SEPA
United States
Environmental Protection
Agency
Office of Air Quality
Planning and Standards
Research Triangle Park, NC 27711
EPA 453/N-93-014
October 1993
Control
T echnology NEWS
Center
Volume 5. No. 4
A JOINT EPA / STAPPA / Al APCO PROJECT
October 1993
STATISTICAL
RANKING REPORT
ADDED TO BUS
By Jo Ann Kerrick
ViGYAN Inc.
The RACT/BACT/LAER Clearing-
house (RBLC) has added a Statistical
Ranking download format to the RBLC
Information System (BUS) BBS. Forthe
pollutant and process set selected, this
new ranking feature will tell the user the
range of emission limits (max./min.), av-
erage emission limit, and list determi-
nations in rank order based on strin-
gency. As with all of BLIS download
formats, users must first build the selec-
tion criteria and then search BLIS for
matching facilities, processes and pol-
lutants. Users can combine any of 23
searchable fields in theircriteria. As long
—!*i
RACT BACT
LAER
^Clearinghouse!
; mm)
Lr
- .
A
as there is at least one matching record,
users can choose from any of the stan-
dard download formats. The new Statis-
tical Ranking report, however, is differ-
ent in that it can only be used if the subset
meets several specific requirements.
The Ranking report presents emis-
sion limits sorted from most to least strin-
gent. This ordering is useful only if all of
the emission limits are for comparable
processes and are expressed in the
same units. Remember, it makes no
sense to compare apples and oranges.
Standard units for emission limits have
been or are being established in BLIS to
allow meaningful comparisons of con-
trol technology determinations. The
Statistical Ranking report is based on
these values. However, the stan-
dard emission unit is not one of
the searchable fields in BLIS. So
how do you build a query for the
Ranking report? Think about
what you want to compare -- the effec-
tiveness of different control technologies
as applied to a single pollutant emitted
from a particular process. It's unlikely
that you'd be comparing emissions of
(continued page 2)
A IR W AVES
By Bob Blaszczak
CTC/OAQPS
Wow! Where did the summer go? For that matter, where
did FY93 go? For us in the Fed it's a new year; FY93 ended
September 30, 1993. You have kept us very busy - about
30,000 accesses to CTC services in FY93. That's double the
FY92 level of activity, which was 1.8 times the FY91 level, etc.,
etc
CTC resources are declining buttheprogram keepsgrow-
ing at an extraordinary rate. No wonder the seasons and years
are flashing by me. I feel like the guy in the movie "The Time
Machine." But, unlike the guy riding the time machine in the
movie, I seem to be growing older at an accelerated rate
compared to the world around me. Since time flies when you're
having fun, this must be fun.
We're getting a number of requests for co-funded, coop-
erative projects from state agencies. This may be a good way
for all of us to leverage our limited resources. However, these
efforts do require a lot more coordination and planning than the
typical do-it-yourself CTC projects. We are eager to work with
you on these joint ventures, but do allow extra time for coordi-
nation activities. Get your requests in early! The CTC Steering
Committee has already approved projects to be funded with
FY94 funds and is considering others. Last year we committed
all CTC funds by June. That's likely to move up to April or May
in 1994.
Since the Clean Act Amendments of 1990 opened CTC
services to "others" (i.e., non-government/private sector), our
client base has changed dramatically. We have gone from
almost exclusive service of state and local air pollution control
agency staff to a client base which is more than 60% "others."
This is based on records of HOTLINE calls and access to the
CTC and RACT/BACT/LAER Clearinghouse bulletin boards.
In addition, the numbers of others using the CTC is still
increasing while government agency calls have leveled off.
The CTC's primary goal is still to serve our state and local
agency callers. We don't want to loose sight of that fact in spite
of the large and ever-increasing numbers of "others" accessing
(continued page 2)
-------
STATISTICAL
RANKING
(continued from page 1)
N0X from a boiler with VOC emissions
from a paint spray booth. Build your
query to describe the process and pollut-
ant in which you're interested. You must
specify a single process code in the
query. You probably will want to refine
this further by using the word search
capability forthe process name. Finally,
specify the pollutant name.
Figure 1 illustrates the Standard
Query screen for a complete search cri-
teria. Notice that the search criteria can
be completely specified using the first
subset. If you want to further reduce your
subset (say for a single state), you can.
When the Statistical Ranking report is
selected from the Download Format
menu, BLIS automatically verifies that
the subset contains a single process
code and a single pollutant. If it does not,
you will be prompted to respecify the
search criteria.
Figure 2 shows a sample of the
Statistical Ranking report. At the top, it
recaps information on your query and
presents statistics based on the stan-
dard emission limits. Next is the detailed
section which lists information about
each facility/process and the standard
emission limit for
the selected pollut-
ant. The report is
sorted by emission
limit. A facility that
has several se-
lected processes
may appear in two
different places in
the report, depend-
ing on the emission
limits.
Some facilities
and processes in
the subset may not
have a value for the
standard emission
limit. These facili-
ties/processes are
not included in the
first part of the re-
port. However, be-
cause they are in
PROTYPE = 11.004 AND
PROCESS $ BOILER AND
POLLUTANT= NOX
the subset, they may
contain useful infor-
mation. The second
part of the Statistical
Ranking report (not
shown here) lists
these facilities/pro-
cesses along with
their primary emis-
sion limits and units.
Records are grouped
by emission unit to fa-
cilitate comparison of
the emission limits
and ranked. Both
parts of the report
contain a BLIS ID
number for reference
to the complete deter-
mination for more de-
tailed information.
The Statistical Ranking report
should serve as a valuable reference or
a starting point for users making RACT,
BACT, or LAER determinations. Take
advantage of this significant new capa-
bility and be sure to watch the alerts on
the BLIS BBS for information on new
standard units as they are established.
STANDARD SEARCH (CREATE SUBSET) DATE: 09/09/93
Currently Active Subset :1 Criterion Being Selected :3
Add Another Search Criterion
Respecify the Search Criteria
Save the Criteria and Perform Search
Exit without Saving
Enter
Option
Enter the appropriate letter to continue
or stop the search
for HELP
REPORT DATE: 08/31/93 RANKING BY STANDARD EMISSION LIMIT PAGE 1
Process Type: 11.004 Multiple Fuels Combustion
Pollutant: NOX
Standard Unit: LB/MMBTU
Processes/Pollutants Meeting Criteria: 36
Processes/Pollutants Not Included: (see Note) 11
Average lor Processes/Pollutants: 0.1759
Minimum tor Processes/Pollutants: . 0.0500
Maximum tor Processes/Pollutants: 0.6000
Permit
BLISID Date Facility / Process
Emission
Umit
WI-0065 01/12/93 APPLETON PAPER, INC.
BOILER, NATURAL GAS FUEL
0.0500
WA-0109 11/04/92' BOEING AEROSPACE (PLT 2)
BOILER. STEAM (2) - AIRPLANE MANUFACTURING
0.0900
WA-0272 09/06/91 BOEING DEFENSE & SPACE GROUP
BOILERS (2)
PLANT II
0.0900
WA-0050 04/02/92 BOEING COMMERCIAL AIRPLANE-FREDERKSN
BOILERS (2) 0.1000
Figure 1 - Completed Standard Query Menu
AIRWA VES
(continued from page 1)
our services.
We need your help to insure that we
stay on target. We would like to hear
from you (state and local agency staff)
about the job we're doing. Please call the
CTC HOTLINE and let us know if we are
meeting your needs or what we could do
tobetterserveyou. We'd appreciate
your input.
We have included MACT and
CTG scheduling information in this
edition of the NEWS. We hope to
improve on this in future editions and
also plan on adding this information
as downloadable file on the CTC
BBS. The new OAQPS project
tracking system which is being
implemented this Fall should help a
lot in this effort.
We'll be back with our annual
CTC product order form edition of
the NEWS in January 1994. It looks
like a lot of new, long-awaited prod-
ucts will be available at that time.
Have a good Fall and holiday sea-
son!
Figure 2 - Sample of Statistical Ranking Report
CTC News page 2
-------
Evaluation of the
POLY AD® FB Air
Purification and Solvent
Recovery Process for
Styrene Removal
By Bobby E. Daniel
CTC/AEERL
The control of styrene is a major
concern for many areas of the country.
One area of styrene emissions is the
manufacture of shower stalls and bath-
tubs. There are approximately 200 of
these plants operating in the U.S. emit-
ting uncontrolled styrene to the atmo-
sphere. The CTC was contacted by the
firm of Weatherly, Inc. to arrange a field
evaluation of a system (the POLYAD®
FB process) that is presently being used
100
98 -
96
94 -
92 -
90 -
88
86
84
82
V
\
Total Hydrocarbons
Styrene
Data gaps: No Styrene measured
80
T
I
T
i
Spray Period
Day
1 2 3
November 3
1 2 3
November 4
Average hydrocarbon and styrene removal
efficiency for each period of spraying
in Europe to control styrene emissions to
the atmosphere. This process uses a
fluidized bed adsorption system with
macro porous polymer particles as the
adsorbent. The adsorbent supposedly
has excellent adsorption properties, is
easy to regenerate, has a long lifetime, is
insensitive to high moisture airstreams
and has no apparent catalytic effect on
solvents. In the POLYAD® FB process
the adsorbent continuously migrates
from an adsorption section to a desorp-
tion section where the polymer particles
are regenerated and the solvent (sty-
rene) is condensed and recovered.
The POLYAD® FB mobile unit was
evaluated in October 1992, at a fiber-
glass shower stall - bath tub manufactur-
ing plant operated by Eljer
Plumbingware located in Wilson, NC.
The mobile unit was configured to treat a
portion (Approx. 200 cfm) of the air ex-
haust from a
gelcoat spray
booth at the Eljer
facility. The sty-
rene removal effi-
ciency of the
POLYAD® FB de-
vice was measured
using total hydro-
carbon (THC) ana-
lyzers equipped
with Flame Ioniza-
tion Detectors
(FID) to determine
total hydrocarbon
levels on a continu-
ous basis at the in-
let and outlet of the
device. Charcoal
filled sampling
tubes were used to
collect samples of
Volatile Organic
Compounds
(VOC's) at the inlet
and outlet of the de-
vice over time peri-
ods ranging from
one to two hours.
Styrene levels in
the inlet and outlet
gas streams were
quantified by sub-
sequent chromato-
T
1 2 3
November 5
graphic analysis (FID detection) of the
VOC's retained in the charcoal filled
sampling tubes. Preliminary measure-
ments made on a pre-test survey re-
vealed that virtually all (>98%) of the
organic material exhausted from the
gelcoat spray booth was styrene mono-
mer.
The POLYAD® FB device demon-
strated that the process could achieve
styrene removal efficiencies greater
than 90 percent. The tests were per-
formed over a three day time period.
During the first day of testing, when
molds were being sprayed, the unit oper-
ated at a styrene removal efficiency of 94
percent orgreater. Duringthelastdayof
testing the unit achieved an average
styrene removal efficiency of greater
than 96 percent. The CTC report con-
tains all the data from the tests a long with
a section detailing the cost associated
with applying the POLYAD® FB system
for styrene removal at the Eljer facility.
Call the CTC HOTLINE or use the
CTC BBS to order a copy of this report.
Editor Comment:
In preparing the CTC report on
fiberglass boat manufacturing, the
CTC became aware of a need to
styrene. Since that time the CTC
a
These efforts are intended to pro-
trol agencies. The use or mention
CTC News page 3
-------
CTC COMPLETES STUDY ON OPEN
BURNING OF FIBERGLASS
MATERIALS
By Paul Lemieux
AEERL
The exposure of persons to fiberglass combustion emis-
sions from structural fires, fires at waste landfills, and fires at
demolition sites has become an issue of increasing concern.
Prompted by a request from the State of Alaska, EPA's Air and
Energy Engineering Research Laboratory (AEERL) performed
a CTC-funded study to identify and quantify a broad range of
pollutants that are discharged from the open combustion of
fiberglass and to report those emissions relative to the mass of
fiberglass material combusted.
Small samples of two types of fiberglass materials (repre-
senting the boating and building materials industries) were
combusted in a controlled outbuilding designed to simulate an
open burning process. Volatile, semivolatile, and particulate-
bound organics were collected and analyzed by gas chroma-
tography/mass spectrometry (GC/MS). The emphasis of these
analyses was on the quantification of hazardous air pollutants
(HAPs) listed in Title III of the Clean Air Act Amendments of
1990 (CAAA), although further efforts were made to identify
and quantify other major organic components. Additional
sampling and analysiswasdoneforhydrogen chloride, particu-
late-phase metals, and respirable fibers. Fixed combustion
gases (carbon dioxide, carbon monoxide, nitric oxide, oxygen,
and total hydrocarbons) were monitored continuously through-
out the test period.
Analytical results show substantial emissions of a large
number of pollutants including arsenic, benzene,
benzo(a)pyrene, carbon monoxide, dibenzofuran, lead, naph-
thalene, particulate, phenanthrene, phenol, styrene, and tolu-
ene. The final report titled "Characterization of Air Emissions
from the Simulated Open Combustion of Fiberglass Materials"
is scheduled for release in October 1993. Call the CTC
HOTLINE or use the CTC BBS to order a copy of the report.
MACT, CTG, & NSPS
SCHEDULES **
Control Iechnology Center N E WS
The CTCNEWS is a quarterly publication of (he U.S. EPA's Control Technol-
ogy Canter (CTC). The CTC is an informal, easy-to-use. no cost, technical
assistance service (or ail State and focal (S/l) air pollution control agency and EPA
Regional Office staffs. For others, some services may be on a cos! reimbursable
basis. The CTC offers quick access to EPA experts and expertise via (he CTC
HOTLINE and the CTC Bulletin Board, and in-depth technical support through
source specific E nginaerlng Assistance Projecls or more generic Technical Guid-
ance Projects. The CTC i s operated by (he Air and Energy Engineering Research
Laboratory, Olfice of Research and Development, and the Emission Standards
Division , Office of Air Qualify Planning and Standards in Research Triangle Park.
North Carolina.
If you have any air pollution emission or control questions, or would lite more
information aboul the CTC and the types of technical assistance available, CALL
THE CTC HOTLINE I
(919)541-0800
Publication of the CTCNEWS does not signify that the contenls necessarily
reflect (he views and policies of the U. S. EPA, nor does the mention of Irade names
yor commercial products constitute endorsement or recommendation (or use. ^
MACT STANDARD
Proposal
Final
Aerospace (coatings)
7/31/94
7/31/95
Arch./lnd. Coatings
Under Regulatory Neg.
Asbestos
7/94
5/95
Asbestos Litigation
* 1/01/93
12/30/93
Benzene Waste NESHAP Lit.
* 3/05/92
12/30/93
Chromium Electroplating
11/30/93
11/23/94
Coke Ovens
*12/04/92
9/30/93
Commercial Sterilizers
2/28/94
11/23/94
Degreasing (Hal. Sol. Clean.)
11/15/93
11/15/94
Dry Cleaning
*12/09/91
9/13/93
Haz. Organic NESHAP (HON)
*12/03/93
2/28/S4
Haz. Waste TSDF Phase II
* 7/22/91
2/28/94
Haz. Waste TSDF Phase III
Schedule under revision
Ind. Cooling Towers
*8/12/93
7/31/94
Magnetic Tape Coating
2/28/94
11/23/94
Marine Vessel (load/unload)
4/30/94
4/30/95
Mun. Waste Comb. II & III
Schedule under revision
Off-site Waste Operations
2/28/94
2/28/95
Petroleum Refineries
6/30/94
6/30/95
Polymers & Resins I
9/6/94
9/5/95
Polymers & Resins II
4/30/94
2/28/95
Polymers & Resins III
12/30/94
12/30/95
Polymers & Resins IV
6/30/94
6/30/95
Pulp & Paper (combustion)
6/30/S4
6/30/95
Pulp & Paper (non-comb.)
12/30/94
12/30/95
Secondary Lead Smelters
5/31/94
5/31/95
Shipbuilding (coatings)
7/30/94
7/30/95
Stage I Gasoline Distr.
1/31/94
11/23/94
Wood Furniture Coating
Under Regulatory Neg.
CTG
Aerospace Coatings
Industrial Wastewater
Offset Lithography
Plastic Parts Coating
Shipbuilding (coating)
SOCMI Batch Processes
SOCMI Dist. & Reactors
VOL Storage
Wood Furniture Coating
Proposal
7/31/94
11/30/93
11/30/93
5/30/94
7/31/94
Final
7/31/95
5/30/94
11/30/94
5/30/95
7/31/95
Project on hold
*12/12/91 *8/31/93
9/30/93 9/30/94
Under Regulatory Neg.
NSPS Proposal Final
Landfill NSPS & 111 (d) * 5/30/91 11 /30/93
Med. Waste Inc. NSPS & 111 (d) 3/30/94 8/31/95
NOx NSPS Revision (407(c)) 5/30/94 5/30/95
S02 NSPS Revision 5/30/94 5/30/95
SOCMI Reactor NSPS * 1/01/90 * 8/31/93
SOCMI Sec. Sources NSPS 8/31/94 8/31/95
NOTE: * indicates date completed
** All scheduled dates are tentative and subject to
change without notice.
yg
CTC News page 4
-------
SMALL BUSINESS UPDATE
Deborah Elmore, CTC/OAQPS
National Workshops
Scheduled
(Just a Reminder!)
• SBAP Technical Assistance
Conference
The First Annual National Small
Business Technical Assistance Confer-
ence will be held during January 1994, in
Research Triangle Park (RTP), NC. This
conference is being hosted by the CTC,
as part of our role as focal point of the
Federal SBAP. The workshop is in-
tended primarily for State SBAP person-
nel, and will focus specifically on issues
and activities related to the technical
assistance function.
If you have any questions, com-
ments, or suggestions on agendatop-
ics, please contact Deb Elmore at
(919) 541-5437. Stay tuned for further
information, and see you in January!
• SBAP Ombudsman
Conference
The First Annual State Small Busi-
ness Ombudsman Conference is sched-
uled for November 3-4, 1993 in Wash-
ington, DC. For more information on this
conference, please call Karen Brown at
(703) 305-5938.
SBAP Bulletin Board
System (BBS) -
INPUT DATA NEEDED!
The SBAP BBS is scheduled to be
available in the Fall of 1993. This system
will be the primary mechanism for States
and EPA to share information on small
business activities and available materi-
als. A number of State SBAPs have
already indicated that they have several
items to share with their colleagues.
We would like to have as much infor-
mation as possible on the SBAP BBS
when it comes on-line. To do this, we
need a little help from the State SBAPs.
If you have any items you wish to have
placed on the SBAP BBS, please send
us the following information:
• Subject of materials (specific industry,
general guidance, etc.)
• Type of information available (bro-
chure, report, video, opportunity for a
coordinated effort, etc.)
• Short description of materials/project
• Status of project (early planning, under
development, available for distribution,
etc.)
• Contact, agency name, and telephone
number for more information.
We would also like to include read-
able/downloadable files on the SBAP
BBS. If you can provide a floppy disk with
the materials you wish to share in an
ASCII text file, we can make it available
directly on the SBAP BBS. This would
save us all a number of phone calls and
questions, as well as provide detailed
information to those who need it as
quickly as possible. Once the SBAP
BBS is well established, new materials
for addition to the system will be submit-
ted directly through the BBS itself.
Help us get the new SBAP BBS off
to a quick and useful start! Send your
contributions to:
Deb Elmore
(MD-13)
Federal SBAP
Coordinator
U.S. EPA
RTP, NC 27711
Moms
Bakery
APPLIANCE
REPAIR
SERVICE
Clyde's
Copies
Handy Dry Cleaners
Sprtaf
Special - 5 Sh&u
for Out Dollar
HoU rost
Color
Copies
Too!!!
BtuuH
(heck
OOPS! WE GOOFED!
Sorry, but the document entitled
"Guidebook on Explaining
Environmental Rules to Small
Businesses"
has been delayed! I know we announced that it would be available some time ago,
but it's publication has been unavoidably delayed. If you placed an order, rest
assured that we still have it and you will get a copy as soon as it is printed.
Thanks for your help!
CTC News page 5
-------
CTC EXPERT:
BILL NEUFFER
By Lisa Ftorer
Acurex Environmental Corporation
Don't let Bill Neuffer's quiet, some-
what reserved demeanor fool you—
when it comes to NOxcontrol, he hasalot
to say. Bill's work at EPA's Office of Air
Quality Planning Standards (OAQPS),
Industrial Studies Branch, has spanned
more than 10 years. During that time, he
has become one of the CTC's experts on
NOx emissions and control technologies.
Bill grew up in seemingly different
parts of the country—New York and
South Carolina. OptingfortheSouth, he
attended Virginia Tech where he re-
ceived his bachelor's of science in math-
ematics. After receiving his degree, Bill
spent four years with the Virginia public
school system teaching junior high and
high school level math. Finding the pro-
fession somewhat unrewarding, Bill
spent three years with the Virginia Air
Pollution Control Board and then de-
cided to pursue his master's degree. In
1977, he received his master's of engi-
neering from the University of Alabama,
with a concentration in environmental
engineering. Bill worked for a year as the
supervisor of the Pollution Abatement
Branch at the Naval Supply Center in
Portsmouth, VA.
During his time at the
Virginia Air Pollution Con-
trol Board, he had traveled
to Research Triangle Park
for several classes, and
because he liked the area
and had some contacts, he
decided to seek a position
with EPA. In 1980, he was
hired as an environmental
engineer. Bill served as
lead engineer for the de-
velopment of New Source
Performance Standards and National
Emission Standards for Hazardous Air
Pollutants. He was involved with
projects such as metallic minerals, min-
eral dryers/calciners, small boilers, zinc/
zinc oxide smelting, cadmium refining,
and zinc and sodium hydroxide emis-
sions from various industries and mu-
EQUIPMENT LEAKS PROTOCOL REVISED
By Bob Blaszczak, CTC/OAQPS
The new document "Protocol for Equipment Leak Emission Estimates," EPA-
453/R-93-026, has recently been issued by OAQPS. It supersedes and replaces
"Protocols for Generating Unit-Specific Emission Estimates for Equipment Leaks of
VOC and VHAP," EPA-450/3-88-010. The new document updates all of the SOCMI
emission factors and correlations in the old protocol. All estimates of equipment leaks
must use the new factors. In addition, the new document includes emission factors
for refineries and natural gas plants.
In order to cut costs, free hard copies will not be available from OAQPS, but the
document is now available for down loading to your computer on the CHIEF BBS.
CHIEF is part of the OAQPS Technology Transfer Network (TTN) and can be
accessed in the same manneras the CTC BBS. See the back page of this news letter
for access information. Just select CHIEF instead of CTC from the TTN menu. You'll
find the document under CHIEF/AP-42/Q & A. If you still need a hard copy, you can
order it through NTIS by calling (800) 553-6847 and asking for PB93-229219.
If you have technical questions concerning this document, call David Markwordt
at (919) 541 -0837. If you have questions concerning the C HIEF BBS and down load-
ing this document, call Michael Hamlin at (919) 541 -5232. ^
nicipal waste combustors. He evaluated
air pollution control equipment, emission
test data and industrial processes to
develop emission standards and emis-
sion factors. He also gave public presen-
tations before the National Air Pollution
Control Techniques Advisory Commit-
tee.
Bill worked for a year at the U.S.
Department of Energy (DOE) in 1989.
As an environmental engineer there, he
had a whirlwind of responsibilities. He
interpreted air pollution
and asbestos rules and
regulations to help en-
sure compliance for all
DOE Oak Ridge, TN fa-
cilities; reviewed con-
struction and operating
permit applications for
technical regulatory ac-
curacy; and was respon-
sible for many other
tasks and projects. He
was also always on-call
for accidental environmental releases.
Bill is very happy to be back with
EPA, where he returned within a year.
He now works to develop Alternative
Control Techniques (ACT) documents
for NOx control of which 9 have been
developed. He currently oversees the
work of four contractors. He evaluates
the documents in terms of technical and
cost feasibility. These technically sound
documents provide guidance for states
to develop their own regulations. Re-
cently, Bill was requested to review regu-
lations proposed by the United Nations.
Phone calls are a regular part of Bill's
day many of which are CTC Hotline calls
concerning NOx control technologies.
Bill finds the Hotline to be a useful tool for
sharing technologies. He receives calls
from state officials, industry, and all
those curious as to whether they've de-
veloped an improved method of control.
Among his credits are a Special
Achievement Award in 1982, Superior
Performance Award in 1991, and a Spe-
cial Service Award in 1992. Bill has
coauthored four papers, two of which
were presented at the 1993 Joint Sym-
posium of Stationary Combustion NOx
Control.
Bill finds enjoyment and relaxation in
sports and music. Weather permitting,
he swims daily with his 8-year-old
daughter, Katherine, and plays tennis
several times a week. Bill keeps his
home in Bahama, where he lives with his
wife Patricia, piped with the sounds of
soothing country from Mary Chapin-Car-
penter and Emmylou Harris as well as
rock from classics like Neil Young.
CTC News page 6
-------
TECH NOTEBOOK
Does Your UNZIPper Get
Stuck?
By Lyndon Cox
Senior Environmental Employee,
AEERL
We at the Hotline use PKZIP to
compress our downloadable files be-
cause the shorter files download quicker
and therefore reduce telephone traffic
congestion and your telephone bills.
Some of our Hotline callers have had
difficulty in UNZIPping our compressed
files. Whatcould be the problem? Itwas
a mystery to us because we were not
having problems. To solve the mystery,
we had to follow clues.
Clue number one: Most of these
calls have been for SAGE, which was
recently distributed as a compressed
ZIP file.
When installed according to the in-
structions in SAGE.TXT, SAGE has
worked smoothly. This has been done
numerous times.
Clue numbertwo: The Hotlinecall-
ers have not always read the instruc-
tions.
Of course, while some people read
the instructions, they fail to observe the
details. Please read the instructions
carefully and follow them explicitly.
SAGE needs to be loaded into its own
directory on the root drive (i.e.,
C:\SAGE). Three files must be there:
SAGE.ZIP, PKUNZIP.EXE, and
SAGE.TXT. You UNZIP into the same
directory.
One cause of ZIP and UNZIP prob-
lems has been the use of improper syn-
tax in decompressing the files.
TIP-The ZIP file must be designated by
the first pathname, as in:
PKUNZIP A:SAGE.ZIP C:\SAGE
If you do this, there should be no prob-
lem.
Clue number three: doing this has
not always solved the problem.
Clue number four: A caller asked
which version of PKUNZIP we used.
While we now use version 2.04g, we
used version 1.1 until recently, and we
discovered that the caller used a still
earlier version. Some of the SAGE files
PKZIPped under version 1.1 were not
decompressing for the caller. Files
PKZIPped with version 2.04g will not
UNZIP with any previous versions. If you
get a "Warning" message, you need to
use PKUNZIP version 2.04g. Please
note that PKUNZIP.EXE version 2.04g
is now available for download from the
BBS. Use it. Try to use only the highest
upgrade version of PKUNZIP. If you
have an archives of compressed files for
backup, either keep a copy of the appro-
priate PKUNZIP with them or upgrade
the archives to PKZIP version 2.04g.
Note: PKUNZIP version 2.04g will UN-
ZlPfiles ZIPped by all previous versions.
Of course, an error in transmission
when downloading can also lead to a
problem in PKUNZIPping. That is one
reason for using an errordetecting (if not
correcting) code such as XMODEM in
downloading from the BBS.
If you are having problems with
PKUNZIP, read the instructions, follow
them explicitly, avoid errors in the down-
load, watch your syntax, and use the
highest version. That should get you
ZIPping along again.
'93 RBLC
SUPPLEMENT
AVAILABLE!!
Just when you thought that the
RACT/BACT/LAER Clearinghouse
(RBLC) would never publish an-
other supplement, we put one to-
gether and get it out of here! Yes,
call the newspapers and alert the
media, the 1993 Supplement to the
1990 edition of the RACT/BACT/
LAER Clearinghouse: ACompila-
4j » _ _i Prtnlrnl To/*HnnlArt\/
uon wi vQiiirot i evnnuivyy
minations is here!. If you are a
DDI C* /»mm pft/HinnaI Cfofo.
nOUv Uwlllavi i o i?
local air pollution control agency, a
•nnu nf the two volume document
WVUV WI *»»>• *»»» » VIM'MV II
will be mailed to you in October
1993. But remember, the entire
RBLC database is available on the
OAQPS TTN BBS (BUS BBS) so
we are only printing a limited num-
ber of copies. These ever so
_ ^.. „Li /.fjAv J #. | Will hft Hjc.
vVWyru d i Uvvw * i >^i» ***'
trihtitAri ac np^dpd* but wh£n th©r
-------
CTC ASSISTANCE
No cost assistance to staff of State and Local agencies and
EPA Regional Offices on air pollution control technology
issues.
CTC HOTLINE: CALL (919) 541-0800 to access EPA expert
staff for consultations, references to pertinent literature, or
access to EPAtechnical data and analyses. Noquestion is too
simple!
ENGINEERING ASSISTANCE PROJECTS: If you need in-
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problem, caJHhe HOTLINE or write the CTC. EPA staff and
contractors are available forshort-term projects such as review
of proposed or existing control technology applications.
Projects are subject to CTC Steering Committee approval.
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number of similar HOTL IN E calls or a joint request from a group
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dem to access the CTC Bulletin Board. Set communications
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ogy Transfer Network (TTN).
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(FSBAP): Call the CTC HOTLINE to access the FS8AP. The
CT C is the focal point for coordination of efforts among the four
EPA centers participating in the program. The Federal pro-
gram is intended to support State Small Business Assistance
Programs, as required by the Clean Air Act.
RACT/BACT/LAER CLEARINGHOUSE (RBLC): The RBLC
database (BLIS) is available on the OAQPS TTN BBS. (See
the CTC BBS for connection information.) The Clearinghouse
provides summary information for control technology determi-
nations made by permitting agencies.
GLOBAL GREENHOUSE GASES TECHNOLOGY TRANS-
FER CENTER (GGGTTC); Call the CTC HOTLINE to access
GGGTTC information on greenhouse gas emissions, preven-
tion, mitigation, and control strategies.
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