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: Thomas Edison High School of Technology
Date of Test Report:
Round of Testing:
# Rooms Tested:
# Rooms ≥ 4.0 pCi/L:
Low Value:
High Value:
1/25/2016
Initial
Follow-up
Post Remediation
57
0
< 0.3
3.0
Project Status:
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
January 25, 2016
Mr. Richard Cox
Indoor Air Quality Team Leader
Montgomery County Public Schools
850 Hungerford Drive
Rockville, MD 20850
Re:
Radon Testing Services
KCI Job # 12146341.21
Location:
Thomas Edison High School of Technology
12501 Dalewood Drive
Silver Spring, MD 20906
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 Thomas Edison High
School of Technology, located at 12501 Dalewood Drive in Silver Spring, Maryland 20906 (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 28, 2015 and deployed sixty-nine (69) 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 31, 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
January 25, 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
≥4.0 piC/L
<4.0 piC/L
Room
none
Result
n/a
See Attachment B
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
January 25, 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 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
Thomas Edison High School Of Technology
Test Period: 12/28/15-12/31/15
Kit Number
7709906
7709911
7709912
7709905
7709901
7709941
7709944
7709947
7709948
7709957
7709956
7709959
7709914
7709915
7709916
7709922
7709925
7709926
7709928
7709917
7709918
7709937
7709932
7709933
7709936
7709935
7709938
7709939
7709940
7709962
7709965
7709960
7709967
7709908
7709909
7709910
7709913
7709903
7709904
7709942
7709943
7709945
7709946
7709951
7709949
7709952
Table Note:
* Missing or Compromised Sample
Room / Area
1101
1102
1102
1103
1104
1105
1109
1111
1116
1117
1118
1119
1120
1120
1120
1122
1124
1126
1126
1127
1127
1134
1135
1135
1136
1137
1138
1139
1140
2206
2208
2215
2222
1101B
1101C
1101D
1102A
1104A
1104B
1105A
1105B
1109A
1109B
1110B
1116A
1116C
Result
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
0.8
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
1
< 0.3
0.6
0.8
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
2
< 0.3
0.6
< 0.3
3
< 0.3
0.8
1.3
< 0.3
< 0.3
< 0.3
< 0.3
0.8
1.1
< 0.3
< 0.3
< 0.3
< 0.3
Radon Testing Results
Thomas Edison High School Of Technology
Test Period: 12/28/15-12/31/15
Kit Number
7709953
7709954
7709955
7709958
7709920
7709927
7709929
7709930
7709919
7709934
7709961
Table Note:
* Missing or Compromised Sample
*
Room / Area
1116D
1116E
1116F
1117B
1120B
1126A
1126C
1126D
1127B
1135C
2215 (Open Fan)
Result
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
0.6
1
0.6
< 0.3
< 0.3
< 0.3
Radon Testing Results
Thomas Edison High School Of Technology
Test Period: 12/28/15-12/31/15
Kit Number
7709902
7709968
7709950
7709921
7709923
7709931
7709963
7709966
7709907
7709924
7709964
7710048
Table Note:
* Missing or Compromised Sample
QC Type
D (1104)
D (1105)
D (1116A)
D (1120B)
D (1122)
D (1126A)
D (2206)
D (2208)
FB (1101)
FB (1122)
FB (2206)
OB (0)
Result
< 0.3
< 0.3
< 0.3
< 0.3
1.4
0.8
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
ATTACHMENT C
Laboratory Analytical Results
January
16, ** LABORATORY ANALYSIS
REPORT **
2016
Radon test result report for:
THOMAS EDISON HS OF TECHNOLOGY
MAIN
Kit #
7710048
7709906
7709907
7709909
7709910
7709911
7709912
7709913
7709905
7709901
7709902
7709903
7709904
7709941
7709968
7709942
7709943
7709944
7709945
7709946
7709951
7709947
7709948
7709950
7709949
7709952
7709953
7709954
7709955
7709957
7709958
7709956
7709959
7709915
7709914
7709916
7709921
Room Id
0
1101
1101
1101C
1101D
1102
1102
1102A
1103
1104
1104
1104A
1104B
1105
1105
1105A
1105B
1109
1109A
1109B
1110B
1111
1116
1116A
1116A
1116C
1116D
1116E
1116F
1117
1117B
1118
1119
1120
1120
1120
1120B
Started
2015-12-28 @ 2:00 pm
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 11:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 11:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 11:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
Ended
2015-12-31 @ 11:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
pCi/L
< 0.3
< 0.3
< 0.3
0.8 ± 0.4
1.3 ± 0.4
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
0.8 ± 0.4
< 0.3
1.1 ± 0.3
< 0.3
< 0.3
0.8 ± 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
2016-01-04
2016-01-04
2016-01-04
2016-01-05
2016-01-05
2016-01-05
2016-01-05
2016-01-04
2016-01-04
2016-01-04
2016-01-05
2016-01-04
2016-01-04
2016-01-04
2016-01-05
2016-01-05
2016-01-05
2016-01-05
2016-01-04
2016-01-04
2016-01-05
2016-01-04
2016-01-04
2016-01-04
2016-01-05
2016-01-04
2016-01-04
2016-01-05
2016-01-04
2016-01-05
2016-01-04
2016-01-05
2016-01-05
2016-01-04
2016-01-05
2016-01-05
2016-01-04
Air Chek, Inc. 1936 Butler Bridge Rd, Mills River, NC 28759-3892 Phone: (828) 684-0893 Fax: (828) 684-8498
January
16, ** LABORATORY ANALYSIS
REPORT **
2016
Radon test result report for:
THOMAS EDISON HS OF TECHNOLOGY
MAIN
Kit #
7709920
7709922
7709923
7709924
7709925
7709926
7709928
7709927
7709931
7709929
7709930
7709917
7709918
7709919
7709937
7709932
7709933
7709934
7709936
7709935
7709938
7709939
7709940
7709963
7709964
7709962
7709965
7709966
7709961
7709960
7709967
Room Id
1120B
1122
1122
1122
1124
1126
1126
1126A
1126A
1126C
1126D
1127
1127
1127B
1134
1135
1135
1135C
1136
1137
1138
1139
1140
2206
2206
2206
2208
2208
2215
2215
2222
Started
2015-12-28 @ 9:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 9:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 10:00 am
2015-12-28 @ 11:00 am
2015-12-28 @ 11:00 am
2015-12-28 @ 11:00 am
2015-12-28 @ 11:00 am
2015-12-28 @ 11:00 am
2015-12-28 @ 11:00 am
2015-12-28 @ 11:00 am
2015-12-28 @ 11:00 am
Ended
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 8:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
2015-12-31 @ 9:00 am
pCi/L
< 0.3
1.0 ± 0.3
1.4 ± 0.4
< 0.3
< 0.3
0.6 ± 0.3
0.8 ± 0.4
0.6 ± 0.4
0.8 ± 0.4
1.0 ± 0.3
0.6 ± 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
< 0.3
2.0 ± 0.4
< 0.3
< 0.3
< 0.3
0.6 ± 0.3
< 0.3
< 0.3
< 0.3
3.0 ± 0.5
Analyzed
2016-01-05
2016-01-04
2016-01-05
2016-01-05
2016-01-04
2016-01-04
2016-01-05
2016-01-05
2016-01-05
2016-01-04
2016-01-05
2016-01-04
2016-01-05
2016-01-04
2016-01-05
2016-01-04
2016-01-05
2016-01-05
2016-01-05
2016-01-05
2016-01-05
2016-01-05
2016-01-04
2016-01-04
2016-01-04
2016-01-05
2016-01-04
2016-01-04
2016-01-04
2016-01-05
2016-01-05
Air Chek, Inc. 1936 Butler Bridge Rd, Mills River, NC 28759-3892 Phone: (828) 684-0893 Fax: (828) 684-8498
January
16, ** LABORATORY ANALYSIS
REPORT **
2016
Radon test result report for:
THOMAS EDISON HS
MAIN
Kit #
7709908
Room Id
1101B
Started
2015-12-28 @ 9:00 am
Ended
2015-12-31 @ 8:00 am
pCi/L
< 0.3
Analyzed
2016-01-04
Air Chek, Inc. 1936 Butler Bridge Rd, Mills River, NC 28759-3892 Phone: (828) 684-0893 Fax: (828) 684-8498
January
15, ** LABORATORY ANALYSIS
REPORT **
2016
Radon test result report for:
MCPS PHASE 3 & 4
TRANSIT BLANKS
Kit #
7708218
7708200
7708190
7708189
7708191
7708188
7708197
7708186
7708185
7708184
7708182
7708187
7708199
7708181
7708180
7708183
7708178
7708179
7708177
7708176
7708174
7708173
7708175
7708198
7708172
7708194
7708196
7708193
7708192
7708195
Room Id
TRAMSIT 4
TRANSIT 1
TRANSIT 10
TRANSIT 11
TRANSIT 12
TRANSIT 13
TRANSIT 14
TRANSIT 15
TRANSIT 16
TRANSIT 17
TRANSIT 18
TRANSIT 18
TRANSIT 2
TRANSIT 20
TRANSIT 21
TRANSIT 22
TRANSIT 23
TRANSIT 24
TRANSIT 25
TRANSIT 26
TRANSIT 27
TRANSIT 28
TRANSIT 29
TRANSIT 3
TRANSIT 30
TRANSIT 5
TRANSIT 6
TRANSIT 7
TRANSIT 8
TRANSIT 9
Started
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
2015-12-18 @ 12:00 pm
Ended
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 @ 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 @ 12:00 pm
2015-12-21 @ 12:00 pm
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
< 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
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
2015-12-23
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
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.