WQ0002284_More Information (Received)_19890724

6,6�t-6)
DIVISION OF ENVIRONMENTAL MANAGEMENT
July 24, 1989
MRMORANDUM
TO: Carolyn McCaskill, Supervisor
State Engineering Review Unit
Permits and Engineering Branch
THROUGH: Roger K. Thorpe, er Quality Supervisor
Washington Regional Office
FROM: Alton R. Hodge, Environmenta Engineer
Water Quality Section
Washington Regional Office 40�4
SUBJECT: Kinnakeet Shores WWTP
220,000 gpd Proposed Expansion
Dare County
Kinnakeet Shores Partners have submitted a revised request to expand from the
Existing 50,000 gpd WWTP system to a 200,000 gpd WWTF system.
This proposal meets all the Division's regulations, per my review, with the
exception of 02H .0205(d)(10)(c). The hydrogeoiooi:• study called for and
received for this project, does not address groundwater quality adequately.
However, I am unaware of any hydrogeologic study -1:o date that has been
adequately in this regard.
It is my opinion that this high density rapid rate infiltration system, given
the distance to the perimeter of compliance, and therefore, the small amount of
dilution, will be unable to maintain groundwater quality standards. The
treatment facility is not designed to treat the ia<..s .ewater to the degree
necessary to maintain groundwater standards even dUo-;igh it complies with all
existing treatment regulations. In that the proposal meets all the current
regulations, the Division has no alternative but to grant the permit request.
However, the Division should begin to require monitoring to allow the
Groundwater Section to prepare a groundwater quality predictive model. A
predictive model would allow a more scientific placement of these systems and
other non -discharge systems. Mr. Bill Reid, of the Groundwater Section, is the
person to address this type of monitoring.
Kinnakeet Shores Property is such that the tightly packed disposal system allows
for maximum development and in the event the wastewater treatment system fails to
maintain groundwater quality standards, the disposal system cannot be dispersed.
The applicant should be made aware that the only solution in the event of
failure is additional -treatment and with the small allowable concentrations this
opposition will be very expensive.
ARH:ekw

, I
�—�— —
yti
n�rf � ....�y wy�— .;, , • �'_w `� tar `.
t.t 7•
j —y _—�iGLiCL•SE�� s F) 04,15 Gpu WR T-
L
jIt t. ^FAM_- r-V7.
Cr
�r
_ _ t
j K t].C+G t
iwOC.Ct7 RU7�F°` uttY n,y�l,4 R� r`n�}t1 !'._
ONTO. L C-9 POW
Or-1'`,t7iXINEU rr+ SDE
t t 1 5 ��—
ttt � LET
it. ivcu-4
MONITER WELL (T
_ �j-::•• _;,�i,,, £ 1-174' use �—,--
%
- 1 r
F --_ :i• 1 I 1
_ a I
PROPOSED KINNAKEET WWTP SITE
6/5/89
a
LAI-E
}

M, ACT NE TIC,
CLA
�1205
MUS i
-O.MID CPID WIVTP
JE4157mv auaaa UPO 1w.-TP
\C:A
Ile
0 )X CENTER
L
6 no
10 '11
0100.00 ROTARY lau wS
MOM (4- R �b) Ca""! IN
I'L 'o
25 P IVALL.
SIDE !
LOT ta4t,4Tr7.
550,121 PY,
USE Es
MONITER WELL (Typ.)
Z,
E V
4' PY
711
E0.00
7,j -3 a
61-06, 9

Y
Engineers, architects, planners, surveyors,
environmental specialists & construction managers.
June 19, 1989
Mr. A. R. Hodge
NC Department of Natural Resources
and Community Development
Water Quality Section
Division of Environmental Management
Post Office Box 1507
Washington, North Carolina 27889
Re: Kinnakeet Shores, Phase 2
Wastewater Treatment Plant Revisions
Dear Alton:
As agreed at the May 22, 1989, meeting at your office, and
follow up letter to you from Mark S. Bissell of the same
date, we are pleased to submit the following updated
information for your review and approval:
1. Calculations and groundwater model were developed by
Edwin E. Andrews, the project's hydrogeological
consultant, for the revised site plan configuration.
This revised model was based on the revised plant site
plan shown on Sheet 2A of 13, dated 6/9/89.
The revised model data is attached to this letter for
your information, consisting of six (6) pages. According
to Mr. Andrews the first page indicates that the minimum
height of the mound must be 3.0 feet above the water
table. Field survey established the water table
elevation at the existing lake some 200 feet south of the
proposed pond. The proposed pond is designed to receive
runoff from the wastewater treatment plant line sink, and
is anticipated to have a seasonal pool surface elevation
of 3.3. From the attached hydrogeological model
evaluation, the minimum mound height elevation of the
Kinnakeet Wastewater Treatment Plant rotary distribution
bed is elevation 6.3 (3.0 + 3.3 = 6.3). The rotary
distribution bed elevation is shown on the revised plan
sheets to be at elevation 8.5, just as shown on the
initial plant design submittal, or 2.2 feet above the
minimum bed elevation.
Surveying Division Bissell Associates, Inc. Currituck Branch Office
No. 5 Welch St. P.O. Box 253 4112 North Croatan Hwy, Drawer 1068 Highway 168, P.O. Box 657
Kitty Hawk, North Carolina 27949 Kitty Hawk, North Carolina 27949 Moyock, North Carolina 27958
919/261-3225 Fax [phone] Fax [phone] Fax [phone]

Three (3) sets of revised plans and specifications are
included for your review and approval. You will note
that the original hydrogeological information is still a
part of the specifications for your information, with the
revised, updated model data also provided.
2. We believe the revised plans and specifications enclosed
address all of the items discussed in the previously
referenced letter of May 22, 1989.
We appreciate your cooperation and assistance on this project
and will appreciate your review and approval on the submittal
as soon as possible. As we discussed, your issuance of a
permit to the Kinnakeet Partnership is of critical
importance. Should you have questions during your review
please contact us immediately and we will make every effort
to assist you.
Yours truly,
BISSELL ASSOCIATES
P. Phillip Shu, P.E.
Director of Engineering
cc: Ed Andrews
Bill Gilbert
Bill Reid
Rudy Smithwick
Kinnakeet Shores Partnership

BAS IN
7
2
3 .3
— T
R
E
TIME DISTANCE HEIGHT
(DRYS) (FT) (FT)
40 3@@ 1
PRESS RETURN TO CONTINUE? ■
. SEAL a
DI

RECHARGE RATE
TTHANSM I SS W I T Y
SPECIFIC YIELD
BEGINNING TIME
FINAL TIME
TIME INCREMENT
TIME OF CUT OFF
BEGINNING DISTANCE
FINAL DISTANCE
D IS°I'RNCE INCREMENT
DEPTH
IDiTH
LENGTH
ANGLE
STREAM D I TRNCE _
FOUND PROFILE
STREAM DISCHARGE
.94
350
PRESS RETURN TO CONTINUE ■
FT/DRY
SO. FT DRY

Re&HARGE RATE
=
94.
FT/DAY
TRANSMISSIVITY
=
3500
SQ.FT/DAY
SPECIFIC YIELD
=
.21
BEGINNING TIME
=
5
DAYS
FINAL TIME
=
40
DAYS
TIME INCREMENT
=
5
DAYS
TIME OF CUT OFF
=
40
DAYS
BEGINNING DISTANCE
=
0
FT
FINAL DISTANCE
=
300
FT
DISTANCE INCREMENT
=
50
FT
DEPTH
=
6.5
FT
WIDTH
=
177
FT
LENGTH
=
178
FT
ANGLE
=
0
DEGREES
STREAM DISTANCE
=
200
FEET
MOUND PROFILE
YES
STREAM DISCHARGE
YES
TIME DISTANCE
HEIGHT
(DAYS)
(FT)
(FT)
5
0
2.239
5
50
1.955
5
50
2.166
5
100
1.291
5
100
1.638
5
150
0.605
5
150
1.203
5
200
0.000
5
200
0.903
5
250
0.686
5
300
0.616
10
0
2.371
10
50
2.058
10
50
2.325
10
100
1.362
10
100
1.907
10
150
0.641
10
150
1.490
10
200
0.000
10
200
1.199
10
250
0.983
10
300
0.816
15
0
2.420
15
50
2.095
15
50
2.384
15
100
1.387
15
100
1.976
15
150
0.653
15
150
1.567
15
200
0.000
15
200
1.282
15
250
1.072
15
300
0.909
20
0
2.445
20
50
.2.114
20
50
2.414
20
100
1.400
20
100
2.011
20
150
0.660
20
150
1.607
20
200
0.000
20
200
1.327
20
250
1.121
20
300
0.961
0

SAVa 01
A'Va/'14 OIRnO VO+3P96ti0' z+ = 39d`dHDSIa 7b'101
0'o
0000•0
91PI
l'L
£000'0
30L
6'9
oz00°0
t-S£
S•lz
1900.0
LLL
Vti£
8600.0
68
9°6£
£110'0
kv
t,•It,
8110.0
0
Lti0'
00z'
66£'
000'
zL9'
OL9'
L90'
61-P
z9ty'
£VL
£8v
ti£0'
881'
68£'
000°
z99'
999'
6S0'
91t,'
99P,
6£1'
LLt,
L10'1
£L1'L
SL£'1
000•
099'1
999'
8tio•z
£Lti'l
9tlt,' z
££1'z
0Lv'z
966'0
z9l'L
Sss'L
000'0
££9'1
t,99' 0
££0•z
sot►•!
££v'z
9z1'z
0 9 k z
SAba
(AVa/•1J'�iS)
z
z
z
1
I
L
0
L
0
z
l
z
z
0
0
(1�)
(1d)
HION37
100� 1
wlv3d1S
imn
1b'
ON07b
/3Jd`dHOSIa
GV3H
30N`d1SIa
wv3diS
01 30dvH0SIa
1
0o£
1
Osz
1
ooz
0
ooz
1
OS1
0
091
z
001
L
001
0s
0s
0
o0£
OSz
ooz
ooz
091
091
001
001
os
0!;z
0
00£
osz
ooz
ooz
091
0S1
001
001
OS
0s
0
00£
osz
sz
0J
0v
O t,
0 t0 t,
0 t,
0 to
0 t'
0f
0V
0V
S£
S£
S£
s£
S£
S£
S£
S£
s£
S£
s£
0£
0£
0£
0£
0£
D£
0£
0£
0£
0£
0£
Sz
sz
Sz
Sz
Sz
sz
Sz
z
z
z

44 0.0120 42.0
89., 0.0105 36.9
4`'177 0.0068 23.9
354 0.0025 8.9
708 0.0000 0.0
TOTAL'DISCHARGE _ +2.16096E+04 CUBIC FT./DAY
15 DAYS
0
0.0128
44.9
44
0.0123
42.9
89
0.0108
37.7
177
0.0071
24.7
354
0.0027
9.6
708
0.0006
2.3
1416
0.0000
0.0
TOTAL DISCHARGE = +2.48766E+04 CUBIC FT./DAY
20 DAYS
0
0.0129
45.3
44 _.
0.0124
43.4 -
89
0.0109
38..2
177
0.0072
25.2
w. 354
0.0029
10.0
708
0.0007
2.6
1416
0.0000
0.1
2832
0.0000
0.0
TOTAL DISCHARGE
_ +2.58534E+04
CUBIC FT./DAY
25 DAYS
0
0.0130
45.6
44
0.0125
43.6
.89
0.0110
-38.4
177
0.0073
25.4
354
0.0029
10.3
708
0.0008
2.8
1416
0.0001
0.3
2832
0.0000
0.0
TOTAL DISCHARGE
= +2.67631E+04
CUBIC FT./DAY
30 DAYS
0
0.0131
45.8
44
0.0125
43.8
89
0.0110
38.6
177
0.0073
25.6
354
0.0030
10.4
708
0.0008
2.9
1416
0.0001
0.4
2832
0.0000
0.0
TOTAL DISCHARGE = +2.74076E+04 CUBIC FT./DAY
35 DAYS
0 0.0131 45.9

44
0.0126
44.0
89
0.0111
38.8
77
0.0074
25.7
354
0.0030
10.6
708
0.0009
3.0
1416
0.0000
0.0
TOTAL DISCHARGE
_ +2.67028E+04 CUBIC FT./DAY
40 DAYS
0
0.0131
46.0
44
0.0126
44.1
89
0.0111
38.9
177
0.0074
25.8
354
0.0030
10.7
708
0.0009
3.1
1416
0.0001
0.2
2832
0.0000
0.0
TOTAL DISCHARGE _ +2.73125E+04 CUBIC FT./DAY

BAS IN
7
2
0
0
.3
3001 1 1 1 _,__o I
TIME BISTRNCE
40
. 300
!?'BESS BETURN TO CONTINUE.
�ea�eeEti®o�e,e,sa�, .
0
SEAL
tL-
ADD°°
HEIGHT
(FT)
I

RECHARGE RATE _
TRRNSMISSIUITY
SPECIFIC YIELD _
BEGINNING TIME
FINAL TIME _
TIME INCREMENT =
TIME OF CUT OFF =
INNING D I S TRN CE _
FINAL DISTANCE
_
TRNCE INCREMENT =
DEPTH =
WIDTH =
LENGTH _
ANGLE _
STREAM DISTANCE
-
MOUND PROFILE
STREAM DISCHARGE
DAYS
DAYS
DAYS
DAYS
FT
FT
FT
FT
FT
FT
EiGREE
FEET
PRESS RETURN TO CONTINUE ■

RECHARGE RATE
=
94
FT/DAY
TRAWSMISSIVITY
=
3500
SQ.FT/DAY
SPECIFIC YIELD
=
.21
BEGINNING TIME
=
5
DAYS
FINAL TIME
=
40
DAYS
TIME INCREMENT
=
5
DAYS
TIME OF CUT OFF
=
40
DAYS
BEGINNING DISTANCE
=
0
FT
FINAL DISTANCE
=
300
FT
DISTANCE INCREMENT
=
50
FT
DEPTH
=
6.5
FT
WIDTH
=
177
FT
LENGTH
=
178
FT
ANGLE
=
0
DEGREES
STREAM DISTANCE
=
200
FEET
MOUND PROFILE
YES
STREAM DISCHARGE
YES
TIME DISTANCE
HEIGHT
(DAYS)
(FT)
(FT)
5
0
2.239
5
50
1.955
5
50
2.166
5
100
1.291
5
100
1.638
5
150
0.605
5
150
1.203
200
0000
5
200
0.903
5
250
0.686
5
300
0.616
10
0
2.371
10
50
2.058
10
50
2.325
10
100
1.362
10
100
1.907
10
150
0.641
10
150
1.490
10
200
0.000
10
200
1.199.
10
250
0.923
10
300
0.816
15
0
2.420
15
50
2.095 :.
15
50
'2.384
15
100
1.387
15
100
1.976
15
150
0.653
15
150
1.567
15
200
0.000
15
200
1.282
15
250
1.072
15
300
0.-909
20
0
2.445
20
50
.2.114
20
50
2.414
20
100
1.400
20
100
2.011
20
150
0.660
20
150
1.607
20
200
0.000
20
200
1.327
20
250
1.121
20
300
Q.961 ...

0
50
50
100
100
150
150
200
200
250
300
0
50
50
100
100
150
150
200
200
250
300
0
50
50
100
100
150
150
200
200
250
300
0
50
50
100
100
150
150
200
200
250
300
DISCHARGE TO STREAM
2.460
2.126
2.433
1.408
2.033
0.664
1.633
0.000
1.355
1.152
0.995
2.470
2.133
2.446
1.413
2.048
0.666
1.650
0.000
1.375
1. 173
1.017
2.477
2.139
2.455
1.416
2.059
0.668
1.662
0.000
1.389
1.188
t 034
2:483
2.143
2.462
1.419
2.067
0.670
1.672
0.000
1.399
1.200
1.047
DISTANCE
HEAD
DISCHARGE/
ALONG
AT
UNIT
STREAM
1 FOOT
LENGTH
(FT)
(FT)
(S2.FT./DAY%
5 DAYS
0
0.0118
41.4
44
0.0113
39.5
89
0.0098
34.4
177
0.0061
21.5
354
0.0020
6.9
708
0.0003
1.1
1416
0.0000
0.0
TOTAL DISCHARGE _ +2.04964E+04 CUBIC FT./DAY
10 DAYS

44
0.0120
42.0
89
0.0105
36.9
177
0.0068
23.9
'354
0.0025
8.9
708
0.0000
0.0
TOTAL DISCHARGE
_ +2.16096E+04
CUBIC FT./DAY
15 DAYS
0
0.0128
44.9
44
0.0123
42.9
89
0.0108
37.7
177
0.0071
24.7
354
0.0027
9.6
708
0.0006
2.3
1416
0.0000
0.0
TOTAL
DISCHARGE _ +2.48766E+04
CUBIC
FT./DAY
20
DAYS
_
0
0 .012 9:_:=
,, _.,r 45.3
:: 44
0.0124
43.4
89
-A . 0 10 9
38_. 2
-177
0.0072
25.2
_.., ._
354
0.0029
10.0
708
0.0007
2.6
1416
'0
0.1
_
_2832
0.0000
0.0
TOTAL
DISCHARGE _ +2.58534E+04
CUBIC
FT./DAY
25 -`DAYS
0
0.0130
45.6
44
0.0125
43.6
89
0.0110
=38.4
177
0.0073
-25.4
354
0.0029
10.3
-
708
0.0008
2.8
1416
0.0001
0.3
2832
0.0000
0.0
TOTAL
DISCHARGE _ +2.67631E+04
CUBIC
FT./DAY
30 DAYS
0
0.0131
45.8
44
0.0125
43.8
89
0.0110
38.6
177
0.0073
25.6
354
0.0030
10.4
708
0.0008
2.9
1416
0.0001
0.4
2832
0.0000
0.0
TOTAL DISCHARGE = +2.74076E+04 CUBIC FT./DAY
35 DAYS
0 0.0131 45.9

44
0.0126
44.0
89
0.0111
38.8
177
0.0074
25.7
'354
0.0030
10.6
708
0.0009
3.0
1416
0.0000
0.0
TOTAL DISCHARGE
= +2.67028E+04
CUBIC FT./DAY
40 DAYS
0
0.0131
46.0
44
0.0126.
44.1
89
0.0111
38.9
177
0.0074
25.8
354
0.0030
10.7
708
0.0009
3.1
1416
0.0001
0.2
2832
0.0000
0.0
TOTAL DISCHARGE = +2.73125E+04 CUBIC FT./DAY
9

BASIN
7
i�
S
T
R
E
H
TIME DISTANCE. HEIGHT
(DAYS) (FT) (FT)
40 2-100 1
PRESS RETURN TO CONTINUE?
g
SEAL
m a

U)
H �EEEIH
MM2041-4
zp-4zxl-4
MOM nzt-I
MM bozo
=C:D MMZ
(OlEd-P-1 01-41-40 dzzomo
z
II II II II II II II II II II II II II II II
H
z
mmhjGl-&l-LlmulwGlArlALrl- WE
®
tv m w u m
m m
Ht
mm
tz

RECHARGE RATE
=
94.
FT/DAY
�TRANSMISSIVITY
=
3500
SQ.FT/DAY
SPECIFIC YIELD
=
.21
BEGINNING TIME
=
5
DAYS
FINAL TIME
=
40
DAYS
TIME INCREMENT
=
5
DAYS
TIME OF CUT OFF
=
40
DAYS
BEGINNING DISTANCE
=
0
FT
FINAL DISTANCE
=
300
FT
DISTANCE INCREMENT
=
50
FT
DEPTH
=
6.5
FT
WIDTH
=
177
FT
LENGTH
=
178
FT
ANGLE
=
0
DEGREES
STREAM DISTANCE
=
200
FEET
MOUND PROFILE
YES
STREAM DISCHARGE
YES
TIME DISTANCE
HEIGHT
(DAYS)
(FT)
(FT)
5
0
2.239
5
50
1.955
5
50
2.166
5
100
1.291
5
100
1.638
5
150
0.605
5
150
1.203
5
200
0.000
5
200
0.903
5
250
0.686
5
300
0.616
10
0
2.371
10
50
2.058
10
50
2.325
10
100
1.362
10
100
1.907
10
150
0.641
10
150
1.490
10
200
0.000
10
200
1.199
10
250
0.983
10
300
0.816
15
0
2.420
15
50
2.095 _.
15
50
2.384
15
100
1.387
15
100
1.976
15
150
0.653
15
150
1.567
15
200
0.000
15
200
1.282
15
250
1.072
15
300
0.909
20
0
2.445
20
50
.2.114
20
50
2.414
20
100
1.400
20
100
2.011
20
150
0.660
20
150
1.607
20
200
0.000
20
200
1.327
20
250
1.121
20
300
0,961

25 0 2.460
25 50 2.126
25 50 2.433
2 100 1.408
25 100 2.033
25 150 0.664
25 -150 1.633
25 200 0.000
25 200 1.355
25 250 1.152
25 300 0.995
30 0 2.470
30 50 -2.133
30 50 2.446
30 100 1.413
30 100 2.048
30 150 0.666
30 150 1.650
30 200 0.000
30 200 1.375
30 250 1.173
30 300 1.017
35 0 2.477
35 50 . 2. 139
35 50 2.455
35 100 1.416
35 100 2.059
35 150 0.668
35 150 1.662
35 200 0.000
35 200 1.389
35 250 1.188
35 300 1.034
40 0 2.483
40_ 50 2.143
40 50 2.462
40 100 1.419
40 100 2.067
40 150 0.670
40 150 1.672
40 200 0.000
40 200 1.399
40 250 1.200
40 300 1.047
DISCHARGE TO STREAM
DISTANCE HEAD DISCHARGE/
ALONG AT UNIT
STREAM 1 FOOT LENGTH
(FT) (FT) (SQ.FT./DAY)
5 DAYS
0
0.0118
41.4
44
0.0113
39.5
89
0.0098
34.4
177
0.0061
21.5
354
0.0020
6:9
708
0.0003
1.1
1416
0.0000
0.0
TOTAL DISCHARGE = +2.04964E+04 CUBIC FT./DAY
10 DAYS

44
0.0120
42.0
89
0.0105
36.9
177
0.0068
23.9
;. 354
0.0025
8.9
708
0.0000
0.0
TOTAL DISCHARGE
_ +2.16096E+04 CUBIC
FT./DAY.:
15 DAYS
0
0.0128
44.9
44
.-..0.0123
42.9
89
0.01.08
37.7
177
0.0071
24.7
354
0.0027
9.6
708
0.0006
2.3
1416
0.0000
0.0
TOTAL DISCHARGE
_ +2.48766E+04
CUBIC
FT./DAY
20 DAYS
J 0
_.0-.0129
45.3
--44-�0.0124
43.4
89
0.0109
38-. 2
177
0.0072
25.2
354
0.0029
10.0
:{
708
" 0.0007
2.6
1416 '-------0.0000
_-----
, 0. 1
:.:2832
0.0000
:0.0`
TOTAL DISCHARGE _ +2.58534E+04
CUBIC
FT./DAY
25 DAYS
0
0.0130
45.6
44
0.0125
-_43.6
- 89 ":.
0.0110
_:38.4
- 177
0.0073 :.
_ 25.4
354
0.0029:__
_.
:.10.3
708
0.0008
2.8
1416
0.0001
0.3
2832
0.0000
0.0
TOTAL DISCHARGE _ +2.67631E+04
CUBIC
FT./DAY
30 DAYS
0
0.0131
45.8
44
0.0125
43.8
89
0.0110
38.6
177
0.0073
25.6
354
0.0030
10.4
708
0.0008
2.9
1416
0.0001
0.4
2832
0.0000
0.0
TOTAL DISCHARGE = +2.74076E+04 CUBIC FT./DAY
35 DAYS
0 0.0131 45.9

44
0.0126
44.0
89
0.0111
38.8
177
0.0074
25.7
-Y354
0.0030
10.6
708
0.0009
3.0
1416
0.0000
0.0
TOTAL DISCHARGE
= +2.67028E+04
CUBIC FT./DAY
40 DAYS
0
0.0131
46.0
44
0.0126
44.1
89
0.0111
38.9
177
0.0074
25.8
354
0.0030
10.7
708
0.0009
3.1
1416
0.0001
0.2
2832
0.0000
0.0
TOTAL DISCHARGE = +2.73125E+04 CUBIC FT./DAY