4101_Guilford_HighPoint_MSWLF_Seaboard_RemedialProgressReport_FID1442792_20200814

SEABOARD GROUP II AND THE CITY OF HIGH POINT
August 14, 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, 2020 Second 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 are providing this 2020 Second Quarter
Remedial Action Progress Report for the former Seaboard Chemical Corporation facility and the
closed Riverdale Drive Landfill located in Jamestown, NC.
During the second quarter of 2020 the mechanical and phytoremediation treatment systems
processed 4,528,227 gallons of extracted groundwater and leachate. Also during the second
quarter of 2020 the following shutdown exceeding one day in duration occurred:
Date
Duration
I Reason for Shutdown
�M�a9, 2020
2.25
1 Filter Building Compressor Failure
As noted in the last quarterly report, the new PLC/HMI control update has provided for a more
stable treatment system operation. During the second quarter of 2020, only one significant
shutdown occurred, as described above. The treatment system operated at a 94.5% runtime and
the overall contaminant removal efficiency was calculated to be 99.3%.

The attached figures provide the results of the full scale operation of the treatment system during
the first quarter of 2020, including: Operating Data, Process Flow Data, Static Water Level Data,
System Chemistry, Utility Use Data, and 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
ccoslett@demaximis. com.
Respectfully,
Seaboard Group II and City of High Point
-"'I '4�7 za--
Gary D. Babb, P.G.
Babb & Associates, P.A.
cc: Dave Nutt, Esq. - Seaboard Trustee
Steve Anastos - Seaboard Trustee
Jim Schenker, Technical Committee Oversight
Craig Coslett - Project Oversight Coordinator
Terry Houk - City of High Point Trustee
Amos Dawson, Seaboard Group II Counsel
Hayes Finley, 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 -Q22020
INITIAL
WEEK
WEEK
WEEK
WEEK4
WEEK
WEEK
WEEK
WEEK
WEEK
WEEK 10
WEEK 11
WEEK 12
WEEK 13
Totals
Measure
METER READING
:14
e
LEACHATE (GALLONS)
2,613,015
2,737,069
2,861,966
2,986,348
3,093,864
3,229,749
3,305,522
3,416,615
3,585,601
3,713,592
3,846,667
3,954,548
4,074,620
4,180,641
1,567,626
GALLONS
LSl-RWs (GALLONS)
3,716,779
3,791,634
3,870,359
3,947,602
4,018,638
4,086,330
4,132,064
4,202,439
4,279,708
4,338,708
4,421,278
4,489,361
4,557,833
4,623,901
907,122
GALLONS
PWDR1(GALLONS)
13,837,338
13,982,634
14,136,726
14,288,915
14,438,186
14,584,015
14,676,233
14,801,183
14,943,329
15,052,080
15,175,349
15,288,450
15,406,456
15,522,446
1,685,108
GALLONS
SIS-RWs (GALLONS)
1,878,905
1,900,786
1,920,576
1,941,886
1,961,227
1,983,516
1,998,000
2,019,839
2,051,763
2,078,025
2,103,413
2,127,082
2,152,799
2,176,621
297,716
GALLONS
PHYTO DISCH. (GALLONS)
12,639,870
13,003,548
13,376,847
13,751,712
14,107,369
14,488,903
14,721,080
15,049,653
15,482,150
15,811,450
16,182,368
16,504,367
16,850,270
17,168,097
4,528,227
GALLONS
AIR STRIP. RUNTIME (HRS)
7,123
7,276
7,443
7,610
7,779
7,946
8,054
8,211
8,389
8,532
8,699
8,853
9,018
9,186
2063 (94.5%)
HOURS
LSl COMP RUN (HOURS)
7,601
7,753
7,919
8,087
8,255
8,423
8,530
8,688
8,867
9,010
9,177
9,332
9,498
9,666
2,065
HOURS
LSl COMP LOAD (HOURS)
4,331
4,391
4,455
4,517
4,576
4,641
4,681
4,740
4,812
4,867
4,939
5,002
5,069
5,133
802
HOURS
LS2 COMP RUN (HOURS)
17,750
17,890
18,050
18,200
18,360
18,520
18,620
18,770
18,940
19,080
19,240
19,400
19,560
19,720
1,970
HOURS
LS2 COMP LOAD (HOURS)
1,846
1,863
1,880
1,898
1,914
1,932
1,944
1,961
1,984
2,004
2,031
2,056
2,077
2,097
251
HOURS
ELECT. UPPER (kW-Hr)
831
884
929
982
1,027
1,073
1,119
1,160
1,206
1,239
1,279
1,321
1,362
1,401
570
KW-HR
WATER METER (CF)
435,186
435,900
436,840
437,422
438,155
439,187
440,020
440,712
441,973
443,049
444,010
445,073
446,286
448,173
97,143
GALLONS
BACKWASH PUMP (GAL.)
281,133
285,689
292,075
295,721
300,271
306,646
312,108
316,659
324,860
332,160
338,551
345,864
354,089
359,571
78,438
GALLONS
IRRIGATION ZONES (GALLONS):
ZONE 1
305,596
329,453
353,063
376,568
398,331
421,530
435,541
455,135
480,822
500,459
522,396
541,898
562,923
582,059
276,463
GALLONS
ZONE 2
322,112
345,440
369,957
393,994
416,677
441,052
455,745
476,514
503,809
524,958
548,288
568,870
590,986
616,248
294,136
GALLONS
ZONE 3
326,786
350,939
375,626
400,205
423,303
448,223
463,351
484,443
512,425
533,767
557,745
578,776
601,193
620,687
293,901
GALLONS
ZONE
273,808
294,696
316,589
338,205
358,347
379,733
392,498
410,542
433,615
451,765
472,329
490,659
510,051
527,494
253,686
GALLONS
ZONE 5
319,130
342,666
366,500
389,897
411,799
435,221
449,652
469,141
495,300
515,658
538,187
557,886
578,927
597,823
278,693
GALLONS
ZONE 6
324,951
349,092
373,910
389,528
421,272
445,829
460,570
481,854
509,568
531,061
554,761
575,500
597,784
617,532
292,581
GALLONS
ZONE 7
333,541
358,144
382,770
408,073
431,060
456,057
471,657
493,225
521,218
543,201
567,700
589,263
612,094
635,662
302,121
GALLONS
ZONE 8
332,293
356,428
381,198
405,820
428,931
454,355
470,418
492,778
521,623
544,166
568,933
590,875
614,035
634,187
301,894
GALLONS
ZONE 9
332,580
357,247
382,714
408,391
432,200
457,804
473,897
497,633
528,015
550,030
574,227
595,925
618,476
638,504
305,924
GALLONS
ZONE 10
338,079
362,730
387,682
412,687
435,983
462,221
478,239
500,829
529,810
552,214
577,265
599,154
622,790
643,533
305,454
GALLONS
ZONE 11
179,701
192,631
206,585
220,564
235,377
249,166
257,385
268,682
285,900
297,192
310,091
321,669
333,324
344,649
164,948
GALLONS
ZONE 12
324,063
347,525
371,600
396,010
420,280
445,740
460,905
482,792
511,256
533,162
558,000
579,502
602,863
623,380
299,317
GALLONS
ZONE 13
300,182
322,751
346,118
369,580
393,009
416,903
431,263
451,988
478,690
499,070
522,843
542,497
563,889
581,173
280,991
GALLONS
ZONE 14
292,079
313,882
336,343
358,770
380,411
403,452
417,218
436,954
462,456
481,885
504,595
522,472
542,212
560,897
268,818
GALLONS
ZONE 15
305,403
328,185
352,169
376,268
399,056
423,402
438,070
458,728
486,284
507,378
530,761
551,809
574,265
594,192
288,789
GALLONS
Zone 16
272,990
295,558
319,118
342,444
364,619
388,485
402,839
423,007
449,889
470,314
493,851
513,900
535,366
554,067
281,077
GALLONS
DAILYAVERAGE
Average
Units
AVERAGE RUNTIME
91%
99%
99%
101%
99%
64%
93%
93%
99%
99%
92%
98%
100%
95%
Percent
AVERAGE FLOW (GPM)
36.1
37.0
37.2
35.3
37.9
23.0
32.6
37.5
38.1
36.8
31.9
34.3
31.5
34.6
GPM
EFF. DISCH. (GALLONS)
51,954
53,328
53,552
50,808
54,505
33,168
46,939
54,062
54,883
52,988
46,000
49,415
45,404
49,770
GPD
TOTAL INFLUENT (GALLONS)
52,298
53,929
53,589
49,595
53,099
32,601
46,894
52,541
53,667
52,043
44,676
47,467
44,557
48,997
GPD
INF. LEACHATE (GALLONS)
17,722
17,842
17,769
15,359
19,412
10,825
15,870
21,123
21,332
19,011
15,412
17,153
15,146
17,229
GPD
INF. LS1-RWs (GALLONS)
10,694
11,246
11,035
10,148
9,670
6,533
10,054
9,659
9,833
11,796
9,726
9,782
9,438
9,970
GPD
INF. PWDR) (GALLONS)
20,757
22,013
21,741
21,324
20,833
13,174
17,850
17,768
18,125
17,610
16,157
16,858
16,570
18,522
GPD
INF. SIS-RWs (GALLONS)
3,126
2,827
3,044
2,763
3,184
2,069
3,120
3,991
4,377
3,627
3,381
3,674
3,403
3,276
GPD
WEEKLY RUNTIME (DAYS)
6.4
7.0
7.0
7.0
7.0
4.5
6.5
7.4
6.0
7.0
6.4
6.9
7.0
6.6
DAYS/WK
LSl COMP RUN (HOURS)
21.7
23.7
24.0
24.0
24.0
15.3
22.6
22.4
23.8
23.9
22.1
23.7
24.0
22.7
HRS/DAY
LSl COMP LOAD (HOURS)
8.6
9.1
8.9
8.4
9.3
5.7
8.4
9.0
9.2
10.3
9.0
9.6
9.1
8.8
HRS/DAY
LS2 COMP RUN (HOURS)
20.0
22.9
21.4
22.9
22.9
14.3
21.4
21.3
23.3
22.9
22.9
22.9
22.9
21.7
HRS/DAY
LS2 COMP LOAD (HOURS)
2.4
2.4
2.6
2.3
2.6
1.7
2.4
2.9
3.3
3.9
3.6
3.0
2.9
2.8
HRS/DAY
ELECTRICITY(kW-Hr)
7.6
6.4
7.6
6.4
6.6
6.6
5.9
5.8
5.5
5.7
6.0
5.9
5.6
6.3
kW-HR/DAY
CITY WATER (GALLONS)
102.0
134.3
83.1
104.7
147
119
99
158
179
137
152
173
270
1,069
GPD
BACKWASH PUMP (GAL.)
650.9
912.3
520.9
650.0
911
780
650
1,025
1,217
913
1,045
1,175
783
864
GPD
EFFLUENT LABS
Fe (mg/L)
0.92
0.69
0.70
0.76
1.2
0.66
3
0.85
1.1
1.5
0.75
0.91
0.58
0.08
1.0
mg/L
pH
6.2
6.12
6.09
6.49
6.8
6.83
6.81
6.58
6.6
7.00
6.59
7.02
6.94
6.78
6.7
m/L
ORP
164
150
97
61
70
69
66
79
93
86
88
174
36
57
87
mV
COND
1,282
1,235
1264
1265
1057
1169
1238
1,426
1,039
1,123
1,167
1,161
1,156
1,183
1,191
us/cm
TDS (mg/L)
905.6
872
891.5
896
743.8
820.8
875.7
1,008
725
788
814
810
805
824
836
mg/L
TSS (mg/L)
10
4
5
3
13
6
36
13
8
7
4
18
3
9.2
mg/L
COD (mg/L)
129
70
64
85
74
73
118
97
98
63
77
74
91
72
81
mg/L
WELL LEVELS
Average
Change
O W DR-4
682.16
OWDR-2
681.90
673.09
673.77
673.51
673.90
674.15
678.01
674.98
676.50
676.34
676.16
676.01
676.50
676.47
675.3
(6.56)
PWDR-1
689.23
658.70
658.70
658.71
658.71
658.72
658.71
658.70
658.70
658.69
658.70
658.71
658.71
658.72
658.7
(30.52)
OWDR-3
681.80
(681.80)
PW-6D (696.79)
680.37
OWLFS-2
680.00
PW-16D
680.52
PW-15D
683.12
680.90
681.36
681.04
681.03
681.24
683.20
682.98
682.43
681.96
681.99
681.80
681.8
(1.31)
ESTIMATED LAKE LEVEL
682.6
682.0
681.0
681.4
681.6
681.3
681.6
682.4
681.7
681.5
681.58
681.38
681.6
(1.00)
SOURCE WATER
PWDR-1
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
LEACHATE(LCHT)
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
LS-1RECOVERY WELL
YES
YES
YES
YES
YES
YES
1EI
Y
S
YES
XEI
Y
YES
7 RECOVERY WELLS
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

SEABOARD Q2 2020
s
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 Q2 2020
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 Q2 2020
Afl
1,600
1,400
1,200
1,000
O
Fe (mg/L)
o
fpH
800 p
--+—TSS (mg/L)
z
O
U
--X--ORP
oac
-I-COND
600 0
fTDS (mg/L)
COD (mg/L)
400
200

SEABOARD Q2 2020
7!1 r%
m
7.0
W
a
ce
W
5.0 a
J_
a
z
4.0
a
z
3.0 Ou
W
O
a
M
1.0
--$--LS1 COMP RUN (HOURS)
fLS1 COMP LOAD (HOURS)
fLS2 COMP RUN (HOURS)
LS2 COMP LOAD (HOURS)
ELECTRICITY (kW-Hr)

Water Treatment System
Dioxane
Chlorinated
ethenes
Chlorinated
ethanes
Other
organics
Total
Mass
kg
kg
kg
kg
k
Step 1
Influent'
8.67
23.7
11.6
14.2
58.2
Mechanical
Effluent'
8.83
0.203
0.108
0.129
9.269
Treatment
System
% Contaminant Removal
<
99.2%
99.1 %
99.1 %
84.4%
Irrigation water
8,829
203
108
129
9,269
Drainage water
1,183
ND
ND
ND
1,183
Lys 2 (vol. scalingfactor, 344)
Lys 7 vol. scalin actor, 343
237.3
ND
ND
ND
245.5
Lys 8 vol. scalin actor, 478
ND
ND
ND
8.2
ND
Lys 9 vol. scalin actor,294
--
--
--
--
--
Lys 10 vol. scalin actor, 148
59.2
ND
ND
ND
59.2
Step 2
Lys 11A vol. scalin actor, 341
140.8
ND
ND
ND
140.8
Phytoremediation
System
Lys 11B vol. scalin actor, 830
645.7
ND
ND
ND
645.7
Lys 12E vol. scalin actor, 174
302.7
ND
ND
13.6
316.3
Lys 12W vol. scalin actor, 456
80.2
ND
ND
ND
80.2
Lys 13E vol. scalin actor, 201
2,080
ND
4.0
6.7
2090.7
Lys 13W vol. scalin actor, 303
153.3
ND
ND
ND
153.3
Lys 14 vol. scalin actor; 274
ND
ND
ND
ND
ND
Lys 15 vol. scalin actor, 873
25.0
ND
ND
537 *
25.0
Averse (n=13)
377.5
ND
0.31
2.4
380.0
Step 2
% Contaminant Removal
95.7%
100%
99.7%
98.2%
95.9%
Overall Percent Contaminant Removal
95.6
100%
99.99%
99.98%
99.3%
'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.