPs have reached an agreement in which those PRPs will conduct the removal of the school demolition debris under oversight by EPA. Therefore, EPA has concluded fund-lead removal work and will demobilize on Friday, August 16.
2.2.2 Issues
|
|
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
Yakama Nation Solid Waste
Yakama Nation Water Code Administration
Yakama Nation Environmantal Management Program
Yakima County Public Services
|
4. Personnel On Site
|
|
EPA 1
ERRS 4
START` 3
Yakama Nation 2
Yakima County 0
PRP representatives 2 (Argus Pacific; Fulcrum Environmental Services)
|
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.
|