2.1.1 Narrative
Site Planning and Assessment Activities:
Inter-agency phone conferences have resumed. The last meeting occurred on 04/10/13
Participants:
United States Environmental Protection Agency (US EPA)
Agency for Toxic Substances and Disease Registry (ATSDR)
United States Department of Energy (US DOE)
New York State Department of Conservation (NYS DEC)
New York State Department of Health (NYS DOH)
New York City Department of Health and Mental Hygiene (NYC DOHMH)
New York City Department of Environmental Protection (NYC DEP)
Response Actions to Date:
October 23, 2012: EPA OSC meet ERRS on-site. (Mobilization date)
October 24, 2012: EPA OSCs, EPA RIAB, NYC DOHMH, KEMRON, and Weston conducted shielding pilot study at the most elevated radiation levels along Irving Avenue Sidewalk in front of Lot 42 and 44 (Primo Auto Body Bays #1/ #2 and Terra Nova). Shielding study was also conducted inside of Primo Auto #2 Bay. The team also surveyed the sidewalk along Irving Avenue and delineated elevated radiation levels. The area was marked out with pink spray paint (NYC Color Code for survey work). OSC handed written access agreement to Boro Cabinet.
October 25-26, 2012: EPA OSCs, EPA RIAB, NYC DOHMH, KEMRON, and Weston tamp down foliage on Lot 31, stack debris, and conduct gross radiation survey to identify hot spots. Crane Company (Auringer) was contacted in person to remove remaining metal plates on Lot 31. The hole in the basement of IS 384 School was sealed.
November 10, 2012: EPA OSCs, EPA RIAB, NYC DOHMH, KEMRON, and Weston performed survey and delineated elevated radiation at Primo #1, Primo #2, and Terra Nova.
December 10, 2012: Radon canisters were placed in IS-384 crawl space area and throughout Audrey Johnson Daycare. The basement area of IS-384 and portions of Audrey Johnson Daycare were surveyed using the Rad7. One Rad7 unit was left in the IS-384 crawl space (were the sealed hole is located) to capture data for a three day period.
December 13, 2012: The radon canisters were picked up from IS-384. The Rad7 that was left for two days in IS-384 had some technical problems. The instrument was set up again on 12/13/12 and left it for collection until 12/19/12.
The radon canisters were picked up from Audrey Johnson Daycare as well and all the canisters brought to the laboratory on 12/14/12. The Rad7 was used to complete the survey of the basement, offices and classrooms of Audrey Johnson Daycare. All quick survey readings using the Rad7 in both schools showed no increase above background in any of the occupied spaces. However, in one of the electrical closets in the basement of Audrey Johnson Daycare (A closet with an open window to Moffat Street) there were slight increased readings.
December 18, 2012: Radon canisters were placed in both Primo bays as well as Terra Nova. OSC Daly, Weston and NYC Health observed the workers in all three bays from 9 AM-5 PM to assist in determining the occupancy factor. The observers used the diagrams from the previous gamma delineation survey study to identify radiation level areas within the buildings. A chart was filled out with personnel, times and location specifics. This along with previous information/employee interviews will be used to determine the occupancy factor needed for the shielding calculations. OSC Daly is still working with the EPA attorney to gain access to the deli. This radon sampling will need to be performed separately.
December 19, 2012: The Rad7 was removed from IS-384 and then brought to Audrey Johnson Daycare basement closet for a three day run.
December 21, 2012: The radon canisters were picked up from both Primo bays and Terra Nova. The canisters were brought to the laboratory. The Rad7 was picked up from Audrey Johnson Daycare and then used to perform quick surveys at the Primo and Terra Nova Facilities.
December 27, 2012: The radon results for IS-384 and Audrey Johnson Daycare came back below the EPA action level of 4 pCi/l.
January 02, 2013: Bi-weekly inter-agency phone conference.
January 03, 2013: EPA OSC received the signed access agreement from the Bethel Church of God/Lot 31.
January 08, 2013: EPA OSCs met with NYC DOT to go over sidewalk shielding specifics and permit requirements.
January 09, 2013: The radon results for Primo and Terra Nova came back. There were a few readings that were slightly above the EPA action level of 4 pCi/l. Additional sampling will be performed in these areas to confirm these results.
January 10, 2013: EPA, NYC DOHMH and Weston performed the radiological survey on Lot #30 (Boro Cabinets) and Lot #31 (Old railroad spur).
January 15, 2013: The technical group had a phone conference discussing the shielding recommendation document compiled by EPA and NYC DOHMH.
January 23, 2013: David Weiss, Lot 46, faxed the signed access agreement.
January 28, 2013: OSC Daly visits Lot 46 tenants to set up radon sampling and analysis for February 4-6, 2013.
February 4, 2013: Radon canister placement at Deli Basement, Deli main floor, and Apartment # 2 (Lot 46). Canisters also placed at Primo #1 and Terra Nova for verification sampling.
February 5, 2013: Rad 7 Survey at Deli Basement, Deli main floor and Apartment #2
February 6, 2013: Deli Basement PIC survey conducted. Rad7 ran for 2 hours.
February 7, 2013: Radon canister results for Deli Basement, Deli main floor, and Apartment # 2 (Lot 46) are all below 4 pCi/l . However, there were elevated radon readings near basement hole that exhibited readings at approximately 3 pCi/l. Radon canisters results for Primo #1 and Terra Nova were below 2.5 pCi/l. The Rad7 readings showed increased Thoron near the basement hole which is consistent with previous investigation of holes/drains in the area. Further radon sampling for these areas are being planned.
February 13, 2013: Bi-weekly inter-agency phone conference.
March 21, 2013: NYC DOHMH Health Physicist submitted revised proposed shielding document with new Lead layer options.
March 25, 2013: Property surveyor and fencing subcontractors were selected. The tentative start date for the surveying of Lot 31 is April 8, 2013. Fencing subcontractor will tentatively begin installation on April 9. 2013.
April 08, 2013: OSC and ERRS Mobilizes at the Site to prepare Lot #31 for fencing and shielding operations.
April 09, 2013: Property boundary survey and fence installation begins.
April 10, 2013: Monthly inter-agency phone conference.
April 16, 2013: Concrete Shielding is installed on Lot #31 (Railroad Spur Property) on the ground along the back of Primo #2 and Terra Nova section of the building. The fencing installation continues.
April 17, 2013: Rock and clean fill was dropped off and spread in the area of the office trailer (Moffat Street Gate) to form a capped section. The capped section serves multiple purposes. First it serves as shielding of the elevated radioactive soil. The Ludlam 19 readings of the capped area ranges from 10-15 microR/Hr. The Ludlum 19 readings at the edge of the capped area are 35-40 microR/Hr. Secondly, this cap will prevent spread of contaminated soil and will be the “clean” zone. This area will be utilized as the command post for upcoming operations as well as used for parking vehicles and equipment staging. The fencing installation continues. Once the fence is complete, the uncapped area will be off limits.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
The Wolff-Alport Chemical Company is the responsible party but this company went out of business in the 1950's.
2.1.4 Progress Metrics
Waste Stream |
Medium |
Quantity |
Manifest # |
Treatment |
Disposal |
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