4101_Guilford_CityHighPoint_Riverdale_Seaboard_MSWLF_CA_ProgressReport_FID1321530_20190523

SEABOARD GROUP II AND THE CITY OF HIGH POINT
May 23, 2019
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: Quarterly Remedial Action Progress Report, 1st Quarter 2019
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 1 st Quarter 2019
Remedial Action Progress Report for the former Seaboard Chemical Corporation facility and the
closed Riverdale Drive Landfill located in Jamestown, NC (Site).
During the first quarter of 2019 the mechanical and phytoremediation treatment systems
processed 3,096,949 gallons of extracted groundwater and leachate. Also during the first quarter
of 2019 the following shutdowns exceeding one day in duration occurred:
Date
Duration
Reason for Shutdown
January 3, 2019
4.0
Replace several Profibus connectors
January 10, 2019
1.0
Profibus communication issue at LS-2
January 11, 2019
5.0
Communication issue at LS-2, reprogram valve
January 21, 2019
4.0
Profibus communication issue at LS-2
February 4, 2019
1.5
Communication failure at FCV-399-4
February 6, 2019
1.0
LS-1 force main clogged
February 19, 2019
7.5
Lime pump failed, replaced VFD and motor
February 26, 2019
1.0
Communication loss, restarted system
Several Operation and Maintenance (O&M) activities are currently in the planning and design
stage to improve the operation of the treatment system and overall condition of the Site. These
O&M activities include the following:
• Update the PLC/HMI control system to optimize the groundwater/leachate extraction and
treatment system operations. This update will include the installation of new hardware,
wiring of new equipment, and installation of new programmable control logic. During
this update, the PhotoCat equipment and controllers will be completely removed from the
treatment system enclosure and recycled.
• Perform maintenance activities at the former Seaboard Chemical property to address
minor security and safety concerns identified during a recent self -audit.

The attached tables provide the results of the full scale operation of the treatment system during
the first quarter of 2019, including: Operating Data, Process Flow Data, Static Water Level Data,
System Chemistry, Utility Data Use, and Contaminant Removal Efficiency.
Summary
Several O&M activities are in the planning and design stage as discussed above. The PLC/HMI
control system update and the former Seaboard Chemical O&M activities will be implemented
during the 2nd and 3rd quarters of 2019.
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
Gary D. Babb, P.G.
President
cc: Dave Nutt, Esq. - Seaboard Trustee
Steve Anastos - Seaboard Trustee
Ed Gunderson - Seaboard Group Technical Committee
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 -Q42018
Quarterly
Units of
INITIAL
WEEK
WEEK2
WEEK
WEEK
WEEKS
WEEK
WEEK
WEEKS
WEEK
WEEK 10
WEEK 11
WEEK 12
WEEK 13
Totals
Measure
METER READING
00
ry
\
N
ti
ti
N
ti
N
ti
\
LEACHATE (GALLONS)
6,432,923
6,432,923
6,510,491
6,607,450
6,684,766
6,808,600
6,894,062
7,041,058
7,041,058
7,201,187
7,368,984
7,541,599
7,716,269
7,860,234
1,427,311
GALLONS
LSl-RWs (GALLONS)
1,568,851
1,568,851
1,592,403
1,621,843
1,645,318
1,681,822
1,711,667
1,739,197
1,739,197
1,749,724
1,759,236
1,770,501
1,781,106
1,787,802
218,951
IGALLONS
PWDR1(GALLONS)
8,540,402
8,540,402
8,607,718
8,691,863
8,758,960
8,889,780
8,979,784
9,132,884
9,132,884
9,237,202
9,353,432
9,478,894
9,604,336
9,726,594
1,186,192
GALLONS
SIS-RWs (GALLONS)
902,392
902,392
915,323
931,488
944,377
967,906
984,310
1,011,576
1,011,576
1,030,967
1,053,545
1,076,556
1,099,670
1,120,369
217,977
GALLONS
PHYTO DISCH. (GALLONS)
8,050,274
8,050,274
8,236,087
8,468,353
8,653,562
8,971,426
9,195,090
9,557,626
9,557,626
9,854,814
10,180,692
10,523,120
10,856,242
11,147,223
3,096,949
GALLONS
AIR STRIP. RUNTIME (FIRS)
915
915
988
1,079
1,152
1,313
589
779
779
905
1,050
1,208
1,371
1,532
1,449 (66.3%)
HOURS
LSl COMP RUN (HOURS)
22
49
71
238
356
567
567
714
866
1,031
1,200
1,368
1,368
HOURS
LSl COMP LOAD (HOURS)
7
17
24
102
182
320
320
405
504
609
718
819
819
HOURS
LS2 COMP RUN (HOURS)
11,426
11,426
11,489
11,567
11,630
11,780
11,890
12,070
12,070
12,170
12,310
12,460
12,610
12,770
1,344
HOURS
LS2 COMP LOAD (HOURS)
1,210
1,210
1,217
1,225
1,232
1,246
1,255
1,270
1,270
1,280
1,293
1,305
1,318
1,330
120
HOURS
ELECT. UPPER (kW-Hr)
10,521
10,521
10,657
10,826
10,961
11,056
11,125
11,241
11,294
11,378
11,471
11,548
11,632
11,702
1,181
KW-HR
WATER METER (CF)
412,123
412,123
412,240
412,387
412,504
412,600
412,674
412,888
412,888
413,168
413,560
413,760
414,000
414,074
14,594
GALLONS
BACKWASH PUMP (GAL.)
210,402
210,402
210,635
210,927
211,160
211,160
211,164
211,164
211,164
212,102
213,012
213,926
214,837
214,837
4,435
GALLONS
IRRIGATION ZONES (GALLONS):
ZONE 1
715,113
715,113
727,444
742,857
755,148
775,949
791,049
814,815
814,815
833,533
853,979
876,228
897,785
915,423
200,310
GALLONS
ZONE 2
677,531
677,531
689,356
704,137
715,924
735,986
750,452
772,922
772,922
792,069
812,776
834,399
855,404
873,164
195,633
GALLONS
ZONE 3
702,178
702,178
715,453
732,046
745,278
767,648
782,476
807,124
807,124
826,374
848,216
870,755
891,820
909,040
206,862
GALLONS
ZONE
672,459
672,459
683,494
697,287
708,286
727,053
739,533
759,992
759,992
776,528
795,918
815,684
834,367
849,815
177,356
GALLONS
ZONE 5
731,381
731,381
744,061
759,912
772,551
793,096
807,533
830,914
830,914
850,244
872,103
895,151
917,551
934,977
203,596
GALLONS
ZONE 6
732,404
732,404
745,766
762,468
775,786
797,912
812,777
837,080
837,080
857,032
879,755
903,614
926,374
944,289
211,885
GALLONS
ZONE 7
717,275
717,275
730,118
746,172
758,974
780,750
795,458
819,335
819,335
838,272
860,681
883,954
909,083
927,139
209,864
GALLONS
ZONE 8
754,616
754,616
764,744
777,405
787,500
819,816
835,036
589,342
589,342
880,475
902,656
926,757
951,764
970,200
215,584
GALLONS
ZONE 9
729,882
729,882
742,156
757,499
769,733
791,823
806,519
831,311
831,311
851,030
872,417
895,990
918,669
936,651
206,769
GALLONS
ZONE 10
770,575
770,575
784,693
802,341
816,414
840,214
855,601
881,923
881,923
902,882
926,646
951,605
975,917
995,671
225,096
GALLONS
ZONE 11
307,522
307,522
313,531
321,042
327,032
337,995
344,592
355,725
355,725
365,787
376,660
388,132
400,456
410,399
102,877
GALLONS
ZONE 12
626,487
626,487
638,956
654,542
666,970
689,512
703,449
727,324
727,324
748,258
771,012
794,948
818,200
836,396
209,909
GALLONS
ZONE 13
511,507
511,507
520,845
532,517
541,824
553,978
566,350
587,592
587,592
605,317
618,630
631,967
645,438
662,877
151,370
GALLONS
ZONE 14
569,578
569,578
578,970
590,710
600,072
612,710
624,881
641,602
641,602
653,769
667,037
681,311
695,061
711,821
142,243
GALLONS
ZONE 15
291,675
291,675
298,244
306,455
313,003
323,955
333,450
348,384
348,384
361,220
375,189
390,505
405,548
423,740
132,065
GALLONS
Zone 16
2,564
5,770
8,326
21,792
30,583
46,455
46,455
59,842
75,024
90,520
105,827
124,055
124,055
GALLONS
DAILYAVERAGE
Average
Units
AVERAGE RUNTIME
0%
43%
54%
43%
96%
65%
87%
0%
75%
86%
95%
97%
96%
64%
%
AVERAGE FLOW (GPM)
0.0
18.4
23.0
18.4
31.5
22.2
31.5
0.0
29.5
32.3
34.0
33.0
28.9
23.3
GPM
EFF. DISCH. (GALLONS)
26,545
33,181
26,458
45,409
31,952
45,317
42,455
46,554
48,918
47,589
41,569
33,534
GPD
TOTAL INFLUENT (GALLONS)
25,910
32,387
25,825
44,955
31,674
44,362
42,052
45,160
47,479
47,690
41,945
33,034
GPD
INF. LEACHATE (GALLONS)
11,081
13,851
11,045
17,691
12,209
18,375
22,876
23,971
24,659
24,953
20,566
15,483
GPD
INF. LS1-RWs (GALLONS)
3,365
4,206
3,354
5,215
4,264
3,441
1,504
1,359
1,609
1,515
957
2,368
GPD
INF. PWDR) (GALLONS)
9,617
12,021
9,585
18,689
12,858
19,138
14,903
16,604
17,923
17,920
17,465
12,825
GPD
INF. SIS-RWs (GALLONS)
1,847
2,309
1,841
3,361
2,343
3,408
2,770
3,225
3,287
3,302
2,957
2,358
GPD
WEEKLY RUNTIME (DAYS)
3.0
3.8
3.0
6.7
4.5
6.9
5.2
6.0
6.6
6.8
6.7
4.6
DAYS/WK
LSl COMP RUN (HOURS)
3.1
3.9
3.1
23.9
16.9
26.4
21.0
21.7
23.6
24.1
24.0
14.7
HRS/DAY
LSl COMP LOAD (HOURS)
1.1
1.3
1.1
11.1
11.4
17.3
12.1
14.1
15.0
15.6
14.4
8.8
HRS/DAY
LS2 COMP RUN (HOURS)
9.0
11.2
9.0
21.4
15.7
22.5
14.3
20.0
21.4
21.4
22.9
14.5
HRS/DAY
LS2 COMP LOAD (HOURS)
1.0
1.2
0.9
2.0
1.3
1.9
1.4
1.9
1.7
1.9
1.7
1.3
HRS/DAY
ELECTRICITY(kW-Hr)
19.4
24.2
19.3
13.6
9.9
14.5
8.8
12.0
13.3
11.0
12.0
10.0
12.9
kW-HR/DAY
CITY WATER (GALLONS)
17.0
21.0
17.0
14
11
27
40
56
29
34
11
158
GPD
BACKWASH PUMP (GAL.)
33.0
42.0
33.0
1
134
130
131
130
49
GPD
EFFLUENT LABS
Fe (mg/L)
0.93
3
0.39
0.55
0.62
0.7
0.5
1.78
0.64
0.31
0.9
mg/L
pH
6.5
6.69
6.45
6.69
6.06
6.46
6.49
6.35
6.34
6.20
6.4
m/L
ORP
179
225
113
132
148
59
47
46
40
57
96
mV
COND
1,109
1727
1243
1223
1,062
1,118
1,170
1,213
1,221
1,032
1,223
u5/cm
TDS(mg/L)
771
1243
885
867.5
750
791
829
860
863
727
868
mg/L
TSS (mg/L)
11
0
1
4
2
6
0
3
5
2.3
mg/L
COD (mg/L)
68
146
105
87
52
70
83
92
84
58
86
mg/L
WELL LEVELS
Average
Change
OWDR-4
682.16
676.35
676.16
676.11
677.19
676.70
676.58
676.73
676.62
676.6
(5.61)
OWDR-2
681.90
675.88
675.78
675.72
676.80
676.32
676.20
676.35
676.23
676.2
(5.74)
PWDR-1
689.23
657.34
655.53
655.64
655.94
655.54
655.76
657.10
657.35
656.3
(32.95)
OWDR-3
681.80
683.01
682.34
683.44
682.81
682.72
682.46
682.8
1.00
PW-6D (696.79)
680.37
OWLFS-2
680.00
PW-16D
680.52
PW-15D
683.12
682.40
682.02
683.41
682.26
682.31
681.94
682.4
(0.73)
ESTIMATED LAKE LEVEL
682.6
682.5
682.8
682.5
682.4
682.4
682.4
682.4
682.4
682.4
682.4
682.4
682.40
682.40
682.4
SOURCE WATER
PWDR-1
NO
NO
YES
YES
YES
YES
YES
YES
No
YES
YES
YES
YES
YES
LEACHATE (LCHT)
NO
NO
YES
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES
LS-1 RECOVERY WELLS
NO
NO
YES
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES
SIS RECOVERY WELLS
NO
NO
YES
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES

50000
; 40000
O
J
J
Q
O
J
LL 30000
J
a
0
W
Q
W
G 20000
10000
!c
SEABOARD Q1 2019
1 2 3 4 5 6 7 8 9 10 11 12 13 14
WEEK
8
31
5
—■ INF. LEACHATE (GALLONS)
—FINF. LS1-RWs (GALLONS)
4
—*- INF. PWDR1 (GALLONS)
--4A—INF. SIS-RWs (GALLONS)
3 --I— EFF. DISCH. (GALLONS)
WEEKLY RUNTIME (DAYS)
0a
1
0

695.00
685.00
680.00
J
W
W
J
J
J
W
3: 675.00
670.00
665.00
SEABOARD Q1 2019
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13
WEEK
tOWDR-4
fOWDR-2
PWDR-1
-+(-OWDR-3
-I- PW-6D (696.79)
-40--OWLFS-2
PW-16D
PW-15D
ESTIMATED LAKE LEVEL

8
7
6
5lot
H
4
ti
3
2
1
0
SEABOARD Q1 2019
2,000
1,800
1,600
1,400
1,200 O Fe (mg/L)
o pH
1,000 p TSS (mg/L)
O ORP
v
800 Q� -*- CO N D
tTDS (mg/L)
600 COD (mg/L)
400
200
-
of N
1 2 3 4 5 6 7 8 9 10 11 12 13
WEEK

25.0
Ln 20.0
W
Q
W
Q
J
0 15.0
cr
O
Ln
IA
W
a
all
1 2 3 4 5 6 7 8 9 10 11 12 13
WEEK

Water Treatment System
Dioxane
Chlorinated
ethenes
Chlorinated
ethanes
Other
organics
Total
Mass
kg
kg
kg
kg
k
Step 1
Influent 19.3
31.6
16.6
18.9
76.3
Mechanical
Effluent'
10.28
0.37
0.20
0.59
11.4
Treatment
System
% Contaminant Removal
<
98.8%
98.8%
96.9%
85.0%
Irrigation water
g
9
9
9
9
10,280
370
200
590
11,400
Drainage water*
2,300
ND
ND
ND
2,300
Lys 2 (vol. scalingfactor, 258)
Lys 7 (vol. scalingfactor, 340)
1,374
ND
ND
91
1,465
Step 2
Lys 8 (vol. scalingfactor, 388)
59
ND
ND
125
184
Phyto ation
Lys 10 (vol. scalingfactor, 368)
1,741
ND
ND
ND
1,741
Syystemstem
Lys 11B (vol. scalingfactor, 686)
781
ND
ND
ND
781
Lys 12 (vol. scalingfactor, 214)
1,303
ND
ND
16.6
1,320
Lys 13 (vol. scalingfactor, 221)
1,156
ND
ND
ND
1,156
Averse (n=7)
1,245
ND
ND
33.2
1,278
Step 2
% Contaminant Removal
87 9%
100%
100%
94.4%
88.8%
Overall Percent Contaminant Removal
86.6%
100%
100%
99.8%
98.3%
1 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.