Document v1MR3R0p5G8K0VJGGmnwY9eMb
/
~grWEST'PAlNE tfyfyJaAouztenieA wc.
7979 GSRI AVE. BATON ROUGE, LA 70820
N
ASBESTOS FIBER COUNT ANALYSIS
FOR
DOW CHEMICAL Industrial Hygiene Bldg. 3502
Post Office Box 150 Plaquemine, LA 70764
W
ATTENTION: Ms. Darlene Creel
March 16, 1992
klb
20-2164 DO A U4620
CONFIDENTIAL
A Member of the Inchcape Environmental Group
March 16, 1992
Four (4) filter cassette samples were received on January 30,
1992 from Dow Chemical for fiber count. Fibers larger than 5
microns in length were counted by means of phase-contrast
microscopy at a magnification of 400X. The procedure recommended
by NIOSH method 7400A was followed.
Pertinent information
regarding fiber counts is as follows:
Field Area: 0.00785 mm2 (Walton Beckett Graticule)
Effective Collecting Area:
385 mm2 (25 mm Cassette)
855 mm2 (37 mm Cassette)
Limit of Quanititation:
10 fibers/100 fields
Limit of Detection: > Average Blank Count
@ Detection limits are based upon a minimal concentration of 7
fibers/mm2.
Sample I.D.
Fibers (>5um) Observed
No. of Fields Observed
Fibers per
Filter
Volume of
Air (L)
Fibers (>5um) per c.c. of Air
Glycol 11 13920 Chlorine: 13921 Blank #1 Blank #2
1
0 0 0
100
100 100 100
490
---------
---------
<490 <490 <490
-------------------------
-------------------------
20-2164
V.
Philip W. West, Ph.D. Laboratory Director
A Member of the Inchcape Environmental Group
DO A 114621 CONFIDENTIAL
WEST PAINE LABORATORIES INC. 7979 GSR1 AVE. BATON ROUGE, LA 70820
po * / V 9 L 11/ S?
msi # 1 5 M L[ b?
Sample l.D.:
*13^1 ^
SAMPLE COLLECTION:
CHAIN-OF-CUSTODY RECORD
Collector's Name: Dariene S. CreelTelephone: f5Q4) 389-6181
Company Name: Dow Chemical (Industrial Hygiene Bldg. 3502W)
Address: P.O. Box 150. Plaouemine. Louisiana 70765-0500
Date Sampled: 3 - H ^1 D-Time:
Type of Process or Facility Sampled: Fiber count via NIOSH 7400
Field Information: Filter cassettes for fiber per filters
*1^0* 133X1 -
*
/a
L.
SAMPLE SHIPPING (other than transportation by collector):
Transporter's Name:_
3_______ Date:. ~ \\
Company Name: West Paine Courier
s miMTimr iw
Address:_________ ___________________ SAMPLE RECEIVING:
Person accepting sample.
j\i
Date: -3/// //%~
11 ~77fj5'
.Time:
Company Name: WEST-PAINE LABORATORIES. INC.
Address: 7979 GSRIAVENUE. BATON ROUGE. LOUISIANA 70820 PHONE:(5Q41769^900
Sample DispositionStorageFurther TransportationOther.
CHAIN-OF-POSSESSION: (Attach additional sheets as needed to show continuity)
TERMINATION OF CHAIN OF CUSTODY:
Authorized by:____
.Date:Time:,
Company/Name:__
.Address:__________________________
00 A 11462? CONFIDENTIAL