NC0040266_Wasteload Allocation_19840428

NPDES DOCYNENT SCANNING COVER SHEET
NPDES Permit:
NC0040266
Knightdale Estates WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Technical Correction
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
April 28, 1984
This document is printed on reuse paper - ignore any
content on the resrerme side

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0040266
PERMITTEE NAME: Knightdale Estates, Inc.
FACILITY NAME: Knightdale Estates Mobile Home Park
Facility Status: Existing
Permit Status: Renewal
Major Minor '1
Pipe No.: 001
Design Capacity: 0.025 MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow): 0 %
Comments:
RECEIVING STREAM: an unnamed tributary to the Neuse River
Class: C-NSW
Sub -Basin: 03-04-02
Reference USGS Quad: D24SE, Raleigh East
County: Wake
Regional Office: Raleigh Regional Office
(please attach)
Previous Exp. Date: 9/30/94 Treatment Plant Class:
Classification changes within three miles:
Requested by: Jay Lijcas
Prepared by:
Reviewed by: (1441b.
6�•'T!6
c,O E L. wQ !EA-
lAgerYL_
Date: 2/25/94
Date: '� L
Date: 4
02 k/i y .
i
Modeler
Date Rec.
#
'11.--
z(z8k k-{,
TI to z..
Drainage Area (mi2 ) 1. ct
Avg. Streamflow (cfs): z .1
7Q10 (cfs) o. 19 Winter 7Q10 (cfs) a.ya 30Q2 (cfs) o. 6
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters Iv_n+am.Arr . Tn_vc,o oxYc e+v, i cn•i, cou " e o apucrtth.i.,i
Upstream ✓ Location 5 ' 10b1700,, arnfA 11
Downstream ✓ Location z_pi, • 60.ra,, st4n ►1
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
2.3- -a
30
NH3-N (mg/1)
y.8
ma+vro2-
D.O. (mg/1)
6-• o
cs•V
TSS (mg/1)
3 0
3 v
F. Col. (/100 ml)
Z v
o
pH (SU)
G _ 1
G - 9
Rt3 IA0 AL
CGnt,O&i iE- (A/4-J
monwr at
0 n) it 02
Comments:

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
e (2(
FACT SHEET FOR WASTELOAD ALLOCATION<11,1
Request # 7620/9 /
r.Rq4 "PO
Knightdale Estates
NC0040266
Domestic - 100%
Existing
Renewal
unnamed tributary to Neuse River
C-NSW
03-04-02
Wake
Raleigh
Lucas
2/28/94
D23SE
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
02.0873.8595
1989
1.95
0.19
0.49
2.1
0.61
17.0 %
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
New ammonia toxicity criteria requires more stringent limits. Request comment from Region
as to facility's choice between new limit or Toxicity Test.
Facility has a record of flow exceedences and fecal coliform violations. Residual chlorine
levels are very excessive. Central Files contain many letters for NOV's as well as Compliance
Inspection letters indicating ongoing problems with facility maintnenance.
No current Staff Report available for this WLA. Request Region comment as to availability of
municipal connection.
Request Region check into facility's instream monitoring techniques and locations, especially
conductivity.
Note new fecal coliform limit.
Special Schedule Requirements
c.L) ( o/c
d additional comments from Reviewers:
Recommended by:
Farrell Keough
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
RETURN TO TECHNICAL 4 BY: Y
Date: s Ape<<_ 149-,
Date: -4(m471
ate: i/A1--3
Date:
i, )c c j

Existing Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Temperature (°C):
TP (mg/1):
TN (mg/1):
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (1.tg/1):
Temperature (°C):
TP (mg/1):
TN (mg/1):
2
PARAMETERS
Monthly Average
0.025
27.0
16.0
5.0
30
1,000
6-9
monitor
monitor
nr
nr
Monthly Average with
Toxicity Test
0.025
27.0
16.0
5.0
30
200
6-9
monitor
monitor
nr
nr
7%
WQ
WQ
Monthly Average with
Ammonia limit
WQ or EL Summer Winter
0.025
770 ,, 30.0
4.8 ) monitor
5.0
30
200
6-9
monitor
monitor
nr
nr
30
200
6-9
monitor
monitor
nr
nr
WQ
WQ
WQ
Facility should recieve choice between Chronic Toxicity testing OR Ammonia limit. Region
should TSB of facilities decision.
Limits Changes:
Fecal Coliform and ammonia
new standards and toxicity criteria
x Parameter(s) are water quality limited. For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent limitations for additional dischargers within this portion of the watershed.
OR
No parameters are water quality limited, but this discharge may affect future allocations.

3
INSTREAM MONITORING REQUIREMENTS
Upstream Location: 50' above outfall
Downstream Location: 200' below outfall
Parameters: Temperature, dissolved oxygen, fecal coliform, conductivity
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No > ,, r
If no, which parameters cannot be met? �l% ,`+'7 �-�' V
Would a "phasing in" of the new limits be appropriate? Yes No ?�
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not? //
c a�
Special Instructions or Conditions
Wasteload sent to EPA? (Major) _N_ (Y or N)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old
assumptions that were made, and description of how it fits into basinwide plan)
Additional Information attached? _N (Y or N) If yes, explain with attachments.

Facility Name:
Permit Number:
Engineer:
Subbasin:
Receiving Stream:
USGS quad #:
Request Number:
Date:
Expiration date:
Knightdale Estates
NC0040266
Lucas
03-04-02
unnamed tributary to the Neuse River
D24SE
7762
2/28/94
9/30/94
Existing WLA checked:
Staff Report:
Topo checked:
USGS Flows confirmed:
PIRF / APAMS:
IWC Spreadsheet:
Stream Classification:
Nutrient Sensitivity:
Instream Data:
Brief of WLA Analysis
Previous WLA's
1977: first modeled in this year with limits of 30 / 30. Model run with 0.1 cfs 7Q10 at that time.
1982: name changed from Bullucks MHP to Knightdale Estates. Re -issued with same limits.
1983: new WLA contained expanded limits of 0.02, 0.025, and 0.03 mgd, (from 0.0125 mgd). each of these expanded
flows required more stringent NH3-N treatment while only slightly more stringent BOD5 removal.
1984: facility re -issued with 30 / 30 limits for their previous flow of 0.0125 mgd.
1989: expansion of facility to 0.025 mgd. new USGS flows were requested, (they ended up being higher) and the
expansion was modeled with limits of 27 / 16 / 5. instream monitoring was also required at that time.
No Staff Report has been submitted for this facility, but the Waste Load Allocation request has been in- house for over a
month. Therefore I will go ahead with mailing out the Fact Sheet based on the information I have received. I will request
Region input on the front of the Fact Sheet.
**new ammonia toxicity criteria require limits of 4.8 / 21.7 mg/I d"`^ 1.1 PXl. pAy
DMR's
Many flow and fecal coliform violations, as well as very high residual chlorine levels.
Central Files
This facility has a very poor track record. Many NOV's and Compliance Inspection Letters indicate that ongoing problems
are not being attending to.

Knlghtdale Estates Mobile Home Park NC0040266
Upstream: 50' upstream
Month Temp DO
Saturation Fecal Conductivity
Deo-93
Nov-93
Oct 93
Sep-93
Aug-93
Jul-93
Jun-93
May-93
Apr-93
Mar-93
Feb-93
Jan-93
9
11
16
21
24
26
24
20
11
12
7
9
9.1
7.3
6.6
6.9
7.4
7.5
7.1
8.2
7.5
9.0
10.9
8.7
78%
66%
67%
77%
88%
92%
84%
90%
68%
84%
89%
75%
87.7
34.6
122.5
107.2
220
434.7
120.5
357
320
50.9
71
73.5
92
98
85
78
70
80
60
72.5
60
62.5
70
72.5
Downstream: 50' downstream
Temp DO
Saturation Fecal Conductivity
10
12
17
23
23
26
24
20
10
13
9
9
8.8
7.5
6.4
6.2
6.8
6.7
7.4
8.3
9.7
8.9
10.5
9.7
78%
70%
66%
72%
79%
83%
88%
91%
86%
85%
91%
84%
77.5
54.7
179.7
1090.9
10
480
124
264.9
184
104.9
85.4
69.7
85
10
11
163
90
70
62.5
62.5
63
57.5
58
72.5
conductivity values have been assumed to be three decimal places off. thus 0.09 would equal 90
Ammonia [2 / 4 mg/I] - Residual Chlorine - Fecal Coliform
Instream Waste Concentrations
Residual Chlorine
7010 (cfs)
Design Flow (mgd)
Design Flow (ds)
Stream Std (Nil)
Upstream bkgrd level (µg/1)
IWC (%)
Allowable Concentration (pg/i)
Allowable Concentration (mg/l)
Fecal Limit
Ratio of 5.2 :1
0.►9
0.025
0.039
17
0
raj" t4.off
404:2" 9 9.8
0.104
200/100m1
o. 19
0.025
0.039
1
0.22
I4.d6t6:290
r
`i•8
0-49 -0:6-
0.025
0.039
1.8
0.22
Ammonia as NH3
(summer)
7010 (cfs)
Design Flow (mgd)
Design Flow (cfs)
Stream Std (mg/I)
Upstream bkgrd level (mg/I)
IWC (%)
Allowable Concentration (mg/1)
Ammonia as NH3
(winter)
7010 (cfs)
Design Flow (mgd)
Design Flow (cfs)
Stream Std (mg/I)
Upstream bkgrd level (mg/I)
IWC (%)
Allowable Concentration (mg/i)
9

APR 7 tt
raffia& SUPPORT
N c-
SOC PRIORITY PROJECT: Yes__No
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention:
Date 3
NPDES STAFF REPORT A D RECOMM,NDATION
County (•f ; �_,,,rq�,.
Permit No. NC dty0� AA r" ?'-
PART I - GENERAL INFORMATION
1. FaciIity and Address:
2. Date of Investigation' 3r`lipy
3. Report Prepared by:
ps/ Ram
4. Persons Contacted and Telephone rr..__L__
�
_Avid ✓a.r (0x0
�s�-dsr3s
5. Directions to Site: 6 (4JGQ# 4pJ.
Pare— Re). and pr� Q (zi)j
A c i l c 71"
S Qk-
6. Discharge Point(s), List for all discharge points: y r;
Latitude: 3s- ys, /�7 Longitude: 7ro,'24
Attach a USGS map extract and indicate treatment facility site and discharge
point on map.
U.S.G.S. Quad No. pay rF U.S.G.S. Quad Name e '
7. Site s e and expansion area consistent with application ?
Yes No If No, explain:
8. Topography (relationship to flood plain included): G ° s Lt7e

9. Location of nearest dwelling: Zoo
10. Receiving stream or affected surface waters: (J-r- yt /VQ,tcQ R.i ✓eT
a. Classification: G N 4J
b. River Basin and Subbasin No.: Q 3: a = 0
c. Describe receiving stream features and pertinent
downstream uses:
PART II DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: �Z� MGD(Ultimate Design
Capacity)
b. What is the current permitted capacity of the Waste Water Treatment
facility? d. p�c—rh (r7)
c. Actual treatment capacity of the current facility (current design
capacity)? 0 . ao. pi g-p
d. Date(s) and construction activities allowed by previous Authorizations
to Construct issued in the previous two years:
e. PIease provide a description of existing or substantially constructed
f
wastewater t�reatr ent fac_iliities: 5x� � ,%�!//�,"�- /;sL�rnO'fex-hr, a-e-raf'ax -iKa.t car �. iGaciak, art,avr Gl. 1 1 GQcc7 +
f. Pleaseprovide a descri tYon of proposedGcf<
p w stewater treatment
facilities:
g. Possible toxic impacts to surface waters: e't`^
h. Pretreatment Program (POTWs only):
in development approved
should be required not needed
2. Residuals handling and utilization/disposal scheme: Ga.HJ
a. If residuals are being land applied, please specify DEM permit no.
04004Pie-✓irwsib a14-40 k ).50411 XaS
vo;d�4/ con.7frc.
NPDES Permit Staff Report
Version 10/92
Page 2

frjioaJy
Wag ce., WSdf
Residuals Contractor or_,q ,s SV'U1Ge,
Telephone No.
b. Residuals stabilization: PSRP PFRP
c. Landfill:
d. Other disposal/utilization scheme (Specify):
3. Treatment plant classification (attach completed rating sheet):
4. SIC Code(s): 6 Ste/ S
Other
Wastewater Code(s) of actual wastewater, not particular facilities i.e.., non -
contact cooling water discharge from a metal plating company would be 14,
not 56.
Primary 61 Secondary
Main Treatment Unit Code: 11= 0 —:_.(23
PART III - OTHER PERTINENT INFORMATION
I. Is this facility being constructed with Construction Grant Funds or are any
public monies involved. (municipals only)? ---�
2. Special monitoring or limitations (including toxicity) requests:
Rec&1I*ehl S8ODA AM5i G! V
6 i G47y v o w
row f ,0 up
3. Im ortant SOC OC r s3 -f o
p , j o ompliance Schedule dates: Please indicate)
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
4. Alternative Analysis Evaluation: Has the facility evaluated all of the non -
discharge options available. Please provide regional perspective for each
option evaluated.
Spray Irrigation: A
Connection to Regional Sewer System:
410e-r- rKa be. away �01�
y / e. /_ �. kelevoCe �.s,)
y
Subsurface:
NPDES Permit Staff Report
version 10/92
e.)41//).4.
No eri?"61.--
Page 3

• t
Other disposal of ns:
5. Other Special lien-.
PART IV - •EVAL ATIC i AND RECOMMENDATIONS
saev ..d 2-NN3 a.,a;42.eaviu.wAtid R
144"1; 4- s c✓ 700 6• 0 cv sc� . Del /
te4'4"4,4f-‘44;g•-- 14)A.;c_4.
eile,fre,
covet, -
re-rostkcierk_.-
4244.46.e., fe4mtivr
Signature o
port preparer
/.*r
Water Quality Regi
Date
NPDES Permit Staff Report
Version 10/92
��,.... SC...-
it . ,
S e ; / -fa cud
ervisor
Pagc 4

•
7000 FEET
1 KILOMETER
722 32'30"
1 MILE
724 • • INTERIOR —GEOLOGICAL SURVEY. RESTON. VIRGINiA-1987
725000m E.
ROAD CLASSIFICATION
Primary highway,
hard surface........ improved surface
Light•duty road, hard or
78° 30'
Secondary highway,
hard surface . Unimproved road ---
a
II C. fl....$.. C+..e" Pn,,ln
sc