Asbestos Closeout Report_Bldg-2474.pdf
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This is an Asbestos Air Monitoring Close-Out Report documenting the completion of asbestos abatement activities at Building 2474, Fort Bliss, Texas.
ENCON International, Inc. conducted asbestos removal work from October 22-23, 2009, under project number 117-09-029 for the Department of Public Works (DPW) at Fort Bliss. The abatement involved the removal of approximately 315 square feet of 12" x 12" black floor tile and mastic from the basement of Building 2474. Air monitoring was performed in three phases: baseline sampling on October 21, 2009; ambient air monitoring during removal activities on October 22, 2009; and clearance sampling on October 23, 2009. All clearance air samples indicated airborne asbestos fibers below the EPA Clean Air Standard of 0.01 fibers per cubic centimeter (f/cc) using Phase Contrast Microscopy by NIOSH 7400 Method. Specifically, clearance sampling results showed 0.001 f/cc, 0.000 f/cc, and 0.000 f/cc at the three monitoring locations (East Doorway, North-center Wall, and West Doorway), all reporting as less than 0.005 f/cc under the limit of quantification. Area sampling during abatement activities on October 22-23, 2009 demonstrated effective containment, with most samples below quantification limits. Monometer readings documented negative pressure containment ranging from -0.032 to -0.054 inches of water column throughout work activities. The project was completed and cleared by October 23, 2009, with the report prepared by ENCON International on October 27, 2009.
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El Paso Office: 7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Fax 915-581-2049 Phone 915-833-3740
Engineering, Environmental & Technical Services
ASBESTOS AIR MONITORING CLOSE-OUT REPORT
BUILDING 2474
FORT BLISS, TEXAS 79916
Prepared for:
Mr. Henry Wilson, P.E.
DPW
Building 777
Fort Bliss, Texas 79916
Prepared by:
ENCON International, Inc.
7307 Remcon Circle, Suite 103
El Paso, Texas 79912
Date of Completion:
October 23, 2009
ENCON Project No. 117-09-029
E
N C O N INTERNATIONAL, INC.
October 27, 2009
Mr. Henry Wilson, P.E. Phone: (915) 568-2300
Asbestos & Lead Manager Via email: Henry.C.Wilson@us.army.mil
DPW, Bldg. 777
Fort Bliss, TX 79916
RE: ASBESTOS AIR MONITORING CLEARANCE LETTER
Building 2474
Fort Bliss, TX 79916
Dear Mr. Wilson, ENCON presents the air monitoring results for the abatement activities at Building 2474, Fort
Bliss, TX, 79916.
The abatement began on October 22, 2009 and ended October 23, 2009.
The work consisted of the removal of approximately 315 square feet of 12” x 12” black floor tile and mastic located in the basement of building 2474. A visual inspection was performed prior to clearance air sampling. In addition to the clearance sampling performed on October 23, 2009, ambient air monitoring was conducted inside and outside of the containment during removal activities. All Clearance air samples indicated airborne fibers below EPA Clean Air Standard of
0.01 fibers per cubic centimeter by Phase Contrast Microscopy by NIOSH 7400 Method.
For additional information regarding this project please contact the Asbestos Project Manager listed below.
Sampling Reviewed by:
performed by:
Leah A. Porras Alicia Orrantia
Air Monitor Technician Project Manager
Attachments:
Air Sampling Results
Air Sample Location Drawing
Air Monitoring Chains of Custody
Project Manager Daily Logs
Monometer Readings
Phase Contrast Microscopy Report
Project #: 117-09-029 Sample Type: Clearances
Building #: 2474 Sample Date: 10/23/09
Client Lab Location Fibers Flow Rate Total Time Results
Reporting
Results
Sample No. Sample No. (liters/min) (minutes) (f/cc) *(f/cc)
117.09.029.2474.1023.C1 2028 East Doorway 2.0 9.5 135 0.001 <0.005
117.09.029.2474.1023.C2 2029 North-center Wall 0.0 9.5 135 0.000 <0.005
117.09.029.2474.1023.C3 2030 West Doorway 0.5 9.5 135 0.000 <0.005
117.09.029.2474.1023.FB1 2033 Field Blank 1 0.0 - - - -
117.09.029.2474.1023.FB2 2034 Field Blank 2 0.0 - - - -
*Limit Of Quantification: 0.005 f/cc
Analyst's signature: Date: 10/23/09
Analyzed by Analytical Method NIOSH 7400; Counting Rules "A"
95% Confidence Level
TDH Asbestos PCM Laboratory License #300385
7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Phone 915-833-3740 Fax 915-581-2049
El Paso Office: 7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Fax 915-581-2049 Phone 915-833-3740
CHAIN OF CUSTODY
Project #: 117-09-029
Building#: 2474
Date: 10-23-09 Sample Type: Clearances
Sample ID Pump Time
On
Flow
Rate
Time
Off
Flow
Rate
Total
Time
Avg.
Flow
Volume Location
117.09.029.2474.1023.C1 5 9:15a 9.5 11:30a 9.5 135 9.5 1282.5 East Doorway
117.09.029.2474.1023.C2 9 9:15a 9.5 11:30a 9.5 135 9.5 1282.5 North-center Wall
117.09.029.2474.1023.C3 1 9:15a 9.5 11:30a 9.5 135 9.5 1282.5 West Doorway
117.09.029.2474.1023.FB1 NA - - - - - - - Field Blank 1
117.09.029.2474.1023.FB2 NA - - - - - - - Field Blank 2
Client: DPW, Building 777 Fort Bliss, Texas 79916
Contractor: KEERS Environmental
Logged in by: Leah A. Porras
E N C O N INTERNATIONAL, INC.
ENCON International, Inc.
Air Sample Locations
ENCON #: 117-09-029
Date: 10/27/09 N.T.S
Bldg. 2474
Basement
Air Sample Location Drawing
A = Area Samples
B = Baseline Samples
C=Clearances Samples
U p
U p
B3
B2
B1
A3
A2
A1
A5
*Please Note: A4 is at the 1 st Floor Stairway Entrance
C3
C2
C1
Project #: 117-09-029 Sample Type: Baselines
Building #: 2474 Sample Date: 10/21/09
Client Lab Location Fibers Flow Rate Total Time Results
Reporting
Results
Sample No. Sample No. (liters/min) (minutes) (f/cc) *(f/cc)
117.09.029.2474.1021.B1 2035 East Doorway 3.0 7 180 0.001 <0.005
117.09.029.2474.1021.B2 2036 North-center Wall 0.0 7 180 0.000 <0.005
117.09.029.2474.1021.B3 2037 West Doorway 5.5 7 180 0.002 <0.005
117.09.029.2474.1021.FB1 2038 Field Blank 1 0.0 - - - -
117.09.029.2474.1021.FB2 2039 Field Blank 2 0.0 - - - -
*Limit Of Quantification: 0.005 f/cc
Analyst's signature: Date: 10/26/09
Analyzed by Analytical Method NIOSH 7400; Counting Rules "A"
El Paso Office: 7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Fax 915-581-2049 Phone 915-833-3740
Date: 10-21-09 Sample Type: Baselines
Flow
Rate
Time
Off
Flow
Rate
Total
Time
Avg.
Flow
Volume Location
117.09.029.2474.1021.B1 3 1:15p 7.0 4:15p 7.0 180 7.0 1260.0 East Doorway
117.09.029.2474.1021.B2 5 1:15p 7.0 4:15p 7.0 180 7.0 1260.0 North-center Wall
117.09.029.2474.1021.B3 8 1:17p 7.0 4:17p 7.0 180 7.0 1260.0 West Doorway
117.09.029.2474.1021.FB1 NA - - - - - - - Field Blank 1
117.09.029.2474.1021.FB2 NA - - - - - - - Field Blank 2
Project #: 117-09-029 Sample Type: Areas
Building #: 2474 Sample Date: 10/22/09
Client Lab Location Fibers Flow Rate Total Time Results
Reporting
Results
Sample No. Sample No. (liters/min) (minutes) (f/cc) *(f/cc)
117.09.029.2474.1022.A1 2040 I/C North-center Wall 8.0 4 215 0.005 <0.005
117.09.029.2474.1022.A2 2041 I/C East Doorway 11.5 4 215 0.007 0.007
117.09.029.2474.1022.A3 2042 Make up air 2.0 4 214 0.001 <0.005
117.09.029.2474.1022.A4 2043 1st Floor Stairwell Entrance 3.0 4 215 0.002 <0.005
117.09.029.2474.1022.A5 2044 Exhaust 0.0 4 215 0.000 <0.005
117.09.029.2474.1022.FB1 2045 Field Blank 1 0.0 - - - -
117.09.029.2474.1022.FB2 2046 Field Blank 2 0.0 - - - -
*Limit Of Quantification: 0.005 f/cc
*I/C: Inside Containment
Analyst's signature: Date: 10/26/09
Analyzed by Analytical Method NIOSH 7400; Counting Rules "A"
El Paso Office: 7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Fax 915-581-2049 Phone 915-833-3740
Date: 10-22-09 Sample Type: Areas
Flow
Rate
Time
Off
Flow
Rate
Total
Time
Avg.
Flow
Volume Location
117.09.029.2474.1022.A1 5 12:05p 4.0 3:40p 4.0 215 4.0 860.0 I/C North-center Wall
117.09.029.2474.1022.A2 9 12:05p 4.0 3:40p 4.0 215 4.0 860.0 I/C East Doorway
117.09.029.2474.1022.A3 1 12:08p 4.0 3:42p 4.0 214 4.0 856.0 Make Up Air
117.09.029.2474.1022.A4 3 12:10p 4.0 3:45p 4.0 215 4.0 860.0 1 st Floor Stairwell Entrance
117.09.029.2474.1022.A5 8 12:15p 4.0 3:50p 4.0 215 4.0 860.0 Exhaust
117.09.029.2474.1022.FB1 NA - - - - - - - Field Blank 1
117.09.029.2474.1022.FB2 NA - - - - - - - Field Blank 2
*I/C: Inside Containment
Project #: 117-09-029 Sample Type: Areas
Building #: 2474 Sample Date: 10/23/09
Client Lab Location Fibers Flow Rate Total Time Results
Reporting
Results
Sample No. Sample No. (liters/min) (minutes) (f/cc) *(f/cc)
117.09.029.2474.1023.A1 2047 I/C North-center Wall 3.0 4 95 0.004 <0.005
117.09.029.2474.1023.A2 2048 I/C East Doorway 6.0 4 97 0.008 0.008
117.09.029.2474.1023.A3 2049 Make up air 3.5 4 95 0.005 <0.005
117.09.029.2474.1023.A4 2050 1st Floor Stairwell Entrance 0.0 4 97 0.000 <0.005
117.09.029.2474.1023.A5 2051 Exhaust 0.0 4 95 0.000 <0.005
117.09.029.2474.1023.FB1 2033 Field Blank 1 0.0 - - - -
117.09.029.2474.1023.FB2 2034 Field Blank 2 0.0 - - - -
*Limit Of Quantification: 0.005 f/cc
*I/C: Inside Containment
Analyst's signature: Date: 10/26/09
Analyzed by Analytical Method NIOSH 7400; Counting Rules "A"
El Paso Office: 7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Fax 915-581-2049 Phone 915-833-3740
Date: 10-23-09 Sample Type: Areas
Flow
Rate
Time
Off
Flow
Rate
Total
Time
Avg.
Flow
Volume Location
117.09.029.2474.1023.A1 5 7:05a 4.0 8:40a 4.0 95 4.0 380.0 I/C North-center Wall
117.09.029.2474.1023.A2 9 7:05a 4.0 8:42a 4.0 97 4.0 388.0 I/C East Doorway
117.09.029.2474.1023.A3 1 7:10a 4.0 8:45a 4.0 95 4.0 380.0 Make Up Air
117.09.029.2474.1023.A4 3 7:13a 4.0 8:50a 4.0 97 4.0 388.0 1 st Floor Stairwell Entrance
117.09.029.2474.1023.A5 8 7:20a 4.0 8:55a 4.0 95 4.0 380.0 Exhaust
117.09.029.2474.1023.FB1 NA - - - - - - - Field Blank 1
117.09.029.2474.1023.FB2 NA - - - - - - - Field Blank 2
*I/C: Inside Containment
El Paso Office: 7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Fax 915-581-2049 Phone 915-833-3740
DAILY LOG SHEET
11:30a – Arrive to job site; building is unoccupied but there are subcontract workers doing a variety of work throughout the upper levels
11:50a-I locate the area where the abatement will take place and begin to unload sampling equipment
12:30p-1:00p Lunch break
1:00p- I set and calibrate all high volume pumps for baseline sampling
1:15p-Pumps are turned on
2:30p-I check on all pumps
3:00p-There is no traffic down in the basement where air sampling is being conducted
4:15p-I turn off all pumps and collect all samples
4:30p-I leave job site
Project Manager Signature:___________________________
N C O N
Project #: 117-09-029 Date: 10-21-09 Day: 1
Building #: 2474
Material/Location: 12” x 12” Black Floor Tile / Basement Office
Point of Contact: Osvaldo Arroyo
Baselines: X Areas: Personnels: Clearances: Other:
INTERNATIONAL, INC.
El Paso Office: 7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Fax 915-581-2049 Phone 915-833-3740
7:00a-KEERS and I arrive to job site
-The office that’s going to be abated contains furniture items such as: a refrigerator, sofa, a few desks, chairs, cabinets, and a microwave
7:30a-KEERS continues to move out all furniture
8:15a-KEERS begins to prepare room by placing critical barriers over windows and doors
9:00a-Ruben Kato of KEERS arrives to job site to assist in the preparation process
-I begin to unload and set up all high volume pumps for ambient air sampling
10:30a-Prep continues; all pumps are calibrated, set, and ready for sampling
11:00a-Crew takes lunch break and Ruben Kato leaves job site
12:00p-Crew returns from lunch and begins to suit up; I turn on all pumps
12:30p-Crew is removing floor tile; Mr. Alberto Gonzalez of ENCON arrives to job site
1:15p-I check on all pumps
2:15p-Mr. Henry Wilson and Mr. Jesse Schaffer arrive to job site to observe work activity
2:40p-Bag out procedure commences thru decon; up the stairs and out the north entrance of bldg
3:20p-Crew begins decontamination so they can exit containment
3:40p-I begin to collect all samples
4:00p-Leave job site
KEERS Crew Members: Raymond Padilla
KEERS Supervisor: Osvaldo Arroyo
Project #: 117-09-029 Date: 10-22-09 Day: 2
Building #: 2474
Material/Location: 12” x 12” Black Floor Tile / Basement Office
Point of Contact: Osvaldo Arroyo
Baselines: Areas: X Personnels: Clearances: Other:
El Paso Office: 7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Fax 915-581-2049 Phone 915-833-3740
7:00a-KEERS and I arrive to job site; crew suits up; I turn on all pumps
-Crew begins by detail cleaning entire floor
8:00a-I check all pumps
8:35a-I perform a visual inspection of containment
9:00a-Visual inspection has passed and I have turned off all pumps
-I recalibrate and set three high volume pumps to start clearance sampling
9:15a-Pumps are turned and Mr. Alberto Gonzalez arrives to job site
10:25a-I check on all pumps
11:30a-I turned off all pumps and collected all samples
12:30p-Osvaldo receives a verbal of clearance so he begins to tear down
1:00p-A final visual inspection is performed and passes
1:15p-Crew leaves job site
1:30p-I collect all equipment and begin air monitoring report
3:30p-I leave job site
KEERS Crew Members: Raymond Padilla
KEERS Supervisor: Osvaldo Arroyo
Project #: 117-09-029 Date: 10-23-09 Day: 3
Building #: 2474
Material/Location: 12” x 12” Black Floor Tile / Basement Office
Point of Contact: Osvaldo Arroyo
Baselines: Areas: X Personnels: Clearances: X Other:
El Paso Office: 7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Fax 915-581-2049 Phone 915-833-3740
Engineering, Environmental & Construction Services
MONOMETER READING
Project Number: 117-09-029 Building Number: 2474 Date: 10-22-09
Time
Reading
Reader’s Initials
Comments
6:00am-7:00am
7:00am-8:00am
8:00am-9:00am
9:00am-10:00am
10:00am-11:00am
11:00am-12:00pm
12:00pm-1:00pm -0.042
1:00pm-2:00pm -0.035
2:00pm-3:00pm -0.054
3:00pm-4:00pm -0.048
4:00pm-5:00pm
5:00pm-6:00pm
6:00pm-7:00pm
El Paso Office: 7307 Remcon Circle, Suite 103 El Paso, Texas 79912 Fax 915-581-2049 Phone 915-833-3740
Engineering, Environmental & Construction Services
MONOMETER READING
Project Number: 117-09-029 Building Number: 2474 Date: 10-23-09
Time
Reading
Reader’s Initials
Comments
6:00am-7:00am
7:00am-8:00am -0.032
8:00am-9:00am -0.041
9:00am-10:00am -0.034
10:00am-11:00am -0.039
11:00am-12:00pm -0.035
12:00pm-1:00pm
1:00pm-2:00pm
2:00pm-3:00pm
3:00pm-4:00pm
4:00pm-5:00pm
5:00pm-6:00pm
6:00pm-7:00pm
| bldg 2474 coc 102109B |
| bldg 2474 coc 102209A |
| bldg 2474 coc 102309A |
| bldg 2474 coc 102309C |
| bldg 2474 daily log 2 |
| bldg 2474 daily log 3 |
| bldg 2474 drwg |
| bldg 2474 drwg.vsd |
| Page-1 |
| bldg 2474 lab rslt |
| bldg 2474 mono 102209 |
| bldg 2474 mono 102309 |
| bldg 2474 clearance letter.pdf |
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