E
NGIN E E R S
 P
LAN NE R S
 S
C I E N TI S T S
 C
ON S TR UC TI ON
M
AN AG ER S
936 RIDGEBROOK ROAD  SPARKS, MD 21152  410-316-7800  (FAX) 410-316-7935
MCPS RADON TESTING
Executive Summary: Montgomery Knolls Elementary School
Date of Test Report:
Round of Testing:
# Rooms Tested:
# Rooms ≥ 4.0 pCi/L:
Low Value:
High Value:
3/3/2016 (Rev 1)
Initial
Follow-up
Post Remediation
73
4
< 0.3
6.2
Rooms with results ≥ 4.0 pCi/L:
Room 100B (6.2 pCi/L), Room 100D (5.3 pCi/L), Media 2 (5.0 pCi/L), Room 157 (4.1 pCi/L),
Project Status:
Initial testing completed; re-test needed for results ≥ 4.0 pCi/L.
Initial testing completed; missing or compromised samples need re-test.
KC I T E C H N O L O G I E S , I N C .
www.kci.com
Employee-Owned Since 1988
E
NGIN E E R S
 P
LAN NE R S
 S
C I E N TI S T S
 C
ON S TR UC TI ON
M
AN AG ER S
936 RIDGEBROOK ROAD  SPARKS, MD 21152  410-316-7800  (FAX) 410-316-7935
March 3, 2016 (Rev 1)
Mr. Richard Cox
Indoor Air Quality Team Leader
Montgomery County Public Schools
850 Hungerford Drive
Rockville, MD 20850
Re:
Radon Testing Services
KCI Job # 12146341.20
Location:
Montgomery Knolls Elementary School
807 Daleview Drive
Silver Spring, MD 20901
Dear Mr. Cox:
KCI Technologies, Inc. (KCI) is pleased to submit the following report to the Montgomery County Public
Schools (MCPS) pursuant to completing a “short-term” 3 day radon test for the Montgomery Knolls
Elementary School, located at 807 Daleview Drive in Silver Spring, Maryland 20901 (subject site).
Scope of Services:
KCI conducted radon testing at the subject site to evaluate indoor radon levels relative to the USEPA's
recommended action level of 4.0 picocuries per Liter (pCi/L) - the level at which EPA recommends that
schools take action to reduce the level. KCI conducted the radon testing in accordance with American
Association of Radon Scientists and Technologists (AARST) Protocol for Conducting Measurements of
Radon and Radon Decay Products in Schools and Large Buildings. A National Radon Safety Board
(NRSB) Radon Measurement Specialist (certification #14SS056) supervised the testing. Additional
information on radon management and the health effects of radon exposure is available from
www.montgomerycountymd.gov/dep/air/radon or www.epa.gov/radon.
KCI visited the site on December 21, 2015 and deployed eighty-eight (88) activated charcoal (AC) radon
test kits. KCI deployed radon test kits in frequently-occupied ground contact rooms, and other areas, (if
applicable) in accordance with AARST guidance. A floor plan map of the building with the test locations
is included as Attachment A of this report.
As a quality control measure, KCI included duplicate samples, field blanks, lab transit blanks, and office
blanks in accordance with AARST recommendations. In addition, KCI submitted six (6) test kits to
Bowser-Morner, Inc. as spike samples. The spiked tests were exposed to a known radon concentration by
Bowser-Morner prior to being returned to the laboratory for analysis.
KCI returned to the site on December 24, 2015 to retrieve the radon sampling test kits. KCI shipped all
radon tests via overnight delivery to Airchek, Inc. for analysis by gamma-ray spectroscopy. Airchek, Inc.
is a NRSB certified analytical laboratory for radon analysis (certification # ARL1402) located at 1936
KC I T E C H N O L O G I E S , I N C .
www.kci.com
Employee-Owned Since 1988
Mr. Richard Cox
March 3, 2016
Page 3
Butler Bridge Road, Mills River, North Carolina.
Evaluation of Testing Conditions:
The operating condition that represents the greatest amount of significantly occupied time for this
building is; heating active, with outdoor temperature averages ≤ 65° F.
KCI concludes that the test period reasonably represents normal conditions when the building is
significantly occupied. Clear characterization of the radon hazard is most likely to be observed under this
normal operating condition. Based on the evaluation of test conditions, this test should reasonably
characterize radon hazards.
KCI also conducted observations of field conditions which could affect the results of the test and
compiled weather data for the testing period. KCI recorded observations of the following conditions in
each room at the time of deployment and collection of the radon test kits:






Indoor temperature,
HVAC Operation,
Dehumidifier operation,
Humidifier operation,
Ceiling fan operation, and
Open windows or doors.
Results:
The results of the radon test analysis indicated the following:
Radon Concentration
Room
100B
100D
≥4.0 piC/L
Media 2
157
See Attachment B
<4.0 piC/L
Result
6.2
5.3
5.0
4.1
Notes:
D- Duplicate sample
All field blanks, office blank, and lab transit blanks had test results of less than the laboratory detection
limit of 0.3 pCi/L. Review of the duplicate sample analysis indicates that adequate laboratory
measurement precision was achieved. The Spike sample analysis results indicate the laboratory is
operating within statistical control limits.
The sampling locations, field observations, and analytical results are listed on Table 1 (Attachment B).
The laboratory analytical results are also attached (Attachment C). Laboratory results and exposure data
for the spike samples are also included in Attachment C.
Our professional services have been performed in accordance with customary principles and practices in
the field of industrial hygiene and engineering. If you have any questions or comments regarding this
report, please feel free to contact me at (410) 316-7800.
KC I T E C H N O L O G I E S , I N C .
www.kci.com
Employee-Owned Since 1988
Mr. Richard Cox
March 3, 2016
Page 4
Sincerely,
James M. Moulsdale
Radon Measurement Specialist
KCI Technologies, Inc.
Attachments:
A- Floor Plan with Test Locations
B- Table 1-Radon Test Summary Spreadsheet
C- Laboratory Analytical Results
KC I T E C H N O L O G I E S , I N C .
www.kci.com
Employee-Owned Since 1988
ATTACHMENT A
Floor Plan With Test Locations
ATTACHMENT B
Radon Test Summary Spreadsheet
Table Notes:
AC- Activated Charcoal
ACI- Air Chek, Inc.
D- Duplicate
FB- Field Blank
KCI- KCI Technologies, Inc.
OB- Office Blank
PM- Project Manager
QC- Quality Control
Radon Testing Results
Montgomery Knoll ES
Test Period: 12/21/15-12/24/15
Kit Number
7713349
7713358
7713350
7713352
7713354
7713361
7713356
7713364
7713360
7713414
7713365
7713377
7713366
7713367
7713368
7713378
7713371
7713363
7713372
7713369
7713370
7713385
7713382
7713388
7713389
7713396
7713398
7713392
7713390
7713391
7713394
7713397
7713400
7713393
7713416
7713381
7713373
7713375
7713376
7713422
7713383
7713380
7713379
7713384
7713412
7713340
Table Note:
* Missing or Compromised Sample
Room / Area
101
104
106
108
110
111
112
113
114
117
118
120
121
122
123
124
125
127
128
130
132
133
138
140
143
144
146
147
150
151
152
153
154
157
170
171
173
175
177
186
188
190
192
196
202
100A
Result
1.9
1.5
1.3
1.4
1.3
2.4
1.5
2.0
1.6
3.9
1.3
1.5
1.9
1.6
2.0
1.9
0.8
0.9
1.3
1.2
0.8
2.4
1.1
1.2
1.0
1.2
1.4
0.7
1.7
1.9
< 0.3
2.3
0.7
4.1
1.3
0.8
1.0
1.2
1.2
< 0.3
< 0.3
0.9
1.8
0.7
0.9
3.1
Radon Testing Results
Montgomery Knoll Es
Test Period: 12/21/15-12/24/15
Kit Number
7713346
7713344
7713347
7713343
7713348
7713353
7713351
7713339
7713321
7713337
7713420
7713419
7713428
7713418
7713413
7713427
7713404
7713410
7713424
7713374
7713386
7713399
7713387
7713426
7713345
7713359
7713357
7713355
7713362
Table Note:
* Missing or Compromised Sample
*
*
Room / Area
100B
100C
100D
100F
100H
100I
100J
100K
102A
102B
118C
118E
149B
168 (missing)
168A
170C
170D
170E
170F
171A
194 (missing)
BSM
CAFE
CAFÉ
MAIN OFFICE
MEDIA 1
MEDIA 2
MEDIA 2
PEP
Result
6.2
2.5
5.3
2.7
2.0
3.5
2.4
2.7
3.8
3.2
1.0
1.2
1.1
2.9
1.4
< 0.3
1.3
1.7
0.6
1.1
1.4
1.3
2.1
1.9
3.3
5.0
1.6
Radon Testing Results
Montgomery Knoll ES
Test Period: 12/21/15-12/24/15
Kit Number
7713334
7713341
7713402
7713408
7713403
7713406
7713425
7713405
7713342
7713338
7713411
7713409
7707320
Table Note:
* Missing or Compromised Sample
QC Type
D (100A)
D (102B)
D (110)
D (111)
D (112)
D (114)
D (170C (MONT KNOLL)
D (170D (MONT KNOLL)
D (MAIN OFFICE)
FB (102A)
FB (104)
FB (106)
OB (0)
Result
2.7
3.3
1.4
2.0
1.9
1.5
1.0
0.5
1.9
2.6
< 0.3
< 0.3
< 0.3
ATTACHMENT C
Laboratory Analytical Results
January
12, ** LABORATORY ANALYSIS
REPORT **
2016
Radon test result report for:
MONTGOMERY KNOLL ES
MAIN
Kit #
7707320
7713334
7713340
7713346
7713344
7713347
7713343
7713348
7713353
7713351
7713339
7713349
7713321
7713338
7713337
7713341
7713411
7713358
7713409
7713350
7713352
7713354
7713402
7713408
7713361
7713403
7713356
7713364
7713406
7713360
7713414
7713365
7713420
7713419
7713377
7713366
7713367
Room Id
0
100A
100A
100B
100C
100D
100F
100H
100I
100J
100K
101
102A
102A
102B
102B
104
104
106
106
108
110
110
111
111
112
112
113
114
114
117
118
118C
118E
120
121
122
Started
2015-12-21 @ 12:00 pm
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 12:00 pm
2015-12-21 @ 11:00 am
2015-12-21 @ 12:00 pm
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 11:00 am
2015-12-21 @ 12:00 pm
2015-12-21 @ 11:00 am
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 11:00 am
2015-12-21 @ 2:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 2:00 pm
2015-12-21 @ 2:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
Ended
2015-12-24 @ 12:00 pm
2015-12-24 @ 10:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
pCi/L
< 0.3
2.7 ± 0.4
3.1 ± 0.5
6.2 ± 0.6
2.5 ± 0.4
5.3 ± 0.6
2.7 ± 0.5
2.0 ± 0.4
3.5 ± 0.5
2.4 ± 0.4
2.7 ± 0.4
1.9 ± 0.4
3.8 ± 0.5
2.6 ± 0.4
3.2 ± 0.5
3.3 ± 0.5
< 0.3
1.5 ± 0.4
< 0.3
1.3 ± 0.4
1.4 ± 0.4
1.3 ± 0.4
1.4 ± 0.4
2.0 ± 0.4
2.4 ± 0.4
1.9 ± 0.3
1.5 ± 0.4
2.0 ± 0.4
1.5 ± 0.4
1.6 ± 0.4
3.9 ± 0.5
1.3 ± 0.4
1.0 ± 0.3
1.2 ± 0.4
1.5 ± 0.4
1.9 ± 0.4
1.6 ± 0.4
Analyzed
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-28
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-28
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
Air Chek, Inc. 1936 Butler Bridge Rd, Mills River, NC 28759-3892 Phone: (828) 684-0893 Fax: (828) 684-8498
January
12, ** LABORATORY ANALYSIS
REPORT **
2016
Radon test result report for:
MONTGOMERY KNOLL ES
MAIN
Kit #
7713368
7713378
7713371
7713363
7713372
7713369
7713370
7713385
7713382
7713388
7713389
7713396
7713398
7713392
7713428
7713390
7713391
7713394
7713397
7713400
7713393
7713418
7713413
7713416
7713427
7713404
7713410
7713424
7713381
7713374
7713373
7713375
7713376
7713422
7713383
7713380
7713379
Room Id
123
124
125
127
128
130
132
133
138
140
143
144
146
147
149B
150
151
152
153
154
157
168
168A
170
170C
170D
170E
170F
171
171A
173
175
177
186
188
190
192
Started
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 2:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
@
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 2:00 pm
2015-12-21 @ 2:00 pm
2015-12-21 @ 2:00 pm
2015-12-21 @ 2:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
Ended
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
@
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 10:00 am
pCi/L
2.0 ± 0.4
1.9 ± 0.4
0.8 ± 0.3
0.9 ± 0.4
1.3 ± 0.4
1.2 ± 0.4
0.8 ± 0.3
2.4 ± 0.4
1.1 ± 0.4
1.2 ± 0.4
1.0 ± 0.3
1.2 ± 0.4
1.4 ± 0.4
0.7 ± 0.3
1.1 ± 0.3
1.7 ± 0.4
1.9 ± 0.4
< 0.3
2.3 ± 0.4
0.7 ± 0.3
4.1 ± 0.4
Analyzed
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-28
2015-12-29
2015-12-29
2015-12-29
2015-12-28
2015-12-29
2015-12-29
2015-12-29
2015-12-28
2015-12-29
2015-12-28
2.9 ± 0.4
1.3 ± 0.3
1.4 ± 0.3
< 0.3
1.3 ± 0.3
1.7 ± 0.3
0.8 ± 0.3
0.6 ± 0.3
1.0 ± 0.4
1.2 ± 0.4
1.2 ± 0.4
< 0.3
< 0.3
0.9 ± 0.3
1.8 ± 0.4
2015-12-28
2015-12-28
2015-12-28
2015-12-28
2015-12-28
2015-12-28
2015-12-28
2015-12-28
2015-12-29
2015-12-29
2015-12-29
2015-12-28
2015-12-28
2015-12-29
2015-12-29
Air Chek, Inc. 1936 Butler Bridge Rd, Mills River, NC 28759-3892 Phone: (828) 684-0893 Fax: (828) 684-8498
January
12, ** LABORATORY ANALYSIS
REPORT **
2016
Radon test result report for:
MONTGOMERY KNOLL ES
MAIN
Kit #
7713386
7713384
7713412
7713399
7713387
7713426
7713342
7713345
7713359
7713357
7713355
7713362
Room Id
194
196
202
BSM
CAFE
CAFE
MAIN OFFICE
MAIN OFFICE
MEDIA 1
MEDIA 2
MEDIA 2
PEP
Started
@
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 12:00 pm
2015-12-21 @ 2:00 pm
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 11:00 am
2015-12-21 @ 12:00 pm
Ended
@
2015-12-24 @ 10:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 10:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
2015-12-24 @ 9:00 am
pCi/L
0.7 ± 0.3
0.9 ± 0.3
1.1 ± 0.3
1.4 ± 0.3
1.3 ± 0.4
1.9 ± 0.4
2.1 ± 0.4
1.9 ± 0.4
3.3 ± 0.5
5.0 ± 0.6
1.6 ± 0.4
Analyzed
2015-12-29
2015-12-29
2015-12-28
2015-12-28
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
2015-12-29
Air Chek, Inc. 1936 Butler Bridge Rd, Mills River, NC 28759-3892 Phone: (828) 684-0893 Fax: (828) 684-8498
January
12, ** LABORATORY ANALYSIS
REPORT **
2016
Radon test result report for:
MONTGOMERY KNOLL ES
MAIN (MONTGOMERY KNOLL)
Kit #
Room Id
Started
Ended
7713425 170C (MONT KNOLL 2015-12-21 @ 2:00 pm 2015-12-24 @ 9:00 am
7713405 170D (MONT KNOLL 2015-12-21 @ 2:00 pm 2015-12-24 @ 9:00 am
pCi/L
1.0 ± 0.3
0.5 ± 0.3
Analyzed
2015-12-28
2015-12-28
Air Chek, Inc. 1936 Butler Bridge Rd, Mills River, NC 28759-3892 Phone: (828) 684-0893 Fax: (828) 684-8498
December
29, ** LABORATORY ANALYSIS
REPORT **
2015
Radon test result report for:
TRANSIT DEC 14 2015
NONE
Kit #
7704395
7706508
7706510
7706511
7706505
7704371
7706506
7704381
7704399
7704390
7704396
7704364
7704370
7704368
7706524
7706526
7706518
7706516
Room Id
TRANSIT 1
TRANSIT 10
TRANSIT 11
TRANSIT 12
TRANSIT 13
TRANSIT 14
TRANSIT 15
TRANSIT 16
TRANSIT 17
TRANSIT 18
TRANSIT 2
TRANSIT 3
TRANSIT 4
TRANSIT 5
TRANSIT 6
TRANSIT 7
TRANSIT 8
TRANSIT 9
Started
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
2015-12-13 @ 10:00 am
Ended
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
2015-12-15 @ 10:00 am
pCi/L
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
Analyzed
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
2015-12-16
Air Chek, Inc. 1936 Butler Bridge Rd, Mills River, NC 28759-3892 Phone: (828) 684-0893 Fax: (828) 684-8498
December
23, ** LABORATORY ANALYSIS
REPORT **
2015
Spike Sample Laboratory Results
Radon test result report for:
MCPS
Kit #
7706380
7706381
7706208
7705132
7706366
7706211
Room Id
101
102
103
104
105
106
Started
2015-12-18 @ 9:00 am
2015-12-18 @ 9:00 am
2015-12-18 @ 9:00 am
2015-12-18 @ 9:00 am
2015-12-18 @ 9:00 am
2015-12-18 @ 9:00 am
Ended
2015-12-21 @ 9:00 am
2015-12-21 @ 9:00 am
2015-12-21 @ 9:00 am
2015-12-21 @ 9:00 am
2015-12-21 @ 9:00 am
2015-12-21 @ 9:00 am
pCi/L
25.2
26.5
27.7
28.6
26.5
26.1
Analyzed
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
Air Chek, Inc. 1936 Butler Bridge Rd, Mills River, NC 28759-3892 Phone: (828) 684-0893 Fax: (828) 684-8498
Note: Spike samples are test canisters that are deliberately exposed to a controlled high level of radon in a laboratory.
They provide a quality control measure in the testing process and do NOT reflect radon levels in the building being
tested.
M. A. CECIL & ASSOCIATES, INC.
4475 Shannon Way, Port Republic, Maryland 20676 (301) 855-7710
INDUSTRIAL HYGIENE AND ENVIRONMENTAL HEALTH
MCPS RADON TESTING
Executive Summary
Name of Facility
Date of Test report
Round of Testing
Montgomery Knolls Elementary
November 19, 2015
Initial
Number of rooms tested
Number of room >/= 4.0
12
0
Low value
1.1
High value
3.2
M. A. CECIL & ASSOCIATES, INC.
4475 Shannon Way, Port Republic, Maryland 20676 (301) 855-7710
INDUSTRIAL HYGIENE AND ENVIRONMENTAL HEALTH
November 19, 2015
Mr. Sean Yarup
Montgomery County Public Schools
16651 Crabbs Branch Way
Rockville, Maryland 20855
Re: Radon Evaluation - Montgomery Knolls Elementary School
Dear Mr. Yarup:
Environmental radon testing has been completed in the new wing of Montgomery Knolls
Elementary School.
Twelve charcoal canisters were placed in various rooms in the new wing. The canisters were
placed on November 6, 2015 and retrieved on November 9, 2015. The detected radon
concentrations were below the EPA recommended level of 4.0 pico curries per liter (pCi/l) of air
with one exception. The canister placed in the cafeteria was missing on the canister retrieval
date. Test locations and results are summarized in the table below.
Location
Cafeteria
Gym
Music Room
Staff Lounge A
Staff Lounge B (Quality control)
Room 138
Room 140
Room 143
Room 144
Room 146
Room 147
Room 150
Detected Radon Concentration (pCi/l)
*
3.2
2.4
1.1
1.2
2.2
1.9
3.1
2.1
2.0
1.6
2.8
Should you have any questions concerning this report please do not hesitate to contact us.
Sincerely,
Michael A. Cecil
Michael A. Cecil, CIH
A.B.E. Radiation Measurements Laboratory
Division of Health Physics Associates, Inc.
1005 Old 22
PO Box 214
Lenhartsville, PA 19534
[email protected]
(610) 756-4153 (Voice)
(610) 756-0042 (FAX)
November 18, 2015
MA Cecil & Associates, Inc.
4475 Shannon Way
Port Republic, MD 20676
Attn: Kimberly Tayman
re: Radon Sampling, Montgomery Knolls Elementary School,
807 Daleview Dr., Silver Spring, MD 20901.
Dates of tests: November 6 to 9, 2015
Chamber Spikes: 3.5 % Deviation; August 11 to 13, 2015
Dear Ms. Tayman:
The following is a report of the radon sampling your company conducted at the referenced
property using activated charcoal. The charcoal analysis procedures have passed the US EPA's
Radon Measurement Proficiency Testing program, and A.B.E. Radiation Measurements Lab is
certified by the PA DEP as a laboratory (certification number 0048). The table lists each sample
location and the net radon levels in picocuries per liter (pCi/l). Screening testing should be
conducted under "closed house" conditions; however, A.B.E. Radiation Measurements Laboratory
has no control over how the test device is treated in our absence or the degree of ventilation at the
property over the course of the test.
Canister
Number
*172710
172720
172714
172738
172711
172713
172708
172753
168940
172783
172788
172715
Location
Start
Time
End
Time
pCi/l
Cafeteria
Music Room
Room 138
Room 140
Room 144
Room 146
Room 150
Room 143
Room 147
Gym
Staff Lounge A
Staff Lounge B
17:55
17:56
17:57
17:58
17:59
17:59
18:01
18:01
18:02
18:05
18:07
18:07
N/A
06:06
06:07
06:07
06:08
06:09
06:11
06:10
06:12
06:14
06:16
06:16
N/A
2.4
2.2
1.9
2.1
2.0
2.8
3.1
1.6
3.2
1.1
1.2
*Canister missing at pick up.
MA Cecil & Associates, Inc.
Montgomery Knolls Elementary School
Test Dates: November 6 to 9, 2015
Page 2
CONCLUSIONS
The radon concentrations measured during the test were below the US EPA screening guideline of
less than 4.0 pCi/l and remedial action to reduce the radon concentration is not indicated based on
the results of this test. Because of the variability of radon air concentrations over the course of a
year, follow-up biannual testing during a different season, under occupied conditions, is
recommended to better estimate the annual average air concentrations.
The results of this test are valid only for the date, time and conditions under which the test was
conducted and only for the client ordering the test.
Should you wish to discuss this report, please do not hesitate to contact us at (610) 756-4153.
Thank you for the opportunity to serve you.
Sincerely,
A. LaMastra
President