4101_Guilford_CityHighPoint_Riverdale_MSWLF_CAReport_FID1389341_20200207

SEABOARD GROUP II AND THE CITY OF HIGH POINT
February 7, 2020
Mr. Joe Ghiold, Project Manager
North Carolina Department of Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Re: Remedial Action Progress Report, 2019 Fourth Quarter
Former Seaboard Chemical and Riverdale Drive Landfill Site
Jamestown, Guilford County, North Carolina
Dear Mr. Ghiold:
The Seaboard Group II and the City of High Point (Parties) are providing this 2019 Fourth
Quarter Remedial Action Progress Report for the former Seaboard Chemical Corporation facility
and the closed Riverdale Drive Landfill located in Jamestown, NC (Site).
During the fourth quarter of 2019 the mechanical and phytoremediation treatment systems
processed 826,206 gallons of extracted groundwater and leachate. Also during the fourth quarter
of 2019 the following shutdowns exceeding one day in duration occurred:
Date
Duration
Reason for Shutdown
October 3, 2019
7.0 days
Citric wash of entire system
October 14, 2019
63.0 days
System shutdown for PLC/HMI upgrade
The PLC/HMI control system update began on October 3, 2019 with the planned full system
citric wash and was completed on December 16, 2019 when the system was put into full-time
operations following upgrade to the PLC/HMI system. The citric wash of the entire system was
conducted as a precautionary measure while the system was shutdown for the PLC/HMI work.
In addition, equipment associated with the non -operational PhotoCat system was completely
removed from the treatment system enclosures and recycled or disposed of as appropriate. The
treatment system has been restarted and is fully operational with the new PLC/HMI system
functioning as anticipated.
The attached tables provide the results of the full scale operation of the treatment system during
the fourth quarter of 2019, including: Operating Data, Process Flow Data, Static Water Level
Data, System Chemistry, Utility Data Use, Fourth Quarter 2019 Contaminant Removal
Efficiency, and Annual Summary of Contaminant Removal Efficiency.

Please contact Mr. Gary D. Babb, P.G. (919/605-4719) or Craig Coslett (610/435-1151) if there
are any questions or comments. Please direct correspondence related to this matter to:
Mr. Craig Coslett
de maximis, inc.
1550 Pond Road, Suite 120
Allentown, PA 18104
Communications via electronic mail should be directed to [e-mail] and
[e-mail].
Respectfully,
Seaboard Group II and City of High Point
'4�7 za--
Gary D. Babb, P.G.
President
cc: Dave Nutt, Esq. - Seaboard Trustee
Steve Anastos - Seaboard Trustee
Craig Coslett — Project Oversight Coordinator
Terry Houk - City of High Point Trustee
Amos Dawson, Seaboard Group II Counsel
Jackie Drummond - NCDEQ Division of Solid Waste

SEABOARD GROUP II & THE CITY OF HIGH POINT
QUARTERLY LOG -Q42019
Quarterly
Units of
INITIAL
WEEK
WEEK
WEEK
WEEK
WEEK
WEEK
WEEK
WEEK
WEEK
WEEK 10
WEEK 11
WEEK 12
WEEK 13
Totals
Measure
METER READING
LEACHATE (GALLONS)
449,030
492,201
492,201
492,201
492,201
492,201
492,201
492,201
492,201
492,201
492,201
507,134
660,819
820,493
371,463
GALLONS
LSl-RWs (GALLONS)
2,774,312
2,789,305
2,789,305
2,789,305
2,789,305
2,789,305
2,789,305
2,789,305
2,789,305
2,789,305
2,789,305
2,790,312
2,829,714
2,877,242
102,930
GALLONS
PWDR1(GALLONS)
2,183,632
2,233,452
2,233,452
2,233,452
2,233,452
2,233,452
2,233,452
2,233,452
2,233,452
2,233,452
2,233,452
2,241,149
2,339,237
2,437,473
253,841
GALLONS
SIS-RWs(GALLONS)
1,530,230
1,538,191
1,538,191
1,538,191
1,538,191
1,538,191
1,538,191
1,538,191
1,538,191
1,538,191
1,538,191
1,540,843
1,570,038
1,594,864
64,634
GALLONS
PHYTO DISCH. (GALLONS)
7,586,762
7,726,725
7,726,725
7,726,725
7,726,725
7,726,725
7,726,725
7,726,725
7,726,725
7,726,725
7,726,725
7,769,374
8,086,748
8,412,968
826,206
GALLONS
AIR STRIP. RUNTIME (FIRS)
4,796
4,875
4,875
4,875
4,875
4,875
4,875
4,875
4,875
4,875
4,875
4,892
5,048
5,216
419.88 (19%)
HOURS
LSl COMP RUN (HOURS)
5,259
5,334
5,334
5,334
5,334
5,334
5,334
5,334
5,334
5,334
5,334
5,370
5,529
5,697
438
HOURS
LSl COMP LOAD (HOURS)
3,414
3,455
3,455
3,455
3,455
3,455
3,455
3,455
3,455
3,455
3,455
3,463
3,522
3,577
163
HOURS
LS2 COMP RUN (HOURS)
15,690
15,750
15,750
15,750
15,750
15,750
15,750
15,750
15,750
15,750
15,750
15,780
15,930
16,080
390
HOURS
LS2 COMP LOAD (HOURS)
1,602
1,609
1,609
1,609
1,609
1,609
1,609
1,609
1,609
1,609
1,609
1,613
1,631
1,648
46
HOURS
ELECT. UPPER (kW-Hr)
12,592
12,612
12,659
12,706
12,753
12,800
12,847
12,893
12,940
12,987
13,034
13,081
13,171
13,248
656
KW-HR
WATER METER (CF)
421,174
421,462
421,462
421,462
421,462
421,462
421,462
421,462
421,462
421,462
421,462
429,311
429,452
429,590
62,952
GALLONS
BACKWASH PUMP (GAL.)
245,524
247,330
247,330
247,330
247,330
247,330
247,330
247,330
247,330
247,330
247,330
248,350
248,800
248,998
3,474
GALLONS
IRRIGATION ZONES (GALLONS):
ZONE 1
1,298,625
1,298,625
1,298,625
1,298,625
1,298,625
1,298,625
1,298,625
1,298,625
1,298,625
1,298,625
1,298,625
116
272
21,535
21,535
GALLONS
ZONE 2
1,253,625
1,245,491
1,245,491
1,245,491
1,245,491
1,245,491
1,245,491
1,245,491
1,245,491
1,245,491
1,245,491
13,994
35,298
56,621
48,487
GALLONS
ZONE 3
1,313,751
1,322,924
1,322,924
1,322,924
1,322,924
1,322,924
1,322,924
1,322,924
1,322,924
1,322,924
1,322,924
1,868
24,774
48,353
57,526
GALLONS
ZONE
1,209,774
1,217,749
1,217,749
1,217,749
1,217,749
1,217,749
1,217,749
1,217,749
1,217,749
1,217,749
1,217,749
587
20,167
40,034
48,009
GALLONS
ZONE 5
1,330,715
1,340,447
1,340,447
1,340,447
1,340,447
1,340,447
1,340,447
1,340,447
1,340,447
1,340,447
1,340,447
611
23,370
45,893
55,625
GALLONS
ZONE 6
1,348,506
1,358,436
1,358,436
1,358,436
1,358,436
1,358,436
1,358,436
1,358,436
1,358,436
1,358,436
1,358,436
580
23,641
46,477
56,407
GALLONS
ZONE 7
1,336,436
1,346,248
1,346,248
1,346,248
1,346,248
1,346,248
1,346,248
1,346,248
1,346,248
1,346,248
1,346,248
805
24,315
48,139
57,951
GALLONS
ZONE 8
1,373,406
1,382,340
1,382,340
1,382,340
1,382,340
1,382,340
1,382,340
1,382,340
1,382,340
1,382,340
1,382,340
820
24,210
48,138
57,072
GALLONS
ZONE 9
1,346,912
1,357,240
1,357,240
1,357,240
1,357,240
1,357,240
1,357,240
1,357,240
1,357,240
1,357,240
1,357,240
656
23,732
47,215
57,543
GALLONS
ZONE 10
1,411,753
1,421,119
1,421,119
1,421,119
1,421,119
1,421,119
1,421,119
1,421,119
1,421,119
1,421,119
1,421,119
825
24,993
49,191
58,557
GALLONS
ZONE 11
642,735
647,643
647,643
647,643
647,643
647,643
647,643
647,643
647,643
647,643
647,643
248
14,642
28,293
33,201
GALLONS
ZONE 12
1,239,582
1,248,671
1,248,671
1,248,671
1,248,671
1,248,671
1,248,671
1,248,671
1,248,671
1,248,671
1,248,671
751
23,405
45,789
54,878
GALLONS
ZONE 13
1,042,880
1,051,387
1,051,387
1,051,387
1,051,387
1,051,387
1,051,387
1,051,387
1,051,387
1,051,387
1,051,387
705
20,987
41,250
49,757
GALLONS
ZONE 14
1,080,567
1,089,180
1,089,180
1,089,180
1,089,180
1,089,180
1,089,180
1,089,180
1,089,180
1,089,180
1,089,180
670
20,504
40,020
48,633
GALLONS
ZONE 15
808,897
817,805
817,805
817,805
817,805
817,805
817,805
817,805
817,805
817,805
817,805
708
21,168
41,715
50,623
GALLONS
Zone 16
511,794
520,614
520,614
520,614
520,614
520,614
520,614
520,614
520,614
520,614
520,614
726
7,079
11,033
19,853
GALLONS
DAILYAVERAGE
Average
Units
AVERAGE RUNTIME
256%
0%
0%
0%
0%
0%
0%
0%
0%
0%
10%
93%
100%
35%
Percent
AVERAGE FLOW (GPM)
32.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4.2
31.5
32.4
7.7
GPM
EFF. DISCH. (GALLONS)
46,654
6,093
45,339
46,603
11,130
GPD
TOTAL INFLUENT (GALLONS)
38,648
3,756
45,767
47,181
10,412
GPD
INF. LEACHATE (GALLONS)
14,390
2,133
21,955
22,811
4,715
GPD
INF. LS1-RWs (GALLONS)
4,998
144
5,629
6,790
1,351
GPD
INF. PWDR) (GALLONS)
16,607
1,100
14,013
14,034
3,519
GPD
INF. SIS-RWs (GALLONS)
2,654
379
4,171
3,547
827
GPD
WEEKLY RUNTIME (DAYS)
7.7
0.7
6.5
7.0
1.7
DAYS/WK
LSl COMP RUN (HOURS)
25.0
5.1
22.7
24.0
5.9
HRS/DAY
LSl COMP LOAD (HOURS)
13.7
1.1
8.4
7.9
2.4
HE/DAY
LS2 COMP RUN (HOURS)
20.0
4.3
21.4
21.4
5.2
HE/DAY
LS2 COMP LOAD (HOURS)
2.3
0.6
2.6
2.4
0.6
HRS/DAY
ELECTRICITY(kW-Hr)
6.7
4.3
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
12.9
11.0
7.3
kW-HR/DAY
CITY WATER (GALLONS)
96.0
1,121
20
20
723
GPD
BACKWASH PUMP (GAL.)
602.0
146
64
28
65
GPD
EFFLUENT LABS
Fe (mg/L)
0.8
0.61
0.29
0.57
0.5
mg/L
pH
6.29
6.17
6.64
6.53
6.4
m/L
ORP
201
162
166
127
152
mV
COND
1,441
1,147
1,267
1,282
1,232
uS/cm
TDS(mg/L)
1007
799
899
905
868
mg/L
TSS (mg/L)
11
6
3
2
3.7
mg/L
COD (mg/L)
75
83
85
94
87
mg/L
WELL LEVELS
Average
Change
OWDR-4
682.16
676.09
676.82
677.55
676.8
(5.34)
OWDR-2
681.90
675.85
676.62
677.39
676.6
(5.28)
PWDR-1
689.23
657.75
674.69
674.70
669.0
(20.18)
OWDR-3
681.80
686.67
686.67
686.7
4.87
PW-6D (696.79)
680.37
684.78
684.78
684.8
4.41
OWLFS-2
680.00
PW-16D
680.52
PW-15D
683.12
(683.12)
ESTIMATED LAKE LEVEL
682.6
682.9
682.3
682.6
682.20
682.10
682.4
SOURCE WATER
PWDR-1
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
LEACHATE (LCHT)
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
LS-1 RECOVERY WELLS
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
SIS RECOVERY WELLS
IYES
YESI
NOI
NOI
NO
NO
NO
NOI
N01
NOI
NOI
YESI
YES
YES

SEABOARD Q4 2019
C, AA/A!A
8
R,
S - INF. LEACHATE (GALLONS)
—M— INF. LS1-RWs (GALLONS)
—* INF. PWDR1 (GALLONS)
4 --X— INF. SIS-RWs (GALLONS)
EFF. DISCH. (GALLONS)
3 WEEKLY RUNTIME (DAYS)
2
1
w

695.00
680.00
J
W
J 675.00
J
J
W
670.00
665.00
655.00
SEABOARD Q4 2019
0 1 2 3 4 5 6 7 8
WEEK
9 10 11 12 13
OWDR-4
OWDR-2
PWDR-1
OWDR-3
PW-6D (696.79)
tOWLFS-2
tPW-16D
DPW-15D
ESTIMATED LAKE LEVEL

7
0
5
LL 3
2
1
in
1 2 3 4 5 6
SEABOARD Q4 2019
7
WEEK
8 9 10 11 12 13
1,400
1,200
1,000
O
Fe (mg/L)
800
o
f pH
p
--�—TSS (mg/L)
Z
O
U
--X—ORP
600 a
-I-COND
o
fTDS (mg/L)
—CCD (mg/L)
400
200

SEABOARD Q4 2019
14.0
12.0
10.0 c7
a
ce
W
a
J
8.0 c
--$--LS1 COMP RUN (HOURS)
z
O
fLS1 COMP LOAD (HOURS)
a
g
— LS2 COMP RUN (HOURS)
6.0 N
z
LS2 COMP LOAD (HOURS)
O
ELECTRICITY (kW-Hr)
W
4.0 a
2.0

Water Treatment System
Dioxane
Chlorinated
ethenes
Chlorinated
ethanes
Other
organics
Total
Mass
kg
kg
kg
kg
k
Step 1
Influent'
3.7
11.7
5.0
6.5
26.9
Mechanical
Effluent'
3.8
0.22
0.10
0.054
4.2
Treatment
System
% Contaminant Removal
<
98.1
98.0
99.2
84.3
Irrigation water
3,800
222
100
54
4,200
Drainage water
181
ND
ND
4.2
185
Lys 2 (vol. scaling factor, 292)
Lys 7 (vol. scaling factor, 386)
730
ND
ND
228
958
Lys 8 vol. scalin actor, 608
121
ND
ND
18.2
139
Lys 9 vol. scalin actor, 291
166
ND
ND
ND
166
Step 2
Lys 10 vol. scalin actor, 513
66.7
ND
ND
37.4
104
Phytoremediation
Lys 11A vol. scalin actor, 365
500
ND
ND
ND
500
System
Lys 11B vol. scalingfiactor, 1,907
114
ND
ND
ND
114
Lys 12E vol. scalin actor, 159
397
ND
ND
ND
397
Lys 12W vol. scalin actor, 377
35
ND
ND
ND
35
Lys 13E vol. scalin actor, 199
469
ND
ND
18.0
487
Lys 13W vol. scalin actor, 271
175
ND
ND
13.8
189
Lys 14 vol. scalin actor, 358
--
ND
ND
--
--
Lys 15 vol. scalingfiactor, 1,923
142
ND
ND
1827 *
1969
Averse n=13
238
ND
ND
26.6
273
Step 2
% Contaminant Removal
93.7%
100%
100%
50.7%
93.5%
Overall Percent Contaminant Removal
93.6%
100%
100%
99.6%
99.0%
I Apparent variations in the influent and effluent mass are a result of variations related to residence time through the mechanical treatment system.
Averages calculated from a greater number of samples show that influent and effluent mass are essentially equal, as expected.

Phytoremediation
System
% Contaminant Removal
Dioxane
Chlorinated
ethenes
Chlorinated
ethanes
Other
organics
Total
mass
influent, g
10,280
370
200
590
11,400
Q1
effluent, g
1,125
ND
ND
33.2
1,278
% removal
87.9
100
100
94.4
88.8
influent, g
10,000
180
110
90
10,200
Q2
effluent, g
639
ND
ND
3.5
642
% removal
93.6
100
100
96.1
93.7
influent, g
10,500
82
70
60
10,600
Q3
effluent, g
238
ND
ND
4.1
242
% removal
97.7
100
100
93.2
97.7
influent, g
3,800
222
100
54.0
4,200
Q4
effluent, g
238
ND
ND
26.6
273
% removal
93.7%
100%
100%
50.7%
93.5%
influent, g
34,580
854
480
794
36,400
Annual
effluent, g
2,240
ND
ND
91.5
2,435
Totals
o
/o removal
0
93.5/
100%
100%
88.5%
°
93.3/