4101_Guilford_HighPoint_MSWLF_Seaboard_RemedialProgressReport_FID1747346_20221114

SEABOARD GROUP II AND THE CITY OF HIGH POINT
November 9, 2022
Eric B. Aufderhaar, P.G., Environmental Program Consultant
North Carolina Department of Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Re: Remedial Action Progress Report, 2022 Third Quarter
Former Seaboard Chemical and Riverdale Drive Landfill Site
Jamestown, Guilford County, North Carolina
Dear Mr. Aufderhaar:
The Seaboard Group II and the City of High Point are providing this 2022 Third Quarter
Remedial Action Progress Report for the former Seaboard Chemical Corporation facility and the
closed Riverdale Drive Landfill located in Jamestown, NC.
During the third quarter of 2022 the mechanical and phytoremediation treatment systems
processed 3,571,324 gallons of extracted groundwater and leachate. Also during the third
quarter of 2022 the following shutdowns exceeding one day in duration occurred:
Date
Duration
Reason for Shutdown
July 4, 2022
1.25 days
Automatic — High pressure in bag filter
July 16, 2022
1.5 days
Automatic — Power failure
August 6, 2022
1.5 days
Automatic — High level in tank T-703
August 16, 2022
15.0 days
Manual — Citric wash, clarifier/tipper box repairs
As noted above, the system was shut down for two weeks in mid -August for a complete citric
wash of the entire treatment system. During the shutdown maintenance and repairs were made to
the clarifier system and the sludge -drying tipper boxes. Since resumption of operations, no shut
downs have occurred.
The first quarterly sampling for the TM -I I Extraction System Evaluation Monitoring was
conducted the last week of September 2022. The results of this monitoring will be provided with
the 2022 Fourth Quarter Remedial Action Progress Report or earlier.
The clearing and site preparation work for the irrigation line replacement has begun with an
estimated completion date of the first quarter of 2023.

The attached figures provide the results of the full scale operation of the treatment system during
the third quarter of 2022, including: Operating Data, Process Flow Data, Static Water Level
Data, System Chemistry, Utility Use Data, and Contaminant Mass Removal.
Please contact Mr. Gary D. Babb (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.
Babb & Associates, P.A.
cc: Dave Nutt - Seaboard Trustee
Bruce Braswell — Seaboard Trustee
Jeff Hayward, Seaboard Trustee
Jim Schenker, Technical Committee Oversight
Craig Coslett — Project Oversight Coordinator
Robby Stone - City of High Point Trustee
Amos Dawson, Seaboard Group II Counsel
Bruce Ashley, City of High Point Counsel
Jackie Drummond - NCDEQ Division of Solid Waste

SEABOARD GROUP II & THE CITY OF HIGH POINT
Quarterly
Units of
QUARTERLY LOG -Q32022
INITIAL
WEEK
WEEK
WEEK
WEEK4
WEEKS
WEEK
WEEK
WEEK
WEEK
WEEK 10
WEEK 11
WEEK 12
WEEK 13
Totals
Measure
METER READING
LEACHATE (GALLONS)
4,212,611
4,279,579
4,333,396
4,376,029
4,439,320
4,495,854
4,547,904
4,611,892
4,621,238
4,621,238
4,698,030
4,803,155
4,918,599
5,027,992
815,381
GALLONS
LSl-RWs(GALLONS)
2,051,047
2,197,303
2,307,933
2,397,840
2,535,648
2,667,721
2,774,807
2,918,251
2,933,229
2,933,229
3,056,786
3,178,994
3,317,731
3,447,777
1,396,730
GALLONS
PWDR1(GALLONS)
3,774,338
3,836,397
3,887,974
3,931,838
3,993,036
4,049,946
4,095,953
4,154,066
4,163,075
4,163,075
54,916
111,887
178,103
244,129
632,866
GALLONS
SIS-RWs(GALLONS)
4,792,133
4,847,735
4,901,123
4,947,810
5,018,774
5,086,691
5,133,219
5,196,769
5,206,645
5,206,645
5,260,980
5,316,920
5,381,262
5,437,996
645,863
GALLONS
PHYTO DISCH. (GALLONS)
5,465,204
5,799,099
6,083,410
6,314,288
6,653,404
6,978,082
7,234,391
7,568,375
7,615,193
7,615,193
7,935,020
8,281,220
8,669,738
9,036,528
3,571,324
GALLONS
AIR STRIP. RUNTIME (HRS)
21,359
21,527
21,666
21,786
21,951
22,112
22,243
22,407
22,435
22,435
22,576
22,719
22,887
23,055
1696 (77.7%)
HOURS
LSl COMP RUN (HOURS)
25,210
25,370
25,510
25,630
25,800
25,960
26,090
26,260
26,290
26,290
26,430
26,570
26,740
26,910
1,700
HOURS
LSl COMP LOAD (HOURS)
11,560
11,650
11,710
11,770
11,850
11,920
12,000
12,080
12,100
12,100
12,170
12,260
12,360
12,450
890
HOURS
LS2 COMP RUN (HOURS)
34,370
34,540
34,680
34,800
34,960
35,130
35,260
35,420
35,460
35,460
35,620
35,760
35,930
36,100
1,730
HOURS
LS2 COMP LOAD (HOURS)
4,214
4,260
4,300
4,334
4,371
4,413
4,445
4,494
4,505
4,505
4,554
4,586
4,704
4,856
642
HOURS
ELECT. UPPER (kW-Hr)
7,251
7,304
7,349
7,390
7,440
7,487
7,527
7,576
7,600
7,600
7,662
7,705
7,757
7,811
560
KW-HR
WATER METER (CF)
518,702
519,649
521,110
521,725
522,602
523,477
524,270
525,480
526,285
526,285
528,378
529,474
530,951
532,673
104,503
GALLONS
BACKWASH PUMP (GAL.)
751,961
756,552
767,550
771,213
776,698
782,177
786,724
794,918
796,735
796,735
801,328
808,687
818,808
830,769
78,808
GALLONS
IRRIGATION ZONES (GALLONS):
ZONE 1
1,781,249
1,799,976
1,816,715
1,828,956
1,847,588
1,865,395
1,878,919
1,897,133
1,899,451
1,899,451
1,917,180
1,934,548
1,954,930
1,973,885
192,636
GALLONS
ZONE 2
1,702,606
1,722,645
1,740,120
1,753,232
1,772,756
1,791,442
1,806,326
1,825,432
1,828,230
1,828,230
1,846,612
1,865,120
1,886,704
1,906,788
204,182
GALLONS
ZONE 3
2,120,065
2,144,546
2,165,444
2,180,476
2,203,780
2,226,086
2,243,753
2,266,408
2,269,415
2,269,415
2,292,185
2,315,124
2,342,259
2,367,470
247,405
GALLONS
ZONE
1,699,589
1,718,135
1,734,101
1,745,818
1,763,699
1,780,724
1,794,000
1,811,287
1,813,585
1,813,585
1,831,140
1,848,904
1,869,429
1,889,004
189,415
GALLONS
ZONE 5
2,003,409
2,027,347
2,047,886
2,062,713
2,085,808
2,107,277
2,124,602
2,146,641
2,150,062
2,150,062
2,169,930
2,189,971
2,213,482
2,235,869
232,460
GALLONS
ZONE 6
2,132,456
2,157,197
2,178,747
2,194,888
2,218,874
2,240,837
2,258,720
2,281,730
2,284,914
2,284,914
2,308,072
2,331,178
2,357,851
2,383,202
250,746
GALLONS
ZONE 7
2,053,502
2,079,567
2,101,867
2,118,623
2,143,562
2,166,827
2,185,865
2,210,440
2,213,478
2,213,478
2,237,917
2,261,834
2,289,984
2,316,812
263,310
GALLONS
ZONE 8
2,118,745
2,145,605
2,169,287
2,187,001
2,212,868
2,238,051
2,258,233
2,283,670
2,286,920
2,286,920
2,313,164
2,338,427
2,369,887
2,398,852
280,107
GALLONS
ZONE 9
1,354,156
1,354,158
1,354,156
1,367,534
1,392,874
1,417,425
1,437,069
1,462,147
1,465,540
1,465,540
1,465,540
1,485,732
1,510,195
1,532,859
178,703
GALLONS
ZONE 10
1,265,929
1,265,929
1,265,929
1,265,929
1,265,929
1,265,929
1,265,929
1,265,929
1,265,929
1,265,929
1,265,929
1,286,319
1,290,631
1,290,631
24,702
GALLONS
ZONE 11
912,130
927,851
941,216
951,505
966,504
980,443
989,985
1,002,035
1,003,573
1,003,573
1,018,117
1,031,953
1,048,141
1,062,760
150,630
GALLONS
ZONE 12
2,164,421
2,189,646
2,211,588
2,228,583
2,254,095
2,277,494
2,296,267
2,321,415
2,324,239
2,324,239
2,357,126
2,381,851
2,402,613
2,429,657
265,236
GALLONS
ZONE 13
1,760,085
1,783,807
1,803,299
1,818,483
1,840,425
1,860,761
1,876,616
1,898,297
1,900,848
1,900,848
1,922,337
1,943,018
1,968,101
1,991,254
231,169
GALLONS
ZONE 14
1,640,764
1,658,017
1,672,437
1,683,287
1,699,778
1,715,691
1,728,393
1,744,634
1,746,830
1,746,830
1,762,692
1,778,187
1,796,689
1,818,974
178,210
GALLONS
ZONE 15
2,059,094
2,084,806
2,106,392
2,122,425
2,146,793
2,170,221
2,188,323
2,212,059
2,215,786
2,215,786
2,237,972
2,259,718
2,285,711
2,309,293
250,199
GALLONS
ZONE 16
1,846,165
1,867,389
1,886,025
1,899,208
1,919,963
1,940,103
1,955,829
1,975,579
1,978,743
1,978,743
1,995,875
2,012,197
2,030,723
2,048,443
202,278
GALLONS
DAILYAVERAGE
Average
Units
AVERAGE RUNTIME
88%
97%
71%
98%
96%
78%
98%
17%
0%
73%
99%
100%
100%
78%
Percent
AVERAGE FLOW (GPM)
29.0
32.9
22.9
33.6
32.2
25.4
33.1
4.6
0.0
27.8
40.1
38.5
36.4
27.4
GPM
EFF. DISCH. (GALLONS)
41,737
47,385
32,983
48,445
46,383
36,616
47,712
6,688
39,978
57,700
55,503
52,399
39,502
GPD
TOTAL INFLUENT (GALLONS)
41,361
44,902
31,870
47,609
44,776
35,953
47,014
6,173
38,700
56,707
54,963
51,743
38,598
GPD
INF. LEACHATE (GALLONS)
8,371
8,970
6,090
9,042
8,076
7,436
9,141
1,335
9,599
17,521
16,492
15,628
9,054
GPD
INF. LS1-RWs (GALLONS)
18,282
18,438
12,844
19,687
18,868
15,298
20,492
2,140
15,445
20,368
19,820
18,578
15,405
GPD
INF. PWDR) (GALLONS)
7,757
8,596
6,266
8,743
8,130
6,572
8,302
1,287
6,865
9,495
9,459
9,432
6,993
GPD
INF. SIS-RWs (GALLONS)
6,950
8,898
6,670
10,138
9,702
6,647
9,079
1,411
6,792
9,323
9,192
8,105
7,147
GPD
WEEKLY RUNTIME (DAYS)
6.1
6.8
5.0
6.9
6.7
5.5
6.8
1.2
5.1
7.0
7.0
7.0
5.5
DAYS/WK
LSl COMP RUN (HOURS)
20.0
23.3
17.1
24.3
22.9
18.6
24.3
4.3
17.5
23.3
24.3
24.3
18.8
HRS/DAY
LSl COMP LOAD (HOURS)
11.3
10.0
8.6
11.4
10.0
11.4
11.4
2.9
8.8
15.0
14.3
12.9
9.8
HRS/DAY
LS2 COMP RUN (HOURS)
21.3
23.3
17.1
22.9
24.3
18.6
22.9
5.7
20.0
23.3
24.3
24.3
19.1
HRS/DAY
LS2 COMP LOAD (HOURS)
5.8
6.7
4.9
5.3
6.0
4.6
7.0
1.6
6.1
5.3
16.9
21.7
7.1
HRS/DAY
ELECTRICITY(kW-Hr)
6.6
7.5
5.9
7.1
6.7
5.7
7.0
3.4
7.8
7.2
7.4
7.7
6.2
kW-HR/DAY
CITY WATER (GALLONS)
118.4
243.5
87.9
125.3
125
113
173
115
262
183
211
246
1,152
GPD
BACKWASH PUMP (GAL.)
573.9
1,833.0
523.3
783.6
783
650
1,171
260
574
1,227
1,446
1,709
887
GPD
EFFLUENT LABS
Fe
0.68
0.47
1.43
1.26
0.22
0.4
0
0.36
0.3
0.3
0.11
0.27
0.02
0.06
0.4
mg/L
pH
6.27
6.02
6.28
6.29
6.11
6.03
6.04
6
6
6
6
6
6
6
6.3
m/L
ORP
260
257
176
150
258
264
181
214
210
210
229
239
249
254
222.4
mV
COND
1316
1381
1276
1189
1181
1160
1175
1252
1245
1245
1124
1126
1195
1211
1212.3
uS/cm
TDS (mg/L)
922
965.9
892.4
822.1
803.5
813.7
877.2
878.1
878.1
783.1
785.3
839.1
853
849.3
mg/L
TSS (mg/L)
5
3
3
31
0
0
17
1
1
1
1
2
0
0
4.6
mg/L
WELL LEVELS
Elevation
Change
OWDR-4
682.16
681.40
678.99
679.98
679.41
681.72
680.07
679.40
679.42
678.65
679.02
678.83
678.62
679.6
(2.53)
OWDR-2
681.90
681.69
679.13
680.16
679.55
681.98
680.25
679.55
679.58
678.76
679.14
678.94
678.73
679.8
(2.11)
PWDR-1
689.23
681.99
658.64
658.88
658.70
681.59
658.51
658.67
658.70
648.70
648.62
648.65
648.73
659.2
(30.03)
OWDR-3
681.80
PW-6D (696.79)
680.37
OWLFS-2
680.00
662.80
664.45
664.49
664.50
664.52
664.40
664.28
664.47
664.50
664.3
(15.73)
PW-16D
680.52
PW-15D
683.12
ESTIMATED LAKE LEVEL
682.55
681.0
681.0
681.5
681.5
680.0
680.5
681.2
680.9
681.5
681.25
681.00
681.0
(1.52)
SOURCE WATER
PWDR-1
YES
YES
YES
YES
YES
NO
YES
YES
YES
No
YES
YES
YES
YES
LEACHATE(LCHT)
YES
YES
YES
YES
YES
YES
YES
YES
YES
No
YES
YES
YES
YES
LS-1 RECOVERY WELLS
YES
YES
YES
YES
YES
YES
YES
YES
YES
No
YES
YES
YES
YES
SIS RECOVERY WELLS
YES
YES
YES
YES
YES
YES
YES
YES
YES
No
YES
YES
YES
YES

70000
50000
LA
z
O
J
J
Q
40000
O
J
LL
}
J_
Q
30000
W
a
w
a
20000
10000
n
SEABOARD Q3 2022
0 1 2 3 4 5 6 7 8 9 10 11 12 13
WEEK
8
7
5
INF. LEACHATE (GALLONS)
INF. LS1-RWs (GALLONS)
4
—*--INF. PWDR1 (GALLONS)
—*- INF. SIS-RWs (GALLONS)
3 —W- EFF. DISCH. (GALLONS)
WEEKLY RUNTIME (DAYS)
2
1
w

695.00
J
W
J 675.00
J
J
W
I-10 1111
665.00
655.00
SEABOARD Q3 2022
0 1 2 3 4 5 6 7 8 9 10 11 12 13
WEEK
OWDR-4
OWDR-2
PWDR-1
OWDR-3
PW-6D (696.79)
tOWLFS-2
tPW-16D
DPW-15D
ESTIMATED LAKE LEVEL

SEABOARD Q3 2022
Or'
1,600
1,400
1,200
1,000
p
Fe (mg/L)
z
pH
800 O
k
--�--TSS (mg/L)
a
0
—0—ORP
600
--W— CO N D
fTDS (mg/L)
400
WE

SEABOARD Q3 2022
IM
7.0
W
a
6.0 w
a
J_
a
5.0
-4--LS1 COMP RUN (HOURS)
z
O
fLS1 COMP LOAD (HOURS)
a
4.0
fLS2 COMP RUN (HOURS)
z
LS2 COMP LOAD (HOURS)
O
ELECTRICITY (kW-Hr)
3.0 �
O
a
WE
1.0

Water Treatment System
Dioxane
Chlorinated
ethenes
Chlorinated
ethanes
Other
organics
Total
Mass
kg
kg
kg
kg
kg
Step 1
Mechanical Treatment
System
Influent 1
20.3
132.5
68.2
72.0
293.0
Effluent 1
18.9
0.5
0.4
2.9
22.7
% Contaminant
Removal
6.7
99.6
99.4
96.0
92.3
Ste 2
p
Phyto-remediation
System
Irrigation water
g
g
g
g
g
18,900.0
483.8
425.3
2,875.5
22,684.5
Drainage water
VSF
940.5
ND
ND
27.0
967.6
Lys 2
17.5
Lys 4
18.9
185.8
ND
ND
480.3
666.1
Lys 7
13.6
21.7
ND
ND
2.1
23.8
Lys 8
12.8
3.7
ND
ND
ND
3.7
Lys 9
20.1
7.8
ND
ND
ND
7.8
Lys 10
148.8
1,187.8
ND
ND
5,563.8
6,751.6
Lys 11A
36.5
65.7
ND
ND
ND
65.7
Lys 1113
67.0
700.3
ND
ND
203.7
904.0
Lys 12E
13.5
--
--
--
--
--
Lys 12W
13.5
40.6
ND
ND
ND
40.6
Lys 13E
15.5
data not used in calculations
Lys 13W
15.5
32.8
ND
ND
ND
32.8
Lys 14
20.1
35.9
ND
ND
ND
35.9
Lys 15W
14.3
--
--
--
--
--
Lys 16
17.7
15.0
ND
ND
228.5
243.5
Average (n =14)
231.3
ND
ND
464.7
695.9
Step 2
Contaminant
Removal
98.8
100
100
83.8
96.9
Overall Percent Contaminant Removal
98.9
100
100
99.4
99.8
' 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 effleuent
mass are essentially equal.