DSHW-1996-004109 - 0901a0688016c722

DL^tNSE AND LAUNCH VEh
P.O. BOX 689
BRIGHAM CITY. UT 84302-0689
80:-863-35ll
18 June 1996
W300-FY96-ST084
I DIVISION THtOKOL
SPACE-DEFENSE-FAS;ENING SYSTEMS
RECEIVFO .... i.^
Kiran Bhayani, P.E., DEE, Manager
Design and Evaluation Section
Division of Water Quality
P. 0. Box 144870
Salt Lake City, Utah 84114-4870
JUN 2 4 1996
Dear Mr. Bhayani
Subject:
References
Septic Tank Closure Variance Request
Utah Administrative Code, R317-502-13,
Procedure for Disposal System Abandonment
Meeting between Kiran Bhayani and Lyle Stott,
Division of Water Quality and Doug Ball and
Steve Harris, Thiokol Corporation on 11 April
1996
Telephone Conversation between Kiran Bhayani,
Division of Water Quality and Steve Harris,
Thiokol Corporation on 19 March 1996
The referenced meeting and telephone conversation discussed
the closure of several domestic septic tanks at Thiokol's
production plant in northern Utah. At issue is the cost and
efficacy of abandoning 34 septic tanks (36 sites were
mentioned earlier) as specified in the referenced regulation.
We understand from our conversation that the abandonment
procedures outlined in the regulations are based upon safety.
We also understand that an alternative method of abandonment
can be used if safety is insured.
Thiokol is requesting that a variance be granted to allow
filling of the tanks with solid material, letting displaced
tank liquids flow into the drain field, and covering tank
entrances to complete the abandoning process, as agreed in our
meeting of 11 April. Thiokol's proposal would negate the
requirement to empty the tanks before filling them with solid
material.
Several advantages can be realized through the proposed method
of abandonment. These include significant cost savings,
reducing the period of completion, and avoiding wastewater
treatment plant stress and sludge transport. Sludge would
remain in the tanks to dry, but there are no anticipated
Kiran Bhayani, P.E., DEE, Manager
18 June 1996
Page 2
safety or environmental issues based on our evaluation of the
material to be left in place.
As requested, we have enclosed a list of the buildings where
the septic tanks are being abandoned, along with site maps
showing tank locations. Additionally, we have enclosed a
listing of average sludge quality from sampling three
representative domestic septic tanks at Thiokol (Buildings
M-48, M-171, M-590) and ranges of constituent concentrations
from domestic septic tanks in the United States. We have also
tabularized analytical results from all of the septic tanks
which have been sampled and which are being abandoned as
requested.
Semi-volatile and volatile organic compounds with concentra-
tions below detection limits are not listed on the summary
sheets. Only those organics positively identified are
delineated. It should be noted that volatile and semi-
volatile organic compound information is not available for
domestic septic sludges on a national basis.
Our investigation has shown that identified organics were not
disposed as an industrial or hazardous waste, but are present
from incidental washing a-nd/or normal domestic use. The
concentration of 1,4-Dichlorobenzene at Building M-31/M-301 is
a total concentration and does not fail TCLP for characteris-
tic hazardous wastes. The chemical is contained in Bowl Blox
which is a National Sanitary Company sanitizer/deodorizer.
We are anxious to complete the abandoning process on these
septic tanks and trust the enclosed information will assist in
your decision. We would be happy to answer any questions you
may have and look forward to your reply. Please call me at
863-5928 or Steve Harris at 863-5456 if you need further
information.
Sincerely
D. Thompson, Director
Safety, Environmental and Support
CC: Joel Hoyt, Bear River District Health Department
Gerald L. Jackson, Division of Water Quality
Otis Willoughby, Division of Solid and Hazardous
Waste
Enclosures:
JDT/SEH/jp
THIOKOL CORPORATION
SEPTIC TANK ABANDONMENT
VARIANCE REQUEST
Wastewater Septic Tank Flow
Building Discharge Size (Gal.) Diverted
Defense Launch Vehicle Area (Formerly Air Force Plant 78)
M-627 Domestic 1,200 4-26-95
Manufacturing Area
A-l
A-3
A-4
ASP-124B
I-IOH
M-12
M-13
M-16
M-31/301
M-32
M-39
M-40/40B
M-43
M-46A
M-48
M-51/300
M-55A
M-87
M-114
M-171
M-172
M-174
M-303
M-304
M-308
M-314
M-323
M-325
M-397
M-398
Test Area
T-IA
T-23
T-112
Domestic *
Domestic
Domestic
Domestic
Domestic
Domestic *
Domestic
Domestic *
Domestic *
Domestic
Domestic
Domestic
Domestic
Domestic *
Domestic *
Domestic
Domestic
Domestic
Domestic *
Domestic *
Domestic
Domestic
Domestic
Domestic
Domestic
Domestic
Domestic
Domestic
Domestic
Domestic
Domestic
Domestic
Domestic
22,000 3-16-95
20,000 3-16-95
6,400 3-16-95
1,000 4-12-95
950 3-30-95
1,200 4-11-95
1,000 3-30-95
1,200 4-12-95
700 4-07-95
1,000 4-03-95
500 4-06-95
1, 000 4-04-95
1,000 3-29-95
1,100 3-31-95
1,000 4-13-95
700 3-31-95
500 3-29-95
1,000 4-03-95
1,000 3-27-95
1,500 3-30-95
1,000 3-29-95
1,000 3-31-95
750 3-21-95
750 3-27-95
1,000 4-03-95
2,000 4-05-95
1,750 3-28-95
500 4-07-95
2,000 3-20-95
5,000 5-09-95
2,400 5-10-95
10,000 5-17-95
1,200 5-18-95
Septic tank contents sampled and analyzed.
Average Results for Domestic Septic Tanks * |
||i|||:|:;|;|||iii|
1 Tank Size (Gallons)
Ph
1 BOD (mg/l)
TS"(nng/l)
1 Oil and Grease (mg/l)
1 Antimony (mg/l)
I Arsenic (mg/l)
1 Barium (mg/l)
1 Cadmium (mg/l)
Chromium (mg/l)
Copper (mg/l)
Lead (mg/l)
1 Mercury (ppm)
1 Nickel (mg/l)
Selenium (mg/l)
Silver (mg/l)
Zinc (mg/l
Volatile Organics:
1 Chloroethane (ug/l)
1 1,1-Dichloroethane (ug/l)
1,4-Dichlorobenzene (ug/l)
Toluene (ug/l)
liiiiiiiiiiiiii
1,667
—
<1,219
5,211
23.3
<.050
0.058
1.465
0.059
0.043
1.545
0.127
0.015
0.096
< 0.039
<.009
9.86
^;iiiiiiiiMi;
1,000- 2,500 1
6.7 - 7.4
<190- 2,568
2,188- 10,112
n.4-31.0
<.050
0.025-0.120
0.974- 1.760
0.004-0.152
0.009 - 0.083
0.535 - 2.830
0.035 - 0.289
0.006-0.03
0.021 -0.209
0.024- <0.060
<.003-0.020
3.51 - 17.90
lllilpBllii^:^:: 1
6- 7
2,000 - 30,000
4,000- 100,000
3,850- 10,000 1
0.03 - 0.5 1
1 0.03- 10.8
0.6-2.2
0.3-34
1 2-8.4
1 0.0002 - 4
1 0.2-37
0.02 - 0.3
1 2.9- 153
<100
<100
<70
<90
<100
<100
<100- 210
< 100-270
' Average values from Buildings M-48, M-171, M-590
" From: Metcalf & Eddy, Inc., Wastewater Engineering Treatment, Disposal, and Reuse, 3rd Ed., McGraw-Hill, Inc.
New York, NY, 1991. pp. 1334.
USEPA, Handbook of Septage Treatment and Disposal. Cincinnati, Ohio, 1984. EPA-625/6-84-009.
USEPA, Design Manual for Onsite Wastewater Treatment and Disposal Svstems, Cincinnati, Ohio, 1980.
EPA-625/1-80-012.
SEPTIC TANK SAMPLING RESULTS
Building
Tank Size (Gallons)
Ph
BOD (mg/l)
TS (mg/l)
Oil and Grease (mg/l)
Antimony (mg/l)
Arsenic (mg/l)
Barium (mg/l)
Cadmium (mg/l)
Chromium (mg/l)
Copper (mg/l)
Lead (mg/l)
Mercury (mg/kg)
Nickel (mg/l)
Selenium (mg/l)
Silver (mg/l)
Zinc (mg/l
Volatile Organics:
Chloroethane (ug/l)
1,1-Dichloroethane (ug/l)
1,4-Dichlorobenzene (ug/l)
Toluene (ug/l)
• .• • . A-l'
22,000
6.4
525
1,554
9.1
<.050
0.033
3.260
<.002
0.102
1.540
0.073
0.01
0.049
0.029
0.156
6.99
.M-12
1,200
6.8
842
4,966
41.4
<.050
0.051
0.852
<.002
0.143
0.490
0.212
0.004
0.136
0.021
<.003
8.64
.:. "M^16'
1,200
7.2
1,495
10,406
21.4
<.050
0,140
2.830
0.123
0.253
4.830
0.768
0.02
0.192
0.052
<.003
20.80
.. . .••
...M-31/^01.
700
6.6
10,703
48,724
5.6
<.050
0.050
1.620
0.021
0.061
3.510
0.150
0.02
0.138
0.075
0.014
10.60
.. M-46A
1,100
7.3
568
3,380
26.5
<.050
0.051
0.777
0.016
0.064
1.560
0.188
0.007
0.070
0.033
<.003
5.23
.'. M-m
1,000
7.0
2,568
10,112
31.0
<.050
0.120
1.660
0.152
0.083
2.830
0.289
0.03
0.209
<.060
0.020
17.90
.M-U4.
1,000
7.2
410
2,702
11.3
<.050
0.029
0.379
<.002
0.034
0.421
0.087
<.0013
0.038
0.013
0.006
1.53
llltliilllllii
1,500
6.7
899
2,188
27.5
<.05^ 1 0.025
1.760
0.021
0.038
1.270
0.056
0.01
0.057
0.032
<.00|||
8.16
-
-
-
-
410
650
-
-
-
-
-
-
-
-
* 7,600
-
-
-
* 126
161
-
-
~
~
-
-
-
-
-
-
* 210
270
* 1,4-Dichlorobenzene is a chemical in Bowl Blox, a toilet sanitizer/deodorizer from National Sanitary Company.