technol - fruits & associates
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Septembe
Client Subject: 24.0 hour Project Fruits Proj
Dear Mr. S
Fruits & AsAugust 24t
actual even
Technol
High-Vacuwell or recTo eliminathe static tube. As tthis drop vacuum isassociateinlet of thextractioncreates a
Occasionaliquid remmounted subtractedinstalled; fresh air iapplied vaconfigurat
During thewhere thefor future incineratedestructioflow diagr
er 8, 2017
High-Vacuum
ject: AL17-782
Smith:
ssociates, Inc. isth, 2017 at the ant.
ogy:
uum Remediacovery well. Tate moundingwater level de
the water tabltube. This sls applied to td with the site
he stinger asn well. This dr
cone of influe
ally, fresh air moval rate. In
on the well d from the tone on the sts introduced acuum becautions are show
e extraction pe liquids are sdisposal. The
ed in a forced on of the contaram of this pro
m Remediation
22
s pleased to prabove referenc
ation (HVR) This is accomg of the water epth. The appe attempts tourping effectithe well durine, seasonal w
ssembly is slraw down (onence, which m
(5 to 25 CFMorder to acchead to meaotal flow caltinger assemat the well he
use the inlet fwn in Figure #
process, the cseparated withe hydrocarbonair Thermal Oaminants in thocess is show
Event #3
rovide this sumced facility. Belo
involves the mplished by ap
table, a dropplied vacuumo mound due tively maintainng the event. water level daowly loweredne to ten feetmaximizes the
M) is introducecurately recorasure the amculated for ebly (well headead, the influfor fresh air i#1.
combined air ah a liquid scrun vapors are tOxidation (Thhe air streamwn in Figure #
mmary of the Higow is a summa
extraction of pplying high lep tube (commo and airflow eto the applicans the static In order to m
ata is analyzed to the maxt below the se efficiency of
ed at the wellrd the actual
mount of freseach extractiod vacuum), a
uence vacuums adjacent to
and liquids arubber / knockotransferred toOx) unit at 15, the clean air
#2.
gh-Vacuum Reary of both the
subsurface vevels of vacuonly known aextracted fromation of vacuuconditions ofminimize any ed. Once the ximum historitatic water lef the high vac
l surface to inremoval rateh air that is on well. Add
and one on thm reading willo this vacuum
re transferredout system an
o the off-gas t500 degrees r is discharge
emediation evee technology as
vapors and lium pressure
as a stinger) ism the well is pum, the liquidsf the water ta
change to thextraction proical water lev
evel) depressecuum process
ncrease the ae from the we
introduced. ditionally, twoe well casingl be artificially
m gauge port.
to the mobilend dischargedtreatment sysFahrenheit. A
ed into the atm
ent that was cons well as the re
quids via a mto the extrac
s inserted in tpulled throughs are “slurped
able while thehe current smocess is undevel observedes the water s.
irflow and enell, an airflowThis extra fr
o vacuum gag (influence vay lower than t. The setup a
e treatment syd into a stora
stem and are After thoroughmosphere. A c
nducted on esults of the
monitoring ction point. the well to h this drop d” through e elevated mear zone erway, the for each table and
hance the w gauge is
esh air is auges are acuum). If the actual
and piping
ystem age tank
h complete
Page 2 September 8, 2017
Calculations: During the HVR event, two measurements are taken, of both the influent and effluent flow rates, the concentrations of the vapors removed (before off-gas treatment), and the off-gas treatment system concentrations. These measurements are used to calculate the removal rates and the off-gas emission rates. The flow rates were measured using a Dwyer DS-300 Pitot tube attached to a differential pressure gauge. These flow rate measurements are reported in Actual Cubic Feet per Minute (ACFM). Before each event, these flow assemblies are calibrated to insure an accurate flow measurement. A separate flow rate is calculated for each influent well (if more than one well is connected), as well as for any additional fresh air that is introduced into the influent stream. The individual flow rates are combined to achieve the total flow and velocity derived from the extraction points. Because of the extremely high concentrations involved with a High Vacuum event, additional quench air (0 to 2,000 SCFM) is added to the vapor stream, just before entering the ThOx unit. An additional Pitot tube assembly is installed at the inlet of the ThOx unit and is used to measure the total flow. Combined with the off-gas concentration readings, this total flow rate is used to calculate the destruction efficiency of the system.
The concentration measurements are taken using a TVA-1000A FID instrument calibrated to methane. For comparison purposes, the removal rates are calculated in total carbon, as well as total hydrocarbons. This FID instrument has a dynamic range of 0-50,000 PPM as methane, 0-100,000 PPM as hydrocarbon. Our concentration samples are collected before any additional bleed or quench air is added to the extracted flow rate. These undiluted concentration measurements exceed the dynamic range of any FID instrument. In order to accurately record the high concentrations observed during a HVR event, a calibrated 10:1 dilution valve is used to cut the sample. This dilution valve, along with the FID instrument, is calibrated before the start of each event.
In order to eliminate the naturally occurring methane that is present during a typical HVR event, each concentration sample is measured twice. The first sample is collected directly from the system, and recorded as the total VOC concentration. The second sample is collected using an in-line activated carbon filter, which adsorbs the hydrocarbon compounds leaving only methane present in the sample to be measured. This methane only result is then subtracted from the total VOC concentration measurement (first sample), resulting in a Non Methane Organic Compound (NMOC) concentration. This NMOC concentration is used in the mass removal calculations. However, as with any FID instrument, the NMOC results are recorded as parts per million by volume (PPMv) as if the concentrations were methane. A conversion from methane to a hydrocarbon and from a volume to a weight is necessary to calculate an accurate mass removal rate. Using the NMOC concentration results and the TVA-1000’s factory certified response ratio for hydrocarbons, the NMOC results are converted to equivalent hydrocarbon mg/Ls. A TVA-1000 FID has an average response ratio of 600 PPMv per mg/L of unleaded gasoline and 200 PPMv per mg/L of diesel. Summaries of these calculations are shown in Figure #3.
Results: Phase Separated Hydrocarbon (PSH) was not detected in any monitoring wells prior to performing the event (well locations are shown in Figure #4). Once static water levels were established, during the course of the event the system was connected to MW-3. At the extraction point a stinger was located at the static fluid level, and once the ThOx unit’s normal operating temperature was reached, the inlet flow valve was opened for this well. Once the PSH was removed from the extraction well (if any), the stinger assembly was lowered into the static fluid level approximately 2 feet, creating a cone of influence.
During the 24.0 hour HVR event, the average ACFM was calculated at 50.35 for MW-3, with an additional 5.00 ACFM recorded at the fresh air breather port. The fresh air breather port is used during an event to enhance the volatilization and fluid recovery rates from the monitoring wells. A summary of the recovered flow rates are shown in Figure # 5. The combined total airflow from the extraction wells and breather ports averaged 55.35 ACFM.
Pag
Throughoeffluent saA) and dequivalenevent. A sdischargea 99.92%recorded
Once the results arassociateremoved located inmanifeste
Sincerely,
Fruits & A
John M. F
ge 3
out the event, ample ports. uring the evt gallons of gsummary of t
e (to the atmo% destruction
in this event (
HVR event wre shown in Ad monitoringand collected
n Mobile, Alabed waste trans
,
Associates, In
ruits
air concentraThe concent
vent, 59.65 pasoline). Addthe total equivsphere) was rate for the
(See Attachm
was completeAttachment A wells. Durind in a holdinbama. Fruits sportation and
c.
ation measureration results
pounds of caditionally, 2.73valent hydroc0.04399 pounThOx unit. I
ment A for resu
e, a second roA. After the eng the eventng tank on th
and Associad disposal tic
ements were s were entererbon was re
3 pounds of mcarbon recovends of carbonnduced vacuults).
ound of waterevent, there t, 3050 gallohe system antes, Inc. provkets are inclu
recorded peed into the HVemoved (199.methane was ery rate is shn (0.14681 pouum readings
r level measuwere no leve
ons of petrolnd later dispovided transpouded in Attach
Se
eriodically fromVR field mon.10 pounds oremoved and
hown in Figurounds of hydrs (in inches o
urements wasels of PSH reum contactosed of at O
ortation of thehment B.
eptember 8,
m both the infitoring log (Aof hydrocarbd incinerated dre #6. The totrocarbon), thuof water colu
s recorded in recorded in ated water (P
Oil Recovery e PCW. Cop
2017
fluent and Attachment
on, 32.32 during the tal off-gas us yielding mn) were
which the any of the CW) was Company
pies of the
Figures
Attachment A
HVR
FIE
LD M
ON
ITO
RIN
G L
OG
Dat
e:Fa
cilit
y N
ame:
Faci
lity
ID#:
Pers
onne
l:
Even
t #:
Faci
lity
Addr
ess:
Con
sulta
nt:
Tim
eIn
terv
alR
otar
yAd
dl.
Tota
lTo
tal
Tota
lIn
fluen
tTo
tal
Filte
red
Tota
lTo
tal
Tem
p.To
tal
ThO
x U
nit
Liqu
idC
arbo
nEq
uiv.
D
estru
ctio
nTi
me
Lobe
Stin
ger
Wel
lFl
owSt
inge
rW
ell
Flow
Stin
ger
Wel
lFl
owSt
inge
rW
ell
Flow
Stin
ger
Wel
lFl
owBl
eed
Velo
city
Flow
Flow
Flow
Influ
ent
(CH
4)M
etha
neC
arbo
n of
Sta
ckEf
fluen
tTo
tal
Leve
lEm
issi
onH
ydro
carb
onEf
ficie
ncy
Vacu
umD
epth
Vacu
umR
ate
Dep
thVa
cuum
Rat
eD
epth
Vacu
umR
ate
Dep
thVa
cuum
Rat
eD
epth
Vacu
umR
ate
Air
asas
Tem
p.FI
D R
esul
tsFI
D R
esul
tsR
emov
edR
emov
edG
asFI
D R
esul
tsFl
ow R
ate
in T
ank
Rat
eR
ate
Rat
ing
(in M
inut
es)
(in/H
g)(ft
)(in
/Hg)
(AC
FM)
(ft)
(in/H
g)(A
CFM
)(ft
)(in
/Hg)
(AC
FM)
(ft)
(in/H
g)(A
CFM
)(ft
)(in
/Hg)
(AC
FM)
(AC
FM)
Ft/s
ec.
(AC
FM)
(DSC
FM)
(F0 )
(PPM
v)(P
PMv)
(PPM
v)(m
g/m
3)(lb
s.)
(lbs.
)Lb
sG
al(F
0 )(P
PMv)
(SC
FM)
(Gal
lons
)(lb
s.)
(lbs.
)%
07:3
0 AM
0 m
in.
47.0
011
.0''
36.8
5.0
31.9
41.8
40.5
77.0
79,6
000
79,6
0013
2,66
70.
000
0.00
0.00
0.00
013
86.0
2.00
572.
130.
0000
0.00
0099
.96%
08:0
0 AM
30 m
in.
48.0
014
.0''
51.1
5.0
42.9
56.1
54.3
77.0
76,0
003,
000
73,0
0012
1,66
70.
200
3.71
12.3
72.
008
1374
.02.
0057
2.13
0.00
110.
0036
99.9
7%
08:3
0 AM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
54.2
78.0
71,0
002,
750
68,2
5011
3,75
00.
183
3.46
11.5
41.
874
1371
.02.
0057
2.13
0.00
110.
0036
99.9
7%
09:0
0 AM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
54.1
79.0
67,0
002,
500
64,5
0010
7,50
00.
166
3.26
10.8
91.
767
1354
.02.
0057
2.13
0.00
110.
0036
99.9
7%
09:3
0 AM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
54.1
79.0
63,0
002,
300
60,7
0010
1,16
70.
153
3.07
10.2
51.
663
1348
.02.
0057
2.13
0.00
110.
0036
99.9
7%
10:0
0 AM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
54.0
80.0
59,0
002,
000
57,0
0095
,000
0.13
22.
889.
601.
559
1341
.02.
0057
2.13
0.00
110.
0036
99.9
6%
10:3
0 AM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
54.0
80.0
52,0
001,
850
50,1
5083
,583
0.12
32.
538.
451.
372
1334
.02.
0057
2.13
0.00
110.
0036
99.9
6%
11:0
0 AM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
53.9
81.0
49,2
001,
600
47,6
0079
,333
0.10
62.
408.
001.
299
1325
.02.
0057
2.13
0.00
110.
0036
99.9
6%
11:3
0 AM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
53.9
81.0
43,7
001,
500
42,2
0070
,333
0.09
92.
137.
101.
152
1317
.02.
0057
2.13
0.00
110.
0036
99.9
5%
12:0
0 PM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
53.7
83.0
41,0
001,
330
39,6
7066
,117
0.08
81.
996.
651.
079
1312
.02.
0057
2.13
0.00
110.
0036
99.9
5%
12:3
0 PM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
53.7
83.0
37,9
001,
290
36,6
1061
,017
0.08
51.
846.
130.
996
1309
.02.
0057
2.13
0.00
110.
0036
99.9
4%
01:0
0 PM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
53.6
84.0
35,0
001,
100
33,9
0056
,500
0.07
21.
705.
670.
920
1300
.02.
0057
2.13
0.00
110.
0036
99.9
4%
01:3
0 PM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
53.6
84.0
31,3
001,
030
30,2
7050
,450
0.06
81.
525.
060.
822
1291
.02.
0046
6.01
0.00
090.
0029
99.9
4%
02:0
0 PM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
53.6
84.0
28,9
0091
027
,990
46,6
500.
060
1.40
4.68
0.76
012
84.0
2.00
466.
010.
0009
0.00
2999
.94%
02:3
0 PM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
53.6
84.0
26,0
0088
025
,120
41,8
670.
058
1.26
4.20
0.68
212
79.0
2.00
466.
010.
0009
0.00
2999
.93%
Aver
age
930
min
.49
.00
14.0
''51
.1
5.
042
.956
.153
.981
.016
,825
540
16,2
8527
,142
1.10
625
.44
84.8
913
.782
1239
.52.
0046
6.01
0.02
700.
0901
99.8
9%
06:3
0 AM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
54.1
79.0
7,65
020
07,
450
12,4
170.
013
0.38
1.26
0.20
412
00.0
2.00
466.
010.
0009
0.00
2999
.77%
07:0
0 AM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
54.1
79.0
7,40
018
07,
220
12,0
330.
012
0.37
1.22
0.19
812
05.0
2.00
466.
010.
0009
0.00
2999
.76%
07:3
0 AM
30 m
in.
49.0
014
.0''
51.1
5.0
42.9
56.1
54.1
79.0
6,90
014
06,
760
11,2
670.
009
0.34
1.14
0.18
512
09.0
2.00
466.
013,
050
0.00
090.
0029
99.7
5%
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30 m
in.
30
min
.
Mon
itorin
g W
ell G
augi
ng D
ata
Cal
ibra
tion
Info
rmat
ion
DTP
DTW
Prod
.(ft)
DTP
DTW
Prod
.(ft)
DTP
DTW
Prod
.(ft)
C
alib
ratio
n G
as
47.3
147
.31
49.7
649
.76
Cal
ibra
tion
Gas
Con
cent
ratio
n (P
PMv)
Res
pons
e Fa
ctor
(TVA
-100
0)
47.1
047
.10
48.0
548
.05
Num
ber o
f Car
bons
39.6
139
.61
40.0
240
.02
Influ
ent P
ipe
Dia
.44
.60
44.6
0
44
.87
44.8
7
E
fflue
nt S
tack
Dia
.
47.0
547
.05
47.1
547
.15
This
Eve
nt's
Tot
als
Tot
al L
bs o
f Car
bon
Tot
al L
bs o
f Met
hane
Tot
al L
bs o
f Hyd
roca
rbon
Equ
iv. G
al. o
f Hyd
roca
rbon
s
Tot
al G
allo
ns o
f Liq
uid
(Gro
undw
ater
)
T
otal
Ope
ratin
g Ti
me
(Hou
rs)
Cum
ulat
ive
( To
Dat
e ) T
otal
s
T
otal
Lbs
of C
arbo
n
Tot
al L
bs o
f Met
hane
Tot
al L
bs o
f Hyd
roca
rbon
Equ
iv. G
al. o
f Hyd
roca
rbon
s
T
otal
Gal
lons
of L
iqui
d
2:00
PM
Dra
wdow
n
-0.9
5
24.08
59.6
5
2.73
199.
10
-0.1
0
-0.2
7
3892
0.00
Met
hane
10,0
00
600 1 2
3050
.00
1372
.920
8457
.22
32.3
21
2333
.93
40.5
7
Augu
st 2
4, 2
017
3
MW
-3
(Hyd
roca
rbon
)
Extr
actio
n Po
int(s
) Dat
a:
Com
poun
dsN
on-M
etha
neAf
ter o
ff-ga
s tre
atm
ent
Clie
ntSi
teAd
dres
sK
enny
McC
oy
Befo
re o
ff-ga
s tre
atm
ent
Tota
l
Com
men
ts:
-2.4
5
Aver
age
Rat
e:
Hyd
roca
rbon
Rem
oved
4"H
g
Res
ults
(ft)
Afte
r
50.3
5Av
erag
e R
ate:
Wel
lVa
cuum
Rea
ding
s at
:
Num
ber
MW
-3
Befo
re
-7.1
1 '' H
2OM
W-1
MW
-7
MW
-2-0
.83
'' H2O
-1.3
4 '' H
2OM
W-4
-0.5
2 '' H
2O
199.
10
-0.4
1
Aver
age
Rat
e:99
.92%
Aver
age
/ Tot
als:
3,05
0
53
3.03
2.73
20.
0439
9To
tal R
emov
ed:
0.14
681
Aver
age
Rat
e:Av
erag
e R
ate:
59.6
532
.321
0102030405060Recovery Flow Rates in ACFM
Tim
e
MW
-3 F
low
Dat
a N
ot U
sed
Not
Use
d
Not
Use
d N
ot U
sed
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
Recovery Rate (in gallons per hour)
Tim
e
(MW
-3)
Equivalent
Hyd
rocarbon
Recov
ery Ra
te (in GPH
), from
the follo
wing extractio
n wells:
Attachment B
top related