4101_Guilford_CityHighPoint_Riverdale_MSWLF_CA_FID1285123_20190225

SEABOARD GROUP II AND THE CITY OF HIGH POINT
February 25, 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, 4th Quarter 2018
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 4th Quarter 2018
Remedial Action Progress Report for the former Seaboard Chemical Corporation facility and
closed Riverdale Drive Landfill located in Jamestown, NC (Site).
During the fourth quarter of 2018, the mechanical and phytoremediation treatment systems
processed 2,250,383 gallons of extracted groundwater and leachate. Also during the fourth
quarter of 2018, the following shutdowns exceeding one day in duration occurred:
Date
Duration
Reason for Shutdown
October 12, 2018
2.5 days
Power loss due to Hurricane Michael
October 18, 2018
3.5 days
Communication issue at LS-1
October 26, 2018
2.5 days
Communication issue at LS-1
November 4, 2018
1.0 days
Power loss
November 10, 2018
2.0 days
Unknown — likely communication issue
December 4, 2018
8.0 days
Fiber optic cable replacement from LS-1
December 14, 2018
2.5 days
MV-420-A control valve fault
December 21, 2018
6.0 days
Unknown — likely communication issue
December 28, 2018
3.0 days
Unknown — likely communication issue
When Hurricane Michael moved through the area in mid -October, the storm resulted in damage
to communication components which are still impacting system operations. The fiber optics
cable which provides communications from LS-1 to the primary treatment building was replaced
during the shutdown in early December 2018. Further modifications to upgrade and streamline
the control systems are currently under evaluation.

The attached tables provide the results of the full scale operation of the treatment system during
the fourth quarter of 2018, including: Operating Data, Process Flow Data, Static Water Level
Data, System Chemistry, Utility Data Use, and Contaminant Removal Efficiency.
Summary
The effects of Hurricane Michael resulted in damage to several communication system
components. The fiber optic cable from LS-1 to the treatment building has been replaced. In
addition, hardware and software modifications are being evaluated to further reduce or eliminate
future communication issues.
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
WEEK
WEEK
WEEK
WEEKS
WEEK
WEEK
WEEKS
WEEK
WEEK 10
WEEK 11
WEEK 12
WEEK 13
Totals
Measure
METER READING
LEACHATE (GALLONS)
5,387,950
5,517,241
5,597,960
5,651,869
5,741,438
5,868,337
5,981,636
6,111,751
6,222,812
6,366,139
6,366,139
6,408,414
6,428,910
6,432,923
1,044,973
GALLONS
LSl-RWs (GALLONS)
1,343,837
1,383,154
1,406,190
1,423,891
1,452,514
1,482,607
1,510,090
1,514,294
1,543,309
1,556,670
1,556,670
1,566,566
1,568,477
1,568,851
225,014
GALLONS
PWDR) (GALLONS)
7,724,977
7,825,435
7,882,912
7,939,181
7,999,585
8,092,581
8,165,750
8,264,184
8,378,468
8,496,736
8,496,736
8,520,178
8,537,090
8,540,402
815,425
GALLONS
SIS-RWs (GALLONS)
762,277
778,216
786,445
790,127
793,908
813,266
827,993
843,969
868,694
892,658
892,658
898,294
901,721
902,392
140,115
GALLONS
PHYTO DISCH. (GALLONS)
5,799,891
6,087,773
6,256,190
6,391,693
6,573,691
6,846,560
7,075,460
7,323,831
7,612,489
7,915,410
7,915,410
7,998,475
8,041,793
8,050,274
2,250,383
GALLONS
AIR STRIP. RUNTIME (HRS)
9,490
9,621
9,700
9,771
9,863
9,981
397
523
675
837
837
869
892
915
1,122
51.4%
LSl COMP RUN (HOURS)
10,470
10,600
10,690
10,760
10,860
10,980
11,080
11,210
11,360
11,530
11,530
11,530
11,530
11,530
1,060
HOURS
LSl COMP LOAD (HOURS)
1,020
1,051
1,069
1,079
1,095
1,120
1,137
1,151
1,169
1,198
1,198
1,198
1,198
1,198
178
HOURS
LS2 COMP RUN (HOURS)
10,500
10,620
10,690
10,740
10,830
10,930
11,010
11,080
11,220
11,370
11,370
11,400
11,421
11,426
926
HOURS
LS2 COMP LOAD (HOURS)
1,136
1,144
1,148
1,151
1,153
1,163
1,171
1,178
1,191
1,205
1,205
1,208
1,210
1,210
74
HOURS
ELECT. UPPER (kW-Hr)
9,797
9,829
9,860
9,898
9,956
10,020
10,086
10,171
10,261
10,349
10,428
10,506
10,519
10,521
724
KW-HR
WATER METER (CF)
410,121
410,475
410,715
410,753
410,796
411,004
411,082
411,278
411,393
411,644
411,862
412,080
412,116
412,123
7,786
GALLONS
BACKWASH PUMP (GAL.)
203,858
205,687
206,599
206,599
206,599
207,516
207,516
208,426
208,426
209,338
209,338
210,246
210,376
210,402
1,976
GALLONS
IRRIGATION ZONES (GALLONS):
ZONE 1
547,641
567,951
579,932
589,422
602,078
622,346
639,916
659,042
681,952
704,799
704,799
711,206
714,473
715,113
167,472
GALLONS
ZONE 2
513,761
533,441
545,056
554,429
566,768
587,066
604,428
623,165
645,249
667,410
667,410
673,741
676,910
677,531
163,770
GALLONS
ZONE 3
534,813
555,483
567,883
576,226
589,314
610,946
629,528
648,619
670,970
692,461
692,461
698,503
701,576
702,178
167,365
GALLONS
ZONE
525,054
543,451
554,500
563,191
574,465
592,553
608,671
625,693
645,317
664,704
664,704
669,144
671,916
672,459
147,405
GALLONS
ZONE 5
565,108
585,004
597,294
607,028
619,147
640,044
658,193
677,564
700,203
722,350
722,350
727,594
730,761
731,381
166,273
GALLONS
ZONE 6
563,410
583,449
595,226
605,974
617,497
638,989
657,616
676,970
700,448
723,086
723,086
728,533
731,770
732,404
168,994
GALLONS
ZONE 7
546,701
567,938
579,520
589,236
602,636
624,207
641,794
662,290
684,600
707,365
707,365
713,382
716,637
717,275
170,574
GALLONS
ZONE 8
578,222
599,256
611,049
621,238
635,450
657,047
675,335
696,667
720,529
744,218
744,218
750,565
753,953
754,616
176,394
GALLONS
ZONE 9
557,001
578,195
589,744
599,723
612,889
634,401
652,870
673,670
696,749
720,386
720,386
725,840
729,220
729,882
172,881
GALLONS
ZONE 10
591,590
613,331
625,497
635,938
649,480
671,844
691,170
712,917
735,441
759,790
759,790
766,411
769,893
770,575
178,985
GALLONS
ZONE 11
224,524
233,848
239,951
245,298
250,579
260,323
269,372
279,060
290,446
302,341
302,341
305,488
307,189
307,522
82,998
GALLONS
ZONE 12
459,442
479,868
491,343
500,841
513,577
534,129
552,110
571,985
594,359
616,484
616,484
622,704
625,868
626,487
167,045
IGALLONS
ZONE 13
387,845
407,923
415,011
424,212
436,097
453,590
464,904
477,081
490,976
505,747
505,747
508,981
511,093
511,507
123,662
GALLONS
ZONE 14
502,770
520,080
531,012
539,689
551,162
551,162
551,162
551,162
551,162
563,320
563,320
567,499
569,238
569,578
66,808
GALLONS
ZONE 15
283,514
283,514
290,735
290,735
290,735
290,735
290,735
290,735
290,735
290,735
290,735
291,675
291,675
291,675
8,161
GALLONS
DAILYAVERAGE
Average
Units
AVERAGE RUNTIME
78%
47%
42%
55%
70%
67%
75%
91%
96%
0%
19%
14%
3%
51%
%
AVERAGE FLOW (GPM)
28.6
16.7
13.4
18.1
27.1
22.7
24.6
28.6
30.1
0.0
8.2
4.3
0.8
17.2
GPM
EFF. DISCH. (GALLONS)
41,126
24,060
19,358
26,000
38,981
32,700
35,482
41,237
43,274
11,866
6,188
1,212
24,729
GPD
TOTAL INFLUENT (GALLONS)
40,715
24,209
18,794
26,054
38,478
32,668
35,533
39,869
42,703
11,607
6,107
1,196
24,456
GPD
INF. LEACHATE (GALLONS)
18,470
11,531
7,701
12,796
18,128
16,186
18,588
15,866
20,475
6,039
2,928
573
11,483
GPD
INF. LS1-RWs (GALLONS)
5,617
3,291
2,529
4,089
4,299
3,926
601
4,145
1,909
1,414
273
53
2,473
GPD
INF. PWDR) (GALLONS)
14,351
8,211
8,038
8,629
13,285
10,453
14,062
16,326
16,895
3,349
2,416
473
8,961
GPD
INF. SIS-RWs(GALLONS)
2,277
1,176
526
540
2,765
2,104
2,282
3,532
3,423
805
490
96
1,540
GPD
WEEKLY RUNTIME (DAYS)
5.5
3.3
2.9
3.9
4.9
4.7
5.2
6.3
6.7
1.4
1.0
0.2
3.5
DAYS/WK
LSl COMP RUN (HOURS)
18.6
12.9
10.0
14.3
17.1
14.3
18.6
21.4
24.3
3.5
0.7
12.0
HRS/DAY
LSl COMP LOAD (HOURS)
4.4
2.6
1.4
2.3
3.6
2.4
2.0
2.6
4.1
0.6
0.1
2.0
HRS/DAY
LS2 COMP RUN (HOURS)
17.1
10.0
7.1
12.9
14.3
11.4
10.0
20.0
21.4
4.3
3.1
0.6
10.2
HRS/DAY
LS2 COMP LOAD (HOURS)
1.1
0.6
0.4
0.3
1.4
1.1
1.0
1.9
2.0
0.4
0.3
0.1
0.8
HRS/DAY
ELECTRICITY(kW-Hr)
4.6
4.4
5.4
8.3
9.1
9.4
12.1
12.9
12.6
11.2
11.2
1.8
0.4
8.0
kW-HR/DAY
CITY WATER (GALLONS)
50.6
34.3
5.4
6.1
30
11
28
16
36
31
31
5
1
22
GPD
BACKWASH PUMP (GAL.)
261.3
130.3
131
130
130
130
19
4
72
GPD
EFFLUENT LABS
Fe (mg/L)
0.93
0.63
5.26
1.07
0.45
1.42
2.76
2.05
1.8
1.7
1.59
1.9
mg/L
pH
6.5
6.45
6.49
7.1
6.96
6.75
6.72
7.01
6.9
6.53
7.07
6.8
m/L
ORP
179
60
174
125
57
67
49
104
55
63
78
83
mV
COND
1,109
1,142
1162
1288
1251
1114
1220
1,177
1,061
1,122
1,262
1,180
us/cm
TDS (mg/L)
771.2
789.6
815.6
913.6
883.6
780.7
861.2
832
745
788
895
830
mg/L
TSS (mg/L)
11
6
16
0
0
6
23
7
14
7.2
mg/L
COD (mg/L)
68
78
78
90
79
69
107
85
68
79
116
85
mg/L
WELL LEVELS
Average
Change
OWDR-4
682.16
676.19
678.91
677.20
677.54
678.38
680.83
676.64
677.34
677.12
678.27
677.8
(7.08)
OWDR-2
681.90
675.83
678.51
676.92
677.21
678.08
680.56
676.28
677.01
676.77
678.04
677.5
(9.25)
PWDR-1
689.23
658.87
658.72
662.72
662.57
661.72
669.02
657.79
659.28
658.98
660.83
661.1
(33.70)
OWDR-3
681.80
681.67
682.02
681.72
682.70
682.83
682.83
683.30
682.4
(0.54)
PW-6D (696.79)
680.37
#DIV/Ol
OWLFS-2
680.00
#DIV/Ol
PW-16D
680.52
678.86
680.67
679.8
(3.69)
PW-15D
683.12
681.80
683.62
682.7
ESTIMATED LAKE LEVEL
682.3
682.3
682.3
682.3
682.3
682.7
685.0
682.4
682.4
682.3
682.4
683.0
682.50
682.55
682.6
SOURCE WATER
PWDR-1
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
no
YES
YES
no
LEACHATE(LCHT)
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
no
YES
YES
no
LS-1 RECOVERY WELLS
YES
YESI
YESI
YES
YESI
YESI
YESI
YES
YES
YES
no
YES
YES
no
SIS RECOVERY WELLS
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
no
YES
YESI
no

50000
45000
40000
35000
z
0
Q 30000
O 25000
LL
Q
o
W
c7 20000
W
G
15000
10000
5000
0
SEABOARD Q4 2018
8
7
6
5
—■ INF. LEACHATE (GALLONS)
4 —4 INF. LS1-RWs (GALLONS)
INF. PWDR1 (GALLONS)
--)*--INF. SIS-RWs (GALLONS)
3 EFF. DISCH. (GALLONS)
WEEKLY RUNTIME (DAYS)
1
0
All
EL
1 2 3 4 5 6 7 8 9 10 11 12 13 14
WEEK

695.00
685.00
680.00
J
W
W
J
J
J
W
3: 675.00
670.00
665.00
SEABOARD Q4 2018
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

25
20
5
I
SEABOARD Q4 2018
1 2 3 4 5 6 7 8 9 10 11 12 13
WEEK
1,400
1,200
1,000
O—Fe
(mg/L)
800 U
o
pH
p
TSS (mg/L)
Z
U
ORP
600 a
--)K--COND
tTDS (mg/L)
COD (mg/L)
400
w

25.0
kn 20.0
W
a
c�
W
a
0 15.0
cr
O
Ln
IA
W
a
all
SEABOARD Q4 2018
1 2 3 4 5 6 7 8 9 10 11 12 13
WEEK
14.0
12.0
10.0 U7
a
W
a
J
8.0 0
LS1 COMP RUN (HOURS)
z
O
LS1 COMP LOAD (HOURS)
i=
a
LS2 COMP RUN (HOURS)
6.0 N
z
--X— LS2 COMP LOAD (HOURS)
oc
--)K- ELECTRICITY (kW-Hr)
W
4.0 a
PAII,

Water Treatment System
Dioxane
Chlorinated
ethenes
Chlorinated
ethanes
Other
organics
Total
Mass
kg
kg
kg
kg
k
Step 1
Influent
5.9
15.3
7.7
8.8
37.7
Mechanical
Effluent
6.7
0.23
0.12
0.31
7.36
Treatment
System
% Contaminant Removal
<
98.5
98.4
96.5
80.5
Irrigation water
9
9
9
9
9
6,700
230
120
310
7,360
Drainage water*
410
ND
ND
ND
410
Lys 2 (vol. scaling factor, 232)
Lys 7 (vol. scaling factor, 244)
685
ND
ND
ND
685
Step 2
Lys 8 (vol. scaling factor, 332)
37
ND
ND
ND
37
Phyto ation
Lys 10 (vol. scalingfactor,306)
498
ND
ND
ND
498
Syystemstem
Lys 11B (vol. scaling factor, 675)
2,303
ND
ND
ND
2,303
Lys 12 (vol. scaling factor, 155)
651
ND
ND
ND
651
Lys 13 (vol. scaling factor, 242)
2,929
ND
ND
15.2
2,944
Averse (n=7)
1,073
ND
ND
2.2
1,075
Step 2
% Contaminant Removal
84.0%
100%
100%
99.3%
85.3%
Overall Percent Contaminant Removal
81.8%
100%
100%
99.97%
97.1%