NC0062413_Wasteload Allocation_19920609

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0062413
Linville Ridge Country Club WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Compliance
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
June 9, 1992
'1`liis document is printed on reuse paper - igaiore any
content on the reYerse side

State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27604
James G. Martin, Govemor George T. Everett, Ph.D.
William W. Cobey, Jr., Secretary Director
June 9, 1992
Mr. Gary Johnston
Linville Ridge Development Company
PO Box 704
Linville, NC 28646
SUBJECT: NPDES Permit
Number NC0062413
Linville Ridge Development
Avery County
Dear Mr. Johnston;
On January 10, 1992, James B. Cranford, PE with CRW, PC submitted for you a modification
request for the subject permit. The proposed modification constitutes a major modification.
The proper protocol for such a change entails a formal application with supporting
documentation (such as the 1/10/920 CRW submittal) and $400 processing fee. Since you
will be relocating your discharge to a positive -flow stream, it is probable that you will have
Tess stringent limitations than the 5/2 (BOD/NH3) currently assigned effective 7/1/93. I
will retain the aforementioned submittal for 60 days in anticipation of receipt of the requested
additional information. After sixty days, I will return it as incomplete.
If y,ou have any questions on this matter, you can reach me at 919/733-5083. Yours truly,
Jul �hanklin, Environmentalnmental Engineer
col5ies TSB - Jackie Nowell
ARO - Paul White
Permit File - Coleen Sullins
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

��-- 41--- O. /S"m,.
arcs y as/3 12" po
6. 5:e5' vi 7 c 6/.1;
S.79 A - O, o. 3 7 S C1 / 11(Z-
6 L
3 09 z. = 6 . / 7 ,�� a. 7s
/ 7Q-
C571 = v/9 z. a 76 c..6
sf s Z( /D - (6, A)(437s } z D, 6S6 c6 ti v. oG°c
cs-6 w.7 /ts (a, iS (0, )r a D Ts—c„6. ^' a, oa'.af
F- �_ 312.. 6). /.s' ( u, 7S- _ 6. // tA
o, ism, ,

linville ridge development
AMMONIA
7Q10: 0.0600
NH3 Effl. Conc:
AL (1/1.8 mg/1) :
Upstream NH3 Conc.:
Design Flow:
Predicted NH3 Downstream:
NH3 Limit:
9.9000
1000.00
220.0000
0.0150
2923.42
2.923423
3012.903
3.012903
AMMONIA
7Q10: 0.0800
NH3 Effl. Conc: 9.9000
AL (1/1.8 mg/1) :
Upstream NH3 Conc.:
Design Flow:
Predicted NH3 Downstream:
NH3 Limit:
1800.00
220.0000
0.0150
2399.76
2.399757
7236.559
7.236559
ANALYSIS
cfs
mg/1
ug/1
ug/1
MGD
ug/1
mg/1
ug/1
mg/1
ANALYSIS (WINTER)
cfs
mg/1
ug/1
ug/1
MGD
ug/1
mg/1
ug/1
mg/1

linville ridge development
CHLORINE
7Q10:
CL2 Effl. Conc:
AL (17/19 ug/1) :
Upstream CL2 Conc.:
Design Flow:
Predicted CL2 Downstream:
CL2 Limit:
0.0600
9.9000
17.0000
0.0000
0.0150
2764.86
2.764864
60.87096
0.060870
ANALYSIS
cfs
mg/1
ug/1
ug/1
MGD
ug/1
mg/1
ug/1
mg/1

t
SUMMER
MODEL RESULTS
Discharger : LINVILLE RIDGE DEVELOPMENT
Receiving Stream : UT WF LINVILLE RIVER
The End D.O. is 8.05 mg/l.
The End CBOD is 9.93 mg/1.
The End NBOD is 3.40 mg/1.
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
Segment 1 7.04 0.00 1
Reach 1 45.00 13.50 6.00 0.01500

1
*** MODEL SUMMARY DATA ***
Discharger : LINVILLE RIDGE DEVELOPMENTSubbasin : 030830
Receiving Stream : UT WF LINVILLE RIVER Stream Class: C TROUT
Summer 7Q10 : 0.06 Winter 7Q10 : 0.08
Design Temperature: 25.0
ILENGTHI SLOPE' VELOCITY 1 DEPTHI Kd 1 Kd I Ka 1 Ka I KN 1
1 mile I ft/mil fps 1 ft 'design' @204 'design' @201/2 Idesignl
1 1 1 1 1 1 1 1 1
Segment 1 1 1.001450.001 0.162 1 0.19 1 0.91 1 0.72 155.75 1 50.001 0.73 I
Reach i 1 1 I 1 1 I 1 1 1
1 Flow I CBOD 1 NBOD 1 D.O. 1
1 cfs I mg/1 1 mg/1 1 mg/1 I
Segment 1 Reach 1
Waste 1 0.023 1 45.000 1 13.500 1 6.000
Headwaters) 0.060 1 2.000 1 1.000 1 7.440
Tributary 1 0.000 1 2.000 1 1.000 I 7.440
* Runoff I 0.000 I 2.000 1 1.000 I 7.440
* Runoff flow is in cfs/mile

P
SUMMER
I Seg VI Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I
1 1 0.00 7.04 14.01 4.49 0.08
1 1 0.10 7.86 13.54 4.37 0.08
1 1 0.20 7.97 13.08 4.25 0.08
1 1 0.30 7.99 12.64 4.13 0.08
1 1 0.40 8.00 12.21 4.02 0.08
1 1 0.50 8.01 11.79 3.91 0.08
1 1 0.60 8.02 11.40 3.80 0.08
1 1 0.70 8.03 11.01 3.70 0.08
1 1 0.80 8.04 10.64 3.60 0.08
1 1 0.90 8.04 10.28 3.50 0.08
1 1 1.00 8.05 9.93 3.40 0.08
I Seg # I Reach # I Seg Mi 1 D.O. I CBOD I NBOD I Flow I

DIVISION OF ENVIRONMENTAL MANAGEMENT
March 4, 1992
MEMORANDUM
TO: Dale Overcash
THRU: Ruth Swanek pc -Dos
Carla Sanderson
FROM: Jacquelyn Nowell�(a
SUBJECT: Estimated 7Q10 Flowdat Proposed Discharge Site
Linville Ridge Development Co.
NPDES Permit No. NC0062413
Avery County
The Technical Support Branch has reviewed the letter from the project engineer
of the subject facility and has the following comments.
Our review of the drainage area of the proposed discharge site (Area 2 on the
map) was slightly smaller at 0.15 square miles compared to their measurement of
0.16 square miles. Our estimate of the 7Q10 flow at that site is also 0.06 cfs,
using runoff yields from the USGS station downstream. Assuming that the drainage
area measurements are accurate, these estimates seem to indicate that there is
enough flow in this segment of the UT West Fork Linville River.
A preliminary Level B model was run at the proposed site for the Linville
Development facility at a design capacity of 0.015 MGD. Using a headwater flow of
0.06 cfs, model results indicate the following effluent limits will protect water
quality.
Summer Winter
BOD5 (mg/1) 30 30
NH3-N (mg/1) 3 7
DO (mg/1) nr nr
TSS (mg/1) 30 30
Fecal (/100m1) 200 200
Res. Chlorine (ug/1) 28 28
pH (SU) 6-9 6-9
It should be noted that these limits are preliminary and final limits will be
assigned when a formal permit application is requested.
If there are any additional questions concerning this matter, please contact
me.
cc: Forrest Westall
WLA File

Sue-
J. CRAIG CRANSTON. I'.E.
THOMAS H. ROBERT.SON. P.E.
ELDRIDGE A. WHITEHURST, JR.. P.E.
Cranston, Robertson & Whitehurst, P.C.
ENGINEERS PLANNERS SURVEYORS 016
/QL.
OLD ENGINE COMPANY NO. 1 POST OFFICE BOX 2546 �'.j L�J(
452 ELLIS STREET AUGUSTA. GEORGIA 30903
TELEPHONE [phone].
TELECOPIER [phone]
January 10, 1992
State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street
Raleigh, North Carolina 27611
ATTN: Mr. Dale Overcash, P.E.
149:77!FilltD
)+N 2 3 1992
Subject: NPDES Permit No. NC0062413
Linville Ridge Development Co.
USGS Data and 7Q10 Min. Flow Calculations
Our File No.: 90-268
Gentlemen:
JOHN T. ATTAWAY
C. WAYNE COX
JAMES B. CRANFORD. JR. P.E.
VAUGHN L MAXWELL, III
P. FRANK PURNELL
WAYNE SWANN. LS.
ANDREW R. WIGGERS
ail
•
i
On April 3, 1991, our firm submitted an engineering report
evaluating non -discharge alternatives for Linville Ridge
Development Co. in accordance with Part III, Item D of the NPDES
Permit. The report recommended adding a tertiary filter at the
treatment plant and piping the effluent to a discharge point in the
stream that is greater than or equal to positive 7Q10 minimum flow.
This minimum 7Q10 flow rate has been defined by Ms. Carolyn
McKaskill of your organization as 0.05 cfs.
It is our understanding that since no design calculations were
submitted with the engineering report documenting the proposed
discharge point location as indicated on Figure 2, the State
requested 7Q10 discharge points from the U.S.G.S. We understand
that the U.S.G.S. provided two 7Q10 sites labeled as sites 1 and 2.
Site 1 is the closest to our proposed discharge location. The
site data indicates that the 7Q10 minimum flow at this location is
approximately 0.09 cfs. This site is located some 1750 linear feet
from our proposed location which suggests that the project cost
will almost double. The 7Q10 flow at our proposed discharge
location is 0.06 cfs which is in line with the State requirements.
We respectfully request that you approve our proposed discharge
point location.

Division of Environmental Management
January 10, 1992
Page 2
Attached are the design calculations qualifying our proposed
discharge point location. The design calculations include the
determination of the 7Q10 flow rates at the Linville Ridge property
line and at the proposed discharge point location as indicated on
Figure 2 in the engineering report. Also, the 30Q2 flow is
analyzed on Sheet 3 of 11 in the calculations. Sheet 11 of 11 is
a topographic map of the area and was previously submitted to the
State as Figure 1 in the engineering report. This map indicates
the areas used for the analysis and the proposed discharge point
location. We have also marked the sites suggested by your
organization for your convenience.
We trust that the design calculations and documentation is
complete for your organizational review. However, should you have
any additional questions or comments regarding any aspect of the
Engineering Report or the documentation provided herewith, please
contact us at your earliest convenience.
Sincerely,
CRANSTON, ROBERTSON & WHITEHURST, P.C.
mes B. Cranf g6rd , ., P.E.
oject Engineer

PROJECT TITLE:
Cranston, Robertson & Whitehurst, P.C.
ENGINEERS
PLANNERS
L� Jl LLG �1�v
T T1-- T P Lam► - A ATE A‘`n v ES
WORK DESCRIPTION: 70 10 K 1 N F �O�J
biGIEgtAk,-)E 7Q 10 T Pol-rr
E
�15L1-iALb6 Ptorsg_T
0
SURVEYORS rJOB #
90 - zG
PAGE % OF
COMP. • L
CHECKED: ` r '�
/ / PAGES
DATE: /-30^9/
DATE:_,_,
l�sL���C�f✓ :
Pfe0sp = . (0. A c ,= 3,3 85R---> 0 . s 6.5. Q v Ph.
b&tnE Y C_
Ae64 CO = 9 B. 8 Pfc,= 0. 1(osM
Ae6A ©= 1/9.2 A-c.= o, 195m
Aet4 10k So.7 5. 9 1 s tA
7Qlo Fog.
Z.1
,7A- SAT // oic //
(PRoa).6.6z 3/ 056 S
SEA SMT 5 0` 1L
7e�,u »- 7 Q /o �-'o�e A�`4s lam, C� --tee C C0,0 Q7,_3
7Qt01-3 70)04
7Q 1 o 1_3
2. 1
3,3840,16+0d, 5.9)
7Q10f_3= 1.33c'Fs
,L7TE, AA, JE
7Q icD
7Q10Z_3 74101-3
A L P13. A f- A 3
7R ( 0z_3
0,I(0+0, 1�
1,33
3.38+-o. u. + 0, )9
R1E PofLrj L 1

PROJECT TITLE:
WORK DESCRIPTION:
Cranston, Robertson & Whitehurst, P.C.
ENGINEERS
PLANNERS SURVEYORS JOB #
0 -Ze8
D. 12 cis
PAGE OF / 1 PAGES
COMP. --, 1X- - DATE: / 1 50-9/
CHECKED: 4 DATE - `9.2
bsT6-R_)--e 7p 10 t. No, 10 6e66,-.1 (7 co oz)
� - e6F. 1'1 L:ve_s Z.
7 6t (0z 761 i 01-3
0.1(p
0�) (a, 3)
3.13
•
•
O. Co c:Cs I 0, 0 5 c__`_s (e).
D. 05 c f lis }4t r ►-tv x-.1 r Fe. 7 Q 1 O
��� CAgoLf J R c ►L� w -&(_,

l■..a,11.'11t
PROJECT TITLE:
Cranston, Robertson Sc Whitehurst, P.C.
ENGINEERS PLANNERS SURVEYORS JOB #
0-?log
,--rr A ppves
WORK DESCRIPTION: 30 Q Z F LO
PAGE 3 OF PAGES
COMP. -� C- DATE: / 30 -9
CHECKED: A DATE:
-beregLA 1 N 3� 2. E I-) 67 po - t 5C, w A E ( =
a Q Z o _ 4.3 cfs
F,EA- 3,54 5o. R.\
30 Q Z, 3oQ Z�}-
4E0-
_ 30 Q Z
5 �? 3ts'-
30 2 . ( -7 cis
1
so ?<3ocz1
3o Q 2_3 " 0,33 Z. V7
3. S`f
�. Z5
o,o c`Fs oK