NC0048429_Wasteload Allocation_19810218

ional Office to Com
Facility Name.
Existing
Proposed
177 Z -=3 / /5 /
\ 1 NPDES WASTE LOAD ALLOCATION
Date: \\\A%\
Permit No : Ncao y'g �Z Pipe No.: County•C(\oc‘`N.
Design Capacity (MGD): ( O 5 Industrial (% of Flow):
Domestic (% of Flow) : \ O c) elo
Receiving Stream: \ \ . "re (4,e\o•*-\04-4,C`c ec Class: C. Sub -Basin: 23 ` 0 4' - ci\-\
Reference USGS Quad: Z Z Z C3 Ni (Please attach) Requestor c-\--oorwe•A S4V eve-•S Regional Office 1\a\��;
(Guideline limitations, if applicable, are to be listed on the back of this form.)
aw
▪ as
E
0
H
cn
CO
.=
s
Design Temp.:
7Q10:_ 0
Drainage Area: 0 ;!. Avg. Streamflow:
Winter 7Q10: 30Q2•
Location of D.O.minimum (miles below outfall) : r7• i /x7 ••(/'12 Slope.'
k -y"
Velocity (fps) : 0. / K1 (base e, per day, 20°C) : _ l 0/( K2 (base e, per day, 20°C) • ' Sow
Effluent
Characteristics
Monthly
Average
Comments
,D)
-5 in-Sie
1— 5
3D m9
6-ea) (0!4 c, i
l000f ifc
n i9
pi
6=6.5
. L)
Original Allocation
Revled Allocation
epared By:
1I
Il
Effluent
Characteristics
Monthly
Average
Comments
Date(s) of Revision(s)
(Please attach previous allocation)
6 1ev/ 02/ /31
R.60
Reviewed By:

Form 11001
/43
WASTE LOAD ALLOCATION APPROVAL FORM
Facility Name: Cedar Village Apartments
County: Chatham Sub -basin: 03-06-04
Regional Office: Raleigh Requestor: Tommy Stevens
Type of Wastewater: Industrial 0
Domestic 100
If industrial, specify type(s) of industry:
Receiving stream: UT Pokeberry Creek
Other stream(s) affected:
Class: C
Class:
7Q10 flow at point of discharge: 0 cfs
30Q2 flow at point of discharge: -
Natural stream drainage area at discharge point: 0.15 sq mi
Recommended Effluent Limitations
Limits are monthly averages. Parameters used to develop the model
are included on the attached form.
BOD5 = 5 mg/1
NH3 = 2 mg/1
DO = 6 mg/1
TSS = 30 mg/1
Fecal Coliform = 1000/100 ml
pH = 6-8.5 (SU)
Qw = .005 MGD
This allocation is:
/ /
Recommended and reviewed by:
Kik
Head, Techncial Services Branch
Reviewed by:
Regional Supervisor
Permits Manager
Approved by:
Division Director
for a proposed facility
for a new (existing) facility
a revision of existing limitations
a confirmation of existing limitations
Date: -2
Date:
Date: 2/d4,/f/
Date: 7 -//. (Pi
Date: .6. ,//

GI//7r7tier7t. -P4VS'fi!�
c ke.
1-/ro = O
GA - y�o
G

.
5C t0-2
dr)
u T X to w
f_ -,05 6o7o
5?o - ,-i 5.0/
o Bch 151.51
m+Gto
•(J5
4- 05 5l 0
/07. 7- /m: L
fi ,a0 00
- . 60 z/50
on Po/cf 1_1. . 4��0
/a
.< -//O
420 -3 9'0
V1�n cA5 1 - (o.,?) .41 (5 ) , +
m Q_
(QA,)
arcs- = lio + O,a = .005 rn.5D)(/,55) - ,00f3 4"
Qaua- n.a
. /al- (.now) (1o.3-)
tj= - 0,0/
(o,a).Zy
V -- /110(11

69 t
t2-(,00e.)(a5)Q
zy
1.� -f- 2:p.1)0,317
T\lJ VQo�Q�M
,..- I \ - ✓
J .,
/,Z
y, o -
' 6
644
-
. 003
---> o /
/, 3
/20J10A /N
tL t-
(5T - O
of+ = 0t 15
il,2,1, = 515
L = r 8
/. 9
,J = . /
. 1
0T— aoo5
0
Oi - Co
0
1) = o, oq
0,0g
Ic'= 30
o
51= 104,E
�?5
l<,= l,al9
8aa"/
1< z 9,48'
a, 2 0 z
eo = n
o
S5 = 5
_5

O3 o&--C(
Ai Carolina NorthDepartment of Natural ♦ Resources &Community Development
James B. Hunt, Jr., Governor Howard N. Lee, Secretary
DIVISION OF ENVIRONMENTAL MANAGEMENT
May 15, 1981
Mr. Jerry Davis
The John McAdams Co., Inc.
P. 0. Box 2896
Chapel Hill, NC 27514
Dear Mr. Davis:
Subject: Effluent Limitations, Cedar Village Apts., Chatham County
We have reviewed the model used to set effluent limitations for Cedar Village
Apartments. The existing limits including the 5 mg/1 BOD5 and 2 mg/1 NH3-N
levels are appropriate for this discharger. The analysis used to set the
limitations is consistent with our knowledge of the receiving streams.
USGS estimates that the 7-day 10-year low flow in the Pokeberry Creek tributary
which receives Cedar Village's wastes is 0 cfs. The drainage area at this point
is 0.15 square miles. Pokeberry Creek 7/10 low flows at the mouth of the UT
and 2 miles downstream are estimated to be 0 cfs as well. USGS has measured
flows on Pokeberry Creek at a station where the drainage area is 12 square
miles. A low flow of 0.04 cfs has been documented at this station.
These data illustrate the limited assimilative capacity available in Pokeberry
Creek. Advanced wastewater treatment is necessary to maintain the 5.0 mg/1
dissolved oxygen standard during critical low flow conditions.
If you have any questions concerning this matter, please contact me.
cc: Stan Taylor
Bill is
g Kerr
Sincerely,
i/ed1)1.,Lt-1/
Forrest R. Westall, Head
Technical Services Branch
P, O. Box 27687 Raleigh, North Carolina 2761 1
An Equal Opportunity Affirmative Action Employer

fig_ oG-0&/
DIVISXON OF ENVIRONMENTAL MANAGEMENT May 6, 1981
Mr. John McAdams
The John McAdams Company, Inc.
P.O. Sox 2896
Chapel Hill, North Carolina 27514
Subject: Effluent Limitations
Cedar Village tents
Chatham County
Dear Mr. McAdams:
This will acknowledge your letter to me of May 4, 1981, relative to the
effluent limitations assigned for the discharge from Cedar Village Apartments.
The NPDES permit was issued April 29, 1981, with limits of SOD at 5 mg/1 and
ammonia at 2 nag/1. A copy of the permit effluent limitations is attached.
Tour request for further consideration of the stream flow and wasteload allocation
is being referred to Mr. Forrest Westhall, head of the branch which calculates
these allocations, for his raview and response. If Mr. Westhall determines
that some diifferent allocation is appropriate for this discharge, the NPDES
would be amended accordingly.
If I may be of further assistance, please advise.
Sincerely yours,
�1i113m C. %!ills, Supervisor
Discharge Permits Unit
oc : Mr. Forrest Westhall
Mr. Ken Schuster
Mr. Harold Williams

TIE JOHN R. McADAMS COMPANY, INC.
CONSULTING ENGINEERS
100 HAYES BUILDING, GLEN LENNOX CENTER, CHAPEL HILL
P.O. BOX 2896, CHAPEL HILL, NORTH CAROLINA 27514
May 4, 1981
Mr. Bill Mills
N.C. Division of Environmental Management
Permits & Engineering Branch
Post Office Box 27687
Raleigh, North Carolina 27611
RE: Cedar Village Discharge Permit Application
Chatham County
OBL 8101
Dear Bill:
[phone]
1pfn
PERMITS AND
ENGINEERING
At the end of January we made application for a discharge permit for a group
of 18 rental houses in Chatham County known as Cedar Village. We have not
received the permit, but you did call us and give us the waste lead alloca-
tions, which include 5 ppm BOD and 2 ppm ammonia. I write you to request for-
mally that these limits be eased, for the reasons stated below.
The present owner of Cedar Village bought the development only about 7 or 8
months ago. The development currently has one very large septic tank and
sand filter, and discharges into a nearby stream. The new owner, Mr. Harold
Williams, at his own volition called the Chatham County Health Department to
check and see if his system was in compliance. The health official informed
Mr. Williams that he would need to contact DEM to get a discharge permit, and
that is when this firm became involved. As you can see, Mr. Williams is very
interested in meeting the regulatory requirements.
Mr. Williams did not build the development or the present treatment system;
the development has been in place for some 5 to 10 years.
The receiving stream is actually the discharge from a lake that is immediate-
ly above the discharge point. This lake is fed by 7 separate springs, and
even in the current warm weather when several lakes and ponds are falling in
level, there is a good strong overflow discharge out of this lake. Perhaps
in computing the wasteload allocations for the receiving stream, the flow -
moderating effect of this lake discharge was not taken into consideration. We
would suggest that in a very high proportion 'of the time there will be a good
source of dilution water in the stream.
To meet the stringent effluent limits that you communicated to us earlier on
the phone, a tertiary wastewater system costing in the neighborhood of $2,000
per house would need to be built. We feel that in this case, because the sit-
uation is existing, because the owner is so very interested in compliance, be-

Mr. Bill Mills
Page Two
May 4, 1981
cause there is a good and fairly steady source of dilution water in the
receiving stream, and because any treatment facilities provided would be
an improvement, the Division of Environmental Management would be justi-
fied in raising the effluent limits somewhat to put the treatment scheme
into the category of secondary treatment. We thank you for your attention
to this matter, and we would be very pleased to discuss this with you fur-
ther.
Sincerely,
THE JOHN R. McADAMS COMPANY, INC.
BY
JO R. Mc DAMS, P.E.
P S IDENT
JRMc:mj
cc: Harold Williams
Ken Schuster