NC0029611_Wasteload Allocation_19960425

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0029611
PERNIITTEE NAME:
FACILITY NAME:
Yadkin County Board of Education
East Bend Elementary School
Facility Status: Existing
Permit Status: Renewal
Major / Minor
Pipe No.: ,001
Design Capacity: 0.005 MGD /0, 00 7 M 6
Domestic (% of Flow): 100 %
Industrial (% of Flow):
Comments:
Relocation of discharge 6000 ft downstream from original relocation
point. Also. an increase in permitted flow 5000 GPD to 7000 GPD.
/'gai v'e.e.
RECEIVING STREAM n-unnamed-tr taw to -I n 1o_CrcclF
Class: C
Sub -Basin: 03-07-02
Reference USGS Quad: C16NE (please attach)
County: Yadkin
Regional Office: Winston-Salem Regional Office
Previous Exp. Date: 11/30/96 Treatment Plant Class:
Classification changes within three miles:
No change within three miles.
Requested by: Mark McIntire Date: 3/1/96
Prepared by: hp,,) fiylij Date: i 23
Reviewed by: Qh Date: ,. ' &
Dt,, 35 rajl1. qw-0,005MO; i75 Pyle. y.,.' - C,a
7
Modeler
Date Rec.
#
RNM
3Iti (,
g-ss
Drainage Area (mi2 ) f' /, Avg. Streamflow (cfs): /1, 6
7Q10 (cfs) f, 6 Winter 7Q10 (cfs) cl 30Q2 (cfs) 33
Toxicity Limits: IWC 0,7 %✓.V- PAcute/Chronic
Instream Monitoring:
Parameters
Upstream Location
Downstream Location
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO ():
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Conductivity:
Temperature (C):
Monthly Average
Summer/ WQ or EL
Winter
0.005
30.0 EL
monitor
monitor
30.0 EL
200 EL
6-9 EL
monitor
monitor
monitor
Monthly Average
Summer/ WQ or EL
Winter
0.007
30.0 EL
monitor
monitor
30.0 EL
200 EL
6-9 EL
28.0 EL
monitor
monitor
Continents:

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Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requester:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
East Bend Elementary School
NC0029611
Domestic - 100%
Existing
Expansion/relocation
Logan Creek
C
03-07-02
Yadkin
Winston-Salem
Mark McIntire
3/1/96
C16NE
Request # 8455
RECEIVED
N.C. n e} . r.)T r_ H N R
APR 0 9 1996
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
* see be
11.6
1.6
w :.,
J
2.9
11.6 -0_-
3.9
0.7% @f 007.D
c.,
ca =;
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
East Bend Elementary School is considering relocating their discharge approximately 6000
ft downstream of the original relocation point. According to the staff report (2/16/96), the original
relocation point was eventually discounted because the county could not obtain the necessary right-
of-ways. The facility also wants an increase in permitted flow from 0.005 MGD to 0.007 MGD.
A modeling analysis indicates that a 0.007 MGD discharge, treated to secondary limits, would
have a minimal impact on Logan Creek. The facility is currently under an SOC.
* Instream flow statistics were calculated based on data from a low flow partial record station
located downstream on Logan Creek.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
a�f ,.�,Lf1 /MRze
£rmf&
Date: ¢/i/9�
Date: 1-1
Date:
RETURN TO TECHNICAL SUPPORT BY:
y7J— Date:
M,Y 0 3

2
Existing Limits *:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (14/1):
Conductivity:
Temperature (C)
CONVENTIONAL PARAMETERS
Monthly Average
Summer Winter
0.005 0.005
16.0 30.0
13.0 monitor
6.0 ** 6.0 **
30.0 30.0
200 200
6-9 6-9
monitor monitor
monitor monitor
monitor monitor
* These limits are for the existing outfall on UT Logan Creek, not for outfall site #4.
** Daily average
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):
Conductivity:
Temperature (C):
Monthly Average
Summer/ WQ or EL
\ me :
' 0.005
30:0
monitor
monitor
30.0 EL
200 EL
6-9 EL
monitor
monitor
monitor
Monthly Average
Summer/ WQ or EL
monitor
monitor
30.0 EL
200 EL
6-9 EL
28.0 EL
monitor
monitor
Limit changes due to:
Modeling analysis indicates that the facility can discharge 0.007 MGD of secondary treated effluent
into Logan Creek without significantly degrading water quality. Per current SOP all expanding
facilities will receive a residual chlorine limit no less stringent than 28.0 ug/L.
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: N/A
Downstream Location: N/A
Parameters: N/A
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 X No
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes No 4
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
Mora coil e4C6k1,4 h in.hi! )eeylori,„kon ut;i wli+.le d1¢r
J p9rmtli an oddea_
Special Instructions or Conditions
Wasteload sent to EPA? (Major) (Y or N)
(If yes, then attach updated evaluation of facility, including toxics spreadsheet, modeling analysis
if modeled at renewal, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

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.• USGS weighted low flow estimate procedure
f
FacilitylEast Bend Elem. Sch. NPDES # ' NC0029611 1 Stream' Lo an Ck.
Region HA10 I NOTE: procedure applies for regions HA3, HA5,
DA_LFPR 26.4 ; sq mile HA9, and HA10, else see flow SOP
3002_LFPR 8.2 Ids
DA_new 11.6 i sq mile
MAR 1 i cfs/sq mile
QA_eq 11.60 cfs
STEP 1 calculate drainage area ratio
RATIO = new drainage area
drainage area at gage
IF 0.25 < RATIO < 4, CONTINUE to STEP 2, ELSE too far from gage
OK, do STEP 2 now!
STEP 2 determine weight of gage (weight_LFPR)
A. RATIO < 1 B. RATIO > 1
weight ratio weight ratio
_ 0 1 0 1
0.25 0.44 iCaa-1.-1 see A
1 0.25 1 4
weight =
0.25
STEP 3 calculate 30Q2_EQ using regional equation
HA3
HA5
HA9
HA10
7.91
2.42
2.42
3.99
cfs
cfs
cfs
cfs
30Q2_EQ =
STEP 4 calculate 30Q2 yield using weighted equation
3.99
cfs/sq mile
30Q2yield = [weight_LFPR * 30Q2_LFPR] + [weight_EQ * 30Q2_EQ]
DA_LFPR DA_new
yield = 0.08 + 0.26
STEP 5 calculate 30Q2
30Q2 = 30Q2yield * DA_new
30Q2 =
3.89
cfs
0.34
0 _43939394i
cfs/sq mile

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6,4 7
USGS weighted low flow estimate procedure
Facility[East Bend Elem. Sch. NPDES # LNC0029611 j Stream1Lo9an.Ck_ _]
Region
DA_LFPR
s7Q10_LFPR
DA_new
MAR
QA_eq
STEP 1
HA10
26.4
sq mile
2.1 cfs
17.5
17.50
sq mile
cfs/sq mile
cfs
calculate drainage area ratio
NOTE: procedure applies for regions HA3, HA5,
HA9, and HA10, else see flow SOP
RATIO = new drainage area
drainage area at gage
IF 0.25 < RATIO < 4, CONTINUE to STEP 2, ELSE too far from gage
OK, do STEP 2 now!
STEP 2 determine weight of gage (weight_LFPR)
A. RATIO < 1 B. RATIO > 1
weight ratio weight ratio
0 1 0 1
f—i\TAIIITE1-1 see A
1 0.25 1 4
[.._..-0.55 .._..1 0.66 I
weight =
0.55
STEP 3 calculate 7Q10_EQ using regional equation
HA3
HA5
HA9
HA10
5.51
0.89
0.89
2.79
cfs
cfs
cfs
cfs
7Q10 EQ=
STEP 4 calculate 7Q10 yield using weighted equation
2.79
7Q10yield = [weight_LFPR * 7Q10_LFPR] + [weight_EQ * 7Q1 0_EQ]
cfs
= I 0 66287879j
DA_LFPR DA_new
yield = 0.04
STEP 5 calculate s7Q10
7Q10 = 7Q10yield * DA_new
summer 7Q10 =
2.02
cfs
+
0.07 = L 0.12 cfs/sq mile

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USGS weighted low flow estimate procedure
FacilityjEast Bend Elem. Sch. NPDES # ?NC0029611 Stream`:Loan Ck:_ _
Region
DA_LFPR
w7Q10_LFPR
DA_new
MAR
QA_eq
HA10
26.4
6.7
17.5
1
17.50
sq mile
cfs
sq mile
cfs/sq mile
cfs
STEP 1 calculate drainage area ratio
NOTE: procedure applies for regions HA3, HA5,
HA9, and HA10, else see flow SOP
RATIO = new drainage area
drainage area at gage
IF 0.25 < RATIO < 4, CONTINUE to STEP 2, ELSE too far from gage
OK, do STEP 2 now!
STEP 2 determine weight of gage (weight_LFPR)
A. RATIO < 1 B. RATIO > 1
weight ratio weight ratio
0 1 0 1
IV AITIEF I see A
1 0.25 1 4
r.._..-0.55 .._..1 0.66
STEP 3
HA3
HA5
HA9
HA10
STEP 4
weight =
0.55
calculate 7010_EQ using regional equation
10.37
2.59
2.59
4.29
cfs
cfs
cfs
cfs
7Q10 EQ =
calculate 7Q10 yield using weighted equation
4.29
cfs/sq mile
7Q10yield = [weight_LFPR * 7Q10_LFPR] + [weight_EQ * 7Q10_EQ]
DA_LFPR DA_new
yield = 0.14 + 0.11
STEP 5 calculate w7Q10
7Q10 = 7Q10yield * DA_new
winter 7Q10 =
4.37
cfs
1 0 662878791
0.25
cfs/mile

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USGS weighted low flow estimate procedure
Facility[East Bend Elem. Sch. NPDES #
Region
DA_LFPR
30Q2_LFPR
DA_new
MAR
QA_eq
HA10
26.4
sq mile
8.2 ids
17.5
1
17.50
sq mile
cfs/sq mile
cfs
STEP 1 calculate drainage area ratio
NC00296111
Stream'Lo9an Ck:_ _j
NOTE: procedure applies for regions HA3, HA5,
HA9, and HA10, else see flow SOP
RATIO = new drainage area
drainage area at gage
IF 0.25 < RATIO < 4, CONTINUE to STEP 2, ELSE too far from gage
OK, do STEP 2 now!
STEP 2 determine weight of gage (weight_LFPR)
A. RATIO < 1 B. RATIO > 1
weight ratio weight ratio
0 1 0 1
I #VALUE! see A
1 0.25 1 4
F 0.55 1 0.66
STEP 3
HA3
HA5
HA9
HA10
weight =
0.55
calculate 30Q2_EQ using regional equation
11.50
3.40
3.40
6.02
cfs
cfs
cfs
cfs
30Q2_EQ =
STEP 4 calculate 30Q2 yield using weighted equation
6.02
cfs/sq mile
30Q2yield = [weight_LFPR * 30Q2_LFPR] + [weight_EQ * 30Q2_EQ]
DA_LFPR DA_new
yield = 0.17 + 0.15
STEP 5 calculate 30Q2
30Q2 = 30Q2yield * DA_new
30Q2 =
5.70
cfs
0.33
0_66287879j
cfs/sq mile

East Bend Elementary School
Logan Creek
NC0029611 Qw=0.007 MGD
Residual Chlorine
7010 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (UG/L)
IWC (%)
Allowable Concentration (ug/l)
Fecal Limit
Ratio of 148.47 :1
Ammonia as NH3
(summer)
1.6 S7Q10 (CFS) 1.6
0.007 DESIGN FLOW (MGD) 0.007
0.01085 DESIGN FLOW (CFS) 0.01085
17.0 STREAM STD (MG/L) 1.0
0 UPS BACKGROUND LEVEL (MG/L) 0.22
0.67 % IWC (%) 0.7 %
2524 Allowable Concentration (mg/I) 116.02
NBOD (mg/I) = 522.10
Ammonia as NH3
(winter)
W7Q10 (CFS)
200/l0oml DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
Allowable Concentration (mg/I)
2.9
0.007
0.01085
1.8
0.22
0.4 %
424.10
NBOD (mg/I) = 1908.47
4/1/96

East Bend Elementary School
Logan Creek
NC0029611 Qw=0.005 MGD
Residual Chlorine
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (UG/L)
IWC (%)
Allowable Concentration (ug/I)
Fecal Limit
Ratio of 207.45 :1
1.6
0.005
0.00775
17.0
0
0.48 %
3527
Ammonia as NH3
(summer)
S7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
Allowable Concentration (mg/I)
Ammonia as NH3
(winter)
1.6
0.005
0.00775
1.0
0.22
0.5 %
162.03
NBOD (mg/I) = 729.15
W7Q10 (CFS)
200/100m1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
2.9
0.005
0.00775
1.8
0.22
0.3 %
Allowable Concentration (mg/I) 593.03
NBOD (mg/I) = 2668.62
4/1/96

4/1/96
AHM
Facility name: ast Bend Elem
Dist Cum. Dist. Elevation Slope
0 0.00 820 Leave blank!
0.85 0.85 800 23.53
1.2 2.05 780 16.67
1.3 3.35 760 15.38
1.35 4.70 740 14.81
790
eo
780
W 770
Slope for East Bend Elem. Sch. Mod
Cumulative Distance (m
)v3 Flo =(oo-7o')Bq it/144,-i
(47,- o?5►

GENERAL INFORMATION
Facility Name: -71- kni,67e$14 .
NPDES No.: AJCOOZ 96' //
Type of Waste: ffl hm,
Facility Status: tOt ,k,t,/otan0).„
Receiving Stream: /0a4,1 (4_,
Stream C1assificatiort C,--
Subbasin: 03- g 7 _ 02
County: yoicik‘fr,
Regional Office: t/////),/•- .,4 h.41,1
Topo Quad: (*/ e_r
FLOW INFORMATION
USGS #
Date of Flow Estimates:
Drainage Area (mi2): /7(,,
Summer 7Q10 (cfs): /,
Winter 7Q10 (cfs): Z. ,
Average Flow (cfs): // 6
30Q2 (cfs): 3, 7
,
IWC at Point of Discharge (%): g 7
Cummu]ative IWC (%):
MODEL INPUT INFORMATION
gi 5 7
g 2/5/
LENGTH OF REACH (miles)
6,35
3, 6,-
INCREIvEENTAL LENGTH (miles)
0. 0 5-
0, /
WASTE CHARACTERISTICS
FLOW (MGD)
0,007
CBOD (mg/1)
NBOD (mg/1)
\
D.O. (mg/1)
,
RUNOFF CHARACTERISTICS
7Q10 (cfs/mi2) _
Z /0
(7, /0
QA (cfs/mi2)
CBOD (mg/I)
Pei„,„4(
NBOD (mg/I)
1444
D.O. (mg/1)
TRIBUTARY CHARACTERISTICS
7Q10 (cfs)
QA (cfs)
CBOD (mg/1)
mg/1)
NBOD (D.O.
\\
(mg/1)
SLOPE (fpm)
Z 3- 5-
/5-:& ,
Name of facility b----61/ Awl 7e'me XI

r
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SUMMER
MODEL RESULTS
Discharger o EAST BEND ELEMENTARY SCHOOL
Receiving Stream x LO8AN CREEK
The End D.O. is 8.08 mg/l.
The End CBOD is 1.46 mg/l.
The End NBOD is 0.81 mg/1.
WLA WLA WLA
D0 Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
Segment 1 7.39 0.00 1
Reach 1 45.00 90.00 0.00 0.00700
Reach 2 0.00 0.00 0"00 0.00000

"
*** MODEL SUMMARY DATA ***
~
Discharger x EAST BEND ELEMENTARY SCHOOLGubbasin : 030702
Receiving Stream : LO8AN CREEK Stream Class: C
Summer 7Q10 : 1.6 Winter 7010 : 2.9
Design Temperature: 25.0
|L[NHTH| GL0PE1 VELOCITY | 0EPTH> Kd > Kd | Ku } Ka | KN | KN } KKR I KKR | SOD | SOD
{ mile ( ft/mi| fps | ft |design| 8200 |deu\gn| W201 |dusign| 3201 |design| 0200 |deoigu| 820
| | | | | | | ! I | | | > !
Segment 1 | 0^351 23.501 0.18B } 0.76 1 0.37 | 0.29 | U,86 | 7.951 0"73 | 0.50 | 0.73 | 0.00 | 0.00 | 0.00
Reach 1 | | | } | | } | i | } / |
i i | | | } I | | ! | | | !
Segment 1 | 3"651 15.601 0.168 | 0.05 | 0.33 | 0.26 } 5.87 > 4.731 0.44 / 0.30 1 0`44 | 0.00 } 0.00 | 0.00
Reach 2 | i | \ | | | | | i 1 | i
} Flow | CBOD ! NBOD i D.O. }
| cfs | mg/l ! mg/l I mg/l |
Segment 1 Reach 1
Waste | 0"011 | 45"000 90.000 / 0.000
Headwaters/ 1"600 | 2.000 1.000 | 7.440
Tributary | 0.000 | 2.000 1.000 1 7.440
* Runoff | 0.100 | 2.000 1.000 | 7"440
Segment 1 Reach 2
Waste | 0.000 | 0.000 | 0.000 | 0.000
Tributary 1 0.000 | 2"000 | 1"000 \ 7.440
* Runoff | 0.100 | 2,000 | 1.000 ) 7.440
* Runoff flow is in cfs/mile

SUMMER
QW=A.007 MGD
| Geg # | Reach # I Geg Mi | D.O. \ CBOD | NBOD | Flow |
1 l 0.00 7.39 2.29 1.60 1.61
1 1 0.05 7.48 2.27 1.58 1"62
1 1 0.10 7.55 2.26 1.56 1.62
1 1 0.15 7.62 2.25 1.54 1.68
1 1 0.20 7.67 2.28 1.52 1.63
1 1 0.25 7.72 2.22 1.50 1.64
1 1 0.30 7.76 2.20 1.4B 1.64
1 1 0.35 7"80 2.19 1.46 1.65
1 2 0.80 7.80 2"19 1.46 1.65
1 2 0.40 7.83 2"16 1.48 1"66
1 2 0.50 7.86 22.14 1.41 1.67
1 2 0.60 7.89 2.11 1"38 1.68
1 2 0.70 7.91 2.09 1.36 1.69
1 2 0.80 7.92 2.06 1.34 1.70
1 2 0.90 7.94 2.04 1.31 1.71
1 2 1.A0 7"95 2"01 1.29 1.72
1 2 1"10 7.96 1.99 1.27 1.73
1 2 1.20 7.97 1.96 1.25 1"74
1 2 1.30 7.98 1.94 1.28 1.75
1 2 1.40 7.99 1"92 1.20 1.76
1 2 1.50 8"00 1.90 1"18 1.77
1 2 1.60 8"00 1.88 1.16 1.78
1 2 1.70 8.01 1.85 1.15 1.79
1 2 1.80 8.01 1"88 1.13 1.80
1 2 1"90 8.02 1.81 1.11 1"81
1 2 2"00 8.02 1.79 1.09 1.82
1 2 2.10 8"08 1"77 1.07 1.83
1 2 2.20 8.03 1.75 1.05 1.84
1 2 2.30 8.08 1.73 1.04 1.85
1 2 2"40 8.04 1.71 1.02 1.86
1 2 2.50 8.04 1.70 1.00 1"87
1 2 2.60 8.04 1.68 0.99 1.88
1 2 2.70 8.05 1"66 0.97 1.89
1 2 2.80 8.05 1.64 0.96 1.90
1 2 2.90 8.05 1.62 0.94 1.91
1 2 8.00 8.05 1.61 0"93 1.92
1 2 3.10 8.06 1.59 0.91 1.98
1 2 3"20 8.06 1"57 0.90 1.94
1 2 3.30 8.06 1.56 0"89 1.95
1 2 3.40 8.06 1.54 0"87 1.96
1 2 3.50 8.07 1"53 0.86 1.97
1 2 3.60 8.07 1"51 0.85 1.98
1 2 8.70 8.07 1.49 0.88 1.99
1 2 8.80 8.07 1.48 0"82 2.00
1 2 3.90 8.08 1"46 0.81 2.01
{ 8eg # ) Reach # | Seg Mi | D.O. { CBOD | NBOD | Flow |

cc:
Permits and Engineering
Technical Support Branch
County Health Dept.
Central Files
WSRO
SOC PRIORITY PROJECT: Yes _X_ No
If Yes, SOC No. WQ 90-34
To: Permits and Engineering Unit
Water Quality Section
Attention: Mark D. McIntire
Date:February 16, 1996
NPDES STAFF REPORT AND RECOMMENDATION
County Yadkin
Permit No. NC0029611
PART I - GENERAL INFORMATION
1. Facility and Address:
East Bend Elementary School
Yadkin County Board of Education
PO Box 129
East Bend, NC 27018
2. Date of Investigation: February 16, 1996
3. Report Prepared by: Danny Hockett
4. Persons Contacted and Telephone Number:
Mark Matthews, 910-679-2233 and Diehl and Phillips,
919-467-5327
5. Directions to Site: Take Hwy 67 to East Bend. Turn left on
Flint Hill Rd. School is on right just off Hwy 67.
6. Discharge Points(s), List for all discharge points:
Latitude: 36° 10' 52" Longitude: 80° 32' 15"
U.S.G.S. Quad No. C-16 NE U.S.G.S. Quad Name East Bend
7. Site size and expansion area consistent with application?
X Yes No If No, explain:
8. Topography (relationship to flood plain included):
The system itself is well above any flood plain.
9. Location of nearest dwelling: There are dwellings within
1000' of the system.
10 Receiving stream or affected surface waters:
UST 6. Pr 0!(enu-

a. Classification: Class C
b. River Basin and Subbasin No.: 03-07-02
c. Describe receiving stream features and pertinent
downstream uses: The UT flows through rural area for
about 1 mile before entering Logan Creek.
Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: 0.007 MGD
(Ultimate Design Capacity)
b. What is the current permitted capacity of the Waste
Water Treatment facility? 0.005 MGD
c. Actual treatment capacity of the current facility
(current design capacity)? 0.01 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years. NA
e. Please provide a description of existing or
substantially constructed wastewater treatment
facilities. The current facility consists of a septic
tank, dosing tank, surface sand filter and
chlorination.
f. Please provide a description of proposed wastewater
treatment facilities. It is proposed to relocate the
discharge.
g-
Possible toxic impacts to surface waters: None known
h. Pretreatment Program (POTWs only):
in development approved
should be required not needed
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM
Permit No.
Residuals Contractor
Telephone No.
b. Residuals stabilization: PSRP PFRP
Other
NPDES Permit Staff Report
Version 10/92
Page 2

t
c. Landfill:
d. Other disposal/utilization scheme (Specify):
Septic tank is pumped when necessary
3. Treatment plant classification (attach completed rating
sheet) .
4. SIC Code(s) : 8 211
Primary 03 Secondary
Main Treatment Unit Code: 4 4 0 _ 7
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved. (municipals only)?
NA
2. Special monitoring or limitations (including toxicity)
requests: None
3. Important SOC, JOC or Compliance 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:
Connection to Regional Sewer System:
Subsurface:
Other disposal options:
5. Other Special Items:
PART IV - EVALUATION AND RECOMMENDATIONS
Yadkin County Schools need to relocate the discharge
point from a zero flow creek. The originally decided
on new discharge point has been ruled out because the
county could not obtain necessary right-of-ways.
Therefore, they propose to discharge further
downstream. WSRO has no objections to the newly
NPDES Permit Staff Report
Version 10/92
Page 3

proposed discharge point over the originally proposed
discharge point. Technical services can better address
the request for increased flow from 5000 GPD to 7000
GPD. However, WSRO has no objections to this request.
Signature of reptt preparer
Water Quality Regions/ Supervisor
2
Date
NPDES Permit Staff Report
Version 10/92
Page 4

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