DSHW-1993-002493 - 0901a0688013c9c7

HERCULES
'^^
"^^^^.t^
RECEIVED
JUL 0 1 1993 V
Air Quality
Hercules Aerospace Company
Space/Strategic Propulsion
Bacchus Works
Magna, Utah 84044-0098
[phone]
30 June 1993
F. Bumell Cordner
Division of Air Quality
Department of Environmental Quality
1950 West North Temple
Salt Lake City, Utah 84114-4820
DSHW TN
1993.11247
Subject: Addendum to SCREEN Modeling for Remediation of Fluorine Cylinders at
Hercules Plant 1
Dear Mr. Cordner:
On June 10, 1993 Hercules delivered a report to the DAQ conceming SCREEN
modeling for remediation of fluorine cylinders at our Plant 1 facilities. Hercules wishes to
remediate these cylinders by venting them to the atmosphere. Venting would be
accomplished by means of a small explosive charge placed on the valve of each cylinder.
SCREEN modelling included in the report delivered June 10* indicated that the fenceline
concentration of fluorine would not exceed the TLV/1(X) value of 0.016 mg/m^.
After preliminary review of this report, Mr. Bob Swart of your department
indicated that Hercules should consider two additional issues. First, the modeling conducted
to date considered only Stability Classes A through D. Mr. Swart indicated that we should
consider Stability Classes E and F even though they are primarily considered night time
conditions. Secondly, the one scenario already presented considered only the closest
fenceline distance from the fluorine area which happened to be at a lower elevation. Mr.
Swart suggested that Hercules consider additional fenceline locations that might actually be
farther away but at a higher elevation.
StabilitvClasses E and F
Modeling conducted on this effort to date only considered Stability classes A
through D as these are generally accepted daytime conditions. Stability classes E and F are
primarily night time conditions when positive vertical thermal gradients and calm conditions
lead to poor pollutant dispersion. These conditions can occur during the daytime, however,
under inversion circumstances.
For simple terrain, the SCREEN model considers only Stability classes A through
E, Stability class F is not included. The only time SCREEN considers Stability Class F is for
the single situation of complex terrain and rural conditions. Accordingly, only Stability class
E has been considered for additional modeling. The next table shows the Stability class E
model results in comparison to the modeling results previously presented:
r •
Addendum to SCREEN Modeling for Remediation
of the Fluorine Transfer Station
Page 2
SCREEN MODEL RESULTS
Stabiiity
Ciass
A
B
C
D
•ipiii
Fenceiine Boundary Standard
TLV/100
0.016 mg/m^
0.016 mg/m^
0.016 mg/m^
0.016 mg/m'
0.01 e mg/m'*
SCREEN Prediction
8 Hour Fenceiine Concentration
0.004 mg/rrP
0.004 mg/m^
0.0§4-mg7iTi^*: - '"''
0.014 mg/m^
0M9 m^trf
Onplant Exposure Limit
Distance to 0.16 mg/m'
193 meters
193 meters
269 meters
391 meters ••••••I
The modelling shows that the 8 hour fenceline concentration for fluorine under
Stability class E conditions is 0.049 mg/m^. This value exceeds the applicable fenceline
standard of 0.016 mg/m^. Since the predicted fluorine concentration is more than three times
the limit, it is concluded that the fluorine cylinders cannot be remediated under Stability class
E conditions.
As mentioned above. Stability class E conditions occur mostly at night, but can
occur during the day depending on the season. Winter inversion conditions in the Salt Lake
valley can arguably be considered Stability class E or F conditions irregardless of the time of
day because of the opaque cloud cover and cold air trapped underneath warm air. A daytime
Stability class E conditions would be considered rare in the summer or early fall because of
the high incidence of solar radiation and winds that accompany weather fronts.
There is no one to one correspondence between Stability class and clearing index.
According to the National Weather Service, the clearing index is a function of daily high
temperatures and wind speeds at the mixing height. Higher temperatures and higher elevated
wind speeds result in higher clearing indexes. It is arguable that a daytime clearing index
greater than 500 excludes Stability class E conditions. Solar radiation necessary to raise
temperatures and elevated wind speeds are both factors typical of high clearing index days but
atypical of Stability class E and F conditions. Because of this, Hercules proposes that
fluorine remediation operations occur only on days where the clearing index exceeds 500.
This provision should assure that operations will not occur on days with Stability class E or F
conditions.
Elevated Terrain
The SCREEN model considers elevated terrain above stack height as "complex
terrain." The complex terrain portion of SCREEN uses a separate modeling routine known as
the VALLEY model. It produces 24 hour average pollutant concentrations. These
concentrations have to be mathematically adjusted to obtain 8 hour concentrations which can
r
Addendum to SCREEN Modeling for Remediation
of the Fluorine Transfer Station
Page 3
then be compared to TLV values. Using the SCREEN model documentation, it is clear that
the 24 hour pollutant concentrations must be multiplied by a factor of 1.75 in order to obtain
8 hour concentrations.
The attached map shows the two additional locations considered. These points
were chosen as worst case situations because of their proximity to and elevation above the
fluorine station. Point A on the map is the location previously considered. Point B is
directiy west of the fluorine area and is some 8.5 meters higher in elevation. Point C is to
the southwest and is 51 meters higher. For comparison purposes, Points B and C were
modelled assuming both simple terrain (no elevation change) and complex terrain features.
Inputs to the model (mass flow rate, stack height, etc.) were the same as used before. The
following table presents the results of the SCREEN modeling for these points:
SCREEN MODEL RESULTS
stability
Class
D
E
Fenceline Boundary
Standard
(TLV/100)
0.016 mg/m^
0.016 mg/m'
Point A SCREEN
Prediction
(8 Hour)
0.014 mg/TT?
-
Point B SCREEN
Prediction
(8 Hour)
0.012 mg/m^
(simple terrain)
0.0064 mgW
(complex terrain)
Point C SCREEN
Prediction
(8 Hour)
0.012 mg/m'
(simple terrain)
0.0064 mg/m'
(complex terrain)
NO 11: SCREEN model documentation states that complex terrain calculations consider only
Stability Class E conditions for urban settings
Point A is 1265 meters north and 69.2 meters lower than the fluorine station, this is the
fenceline location previously considered in the original memo.
Point B is 1341 meters west and 8.5 meters higher than the fluorine station.
Point C is 1337 meters southwest and 51.2 meters higher than the fluorine station.
Actual SCREEN printouts are attached as an addendum to this letter. It is apparent
that the two different models used by SCREEN for simple and complex tertain calculations
give significantly different results. Surprisingly, the simple terrain model predicted nearly
twice the levels of pollutant concentration as predicted by the complex terrain model. In this
situation the simple terrain model appears to be more conservative. All of the predicted
fluorine concentrations are less than the fenceline standard (0.016 mg/m^). Thus the SCREEN
model predicts that the general populace will not be exposed to unacceptable levels of
fluorine at these other locations.
r
Addendum to SCREEN Modeling for Remediation
of the Fluorine Transfer Station
Page 4
This letter is considered an addendum to the report aheady submitted on 10 June of
this year. Please consult this original report for complete details on the assumptions and
procedures used for applying the SCREEN model to this situation. The original report also
contains additional background information on the fluorine station itself. If you develop any
further questions during review of this issue, please contact me at 251-3574 or Chris
Falkenberg of my staff at 251-5313.
Sincerely,
ERA/CDFalkenberg/
Attachments
'iSM^Jf^
E. Richard Anderson, Manager
Environmental Engineering and
Hygiene
r
SCREEN MODELING FOR STABILITY CLASS E
r 08:51:55
*** SCREEN-1.1 MODEL RUN ***
*** VERSION DATED 88300 ***
Fluorine Transfer Station, E Stability Class
SIMPLE TERRAIN INPUTS:
SOURCE TYPE
EMISSION RATE (G/S)
STACK HEIGHT (M)
STK INSIDE DIAM (M)
STK EXIT VELOCITY (M/S)=
STK GAS EXIT TEMP (K)
AMBIENT AIR TEMP (K)
RECEPTOR HEIGHT (M)
lOPT (1=URB,2=RUR)
BUILDING HEIGHT (M)
MIN HORIZ BLDG DIM (M) =
MAX HORIZ BLDG DIM (M) =
POINT
1.513
1
1
1
00
00
00
293.00
293.00
.00
1
.00
.00
.00
BUOY. FLUX = .00 M**4/S**3/ MOM. FLUX
*** STABILITY CLASS 5 ONLY ***
**********************************
*** SCREEN AUTOMATED DISTANCES ***
**********************************
25 M**4/S**2
*** TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES ***
DIST
(M)
100.
200.
300.
400.
500.
600.
700.
800.
900.
1000.
1100.
1200.
1300.
CONC
(UG/M**3)
5486.
1582.
765.5
462.5
315.6
232.4
180.4
145.3
120.5
102.2
88.21
77.25
68.48
'AB
5
5
5
5
5
5
5
5
5
5
5
5
5
ION
5
UIOM
(M/S)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
AT OR
1.0
USTK
(M/S)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
BEYOND
1.0
MIX HT
(M)
5000.0
5000.0
5000.0
5000.0
5000.0
5000.0
5000.0
5000.0
5000.0
5000.0
5000.0
5000.0
5000.0
100. M;
5000.0
PLUME
HT (M)
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
SIGMA
Y (M)
10.8
21.2
31.2
40.9
50.2
59.3
68.1
76.6
84.9
93.0
100.8
108.5
116.0
10.8
SIGMA
Z (M)
7.5
14.1
19.9
25.3
30.2
34.8
39.1
43.2
47.0
50.6
54.1
57.4
60.6
7.5
DWAS
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
DWASH= MEANS NO CALC MADE (CONC =0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH^NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
*********************************
*** SCREEN DISCRETE DISTANCES ***
r *********************************
*** TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES
DIST
(M)
1265.
CONC
(UG/M**3)
71.34
STAB
5
UIOM
(M/S)
1.0
USTK
(M/S)
1.0
MIX HT
(M)
5000.0
PLUME
HT (M)
3.0
SIGMA
Y (M)
113.4
SIGMA
Z (M)
59.5
DvIASH
NO
DWASH= MEANS NO CALC MADE (CONC =0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
***************************************
*** SUMMARY OF SCREEN MODEL RESULTS ***
***************************************
CALCULATION MAX CONC DIST TO TERRAIN
PROCEDURE (UG/M**3) MAX (M) HT (M)
SIMPLE TERRAIN 5486. 100. 0.
***************************************************
** REMEMBER TO INCLUDE BACKGROUND CONCENTRATIONS **
***************************************************
r
SCREEN MODELING FOR ELEVATED TERRAIN
*** SCREEN-1.1 MODEL RUN ***
*** VERSION DATED 88300 ***
Complex Terrain Calculations, Fluorine Transfer Station
COMPLEX TERRAIN INPUTS:
SOURCE TYPE = POINT
EMISSION RATE (G/S) = 1.513
STACK HT (M) = 1.00
STACK DIAMETER (M) = 1.00
STACK VELOCITY (M/S)= 1.00
STACK GAS TEMP (K) = 293.00
AMBIENT AIR TEMP (K)= 293.00
RECEPTOR HEIGHT (M) = .00
lOPT (1=URB,2=RUR) = 1
06-1:
16:2
BUOY. FLUX = 00 M**4/S**3; MOM. FLUX = 25 M**4/S**2
FINAL STABLE PLUME HEIGHT (M) = 1.2
DISTANCE TO FINAL RISE (M) = 200.2
TERR MAX 24-HR
HT DIST CONC
(M) (M) (UG/M**3)
*VALLEY 24-HR CALCS*
PLUME HT
CONC ABOVE STK
(UG/M**3) BASE (M)
51. 1337. 3.678
9. 1341. 3.660
3.678
3.660
1.1
1.1
**SIMPLE TERRAIN 24-HR CALCS**
PLUME HT
CONC ABOVE STK UIOM USTK
(UG/M**3) HGT (M) SC (M/S)
0000
0000
0
0
0 .0 .0
0 .0 .0
06-15-93
16:27:02
*** SCREEN-1.1 MODEL RUN ***
*** VERSION DATED 88300 ***
Complex Terrain Calculations, Fluorine Transfer Station
SIMPLE TERRAIN INPUTS:
SOURCE TYPE = POINT
EMISSION RATE (G/S) = 1.513
STACK HEIGHT (M) = 1.00
STK INSIDE DIAM (M) = 1.00
STK EXIT VELOCITY (M/S)= 1.00
STK GAS EXIT TEMP (K) = 2 93.00
AMBIENT AIR TEMP (K) = 293.00
RECEPTOR HEIGHT (M) = .00
lOPT (1=URB,2=RUR) = 1
BUILDING HEIGHT (M) = .00
MIN HORIZ BLDG DIM (M) = .00
MAX HORIZ BLDG DIM (M) = .00
BUOY. FLUX = .00 M**4/S**3/ MOM. FLUX
*** STABILITY CLASS 4 ONLY ***
**********************************
*** SCREEN AUTOMATED DISTANCES ***
,25 M**4/S**2
**********************************
*** TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANC:
DIST
(M)
100.
200.
300.
400.
500.
600.
700.
800.
900.
1000.
1100.
1200.
1300.
1400.
.XIMUM
100.
CONC
(UG/M**3)
2166.
571.1
263.1
152.9
100.9
72.18
54.57
42.96
34.87
29.00
24.58
21.18
18.49
16.34
STAB
4
4
4
4
4
4
4
4
4
4
4
4
4
4
1-HR CONCENTRATION
2166. 4
UIOM
(M/S)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
AT OR
1.0
USTK
(M/S)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
BEYOND
1.0
MIX HT
(M)
320.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
100. M;
320.0
PLUME
HT (M)
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
SIGMA
Y (M)
15.7
30.8
45.4
59.4
73.0
86.2
99.0
111.4
123.5
135.2
146.7
157.8
168.7
179.3
15.7
SIGMA
Z (M)
13.8
27.2
40.2
52.9
65.3
77.3
89.1
100.6
111.8
122.8
133.5
144.1
154.4
164.5
13.8
L'••......
;;D
NO
riO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
DWASH= MEANS NO CALC MADE (CONC =0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
*********************************
*** SCREEN DISCRETE DISTANCES ***
*********************************
*** TERRAIN HEIGHT OF M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES -^*
DIST CONC UIOM USTK MIX HT PLUME SIGMA SIGMA
(M) (UG/M**3) STAB (M/S) (M/S) (M) HT (M) Y (M) Z (M) DWASIi
1337.
1341.
17.64
17.56
4 1.0 1.0 320.0 3.0 172.7 158.1 NO
4 1.0 1.0 320.0 3.0 173.1 158.5 NO
DWASH= MEANS NO CALC MADE (CONC = 0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
***************************************
*** SUMMARY OF SCREEN MODEL RESULTS ***
***************************************
CALCULATION
PROCEDURE
SIMPLE TERRAIN
COMPLEX TERRAIN
MAX CONC
(UG/M**3)
2166.
3.678
DIST TO
MAX (M)
100.
1337.
TERRAIN
HT (M)
0.
51. (24-HR CONC)
Michael O. LeaviU ?
Governor >^
Dianne R. Nielson, Ph.D. -S
Executive Director
Russell A. Roberts
Director
DEPARTMENT OF ENVIRONMENTAL QUALITY VSQ A fTf
DIVISION OF AIR QUALITY ^i\f\r |
150 North 1950 West
Salt Uke City, Utah 84114
[phone]
[phone] Fax
[phone] T.D.D.
Reply to: State of Uuh
Division of Air Quality
P.O. Box 144820
Salt Lake City, Utah 84114-4820
August 16, 1993 DAQE-0740-93
E. Richard Anderson
Manager, Environmental Planning and Operations
Hercules Inc.
P. O. Box 98
Bacchus Works
Magna, Utah 84044-0098
Re: Experimental Approval Order for Remediation of Fluorine Cylinders at Hercules Plant 1
Dear Mr. Anderson:
Your request for an Approval Order dated June 10, 1993, was received by the Utah Division of Air
Quality (DAQ). In your letter you requested approval for the on site disposal of 54 fluorine Cylinders
and 10 tetrafluorohydrazine cylinders. Hercules stated that the shipment of the fluorine cylinders for
offsite disposal would be difficult because the pressure rating on the cylinders had expired. The DAQ
has reviewed this letter and subsequent information dated June 30, 1993, July 30, 1993, and August 12,
1993. Approval to conduct fluorine and tetrafluorohydrazine venting and testing activities at the plant
1 site specified by Hercules Aerospace Company is hereby granted in accordance with Section 19-2-107
(2e) of the Utah Air Conservation Act under the following conditions:
1. The venting of the cylinders will only occur when the atmospheric^ clearing index
specified by the Utah DAQ is above 500.
2. The first cylinder vented will be at Pit 38 to determine the safety of ventilating the
remaining cylinders at the site specified by Hercules in the letter dated June 10, 1993.
3. Only 12 cylinders will be vented per day.
4. Not more than one fluorine cylinder will be vented per 30 minute time period and not
more than three cylinders containing tetrafluorohydrazine be vented per two hour time
period.
5. A Sensidyne gas fluorine gas detection instrument, or equivalent, shall be used to detect
the fluorine levels.
Printed on recycled paper
DAQE-0740-93
Page 2
6. Cylinders will not be vented until the detectable fluorine level is below the acceptable
threshold limit values/100, 0.01 ppm or 0.016 mg/m^, set by the American Conference
of Government Industrial Hygienists at a distance not greater than the Hercules plant 1
property line.
7. Not more than 96 pounds of fluorine and tetrafluorohydrazine be vented per day with a
total of 432 pounds of fluorine and 13 pounds of tetrafluorohydrazine be vented for the
complete operation.
8. The venting of the cylinders will be completed before November 30, 1993.
9. A report be submitted to DAQ no later than March 1, 1994, discussing the measured
fluorine concentrations and the implications to the Screen model.
Please direct any inquiries to Nando Meli at [phone].
Sincerely,
Russell A. Roberts, Executive Secretary
Utah Air Quality Board
NM:sbq
cc: Salt Lake County Health Department
08-13-1993 0a:42Pn FRC HERCULES BACCHUS MflGNfl.UT TO 95364099 P.06
DIST
(M)
952,
CONC
(UG/M**3)
.6148
UIOM USTK MIX HT PLUME
STAB (M/S) (M/S) (M) HT (M)
1.0 1.0 320.0
DWASH= MEANS NO CALC MADE (CONC =0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH«NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
***************************************
*** SUMMARY OF SCREEN MODEL RESULTS ***
***************************************
3.0
SIGMA
Y (M)
259.3
SIGMA
Z (M) DWASH
319.2 NO
CALCULATION
PROCEDURE
SIMPLE TERRAIN
MAX CONC
(UG/M**3)
50.37
DIST TO
MAX (M)
100.
TERRAIN
HT (M)
***************************************************
** REMEMBER TO INCLUDE BACKGROUND CONCENTRATIONS **
***************************************************
03-13-1993 0Q:42fiN FRO^HERCULES BACCHUS nflGNfl.UT TO
*** SCREEN-1.1 MODEL RUN ***
*** VERSION DATED 88300 ***
Pit 38, B Stability Class, 3,125 feet to fenceline
95364099 P.07
08-12-9:;
17:18:30
SIMPLE TERRAIN INPUTS:
SOURCE TYPE
EMISSION RATE (G/S)
STACK HEIGHT (M)
STK INSIDE DIAM (M)
STK EXIT VELOCITY (M/S)=
STK GAS EXIT TEMP (K) =
AMBIENT AIR TEMP (K)
RECEPTOR HEIGHT (M)
lOPT (1=URB,2=RUR)
BUILDING HEIGHT (M)
MIN HORIZ BLDG DIM (M) =
MAX HORIZ BLDG DIM (M) =
POINT
.1260
1
1
1,
293,
293.00
.00
,00
00
00
00
00
,00
00
BUOY. FLUX = .00 M**4/S**3; MOM, FLUX
*** STABILITY CLASS 2 ONLY ***
**********************************
*** SCREEN AUTOMATED DISTANCES ***
**********************************
.25 M**4/S**2
*** TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES ***
DIST
(M)
CONC
(UG/M**3) STAB
UIOM
(M/S)
USTK
(M/S)
MIX HT
(M)
PLUME
HT (M)
SIGMA
Y (M)
SIGMA
Z (M) DWASH
100
200
300
400,
500
600
700,
800.
900,
1000,
50.37
12.36
5.382
2.970
1.868
1.282
.9506
.7626
.6538
.5853
2
2
2
2
2
2
2
2
2
2
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
,0
,0
0
0
0
0
0
0
0
0
320.0
320.0
320
320
320
320
320,
320,
320.
320,
.0
.0
,0
,0
,0
,0
,0
,0
MAXIMUM 1-HR CONCENTRATION AT OR BEYOND
100. 50.37 2 1.0 1,0
100. M:
320.0
DWASH= MEANS NO CALC MADE (CONC =0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
*********************************
*** SCREEN DISCRETE DISTANCES ***
*********************************
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
31.4
61.6
90.7
118.8
146
172,
198,
222.
247,
270,
,1
,4
.0
8
0
5
31.4
25.2
52.6
82.1
113.6
147.0
182.1
219.0
257.6
297.7
339.4
25.2
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
* * * TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES * **
0S-13-1993 0S:42PIM FRI 'O^HI lERCULES BPCCHUS MfiGNfl.UT TO 95364099 P.08
DIST
(M)
952,
CONC
(UG/M**3)
.6148
UIOM USTK MIX HT PLUME SIGMA
STAB (M/S) (M/S) (M) HT (M) Y (M)
1.0 1.0 320.0 3.0 259.3
SIGMA
Z (M) DWASH
319.2 NO
DWASH= MEANS NO CALC MADE (CONC = 0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
***************************************
*** SUMMARY OF SCREEN MODEL RESULTS ***
***************************************
C:ALCULATION
PROCEDURE
SIMPLE TERRAIN
MAX CONC
(UG/M**3)
50.37
DIST TO
MAX (M)
100.
TERRAIN
HT (M)
***************************************************
** REMEMBER TO INCLUDE BACKGROUND CONCENTRATIONS **
***************************************************
08-13-1993 08:43firi FRIJ HERCULES BACCHUS MAGNA.UT TO 95364099 P. 09
08-12-y;j
17:27:20
*** SCREEN-1.1 MODEL RUN ***
*** VERSION DATED 88300 ***
Pit 38, C Stability Class, 3,125 feet to fenceline
SIMPLE TERRAIN INPUTS:
SOURCE TYPE
EMISSION RATE (G/S)
STACK HEIGHT (M)
STK INSIDE DIAM (M)
STK EXIT VELOCITY (M/S)=
STK GAS EXIT TEMP (K) =
AMBIENT AIR TEMP (K)
RECEPTOR HEIGHT (M)
lOPT (1=URB,2=RUR)
BUILDING HEIGHT (M)
MIN HORIZ BLDG DIM (M) =
MAX HORIZ BLDG DIM (M) =
POINT
.1260
1.00
1.00
1.00
293.00
293.00
.00
1
.00
.00
.00
BUOY. FLUX = .00 M**4/S**3; MOM. FLUX
*** STABILITY CLASS 3 ONLY ***
**********************************
*** SCREEN AUTOMATED DISTANCES ***
**********************************
,25 M**4/S**2
TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES ***
DIST
(M)
CONC
(UG/M**3) STAB
UIOM
(M/S)
USTK
(M/S)
MIX HT
(M)
PLUME
HT (M)
SIGMA
Y (M)
SIGMA
Z (M) DWASH
100
200
300
400
500
600
700
800
900
1000,
91.76
23.61
10.70
6.131
992
819
104
637
317
091
3
3
3
3
3
3
3
3
3
3
.1
1
1
1
1
1
1
1
1
1
0.
0
0
0
0
0
0
0
0
0
MAXIMUM 1-HR CONCENTRATION AT OR BEYOND
100. 91.76 3 1.0 1.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
320.0
100. M;
320.0
3.0
3.0
3.0
3
3,
3,
3
3
3
3.0
3.0
21
42
62
81
100
118
136
153
169.8
185.9
20
40,
60,
80,
100
120,
140,
160,
180.0
200.0
0
,0
0
0
0
0
0
0
21.6 20.0
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
DWASH= MEANS NO CALC MADE (CONC = 0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
*********************************
*** SCREEN DISCRETE DISTANCES ***
*********************************
*** TERRAIN HEIGHT OF 0, M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES ***
08-13-1993 08:43Ari FRQ HERCULES BACCHUS MAGNA.UT TO 95364099 P.10
DIST CONC UIOM USTK MIX HT PLUME SIGMA SIGMA
(M) (UG/M**3) STAB (M/S) (M/S) (M) HT (M) Y (M) Z (M) DWASH
190.4 NO 952 1.190 1.0 1.0 320.0 3.0 178.2
DWASH= MEANS NO CALC MADE (CONC =0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH>=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
***************************************
*** SUMMARY OF SCREEN MODEL RESULTS ***
***************************************
CALCULATION
PROCEDURE
SIMPLE TERRAIN
MAX CONC
(UG/M**3)
91.76
DIST TO
MAX (M)
100.
TERRAIN
HT (M)
0.
***************************************************
** REMEMBER TO INCLUDE BACKGROUND CONCENTRATIONS **
***************************************************
08-13-1993 08:43AM FRC IHERCULES BACCHUS MAGNA.UT TO 95364099 P.11
*** SCREEN-1,1 MODEL RUN ***
*** VERSION DATED 88300 ***
Pit 38, D Stability Class, 3,125 feet to fenceline
SIMPLE TERRAIN INPUTS:
SOURCE TYPE = POINT
EMISSION RATE (G/S) = .1260
STACK HEIGHT (M) = 1.00
STK INSIDE DIAM (M) = 1.00
STK EXIT VELOCITY (M/S)= 1.00
STK GAS EXIT TEMP (K) = 293.00
AMBIENT AIR TEMP (K) = 293.00
RECEPTOR HEIGHT (M) = .00
lOPT (1=URB,2=RUR) = 1
BUILDING HEIGHT (M) = .00
MIN HORIZ BLDG DIM (M) = .00
MAX HORIZ BLDG DIM (M) = .00
08-12-93
17:27:49
BUOY. FLUX = .00 M**4/S**3; MOM. FLUX
*** STABILITY CLASS 4 ONLY ***
25 M**4/S**2
**********************************
*** SCREEN AUTOMATED DISTANCES ***
**********************************
*** TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES ***
DIST
(M)
CONC
(UG/M**3) STAB
UIOM USTK MIX HT PLUME SIGMA SIGMA
(M/S) (M/S) (M) HT (M) Y (M) Z (M) DWASH
100.
200.
300.
400.
500.
600.
700.
800.
900.
1000.
180.4
47.56
21.91
12.73
8.403
6.011
545
577
904
415
4
4
4
4
4
4
4
4
4
4
,0
,0
.0
,0
,0
,0
,0
rO
,0
,0
,0
,0
,0
,0
,0
0
,0
0
0
0
MAXIMUM 1-HR CONCENTRATION AT OR BEYOND
100. 180.4 4 1.0 1.0
320
320
320
320
320
320
320
320
320
320,
100. M;
320.0
3,
3,
3,
3,
3,
3,
3,
3,
3,
3.
15.7
30.8
45,
59
73
86,
99,
111,
123.5
135.2
.4
.4
,0
,2
,0
,4-
13.8
27.2
40
52
65
77
89
100
111.8
122.8
3.0 15.7 13-8
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
DWASH= MEANS NO CALC MADE (CONC =0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
*********************************
*** SCREEN DISCRETE DISTANCES ***
*********************************
*** TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES ***
08-13-1993 08:44AM HERCULES BACCHUS MAGNA,UT TO 95364099 P.12
DIST
(M)
952.
CONC
(UG/M**3)
2.631
STAB
4
UIOM
(M/S)
1.0
USTK MIX HT
(M/S) (M)
1.0 320.0
DWASH= MEANS NO CALC MAP'^ (CONC =0.0)
DWASH=NO MEANS NO BUILDIN>. JOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
***************************************
*** SUMMARY OF SCREEN MODEL RESULTS ***
***************************************
PLUME
HT (M)
3.0
SIGMA SIGMA
Y (M) Z (M)
129.6
DWASH
117.6 NO
CALCULATION
PROCEDURE
SIMPLE TERRAIN
MAX CONC
(UG/M**3)
180.4
DIST TO
MAX (M)
100.
TERRAIN
HT (M)
***************************************************
** REMEMBER TO INCLUDE BACKGROUND CONCENTRATIONS **
***************************************************
08-13-1993 08:44AM FRi HERCULES BACCHUS MAGNA.UT TO 95364099 P.13
*** SCREEN-1.1 MODEL RUN ***
*** VERSION DATED 88300 ***
Pit 38, E Stability Class, 3,125 feet to fenceline
SIMPLE TERRAIN INPUTS:
SOURCE TYPE = POINT
EMISSION RATE (G/S) = .1260
STACK HEIGHT (M) = 1.00
STK INSIDE DIAM (M) = 1.00
STK EXIT VELOCITY {M/S)= 1.00
STK GAS EXIT TEMP (K) = 293.00
AMBIENT AIR TEMP (K) = 293.00
RECEPTOR HEIGHT (M) = .00
lOPT (1=URB,2=RUR) = 1
BUILDING HEIGHT (M) = .00
MIN HORIZ BLDG DIM (M) = .00
MAX HORIZ BLDG DIM (M) = .00
08-12-9.?
17:59:56
BUOY. FLUX = .00 M**4/S**3; MOM. FLUX
*** STABILITY CLASS 5 ONLY ***
**********************************
*** SCREEN AUTOMATED DISTANCES ***
**********************************
.25 M**4/S**2
*** TERRAIN HEIGHT OF
DIST CONC
(M) (UG/M**3) STAB
0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES ***
UIOM USTK MIX HT PLUME SIGMA SIGMA
(M/S) (M/S) (M) HT (M) Y (M) Z (M) DWASH
100.
200.
300.
400.
500.
600.
700.
800.
900.
1000.
456.9
131.7
63.75
38.51
26.28
19.35
15.02
12.10
10.04
8.510
5
5
5
5
5
5
5
5
5
5
1
1
1.
1
1,
1,
1,
1,
1,
1,
1.0
1.0
1.0
1.0
0
0
0
0
0
0
5000.0
5000.0
5000.0
5000.0
5000.0
5000
5000
5000
5000
5000
,0
,0
,0
0
0
MAXIMUM 1-HR CONCENTRATION AT OR BEYOND
100. 456.9 5 1.0 1.0
100. M:
5000.0
DWASH= MEANS NO CALC MADE (CONC =0.0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
*********************************
*** SCREEN DISCRETE DISTANCES ***
*********************************
,0
0
0
0
0
,0
3.0
3.0
-3.0
3.0
3.0
10.8
21.2
31,
40,
50,
59,
68
76
84.
93.
10,8
7.5
14.1
19.9
25.3
30.2
34.8
39.1
43.2
47.0
50.6
7.5
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
*** TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES ***
3-13-1993 08:45AM FRC IHERCULES BACCHUS MAGNA.UT TO 95364099 P.14
DIST
(M)
CONC
(UG/M**3)
UIOM USTK MIX HT PLUME
STAB (M/S) (M/S) (M) HT (M)
952. 9.189 1.0 1.0 5000.0 3.0
SIGMA
Y (M)
89.1
SIGMA
Z (M) DWASH
48.9 NO
DWASH= MEANS NO CALC MADE (CONC =0,0)
DWASH=NO MEANS NO BUILDING DOWNWASH USED
DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED
DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED
DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X<3*LB
***************************************
*** SUMMARY OF SCREEN MODEL RESULTS ***
***************************************
CALCULATION
PROCEDURE
SIMPLE TERRAIN
MAX CONC
(UG/M**3)
456.9
DIST TO
MAX (M)
100.
TERRAIN
HT (M)
0.
***************************************************
** REMEMBER TO INCLUDE BACKGROUND CONCENTRATIONS **
***************************************************
7 6 5 4
{ - BACCHUS WORKS MAP
H
G
D
C
B
7 6 5