Utl_file output converted from database characterset

Question

I have a developer that is sending output to a file using utl_file. Here is a snippet of his code:
fileHand UTL_FILE.file_type;
buffer VARCHAR2(1000);
UTL_FILE.put_raw(fileHand, UTL_RAW.cast_to_raw(buffer), TRUE);
In the database there is data such as:
Stéphanie Chéry
but in the output file it is written as:
Stéphanie Chéry
basically it is being converted to WE characterset.
This is RDBMS 11.2.0.2 64bit running on RHE 5. The linux user account executing the proc that generates the output file has NLS_LANG=AMERICAN_AMERICA.AL32UTF8 in it's environment. We don't understand why the characterset is being converted. he has tried using the NCHAR functions of UTL_FILE and still gets the same results.
Any idea what our issue is?
Below is SELECT * FROM NLS_DATABASE_PARAMETERS from the database
"PARAMETER","VALUE"
"NLS_LANGUAGE","AMERICAN"
"NLS_TERRITORY","AMERICA"
"NLS_CURRENCY","$"
"NLS_ISO_CURRENCY","AMERICA"
"NLS_NUMERIC_CHARACTERS",".,"
"NLS_CHARACTERSET","AL32UTF8"
"NLS_CALENDAR","GREGORIAN"
"NLS_DATE_FORMAT","DD-MON-RR"
"NLS_DATE_LANGUAGE","AMERICAN"
"NLS_SORT","BINARY"
"NLS_TIME_FORMAT","HH.MI.SSXFF AM"
"NLS_TIMESTAMP_FORMAT","DD-MON-RR HH.MI.SSXFF AM"
"NLS_TIME_TZ_FORMAT","HH.MI.SSXFF AM TZR"
"NLS_TIMESTAMP_TZ_FORMAT","DD-MON-RR HH.MI.SSXFF AM TZR"
"NLS_DUAL_CURRENCY","$"
"NLS_NCHAR_CHARACTERSET","AL16UTF16"
"NLS_COMP","BINARY"
"NLS_LENGTH_SEMANTICS","CHAR"
"NLS_NCHAR_CONV_EXCP","FALSE"
"NLS_RDBMS_VERSION","11.2.0.2.0"

Answer 1

1076:jobsub@elver:/home/jobsub> env
_=*8512*/bin/env
CLASSPATH=
COBDIR=/opt/FJSVcbl64
COBPATH=/home/jobsub:/app/sct/banner_du/links:/app/sct/banner_du/general/exe
COBPREF=perl /app/sct/banner_du/links/banfjsv.pl
COBSUFX=
DATAFILE_HOME=
DATA_HOME=/app/sct/dataload/DUSIMS
DISPLAY=localhost:10.0
G_BROKEN_FILENAMES=1
HISTSIZE=1000
HOME=/home/jobsub
INPUTRC=/etc/inputrc
LANG=en_US.UTF-8
LC_ALL=en_US.UTF-8
LC_COLLATE=en_US.UTF-8
LC_CTYPE=en_US.UTF-8
LC_MESSAGES=en_US.UTF-8
LC_MONETARY=en_US.UTF-8
LC_NUMERIC=en_US.UTF-8
LC_TIME=en_US.UTF-8
LD_LIBRARY_PATH=/app/oracle11/product/11.2/lib:/app/oracle11/product/11.2/lib32:/opt/FJSVcbl64/lib:/opt/FJSVXbsrt/lib:/opt/FJSVXmeft/lib:/app/sct/banner_du/general/exe:/usr/local/lib
LESSOPEN=|/usr/bin/lesspipe.sh %s
LOGNAME=jobsub
LS_COLORS=no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:ex=01;32:*.cmd=01;32:*.exe=01;32:*.com=01;32:*.btm=01;32:*.bat=01;32:*.sh=01;32:*.csh=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tz=01;31:*.rpm=01;31:*.cpio=01;31:*.jpg=01;35:*.gif=01;35:*.bmp=01;35:*.xbm=01;35:*.xpm=01;35:*.png=01;35:*.tif=01;35:
MAIL=/var/spool/mail/jobsub
NLS_LANG=AMERICAN_AMERICA.AL32UTF8
ORACLE_HOME=/app/oracle11/product/11.2
ORACLE_LPARGS=-Plp
ORACLE_LPPROG=lpr
ORACLE_PATH=.:/home/jobsub:/app/sct/banner_du/links:/app/sct/banner_du/admin
ORACLE_SID=DUSIMS
ORA_NLS10=/app/oracle11/product/11.2/nls/data
ORA_NLS11=/app/oracle11/product/11.2/nls/data
ORA_NLS33=/app/oracle11/product/11.2/ocommon/nls/admin/data
PATH=:/app/sct/banner_du/fixes_DUSIMS:/opt/FJSVcbl64/bin:/opt/FJSVXbsrt/lib:/opt/FJSVXmeft/lib::/app/sct/banner_du/general/exe:/app/sct/banner_du/admin:.:/app/sct/jobsub:/app/sct/dlp:/app/sct/jobsub/scripts:/usr/java/jdk1.6.0_25/bin:/bin:/usr/bin:/usr/local/bin:/usr/openv/netbackup/bin:/opt/sct/bin:/app/oracle11/product/11.2/bin:/app/sct/banner_du/links
PS1=!:$LOGNAME@$HOSTNAME:$PWD>
PWD=/home/jobsub
SHELL=/bin/ksh
SHLVL=1
SQLPATH=.:/home/jobsub:/app/sct/banner_du/links:/app/sct/banner_du/admin
SRCE_LINK=
TERM=vt100
USER=jobsub
ASTFEATURES=UNIVERSE - ucb
A__z="*SHLVL