4101_Guilford_HighPoint_MSWLF_Seaboard_RemedialProgressReport_FID1513273_20201130

SEABOARD GROUP II AND THE CITY OF HIGH POINT
November 30, 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 Third 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 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 2020 the mechanical and phytoremediation treatment systems
processed 3,918,273 gallons of extracted groundwater and leachate. Also during the third
quarter of 2020 the following shutdown exceeding one day in duration occurred:
Date
Duration
Reason for Shutdown
September 9, 2020
9.0 days
Citric wash of treatment system, clean lime
tank, replace pump impellers, and replace filter
media
During the third quarter of 2020, only one significant shutdown occurred, as noted above. This
shutdown allowed for routine scheduled maintenance of the treatment system and related
components.

The attached figures provide the results of the full scale operation of the treatment system during
the third 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
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 -Q42020
INITIAL
WEEK
WEEK
WEEK
WEEK4
WEEKS
WEEK
WEEK
WEEK
WEEK
WEEK 10
WEEK 11
WEEK 12
WEEK 13
Totals
Measure
METER READING
LEACHATE (GALLONS)
4,180,641
4,278,650
4,396,163
4,516,203
4,622,644
4,751,093
4,876,090
5,017,353
5,148,056
5,263,340
5,387,081
5,387,081
5,497,230
5,630,146
1,449,505
GALLONS
LSl-RWs (GALLONS)
4,623,901
4,689,655
4,766,132
4,845,648
4,916,694
4,990,515
5,061,720
5,130,161
5,206,168
5,269,437
5,339,078
5,339,078
5,398,701
5,474,863
850,962
GALLONS
PWDR1(GALLONS)
5,522,446
5,628,627
5,736,203
5,835,788
5,935,842
6,042,139
6,143,730
6,245,257
6,354,153
6,466,649
6,600,873
6,600,873
6,716,368
6,834,783
1,312,337
GALLONS
SIS-RWs(GALLONS)
2,176,621
2,196,886
2,219,280
2,238,154
2,261,039
2,284,818
2,305,933
2,329,848
2,354,613
2,375,243
2,397,146
2,397,146
2,418,411
2,442,670
266,049
GALLONS
PHYTO DISCH. (GALLONS)
7,168,097
7,464,026
7,794,362
8,116,842
8,422,432
8,759,812
9,075,645
9,421,028
9,766,918
10,081,230
10,432,154
10,432,154
10,738,979
11,086,370
3,918,273
GALLONS
AIR STRIP. RUNTIME (HRS)
5,822
5,990
6,149
6,305
6,457
6,625
6,792
6,952
7,120
7,271
7,436
7,436
7,575
7,743
1921 (88%)
HOURS
LSl COMP RUN (HOURS)
9,666
9,822
9,981
10,130
10,280
10,450
10,620
10,780
10,950
11,100
11,260
11,260
11,400
11,570
1,904
HOURS
LSl COMP LOAD (HOURS)
5,133
5,194
5,262
5,325
5,381
5,449
5,521
5,592
5,678
5,753
5,834
5,834
5,894
5,986
853
HOURS
LS2 COMP RUN (HOURS)
19,720
19,870
20,020
20,170
20,310
20,470
20,630
20,780
20,940
21,090
21,250
21,250
21,380
21,540
1,820
HOURS
LS2 COMP LOAD (HOURS)
2,097
2,114
2,133
2,150
2,168
2,188
2,206
2,225
2,246
2,265
2,283
2,283
2,299
2,318
221
HOURS
ELECT. UPPER (kW-Hr)
1,401
1,437
1,473
1,511
1,547
1,586
1,623
1,660
1,698
1,733
1,772
1,772
1,817
1,857
456
KW-HR
WATER METER (CF)
448,173
448,716
448,821
449,900
450,651
451,689
452,532
453,791
454,932
455,893
456,878
456,878
458,821
459,430
84,202
GALLONS
BACKWASH PUMP (GAL.)
359,571
363,229
369,634
376,950
381,519
387,919
393,408
401,646
408,963
415,351
421,914
421,914
423,751
427,423
67,852
GALLONS
IRRIGATION ZONES (GALLONS):
ZONE 1
99,248
121,363
143,478
164,965
185,293
206,673
226,491
247,859
268,191
287,094
308,571
308,571
326,183
346,833
247,585
GALLONS
ZONE 2
132,246
152,738
173,230
193,682
212,591
233,674
253,597
275,202
296,103
315,518
337,577
337,577
355,447
375,222
242,976
GALLONS
ZONE 3
130,741
151,934
173,127
194,049
213,871
235,729
256,446
278,184
299,707
319,835
342,557
342,557
361,501
383,091
252,350
GALLONS
ZONE
106,372
125,155
143,938
162,150
179,314
198,322
216,594
236,251
255,052
272,314
292,052
292,052
308,529
326,722
220,350
GALLONS
ZONE 5
125,299
146,340
167,381
188,057
207,568
228,577
248,458
270,224
291,417
310,953
332,776
332,776
351,316
371,680
246,381
GALLONS
ZONE 6
128,099
149,925
171,751
192,730
212,692
234,756
255,924
278,658
301,147
321,330
344,473
344,473
363,967
385,998
257,899
GALLONS
ZONE 7
133,158
154,360
175,562
196,467
216,660
238,545
259,349
281,950
303,991
324,054
347,265
347,265
366,299
387,113
253,955
GALLONS
ZONE 8
133,235
155,516
177,797
199,518
220,063
242,006
262,696
286,344
309,185
330,080
353,367
353,367
372,957
394,457
261,222
GALLONS
ZONE 9
133,189
155,647
178,105
200,420
222,155
245,694
267,992
292,537
316,379
338,541
363,466
363,466
384,843
408,228
275,039
GALLONS
ZONE 10
133,887
157,350
180,813
203,687
225,115
248,943
270,833
295,213
321,315
343,666
368,595
368,595
392,703
421,688
287,801
GALLONS
ZONE 11
77,916
89,658
101,400
113,611
122,794
135,437
147,647
160,072
172,660
184,358
197,276
197,276
208,379
218,316
140,400
GALLONS
ZONE 12
127,201
149,230
171,259
193,074
213,540
235,836
257,250
280,545
304,033
325,112
348,769
348,769
369,062
391,180
263,979
GALLONS
ZONE 13
117,559
135,766
153,973
172,470
190,113
209,503
227,737
247,606
266,922
284,441
304,568
304,568
321,320
340,068
222,509
GALLONS
ZONE 14
115,269
132,913
150,557
168,276
184,963
203,066
220,368
239,337
257,671
274,444
293,600
293,600
309,627
327,551
212,282
GALLONS
ZONE 15
117,156
138,405
159,654
180,997
200,747
222,907
243,379
265,699
288,201
309,135
332,494
332,494
357,839
373,612
256,456
GALLONS
Zone 16
88,120
108,212
128,304
148,591
164,462
188,127
207,569
228,660
248,820
267,734
289,315
289,315
306,624
326,534
238,414
GALLONS
DAILYAVERAGE
Average
Units
AVERAGE RUNTIME
100%
95%
93%
90%
100%
99%
95%
100%
90%
86%
0%
97%
100%
88%
Percent
AVERAGE FLOW (GPM)
29.4
32.8
32.0
30.3
33.5
31.3
34.3
34.3
31.2
30.5
0.0
35.5
34.5
30.0
GPM
EFF. DISCH. (GALLONS)
42,276
47,191
46,069
43,656
48,197
45,119
49,340
49,413
44,902
43,866
51,138
49,627
43,138
GPD
TOTAL INFLUENT (GALLONS)
41,458
46,280
45,431
42,918
47,478
45,558
47,878
48,624
44,526
43,689
51,089
50,250
42,706
GPD
INF. LEACHATE (GALLONS)
14,001
16,788
17,149
15,206
18,350
17,857
20,180
18,672
16,469
15,468
18,358
18,988
15,960
GPD
INF. LS1-RWs (GALLONS)
9,393
10,925
11,359
10,149
10,546
10,172
9,777
10,858
9,038
8,705
9,937
10,880
9,365
GPD
INF. PWDR) (GALLONS)
15,169
15,368
14,226
14,293
15,185
14,513
14,504
15,557
16,071
16,778
19,249
16,916
14,448
GPD
INF. SIS-RWs (GALLONS)
2,895
3,199
2,696
3,269
3,397
3,016
3,416
3,538
2,947
2,738
3,544
3,466
2,932
GPD
WEEKLY RUNTIME (DAYS)
7.0
6.6
6.5
6.3
7.0
7.0
6.7
7.0
6.3
6.9
5.8
7.0
6.2
DAYS/WK
LSl COMP RUN (HOURS)
22.3
22.7
21.3
21.4
24.3
24.3
22.9
24.3
21.4
20.0
23.3
24.3
21.0
HRS/DAY
LSl COMP LOAD (HOURS)
8.7
9.7
9.0
8.0
9.7
10.3
10.1
12.3
10.7
10.1
10.0
13.1
9.4
HRS/DAY
LS2 COMP RUN (HOURS)
21.4
21.4
21.4
20.0
22.9
22.9
21.4
22.9
21.4
20.0
21.7
22.9
20.0
HRS/DAY
LS2 COMP LOAD (HOURS)
2.4
2.7
2.4
2.6
2.9
2.6
2.7
3.0
2.7
2.3
2.7
2.7
2.4
HRS/DAY
ELECTRICITY(kW-Hr)
5.1
5.1
5.4
5.1
5.6
5.3
5.3
5.4
5.0
4.9
7.5
5.7
5.0
kW-HR/DAY
CITY WATER (GALLONS)
77.6
15.0
154.1
107.3
148
120
180
163
137
123
324
87
942
GPD
BACKWASH PUMP (GAL.)
522.6
915.0
1,045.1
652.7
914
784
1,177
1,045
913
820
306
525
740
GPD
EFFLUENT LABS
Fe (mg/L)
0.08
0.31
0.20
0.27
0.35
0.76
0.23
0.25
0.5
0.6
0.72
0.53
0.48
0.4
mg/L
pH
6.78
6.57
6.38
6.31
7.25
7.15
7.24
7
7.13
7
6.8
6.57
6
7
m/L
ORP
57
71
83
68
53
87
52
72
61
85
122
79
107
78
mV
COND
1183
1184
1150
1081
1455
1705
1132
1,051
1,166
1,225
1,743
1,235
1,237
1,280
uS/cm
TDS(mg/L)
823.7
821
799
744.5
1016
1208
784.9
729
811
582
1237
872
869
872.8
mg/L
TSS (mg/L)
0
5
1
4
2
8
0
8
12
8
3
1
4
mg/L
COD (mg/L)
72
114
69
79
71
70
92
60
78
77
72
83
77
78.5
mg/L
WELL LEVELS
Elevation
Change
O W DR-4
682.16
OWDR-2
681.90
678.92
676.50
677.42
676.84
676.99
677.40
677.21
678.02
675.49
682.50
676.41
676.00
677.5
(4.42)
PWDR-1
689.23
663.71
658.72
658.67
658.68
658.70
658.70
658.72
658.32
657.32
658.71
659.0
(30.21)
OWDR-3
681.80
686.67
686.67
686.67
686.67
686.67
686.67
686.67
686.67
686.67
686.67
686.67
686.67
686.7
4.87
PW-6D (696.79)
680.37
684.78
684.78
684.78
684.78
684.78
684.78
684.78
684.78
684.78
684.78
684.8
4.41
OWLFS-2
680.00
PW-16D
680.52
PW-15D
683.12
682.88
681.73
682.21
681.88
681.72
681.95
682.05
681.55
683.10
681.35
682.0
(1.08)
ESTIMATED LAKE LEVEL
682.6
681.4
681.2
681.3
681.7
681.8
681.5
681.4
681.2
682.30
682.00
681.6
(0.97)
SOURCE WATER
PWDR-1
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
No
No
YES
YES
LEACHATE(LCHT)
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
No
No
YES
YES
LS-1 RECOVERY WELLS
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
No
No
YES
YES
SIS RECOVERY WELLS
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
No
No
YES
YES

SEABOARD Q3 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

SEABOARD Q3 2020
695.00
690.00
685.00
OWDR-4
680.00
OWDR-2
,Jl,
PWDR-1
>
J
675.00
OWDR-3
J
J
"'
PW-6D (696.79)
tOWLFS-2
670.00
tPW-16D
DPW-15D
665.00
ESTIMATED LAKE LEVEL
655.00 '
0 1 2 3 4 5 6 7 8 9 10 11 12 13
WEEK

SEABOARD Q3 2020
I A
2,000
1,800
1,600
1,400
1,200
p
Fe (mg/L)
o
fpH
1,000
p
--+—TSS (mg/L)
z
O
U
--X--ORP
800
-I-COND
fTDS (mg/L)
600
COD (mg/L)
400
200

SEABOARD Q3 2020
m
7.0
6.0
W
a
ce
W
5.0
a
J_
a
--$--LS1 COMP RUN (HOURS)
4.0
z
fLS1 COMP LOAD (HOURS)
a
g
fLS2 COMP RUN (HOURS)
z
LS2 COMP LOAD (HOURS)
3.0
uELECTRICITY
(kW-Hr)
W
0
a
2.0
1.0

Water Treatment System
Dioxane
Chlorinated
ethenes
Chlorinated
ethanes
Other
organics
Total
Mass
kg
kg
kg
kg
k
Step 1
Influent'
10.38
42.0
18.1
17.5
88.0
Mechanical
Effluent 1
9.44
0.16
0.088
0.088
9.8
Treatment
System
% Contaminant Removal
9.1 %
99.6%
99.5%
99.5%
88.9
Irrigation water
9,440
160
88
88
9,800
Drainage water
184
ND
ND
4.0
188
Lys 2 (vol. scaling factor, 259)
Lys 7 vol. scalin actor, 270
212
ND
ND
7.8
220
Lys 8 vol. scalin actor, 428
ND
ND
ND
ND
ND
Lys 9 vol. scalin actor, 250
--
--
--
--
--
Lys 10 vol. scalin actor, 403
318
ND
ND
ND
318
Step 2
Lys 11A vol. scalin actor, 277
--
--
--
--
--
Phytoremediation
System
Lys 11B vol. scalin actor, 683
204
ND
ND
ND
204
Lys 12E vol. scalin actor, 166
322
ND
ND
13.1
335
Lys 12W vol. scalin actor, 346
33.5
ND
ND
ND
33.5
Lys 13E vol. scalin actor, 179
--
--
--
--
--
Lys 13W vol. scalin actor, 217
78.6
ND
ND
ND
78.6
Lys 14 vol. scalin actor, 208
ND
ND
ND
ND
ND
Lys 15 vol. scalingfiactor, 1,009
9.9
ND
ND
87.7 *
9.9
Averse (n=13)
104.8
100%
100%
1.9
106.7
Step 2
% Contaminant Removal
98.9%
100%
100%
97.8%
98.9%
Overall Percent Contaminant Removal
99.0%
100%
100%
99.98%
99.9%
'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.