Pennsylvania Department of Environmental Protection Rachel … · 2020-02-17 · Pennsylvania...

Pennsylvania Department of Environmental ProtectionRachel Carson State Office Building

P.O. Box 8469Harrisburg, PA 17105-8469

June 4, 2007

Bureau of Radiation Protection 717-787-2480

Mr. Mitch Cron(3HS21)Remedial Project ManagerU.S. Environmental Protection Agency1650 Arch Street SDMSDoc'D

Philadelphia PA 19103-2029

Dear Mitch,

At your request the Pennsylvania Department of Environmental Protection, Bureau of RadiationProtection (BRP) performed dose projections to estimate the potential radiation dose to the public in thecase of a hypothetical fire at the Safety Light Corporation (SLC) Superfund Site in Bloomsburg, PA.

For these projections BRP utilized the RASCAL Source Term to Dose computer model,version 3.0.4. This model was developed for the US Nuclear Regulatory Commission and is used toestimate potential doses to the public resulting from airborne releases of radioactive material from majornuclear facilities in the US. The SLC site in Bloomsburg, PA is one of the facilities included in themodel.

BRP performed projections for three cases.• Each case assumed a fire that destroys the Etching Building in one hour. The Etching Building

was chosen because:> It has a long history of processing radionuclides,> It is known to be highly contaminated with radionuclides,> It is only partially sprinklered and> It is the largest of the buildings designated for demolition and disposal under the EPA

Engineering Evaluation/Cost Analysis (EE/CA).• Each case assumed a different source term. The source terms were based on typical quantities of

radionuclides handled or stored in the Etching Building by U.S. Radium and/or SLC.• Each case used the predefined meteorological conditions established in the model, i.e., wind

from the west at 4 mph, neutral atmospheric stability (Pasquill class D), and no precipitation.

The results of each case provide the total projected dose (and its components) to personsdownwind within 48 hours after the start of the fire. Total Effective Dose Equivalent (Total EDE orTEDE) is the sum of the doses from external and internal exposures and, in these cases, accounts forinhalation exposure and direct exposure resulting from radionuclides released to the atmosphere by thefire. It does not account for potential doses resulting from radionuclides deposited in soil (e.g., in avegetable garden) and subsequently taken up by food crops.

As expected, the highest projected doses are at the location closest to the release point.RASCAL projects doses as close as 0.1 miles downwind and this distance is comparable to the

An Equal Opportunity Employer . WWW.dep.State.pa.US Printed on Recycled PaperAR101312

Mr. Mitch Cron (3HS21) - 2 - June 4, 2007

downwind distance from the Etching Building to the nearest residence for the assumed wind direction.It should be noted that for an easterly wind direction the nearest residence would be withinapproximately 0.02 miles. RASCAL does not calculate doses at such short distances.

All three cases resulted in projected doses that were less than the EPA PAG (protective actionguideline) of 1 REM TEDE. Cases "SLC_Fire_Mixed_Default_Met" and"SLC_Fire_H3_lE5Ci_Default_Met" resulted in projected Total EDE of 1.5E-01 REM and 1.2E-01REM (respectively) at 0.1 miles. These values exceed the NRC annual TEDE limit of 0.1 REM forindividual members of the public stated in 10 CFR 20.1301.

As noted above, the projected Total EDE values of 1.5E-01 REM and 1.2E-01 REM (whichexceed the NRC annual TEDE limit) occur within the first 48 hours after the fire begins, and do notaccount for potential doses resulting from radionuclides deposited in soil (e.g., in a vegetable garden)and subsequently taken up by food crops.

Sincerely,

Jeffrey WhiteheadRadiation Health PhysicistDecommissioning & Environmental Surveillance Division

Enclosures

cc: Robert Maiers, P.E.

AR101313

Example Dose Projection- Safety Light Corp. Superfund SiteSoftware: US NRC RASCAL v3.0.4 Source Term to Dose ModelCase Description: SLC_Fire_Mixed_Default_Met

Assumptions:Fire in Etching Building destroys entire building in approx. 1 hourSource term-100,000 Curies H3, 10 Curies Sr90, 10 Curies Cs137, 1 Curie Ra226, 1 CurieAm241 (these quantities are based on typical quantities handled by US Radium/SafetyLight Corp.).Meteorology- Rascal standard meteorology: 4 mph from 270 deg., stability D, no precip.

SLC Fire Mixed Default Met-1AR101314

Summary Report

Safety Light Docket No. 030-05982License No. 37-00030-08

Facility Address Safety Light Corp.4150-A Old Berwick RoadBloomsburg, PA 17815

County ColumbiaTime Zone EasternLatitude 41.0161°NLongitude 76.3731 °W

Three companies are located on the site property: (1) USR Metals, Inc., (2) Multimetals Products Corporation, and (3)Safety Light Corporation. Only Safety Light handles radioactive materials. The Safety Light facility consists of sevenbuildings within a six foot high fence with three entrances. Radium was previously used at the site. While some radiumcontamination remains, there is no significant quantity of radium on the site. The Susquehanna River is 200 feet south.The site is in Almedia, just E of Bloomsburg, PA. Nearby reactors include Susquehanna (10 miles ENE), Three Mile Island(60 miles S), and Limerick (65 miles SE). Harrisburg (the state capitol) is 50 miles SSW.

Printed: Thursday, May 31, 2007 11:00 by RASCAL v3.0.4 Source Term to Dose Model


Summary Report

Case description:Run date/time:

SLC_Fire_Mixed_Default_Met05/04/2007 09:18

Case Summary

Event Type

LocationName:City, county, state:Lat / Long / Elev:Time zone:Population (2000):

Other Radioactive Material Releases

Safety Light Corp.Bloomsburg, Columbia, PA41.0161 ° N, 76.3731 ° W, 500 mEastern3,435 / 25,863 / 59,389 (2 / 5 /10 mi)

Source TermType:Fire location:Inventory units:

NuclideH-3Sr-90Ra-226Cs-137Am-241

Isotopic FireEtchingCi

Inventory1.00E+051.00E+011 .OOE+001.00E+011 .OOE+00

Rel. Frac.5.00E-011 .OOE-021 .OOE-021 .OOE-021.00E-03

Inh. Frac.1 .OOE+001 .OOE+001. OOE+001. OOE+001. OOE+00

Release PathwayType:Release point:Release height:Building wake effects:

Release timingsTo atmosphere start:To atmosphere duration:

MeteorologyType:Data set name:Data set desc:

Direct to AtmosphereNot an isolated stack0. mComputed

05/04/2007 00:000 days, and 01:00

Predefined - Not site specificStandard MeteorologyWind 4 mph from 270, Stab D, No Precip

Summary of dataat release point:

00:00

CalculationsCase description:End of calculations:Distance of calculation:Close-in distances:

Dir SpeedType deg mph

Obs 270 4.0

Stability Temp RHclass Precip °F %

D None 70 50

SLC Fire Mixed Default Met05/06/2007 00:00Close-in + to 10 miles0.1 , 0.2, 0.3, 0.5, 0.7, 1 .0, 1 .5, 2.0 miles


SLC Fire Mixed Default Met-3Page 1 of 1

AR101316

Summary Report

Case description: SLC_Fire_Mixed_Default_MetRun date/time: 05/04/200709:18

Maximum Dose Values (rem) - Close-In

Dist from releasemiles 0.1 0.2 0.3 0.5 0.7 1. 1.5 2.(kilometers) (0.16) (0.32) (0.48) (0.8) (1.13) (1.61) (2.41) (3.22)

Total EDE 1.5E-01 5.2E-02 3.1E-02 1.9E-02 1.5E-02 1.2E-02 9.2E-03 7.4E-03Thyroid CDE 1.2E-01 4.3E-02 2.6E-02 1.5E-02 1.2E-02 9.8E-03 7.6E-03 6.2E-03Acute Lung 7.8E-02 2.7E-02 1.6E-02 9.8E-03 7.7E-03 6.2E-03 4.8E-03 3.9E-03Total Acute Bone 3.0E-02 1.1E-02 6.3E-03 3.8E-03 3.0E-03 2.4E-03 1.9E-03 1.5E-03Inhalation CEDE 1.5E-01 5.2E-02 3.1E-02 1.9E-02 1.5E-02 1.2E-02 9.2E-03 7.4E-03Cloud Shine « . . « , « * , « , * * * * * * * * * * * *Period G n d Shine * * * * * * * * * « * * * * « * . * * * * * *4-day Ground Shine * * * * * * * * * * * * * * * * * * * * * * * *

Notes:1. Doses exceeding PAGs are underlined.2. Early-Phase PAGs: TEDE -1 rem, Thyroid CDE - 5 rem3. *** indicates values less than 0.1 mrem

To view all values - use Detailed Results | Numeric Table4. Total EDE = CEDE Inhalation + Cloud Shine + 4-Day Ground Shine5. Total Acute Bone = Bone Inhalation + Cloud Shine + Period Ground Shine

Maximum Dose Values (rem) - To 10 miles

Dist from releasemiles 3 4 5 7 10(kilometers) (4.8) (6.4) (8.0) (11.3) (16.1)

Total EDE 4.8E-03 3.5E-03 2.7E-03 1.7E-03 1.1E-03Thyroid CDE 4.0E-03 2.9E-03 2.2E-03 1.4E-03 8.8E-04Acute Lung 2.5E-03 1.8E-03 1.4E-03 9.0E-04 5.5E-04Total Acute Bone 9.8E-04 7.1E-04 5.4E-04 3.5E-04 2.2E-04Inhalation CEDE 4.8E-03 3.5E-03 2.7E-03 1.7E-03 1.1E-03Cloud Shine « * * » * « « « * * * * * *Period Gnd Shine *** *** . *** *** ***4-day Ground Shine • * • • * . * * * • • • • • «



Case Summary

Event Type Other Radioactive Material Releases

LocationName: Safety Light Corp.

Printed: Thursday, May 31, 2007 10:56 by RASCAL v3.0.4 Source Term to Dose Model Page 1 of 2


Summary Report

City, county, state:Lat / Long / Elev:Time zone:Population (2000):


NuclideH-3Sr-90Ra-226Cs-137Am-241





00:00


Bloomsburg, Columbia, PA41.0161 ° N, 76.3731 ° W, 500 mEastern3,435 / 25,863 / 59,389 (2 / 5 /10 mi)


Inventory1 .OOE+051.00E+011 .OOE+001.00E+011 .OOE+00

Rel. Frac.5.00E-011 .OOE-021 .OOE-021 .OOE-021 .OOE-03

Inh. Frac.1 .OOE+001 .OOE+001.OOE+001 .OOE+001 .OOE+00


05/04/2007 00:000 days, and 01:00


Type

Obs

Dirdeg

270

Speed Stabilitymph class Precip

4.0 None

°F

70

Temp RH%

50

SLC_Fire_Mixed_Default_Met05/06/2007 00:00Close-in + to 10 miles0.1, 0.2, 0.3, 0.5, 0.7, 1.0, 1.5, 2.0 miles


SLC Fire Mixed Default Met-5

Page 2 of 2

AR101318

Example Dose Projection- Safety Light Corp. Superfund SiteSoftware: US NRC RASCAL v3.0.4 Source Term to Dose ModelCase Description: SLC_Fire_H-3_lE5Ci_Default_Met

Assumptions:Fire in Etching Building destroys entire building in approx. 1 hourSource term- 100,000 Curies H3 (this quantity is based on storage of completed H3 exitsigns in the Etching Building by Safety Light Corp. SLC's current possession limit forITis 350,000 Curies for the entire site.).Meteorology- Rascal standard meteorology: 4 mph from 270 deg., stability D, no precip.

SLC Fire H-3 1E5Ci Default Met-1AR101319

Summary Report



County ColumbiaTime Zone EasternLatitude 41.0161°NLongitude 76.3731° W



SLC Fire H-3 1E5Ci Default Met-2AR101320

Summary Report


SLC_Fire_H-3_1 E5Ci_Default_Met05/04/2007 09:15

Case Summary

Event Type

LocationName:City, county, state:Lat / Long / Elev:Time zone:Population (2000):


NuclideH-3





00:00



Safety Light Corp.Bloomsburg, Columbia, PA41.0161 ° N, 76.3731 ° W, 500 mEastern3,435 / 25,863 / 59,389 (2 / 5 /10 mi)


Inventory1.00E+05

Rel. Frac.5.00E-01

Inh. Frac.1 .OOE+00


05/04/2007 00:000 days, and 01:00


DirType deg

Obs 270


4.0 None

°F

70

Temp RH%

50

SLC_Fire_H-3_1 E5Ci_Default_Met05/06/2007 00:00Close-in + to 10 miles0.1, 0.2, 0.3, 0.5, 0.7, 1.0, 1.5, 2.0 miles


SLC Fire H-3 1E5Ci Default Met-3

Page 1 of 1

AR101321

Summary Report


SLC_Fire_H-3_1E5Ci_Default_Met05/04/2007 09:15


0.1(0.16)

1.2E-011.2E-017.7E-023.0E-021.2E-01***

***

***

0.2(0.32)

4.3E-024.3E-022.7E-021.0E-024.3E-02***

***

***

0.3(0.48)

2.6E-022.6E-021.6E-026.3E-032.6E-02***

***

***

0.5(0.8)

1.5E-021.5E-029.6E-033.8E-031.5E-02***

***

***

0.7(1.13)

1.2E-021.2E-027.5E-033.0E-031.2E-02***

***

***

1.(1.61)

9.7E-039.7E-036.1E-032.4E-039.7E-03***

***

***

1.5(2.41)

7.6E-037.6E-034.7E-031.9E-037.6E-03***

***

***

2.(3.22)

6.2E-036.2E-033.9E-031.5E-036.2E-03***

***

***

Dist from releasemiles(kilometers)

Total EDEThyroid CDEAcute LungTotal Acute BoneInhalation CEDECloud ShinePeriod Gnd Shine4-day Ground Shine

Notes:1. Doses exceeding PAGs are underlined.2. Early-Phase PAGs: TEDE - 1 rem, Thyroid'CDE - 5 rem3. *** indicates values less than 0.1 mrem



Dist from releasemiles 3 4 5 7(kilometers) (4.8) (6.4) (8.0) (11.3)

Total EDE 4.0E-03 2.9E-03 2.2E-03 1.4E-03Thyroid CDE 4.0E-03 2.9E-03 2.2E-03 1.4E-03Acute Lung 2.5E-03 1.8E-03 1.4E-03 8.9E-04Total Acute Bone 9.8E-04 7.1E-04 5.4E-04 3.5E-04Inhalation CEDE 4.0E-03 2.9E-03 2.2E-03 1.4E-03Cloud Shine * * * * * * * * * *Period G n d Shine « * * * * * » . « .4-day Ground Shine * * * * * . * » . * » .

Notes:1 . Doses exceeding PAGs are underlined.2. Early-Phase PAGs: TEDE - 1 rem, Thyroid CDE - 5 rem3. *** indicates values less than 0.1 mrem


10(16.1)

8.7E-048.7E-045:5E-042.2E-048.7E-04

Case Summary

Event Type

LocationName:


Safety Light Corp.

Printed: Thursday, May 31 , 2007 1 0:56 by RASCAL v3.0.4 Source Term to Dose Model

SLC Fire H-3 1E5CI Default Met-4

Page 1 of 2

AR101322

Summary Report



NuclideH-3





00:00


Bloomsburg, Columbia, PA41.0161° N, 76.3731° W, 500 mEastern3,435 / 25,863 / 59,389 (2 / 5 /10 mi)


Inventory1.00E+05

Rel. Frac.5.00E-01

Inh. Frac.1 .OOE+00


05/04/2007 00:000 days, and 01:00


Type

Obs

Dirdeg

270


4.0 None

SLC_Fire_H-3_1 E5Ci_Default_Met05/06/2007 00:00Close-in + to 10 miles0.1, 0.2, 0.3, 0.5, 0.7, 1.0, 1.5, 2.0 miles

°F

70

Temp RH%

50


SLC Fire H-3 1E5CI Default Met-5Page 2 of 2

AR101323

Example Dose Projection- Safety Light Corp. Superfund SiteSoftware: US NRC RASCAL v3.0.4 Source Term to Dose ModelCase Description: SLC_Fire_lCi_Ra-226_Default_Met

Assumptions:Fire in Etching Building destroys entire building in approx. 1 hourMeteorology- Rascal standard meteorology: 4 mph from 270 deg., stability D, no precip.Source term- 1 Curie Ra226 (this quantity is based on typical quantity of Ra226 handled byUS Radium).

SLC Fire 1Ci Ra-226 Default Met-1AR101324

Summary Report



County ColumbiaTime Zone EasternLatitude 41.0161°NLongitude 76.3731° W



SLC Fire 1Ci Ra-226 Default Met-2AR101325

Summary Report


SLC_Fire_1 Ci_Ra-226_Default_Met05/04/2007 09:12

Case Summary

Event Type

LocationName:City, county, state:Lat/ Long/Elev:Time zone:Population (2000):


NuclideRa-226





00:00



Safety Light Corp.Bloomsburg, Columbia, PA41.0161°N, 76.3731 °W, 500mEastern3,435 / 25,863 / 59,389 (2 / 5 /10 mi)


Inventory1.00E+00

Rel. Frac.1.00E-02

Inh. Frac.1 .OOE+00


05/04/2007 00:000 days, and 01:00


DirType deg

Obs 270


4.0 None

°F

70

Temp RH%

50

SLC_Fire_1 Ci_Ra-226_Default_Met05/06/2007 00:00Close-in + to 10 miles0.1, 0.2, 0.3, 0.5, 0.7, 1.0, 1.5, 2.0 miles


SLC Fire 1Ci Ra-226 Default Met-3Page 1 of 1

AR101326

Summary Report


SLC_Fire_1 Ci_Ra-226_Default_Met05/04/2007 09:12


0.1(0.16)

0.2(0.32)

0.3(0.48)

0.5(0.8)

0.7(1.13)

1.(1.61)

3.3E-03 1.1E-03 6.8E-04 4.2E-04 3.2E-04 2.6E-04 2.0E-04 1.7E-04H cp_Q4 *** *** *** *** *** *** ***

1.0E-03 3.5E-04 2.1E-04 1.3E-04 * * * * * * * * * * *

3.3E-03 1.1E-03 6.8E-04 4.2E-04 3.2E-04 2.6E-04 2.0E-04 1.7E-04

Dist from releasemiles(kilometers)

Total EDEThyroid CDEAcute LungTotal Acute BoneInhalation CEDECloud ShinePeriod Gnd Shine4-day Ground Shine



1.5(2.41)

2.(3.22)


Dist from releasemiles 3 4 5 7(kilometers) (4.8) (6.4) (8.0) (11.3)

Total E D E 1.1E-04 « * * * * « .Thyroid C D E « . « . « . « .Acute Lung *** • * • • « * «*Total Acute Bone * * * * * * * * * * * *Inhalation CEDE 1.1E-04 « * * • * « •Cloud Shine « . « . « . « .Period G n d Shine * « * * * * * * « *4-day Ground Shine * * * * * * * * * * *



10(16.1)

Case Summary

Event Type

LocationName:


Safety Light Corp.


SLC Fire 1Ci Ra-226 Default Met-4

Page 1 of 2

AR101327

Summary Report



NuclideRa-226





00:00


Bloomsburg, Columbia, PA41.0161 ° N, 76.3731 ° W, 500 mEastern3,435 / 25,863 / 59,389 (2 / 5 /10 mi)


Inventory1 .OOE+00

Rel. Frac.1 .OOE-02

Inh. Frac.1.OOE+00


05/04/2007 00:000 days, and 01:00


DirType deg

Obs 270


4.0 None

SLC_Fire_1 Ci_Ra-226_Default_Met05/06/2007 00:00Close-in + to 10 miles0.1, 0.2, 0.3, 0.5, 0.7, 1.0, 1.5, 2.0 miles

°F

70

Temp RH

50


SLC Fire 1Ci Ra-226 Default Met-5

Page 2 of 2

AR101328

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