Loudoun County Asphalt Company, L.L.C. - nrc.gov · North East Technical Services, Inc. Certifies...

Loudoun County Asphalt Company, L.L.C. Asphaltic Concrete

850 East Gude Drive, Suite A, Rockville, Maryland 20850

Plant Location: 42050 Cochran Mill Road Leesburg, Virginia 201 75 Plant Telephone: 703-669-9001 Plant Fax: 703-669-9003

U S . Nuclear Rugulatory Commission Region I 475 Allentown Road King Of Prussia, PA 19406- 14 I5

Attn: Mr. John D. Kinneman. Chief

June 16,2005

Re: Reply to a Notice of Violation License No. 45-25476-01

0303S1A3

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Dear Sir:

We respectfully submit the following responses to the violation notice given our facility at 42050 Cochran Mill Road, Leesburg, Virginia 21075.

Violation A. The licensee in accordance with NRC regulations will maintain the proper receipt of the Troxler Model 4640-B portable gauge at the Leesburg, Virginia facility. To insure that no further violations of this type occur all regulations and procedures regarding the transferring of portable gauges have been discussed with individuals responsible with handling of the portable gauge at our Leesburg facility.

Violation B.

The licensee in accordance with NRC regulations has had all required leak testing performed on the Troxler Model 4640-B referenced in Docket No. 03035123. All leak testing information is available at our Leesburg facility. Maintaining the leak test records at our facilitJ? in Leesburg will insure that this violation will not be repeated.

Violation C.

The licensee has conducted a physical inventory as per license Condition 16 requirements. The physical inventory will be conducted every 6 months as required and those records maintained at our Leesburg facility. All matters concerning inventory of the portable gauge have been discussed with the personnel responsible for maintaining those records to insure that this volition will not be repeated.

Enclosed you will find leak test results, dosimeter reports, and training certificates.

We hope the above responses meet with your approval, ifyou require any additional information do not hesitate to contact me.

Sincerely,

safely oficer

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North East Technical Services, hc.

Has successfdly completed tmnq in accordance with policies set forth by the following d e s and regulations governing Havnat traming require me^: 49CFR subpart W and IATA 1.5.2. Person listed above has demonstrafed a thorough understanding of a l l aspects needed for transportation and specific emphasis was placed on partible nuclear density gauges. A closed book examination was admhhmed and a passing score was acheved. Subjectsincluded in this course were as follows: Radidq$cal Safety - principles and prscbices of radiation protection, le&-testing procedures, measurement of radioactivity,

biological effects of radiation, incident, Storage, ALARA &d emergency procedures.

. Instructor -6ouglas C. sims Date of Training: April 21,2005

North East Technical Services, Inc. Certifies that

Has successhlly completed training in accordance with policies set forth by the following rules and regulations governing Havnat training requirements: 49CFR subpart H and IATA 1.5.2. Person listed above has demonstrated a thorough understanding of all aspects needed for transportation and specific emphasis was placed on portable nuclear density gauges. A closed book examination was administered and a passing score was achieved. Subjects included in this course were as follows: Radiological Safety - principles and practices of radiation protection, leak-testing procedures, measurement of radioactivity,

biological effects of radiation, incident, storage, ALARA and emergency procedures.

Instructor - Jeffrey D. Caston Date of Training: July 20,2004

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F o 0. D A Y 9 I N C . ;% ./r : & HAS SUCCESSFULLY COMPLETED T H E TROXLER ELECTRONIC LABORATORIES, INC.

TRAINING COURSE FOR TI IE USE OF NUCLEAR TESTING EQUIPMENT.

SUBJECTS INCLULIEU IN TI IIS COURSE WERE AS FOLLOWS:

Ra t lio 1 ox ica I Sq fe ty 1. Priiicip1c.T cirrd prwtic*es 01 r t i t l i t i r ior i 5. Radioactivity r~icasiireriierit staritlat-dizatiori

2. 'Leak 'testirtg procedures. . . irwft'ur)terits.'? 1

3.

. -. _.- -.._-__ . _-__ tirid - .. ntoriitoririg - tecliriiques , - - - .. arid . - --..--! pi-otectiori.

'EAatherrin/ics arid calculatiorts basic t Accjdert f arid iriciderit procedures. Proccdirres fi)r ititclear. gauge storage the rise cirrti irreasirrmciit of

radioacli\*it). arid ti-aiisporititiori. 4. Biologictrl cflccts of radiatiori.

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I . Iiistriiriierit t fierory I

2. 3. Mairiteriarice -

Ope k t t ii r 8 11 I ~ ~ e d i r I -es 5. Gauge caliliratiori

C E R T I F I C A T E :!: 070013 c h - L Q, $'@)QJ -,

FKANK 0. JC INSTRUCTOR

9 / 1 2 / 9 5 DATE

W I L L I A M F PRESIDENT

T R U X L E K

LARRY K. CROUSE, S R . of

F . O . l D A Y COMPANY, I N C .

HAS SUCCESSFULLY COMPLETED THE TROXLER ELECTRONIC LABORATORIES, I N C ., TRAINING COURSE F O R THE USE OF NUCLEAR TESTING EQUIPMENT.

S U B J E C T S INCLUDED I N THIS COURSE WERE AS FOLLOWS:

Radio l ogi ea 2 Sa fe t y

1. Princ ip les and prac t i ces o f radia t ion 5 . Radioact iv i ty measurement s tandardizat ion

2. Leak t e s t i n g procedures. i n s trwnen t s . 3. .Mathematics and ca lcu la t ions bas ic t o 6 . Accident and i nc iden t procedures.

pro tec t ion . and monitoring techniques and

the use and measurement o f radi o a c t i v i t y . 7. Procedures f o r nuclear gauge storage

and transportat ion. 4 . Biological e f f e c t s o f radia t ion . 8. General sa f e t y precaut ions.

Gauge Operation 1 . Instrwnent theory 4 . Field appl ica t ion 2. Operating procedures 5 . Gauge ca l ib ra t ion 3 . Main t enpqce

North East Technical Services, Inc. Certifies that

Has successfully completed training in accordance with policies set forth by the following rules and regulations governing Hazmat training requirements: 49CFR subpart H and IATA 1.5.2. Person listed above has demonstrated a thorough understanding of all aspects needed for transportation and specific emphasis was placed on portable nuclear density gauges. A closed book examination was admmistered and a passing score was achieved. Subjects included in this course were as follows: Radiological Safety - principles and practices of radiation protection, leak-testing procedures, measurement of radioactivity,

- biological effects radiation, incident, storage, M a and emergency procedures. 4- u Instructor - Jeffrey D. Caston& Date of Training: July 20,2004

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;.'H - HUMBOLDT SCIENTIFIC, INC RSO Certification

James W. Perine HAS SWCCESSE'ULLY COMPLETED A CERTIFIED

RADIATION SAFETY OFFICER COURSE Subjects included were: RSO Duties and Responsibilities Radiation Safety Practices Regzdatory Requirements DosdShielding Requirements

Risk

Raditztion Measurement Operating and Emergency Procedures

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- _ - - This is to certify that -__- - -- ~ ..

Jim Perine Has increased his personal knowledge and enhanced fiis industry awareness

by successfully completing One Day Radiation and Hazardous Material Safety Training

For Using Nuclear Density Guages January 22,2001

w Executive Director

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DOSIMETRY REPORTS WERE REMOVED FROM THIS DOCUMENT BECAUSE IT CONTAINS INDIVIDUALS NAMES, SOCIAL SECURITY NOS. AND BIRTHDATES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MID-ATLANTIC RADIATION PHYSICS 7233-D HANOVER PARKWAY (BC1) 345-6803 GREENBELT, MD 20770

LEAK TESTING OF TROXLER GAUGE SEALED SOURCES Francis 0. Day Company, Inc. 850.East Gude Drive, Suite A

_ - -‘ Rockville, MD 20850

January 4, 2005

-

The following sealed sourres were leak tested using a wet and dry wipe technique on December 22, 2004, by personnel-of Francis 0. Day Co as per license conditions specified in MD-31-172-01. Sources (Cs-137) were identified by the gauge model and serial number as indicated below. Leak testing avas conducted by wiping the sources and counting the wipes in a NaI well counter having a background equivalent activity (BEA) of 0.0009 pCi of Cs-137. Counting procedures were specihed under conditions specified in MD-33-023-01. No wipes revealed removable contamination in excess of the BEA except as noted below, indicating non-leaking sources.

1.

2.

3.

4.

5.

6.

7. / -

Removable Activitv (uCi)

Troxler 4640 B, S / N 2411 (Cs-137) (F/V)

Troxler 4640 B, S / N 2488 (Cs-137) (C/C)

Troxler 4640 B, S/ N 2489 (Cs-137) (Frederick)

< 0.001

< 0.001

< 0.001

Troxler 4640 B, S / N 1728 (Cs-137) (Frederick)

Troxler 4640 B, S f N 2407 (Cs-237) (Rockville)

< 0.001

< 0.001

Troxler 4640 B, S /N 23% (Cs-137) (F/ V) < 0.001

Troxler 4640 E, SIN2153 (Cs-137) (Rockville) X ~ ~ 4 ’ ” cO*#.s), 0.001

Please confirm the above listing for accuracy and notify us of any discrepancies.

Alan W. Goldey, B.S. /

f f ! ! 1- 1 0 -zoo%- Safetv Manager Date

MID-ATLANTIC RADIATION PHYSICS 7233-D HANOVER PARKWAY (301) 345-6803 GREENBELT, MD 20770

LEAK TESTING OF TROXLER GAUGE SEALED SOURCES Francis 0. Day Company, Inc. 850 East Gude Drive, Suite A

Rockville, MD 20850

July 1,2004

The following sealed sources were leak tested using a wet and dry wipe technique on June 23 or June 24,2004, by personnel of Francis 0. Day Co as per license conditions specified in MD-31-172-01. Sources (Cs-137) were identified by the gauge model and serial number as indicated below. Leak testing was conducted by wiping the sources and counting the wipes in a NaI well counter having a background equivalent activity (BEA) of 0.0009 pCi of (3-137. Counting procedures were specified under conditions specified in MD-33-023-01. No wipes revealed removable contamination in excess of the BEA except as noted below, indicating non-leaking sources.

Removable Activitv CpCi)

1. Troxler 4640 B, S / N 2411 (Cs-137) (F/V) < 0.001

2. Troxler 4640 B, S/N 2488 ((3-137) (C/C) < 0.001

3.

4.

5.

6.

Troxler 4640 B, S/h' 2459 (Cs-137) (Frederick)

Troxler 4640 B, S/N 1728 ((3-137) (Frederick)

Troxler 4640 B, S/N 2407 ((3-137) (Rockville)

Troxler 3440, S/N 21954 (Cs-137) (Rockville)

< 0.001

< 0.001

< 0.001

< 0.001

7. Troxler 3440, S/N 22018 ((3-137) (Rockville) < 0.001

8. Troxler 4640 B, S /N 2335 ((3-137) (F/V) < 0.001

9. Troxler 4640 B, S/N 2153 (Cs-137) (Rockville) < 0.001


Alan W. Goldey, B.S. ¶Y

?-7 -o/

Safety Manager Date

MID-ATLANTIC RADIATION PHYSICS, INC. 7233-D HANOVER PARKWAY (301) 345-6803 GREENBELT, MD 20770

LEAK TESTING OF TROXLER GAUGE SEALED SOURCES Francis 0. Day Company, Inc.

14900 Southlawn Lane Rockville, MD 20850

December 22,2003

The following sealed sources were leak tested using a wet and dry wipe technique on December 15, 2003, by personnel of Francis 0. Day Co as per License conditions specified in MD-31-17241. Sources (Cs-137) were identified by the gauge model and serial number as indicated below. Leak testing was conducted by wiping the sources and counting the wipes in a NaI well counter having a background equivalent activity (BEA) of 0.0009 pCi of Cs-137. Counting procedures were specified under conditions specified in MD-33-02341. No wipes revealed removable contamination in excess of the BEA except as noted below, indicating non-leaking sources.

Removable Activitv (pCi)

1.

2.

3.

4.

5.

6.

7.

8.

9.

Troxler 4640 B, S /N 2411 (Cs-137) (F/V)

Troxler 4640 B, S / N 2488 (Cs-137) (C/C)

Troxler 4640 B, S /N 2489 (Cs-137) (Frederick)

Troxler 4640 B, S/N 1728 (Cs-137) (Frederick)

Troxler 4640 8, S / N 2407 ((3-137) (Rockville)

Troxler 3440, S / N 21954 (Cs-137) (Rockville)


Troxler 4640 B, S /N 2335 (Cs-137) (Rockville)


< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

>qG < 0.001


Safetv Manarer Date

MID-ATLANTIC RADIATION PHYSICS, INC. 7233-D HANOVER PARKWAY (301) 345-6803 GREENBELT, M D 20770


14900 Southlc3wn Lane Rockville, MD 20850

Jirne 23, 2003

The following sealed sources were leak tested using a wet and dry wipe technique on June 16,2003, by personnel of Francis 0. Day Co as per license conditions specified in MD-31-172-01. Sources (Cs- 137) were identified by the gauge model and serial number as indicated below. Leak testing was conducted by wiping the sources and counting the wipes in a Nal well counter having a background equivalent activity (BEA) of 0.0009 pCi of Cs-137. Counting procedures were specified under conditions specified in MD-33-023-01. No wipes revealed removable contaminntion in excess of the 6EA except as noted below, indicating non-leaking sources.

1 .

2.

3.

4.

5.

6.

7.

8.

9.

Troxler 4640 B, S / N 241 1 (Cs-137) (F/V)

Troxler 4640 6, S / N 2188 ((3-137) (F/V)

Troxler 4640 B, S / N 2489 ((3-137) (Rockvil le)

Troxler 4640 6, S/N 1728 (Cs-137) (Rockville)

Troxler 4640 B, S/N 2407 (Cs-137) (Rockville)

Troxler 3440, S / N 21954 ((3-137) (Rockville)

Troxler 3430, S / N 22018 ((3-137) (Rockville)

Troxler 4640 E, S / N 2335 (Cs-137) (Frederick)

Troxler 4640 B, S / N 2153 (Cs-137) (Loirdoun Co. Asphalt)

< O.OC~1

< 0.001

< 0.001

< 0.001

< 0.0c)l

< 0.001

< 0.00 1

< 0.00 1

< 0.001

Please confirm the above listing for ;Iccuracy a n d notify us of any discrepincies.

‘ I




December 23,2002

The following sealed sources were leak tested using a wet and dry wipe technique on December 15, 2002, by personnel of Francis 0. Day Co as per license conditions specified in MD-31-172-01. Sources (Cs-137) were identified by the gauge model and serial number as indicated below. Leak testing was conducted by wiping the sources and counting the wipes in a NaI well counter having a background equivalent activity (BEA) of 0.0009 pCi of Cs-137. Counting procedures were specified under conditions specified in MD-33-023-01. No wipes revealed removable contamination in excess of the BEA except as noted below, indicating non-leaking sources.


1 .

2.

3.

4.

5.

6.

7.

8.

9.

Troxler 4640 B, S /N 2411 (Cs-137) (F/V)

Troxler 4640 B, S/WMl?(Cs-137) (F/V)

Troxler 4640 B, S / N 2489 (Cs-137) (F/V)

Troxler 4640 B, S / N 1728 (Cs-137) (Rockville)

Troxler 3241 B, S / N 2407 (Cs-137) (Rockviile)

Troxler 3440, S /N 21954 (Cs-137) (Rockville)



Troxler 4640 B, S / N 2153 (Cs-137) (Loudoun Co. Asphalt)

Z d B B

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001


Alan W. Goldey, B.S

1-2 -2083 I

Safety Manager Date

Oug 26 '02 1 4 ~ 1 3 N0.005 P . 0 2 MID-QTLRNTIC RFtD P H Y S I TELz301-345-6804




June 24,2002

The following sealed sources were leak tested using a wet and dry wipe technique on June 15,2002, by personnel of Francis 0. Day Co as per license conditions specified in MD-31-172-01. Sources (Cs- 137) were identified by the gauge model and serial number as indicated below. Laak testing was conducted by wiping the sources and counting the wipes in a NaI well counter having a background equivalent activity @EA) of O.OOO9 pCi of 0-137. Counting procedures were specified under conditions specified in MD-33-023-01. No wipes revealed removable contamination in excess of the BEA except as noted below, indicating non-leaking sources.

Removable Activitv fuCi)

1.

2.

3.

4.

5.

6.

7.

a. 9.

10.

I f .

Troxler 4640 B, S/N 241 1 (Cs-137) (F/V)

Troxler 4640 B, S/N 2412 (Cs-137) (F/V)

Troxler 4640 B, S/N 1726 (Cs-137) (F/V)


Troxler 3241 6, S/N 2407 (Cs-137) (Rockville)

Troxler 3241 C, S / N 597 (Cs-137) (Rockville)

Troxler 3241 C, S/N 614 (Cs-137) (F/V)


Troxler ,3440, S/N 22018 ((3-137) (Rockville)


Troxler 4640 B, S/N 2153 (Cs-137) (Loudoun Co. Asphalt)

c 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.01

< 0.001

Please confirm the above listing for accuracy and notify us ol any discrepancies.

Alan W. Goldey, B.S. / ' .

7- 2-220Qt Safety Manager Date




July 11,2001

The following sealed sources were leak tested using a wet and dry wipe technique on Junel5,2001, by personnel of Francis 0. Day Co as per license conditions specified in MD-31-172-01. Sources (Cs- 137) were identified by the gauge model and serial number as indicated below. Leak testing was conducted by wiping the sources and counting the wipes in a NaI well counter having a background equivalent activity (BEA) of O.OoO9 pCi of Cs-137. Counting procedures were specified under conditions specified in MD-3342341. No wipes revealed removable contamination in excess of the BEA except as noted below, indicating non-leaking sources.


1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Troxler 4640 B, S/N 1307 (Cs-137) (F/V)

Troxler 4640 B, S/N 1726 (Cs-137) (F/V)



Troxler 3241 C, S/N 597 (Cs-137) (Rockville)

Troxler 3241 C, S /N 614 (Cs-137) (F/V)



Troxler 4640 8, S/N 2335 (Cs-137) (Frederick)

Troxler 4640 B, S /N 2153 (Cs-137) (Loudoun Co. Asphalt)

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001


Alan W. Goldey, B.S.

Safety Manager Date



14900 Southlawn Lane Rockville,MD 20850

December 21,2001

The following sealed sources were leak tested using a wet and dry wipe technique on December 15, 2001, by personnel of Francis 0. Day Co as per license conditions specified in MD-31-17241. Sources (Cs-137) were identified by the gauge model and serial number as indicated below. Leak teshng was conducted by wiping the sources and counting the wipes in a NaI well counter having a background equivalent activity (BEA) of 0.O009 VCi of Cs-137. Counting procedures were specified under conditions specified in MD-33-023-01. No wipes revealed removable contamination in excess of the BEA except as noted below, indicating non-leaking sources.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

Troxler 4640 B, S/N 2411 (Cs-137) (F/V)

Troxler 4640 B, S/N 2412 (Cs-137) (F/V)

Troxler 4640 B, S/N 1726 (Cs-137) (F/V)



Troxler 3241 C, S/N 597 (Cs-137) (Rockville)

Troxler 3241 C, S/N 614 (Cs-137) (F/V)




Troxler 4640 B, S/N 2153 (Cs-137) (Loudoun Co. Asphalt)

Removable Activity [uCi)

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

Please confirm the above listing for accuracy and nohfy us of any discrepancies.


- Safety Manager Date

M I D - Q T L A N T I C PAC1 P H Y S I TELz301-345-6804 Nov 0 5 ' 0 1 1 0 ~ 4 6 N o . 0 0 1 P . 0 2

MID-ATLANTIC 7233-D PARKWAY (301) 34

LEAK T"INGOF TROXLER -. 14900 Southlawn Lane Rwkville, MD .u)850' ,C

I - July 11,2001

technique on JunelS, 2001, . t ".r

s c a d source^ were leak tested using a wet and dry wi license conditions spedELed in &1-1,2al. surcee (cs- and serial number as Wcated below. Leak testing was

counting the wipes in a NaI well counter having a background of Cs-137, Counting procedures were a p e d under No wipes revealed renaamblq WdltamlMtion in excese o€ the

BBA exapt a~ noted below, indkatlng non-leaking sourced.' CI' a 1 . t

Removable P --

I - LYJ

1. Tmxler WO B, S/N 1307 (CS-137) (P/V) c 0,001

2. Troxler 4640 B, S/N 1726 (Cs-137) (F/V) c 0.001 3 TroXlei4§4(? B, S/y 1728 (Ce-137) (Rochille) * J ! - - _<OWI,. 4. Troxler 4640 8, S/N 2075 (Cs-137) (Rockville) < 0.001

5. Troxlet 3241 C, S/N 5W (Cs-137) (Rockville) < 0.002

6. Tro* 3241 C, S/N 614 (Cs-137) (F/V) c 0.001 7. Troxler 3440, S/N 21954 ((26-137) (Rocbilk) < 0.001

8. 3440, S/N 22018 (0-137) ( R ~ k v i l k ) .c 0.001

9. Troxler 46ao 8, S/N 2335 (Cs-137) (Frederick) < 0.001

10, Tmxler 4640 B, S / N 2153 (Cs-137) (Loudoun Co. Asphalt) c 0.001

P l e a confirm the above listing for accuracy and notify ue of any diecrepandea.

Alan W. Coldey, B.S.




January 3,2001

The following sealed sources were leak tested using a wet and dry wipe technique on December 15, 2000, by personnel of Francis 0. Day Co as per license conditions specified in MD-31-172-01. Sources (Cs-137) were identified by the gauge model and serial number as indicated below. Leak testing was conducted by wiping the sources and counting the wipes in a NaI well counter having a background equivalent activity (BEA) of 0.0009 pCi of Cs-137. Counting procedures were specified under conditions specified in MD-33-023-01. No wipes revealed removable contamination in excess of the BEA except as noted below, indicating non-leaking sources.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

Troxler 46408, S/N 1307 ((3-137) (F/V)

Troxler 46408, S/N 1726 (Cs-137) (F/V)

Troxler 4640B, S/N 1728 (Cs-137) (Rockville)

Troxler 4640B, S/N 1742 (Cs-137) (F/V)

Troxler 4640B, S/N 2075 (Cs-137) (Rockville)

Troxler 3241C, S/N 597 (Cs-137) (Rockville)

Troxler 3241C, S/N 614 (Cs-137) (F/V)



Troxler 46408, S/N 2335 (Cs-137) (Frederick)

Troxler 4640B, S/N 2153 (Cs-137) (Loudoun Co. Asphalt)

Removable Activitv (VCi)

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001



Safety Msnager Date




July 11,2000

The following sealed sources were leak tested using a wet and dry wipe technique on June 15,2000 by personnel of Francis 0. Day Co as per license conditions specified in MD-31-172-01. Sources (Cs- 137) were identified by the gauge model and serial number as indicated below. Leak testing was conducted by wiping the sources and counting the wipes in a NaI well counter having a background equivalent activity (BEA) of 0.0009 pCi of (3-137. Counting procedures were specified under conditions specified in MD-33-023-01. No wipes revealed removable contamination in excess of the BEA except as noted below, indicating non-leaking sources.


1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Troxler 46408, S/N 1307 (Cs-137)

Troxler 4640B, S/N 1726 ((3-137)

Troxler 4640B, S/N 1728 (Cs-137)

Troxler 4640B, S/N 1742 (Cs-137)

Troxler 4640B, S/N 2075 (Cs-137)

Troxler 3241C, S/N 597 (Cs-137)

Troxler 3241C, S/N 614 (Cs-137)

Troxler 3440, S /N 21954 (Cs-137)

Troxler 3440, S/N 22018 (Cs-137)

Troxler 46408, S/N 2153 (Cs-137) (Loudoun Co. Asphalt)

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001



1 /y: P j M - 7//?/ b' 206 G Safety Manager Date



14900 Southlawn Lane Rockvitle, MD 20850

January 22,2000

The following sealed sources were leak tested using a wet and dry wipe technique on December 15, 1999 by personnel of Francis 0. Day Co as per license conditions specified in MD-31-172-01. Sources (Cs-137) were identified by the gauge model and serial number as indicated below. Leak testing was conducted by wiping the sources and counting the wipes in a NaI well counter having a background equivalent activity (BEA) of 0,0009 pCi of Cs-137. Counting procedures were specified under conditions specified in MD-33-023-01. No wipes revealed removable contamination in excess of the BEA except as noted below, indicating non-leaking sources.


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Troxler 46408, S/N 1307 (Cs-137)

Troxler 4640B, S/N 1726 (Cs-137)

Troxler 46408, S/N 1728 (Cs-137)

Troxler 46408, S/N 1742 (Cs-137)

Troxler 4640B, S/N 2075 ((3-137)

Troxler 3241C, S/N 597 (Cs-137)

Troxler 3241C, S /N 614 ((3-137)

Troxler 3440, S/N 21954 (Cs-137)

Troxler 3440, S/N 22018 (Cs-137)

Troxler 46408, S/N 2153 (Cs-137) (Loudoun Co. Asphalt)

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001



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Safety Manager Date

Loudoun County Asphalt Company, L.L.C. - nrc.gov · North East Technical Services, Inc. Certifies...

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