NC0072702_Plan of Action_20180427

Town of Beaufort
701 Front St. • P.O. Box 390 • Beaufort, N.C. 285i6
252-728-2141 •252-726-3982 fax
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April 27, 2018
Mr. Dean Hunkele, Senior Environmental Specialist
NC DEQ / Division of Water Quality
Wilmington Regional Operations
127 Cardinal Drive
Wilmington, North Carolina 28405
RE: Town of Beaufort Glenda Drive WTP \ NPDES Discharge Permit NC 0072702
PROPOSED ALTERNATIVE PLAN FOR COMPOSITE SAMPLE by the TOWN OF BEAUFORT
Dear Mr. Hunkele:
In conformance with requirements of the above -referenced permit, the Town of Beaufort is
proposing an Alternative Plan for Composite Sampling at the Glenda Drive Water Treatment
Plant.
The Glenda Drive WTP utilizes two (2) ion -exchange water softeners to reduce hardness of the
potable water leaving the water treatment plant. The softeners undergo regeneration after
130,000 gallons of raw water has passed through the softener. The regeneration cycle includes
four (4) steps as follows:
n
CYCLE STEPS
Q-Flow
TIME
VOLUME
1
BACKWASH STEP
62 gpm
16 minute
992 gallon
2
BRINE STEP
27 gpm
45 minute
1215 gallon
Mayor Everette S. (Rett) Newton
Commissioner John Hagle. Commissioner Sharon Harker. Commissioner Marianna Hollinshed
Commissioner Ann Carter • Commissioner Charles McDonald
Town Manager John Day

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W
Town of Beaufort
701 Front St.. P.O. Box 390 • Beaufort, N.C. 28s16
252-728-2141- 252-728-3982 fax
1.X,j_Ix+wfurtneurg
3
FAST RINSE STEP
27 gpm
15 minute
405 gallon
4
Slow RINSE STEP
24 gpm
21 minute
504 gallon
TOTAL
97 minute
3,116 gallon
The composite sample will be created by taking equal specimens in excess during each of the
four steps with number of specimens and intervals shown by attached worksheets. The grab
specimens for each step shall generally be taken at start, middle and end of the step with intervals
varying from 3 to 9 minutes. The specimens taken in excess are from flow over a v-notch weir by
using fixed volume container which could be a quart, %-gallon or gallon and no less than a liter.
The specimens taken from each step shall be placed in container and mixed to have four
homogenous specimens in four separate containers — one container for each step.
A prescribed volume from each of the separate containers shall be placed in one container to
create the composite sample. The proportionate volumes shown by attached worksheet will
create a five (5) gallon composite sample. The total composite sample can be modified relevant
to what is necessary for laboratory testing with proportion percentages remaining constant.
Please call if you have any questions.
Si e y,
John Day, Town Manage
Town of Beaufort
Mayor Everette S. (Rett) Newton
Commissioner John Hagle • Commissioner Sharon Harker. Commissioner Marianna Hollinshed
Commissioner Ann Carter • Commissioner Charles McDonald
Town Manager John Day

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Town of Beaufort
701 Front St. • P.O. Box 390 • Beaufort, N.C. 28516
252-728-2141. 252-728-3982 fax
""wheauliortnce rg
enclosure
cc: Brianna Young, Environmental Senior Specialist— NCDEQ\DWR
Gale Smith, P.E. — Rivers & Associates
Wade Keeler, WTP Operator
Donovan H. Willis, Public Utilities Director— WWTP ORC
Mayor Everette S. (Rett) Newton
Commissioner John Hagle • Commissioner Sharon Harker • Commissioner Marianna Hollimhed
Commissioner Ann Carter • Commissioner Charles McDonald
Town Manager John Dav

BACKWASH STEP
METER
start: 55024800
end: 55025800
AY SUBTOTAL 1000
S
2
BRME STEP
METER
start:
end: 55026900
SAY I SUBTOTAL
GLENDA DRIVE WATER TREATMENT PLANT
SOFTENER REGENERATION -BACKWASH
TIME
----UMM
----0©00000
MM
Rectangular Prism Brine Dai-Tank
=����Iength
width height
18 inches
MOM,
regeneration- GLENDA I of

start: 155026900
end: 55027300
SAY1 SUBTOTAL 400
4
SLOW RINSE STEP
METER
start:
55027300
55027800
end:
500
GLENDA DRIVE WATER TREATMENT PLANT
SOFTENER REGENERATION -BACKWASH
SOFTENER NO. 01
15.0 minute 26.67 GPM 0 0 0 3 8 12 IS
76.2 6I 61 61 64 69 73 76
0 1 0 1 0 1 3 1 5 1 4 13
min
min
min
min
min
min
min
21.4
minute
23.42
GPM
0
0
0
3
11
18
21
76
76
76
79
87
94
97
0
1 0
1 0
1 3
1 8
1 7
1 3
COMPOSITE SAMPLE FORMULA for Glenda Drive Softener No. 1
TABLE: Proportion for Sample
IF 5.00 Gallon Sample
BACKWASH STEP
1000
gallon
16.2
minute
32.1%
BRINE STEP
1220
gallon
45.0
minute
39.1%
FAST RINSE STEP
400
gallon
15.0
minute
12.8%
SLOW RINSE STEP
500
gallon
21.4
minute
16.0%
TOTAL /Regeneration Cycle
I 3120
GALLON
97.6
MINUTE
100.0%
205 Foz
250 oz
82 oz
103 oz
or 1 1
5.00 Gallon Sample
or 1.60256
or 1.95513
or 1 5
regeneration- GLENDA 2 of 4

grab specimen
16
CONTRPJE
16
0
END
BEGIN
BACKWASH
BRINE STEP
STEP
MMM�
Mm�
mm�
grab specimens - GLENDA 3 of 04

GLENDA DRIVE WATER TREATMENT PLANT
MINUTE FOR CYCLE
50
MINUTE FOR STEP
34
specimen/stepspecimen1step
s ecimen /cycle
51
35
52
36
53
37
54
38
55
39
56
40
Wspeclimen
57
41
5
of
8
specimens
58
42
59
43
60
61
-
62
CONTINUE
44
45
0
1
END
BEGIN
BRINE WASH
FAST RINSE
STEP
STEP
63
21
3
minute
64
3
rab specimen
l
9
specimens
65
4
66
5
67
6
68
7
5
minute
69
8
grab specimen
2
101
specimens
70
9
71
10
72
11
4
minute
73
12
grab specimen
4
of
11
specimens
74
113
75
76
-
77
CONTINUE
1 14
15
0
1
3
END
BEGIN
minute
FAST RINSE
SLOWRINSESTEP
STEP
78
2
3
minute
79
3
grab specimen
I
1 12
s ecimen
80
4
81
5
82
6
83
7
84
8
85
9
86
10
8
minute
87
11
grab specimen
1
2
13
specimens
88
12
89
13
90
14
91
15
92
16
93
17
7
minute
94
18grab
specimen
3
of
14
specimens
951
1 19
961 1 201 3 Iminute
97 END CYCLE 21 END SLOW RINSE STEP
grab specimens - GLENDA 4 of 04