1989 Urban Air Toxics Monitoring Program Aldehyde Results


    United States
    Environmental Protection
    Agency
Office of Air Quality
Planning and Standards
Research Triangle Park NC 27711
ERA-450/4-91-006
January 1991
    Air
1989 URBAN Am Toxics
  MONITORING PROGRAM
   ALDEHYDE RESULTS

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                                  EPA-450/4-91-006
1989 URBAN AIR Toxics
  MONITORING PROGRAM
    ALDEHYDE RESULTS
                  By

 Robert A. McAllister, David L. Epperson & Robert F. Jongleux
             Radian Corporation
         Research Triangle Park, NC 27709


           EPA Contract No. 68D80014


        EPA Project Officer: Neil J. Berg, Jr.


               U.S. Environmental Prtfe^:'-   "&'f
               Region 1" I'-'ary (?l-'!.2'}
               1'i West _L okson ^oi.i!c.-.'u-jl i/..t..i flijOl
               Chicago, II. 60604-3^50
      Office Of Air Quality Planning And Standards
           Office Of Air And Radiation
        U. S. Environmental Protection Agency
         Research Triangle Park, NC 27711

               January 1991

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This report has  been reviewed by the Office Of Air Quality Planning And Standards, U. S.
Environmental Protection Agency, and has been approved for publication as received from the
contractor.  Approval does not signify that the contents necessarily reflect the views and policies of the
Agency, neither  does mention of trade names or commercial products constitute endorsement or
recommendation for use.
                                     EPA-450/4-91-006

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DCN:  90-262-045-09
Radian No.  262-045-04-08
EPA No. 68D80014
                   1989 URBAN AIR TOXICS MONITORING PROGRAM
                               ALDEHYDE RESULTS
                                 FINAL REPORT
                                 Prepared for:

                               Neil  J.  Berg,  Jr.
                 Office of Air Quality Planning and Standards
                     U.S. Environmental  Protection Agency
                 Research Triangle Park,  North Carolina  27711
                                 Prepared by:

                             Robert A. McAllister
                               David L.  Epperson
                              Robert  F. Jongleux
                              Radian  Corporation
                           3200 E. Chapel Hill  Road
                                P.O.  Box 13000
                 Research Triangle  Park,  North Carolina  27709
                                 October  1990
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                      DISCLAIMER
This report was prepared for the U.S. Environmental Protection
Agency by  Radian  Corporation,  Research Triangle Park, North
Carolina,  under  contract  No.  68D80014.    The  opinions,
findings, and conclusions expressed are those of the  authors
and not necessarily those of the U.S. Environmental Protection
Agency.

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                           SYMBOLS AND ABBREVIATIONS
ABS         Absolute value
ADL         Analytical detection limit
AIRS        Atmospheric Information Retrieval System
ANOVA       Analysis of Variance
APR         April
AREAL       Atmospheric Research and Exposure Assessment Laboratory
ASCII       American -Standard Code for Information Interchange
AUG         August
BRLA        Baton Rouge, LA; AIRS No. 22-033-0004
C4IL        Chicago. IL; AIRS No. 17-031-0060
CANJ        Camden, NJ; AIRS No. 31-007-0003
cm          centimeter
CONC        concentration
COR         correlation coefficient
COV         covariance
DC          District of Columbia
DEC         December
DIF         Difference; Percent OIF - (X, -XO/UX, + X-)/2)*100
DIST        Distribution
OLTX        Dallas, TX; AIRS No. 48-113-0069
DNPH        2,4-dinitrophenyl hydrazine
EPA        , U. S. Environmental Protection Agency
FID         Flame ionization detection
FL          Florida
FLFL        Ft. Lauderdale, FL; AIRS No. 12-011-1003
GC/MS       Gas chromatograph/mass spectrometry
GC/MD       Gas chromatograph/multidetector
FEB         February
H1TX        Houston, TX; AIRS No. 48-201-1034
Hg          Mercury
HPLC        High performance liquid chromatography
ID          Radian assigned alphanumeric identification
IL          Illinois
in.         inch
JAN         January
JUL         July
JUN         June
KS          Kansas
L           Liter
LA          Louisiana
LOG         natural logarithm
MAR         March
MAX         maximum
lmo/111
m

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HIFL        Miami, FL; AIRS No. 12-025-4002
MIN         minimum-.
min.        minute (60 seconds)
ml          milIlllter
mm          millimeter
MO          Missouri
N           number of cases, or sample size
NC          North Carolina
NJ          New Jersey
nm          nanometer
NMOC        Nonmethane organic compound(s)
NORM        normal
NOV         November
NY          New York
OAQPS       Office of Air Quality Standards and Planning
OCT         October
PEFL        Pensacola, FTI; AIRS No. 12-033-0004
PIO         Photoionization detection
ppbv        parts per billion by volume
PPK         Perimeter Park, Morrisville, NC, Radian Analytical Laboratory
QA          Quality Assurance
QAPP        Quality Assurance Project Plan
QC          Quality Control
QAO         Quality Assurance Division
R           regression coefficient
RTP         Research Triangle Park, NC
S2MO        St. Louis, MO; AIRS No. 29-510-0072
SAIL        Sauget, IL; AIRS No. 17-163-1010
SEP         September
St.         Saint
STD         Standard Deviation
TX          Texas
U. S.       United States of America
U. K.       United Kingdom
UATMP       Urban Air Toxics Monitoring Program
W           Shapiro-Milk W statistic, used in SAS* software to indicate
            normality of a distribution
WEEKCLS     Classification for weekdays; 1 - Monday through Friday,
                  2 « Saturday or Sunday
W1DC        Washington, DC; AIRS No. 11-001-0025
W1KS        Wichita, KS; AIRS No. 20-173-0010
W2DC        Washington, DC; AIRS No. 11-001-0039
W2KS        Wichita, KS; AIRS No.20-173-0007
lmo/111
IV

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                                   CONTENTS

List of Figures	  vii
List of Tables	  x
1.0   Summary and Conclusions	  1-1
2.0   Introduction	  2-2
3.0   UATMP for 1989	  3-1
4.0   Sampling, Analysis, and Quality Assurance Procedures	  4-1
      4.1   Sampling Equipment and Procedures	  4-1
      4.2   Analytical Procedures	  4-3
      4.3   Quality Assurance Procedures	  4-4
      4.4   Calibration Procedure	  4-4
            4.4.1 Daily Quality Control Procedures	  4-4
            4.4.2 Duplicate Samples	  4-4
            4.4.3 Trip Blanks	  4-6
            4.4.4 Precision	  4-6
            4.4.5 Accuracy	  4-6
5.0   Results	  5-1
      5.1   Analytical Results	  5-1
      5.2   Analysis Result Statistics	  5-1
      5.3   Analytical Results Data	  5-17
6.0   Data Analysis	  6-1
      6.1   Introduction	  6-1
      6.2   Summary Statistics	  6-2
      6.3   Box Plots	  6-4
      6.4   Seasonal ity	  6-17
      6.5   Interaldehyde Correlations	  6-29
      6.6   Precision and Percent Differences	  6-34
      6.7   Audit Samples	  6-43
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7.0   Conclusions	   7-1
8.0   References	?	   8-1

      APPENDIX A - Site Information from AIRS	   A-l
      APPENDIX B - Summary Statistics for Cases 1 and 2  for All  Sites..   B-2
      APPENDIX C - Analytical Data Listing	   B-3
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                                LIST OF  FIGURES
Number                                                                   Page
 3-1        1989 UATMP Aldehyde Data Flow	   3-4
 4-1        1989 UATMP Sampling Assembly	   4-2
 4-2        Aldehyde Field Data Sheet	   4-5
 5-1        Average Aldehyde Concentration -All Sites	   5-2
 5-2        Aldehyde Concentration for Baton Rouge, LA	   5-3
 5-3        Aldehyde Concentration for Chicago,  IL	   5-4
 5-4        Aldehyde Concentration for Camden, NJ	   5-5
 5-5        Aldehyde Concentration for Dallas, TX	   5-6
 5-6        Aldehyde Concentration for Fort Lauderdale, FL	   5-7
 5-7        Aldehyde Concentration for Houston,  TX - Site 1	   5-8
 5-8        Aldehyde Concentration for Miami, FL	   5-9
 5-9        Aldehyde Concentration for Pensacola, FL	   5-10
 5-10       Aldehyde Concentration for St. Louis, MO	   5-11
 5-11       Aldehyde Concentration for Sauget, IL	   5-12
 5-12       Aldehyde Concentration for Washington, DC - Site 1	   5-13
 5-13       Aldehyde Concentration for Wichita,  KS - Site 1	   5-14
 5-14       Aldehyde Concentration for Washington, DC - Site 2	   5-15
 5-15       Aldehyde Concentration for Wichita,  KS - Site 2	   5-16
 6-1        Stem-and-Leaf Plot for All Formaldehyde Concentrations	   6-11
 6-2        Stem-and-Leaf Plot for All Acetaldehyde Concentrations	   6-12
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 6-3         Stem-and-Leaf  Plot  for All Acetone Concentrations	    6-13
 6-4         Formaldeliyde Box  Plots for Case  1	    6-14
 6-5         Acetaldehyde Box  Plots for Case  1	    6-15
 6-6         Acetone  Box Plots for Case 1	    6-16
 6-7         Formaldehyde,  Acetaldehyde,  and  Acetone Monthly
            Concentrations -  All Sites	    6-18
 6-8         Formaldehyde Concentration Monthly Variation  for  1989  for
            Selected Sites -  Group 1	    6-19
 6-9         Formaldehyde Concentration Monthly Variation  for  1989  for
            Selected Sites -  Group 2	    6-20
 6-10        Formaldehyde Concentration Monthly Variation  for  1989  for
            Selected Sites -  Group 3	    6-21
 6-11        Acetaldehyde Concentration Monthly Variation  for  1989  for
            Selected Sites -  Group 1	    6-23
 6-12        Acetaldehyde Concentration Monthly Variation  for  1989  for
            Selected Sites -  Group 2	    6-24
 6-13        Acetaldehyde Concentration Monthly Variation  for  1989  for
            Selected Sites -  Group 3	    6-25
 6-14        Acetone  Concentration Monthly Variation  for 1989  for
            Selected Sites -  Group 1	    6-26
 6-15        Acetone  Concentration Monthly Variation  for 1989  for
           • Selected Sites -  Group 2	    6-27
 6-16        Acetone  Concentration Monthly Variation  for 1989  for
            Selected Sites -  Group 3	    6-28
 6-17        Formaldehyde/Acetaldehyde Correlation	    6-32
 6-18        Formaldehyde/Acetone Correlation	    6-33
 6-19        Formaldehyde Concentration Difference as  a Function of
            Average  Concentrations	    6-37
 6-20        Formaldehyde Absolute  Percent Difference  as a Function of
            Average  Concentrations	    6-38
 6-21        Acetaldehyde Concentration Difference as  a Function of
            Average  Concentrations	    6-39
 6-22        Acetaldehyde Absolute  Percent Difference as a Function of
            Average  Concentrations	    6-40
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 6-23       Acetone Concentration Difference as a Function of
            Average Concentrations	    6-41

 6-24       Acetone Percent Difference as a Function of Average
            Concentrations	    6-42

 6-25       Quality Assurance - Audit Results	    6-45
lmo/111                               ix

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                                LIST OF TABLES


Number                                                                   Page

 2-1        UATMP Target Compounds	   2-2

 3-1        1989 Urban A1r Toxics Monitoring Program Sites	   3-2

 6-1        Probabilities for a Smaller W Statistic for Distributions
            of the Mean Concentrations and Logs of the Mean
            Concentrations	   6-3

 6-2        Summary Arithmetic and Lognormal Statistics in PPBV for
            Mean Formaldehyde Concentrations:  Case 1	   6-5

 6-3        95% Confidence Intervals in PPBV for-Mean Formaldehyde
            Concentrations:   Case 1	   6-5

 6-4        Summary Arithmetic and Lognormal Statistics in PPBV for
            Mean Formaldehyde Concentrations:  Case 2	   6-6

 6-5        95% Confidence Intervals in PPBV for Mean Formaldehyde
            Concentrations:   Case 2	   6-6

 6-6        Summary Arithmetic and Lognormal Statistics in PPBV for
            Mean Acetaldehyde Concentrations:  Case 1	   6-7

 6-7        95% Confidence Intervals in PPBV for Mean Acetaldehyde
            Concentrations:   Case 1	   6-7

 6-8        Summary Arithmetic and Lognormal Statistics in PPBV for
            Mean Acetaldehyde Concentrations:  Case 2	   6-8

 6-9        95% Confidence Intervals in PPBV for Mean Acetaldehyde
            Concentrations:   Case 2	   6-8

 6-10       Summary Arithmetic and Lognormal Statistics in PPBV for
            Mean Acetone Concentrations:  Case 1	   6-9

 6-11       95% Confidence Intervals in PPBV for Mean Acetone
            Concentrations:   Case 1	   6-9

 6-12       Summary Arithmetic and Lognormal Statistics in PPBV for
            Mean Acetone Concentrations:  Case 2	   6-10


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6-13       95% Confidence Intervals in PPBV for Mean Acetone
           Concentrations:  Case 2	   6-10

6-14       ANOVA Models with Corresponding (cs and P-values for
           Case 1	   6-30

6-15       Correlation (COR) and Covariance (COV) of Mean
           Concentrations by Sites for Case 1	   6-31

6-16       Summary of Formaldehyde ABS Percent Differences  (DIP) and
           Standard Deviations  (STD) for Case 1	   6-35

6-17       Summary of Acetaldehyde ABS Percent Differences  (DIP) and
           Standard Deviations  (STD) for Case 1	   6-35

6-18       Summary of Acetone ABS Percent Differences  (DIP) and
           Standard Deviations  (STD) for Case 1	   6-35

6-19       Spiked QA Cartridge  Results for 1989 UATMP  Aldehyde
           Monitoring	   6-44
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                         1.0  SUMMARY AND CONCLUSIONS

     This report summarizes the results of sampling ambient air for selected
carbonyls in 14 urban centers in the contiguous United States as part of the
Urban Air Toxics Monitoring Program (UATMP).  Formaldehyde, acetaldehyde, and
acetone concentrations were measured using 2,4-dinitrophenyl hydrazine-coated
resin cartridges to collect the carbonyls for subsequent analysis.  Sampling
and analysis followed guidance provided in EPA compendium method TO-11.
Formaldehyde concentrations ranged from 0.43 to 8.91 ppbv with an average
concentration for all sites of 2.13 ppbv. Site average formaldehyde
concentrations ranged from 1.41 ppbv for Wichita, KS (W2KS) to 3.81 for
Washington, DC (W1DC).  Acetaldehyde concentrations ranged from 0.37 to
7.57 ppbv, averaging 1.37 ppbv over all 1989 UATMP sites.  Site average
acetaldehyde concentrations ranged from 0.94 ppbv at Sauget, IL (SAIL) to
1.857 ppbv at Houston, TX (H1TX).  Acetone concentrations ranged from 0.37 to
8.77 ppbv and averaged 2.09 ppbv over all sites.  Site average acetone
concentrations ranged from 1.00 ppbv at Ft. Lauderdale, FL (FLFL) to 2.71 ppbv
at St. Louis, MO (S2MO).
     The precision as measured by the mean percent difference of concentration
for analysis of duplicate samples over all sites was near 11.8% for
formaldehyde, near 14.5% for acetaldehyde, and near 16.7% for acetone.  At
individual sites the mean percent differences ranged from 8.1 to 19.4% for
formaldehyde, from 10.0 to 19.4 percent for acetaldehyde, and from 9.3 to 27.6
percent for acetone.
     Accuracy was measured as bias from audit samples.  For formaldehyde bias
ranged from -12.0 to 28.0% and averaged 6.2 percent.  For acetaldehyde, bias
ranged from -38.0 to 52.0% and averaged 13.8 percent.  For acetone bias ranged
from 12.0 to 43.0% and averaged 25.2 percent.  The percent difference and
biases reported in this study indicate that the sampling and analytical
methodology is repeatable and valid.

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     Concentration data for formaldehyde,  acetaldehyde, and acetone appeared
to be distributed approximately as the lognormal  distribution at the sites in
the 1989 UATMP.  Average monthly concentrations differed from month to month
over all sites and from site to site.   Smallest average monthly concentrations
appeared to be in March while concentrations peaked in October at nearly all
sites.
     Formaldehyde and acetaldehyde concentrations correlate well at all sites.
Little correlation exists between acetone  and either formaldehyde or
acetaldehyde.
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                               2.0   INTRODUCTION

     The U.S. Environmental Protection Agency (EPA) developed the Urban Air
Toxics Monitoring Program (UATMP) to help state and local agencies assess the
nature and magnitude of their air toxics problems.  The UATMP sampler collects
ambient air samples at urban sites in 6-liter (L) SUMMA*-treated stainless
steel canisters.  At the same time, through a separate heated sample line,
ambient air samples are drawn in parallel through duplicate cartridges which
trap the carbonyl compounds from the ambient air.
     The UATMP is a companion to the Nonmethane Organic Compound (NMOC)
Monitoring Program which began in the summer of 1984.  The NMOC monitoring
program measures the total concentration of organic compounds, with the
exception of methane, but does not speciate organics.  The UATMP speciates 38
toxic compounds listed in Table 2-1, primarily aromatic hydrocarbons and
halocarbons collected in canisters.
     The aldehyde cartridges collected at the UATMP sites for 1989 were
extracted and analyzed by the Atmospheric Research and Exposure Assessment
Laboratory (AREAL) of the U.S. EPA at Research Triangle Park, NC for
formaldehyde, acetaldehyde, and acetone.  These carbonyls were selected as
target compounds for the 1989 UATMP.  This report presents the data summaries
and other data assessments for the carbonyl samples collected during the  1989
UATMP season.  The air toxics compounds collected in canisters for the 1989
UATMP season are reported separately.1>2
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                   TABLE 2-1.  1989 UATMP TARGET COMPOUNDS
                  Canister  Analvtes            Cartridge  Analvtes

                  Acetylene                     Formaldehyde
                  Propylene                     Acetaldehyde
                  Chloromethane                  Acetone
                  Vinyl  chloride
                  1,3-Butadiene
                  Bromomethane
                  Chloroethane
                  Methylene chloride
                  trans-1,2-Dichloroethylene
                  1,1-Oichloroethane
                  Chloroprene
                  Bromochloromethane
                  Chloroform
                  1,1,1-Trichloroethane
                  Carbon  tetrachloride
                  1,2-Dichloroethane
                  Benzene
                  Trichloroethylene
                  1,2-Dichloropropane
                  BromodiChloromethane
                  c1s-l,3-Dichloropropylene
                  Toluene
                  n-Octane
                  trans-1,3-01chloropropylene
                  1,1,2-Trichloroethane
                  Tetrachloroethylene
                  Oi bromochloromethane
                  Chlorobenzene
                  Ethyl benzene
                  m-Xylene
                  p-Xylene   .
                  o-Xylene
                  Styrene
                  Bromoform
                  1,1,2,2-Tetrachloroethane
                  m-01chlorobenzene
                  P--01 chlorobenzene
                  o-Oichlorobenzene
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                              3.0   UATMP  FOR  1989

     Brief program descriptions for the air toxics and aldehyde portions of
the UATMP are given in this section.  Both the air toxics and aldehyde
programs collected integrated 24-hour ambient air samples on a 12-day schedule
beginning the week of January 13,  1989, except for the site at Pensacola,
Florida as noted below.  Sampling for the 1989 UATMP was completed on
January 23, 1990.
     Whole-air integrated ambient air samples were collected in 6-1 SUMMA*-
treated stainless steel canisters.  Simultaneously a parallel ambient air
stream was passed through 2,4-dinitrophenyl hydrazine-treated cartridges at 13
sites shown in Table 3-1.  The table also gives Radian site codes, Aerometric
Information Retrieval System  (AIRS) Numbers,  and EPA Regions.  Additional
description of the sites from the AIRS data base are given in Appendix A.  The
UATMP site at Pensacola, Florida obtained the first sample on April 22, 1989,
but sampling was interrupted until December 11, 1989.  Samples taken at PEFL
on April 22, 1989, December 18, 1989, January 4, 11, 17, and 29, 1990 will be
reported in1 the current carbonyl 1989 UATMP,  and in the air toxics 1989 UATMP
reports.  Sampling continues at PEFL and samples obtained after January 29,
1990 will be included in the  1990 UATMP report.   Aldehyde samples were taken
simultaneously with all the UATMP canister samples.  Duplicate cartridges were
installed in parallel in a separate heated sample probe.  Ambient air was
drawn through the aldehyde cartridges for 24 hours at constant flow rate.  The
flow rate which is in the range of 600 to 900 ml/min, is measured at each site
by the site operator before and after taking each sample.  Aldehyde cartridges
are DNPH-coated resin which reacts with aldehydes in ambient air, trapping
them in the cartridge.
     Three laboratories are involved in the aldehyde cartridge preparation,
distribution and analysis.  An independent EPA contractor prepares aldehyde
sampling cartridges in batches.  The Radian RTP laboratory obtained the
prepared cartridges for distribution to the shipping boxes containing the

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         TABLE 3-1.  1989 URBAN AIR TOXICS MONITORING PROGRAM SITES
Region City
II Camden, NJ
III Washington, OC
Washington, DC
IV Miami, FL
. Ft. Lauderdale, FL
Pensacola, FL
V Chicago, IL
Sauget, IL
VI Dallas, TX
Houston, TX
Baton Rouge, LA
VII Wichita, KS
Wichita, KS
St. Louis, MO
Radian
Site Code
CANJ
W1DC
W2DC
M1FL
FLFL
PEFL
C4IL
SAIL
DLTX
H1TX
BRLA
W1KS
W2KS
S2MO
AIRS Number
34-007-0003
11-001-0025
11-001-0039
12-025-4002
12-011-1003
12-033-0004
17-031-0060
17-163-1010
48-113-0069
48-201-1034
22-033-0004
20-173-0010
20-173-0009
29-510-0072
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canisters that are sent to the UATMP sites, along with the aldehyde field data
sheet.  Radian coordinates the return and transfer of the exposed aldehyde
sample cartridges, and custody records to the U.S. EPA AREAL for analysis.
EPA's AREAL extracts samples from the cartridges and analyzes these extracts
for target compounds.  Radian Corporation reviews the analytical results,
summarizes the data, and is responsible for semiannual and annual result
summaries, which will be distributed to EPA and participating agencies.
Figure 3-1 shows the aldehyde sample and data flow for the 1989 UATMP.
lmo/111                               3-3

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                                                EPA Contractor
                                                 Aldehyda Cartridga*
                                                    Lot of 300
               Radan-PPK

             CafcUata Ftow Rat*

               Transfer to

             LOTUS Spraadahaat
                                                 Radan OatrtUtan
                                                 of CartridQM wth
                                                  FWdCMaFom
              Tranan* Samcto*
             Ui LOTUS SpTMOk
              to8PA(AflEAL)
                                                                               Corr«cttv«
                                                                             Action
                                                                             Radan
                AREALV«1fy
               TkAaaandCMa

               FtoonRecdpt
               AREAL Analyala
             of AMahyda Cartrtdgaa
                       AREAL Raport
                        ofOatabaa*
                         (ASCI)
          RavtowofData
       ForOicloataPracWon
  OK
   NO    Rafar Unaxplatad
        Data Points to AREAL
OK
 Radan
Fhal Raport
Stadatca
                                     Dlatrfeuto
                                    ToRagonaL
                                   State, and Local
                                     Contacta
        Figure 3-1.   1989 UATMP  Aldehyde Data  Flow
eak.lS7f
                                          3-4

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          4.0  SAMPLING, ANALYSIS, AND QUALITY ASSURANCE PROCEDURES

     Sampling and analysis  procedures for the aldehyde samples,  along with the
quality assurance procedures used to quantify data quality  are described in
this section.  Implementing the UATMP involved Radian personnel  installing the
sampling equipment for the  canister and the aldehyde samples,  and training
site personnel  to operate the equipment properly,  and observing all the
quality assurance procedures necessary to ensure the integrity of the sample,
and to providing appropriate documentation.  The site operators's task
involved recognizing problems with sampling equipment and procedures, and
notifying Radian personnel  at Research Triangle Park so that appropriate
corrective action might be  taken.
4.1  SAMPLING EQUIPMENT AND PROCEDURES
     A schematic diagram of the UATMP sampler is shown in Figure 4-1.  The
sampler consists of two subsystems, the VOC canister and the aldehyde
cartridge.  Each subsystem collects a discrete sample through use of a common
control system.  Each sampler subsystem has a separate atmospheric inlet.  The
ambient air is introduced through an inverted glass funnel  and heated
stainless steel probe.  The heated probe is maintained at 150*F to prevent
moisture condensation.  The aldehyde cartridges are mounted in parallel, so
that the aldehyde samples are collected in duplicate during each sampling
episode.  The aldehyde cartridge is a commerically available (Waters Co.)
silica gel Sep-pak* cartridge which is coated with 2,4-dinitrophenol hydrazine
(DNPH).  The cartridges are prepared in batches by the laboratory and stored
under refrigeration until shipped to the field.
     The aldehyde cartridges are installed in the sample line several days
ahead of scheduled sample collection.  The collection frequency was planned
once every 12 days (30 per year).  A 24-hour sample collection period was
utilizied for both the canister and cartridge samples.  The aldehyde probe was
purged and heated prior to sample collection period.  In addition to the

lmo/111                               4-1

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 Heated Inlet Une
"////// s s'F'.

            s /
                            J-
Aldehyde

Cartridges
                                                     Duplicate
Filter/Orifice Assembly

               Primary
                                Pump activated
                                prior to sample
                                period to purge
                                Wet lines
                                                                  Aldehyde Subsystem
fe
                                                                     Toggle
                  Figure 4-1.1989 UATMP sampling assembly.
                                         4-2

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aldehyde cartridges installed in the sample line,  a third cartridge is sent
along in the shipment box as a trip blank.
     The flow rate through each sample cartridge was measured before and after
each collection period by the site operator.   The flow rate was measured with
a calibrated rotameter and recorded on a preformatted data sheet.  The volume
of ambient air sampled through each cartridge was calculated in the laboratory
based on the field-recorded flow rate measurements.
4.2  ANALYTICAL PROCEDURES
     The analytical procedures for aldehydes  is given below.  Sample
preparation and analyses are performed at the AREAL by EPA personnel.  A
sample cartridge is removed from its shipping vial and attached to the end of
a 10-mL polypropylene syringe.  Six milliliters of acetonitrile are added to
the syringe and allowed to drain through the cartridge into the graduated
centrifuge tube.  After the drainage has stopped the volume of extract Is made
up to 5-mL with acetonitrile and mixed.  A portion of this solution is
transferred to a 4-mL sample vial fitted with a Teflon*-!ined self-sealing
septum and stored in a refrigerator until used.  TO-11 high pressure liquid
chromatography (HPLC) column and elution solvents used for analysis were
modified to decrease analysis time.
     The separation is done using a 10-cm x 0.46-cm CIS analytical column with
3-micron particle size preceded by a 5-cm x 0.46 cm CIS guard column
containing 5-micron particles.  Typically 20-microliter samples are injected
with an automatic sample injector.  The isocratic elution is carried out with
a 25% (by volume) acetonitrile, 25% tetrahydrofuran aqueous solution at 2.4
mL/min.  Detector signals from a programmable multiwavelength detector are
collected for 10 minutes at 220, 254, 330,  and 360 nanometers (nm).  Any
residual sample is eluted from the column in three minutes with 100%
acetonitrile.
     The relevant chromatographic peaks determined by acceptable retention
times are integrated and the concentrations calculated using standard curves
from standards analyzed the same day as the samples.  The 360-nm absorption  is
used for this purpose.  Other wavelengths are used to compute signal purity  by
comparing signal at these wavelengths for standards to the absorption for each
sample.  Detection limits are determined by a one-sided tolerance  interval
around the repeatability of the lowest standard.  This procedure was modified
based on experience with the samples.  The analysis modifications  optimize

lmo/111                               4-3

-------
sample throughput for analysis of formaldehyde,  acetaldehyde,  and acetone.
Some other species may coelute with these target compounds using this HPLC
column and isocratic elutibn approach.
     The aldehyde species to be reported are formaldehyde and acetaldehyde.
Acetone, a ketone, is also reported.  All results were reported to Radian in
parts per billion by volume (ppbv) from the laboratory via floppy disk.  All
EPA reported analyses were identified by the unique tube numbers.
4.3  QUALITY ASSURANCE PROCEDURES
     Quality assurance procedures relative to calibration data for acetone,
formaldehyde, and acetaldehyde are discussed below.  Daily quality control
procedures are also discussed.  Sampling and analysis precision was determined
from the analysis of duplicate field samples.  Sample custody records were
maintained throughout the program.  Figure 4-2 shows the multi-page field data
and custody sheet used for the aldehyde cartridges.
4.4. CALIBRATION PROCEDURES
     The calibration procedures used for this study followed AREAL standard
operating procedures.
4.4.1  Daily Quality Control Procedures
     Daily calibration checks were used to assure that the analytical
procedures were in control.  Aldehyde samples were analyzed in batches of 75
to 100 tubes throughout the year.  Independently prepared audit samples were
analyzed with each batch of field samples.  Daily QC checks were performed
each day analyses were conducted.
4.4.2  Duplicate Samples
     Duplicate field cartridges were installed in parallel in the sample  probe
for each sampling episode, as shown in Figure 4-1.  The paired average of the
analyses of these duplicate cartridges was used as the average sample
concentration in this report.  If one of the field duplicates was broken  or
otherwise declared invalid, the analysis of the remaining cartridge was used
as the reported sample concentration.  Likewise if one of the duplicates
showed a concentration above the detection limit and the other duplicate
reported a concentration below the detection limit, the concentration  above
the detection limit was reported as the  sample concentration.
4.4.3  Trio Blanks
     For each pair of aldehyde samples,  a trip-blank cartridge was  included  in
the field site shipment.   The blank consisted of a regular DNPH-cartridge with

lmo/111                               4-4

-------
        URBAN TOXICS MONITORING PROGRAM
                        Aldehyde Data Sheet
City
SAROADNo.	•	•	-A05
                      Sample Date
                      Sampler No.
     Cartridge
     Tube No.
       Lot No.

Rotameter No. _
Port A (red)
Port B (green)
(blank)
Rotameter Reading'.
       . (before)
Rotameter Reading1	/	(after)
Sampling Time/Duration 	(hours)
Sampling Volume3	(liters)
Average Ambient Temperature	
Average Barometric Pressure	
Site Operator	
Comments/Remarks
     Flow Rate3
       Before
       After
      Average
 .(C'or F*)
 LPM
                . (mm Hg)
                                              a
                                              o
                                              o
o
o
a>
"5.
(0
1 Rotameter reading center of black ball.
2 Calculated from calibration curve by the laboratory.
3 Calculated by laboratory.
                   Figure 4-2. Aldehyde Field Data Sheet
                                  4-5
                                               S
                                               s

-------
caps, Identical with the sample cartridges.   Each cartridge had a unique
serial number for Identification purposes.   The blank cartridge accompanies
the duplicate sample cartridges on the trip  to and from the site, without
removing the caps on each end of the cartridge.  The trip-blank cartridge is
not exposed to air at any time  during the  shipment or sampling periods.  The
trip-blank cartridges are analyzed for formaldehyde, acetaldehyde, and acetone
at the same time the sample cartridges are  analyzed.  If the concentration of
an analyte on the trip blank was measured to be above the detection limit, the
concentrations of the duplicate samples were corrected for the blank
concentration where the analytical results  were above the analytical detection
limit (ADL).
4.4.4  Precision
     Precision was measured as the average  standard deviation of the paired
duplicate samples.  The relation between precision and mean concentration, and
between absolute percent difference and mean concentration were investigated.
4.4.5  Accuracy
     Accuracy was determined by analyzing audit samples prepared by the
Quality Assurance Division (QAO) of AREAL.   All audit samples contained
formaldehyde, and acetaldehyde.  Selected audit samples also contained
acetone.
     The program acknowledges a potential bias for the reported carbonyl
concentrations due to ozone interference.  The ozone interference is under
investigation by the agency and will be addressed in the 1990 UATMP carbonyl
report.
lmo/111                               4-6

-------
                                 5.0 RESULTS

5.1  ANALYTICAL RESULTS
     Analytical results are presented In Appendices B and C. Concentrations of
formaldehyde, acetaldehyde, and acetone are reported in ppbv, and are
tabulated by site.
     Figure 5-1 shows the annual  average of the mean concentrations for the
three compounds at each site.  Figures  5-2 through 5-15 show the mean
concentrations for the three compounds  by sampling episode.  Each of the
figures represents a separate site.   For example, Figure 5-2 shows the mean
concentrations for each sampling episode at site BRLA.  Each sampling episode
corresponds to a date given in the site tables in Appendix B and C.  Sampling
episodes number the dates listed chronologically.
5.2  ANALYSIS RESULT STATISTICS
     Appendix B gives rudimentary statistics for the carbonyl analyses.  Each
site shows two tables in Appendix B that correspond to the two data analysis
cases discussed in the following section.  Tables B-l and B-2 list statistics
for BRLA, for example.
     In Table B-l for BRLA, the first column gives, in compressed format, the
date on which the sample was taken.   For the first sample taken at BRLA, for
example, the sample date is given as "16JAN89," which indicates that the
sample was taken on January 16, 1989.  The second column in the table shows
the day of the week for the sample date.  Weekday 1, refers to Sunday; 2 to
Monday; 3 to Tuesday; etc.  ID Numbers  listed in the tables of Appendix B
refer to the Radian ID Numbers for the  UATMP samples collected on the sample
date.  The ID Numbers carrying a "D" after the first four digits refers to a
UATMP sample that was taken in duplicate.
     Overall averages are given for each mean concentration, percent
difference, and standard deviation column in the tables of Appendix B.  These
lmo/111                               5-1

-------
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overall averages may be considered to be annual  averages, since the time
Interval of the study was approximately one year.
5.3 ANALYTICAL RESULTS DATA
     Appendix C lists all of the analytical data received from the EPA
laboratory.  In addition to sample date, week day, and ID NO., the tables show
"Lot," which identifies the lot number of the aldehyde cartridge used in
obtaining the sample.  The aldehyde cartridges were fabricated in lots of
about 300 cartridges per lot, and each lot was give a Lot Number in order to
identify it uniquely.
     Each table in Appendix C contains the analytical results from the
indicated site.  Concentration and purity data are listed for (duplicate)
tube 1, and (duplicate) tube 2.  The choice of which duplicate was designated
as tube 1, and which was tube 2, was completely arbitrary.
lmo/111                              5-17
-------
                               6.0 DATA ANALYSIS

6.1   INTRODUCTION
     The UATMP carbonyl data summaries were prepared for two separate,
parallel cases that illustrate how summary statistics and analysis results may
differ according to the method by which mean concentrations are determined.
Four types of concentrations were reported:  1) concentrations > ADL, 2)
concentrations < ADL, 3) zero, and 4) missing.  Tube concentrations listed as
zero were set to missing and excluded from further calculations in both cases.
When both tube concentrations were reported by the analytical laboratory below
the ADL, the mean concentration was set to "missing" in both cases.  In the
first case, hereafter referred to as Case 1, a mean concentration was
calculated from the two tube concentrations only when both concentrations were
above the ADL.  When one tube concentration was above the ADL and the other
tube concentration was below the ADL, zero, or missing, the tube concentration
above the ADL was reported as the mean concentration.  For Case 2, a mean
concentration was calculated similar to Case I, however, when one tube
concentration was above the ADL and the other tube concentration was below the
ADL, a value of one-half the ADL was substituted for the tube concentration
below the ADL, and a mean was then calculated from the two tube
concentrations.  If the other tube concentration, i.e., the one not above the
ADL, was zero or missing, the tube concentration above the ADL was reported as
the mean concentration.  These two cases were applied to all three compounds.
The ADL chosen for these two cases were the same for formaldehyde,
acetaldehyde, and acetone--0.36 ppbv.
     Several statistical summaries and plots were generated to characterize
the aldehyde data.  Summary statistics, including the means and standard
deviations of the normal and lognormal distributions; percentiles; and
confidence intervals were calculated by site and over all sites.  Box plots
and stem-and-leaf plots were constructed visually to represent the data

lmo/111                               6-1
-------
distributions.  The question of seasonality in the aldehyde data was addressed
by plotting monthly-averages by site to enable a visual  determination of
potential monthly periodicity of the concentration data.  Intercarbonyl
correlations and covariances were calculated to demonstrate the relatedness of
the compound concentrations.  A measure of variability and a measure of
precision were calculated for each tube pair when both tube concentrations
were above the AOL.  Finally, audit sample results were  summarized.
6.2  SUMMARY STATISTICS
     Summary statistics were calculated by site and compound, as well as over
all sites for each compound, for both the mean concentrations and for the
mean concentrations of the corresponding lognormal distributions.  The natural
logarithms were considered because air quality data are  often more closely
lognormally distributed than normally distributed.  These two sets of summary
statistics were calculated for both Case 1 and Case 2, resulting in a total of
four sets of summary statistics for each compound.
     The summary statistics were calculated and stored for use in summary
tables by the Statistical Analysis System (SAS*)  univariate procedure.  This
procedure provides a test statistic and corresponding probability for the null
hypothesis that the data examined are normally distributed.  For sample sizes
(N) less than or equal to 2000, which is the case for all samples in this
report, SAS provides the Shapiro-Wilk statistic, W, against which to test the
                                          *
null hypothesis.  For testing at the 95 percent confidence level, the null
hypothesis is accepted when the probability of a smaller W is larger than
0.05.
     Table 6-1 lists the probabilities for a smaller W for the distributions
of the mean concentrations and for the distributions of the natural logarithms
of the mean concentrations, by compound, for Case 1 and Case 2 .  The site
code "ALL" refers to the summary over all 1989 field sites.  No probabilities
are listed for site PEFL, because the sample size is only seven.  The sample
sizes for the other sites are still only minimal to provide meaningful
probability distribution characterizations.  The probabilities listed in
Table 6-1 support the postulate that the data are more nearly lognormally
distributed than normally distributed.  The null hypothesis  (normally
distributed data)  is accepted for the distributions of the mean concentrations
only 3 times out of 39 for Case 1 and only 7 times out of 39 for Case 2.  On
the other hand, the null hypothesis is accepted 37 out of 39 times for both

lmo/111                               6-2
-------
           TAIL! 4-1.   PMUBUITin  FOf. A SNAUII U IT AT HT 1C NX DISTRIBUTIONS Of
                       THE MEAN CONCENTRATIONS AND LOGS Of THE MEAN CONCENTRATIONS
FORMALDEHYDE DISTRIBUTION
SITE
CODi
ALL
HLA
C4IL
CAMJ
OLTX
FLFL
N1TX
MIFL
PEFL
S2MO
SAIL
M10C
U1KS
U2DC
W2KS
MEAN CONC
M CASC1 CASE2
416
31
30
32
29
32
38
32
7
31
30
28
30
30
36
.000
.033
.002
.000
.010
.024
.003
.047

.017
.004
.167*
.000
.000
.002
.000
.045
.002
.001
.010
.024
.003
.104*

.034
.004
.167*
.000
.000
.00*
L06
MEAN
CASE1
.263*
.043
.718*
.64**
.587*
.337*
.384*
.345*

.821*
.946*
.11««
.300*
.467»
.329*
Of
CMC
CASE2
.566*
.002
.718*
.258*
.587"
.337*
.384*
.414*

.948*
.946*
.119*
.447*
.287»
.809*
ACCTALOEHYOE OlSTtlWTIOM
N
406
30
27
32
29
32
38
31
7
30
29
28
28
30
35
MEAN
CASE1
.000
.689*
.000
.000
.291*
.004
.000
.009

.005
.001
.039
.000
.000
.000
CONC
CASE2
.000
.689*
.000
.000
.291*
.006
.000
.053*

.054*
.003
.039
.000
.000
.000
ACETONE DISTRIBUTION
too or
MEAN CONC
CASE1
.181*
.513*
.107*
.762*
.372*
.210*
.016
.169*

.612*
.465*
.518*
.571*
.090*
.287*
CASE2
.321*
.313*
.202*
.762*
.372*
.631*
.016
.686*

.760*
.952*
.518*
.816*
.065*
.322*
M
378
26
29
30
28
27
34
19
6
30
27
28
30
28
36
MEAN
CASE1
.000
.000
.001
.002
.001
.000
.002
.000

.000
.000
.002
.029
.001
.029
CONC
CASE2
.000
.000
.001
.004
.001
.000
.005
.000

.000
.000
.004
.034
.001
.071*
LOG Of
MEAN CONC
CASE1
.003
.594*
.258*
.981*
.149*
.057*
.311*
.775*

.809*
.505*
.724*
.308*
.783*
.589*
CASE2
.000
.417*
.258*
.635*
.116*
.404*
.361«
.&61*

.633*
.815*
.467*
.257*
.730*
.661*
•Indicate* acceptance of  norMl distribution hypotheeia at th« 95* confidence level  (probability
 tartar than 0.05).
NOTIS:  N refera to th« nuabar of  otaaarvationa froai which tlw probabtlltiea were calculated.

        In CM* 1,  aaan eoneantrationa ara calcutatad using dataetabla tuba eoneantrationa  only.

        In Cat* 2,  Man eoneantrationa ara calculated using 1/2 analytical detection Halt  (AOL)  for
        tube concentration* below  AOL.
                                              6-3
-------
Case 1 and Case 2 for the distributions of the logarithms of the mean
concentrations, i.e..-supporting the postulate that the data are lognormally
distributed.
     Tables 6-2, 6-4, 6-6, 6-8, 6-10,  and 6-12 list the summary statistics by
compound and site.  The site mean and  standard deviation of the normal
distributions are compared to the mean and standard deviation of the lognormal
distribution.   Some percentiles are also listed to depict the distribution of
the data.  Because the sample size for site PEFL is very small, statistics for
that site should be interpreted with caution.  Figures 6-1, 6-2, and 6-3 show
the stem-and-leaf diagrams for formaldehyde, acetaldehyde, and acetone
concentrations, using the combined data for all sites. In the stem-and-leaf
plots, the concentration data are sorted and plotted from the minimum, at the
top of the diagram, to the maximum, at the bottom of the diagram. The stems
are shown on the left, and the leaves, shown on the right of the diagram. Each
concentration (416 cases in Figure 6-1) is plotted as a digit in the
appropriate leaf.  The stem-and-leaf plot also shows the location of the stem
for the lower and upper hinges (the 25th and 75th percentiles, respectively),
as well as the location of the stem for the median (the 50th percentile).
Other statistics for each compound are shown in Figures 6-1 through 6-3.  The
stem-and-leaf plots show that the frequency distributions of the concentration
data appear to be consistent with the hypothesis that the concentration data
are lognormally distributed.
     Tables 6-3, 6-5, 6-7 ,6-9, 6-11,  and 6-13 list the 95 percent confidence
intervals for the lognormal mean and for the median by compound and site.  The
confidence intervals for the lognormal mean are based on a formula from
Aitchison and Brown4 and the confidence intervals for the median are based on
efficient confidence intervals described by Hoaglin, et al.
6.3  BOX PLOTS
     Box plots were constructed to compare, visually, mean sample
concentration data distributions between sites.  The box plots  for the
logarithms of the mean concentrations at each  site for Case  1 are shown  in
Figures 6-4, 6-5, and 6-6 for  formaldehyde, acetaldehyde,  and acetone,
respectively.  Box plots of the natural logarithms of the mean  concentrations
are shown, because, as demonstrated in Table 6-1, the logarithms of the
concentrations are normally distributed.
 lmo/111                               6-4
-------
TABU 8-Z.  SUMMIT AIITWCTIC AND LOOOMU. STATISTICS II FfW FBI NCM RKN&DCHTK OJNCENTRATIONS:  CASE l'
t
NORMAL OIST
SITE 	
CODE N MEAN
ALL 416 2
BRLA 31 1
C4IL 30 2
CANJ 32 2
OLTX 29 2
FLFL 32 2
H1TX 38 2
NIFL 32 1
PEFl 7 1
saw 31 2
SAIL 30 1
W1DC 28 3
W1KS 30 1
W20C 30 3
W2KS 36 1
.134
.525
.073
.419
.010
.243
.319
.763
.674
.465
.450
.768
.471
.148
.409
STD
1
0
1
1
0
1
1
0
0
1
0
1
0
1
0
.265
.539
.259
.465
.799
.168
.106
.837
.489
.115
.737
.633
.871
.607
.659
L06NORMAL OIST
MEAN
2.
1.
2.
2.
2.
2.
2.
1.
1.
2.
1.
3.
1.
3.
1.
133
539
104
442
018
261
337
780
679
480
452
805
458
138
409
In Case 1. eean concentrations are calculated















STO
0.938
0.508
1.050
1.080
0.591
0.921
0.817
0.759
0.349
0.783
0.643
1.016
0.631
0.868
0.575
(NIN)
Oth
0.430
0.430
0.510
0.450
0.625
0.670
0.465
0.575
1.295
0.670
0.505
1.495
0.520
1.300
0.605
using Detectable -tie*
TABLE 8-3. 95X CONFIDENCE INTERVALS IN PPBV
MEAN CONFIDENCE
SITE
' CODE
BRLA
C4IL
CANJ
OLTX
FLFL
M1TX
NIFL
PEFL
S2NO
SAIL
U10C
W1KS
W2DC
U2M
"in Case
LOUER
BOUND
1
1
2
1
1
2
1
1
2
1
3
1
2
.360
.728
.068
.803
.942
.077
.517
.420
.204
.222
.429
.232
.827
1.221
1. •
FOR MEAN
INTERVALS
LOGNORMAL
OIST MEAN
1.
2.
2.
2.
2.
2.
1.
1.
2.
1.
3.
1.
3.
1.
539
104
442
018
261
337
780
679
480
452
805
458
138
409

UPPER
BOUND
1.
718
2.479












•MM concentrations
2.
2.
2.
2.
2.
1.
2.
1.
4.
1.
3.
1.
816
232
580
597
043
937
755
682
182
683
448
597
PERCENT I LES
(MEDIAN)
25th 50th 75th
1.260 1
1.230 1
1.135 1
1.605 1
1.510 1
1.105 1
1.565 1
1.045 1
1.315 1
1.770 2
0.935 1
1.985 3
1.015 1
2.170 2
0.890 1
.790 2.570
.530 1.745
.855 2.570
.980 2.625
.935 2.390
.910 2.805
.930 2.985
.665 2.180
.530 1.940
.160 2.930
.290 1.740
.580 4.770
.160 1.635
.550 4.040
.200 1.730
(MAX)
100th
8.905
3.410
6.520
7.005
4.775
5.180
5.805
3.405
2.655
5.365
3.575
7.320
5.015
8.905
3.145
I concentrations only.
FOWALDEHTDe CONCENTRATIONS: CASE I*
MEDIAN CONFIDENCE INTERVALS
LOUER
BOUND
1.326
1.544
1.680
1.666
1.734
1.791
1.412
1.237
1.909
1.120
3.044
1.044
2.347
1.098
are calculated using
MEDIAN
1.530
1.855
1.980
1.935
1.910
1.930
1.665
1.530
2.160
1.290
3.580
1.160
2.550
1.200
detectable
UPPER
BOUND
1.653
2.315
2.418
2.196
2.602
2.423
2.047
1.937
2.624
1.617
4.413
1.421
3.248
1.522















                  tuba concentrations only.
                                               6-5
-------
TABU 6-6.   SUMtMY ARITUCTIC AM L06NOHMAL STATISTICS IN PPW FOR MEM FORMALDEHYDE CONCENTRATIONS:  CASE 2
NORMAL OIST
SITE
CODE N
ALL 416
BRLA 31
C4IL 30
CANJ 32
OLTX 29
FLFL 32
H1TX 38
MIFL 32
PEFL 7
S2MO 31
SAIL 30
U10C 28
W1KS 30
U2DC 30
U2KS 36
MEAN STD
2
1
2
2
2
2
2
1
1
2
1
3
1
3
1
.122 1.
.521 0.
.073 1.
.414 1.
.010 0.
.243 1.
.319 1.
.755 0.
.591 0.
.410 1.
.450 0.
.768 1.
.461 0.
.090 1.
.403 0.
270
548
259
471
799
168
106
849
592
163
737
633
882
619
667
LOGNORMAL OIST
MEAN
2.126
1.546
2.104
2.462
2.018
2.261
2.337
1.783
1.612
2.428
1.452
3.805
1.451
3.075
1.408
In Case 2. mean concentrations are calculated
concentrations below AOL.
TABLE 6-5. 95X
CONFIDENCE
INTERVALS IN
STO
0.967
0,571
1.050
1.169
0.591
0.921
0.817
0.819
0.528
0.856
0.643
1.016
0.672
0.866
0.617
using 1/2
(NIN)
Oth
0.305
0.305
0.510
0.315
0.625
0.670
0.465
0.430
0.765
0.670
0.505
1.495
0.500
1.300
0.395
analytical
PERCENT I LES
(MEDIAN)
25th 50th 75th
1.240
1.230
1.135
1.605
1.510
1.105
1.565
1.045
1.295
1.595
0.935
1.985
1.015
2.155
0.890
detection
1.785 2.550
1.530 1.745
1.855 2.570
1.980 2.625
1.935 2.390
1.910 2.305
1.930 2.985
1.665 2.130
1.530 1.940
2.160 2.930
1.290 1.740
3.580 4.770
1.160 1.635
2.455 4.040
1.200 1.730
liarit (AOL) for
PPBV FOR MEAN FORMALDEHYDE CONCENTRATIONS: CASE
MEAN CONFIDENCE INTERVALS
SITE
CODE
BRLA
C4IL
CANJ
OLTX
FLFL
N1TX
NIFL
PEFL
S2NO
SAIL
W10C
W1KS
U20C
«KS















LOWER
BOUND
1.345
1.728
2.057
1.803
1.942
2.077
1.499
1.221
2.127
1.222
3.429
1.211
2.765
1.207
LOGNORMAL
OIST MEAN














1.546
2.104
2.462
2.018
2.261
2.337
1.783
1.612
2.428
1.452
3.805
1.451
3.075
1.408
UPPER
BOUND
1.747
2.479
2.867
2.232
2.580
2.597
2.066
2.003
2.730
1.682
4.182
1.691
3.385
1.610
(MAX)
100th
3.905
3.410
6.520
7.005
4.775
5.180
5.305
3.405
2.655
5.365
3.575
7.320
5.015
8.905
3.145
tube
a
2
MEDIAN CONFIDENCE INTERVALS
LOWER
BOUND
1.327
1.544
1.675
1.666
1.734
1.791
1.402
1.030
1.877
1.120
3.044
1.026
2.235
1.090
MEDIAN
1.530
1.855
1.980
1.935
1.910
1.930
1.665
1.530
2.160
1.290
3.580
1.160
2.453
1.200
UPPER
BOUND
1.654
2.315
2.420
2.196
2.602
2.423
2.046
2.044
2.686
1.617
4.413
1.422
3.096
1.522














                    In Case 2, eean concentrations are '••Iculated using 1/2 analytical
                    detection Halt (AOL) for tube concc  : rat Ions below AOL.

                                                 6-6
-------
TABU S-«.   SIMttftY MITMCTIC AND LOGN00UL STATISTICS  IN  PPBV FOR MEAN ACCTALD€HYDE CONCENTRATIONS:  CASE  1
NORMAL DIST
SITE
CODE N
ALL 406
BRLA 30
C4IL 27
CANJ 32
OLTX 29
FLFL 32
H1TX 38
MIFL 31
PEFL 7
S2MO 30
SAIL 29
W1DC 28
U1K 28
U2DC 30
U2KS 35
In Case I. i
TABLE 6-7.
MEAN STO
1.372 0.
1.249 0.
1.360 0.
1.606 0.
1.317 0.
1.313 0.
1.862 1.
1.170 0.
1.166 0.
1.489 0.
0.937 0.
1.823 0.
0.989 0.
1.636 1.
1.041 0.
811
458
850
981
454
692
189
591
283
698
531
880
534
049
561
eean concentrations
95X CONFIDENCE
I06NORMAL DIST
MEAN
1.367
1.259
1.379
1.606
1.325
1.318
1.357
1.175
1.170
1.490
0.935
1.339
0.981
1.613
1.035
STO
0.697
0.483
0.859
0.313
0.446
0.671
0.801
0.608
0.258
0.590
0.559
0.753
0.502
0.704
0.505
are calculated using
INTERVALS IN
(MIN)
Oth
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.370
.410
.390
.440
.420
.455
.375
.500
.910
.630
.370
.640
.410
.665
.450
detectable
PPBV FOR MEAN
MEAN CONFIDENCE INTERVALS














SITE LOWER
CODE BfflJNP
BRLA 1.086
C4IL 1.099
CANJ 1 .324
OLTX 1.163
FLFL 1.086
H1TX 1.602
NIFL 0.961
PEFL 0.979
S2MO 1.279
SAIL 0.731
W1DC 1.560
U1K8 0.799
U20C 1.361
V2KS 0.868
LOGNORMAL
OIST MEAN














1.259
1.379
1.606
1.325
1.318
1.857
1.175
1.170
1.490
0.935
1.839
0.981
1.613
1.035
UPPER
1.431
1.703
1.888
1.487
1.551
2.111
1.389
1.361
1.702
1.138
2.118
1.167
1.866
1.202
PERCENT I LES
25th
0
0
0
0
1
0
1
0
0
0
0
1
0
1
0
.830
.860
.809
.945
.015
.740
.300
.630
.930
.935
.565
.005
.680
.090
.700
(MEDIAN)
50th 75th
1.205 1.710
1.230 1.600
1.190 1.810
1.275 1.930
1.225 1.670
1.190 1.715
1.575 1.885
1.100 1.490
1.050 1.495
1.210 1.360
0.740 1.150
1.715 2.285
0.850 1.110
1.285 1.695
0.905 1.140
(MAX)
100th
7.565
2.225
4.575
4.585
2.630
3.435
7.565
2.740
1.610
3.345
2.515
4.160
3.050
5.790
3.295
tube concentrations only.
ACETALDEHYDC CONCENTRATIONS: CASE
MEDIAN CONFIDENCE
LOWER
BOUND
1.
1.
1.
1.
1.
1.
0.
0.
1.
0.
1.
0.
067
008
119
116
028
400
926
864
152
668
441
744
MEDIAN












1.130
0.
797

1.230
1.190
1.275
1.229
1.190
1.575
1.100
1.050
1.210
0.740
1.715
0.850
1.289
0.909
INTERVALS
UPPER
BOUND
1.419
1.553
1.620
1.464
1.512
1.807
1.354
1.398
1.641
1.017
2.122
1.027
1.528
1.094
a
2













                   *In Case 1.  wan concentrations are calculated using detectable tube
                    concentrations only.
                                                  6-7
-------
TABU 8-8.   SUMMARY ARITHMETIC AND L06NORNAL STATISTICS IN PPW FM MEAN ACETALOEHYK CONCENTRATIONS:   CASE 2*
.NORMAL OlSt
SITE
CODE N
ALL 406
BRLA 30
C4IL 27
CANJ 32
DLTX 29
FLFL 32
H1TX 38
NIFL 31
PEFL 7
S2MO 30
SAIL 30
SAIL 29
W10C 28
W1KS 28
U2DC 30
U2KS 35
In Case 2. eaar
concentrations
TABLE 8-9
MEAN STO
1.360 0
1.249 0
1.356 0
1.606 0
1.317 0
1.278 0
1.862 1
1.159 0
1.166 0
1.446. 0
0.989 0
0.922 0
1.823 0
0.975 0
1.613 1
1.024 0
.819
.458
.854
.981
.454
.686
.189
.605
.283
.745
.653
.546
.880
.545
.059
.581
LOGNORMAL OIST
MEAN
1.361
1.259
1.384
1.606
1.325
1.284
1.857
1.172
1.170
1.465
0.989
0.925
1.839
0.978
1.588
1.028
i concentrations are calculated
below AOL.
. 95X CONFIDENCE
INTERVALS IN
STO
0.746
0.483
0.908
0.813
0.446
0.682
0.801
0.678
0.258
0.752
0.716
0.629
0.753
0.564
0.713
0.609
using 1/2
(NIN)
Oth
0.275
0.410
0.285
0.440
0.420
0.385
0.375
0.340
0.910
0.405
0.275
0.275
0.640
0.295
0.665
0.315
analytical
25th
0.820
0.860
0.805
0.945
1.015
0.740
1.300
0.630
0.930
0.915
0.555
0.555
1.005
0.680
1.040
0.700
PERCENT I LEI

(MEDIAN) (MAX)
50th 75th 100th
1 .200 1 .
1.230 1.
1.190 1.
1.275 1.
1.225 1.
1.125 1.
1.575 1.
1.100 1.
1.050 1.
1.210 1.
0.740 1.
0.740 1.
1.715 2.
0.850 1.
1.270 1.
0.905 1.
detection lierit (AOL)
PPBV FOR NEAN ACETALDEHYDE CONCENTRATIONS:
MEAN CONFIDENCE INTERVALS














SITE LOUER
CODE POUND
BRLA 1.086
C4IL 1.041
CANJ 1.324
DLTX 1.163
FLFL 1.048
H1TX 1.602
NIFL 0.933
PEFl 0.979
S2NO 1.196
SAIL 0.696
U10C 1.560
U1KS 0.769
U2DC 1.333
U2KS 0.826
L06NORMAL
OIST MEAN














1.259
1.384
1.606
1.325
1.284
1.857
1.172
1.170
1.465
0.92S
1.839
0.978
1.588
1.028
BOUND
1.431
1.726
1.888
1.487
1.520
2.111
1.411
1.361
1.734
1.154
2.118
1.187
1.843
1.230
MEDIAN CONFIDENCE
LOUER
BOUND
1.067
1.002
1.119
1.116
0.985
1.400
0.911
0.864
1.095
0.655
1.441
0.730
1.119
0.773
MEDIAN
1.230
1.190
1.275
1.225
1.125
1.575
1.100
1.050
1.210
0.740
1.715
0.850
1.270
0.905
INTERVALS
UPPER
BOUND
1.419
1.552
1.620
1.464
1.451
1.807
1.351
1.396
1.634
1.035
2.122
1.027
1.538
1.055
705 7.565
600 2.225
810 4.575
930 4.585
670 2.630
715 3.435
885 7.565
490 2.740
495 1.610
860 3.345
155 2.960
150 2.515
285 4.160
110 3.050
695 5.790
,140 3.295
for tube
CASE I













                      In Cas* 2. nan concentrations are calculated using 1/2 i
                      detection llertt (AOL)  for tube concentrations below AOL.

                                                   6-8
ilytlcal
-------
TABU HO.   SlUMRY ARITHMETIC AND LOfiNORKM STATISTICS !• FfW  FW MEM ACCTOK CfltCOfTRATIOIB:  CASE 1
NORMAL DI8T L06NORMAL DIST
SITE 	
COOe M NEAN STO MCAN
ALL 378 2.078 1.426 2.093
MLA 26 1.689 1.408 1.682
C4IL 29 2.383 1.508 2.406
CANJ 30 2.654 1.845 2.708
OLTX 28 1.935 1.058 1.944
FLFL 27 1.015 0.768 0.997
H1TX 34 1.699 1.074 1.723
NIFL 19 1.332 1.070 1.317
PEFL 6 1.854 1.151 1.865
S2MO 30 2.706 1.748 2.710
SAIL 27 1.898 1.352 1.911
W10C 28 2.214 1.300 2.231
W1KS 30 2.266 1.444 2.354
W2DC 28 2.546 1.584 2.551
U2M 36 2.314 1.167 2.337
STO
1.204
1.094
1.157
1.464
0.861
0.719
1.057
0.878
0.775
1.126
1.114
1.003
1.423
1.088
0.909
(MIN)
Oth
0.370
0.370
0.655
0.440
0.645
0.370
0.400
0.370
1.000
0.580
0.515
0.530
0.370
0.710
0.710
In Case 1. MUI concentrations are calculated using detectable
TA8LE 6-11. 95X CONFIDENCE INTERVALS
IN PPBV FOR
MEAN CONFIDENCE INTERVALS
SITE LOWER L06NORMAL
COOE SOUND OtST NEAN
MLA 1.261 1.682
C4IL 1.983 2.406
CANJ 2.184 2.708
OLTX 1.626 1.944
FLFL 0.726 0.997
H1TX 1.368 1.723
NIFL 0.923 1.317
PEFL 1.245 1.865
S2NO 2.307 2.710
SAIL 1.491 1.911
W10C 1.859 2.231
W1« 1.844 2.354
W2DC 2.148 2.551
U2M 2.040 2.337
UPPER
SOUND
2.102
2.827
3.231
2.263
1.268
2.078
1.712
2.485
3.112
2.331
2.603
2.863
2.954
2.633
PCRCOITILK
25 th
1.095
0.825
1.225
1.410
1.155
0.530
0.835
0.660
1.135
1.490
0.810
1.255
1.255
1.355
1.460
(MEOIAM)
50th 75th
1.715 2.700
1.480 2.000
2.100 2.950
2.155 3.525
1.610 2.090
0.730 1.375
1.470 2.290
1.085 1.680
1.510 1.790
2.085 3.770
1.690 2.355
1.690 2.790
1.985 2.915
1.920 3.235
1.975 3.220
(MAX)
100th
8.765
7.490
6.950
8.425
4.025
3.645
4.140
5.125
4.130
8.765
6.920
5.625
6.200
7.030
6.030
tube concentrations only.
HEAN ACETONE CONCENTRATIONS: CASE 1*
MEDIAN
LOWER
BOUND
1.110
1.706
1.743
1.337
0.615
1.248
0.784
1.057
1.878
1.323
1.573
1.629
1.750
1.797
CONFIDENCE
MEDIAN
1.480
2.100
2.155
1.610
0.730
1.470
1.085
1.510.
2.085
1.690
1.690
1.985
1.920
1.975
INTERVALS
UPPER
SOUND
1.769
2.734
2.864 .
2.164
0.979
2.004
1.418
1.759
2.831
2.167
2.536
2.671
2.817
2.567














                 "in Case 1. mean concentrations are calculated using detectable
                  tub* concentrations only.

                                               6-9
-------
TABLE 8-12.   SUMMARY ARITHMETIC AND LOGNORNAL STATISTICS IN  Fft* FW MEM ACETONE CONCEXTRATIONS:  CASE 2*
SITE
CODE
ALL
MLA
C4IL
OUU
OLTX
FLFL
H1TX
NIFL
PEFL
S2MO
SAIL
U10C
W1KS
U2DC
W2KS
y^M.1 «I8T LOGNORMAL DIST WOiTllM
' 	 	 (MIN) (MEDIAN)
N MEAN STO MEAN STO Oth 25th 50th 75th
378 2.052 1.445 2.093 1.347 0.275 1.060 1.690 2.700
26 1.672 1.424 1.700 1.290 0.275 0.825 1.480 2.000
29 2.383 1.508 2.406 1.157 0.655 1.225 2.100 2.950
30 2.627 1.875 2.750 1.756 0.310 1.410 2.155 3.525
28 1.917 1.075 1.932 0.909 0.645 1.155 1.610 2.090
27 0.964 0.792 0.978 0.876 0.275 0.460 0.730 1.375
34 1.684 1.091 1.736 1.211 0.290 0.835 1.470 2.290
19 1.291 1.102 1.300 1.096 0.275 0.545 1.085 1.680
6 1.856 1.151 1.865 0.775 1.000 1.135 1.510 1.790
30 2.638 1.796 2.669 1.295 0.380 1.285 2.010 3.770
27 1.856 1.371 1.872 1.174 0.445 0.810 1.605 2.355
28 2.203 1.314 2.235 1.085 0.505 1.255 1.690 2.790
30 2.225 1.469 2.346 1.593 0.275 1.150 1.955 2.915
28 2.520 1.605 2.530 1.138 0.710 1.285 1.920 3.235
36 2.305 1.179 2.343 0.961 0.490 1.460 11975 3.220
In Case 2. Mean concentrations are calculated using 1/2 analytical detection 11*1t (AOL) for
concentrations below AOL.














TABLE 6-13. 95X CONFIDENCE INTERVALS IN PP8V FOR MEAN ACETONE CONCENTRATIONS: CASE 2'
MEAN CONFIDENCE INTERVALS MEDIAN CONFIDENCE INTERVALS
SITE LOUER LOG NORM UPPER LOUER UPPER
CODE SOUND DIST MEAN BOUND BOUND MEDIAN BOUND
MLA 1.204 1.700 2.196 1.084 1.480 1.766
C4IL 1.965 2.406 2.827 1.706 2.100 2.734
CANJ 2.121 2.750 3.378 1.701 2.155 2.863
OLTX 1.595 1.932 2.269 1.309 1.610 2.161
FLFL 0.648 0.978 1.309 0.597 0.730 1.062
H1TX 1.329 1.736 2.143 1.228 1.470 1.998
NIFL 0.806 1.300 1.794 0.721 1.085 1.459
PEFL 1.245 1.865 2.485 11057 1.510 1.759
S2NO 2.206 2.669 3.133 1.768 2.010 2.763
SAIL 1.429 1.872 2.315 1.248 1.605 2.086
U1DC 1.833 2.235 2.637 1.555 1.690 2.532
U1KS 1.776 2.346 2.916 1.567 1.955 2.628
U20C 2.108 2.530 2.951 1.713 1.920 2.802
W2KS 2.023 2.343 2.664 1.785 1.975 2.567
In Case 2. •MM concentrations are calculated using 1/2 analytical

(MAX)
100th
8.765
7.490
6.950
8.425
4.025
3.645
4.140
5.125
4.130
8.765
6.920
5.625
6.200
7.030
6.030
tube














                    detection Halt  (AOL)  for tube concentrations below AOL.
                                                6-10
-------
0
0
0
1
1 H
1
1 H
1
I
2
2 H
2
2
3
3
3
3
3
4
4
4
4
5
6
7
8
44455 555
66666 66667 77777
98888 88888 89999
00000 00000 00000
22222 22222 22222
44444 44444 44455
fiAAAfi AAAAA A/iAAA
88888 88888 88888
00000 00000 00011
22222 22223 33333
44444 44444 44444
66666 66677 77777
88888 89999 99
01111 111
22223 33
44445 5555
66667 7
38888 899
00011
2
455
56778 8
00001 23456 68899
35
03
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                               77777 7
                               99999 9999
                               00011 11111 1.1111 11111  1
                               22222 22333 33333 33333  33333 3
                               55555 55555 55555 555	
                               66666 66667 77777 77777  77777 77777
                               99999 99999 99999 99999  9
                               11111 11
                               3333
                               55555 55555 55555 5
                                    Formaldehyde  Concentrations,  ppbv

                                    Cases                             416
                                    Mean                                2.134
                                    Standard Deviation                 1.265
                                    Minimum              .              0.430
                                    Lower  Hinge (H) 25th percentile   1.265
                                    Median (M)  50th percentile        1.795
                                    Upper  Hinge (H) 75th percentile   2.573
                                    Maximum                            8.905
Figure 6-1.   Stem-and-leaf plot for all  formaldehyde concentrations.
                                      6-11
-------
             0
             0
             0
             0 H
             1
             1 M
             1
             1 H
             1
             2
             2
             2
             2
             2
             3
             4
             5
             7
3333
88888
00000
22222
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AJUUU
ooooo
00011
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5
7777

33449
44444 44SS5 55555 55555 55555 5
66666 66666 66667 77777 777T' 77777 77777 777
88888 88888 88888 88888 88999 99999 99999 99999 9999
OOOOO OOOOO OOOOO OOOOO 00001 11111 11111 11111 11111 111
22222 22222 22222 22222 22222 23333 33333 33333 3
44444 44555 55555 555	
66666 66666 66667 77777 77777 77777 77
88888 88899 99999 99
11111 111
                                       Ac«talti«hyd«  Concentrations/  ppbv

                                       Cases                                406
                                       Mean                                   1.372
                                       Standard Deviation                   0.811
                                       Minimum                               0.370
                                       Lower  Hinge  (H)  25th percentile    0.830
                                       Median (M) 50th percentile          1.205
                                       Upper  Hinge  (H)  75th percentile    1.710
                                       Maximum                               7.565
Figure 6-2.   Stea-and-leaf plot  for all  acetaldehyde  concentrations,
                                         6-12
-------
              0
              0
              0
              0
              1 H
              1
              1
              1 M
              1
              2
              2
              2
              2 H
              3
              3
              3
              3
              3
              3
              4
              4
              4
              4
              5
              6
              7
              8
33333
44444
66666
88888
00000
22222
45555
66677
OOOOO
22222
66666
88888
00000
22222
66777
88888
00000
22223
66666
•MM
ooooo
00001
22223
44455
77
55555 55555 55555 55
77777 77777 77777 77
88899 99999 9999
00111 11111 11111 111
22222 33333 33333 33333 33333 33
45555 55555
66666 66667 77777 77777 77
89999 99999 99999
11111 11111 1
33333
55555 55555

99999 99
66667
88888
ooooo
233
45
667
12567
00256
04
47
1
33
45555
777
999
0111
399
                                              Ac«ton«  concentrations,  ppbv

                                       Cases                                378
                                       Mean                                   2.078
                                       Standard Deviation       .            1.426
                                       Minimum                               0.370
                                       Lower  Hinge  (H) 25th percentile    1.095
                                       Median (M) 50th percentile          1.718
                                       Upper  Hinge  (H) 75th percentile    2.700
                                       Maximum                               8.765
Figure 6-3.   Sten-and-leaf plot  for all  acetone concentrations,
                                          6-13
-------
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     The top and bottom of the box are called hinges, and are located such
that the lower hinge represents the 25th percentile and the upper hinge
represents the 75th percentile.  The median is represented by a line that
splits the box into two pieces (not necessarily in the middle of the box) and
the mean is indicated by a plus (+).  The F-spread is defined as the
difference between the 75th and 25th percentiles.  "Whiskers" extend on either
side of the box where data exist to a distance of up to 1.5 times the
F-spread.  Data located between 1.5 and 3 times the F-spread are indicated by
a circle, while data values more extreme than 3 times the F-spread are
indicated by an asterisk (*).  Box plots are similar to stem-and-leaf plots in
visually presenting a frequency distribution.
     The box plots appear approximately symmetrical which further supports the
postulate that the data are lognormally distributed.
6.4  SEASONAL ITY
     Only a crude analysis can be made of aldehyde seasonality for this report
because several years' data are needed for an accurate representation, and the
aldehyde data set contain just one year's worth of data.  However, by plotting
monthly arithmetic mean concentrations by site and over all sites, and by
examining the results from several analysis of variance (ANOVA) models, the
1989 aldehyde data may be generally characterized.
     Figure 6-7 shows monthly overall average concentrations for formaldehyde,
acetaldehyde, and acetone at all sites in the 1989 UATMP.  Figures 6-8, 6-9,
and 6-10 display the monthly arithmetic means by site for the formaldehyde
data.  For most of the sites, concentration data were obtained in January 1989
and January 1990 (see Appendices B and C).  The January monthly averages
plotted in Figures 6-7 through 6-10 include averages from January 1989 and
January 1990.  Since there is considerable scatter in the total data set,
three plots are needed to minimize overlap between individual sites.  The
overall monthly means, are shown on all three plots (Figures 6-8, 6-9, and
6-10) and are displayed using the box symbol.  The data for site PEFL is not
plotted because of the few number of observations and resulting gaps between
months.
     The plots show a considerable variability between sites; however, some
patterns do emerge.  For Instance,  nearly all sites show a local minimum
concentration in March, and a local maximum concentration in October.  In most

lmo/111                              6-17
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cases these are absolute minima and maxima as well.   Most sites also tend to
reach other local maxima In January and also In July.  Other local  minima tend
to be found in September and November.
     Since two pairs of sites are located in the same city,  some additional
comments about Figure 6-10 may be made.  The monthly arithmetic means for the
two Wichita sites, W1KS and W2KS, track very closely for all 12 months.   The
two Washington, DC sites, W1DC and W2DC,  track rather closely throughout the
year as well, although some months show some separation.  Thus, a measure of
verification is provided for these two cities.
     Figures 6-11, 6-12, and 6-13 display the monthly arithmetic means by site
for the acetaldehyde data.  The acetaldehyde plots show a bit more variability
between sites than the formaldehyde data.  However,  there is still  a tendency
for local minima in March and local maxima in October.  As with formaldehyde,
these are usually absolute minima and maxima as well.  Other local  maxima and
minima occur more frequently and sporadically than with the formaldehyde data.
The two Wichita sites track closely from month-to-month, similarly to the
formaldehyde data.  There is one notable exception with the acetaldehyde data,
however.  There is a large difference between the Wichita sites in September.
The Washington, DC sites track rather closely as they did for formaldehyde,
but again not as closely as the Wichita sites.
     Figures 6-14, 6-15, and 6-16 display the monthly arithmetic means by site
for the acetone data.  The acetone plots show the best correspondence from
month-to-month between sites of the plots for the three compounds.   However,
acetone maxima and minima usually occur in different months.  The one
similarity between acetone and the other two compounds is for a local, and
usually absolute, maximum concentration in October.   The local minimum found
in July for acetone 1s 1n sharp contrast to the local maxima found in July for
formaldehyde and acetaldehyde.  The local maximum in April  is another acetone
contrast with the other two compounds.  Also in contrast to the other two
compounds, the two Washington, DC sites track more closely  than the two
Wichita sites, particularly in the second half of the year.
     The trends generalized from monthly plots of arithmetic means may or may
not be representative of a typical year.  However, it does  appear that the
time of year as described by month plays a fairly important role in
influencing aldehyde concentrations, as shown by the differences in the

lmo/111                              6-22
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monthly means  in  the  plots.  Also, aldehyde concentrations appear  to  be  site
specific  as  demonstrated  by  the differences between  sites in the plots.   To
test  the  role  of  site and month,  several ANOVA models were processed.
Table 6-14 lists  the  R2 and  p-values  for Case 1  from several ANOVA models that
also  tested  variables such as WEEKCLS  (day-of-week classification: weekday or
weekend)  and QUARTER  (JAN through MAR  - quarter  1, APR through JUN -  quarter
2,  etc.).  Case 2 results were similar; therefore, they are not shown.
      The  ANOVA results indicate that  all variables tested were significant at
the 95 percent confidence level,  as indicated by p-values less than 0.05,
except for WEEKCLS in the acetone models SITE-WEEKCLS and WEEKCLS.  However,
the amount of  variability "explained"  by the model variables was small,  as
shown by  R2  less  than 0.45 and usually less than 0.20.  For all three
compounds, the SITE-MONTH model was best overall.  However, the R2 for this
model  was less for acetaldehyde (0.26) than the  other two compounds  (0.38-
0.39). Even though R2 for the SITE-MONTH-WEEKCLS model were slightly larger
for each  compound,  the slight increase in  the amount of "explained"
variability  does  not  justify the  addition  of another variable.  Thus, the
plots of  monthly  arithmetic  means and  the  ANOVA  results indicate that site and
month are two  important influences, along  with other unspecified and  unknown
factors,  on  carbonyl  concentrations.
6.5  INTERALDEHYDE CORRELATIONS
      Table 6-15 lists the product-moment correlations and the covariances
between the  mean  concentrations of formaldehyde, acetaldehyde, and acetone for
each  site and  over all  sites for  Case  1.   Differences between Case 1  and
Case  2 were  minimal,  so only Case 1 results are  shown.  Formaldehyde  and
.acetaldehyde appear more  highly correlated than  either formaldehyde  and
acetone or acetaldehyde and  acetone.
      Figure  6-17  shows the correlation between formaldehyde and acetaldehyde
concentrations, while Figure 6-18 shows the correlation between formaldehyde
and acetone  concentrations.  The  correlation coefficient  for the formaldehyde-
acetaldehyde concentration data is 0.8088, whereas for the formaldehyde-
acetone data the  correlation coefficient is 0.3089.  The line drawn in each
graph locates  the regression line. The data used for Figures 6-17  and 6-18
include each analysis,  I.e.  for Tube  1 and Tube  2, for each sampling  episode
in  which  the paired data  was available.  The acetone-acetaldehyde  relationship
was not explored.

lmo/111                               6-29
-------
                 TABLE 6-14.  ANOVA MODELS WITH CORRESPONDING R2S AND P-VALUES FOR CASE 1*
MODEL INDEPENDENT
VARIABLES
SITE MONTH WEEKCLS
SITE MONTH
SITE QUARTER
SITE WEEKCLS
SITE
MONTH WEEKCLS
MONTH
QUARTER
WEEKCLS

R2
.43
.39
.33
.30
.27
.14
.11
.05
.03
FORMALDEHYDE
P-VALUES
.0001, .0001, .0001
.0001, .0001
.0001, .0001
.0001, .0001
.0001
.0001, .0001
.0001
.0001
.0007

R2
.28
.26
.17
.15
.13
.15
.12
.04
.01
ACETALOEHYOE
P-VALUES
.0001, .0001, .0004
.0001, .0001
.0001, .0005
.0001, .0070
.0001
.0001, .0013.
.0001
.0016
.0136

R2
.39
.38
.16
.12
.11
.26
.25
.05
.01
ACETONE
P-VALUES
.0001, .0001, .0058
.0001, .0001
.0001, .0001
.0001, .oanb
.0001
.0001. .0198
.0001
.0001
.1311b
 In case  1, mean conctntration*  arc calculated using detectable tube concentration* only.   Formaldehyde,
 acetaldehyde, and acetone concentrations are the dependent variable* in the ANOVA's.

bindicates p-value is not significant at the 95X confidence level.

NOTES:  QUARTERS are defined as follows:

          quarter 1 • JAN  - MAR
          quarter 2 « APR  - JUN
          quarter 3 » JUL  - SEP
          quarter 4 » OCT  - DEC

        WEEKCLS  indicates day-of-week classification: weekday or weekend.
                                                 6-30
-------
 TABLE 6-15.
CORRELATION (COR) AND COVARIANCE (COV)  OF
MEAN CONCENTRATIONS BY SITES FOR CASE 1*
SITE
CODE
ALL
BRLA
C4IL
CANJ
DLTX
FLFL
H1TX
MIFL
PEFL
S2MO
SAIL
W10C
W1KS
W2DC
W2KS
FORMALDEHYDE
VERSUS
ACETALDEHYDE
N
370
25
26
30
28
27
34
18
6
30
27
28
28
28
34
COR
0.82
0.55
0.92
0.91
0.85
0.84
0.68
0.94
- 0.64b
0.79
0.86
0.89
0.86
0.93
0.74
COV
0.88
0.13
0.96
1.36
0.31
0.72
0.98
0.55
0.10
0.60
0.33
1.28
0.41
1.63
0.27
FORMALDEHYDE
VERSUS
ACETONE
COR
0.40
-0.01b
0.56
0.65
0.256
0.48
0.35
0.45b
-0.15b
0.44
0.40
0.44
0.24b
0.60
0.10b
COV
0.72
-0.01
1.07
1.78
0.21
0.44
0.44
0.41
-0.09
0.84
0.38
0.93
.31
1.55
.07
ACETALDEHYDE
VERSUS
ACETONE
COR
0.43
0.19b
0.69
0.69
0.16b
0.42
0.34
0.52
-0.08b
0.52
0.60
0.60
0.36b
0.71
-0.01b
COV
0.51
0.12
0.90
1.28
0.08
0.22
0.46
0.38
-0.03
0.63
0.44
0.69
0.28
1.20
-0.01
aln Case 1, mean concentrations are calculated using
 detectable tube concentrations only.

 Indicates correlation not significant at the 95% confidence
 level.
                           6-31
-------
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6.6  PRECISION AND PERCENT DIFFERENCES
     Tables 6-16, 6--17, and 6-18 list the summary statistics by site and over
all sites for the absolute percent difference and for the absolute standard
deviation of the tube concentration data.  Since the absolute percent
difference and the absolute standard deviation were calculated only when both
tube concentrations were above the ADL,  only results from Case 1 are shown.
The absolute percent DIP, a measure of variability, is defined as the absolute
value of the difference between the two tube concentrations, divided by the
arithmetic average of the two tube concentrations, times 100:
      Absolute percent DIF -  ABS (X2 - XjJ/UXg + Xj)/2) x 100
where:         ABS indicates the absolute value;
               Xj » concentration from tube 1; and
               %2 • concentration from tube 2.
     Precision was estimated from absolute percent difference of duplicate
sample analysis. For formaldehyde the absolute percent difference averaged
11.8; for acetaldehyde 14.5; and for acetone 16.7.
     The maximum of any of the percent differences derived from the pairs of
tube concentrations was 40 percent or less for six formaldehyde sites, four
acetaldehyde sites, and four acetone sites.  The maximum percent difference
was larger than 100 percent for only one formaldehyde site and one acetone
site.  The largest percent difference for any of the acetaldehyde sites was
near 81 percent.  These results show good precision, and speak well for the
sampling and analytical procedures.
     The mean standard deviation over all sites was near 0.16 for
formaldehyde, near 0.13 for acetaldehyde, and near 0.21 for acetone.  At
individual sites the mean standard deviations ranged roughly from 0.11 to 0.28
for formaldehyde, from 0.10 to 0.19 for acetaldehyde, and from 0.13 to 0.29
for acetone.  Maximum standard deviations were below 0.7 for all acetaldehyde
sites.  However, the maximum standard deviations were above 1.0 for two
formaldehyde sites and for four acetone sites.  Nevertheless, like the percent
differences, the standard deviations also demonstrate that the precision of
the aldehyde concentration measurements was good.
     Figures 6-19 through 6-24 show the precision as a function of composition
for formaldehyde, acetaldehyde, and acetone. For each compound, concentration
differences, and absolute percent differences are plotted against average
sample concentration.  The graphs show that no trends are apparent relating

Into/Ill                              6-34
-------
TABLE 6-16.   SUMMRY OF  FORMALDEHYDE ABS PERCENT DIFFERENCES (DIF)  AND  STANDARD DEVIATIONS (STD) FOR CASE 1
SITE
CODE
ALL
BRLA
C4IL
CANJ
DLTX
FLFL
H1TX
MIFL
P€FL
S2MO
SAIL
U1DC
W1KS
W20C
U2KS
a
In CM* 1,
TABLE 6-17.
SITE
CODE
ALL
BRLA
C4IL
CANJ
OLTX
FLFL
H1TX
MIFL
PEFL
saw
SAIL
U1DC
U1KS
U2DC
U2KS

OIF
405
30
30
30
29
32
38
31
6
28
30
28
29
29
35
M
STD
405
30
30
30
29
32
38
31
6
28
30
28
29
29
35
MEAN
DIF
11.779
10.170
13.474
8.421
12.633
9.796
9.067
9.874
19.359
8.466
16.533
7.945
14.808
13.878
16.422
Men concentrations art
SUMMARY OF

OIF
386
30
26
31
29
30
38
29
7
26
26
28
26
29
31
N
STD
386
30
26
31
29
30
38
29
7
26
26
28
26
29
31
ACET ALDEHYDE
STO
0.155
0.115
0.157
0.118
0.179
0.137
0.130
0.110
0.212
0.136
0.141
0.210
0.149
0.282
0.153
STD
DIF
13.180
12.256
27.120
10.934
8.090
8.686
3.614
8.304
19.990
7.767
14.942
4.951
10.085
14.651
15.800
MINIMUM VALUE
STD
0.170
0.143
0.325
0.118
0.127
0.115
0.127
0.093
0.208
0.126
0.123
0.177
0.117
0.278
0.142
calculated using detectable tub*
ABS PERCENT
MEAN
OIF
14.469
13.474
11.241
12.181
12.960
16.238
9.951
13.557
14.851
10.380
19.221
14.331
19.392
19.343
17.313
STO
0.130
0.112
0.109
0.122
0.123
0.130
0.126
0.104
0.124
0.117
0.125
0.175
0.134
0.188
0.130
DIFFERENCES
STO
OIF
13.612
11.702
9.827
11.524
8.304
16.444
3.650
15.488
3.398
10.917
16.913
13.011
16.034
17.961
15.388
DIF
0.000
0.573
0.000
0.000
0.517
0.282
0.394
0.317
5.505
0.000
0.664
1.105
0.717
0.367
0.631
STD
0.000
0.007
0.000
0.000
0.007
0.007
0.007
0.007
0.064
0.000
0.007
0.028
0.007
0.007
0.007
MAXIMUM VALUE
DIF
150.442
62.651
150.442
55.556
34.758
34.146
36.559
34.361
57.516
35.052
48.062
19.929
43.750
74.409
77.966
STD
1.803
0.735
1.303
0.601
0.516
0.396
0.587
0.368
0.622
0.601
0.502
0.792
0.495
1.223
0.651
concentrations only.
(OIF) AND STANDARD
DEVIATIONS
MINIMUM VALUE
STD
0.121
0.092
0.106
0.111
0.090
0.122
0.132
0.115
0.082
0.134
0.107
0.151
0.111
0.165
0.118
OIF
0.000
0.000
0.000
0.000
1.093
0.000
0.000
0.000
6.020
0.000
0.000
0.000
0.000
0.000
0.922
STO
0.000
0.000
0.000
0.000
0.014
0.000
0.000
0.000
0.057
0.000
0.000
0.000
0.000
0.000
0.007
(STD) FOR
CASE 1
MAXIMUM VALUE
OIF
81.481
43.478
33.526
58.128
30.252
81.481
28.205
74.872
27.386
43.000
60.000
50.323
65.625
60.870
62.774
STD
0.686
0.389
0.410
0.417
0.311
0.544
0.686
0.516
0.240
0.608
0.424
0.580
0.445
0.651
0.424
 in Case 1,
concentrations are calculated using detectable tube concentration* only.
                                                    6-35
-------
 TABU 6-18.  SUMMARY OF ACETONE ABS  PERCENT DIFFERENCES (OIF) AND STANDARD DEVIATIONS (STD) FOR CASE l'
SITE
CODE
ALL
BRLA
C4IL
CANJ
OLTX
FLFL
H1TX
MIFL
PEFL
S2MO
SAIL
W1DC
U1KS
U2DC
U2KS
M
DIF
346
23
29
26
27
21
31
15
6
27
25
27
27
27
35
MEAN
STD
346
23
29
26
27
21
31
15
6
27
25
27
27
27
35
OIF
16.674
11.205
18.320
10.676
22.397
20.637
19.219
17.246
27.638
9.256
19.243
19.008
12.124
20.357
14.941
STD
0.212
0.134
0.241
0.175
0.255
0.190
0.216
0.159
0.256
0.164
0.237
0.277
0.169
0.291
0.201
STD
DIF
16.725
6.523
24.338
13.780
17.656
13.551
15.714
18.246
31.560
5.169
15.956
15.546
11.507
24.308
14.189
STD
0.215
0.109
0.277
0.212
0.162
0.217
0.203
0.134
0.236
0.109
0.198
0.304
0.207
0.301
0.180
MINIMUM VALUE
DIF
0.000
1.342
0.000
0.000
1.047
2.182
0.000
1.729
0.969
2.091
0.000
0.738
0.651
0.364
0.654
STD
0.000
0.014
0.000
0.000
0.007
0.014
0.000
0.021
0.028
0.028
0.000
0.007
0.007
0.007
0.014
MAXIMUM
DIF
126.531
27.879
126.531
63.573
75.362
39.831
55.238
69.281
86.000
19.512
57.988
58.575
40.000
92.237
64.151
VALUE
STD
1.492
0.523
1.096
0.969
0.530
0.799
0.919
0.417
0.608
0.523
0.728
1.492
1.047
1.273
0.806
In CM*  1, wan concentrations are calculated using detectable tube concentrations only.
                                                    6-36
-------
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-------
concentration differences to average concentration.  When absolute percent
differences are used-as the dependent variables, more variability Is seen at
lower concentrations as expected.
6.7  AUDIT SAMPLES
     Table 6-19 displays the results from the audit samples for formaldehyde,
acetaldehyde, and acetone.  Figure 6-25 displays bar charts for the percent
differences between the spiked and reported samples for formaldehyde,
acetaldehyde, and acetone.  A positive bias is evident for all three compounds
in both Table 6-19 and Figure 6-25.  This positive bias was over twice as much
for acetaldehyde as it was for formaldehyde.  The bias for acetone was four
times as much for acetone as it was for formaldehyde.  However, there were
only five values reported for the acetone audit samples versus 14 for
formaldehyde and 13 for acetaldehyde.  Acetone was included in the audit
samples, but acetone audit results were not always reported.
     The biases for all three compounds are relatively small and speak well
for the analytical procedures.  This further supports the precision data
presented in Section 6.6.  The audit results are well within the program data
quality objectives as stated in the project Quality Assurance Program Plan.6
lmo/111                              6-43
-------
           Table 6-19.   Spiked OA Cartridge Results for  1969 UATMP Aldehyde Monitoring
Formaldehyde
Sample Mo.
1913
1937
1866
2047
1846
1929
2030
2038
2042
1852
2012
1993
2018
2006
Spiktd
3.67
3.67
0.92
0.92
2.35
0.88
5.29
1.76
1.76
2.12
3.67
3.53
2.58
0.92
((•ported
4.33
3.47
0.87
1.08
2.06
1.03
5.04
1.93
1.91
2.18
4.09
3.63
2.57
1.18
X Oiff
18.00
•5.40
-5.40
17.00
•12.00
17.00
-4.70
9.70
8.50
2.80
11.00
2.80
•0.40
28.00
Acetaldefcyde
Spiked
3.41
3.41
0.85
0.85
0.88
1.41
4.39
0.66
0.66
1.94
3.41
2.82
3.96
0.85
Reported
3.81
2.92
1.07
1.23
1.34
1.57
2.74
<0.42
0.90
1.95
3.74
3.01
3.72
1.18
X Oiff
12.00
•14.00
26.00
45.00
52.00
11.00
-38.00
-
36.00
0.50
9.70
6.70
-6.10
39.00
Acetone
Spiked Reported X Oiff
.
.
.
.
4.20 4.90 17.00
1.05 1.44 37.00
3.68 4.31 17.00
3.16 3.55 12.00
3.16 4.53 43.00
.
.
.
.
-
Average*
                                6.207
13.831
25.200
                                             6-44
-------
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                                   6-45
-------
-------
                               7.0 CONCLUSIONS

     Based on the discussion In the data analysis section,  the following
conclusions were reached:
     1)   The mean concentration data for all  three compounds are more nearly
          lognormally than normally distributed.
     2)   Mean concentrations varied from month-to-month for all  three
          compounds, but the variation of acetone concentrations was somewhat
          different than the variation of formaldehyde or acetaldehyde
          concentrations.   This variation did  not appear to be represented by
          regular cycles.   In addition, the monthly concentrations also
          appeared to be site specific, particularly for acetaldehyde.
          Concentrations at nearly all sites for all three compounds reached a
          maximum level in the month of October.   Analysis of variance results
          Indicated that both site and month played a role in influencing mean
          concentrations for all  three compounds; however,  other unknown
          factors appear to have an even greater influence.
     3)   Formaldehyde concentrations were fairly highly correlated with
          acetaldehyde concentrations at all sites.  However, neither
          formaldehyde nor acetaldehyde concentrations were well  correlated
          with acetone concentrations.  In fact,  the correlation coefficients
          of formaldehyde and acetaldehyde concentrations with acetone
          concentrations were non-significant  at some sites.
     4)   Absolute percent differences, absolute standard deviations, and
          audit samples biases revealed that the sampling and analytical
          methodology employed is repeatable and valid.
lmo/111                               7-1
-------
-------
                                8.0 REFERENCES


1.   McAllister, Robert A., Wendy H. Moore, Joann Rice, Dave-Paul Dayton,
     Robert f. Jongleux, Raymond G. Merrill, Jr. and Joan Bursey, "1989 Urban
     A1r Toxics Monitoring Program" Final Report prepared for Nell J. Berg,
     Jr., U.S. Environmental Protection Agency, Research Triangle Park, NC,
     Radian Corporation DCN: 90-262-045-93, Research Triangle Park, NC,
     April 1, 1990.

2.   McAllister, Robert A., Bradley, W. Nelson, Wendy H. Moore, Dave-Paul
     Dayton, Joann Rice, Robert F. Jongleux, Raymond G. Merrill, Jr., Joan T.
     Bursey, and Phyllis L. O'Hara, "1989 Nonmethane Organic Compound and
     Three-Hour A1r Toxics Monitoring Program," Final Report, prepared for
     Neil J. Berg, Jr.; U.S. Environmental Protection Agency, Research
     Triangle Park, NC, Radian Corporation DCN: 89-262-045-89, Research
     Triangle Park, NC, February 16, 1990.

3.   SAS* Institute Inc.,  "SAS*  Procedures  Guide,  Release  6.03  Edition,"  Cary,
     NC (1988).

4,   Aitchison, J. and J.  A. C. Brown, "The Lognormal Distribution," Cambridge
     at the University Press (1957).

5.   Hoaglin, D. C., F. Mosteller, and J. U. Tukey, "Understanding Robust and
     Exploratory Data Analysis," John Wiley & Sons, New York, NY (1983).

6.   Radian Corporation, "1989 Urban Air Toxics Monitoring Program.  Work Plan
     and Quality Assurance Project Plan," prepared for Office of Air Quality
     Planning and Standards, U.S. Environmental Protection Agency, Research
     Triangle Park, NC, Radian Corporation DCN No. 82-262-045-68, Research
     Triangle Park, NC.
lmo/111                               8-1
-------
-------
Appendix A - Site Information from AIRS
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-------
Appendix C - Analytical Data Listing
               C-l
-------
-------
                        TABLE C-1.  LISTING OF TUBE 1 AND TUBE 2  CQNC  (ppbv)  AMD PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
16JAN89
31JAN89
09FEB89
21FEB89
05MAR89
17MAR89
31MAR89
10APR89
22APR89
10MAY89
16MAY89
09JUN89
21JUN89
03JUL89
15JUL89
27JUL89
08AUG89
20AUG89
01SEP89
13SEP89
25SEP89
070CT89
190CT89
310CT89
12NOV89
24NOV89
06DEC89
170EC89
300EC89
11JAN90
23JAN90
WEEK
DAY
2
3
5
3
1
6
6
2
7
4
3
6
4
2
^ 7
5
3
1
6
4
2
7
5
3
1
6
4
1
7
5
3
ID
NO.
0666
0678
06910
0708
0719
0733
0755
0766
0783
0806
08170
0846
0865
0877
0891
0907
09240
09390
0951
0968
0981
1000
1014
1029
10500
1064
1085
1099
1115
1130
1151
LOT
30
14
30
30
30
30
30
32
32
32
32
35
35
35
35
39
39
39
39
39
39
25
42
42
42
42
11
11
11
46
46
CONC
TUBE1
1.69
3.59
1.11
0.90
-999
1.43
1.21
1.32
1.67
1.45
1.14
1.99
1.74
1.82
1.11
1.64
1.73
1.61
1.95
1.49
1.29
1.79
0.64
1.90
2.18
1.18
2.24
1.16
0.86
2.09
1.70
SITECODE»BRLA
ACETALDEHYDE
(ppbv) PURITY
TUBE2
1.57
3.23
1.09
0.95
0.43
1.48
1.25
1.36
1.73
1.24
1.42
2.12
1.75
1.70
1.13
1.73
1.49
1.45
2.00
1.62
1.27
1.55
0.69
2.16
1.14
1.57
2.13
1.20
0.84
1.94
1.30
TUBE1
0.862
0.958
0.961
0.918
0.902
0.939
0.945
0.996
1.000
0.998
1.000
0.995
0.994
0.998
0.999
0.997
0.985
0.998
0.999
0.998'
0.995
0.999
0.991
0.997
0.997
0.999
0.984
0.929
0.997
1.000
0.979
TUBE2
0.856
0.956
0.956
0.922
0.842
0.933
0.867
0.978
0.999
0.998
0.997
0.999
0.994
0.999
0.989
1.000
0.999
0.998
0.997
0.999
0.999
0.992
0.981
0.996
0.999
0.998
0.942
0.958
0.996
0.999
0.998
CONC (ppbv)
TUBE1
1.07
1.70
0.68
0.80
•999
0.78
1.05
0.76
1.33
1.01
1.09
1.29
1.14
1.24
0.69
2.26
1.34
2.12
0.58
1.48
1.04
1.97
0.41
1.66
1.74
0.74
1.78
0.99
1.21
1.67
1.16
TUBE2
1.02
1.78
0.67
0.74
-999
0.74
1.10
0.60
1.48
0.94
0.92
1.62
1.19
1.52
1.03
2.19
1.12
2.00
0."79
1.51
1.48
2.04
0.41
1.54
1.59
0.83
1.60
1.54
0.95
1.87
1.35
PURITY
TUBE1
0.952
0.977
0.909
0.948
0.814
0.979
0.971
0.977
0.979
0.997
0.984
0.992
0.978
0.984
0.986
0.998
0.999
0.992
0.956
0.983
0.996
0.981
0.975
0.966
0.892
0.959
0.980
0.994
0.983
0.999
0.988
TUBE2
0.906
0.992
0.900
0.977
0.809
0.982
0.930
0.973
0.990
0.987
0.974
0.993
0.998
0.994
0.918
0.996
0.985
0.999
0.970
0.996
0.963
0.985
0.924
0.977
0.978
0.984
0.989
0.969
0.995
0.991
0.987
ACETONE
CONC (ppbv)
TUBE1
1.32
0.75
0.88
1.23
0.89
-999
1.34
1.90
7.12
2.52
-999
1.47
0.81
0.53
-999
0.36
2.22
0.73
0.37
0.94
1.86
2.10
1.63
1.90
3.76
1.86
-999
-999
-999
2.56
1.69
TUBE2
1.30
0.90
0.92
1.37
0.84
0.50
1.62
1.66
7.86
2.38
-999
1.79
0.91
0.63
-999
0.49
2.25
0.82
-999
0.71
2.14
2.35
1.70
1.70
3.43
1.57
-999
0.53
-999
2.38
1.79
PURITY
TUBE1
0.872
0.729
0.946
0.823
0.817
0.645
0.739
0.921
0.971
0.813
0.667
0.804
0.667
0.667
0.667
0.811
0.818
0.800
0.790
0.667
0.817
0.818
0.810
0.668
0.815
0.861
0.710
0.935
0.862
0.482
0.925
TUBE2
0.943
0.905
0.899
0.895
0.770
0.667
0.768
0.918
0.974
0.815
0.667
0.818
0.667
0.667
0.667
0.667
0.816
0.667
0.785
0.794
0.817
0.489
0.933
0.878
0.810
0.912
0.791
0.493
0.728
0.932
0.516
"-999" indicate* concentration below analytical detection limit (ADD.
".* indicates invalidated data.
                                                        C-2
-------
                        TABLE C-2.  LISTING OF TUBE 1  AND TUBE  2   CONC  (ppbv)  AND  PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
22JAN89
06FEB89
15FEB89
27FEB89
17MAR89
23MAR89
29MAR89
04APR89
16APR89
28APR89
10MAY09
22MAY89
03JUN89
16JUN89
21JUN89
27JUN89
09JUL89
02AUG89
14AUG89
26AUC89
07SEP89
21SEP89
010CT89
130CT89
250CT89
30MOV89
130EC89
24DEC89
05JAM90
17JAM90
WEEK ID
DAY NO.
1
2
4
2
6
5
4
3
1
6
4
2
7
6
4
3
1
4
2
7
5
5
1
6
4
5
4
1
6
4
0673
0688
0698
07140
07350
0743
0752
0757
0782
0794
0811
0827
08450
0860
0902
0869
0890
0911
0935
09500
0964
0984
0995
1012
1031
10810
1104
1120
1140
1155
LOT
15
30
30
30
30
30
30
30
32
32
32
32
35
35
35
35
35
39
39
39
39
39
39
42
42
42
42
11
46
46
CONC
TUBE1
0.75
2.35
4.83
1.33
0.76
2.45
1.61
0.46
1.20
3.30
1.01
3.13
1.15
0.54
0.42
2.88
1.58
3.15
2.55
2.58
1.97
2.68
1.86
6.52
1.92
1.96
2.55
1.09
1.73
0.99

TUBE2
0.59
2.50
4.23
1.26
0.83
2.30
1.53
0.57
1.04
2.98
0.94
3.21
1.09
0.48
2.97
2.87
1.64
3.32
2.55
2.81
1.74
2.46
1.96
6.52
2.03
1.98
2.46
1.18
1.57
1.49
SITECODE*C4IL
ACETALDEHYDE
PURITY
TUBE1
0.931
0.941
0.959
0.977
0.914
0.939
0.940
0.898
0.996
0.999
0.982
0.998
0.992
0.998
0.994
0.993
0.997
1.000
0.998
0.998
0.999
0.999
1.000
1.000
0.998
0.983
0.994
0.966
0.996
0.995
TUBE2
0.867
0.936
0.957
0.969
0.918
0.934
0.933
0.893
0.998
0.999
0.993
0.999
0.989
0.997
1.000
1.000
0.996
0.998
0.999
1.000
0.998
0.999
0.999
1.000
0.999
0.997
0.996
0.998
0.971
0.961
CONC (ppbv)
TUBE1
0.40
1.18
1.88
0.47
-999
1.14
0.53
-999
0.79
1.87
0.37
2.03
0.54
0.30
-999
1.71
0.93
1.78
1.67
1.84
1.32
1.89
2.02
4.81
1.13
1.19
1.83
1.11
0.99
0.74
TUBE2
0.38
1.18
1.68
0.48
-999
1.24
0.51
•999
0.82
1.94
0.49
2.09
0.74
-999
0.39
1.86
0.94
1.98
1".95
2.25
1.19
1.87
1.44
4.34
1.27
1.18
1.59
0.97
1.12
0.99
PURITY
TUBE1
0.808
0.960
0.972
0.800
0.925
0.966
0.798
0.814
0.989
0.988
0.937
0.993
0.978
0.987
0.798
0.793
0.995
0.994
0.991
0.978
0.996
0.968
0.991
0.983
0.984
0.907
0.954
0.916
0.978
0.942
TUBE2
0.920
0.977
0.961
0.795
0.924
0.950
0.808
0.814
0.956
0.991
0.946
0.992
0.992
0.894
0.982
0.991
0.974
0.995
0.972
0.988
1.000
0.995
0.977
0.998
1.000
0.942
0.999
0.947
0.911
0.976
ACETONE
CONC (ppbv)
TUBE1
1.32
1.19
2.00
0.77
1.04
1.01
1.30
1.10
1.19
2.83
2.36
4.52
1.27
3.01
-999
1.86
0.47
4.47
2.99
2.76
2.20
3.18
2.86
7.69
3.01
1.92
2.90
0.98
6.04
3.06
TUBE2
1.25
1.45
0.45
0.54
1.00
1.33
1.42
1.23
1.13
2.40
2.68
4.11
1.47
2.62
-999
2.32
0.84
3.33
2.87
3.04
2.00
2.72
3.10
6.21
2.94
1.89
2.90
0.69
6.08
2.89
JHITY
TUBE1
0.337
0.984
0.992
0.729
0.888
0.922
0.872
0.819
0.993
0.991
0.932
0.974
0.780
0.907
0.000
0.923
0.667
0.932
0.925
0.817
0.817
0.808
0.487
0.982
0.816
0.951
0.989
0.981
0.566
0.879
TUBE2
0.886
0.986
0.984
0.756
0.880
0.956
0.863
0.816
0.915
0.991
0.979
0.988
0.816
0.917
0.000
0.888
0.667
0.932
0.923
0.815
0.817
0.935
0.927
0.985
0.923
0.907
0.532
0.978
0.991
0.883
"-999" indicate concentration below analytical detection limit (AOL).
»." indicates invalidated data.
                                                     .   C-3
-------
                        TABLE C-3.  LISTING OF TUBE 1  AND  TUBE 2  CONC (ppbv)  AND PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
22JAN89
03FEB89
15FEB89
27FEB89
11MAR89
23MAR89
04APR89
16APR89
28APR89
10MAY89
22MAY89
03JUM89
15JUH89
27JUN89
09JUL89
21JUL89
02AU689
14AUG89
26AUG89
07SEP89
19SEP89
010CT89
130CT89
250CT89
06NOV89
18NOV89
30NOV89
12DEC89
240EC89
05JAN90
17JAN90
29JAN90
WEEK 10
DAY NO.
1
6
4
2
7
5
3
1
6
4
2
7
5
3
1
6
4
2
7
5
3
1
6
4
2
7
5
3
1
6
4
2
0672
0685
0696
0710
07300
0742
0760
0777
0793
0808
0822
0843
0852
08740
0888
0900
0916
0926
0948
09590
0971
0989
1005
1028
1042
1056
1076
1096
11080
1128
1144
1153
LOT
15
30
30
30
30
30
30
32
32
32
32
32
35
35
35
35
39
39
39
39
39
39
42
42
42
42
42
11
11
11
46
46
CONC
TUBE1
3.98
2.36
3.65
2.21
2.21
0.45
1.21
2.37
1.77
0.92
2.49
1.38
1.58
1.76
.
1.23
1.54
2.28
1.82
2.01
1.73
1.11
5.04
7.08
2.80
1.98
1.84
4.68
2.68
2.89
5.14
0.96
SITECOOE=CANJ
ACETALDEHYOE
(ppbv) PURITY
TUBE2
4.19
2.20
3.85
2.41
2.12
-999
1.56
2.17
1.44
0.52
2.52
1.47
1.73
1.76
1.98
1.13
1.69
2.38
1.81
2.11
1.72
0.90
5.89
6.93
2.78
1.93
1.92
4.93
2.57
2.63
5.01
0.96
TUBE1
0.957
0.959
0.959
0.941
0.915
0.890
0.924
0.998
0.988
0.961
0.997
0.999
0.999
1.000
.
0.999
1.000
0.997
0.999
0.998
1.000
0.990
0.995
1.000
0.998
0.995
0.999
0.998
0.993
0.991
0.990
0.989
TUBE2
0.951
0.955
0.952
0.948
0.909
0.894
0.911
0.996
0.998
0.993
0.995
0.999
0.997
0.999
0.998
0.999
0.997
0.996
0.998
0.998
0.996
0.977
0.998
0.999
0.999
0.998
0.993
0.998
0.955
0.985
0.996
0.888
CONC (ppbv)
TUBE1
2.18
1.40
2.01
0.97
1.60
0.44
0.84
1.28
0.84
0.46
2.28
0.93
0.96
1.44
.
1.00
2.10
1.86
1.30
1.78
1.07
0.75
4.18
4.63
1.76
1.12
0.89
3.19
1.45
2.07
2.57
1.31
TUBE2
2.19
1.15
2.24
1.05
1.63
0.55
0.79
1.24
0.69
0.42
2.02
0.86
0.92
1.66
1.43
1.04
2.68
1.68
1.30
1.52
0.87
0.73
4.64
4.54
1.86
0.94
1.00
3.01
1.06
1.79
2.46
0.72
PURITY
TU8E1
0.982
0.977
0.979
0.942
0.946
0.811
0.916
0.994
0.992
0.989
0.997
0.999
0.992
0.993
.
0.994
0.995
0.985
0.971
0.981
0.998
0.964
0.985
0.994
0.982
0.965
0.934
0.945
0.924
0.950
0.957
0.948
TUBE2
0.977
0.959
0.974
0.944
0.957
0.814
0.991
0.989
0.984
0.986
0.994
0.991
0.995
0.993
0.994
1.000
0.996
0.996
0.986
0.998
0.940
0.901
0.998
0.997
0.975
0.985
0.983
0.990
0.993
0.957
0.924
0.813
ACETONE
CONC (ppbv)
TUBE1
1.82
0.44
1.67
1.39
2.06
1.04
0.92
3.22
3.79
2.92
4.07
4.36
1.32
-999
.
0.61
2.65
2.39
3.72
4.99
1.41
2.25
6.53
8.35
2.72
0.72
2.43
2.84
2.57
-999
5.66
-999
TUBE2
1.64
-999
2.03
1.43
2.18
1.01
0.92
2.69
3.26
2.85
4.15
4.33
1.28
0.98
1.72
0.78
2.75
1.93
3.65
4.51
1.45
2.31
6.55
8.50
2.46
-999
1.84
1.47
2.05
-999
5.80
-999
PURITY
TUBE1
0.946
0.973
0.979
0.983
0.971
0.901
0.799
0.970
0.984
0.905
0.984
0.976
0.773
0.000
.
0.667
0.814
0.816
0.884
0.966
0.915
0.879
0.532
0.980
0.891
0.961
0.678
0.482
0.982
0.507
0.985
0.920
TUBE2
0.988
0.945
0.985
0.983
0.954
0.917
0.796
0.983
0.993
0.905
0.985
0.977
0.818
0.667
0.809
0.667
0.815
0.816
0.930
0.928
0.814
0.925
0.951
0.624
0.905
0.962
0.963
0.957
0.967
0.964
0.971
0.847
"-999" indicates concentration below analytical detection limit  (ADD.
"." indicates invalidated data.
                                                       C-4
-------
                        TABLE C-4.   LISTING OF TUBE 1 AND TUBE 2  CCNC (ppbv)  AND PURITY  DATA
FORMALDEHYDE
SAMPLE
DATE
16JAN89
28JAN89
09FEB89
21FEB89
05MAR89
17MAR89
29MAR89
10APR89
22APR89
04MAY89
16MAY89
28MAY89
09JUN89
21JUN89
1SJUL89
27JUL89
08AU689
20AUG89
01SEP89
13SEP89
25SEP89
070CT89
190CT89
310CT89
12NOV89
24NOV89
06DEC89
18DEC89
300EC89
11JAN90
23JAN90
WEEK ID
DAY NO.
2
7
5
3
1
6
4
2
7
5
3
1
6
4
7
5
3
1
6
4
2
7
5
3
1
6
4
2
7
5
3
0664
0677
0693
0707
0723
0738
0754
0770
0789
0802
0818
0834
08500
08640
0895
0908
0922
0940
0954
09660
0980
1001
1020
1034
1052
1068
1086
1106
11180
11350
11490
CONC (ppbv)
LOT
30
14
30
30
30
30
30
32
32
32
32
32
35
35
35
39
39
39
39
39
39
42
42
42
42
42
11
11
11
46
46
TUBE1
3.34
1.24
2.71
1.38
0.56
1.61
2.66
1.31
1.31
1.48
2.06
1.94
2.38
2.07
1.77
1.55
1.98
2.23
2.55
2.52
2.57
-999
-999
5.14
1.84
1.57
1.26
3.09
1.15
1.79
2.70
TUBE2
3.10
1.28
3.08
1.76
0.69
1.64
2.12
1.61
1.15
1.54
1.45
1.93
2.07
1.83
1.35
1.66
2.23
1.94
2.27
2.36
2.18
-999
•999
4.41
2.10
1.42
1.25
2.67
1.29
1.61
2.82
SITECODE-OLTX
ACETALDEHYDE
PURITY
TUBE1
0.867
0.928
0.951
0.942
0.860
0.921
0.938
0.996
0.998
0.999
0.998
0.997
0.998
0.999
0.996
0.999
0.999
0.999
0.998
0.997
1.000
0.996
0.998
0.999
0.998
0.997
0.999
0.992
0.994
0.992
1.000
TUBE2
0.911
0.954
0.949
0.950
0.883
0.930
0.949
0.996
0.997
1.000
0.999
0.990
0.999
0.999
0.996
0.996
0.998
0.996
0.998
1.000
1.000
0.995
0.999
0.999
1.000
0.992
0.994
0.998
0.993
0.998
0.999
CONC (ppbv)
TUBE1
1.81
0.87
1.74
0.77
0.41
1.00
1.71
0.99
0.85
1.06
1.36
1.45
1.84
1.27
1.87
1.51
1.19
1.01
1.01
1.11
1.51
-999
-999
2.85
1.69
0.90
1.16
1.89
1.15
1.50
1.55
TUBE2
1.83
0.91
2.04
0.94
0.43
1.03
2.01
0.80
0.77
1.09
1.05
1.31
1.82
1.18
1.47
1.33
1.31
1.04
1.37
0.92
1.24
-999
-999
2.41
1.33
0.72
1.11
1.74
1.06
1.29
1.82
PURITY
TUBE1
0.960
0.986
0.982
0.979
0.928
0.977
0.965
0.970
0.985
0.994
0.997
0.988
0.989
1.000
0.988
0.990
0.983
0.971
0.990
0.997
0.993
0.990
0.982
0.996
0.982
0.985
0.911
0.967
0.995
0.996
0.975
TUBE2
0.967
0.992
0.981
0.981
0.905
0.949
0.956
0.996
0.992
0.984
0.998
0.982
0.987
0.998
0.987
0.991
0.992
0.982
0.996
0.999
0.965
0.977
0.989
0.990
0.983
0.890
0.921
0.956
0.965
0.964
0.950
ACETONE
CONC (ppbv)
TUBE1
1.28
2.01
1.34
1.79
1.12
0.53
-999
2.66
3.70
1.78
1.84
1.12
1.47
0.78
0.82
1.63
3.42
0.95
1.29
1.19
4.00
•999
-999
3.84
1.37
1.59
-999
1.25
1.00
3.32
4.06
TUBE2
2.03
2.14
1.67
2.32
1.23
0.76
1.14
2.53
4.35
2.40
1.39
1.75
1.89
1.21
0.61
1.51
4.07
0.96
1.03
1.12
3.73
-999
-999
3.38
2.07
1.63
-999
1.77
0.45
3.25
3.66
PURITY
TUBE1
0.896
0.925
0.978
0.941
0.913
0.714
0.631
0.979
0.911
0.927
0.817
0.806
0.893
0.779
0.667
0.815
0.926
0.808
0.818
0.477
0.973
0.498
0.922
0.535
0.793
0.640
0.478
0.919
0.975
0.911
0.893
TUBE2
0.970
0.930
0.989
0.969
0.891
0.739
0.871
0.984
0.929
0.916
0.818
0.917
0.911
0.793
0.818
0.816
0.924
0.828
0.818
0.808
0.609
0.488
0.957
0.959
0.497
0.903
0.908
0.489
0.892
0.967
0.986
"-999" indicates concentration below analytical detection limit  (ADD.
"." indicates  invalidated data.
                                                        C-5
-------
                         TABLE C-5.   LISTING OF TUBE 1 AMD TUBE 2  CONC (ppbv)  AND PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
16JAN89
28JAN89
09FEB89
21FEB89
05MAR89
17MAR89
29MAR89
10APR89
29APR89
04MAY89
16MAY89
28MAY89
09JUN89
21JUN89
03JUL89
15JUL89
27JUL89
08AUG89
20AUG89
01SEP89
13SEP89
25SEP89
070CT89
190CT89
310CT89
12HOVW
24NOV89
06DEC89
18DEC89
300EC89
11JAN90
23JAN90
WEEK ID
DAY NO.
2
7
5
3
1
6
4
2
7
5
3
1
6
4
2
7
5
3
1
6
4
2
7
5
3
1
6
4
2
7
5
3
0667
0676
0690
0704
0721
0732
07500
0767
0790
0801
0815
08310
0847
0862
08790
0892
0905
0920
0934
0952
0963
09780
0996
1013
1030
1045
1063
1083
1098
1112
1133
1147
LOT
30
14
30
30
30
30
30
32
32
32
32
32
35
35
35
35
39
39
39
39
39
39
42
42
42
42
42
11
11
11
46
46
CONC
TUBE1
3.40
2.25
2.41
2.03
1.19
1.03
1.03
2.06
3.54
0.72
2.11
0.88
1.28
1.49
2.39
2.30
1.95
3.60
1.20
1.89
0.99
2.69
1.64
2.71
3.92
1.15
1.22
4.36
4.06
2.67
5.02
1.77
(ppbv)
TUBE2
3.54
2.31
2.25
1.79
1.42
1.05
1.06
2.07
3.55
0.62
2.49
1.15
1.27
1.51
2.79
2.57
1.72
4.14
0.85
1.87
1.05
2.92
1.32
3.27
3.87
1.06
0.96
4.70
3.65
2.63
5.34
1.81
SITECODE*FLFL
ACETALDEHYDE
PURITY
TUBE1
0.944
0.959
0.950
0.971
0.933
0.872
0.918
0.998
1.000
0.996
0.999
0.999
0.994
0.998
0.999
0.998
0.999
1.000
0.995
0.995
0.996
0.999
0.998
0.999
0.999
0.979
0.987
0.997
0.995
0.999
0.997
0.999
TUBE2
0.947
0.941
0.943
0.950
0.958
0.916
0.935
0.997
0.998
0.996
0.997
0.991
0.996
0.996
1.000
1.000
0.991
0.998
0.987
0.997
0.995
0.998
0.993
0.999
1.000
0.996
0.978
1.000
0.990
0.991
0.990
0.891
CONC (ppbv)
TUBE1
2.07
1.30
1.25
1.04
0.63
0.66
0.55
1.75
3.30
0.48
2.09
0.76
0.62
0.87
1.49
1.67
1.17
1.56
1.14
0.90
0.75
1.53
0.77
1.11
1.98
0.59
0.55
2.24
1.59
1.53
2.59
0.80
TUBE2
-999
1.42
1.13
0.86
0.85
0.78
0.60
1.75
3.57
0.43
1.74
0.87
0.66
0.88
1.63
1.68
1.32
1.87
0.48
0.62
0.64
1.67
0.92
1.30
1.87
-999
0.85
2.10
1.84
2.30
2.69
0.75
PURITY
TUBE1
0.977
0.992
0.950
0.970
0.982
0.977
0.976
0.996
1.000
0.993
0.995
0.993
0.995
0.996
0.994
0.988
0.986
0.972
0.943
0.981
0.985
0.968
0.995
0.988
0.905
0.992
0.986
0.992
0.976
0.932
0.991
0.923
TUBE2
0.977
0.990
0.955
0.988
0.994
0.973
0.978
0.995
0.999
0.961
0.982
0.987
0.976
0.999
0.998
0.989
0.987
0.996
0.968
0.962
0.988
0.985
0.992
0.989
0.993
0.883
0.821
0.944
0.915
0.969
0.996
0.993
ACETONE
CONC (ppbv)
TUBE1
-999
0.73
0.44
-999
-999
-999
0.37
1.30
1.36
2.12
1.50
0.88
0.60-
0.46
0.56
-999
0.68
1.30
0.47
0.75
0.47
0.69
1.01
1.18
1.89
-999
0.73
-999
-999
-999
3.08
1.30
TUBE2
0.16
0.75
0.62
-999
-999
0.56
-999
1.63
1.39
2.91
1.67
0.63
0.86
0.65
0.62
0.38
0.73
1.09
-999
0.84
0.45
0.66
0.71
1.04
2.83
0.51
0.49
0.46
-999
-999
4.21
1.50
PURITY
TU8E1
0.659
0.837
0.713
0.594
0.625
0.626
0.620
0.818
0.816
0.791
0.787
0.817
0.667
0.667
0.667
0.667
0.802
0.791
0.667
0.667
0.795
0.817
0.667
0.803
0.934
0.794
0.818
0.889
0.902
0.926
0.902
0.920
TU8E2
0.686
0.862
0.737
0.642
0.645
0.655
0.618
0.817
0.787
0.787
0.767
0.667
0.814
0.819
-0.667
0.667
0.667
0.813
0.667
0.667
0.749
0.667
0.667
0.790
0.812
0.820
0.803
0.949
0.809
0.914
0.990
0.887
"-999" indicates concentration below analytical  detection  limit  (AOL).
"." indicates invalidated data.
                                                        C-6
-------
                       TABLE C-6.  LISTING OF TUBE 1 AND TUBE 2  CONC (ppbv)  AND PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
16JAN89
28JAN89
09FEB89
22FEB89
05MAM9
17MAR89
29MAR89
10APR89
22APR89
04MAY89
16NAY89
28MAY89
09JUN89
2tJUN89
03JUL89
15JUL89
27JUL89
08AUC89
20AUG89
27SEP89
010CT89
070CT89
130CT89
190CT89
190CT89
310CT89
06NOV89
12NOV89
18NOV89
24NOV89
30NOV89
06DEC89
120EC89
180EC89
03JAN90
11JAN90
17JAN90
23JAN90
WEEK
DAY
2
7
5
4
1
6
4
2
7
5
3
1
6
4
2
7
5
3
1
4
1
7
6
5
5
3
2
1
7
6
5
4
3
2
4
5
4
3
ID
NO.
0665
0675
0689
0705
0720
0734
0753
07690
0784
0800
0819
08330
0848
0861
0881
08930
0906
0919
0937
0982
0991
0997
1007
10190
1027
1033
1039
1053
1058
1066
1074
1082
1094
1100
1119
1132
1137
1152
CONC (ppbv)
LOT
30
14
30
30
30
30
30
32
32
32
32
32
35
35
35
35
39
39
39
39
39
39
39
42
42
42
42
42
42
42
42
42
11
11
11
11
46
46
TUBE1
2.53
1.71
3.14
0.91
0.55
1.58
2.12
1.41
1.60
1.45
1.57
2.10
1.81
1.60
2.91
1.50
6.22
3.33
1.72
3.61
1.66
2.59
3.40
2.40
1.47
3.18
1.43
1.06
3.96
4.08
2.22
1.95
2.45
1.96
2.05
2.69
1.38
4.90
TUBE2
2.54
1.82
3.10
1.27
0.38
1.64
1.74
1.21
1.53
1.49
1.85
2.29
1.79
1.58
3.06
1.54
5.39
3.40
2.04
3.78
1.69
2.41
3.43
2.37
1.57
3.13
1.63
0.93
3.39
3.88
2.79
2.13
2.44
1.74
1.90
2.37
1.53
5.24
SITECOOE-H1TX
ACETALDEHYDE
PURITY
TUBE1
0.911
0.949
0.946
0.941
0.920
0.945
0.945
0.999
0.994
0.998
0.998
0.998
0.999
0.996
0.999
0.998
0.998
1.000
0.998
0.999
1.000
0.992
0.816
0.997
0.999
0.996
0.994
0.997
1.000
0.999
0.980
0.999
0.995
0.983
0.998
0.997
0.989
0.998
TUBE2
0.908
0.955
0.949
0.910
0.839
0.953
0.938
0.990
0.989
0.996
1.000
0.997
0.995
0.996
0.999
0.987
0.999
0.999
0.999
1.000
0.999
1.000
0.999
0.999
0.996
0.999
0.995
0.982
1.000
0.999
0.989
0.996
0.999
0.999
0.984
0.998
0.991
1.000
CONC (ppbv)
TUBE1
1.56
1.68
1.70
0.50
0.37
1.71
1.62
0.89
2.77
1.51
1.48
2.69
1.77
1.22
2.49
1.28
4.59
1.11
1.77
1.58
1.26
1.62
2.95
1.27
1.58
1.43
1.13
1.45
2.19
2.88
1.19
1.73
1.34
1.24
1.49
1.71
2.40
7.42
TUBE2
1.59
1.54
1.66
0.50
0.38
1.80
1.23
0.67
2.72
1.65
1.57
2.68
1.43
1.31
2.27
1.44
3.62
1.14
1.98
1.40
1.27
2.14
3.15
1.23
1.83
1.39
1.30
1.15
2.11
2.90
1.14
2.04
1.57
1.57
1.38
1.68
2.80
7.71
PURITY
TUBE1
0.970
0.989
0.955
0.806
0.776
0.988
0.961
0.974
0.992
0.996
0.982
0.991
0.992
0.997
0.988
0.979
0.998
0.994
0.977
0.995
0.981
0.986
0.815
0.978
0.489
0.927
0.984
0.996
0.994
0.995
0.968
0.962
0.994
0.944
0.956
0.984
0.904
0.993
TUBE2
0.970
0.990
0.952
0.792
0.814
0.989
0.982
0.993
0.996
0.993
0.983
0.996
0.990
0.998
0.986
0.984
0.993
0.998
0.999
0.998
0.960
0.957
0.993
0.990
0.984
0.975
0.982
0.992
0.577
0.985
0.930
0.962
0.952
0.953
*.»><»
0.982
0.931
0.974
ACETONE
CONC (ppbv)
TUBE1
1.49
0.58
0.85
1.14
0.90
-999
0.88
1.93
4.01
0.71
0.67
1.48
1.55
-999
0.95
-999
1.30
2.14
0.96
3.84
3.06
1.64
2.42
2.23
1.43
1.43
-999
2.19
2.28
3.75
1.01
2.46
-999
0.67
-999
-999
0.76
2.67
TUBE2
1.91
0.86
1.27
1.26
1.00
-999
0.92
1.46
4.27
0.93
0.44
1.80
1.39
0.54
0.72
• 0.40
2.05
2.40
0.96
4.03
4.36
1.68
2.51
2.54
2.36
1.17
-999
2.39
2.14
4.C
0.9.
2.65
0.59
0.38
-999
-999
0.74
3.47
PURITY
T' ;1
0.912
0.759
0.939
0.952
0.881
0.672
0.690
0.981
0.897
0.667
0.806
0.805
0.816
0.667
0.774
0.667
0.800
0.815
0.667
0.482
0.816
0.816
0.667
0.818
0.818
0.908
0.667
0.810
0.921
0.666
0.872
\959
?76
;44
.38
0.918
0.824
0.544
TUBE2
0.963
0.811
0.967
0.928
0.847
0.633
0.732
0.976
0.930
0.813
0.667
0.906
0.803
0.667
0.667
0.737
0.783
0.818
0.816
0.922
0.807
0.813
0.817
0.476
0.813
0.917
0.861
0.816
0.469
0.506
0.914
0.821
0.475
0.475
0.871
0.828
0.774
0.518
"-999" indicates concentration below
"." indicates invalidated data.
analytical detection limit (ADD.
                                                        C-7
-------
                        TABLE C-7.  LISTING OF TUBE 1 AND TUBE 2  CONC (ppbv)  AND PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
16JAN89
28JAN89
09FEB89
21FEB89
05MAR89
18MAR89
29MAR89
10APR89
22APR89
04MAY89
16MAY89
28MAY89
09JUN89
21JUN89
03JUL89
1SJUL89
27JUL89
08AUC89
20AUG89
01S6P89
13SEP89
2SSEP89
070CT89
190CT89
310CT89
12NOV89
24NOV89
06DEC89
18DEC89
300EC89
11JAM90
23JAN90
WEEK
DAY
2
7
5
3
1
7
4
2
7
5
3
1
6
4
2
7
5
3
1
6
4
2
7
5
3
1
6
4
2
7
5
3
ID
NO.
0663
0679
06940
0706
0722
0749
0756
0774.
07880
0805
0820
0835
0851
0880
0876
0896
09100
0925
0936
0953
0969
0983
1010
1016D
10360
1051
1069
1088
1105
1114
1136
1150
LOT
30
14
30
30
30
30
30
32
32
32
32
32
35
35
35
35
39
39
39
39
39
39
42
42
42
42
42
11
11
11
46
46
CONC
TUBE1
3.16
3.23
2.48
1.05
1.29
0.78
1.32
1.83
0.75
0.62
2.77
0.96
1.52
1.72
2.13
1.61
2.04
2.19
1.40
1.77
1.06
1.33
1.05
2.00
2.69
0.68
0.82
3.28
2.73
1.64
3.26
1.67

TUBE2
3.15
3.04
2.46
1.16
1.51
0.89
1.13
1.56
0.67
0.53
3.16
0.93
1.39
1.69
2.14
1.70
1.84
2.17
1.07
1.96
0.87
0.94
1.04
1.87
2.82
-999
0.85
3.42
2.21
1.93
3.55
1.66
SITECODE-MIFL
ACETALDEHYDE
PURITY
TUBE1
0.946
0.965
0.954
0.941
0.958
0.854
0.952
0.998
0.994
0.996
0.998
0.996
0.998
0.999
1.000
0.997
0.997
0.995
0.996
0.999
0.998
0.993
0.994
1.000
0.999
0.996
0.995
0.995
0.993
0.996
0.998
0.969
TUBE2
0.942
0.969
0.961
0.947
0.967
0.941
0.952
0.993
0.999
0.999
0.999
0.997
0.994
0.996
0.999
0.998
1.000
0.999
0.999
0.998
0.998
0.998
0.983
0.996
0.999
0.942
0.995
1.000
1.000
0.983
0.998
0.890
CONC (ppbv)
TUBE1
1.52
2.18
1.69
0.65
0.62
0.53
0.68
1.25
0.76
0.62
2.52
0.72
0.88
0.79
1.12
1.39
1.36
1.80
-999
1.05
0.66
1.34
0.56
1.20
1.95
-999
0.70
1.35
1.39
1.04
2.94
1.74
TUBE2
1.30
1.72
1.65
0.59
0.55
0.51
0.66
1.25
0.63
0.36
2.57
0.92
0.93
0.93
1.08
1.26
1.15'
1.79
0.50
1.19
0.60
0.61
0.47
1.32
1.92
0.53
0.43
1.63
1.37
1.02
2.54
1.49
PURITY
TUBE1
0.974
0.982
0.981
0.994
0.992
0.909
0.989
0.998
0.963
0.924
0.990
0.995
0.996
0.893
0.968
0.926
0.996
0.988
0.894
0.975
0.980
0.962
0.971
0.993
0.974
0.939
0.995
0.978
0.978
0.941
0.914
0.892
TUBE2
0.989
0.994
0.981
0.994
0.993
0.984
0.987
0.972
0.993
0.986
0.997
0.956
0.991
0.986
0.982
0.991
0.974
0.990
0.741
0.987
0.978
0.977
0.991
0.996
0.987
0.901
0.959
0.980
0.963
0.994
0.954
0.981
ACETONE
CONC (ppbv)
TU8E1
-999
1.47
0.51
-999
-999
-999
0.33
1.16
1.98
2.64
1.26
1.07
-999
0.55
-999
0.37
-999
0.66
-999
-999
1.50
0.56
0.71
1.13
1.79
1.03
1.36
-999
-999
-999
5.42
1.75
TUBE2
-999
1.15
0.35
-999
-999
-999
0.36
1.05
1.93
2.33
0.78
1.01
-999
0.60
-999
-999
0.53
-999
-999
-999
1.24
0.53
-999
1.04
1.57
0.50
1.12
-999
-999
-999
4.83
1.72
PURITY
TUBE1
0.632
0.871
0.724
0.724
0.626
0.606
0.617
0.784
0.795
0.789
0.667
0.716
0.667
0.667
0.667
0.667
0.816
0.667
0.306
0.667
0.810
0.735
0.667
0.667
0.817
0.477
0.816
0.926
0.924
0.805
0.560
0.835
TUBE2
0.583
0.875
0.687
0.651
0.654
0.000
0.626
0.811
0.792
0.796
0.667
0..798
0.809
0.667
0.667
0.667
0.818
0.667
0.000
0.515
0.817
0.667
0.667
0.667
0.495
0.817
0.815
0.883
0.763
0.924
0.993
0.929
"-999" indicate* concentration below analytical detection  limit  (AOL).
".« indicates invalidated data.
                                                       C-8
-------
                         TABLE C-8.  LISTING OF TUBE 1 AND TUBE 2  CONC (ppbv)  AND PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
22APR89
11DEC89
180EC89
04JAN90
11JAN90
17JAN90
29JAN90
WEEK ID
DAY NO.
7
2
2
5
5
4
2
0786
1087
1101
1122
1131
1U2D
1154
LOT
32
11
11
70
11
46
46
CONC
TUBE1
1.40
1.97
1.16
1.59
2.56
1.35
2.00
(PP*»v>
TUBE2
1.19
1.09
1.47
1.68
2.75
-999
1.88
SITECODE*PEFL
ACETALDEHYDE
PURITY
TUBE1
0.980
0.976
0.942
0.948
0.997
0.974
0.989
TUBE2
0.993
0.962
0.994
0.956
0.996
0.954
0.975
CONC (ppbv)
TUBE1
1.10
0.97
0.81
1.45
1.44
1.37
0.92
TU8E2
1.00
0.89
1.01
1.54
1.78
1.04
1.01
PURITY
TUBE1
0.985
0.991
0.898
0.936
0.993
0.933
0.971
TUBE2
0.973
0.924
0.970
0.928
0.924
0.920
0.983
ACETONE
CONC (ppbv)
TUBE1
4.11
-999
1.43
1.64
1.48
1.17
1.29
TUBE2
4.15
-999
0.57
1.50
2.10
1.10
1.73
PURITY
TUBE1
0.932
0.919
0.888
0.894
0.963
0.909
0.931
TU8E2
0.930
0.888
0.433
0.817
0.451
0.929
0.868
"-999" indicates concentration below analytical detection  limit  (AOL).
"." indicates invalidated data.
                                                       C-9
-------
                        TABLE C-9.   LISTING OF TUBE 1 AND TUBE 2  CONC  (pptov)  AND PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
22JAN89
03FEB89
1SFEB89
27FEB89
11MAR89
25MAR89
04APR89
16APR89
28APR89
10MAY89
22MAY89
03JUN89
15JUN89
27JUN89
09JUL89
21JUL89
02AUG89
UAUG89
26AUG89
07SEP89
19SEP89
010CT89
130CT89
250CT89
08NOV89
18NOV89
30NOV89
12DEC89
240EC89
OSJAN90
17JAN90
WEEK ID
DAY NO.
1
6
4
2
7
7
3
1
6
4
2
7
5
3
1
6
4
2
7
5
3
1
6
4
4
7
5
3
1
6
4
0669
0681
0697
07160
0739
0744
0763
0775
0791
0809
0821
0841
0855
0868
0882
0898
0914
09320
0943
0957
0976
0988
1003
1022
10440
1057
1075
1095
1102
1121
1139
LOT
15
30
30
30
30
30
30
32
32
32
32
35
35
35
35
35
39
39
39
39
39
39
42
42
42
42
42
39
11
46
46
CONC
TUBE1
1.83
1.94
2.99
2.33
0.67
1.84
1.96
1.18
2.50
1.98
1.58
1.35
1.32
2.12
3.95
2.60
2.71
3.92
2.09
3.34
1.74
3.02
5.14
2.00
2.65
1.62
5.42
2.81
1.96
4.67
2.23
(pptov)
TUBE2
1.71
2.07
2.99
2.19
0.00
-999
-999
1.04
2.54
1.60
1.61
1.36
1.22
1.89
3.97
2.93
2.44
3.82
2.00
3.33
1.63
2.84
4.88
2.85
2.23
1.36
5.31
2.39
2.21
4.41
2.09
SITECCOE-S2MO
ACETALDEHYDE
PURITY
TUBE1
0.883
0.956
0.949
0.941
0.799
0.917
0.923
0.989
0.997
0.994
0.999
0.998
0.998
0.991
0.997
0.997
0.999
0.999
0.999
1.000
0.999
0.998
0.998
0.997
1.000
0.990
1.000
0.994
0,925
0.984
0.996
TUBE2
0.854
0.948
0.948
0.929
0.000
0.000
0.000
0.992
0.993
0.996
0.994
0.991
0.968
0.997
1.000
0.993
0.990
0.999
1.000
0.999
0.978
0.998
0.992
0.997
0.996
0.998
0.999
0.952
0.997
0.996
0.980
CONC (ppbv)
TUBE1
0.94
1.09
1.57
0.81
-999
1.08
0.88
0.80
1.82
1.05
1.12
1.18
0.63
1.26
1.39
2.15
2.18
1.80
1.94
2.43
1.06
1.35
3.38
1.55
0.72
0.89
2.62
0.85
1.16
3.51
1.96
TUBE2
0.93
1.10
1.67
0.83
0.00
-999
-999
0.86
1.79
1.05
1.29
1.18
-999
1.16
1.57
1.82
2.30
1.77
1.78
1.57
1.32
1.33
3.31
1.67
-999
0.60
2.40
0.98
1.35
2.99
2.27
PURITY
TUBE1
0.916
0.975
0.976
0.899
0.000
0.918
0.805
0.994
0.988
0.963
0.988
0.980
0.994
0.980
0.988
0.947
0.981
0.982
0.995
0.988
0.996
0.996
0.968
0.980
0.973
0.952
0.986
0.931
0.995
0.890
0.981
TUBE2
0.908
0.980
0.979
0.901
0.000
0.000
0.000
0.976
0.997
0.997
0.960
0.990
0.977
0.996
0.987
0.996
0.970
0.983
0.959
0.926
0.961
0.985
0.986
0.996
0.952
0.941
0.951
0.974
0.937
0.957
0.951
ACETONE
CONC (ppbv)
TUBE1
1.90
1.87
1.99
1.30
-999
1.92
2.12
3.77
3.93
2.91
2.41
1.95
2.42
1.39
1.11
1.33
2.90
4.80
-999
1.36
4.15
2.89
8.67
6.44
1.88
1.37
4.03
2.19
1.02
4.24
2.38
TUBE2
1.82
1.91
1.74
1.25
0.00
-999
-999
3.91
3.61
3.26
2.16
2.01
2.09
1.59
1.35
1.39
2.84
4.51
0.58
1.21
4.02
3.33
8.86
7.18
2.14
1.14
3.68
1.98
1.19
3.77
2.60
PURITY
TUBE1
0.932
0.985
0.968
0.984
0.000
0.854
0.950
0.990
0.973
0.988
0.925
0.907
0.782
0.667
0.804
0.817
0.916
0.488
0.795
0.817
0.813
0.475
0.955
0.691
0.484
0.928
0.985
0.549
0.918
0.927
0.930
TUBE2
0.972
0.970
0.982
0.962
0.000
0.928
0.955
0.992
0.981
0.961
0.911
0.932
0.313
0.791
0.815
0.807
0.905
0.513
0.817
0.789
0.935
0.903
0.963
0.967
0.975
0.475
0.903
0.963
0.954
0.985
0.935
"-999" fndicatM concentration below analytical detection limit (ADD.
"." indicates  invalidated data.
                                                     C-10
-------
                        TABLE C-10.  LISTING OF TUBE 1  AND TUBE  2   CONC  (ppbv)  AND PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
22JAN89
02FEB89
16FEB89
27FEB89
11MAR89
21MAR89
04APR89
28APR89
10MAY89
22MAY89
03JUN89
15JUN89
27JUN89
09JUL89
21JUL89
02AUG89
16AUG89
26AUG89
07SEP89
19SEP89
030CT89
130CT89
250CT89
07NOV89
18NOV89
30NOV89
12DEC89
24DEC89
05JAN90
17JAN90
WEEK
DAY
1
5
5
2
7
3
3
6
4
2
7
5
3
1
6
4
4
7
5
3
3
6
4
3
7
5
3
1
6
4
10
NO.
0668
0680
0703
0718
07260
0745
0762
0799
0807
0829
0842
0856
0866
0889
0904
0918
0930
09450
0955
0972
0998
1006
1026
1047
10600
1072
1093
1113
1129
1143
LOT
15
30
30
30
30
30
30
32
32
32
35
35
35
35
39
39
39
39
39
39
39
42
42
42
42
42
39
11
46
46
CONC
TUBE1
0.61
0.59
0.70
0.94
2.95
1.64
0.78
1.06
1.40
0.79
1.08
1.16
1.03
2.63
0.96
1.25
1.80
1.66
1.52
1.31
2.08
2.06
0.76
1.50
0.78
3.55
1.42
0.83
2.44
1.60
SITECODE-SAIL
ACETALDEHYDE
(ppbv) PURITY
TUBE2
0.40
0.85
1.04
0.93
2.75
1.83
0.68
0.89
1.49
0.90
0.98
1.29
1.35
3.34
1.01
1.50
1.73
1.73
1.96
1.34
1.81
1.88
0.47
1.51
0.80
3.60
1.27
1.27
2.54
0.98
TUBE1
0.825
0.910
0.943
0.908
0.936
0.927
0.950
0.995
0.996
0.996
0.998
0.992
1.000
0.998
1.000
1.000
0.989
0.999
1.000
0.997
0.997
0.999
0.937
0.998
0.995
0.975
0.949
0.974
0.931
0.954
TUBE2
0.803
0.973
0.967
0.892
0.928
0.954
0.878
0.994
0.997
0.978
0.950
1.000
1.000
1.000
0.978
0.995
0.973
0.995
0.998
0.999
0.993
0.998
0.946
0.994
0.993
0.997
0.996
0.965
0.998
0.996
CONC (ppbv)
TUBE1
0.40
0.53
-999
0.47
1.20
0.96
0.54
0.45
0.94
0.62
0.82
0.55
•999
0.42
0.60
1.08
0.99
1.27
0.60
0.83
1.23
2.34
0.48
1.28
0.44
2.47
1.51
0.62
1.73
0.90
TUBE2
0.40
0.60
0.37
0.43
1.80
0.96
0.57
0.42
1.13
0.86
0.79
0.48
-999
0.78
-999
1.37
0.87
1.04
0.74
0.98
1.05
1.93
-999
1.02
0.78
2.56
1.51
0.80
1.88
0.52
PURITY
TUBE1
0.812
0.988
0.806
0.807
0.964
0.903
0.801
0.944
0.991
0.994
0.982
0.991
0.929
0.994
0.997
0.993
0.989
0.989
0.976
0.967
0.982
0.986
0.906
0.946
0.782
0.994
0.982
0.841
0.979
0.971
TUBE2
0.807
0.992
0.814
0.809
0.972
0.972
0.802
0.854
0.989
0.942
0.975
0.998
0.930
0.992
0.976
0.981
0.868
0.995
0.948
0.981
0.955
0.991
0.736
0.907
0.980
0.954
0.989
0.951
0.910
0.978
ACETONE
CONC (ppbv)
TUBE1
0.66
0.63
0.74
0.77
-999
1.20
1.69
2.45
2.84
1.26
0.95
1.61
-999
-999
0.70
0.94
2.15
•999
0.50
2.45
2.16
6.64
3.59
1.54
1.59
3.84
2.00
-999
2.22
2.45
TUBE2
0.53
0.58
0.72
0.77
1.94
2.18
2.25
2.79
2.68
1.48
1.37
1.60
-999
-999
1.00
0.68
2.55
-999
0.53
3.16
2.55
7.20
3.89
1.22
1.08
3.54
2.02
0.71
1.85
1.42
PURITY
TU8E1
0.850
0.900
0.942
0.955
0.000
0.893
0.868
0.980
0.988
0.817
0.915
0.934
0.000
0.667
0.818
0.817
0.817
0.667
0.667
0.817
0.990
0.981
0.885
0.477
0.489
0.585
0.958
0.490
0.571
0.908
TUBE2
0.960
0.811
0.861
0.897
0.869
0.928
0.877
0.998
0.955
0.813
0.816
0.991
0.667
0.667
0.815
0.667
0.816
0.867
0.667
0.812
0.920
0.989
0.813
0.919
0.478
0.925
.
0.425
0.972
0.882
"-999" Indicate* concentration below analytical detection limit (AOL).
"." indicates invalidated data.
                                                     C-ll
-------
                        TABLE C-11.  LISTING OF TUBE 1 AND TUBE 2  CONC (ppbv)  AND PURITY  DATA
FORMALDEHYDE
SAMPLE
DATE
22JAN89
03FEB89
15FEB89
27FEB89
11KAR89
23MAR89
04APR89
16APR89
28APR89
22MAY89
03JUM89
19JUN89
27JUN89
09JUL89
21JUL89
02AUG89
14AUG89
20AUG89
26AUC89
07SEP89
19SEP89
010CT89
130CT89
250CT89
06NOV89
18NOVS9
30NOV89
12DEC89
WEEK ID
DAY NO.
1
6
4
2
7
5
3
1
6
2
7
2
3
1
6
4
2
1
7
5
3
1
6
4
2
7
5
3
0674
0687
0699
0712
0728
07460
075ft
0776
0792
0824
08380
0857
0867
0884
0899
0913
0928
0933
0947
09620
0973
0990
1004
1024
1038
1054
10710
1091
LOT
15
30
30
30
30
30
30
32
32
32
32
35
35
35
35
39
39
39
39
39
39
39
42
42
42
42
42
39
CONC
TUBE1
5.19
2.08
4.59
2.59
1.46
1.61
1.76
1.53
2.03
3.70
2.63
5.49
3.42
4.45
5.58
3.43
5.06
3.69
4.14
4.54
1.81
2.85
5.99
7.16
5.79
3.68
3.32
3.60
(Ppbv)
TUBE2
5.38
1.89
4.36
2.42
1.53
1.84
2.02
1.75
1.79
3.75
2.72
6.13
3.72
5.09
6.28
3.73
6.18
3.98
4.20
4.80
1.85
2.45
6.67
7.48
5.54
3.43
3.24
3.64
SITECOOE=U1DC
ACETALDENYDE
PURITY
TUBE1
0.958
0.951
0.957
0.939
0.928
0.946
0.921
0.976
0.989
0.998
0.998
0.999
1.000
1.000
0.999
0.997
0.998
0.999
0.998
0.999
0.999
1.000
1.000
0.999
0.997
0.999
0.997
1.000
TUBE2
0.958
0.941
0.954
0.942
0.935
0.923
0.945
0.992
0.995
0.997
0.999
0.998
0.999
0.997
0.999
0.999
1.000
1.000
0.999
0.998
0.999
1.000
0.999
1.000
0.998
1.000
0.999
0.997
CONC (ppbv)
TUBE1
2.11
1.08
2.26
0.97
0.64
0.61
0.88
0.58
0.97
2.01
1.59
2.31
1.76
1.75
2.39
1.45
2.34
0.97
2.71
1.57
0.94
1.53
4.10
3.91
2.35
1.48
1.89
2.63
TUBE2
2.12
1.05
1.83
0.81
0.64
0.78
1.10
0.97
1.04
1.89
1.72
3.13
1.93
1.75
2.18
1.98
2.80
1.55
2'. 17
1.80
0.96
1.70
3.70
4.41
2.44
1.44
1.64
2.80
PURITY
TUBE1
0.984
0.974
0.973
0.955
0.961
0.806
0.896
0.990
0.981
0.979
0.996
0.996
0.999
0.992
0.994
0.994
0.997
0.992
0.982
0.994
0.962
0.989
0.999
0.996
0.997
0.873
0.994
0.937
TUBE2
0.973
0.982
0.960
0.962
0.977
0.888
0.914
0.986
0.999
0.993
0.998
0.993
0.994
0.998
0.987
0.998
0.980
0.976
0.997
0.997
0.966
0.987
0.983
0.992
0.989
0.975
0.950
0.917
ACETONE
CONC (ppbv)
TUBE1
1.82
1.24
0.83
1.36
0.59
1.39
1.07
2.97
2.83
3.59
2.59
1.63
1.49
1.20
1.01
2.81
1.45
2.52
3.23
4.35
1.62
2.45
6.65
5.70
2.60
1.35
1.77
2.64
TUBE2
1.56
1.00
-999
1.35
0.47
1.32
0.76
2. 86
3.28
3.27
2.41
0.90
1.02
1.46
1.26
3.16
1.86
2.67
2.35
3.71
1.67
1.34
4.54
5.55
2.76
1.10
2.03
2.55
PURITY
TUBE1
0.945
0.968
O.S56
0.982
0.966
0.956
0.813
0.982
0.952
0.985
0.931
0.314
0.316
0.315
0.815
0.998
0.815
0.817
0.812
0.695
0.817
0.988
0.840
0.982
0.919
0.982
0.965
0.906
TUBE2
0.983
0.972
0.723
0.966
0.959
0.946
0.836
0.992
0.971
0.986
0.934
0.912
0.818
0.816
0.814
0.924
0.811
0.8U
0.926
0.502
0.302
0.473
0.989
0.988
0.981
0.992
0.935
0.911
•-999" indicate* concentration below analytical  detection  limit (ADD.
".» indicates invalidated data.
                                                    C-12
-------
                        TABLE C-12.  LISTING OF TUBE 1  AND  TUBE 2  CONC (ppbv)  AND PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
22JAN89
03FEB89
15FEB89
27FEB89
11MAR89
23MAR89
04APR89
16APR89
28APR89
10MAY89
03JUN89
15JUN89
27JUN89
09JUL89
21JUL89
02AUC89
14AUC89
26AUC89
07SEP89
19SEP89
010CT89
130CT89
250CT89
06NOV89
18NOV89
30NOV89
12DEC89
300EC89
OSJAN90
17JAN90
WEEK
DAY
1
6
4
2
7
5
3
1
6
4
7
5
3
1
6
4
2
7
5
3
1
6
4
2
7
5
3
7
6
4
ID
NO.
0671
0683
0701
0709
0724
0740
0761
0772D
0798
0813
0839-
0854
08720
0887
0901
0917
0927
0942
0956
0970
09930
1011
1023
1040
1062
1077
1092
1111D
1127
1145
CONC (ppbv)
LOT
15
30
30
30
30
30
32
32
32
32
35
35
35
35
35
39
39
39
39
39
39
42
42
42
42
42
11
11
26
46
TUBE1
1.18
•999
0.76
2.47
1.27
0.70
0.72
1.07
1.72
0.71
1.15
1.06
0.48
1.17
1.34
2.06
1.04
2.08
1.46
1.16
1.54
1.40
1.13
1.86
0.96
4.85
1.97
1.12
2.58
1.43
TUBE2
1.12
0.82
0.71
2.63
1.15
0.80
0.93
1.18
1.47
0.87
1.16
1.36
0.56
0.75
1.93
2.39
1.20
2.78
1.29
1.01
1.19
1.39
1.19
1.49
1.07
5.18
2.20
1.03
2.88
1.29
SITECOOE-W1KS
ACETALDEHYDE
PURITY
TUBE1
0.925
0.935
0.960
0.948
0.935
0.892
0.887
0.996
0.990
0.984
0.999
0.988
0.895
0.994
0.988
0.996
0.981
0.965
0.993
0.995
0.997
0.999
0.975
0.999
0.991
0.997
0.987
0.916
0.987
0.982
TUBE2
0.923
0.930
0.924
0.942
0.931
0.832
0.901
0.992
0.993
0.998
0.989
0.999
0.000
1.000
0.996
0.999
0.996
0.972
0.997
0.995
0.998
0.570
1.000
0.997
0.994
0.993
0.999
0.838
0.943
0.890
CONC (ppbv)
TUBE1
0.64
-999
0.41
1.10
1.26
0.43
0.45
0.82
1.42
0.84
0.98
0.72
0.68
0.83
1.32
0.46
-999
-999
1.57
0.84
1.23
0.79
1.10
1.18
0.71
2.94
1.21
0.43
1.58
0.96
TUBE2
0.75
0.48
-999
1.03
0.83
0.47
0.44
0.95
1.64
0.77
1.23
0.98
0.68
0.54
1.17
0.61
-999
-999
1.13
0.54
0.99
0.84
0.94
1.08
0.81
3.16
1.29
0.85
2.21
0.94
PURITY
TU8E1
0.988
0.714
0.800
0.963
0.917
0.783
0.906
0.980
0.999
0.945
0.995
0.997
0.985
0.967
0.975
0.994
0.885
0.997
0.989
0.985
0.960
0.984
0.859
0.932
0.994
0.995
0.986
0.935
0.933
0.982
TUBE2
0.970
0.912
0.918
0.963
0.896
0.799
0.921
0.997
0.998
0.980
0.995
0.968
0.921
0.912
0.995
0.988
0.956
0.939
0.992
0.972
0.978
0.475
0.994
0.967
0.938
0.984
0.997
0.972
0.871
0.974
ACETONE
CONC (ppbv)
TUBE1
1.71
0.39
0.80
1.20
2.12
1.96
1.53
4.03
2.76
3.35
1.30
1.88
1.09
0.37
1.39
0.46
4.14
1.78
1.97
3.44
5.09
5.46
2.26
1.91
2.07
4.55
1.24
-999
2.11
3.12
TUBE2
1.76
0.58
1.01
1.31
-999
2.29
1.54
4.08
3.07
3.52
1.40
2.03
1.03
-999
1.53
0.69
3.92
2.53
1.79
3.53
5.35
6.94
2.54
2.06
2.18
4.51
0.97
0.50
2.16
2.64
UR1TY
TUBE1
0.914
0.630
0.840
0.945
0.828
0.881
0.898
0.971
0.995
0.979
0.807
0.902
0.764
0.667
0.815
0.810
0.836
0.845
0.808
0.809
0.508
0.979
0.817
0.970
0.923
0.973
0.907
0.460
0.954
0.464
TUBE2
0.945
0.850
0.877
0.915
0.634
0.874
0.904
0.980
0.979
0.974
0.777
0.933
0.786
0.667
0.793
0.783
0.907
0.467
0.811
0.811
0.980
0.630
0.480
0.810
0.918
0.920
0.498
0.509
0.970
0.888
"-999" fndieatM concentration below analytical detection limit (ADD.
"." indicates  invalidated data.
                                                    C-13
-------
                        TABLE C-13.  LISTING OF TUBE  1 AND TUBE 2  CONC (ppbv)  AND PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
22JAN89
03FEB89
15FEB89
27FEB89
11MAR89
23MAR89
04APR89
16APR89
28APR89
10NAY89
10MAY89
22MAY89
03JUN89
15JUN89
27JUN89
09JUL89
21JUL89
26AUG89
07SEP89
19SEP89
010CT89
130CT89
250CT89
06NOV89
18NOV89
30NOV89
12DEC89
24DEC89
05JAN90
17JAN90
WEEK ID
DAY NO.
1
6
4
2
7
5
3
1
6
4
4
2
7
5
3
1
6
7
5
3
1
6
4
2
7
5
3
1
6
4
0684
0686
0700
0713
0729
0748
07640
0778
0795
0803
0804
0825
0836
08590
0875
0883
0897
0946
0960
09750
0987
1002
1025
1037
1055
1073
10900
1103
1123
1138
LOT
15
30
30
30
30
30
30
32
32
32
32
32
32
35
35
35
35
39
39
39
39
24
42
42
42
42
11
11
46
46
CONC
TUBE1
4.22
2.73
4.65
1.46
1.35
2.19
1.29
2.57
2.04
2.08
1.27
3.95
2.12
2.77
2.89
4.28
3.66
2.62
2.61
2.11
2.54
5.84
9.19
1.69
2.25
3.08
4.76
2.58
4.52
5.90
(ppbv)
TUBE2
3.86
2.72
5.06
3.19
1.69
2.42
1.43
2.61
2.30
1.77
1.33
4.21
2.38
2.09
3.24
3.95
-999
1.90
2.49
2.08
2.62
5.24
8.62
2.01
2.06
3.49
3.67
2.33
3.23
6.01
SITECOOE=U2DC
ACETALDEHYDE
PURITY
TUBE1
0.948
0.951
0.959
0.980
0.922
0.924
0.927
0.998
0.998
0.997
0.998
0.774
0.998
1.000
0.999
0.997
0.999
0.989
0.997
0.995
0.999
1.000
1.000
0.999
1.000
0.941
0.977
0.992
1.000
0.999
TUBE2
0.940
0.947
0.956
0.944
0.937
0.943
0.914
0.996
0.996
0.999
0.997
1.000
0.996
0.997
0.992
0.999
0.000
0.999
0.994
0.999
0.999
0.999
1.000
0.984
0.997
0.990
0.999
0.970
0.988
0.999
CONC (ppbv)
TUBE1
1.55
1.25
1.99
0.56
0.55
0.96
0.61
1.19
1.31
1.18
0.79
2.35
1.63
1.31
1.20
1.39
1.57
1.11
1.58
1.20
2.56
3.40
6.04
1.03
1.04
1.52
3.00
1.12
1.80
3.38
TUBE2
1.41
1.19
2.17
1.05
0.90
1.29
0.72
1.48
1.29
1.14
0.71
2.07
1.76
1.20
1.34
1.95
-999
0.61
0.99
0.98
1.64
3.49
5.54
1.04
1.04
1.06
2.40
1.21
1.39
3.37
PURITY
TUBE1
0.990
0.972
0.985
0.996
0.907
0.920
0.905
0.984
0.973
0.994
0.999
0.998
0.990
0.973
0.989
0.972
0.988
0.983
0.984
0.963
0.974
0.997
0.992
0.983
0.990
0.980
0.973
0.973
0.997
0.930
TUBE2
0.987
0.977
0.980
0.902
0.964
0.899
0.793
0.996
0.996
0.985
0.996
0.993
0.986
0.944
0.989
0.957
0.000
0.989
0.981
0.973
0.992
0.998
0.992
0.829
0.993
0.977
0.989
0.962
0.929
0.972
ACETONE
CONC (ppbv)
TUBE1
1.94
0.95
0.59
1.25
0.34
1.12
1.43
3.23
3.08
2.69
2.20
3.98
2.60
0.93
-999
1.35
1.62
3.19
3.08
1.75
1.04
6.30
7.20
3.21
1.90
1.80
1.15
1.00
2.74
4.47
TUBE2
1.93
1.06
1.60
1.32
0.85
1.59
2.40
3.42
3.59
2.32
2.90
4.52
4.40
0.49
-999
1.39
-999
3.28
3.02
1.82
2.18
6.95
6.86
2.68
1.94
1.48
1.36
1.04
2.75
4.85
PURITY
TUBE1
0.835
0.872
0.901
0.980
0.913
0.981
0.756
0.943
0.974
0.930
0.810
0.984
0.935
0.809
0.000
0.814
0.811
0.816
0.930
0.815
0.883
0.636
0.509
0.536
0.973
0.489
0.424
0.943
0.488
0.963
TU8E2
0.961
0.900
0.885
0.958
0.975
0.966
0.783
0.982
0.980
0.916
0.889
0.972
0.909
0.797
0.667
0.818
0.952
0.876
0.630
0.777
0.930
0.536
0.602
0.967
0.506
0.464
0.885
0.522
0.962
0.897
"-999" indicate concentration below analytical detection limit  (ADD.
"." indicates invalidated data.
                                                   C-14
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                        TABLE C-14.  LISTING OF TUBE 1 AND TUBE 2  CONC  (ppbv)  AND PURITY DATA
FORMALDEHYDE
SAMPLE
DATE
22JAN89
03FEB89
15FEB89
27FEB89
11MAR89
23MAR89
04APR89
16APR89
28APR89
10NAY89
22MAY89
03JUN89
15JUN89
27JUN89
09JUL89
21JUL89
02AUG89
14AUG89
26AUG89
25SEP89
010CT89
070CT89
130CT89
190CT89
250CT89
310CT89
06NOV89
12NOV89
1SNOV89
24NOV89
30MOV89
060ECS9
120EC89
24DEC89
05JAN90
17JAN90
WEEK ID
DAY NO.
1
6
4
2
7
5
3
1
6
4
2
7
5
3
1
6
4
2
7
2
1
7
6
5
4
3
2
1
7
6
5
4
3
1
6
4
0670
0682
0702
0711
0725
0741
0759
0773
07970
0812
0823
0840
0853
0870
08850
0903
0915
0929
0941
0979
0994
0999
10090
1017
1021
1032
1041
1046
1061
1065
1078
1084
1097
1116
11260
1146
LOT
15
30
30
30
30
30
32
32
32
32
32
35
35
35
35
35
39
39
39
39
39
42
42
42
42
42
42
42
42
42
42
11
11
11
46
46
CONC
TUBE1
1.02
0.61
1.21
1.73
2.19
0.54
1.05
1.00
1.05
0.92
1.13
0.61
1.11
0.91
1.15
1.99
1.70
0.78
1.24
2.48
1.11
1.59
1.13
2.32
0.81
1.43
0.72
0.89
0.76
0.98
3.03
1.76
1.55
2.71
2.77
1.66
(ppbv)
TUBE2
0,75
-999
1.70
1.78
1.48
0.86
0.89
0.99
1.09
0.86
1.37
0.60
1.32
1.22
1.03
2.43
1.75
0.81
1.22
2.35
0.92
1.58
1.27
2.67
1.06
1.22
1.64
0.86
0.65
0.78
3.26
1.40
1.91
2.61
2.88
1.98
SITECODE«U2KS
ACETALDEHYDE
PURITY
TUBE1
0.939
0.902
0.932
0.932
0.916
0.821
0.907
0.984
0.994
0.996
0.997
0.991
0.993
0.986
0.989
0.991
0.994
0.990
0.989
0.996
0.998
0.989
0.987
0.998
0.973
0.999
0.946
0.986
0.989
0.985
0.991
1.000
0.982
0.971
0.973
0.954
TUBE2
0.857
0.827
0.919
0.941
0.947
0.877
0.889
0.979
0.976
0.997
0.993
0.981
0.997
0.998
0.998
0.999
0.997
0.993
0.998
0.999
0.983
0.999
0.971
0.998
0.990
0.987
0.994
0.958
0.957
0.993
0.996
0.992
0.996
0.952
0.991
0.922
CONC (ppbv)
TUBE1
0.76
0.49
0.75
0.76
2.00
-999
0.52
0.69
-999
0.47
1.00
0.59
0.83
0.80
0.96
1.06
0.90
-999
1.21
3.24
0.97
1.08
0.84
1.86
0.74
0.80
0.99
1.09
-999
0.47
1.30
1.10
1.21
2.41
1.25
0.96
TUBE2
0.92
0.56
0.65
0.78
1.69
0.45
0.61
1.01
0.51
0.90
1.17
0.50
0.89
0.76
1.00
1.00
1.38
-999
0.67
3.35
0.84
0.98
0.88
1.71
0.81
0.86
1.18
1.08
0.53
-999
1.90
1.34
1.26
1.94
1.52
1.21
PURITY
TUBE1
0.986
0.925
0.915
0.897
0.960
0.810
0.922
0.992
0.952
0.986
0.978
0.983
0.928
0.965
0.966
0.911
0.996
0.993
0.883
0.989
0.994
0.996
0.994
0.957
0.984
0.937
0.994
0.871
0.927
0.957
0.926
0.938
0.912
0.797
0.953
0.876
TUBE2
0.918
0.810
0.921
0.889
0.956
0.813
0.922
0.973
0.935
0.996
0.971
0.913
0.976
0.959
0.976
0.933
0.999
0.977
0.985
0.996
0.943
0.992
0.950
0.987
0.985
0.845
0.984
0.997
0.966
0.932
0.907
0.972
0.981
0.992
0.983
0.996
ACETONE
CONC (ppbv)
TUBE1
1.93
0.75
1.07
1.21
3.09
1.83
1.47
4.48
2.45
3.58
2.63
0.83
2.16
1.40
1.79
3.07
1.79
3.46
2.09
0.80
3.36
1.31
6.60
1.59
1.75
1.31
2.23
3.99
1.78
2.57
3.27
2.67
1.08
2.13
3.46
3.07
TUBE2
1.72
0.82
1.57
1.31
3.35
1.75
1.59
4.39
2.07
3.31
2.17
0.59
2.49
0.72
1.85
3.05
1.93
3.50
1.86
-999
3.23
1.65
5.46
1.17
1.83
1.61
2.86
3.78
1.30
2.41
3.41
2.51
0.71
2.24
3.52
4.01
PURITY
TUBE1
0.901
0.946
0.918
0.931
0.913
0.847
0.859
0.898
0.934
0.967
0.806
0.667
0.814
0.774
0.817
0.810
0.817
0.814
0.813
0.480
0.815
0.811
0.521
0.841
0.668
0.816
0.921
0.996
0.915
0.931
0.452
0.982
0.911
0.963
0.945
0.854
TUBE2
0.892
0.977
0.878
0.924
0.871
0.806
0.848
0.931
0.934
0.976
0.818
0.667
0.895
0.797
0.786
0.934
0.800
0.813
0.818
0.927
0.506
0.515
0.492
0.963
0.814
0.629
0.474
0.624
0.925
0.922
0.538
0.518
0.939
0.991
0.865
0.920
"-999" indicates concentration below analytical  detection  limit (ADD.
"." indicates  invalidated data.
                                                   C-15
-------
-------