NC0050342_Modification_20180706

Winston-Salem.Forsyth County
City/County
Utilities July 6, 2018
Water.Sewer.Solid Waste Disposal
RECEBVED/®ENR/®WR
Mr. Monti Hassan JUL 6 2018
Environmental Specialist
NC DENR-DWQ-PERCS Water Resources
Manson Meads Complex 1617 MAIL SERVICE CENTER Permitting Section
RALEIGH,NORTH CAROLINA 27699-1617
City of Winston-Salem
27 99 Griffith Road
Winston-Salem,NC 27103
CityLink 311(336.727 8000)
Fax [phone] Subject: Long Term Monitoring Plans Submittal 2018
www ciryofws mg
Dear Mr. Hassan:
City of Winston-Salem's Pretreatment Program has submitted the required Long Term
Monitoring Plans for approval due by August 1, 2018. Changes in the Long Term
Monitoring Plans are as follows:
NPDES Permit#NC0050342 Muddy Creek WWTP
• Detection limit for Silver is 0.001mg/L
NPDES Permit#NC0037834 Archie Elledge WWTP
• Detection level for Cadmium is 0.005 mg/L
• Detection level for Silver is 0.00lmg/L
Thank you. If you have any questions please contact me at 336-397-7621.
Sincerely,/odlt..ea,v,,,_
Joel Freeman/IWC Supervisor
City Council Mayor Allen Joines,Vivian H Burke,Mayor Pro Tempore,Northeast Ward,Denise D Adams,North Ward,Dan Besse,Southwest Ward,Robert C Clark,West Ward,
John C Larson,South Ward,Jeff Maclntosh,Northwest Ward,Derwin L Montgomery,East Ward,James Taylor,Jr,Southeast Ward,City Manager Lee D Gamty
County Commissioners.David R Plyler,Chairman,Don Martin,Vice Chair,Fleming El-Amro,Ted Kaplan,Richard V Linville,Gloria D Whisenhunt,Everette Witherspoon,
County Manager Dudley Watts,Jr
Call 311 or 336-727-8000
City/County Utility Commission:Randall S Tuttle,Chairman,Wesley Curtis,Jr,Vice-Chair,Harold E Day,Tom Griffin,Yvonne H Hines,Duane Long,Paul S McGill,David Neill,
[e-mail] Chris Parker,Jim Ruffin,Donald R Stewart

1
r�,
City of Winston-Salem
Long Term Monitoring Plan
MUDDY CREEK WWTP
,
A. Sampling Points (See Diagram)
1. Influent(prior to mixing with side streams)
Note: All recycle streams are closed during Long Term Monitoring Sampling
2. Effluent(as per NPDES permit)
3. Primary Clarifier Effluent
4. Activated Sludge Basin
5 Anaerobic Digester
6. Sludge to Land Application(not on diagram- site exits at Elledge WWTP)
7. Sills (not on diagram)
8. Uncontrollable (not on diagram)
B. Pollutants of Concern
1. Pollutants permitted or monitored under Muddy's NPDES permit: Flow, CBOD,
TSS,NH3-N, Total N, and Total PO3
2. 40 CFR 503 Pollutants: As, Cd, Cu, Pb, Hg, Mo,Ni, Se,Zn, % solids, sludge to
disposal flow.
3. EPA required: As, Cd, Cr, Cu, CN,Pb, Hg, Mo,Ni, Se, Ag, Zn, BOD, TSS,
NH3-N.
4. Pollutant exceptions: DO,pH, temperature, conductivity, fecal coliform, chronic
toxicity and pollutant scan.
C. Flow
Flow monitoring points are indicated on the attached facility diagram. Flow at the
influent and effluent will be monitored during sampling events. SIU's will be
monitored as per SIU permit. Volume of sludge will be determined for disposal.
D. SIU Monitoring
Significant Industrial User monitoring will be conducted per industrial user permits.
At a minimum all POC's will be monitored once per permitting cycle. If POC's are
detected they will be monitored once per year. Total nitrogen will be substituted with
TKN for plant protection. The Muddy Creek WWTP does not have a total nitrogen
limit, only a monitoring requirement.
1 LTMP REVISED AUGUST 2018

E. Sampling Frequency
Sampling Point Monitoring Frequency
1 —Influent Quarterly on a Weekday
2 -Effluent Quarterly on a Weekday and per NPDES
requirement
3 - Primary Once per six months and all POC metals annually
Clarifier Effluent
4—Activated Once per six months and all POC metals annually
Sludge Basin
5 —Anaerobic Once per six months on a Weekday
Digester
6 - Sludge to Per Sludge Permit and 503 regulations
Disposal
7 - SIU's Per SIU Permit and all POC's at least once per
permitting cycle; if detected, sampling is annual.
8 -Uncontrollable Once per six months and all POC metals once per
year
2 LTMP REVISED AUGUST 2018

r
0
0
00
N
H
��11 ��11 >1 ��11 ��11 ��11 ��11 �1 >I ��11 r< �1 �1 �I �1 �1 ��11 �
k k >< >< >< >< >< >< >< >< >< X X X ✓Y X X
C
�--I
0VD
'
0
aX XX XXX X >< >< >< ><
bA 4=1
M
awe
a)
b x x x x x x X x x x x x x x a
c ;-0 bn bn O .~ 0 bO 0 0
< UVUPLgZZ ZCNU
bA
E3 0 E 0
z ' 0 -0
•E 0 a -d 8 8 i r2 ,x •0 t
v) O O v, o x a, 0 a� o ° .? v
0.i WE- [C ZE-+ Q� UUUa �a Z c) U

G. Detection Level and Sample Method
Pollutant Detection Level Sample Method
(mg/1)
BOD 2 24 hour Composite
TSS 2 24 hour Composite
TKN 0.1 24 hour Composite
NH3 0.1 24 hour Composite
TN 0.1 24 hour Composite
TP 0.01 24 hour Composite
Fluoride 0.1 24 hour Composite
Arsenic 0.005 24 hour Composite
Cadmium 0.002 24 hour Composite
Chromium 0.005 24 hour Composite
Copper 0.002 24 hour Composite
Lead 0.010 24 hour Composite
Manganese 0.005 24 hour Composite
Mercury 0.0002 24 hour Composite
Mercury (LL) 1 ng/1 Method 1631 Grab
Molybdenum 0.005 24 hour Composite
Nickel 0.010 24 hour Composite
Selenium 0.010 24 hour Composite
Silver 0.001 24 hour Composite
Zinc 0.010 24 hour Composite
Cyanide 0.005 Grab
4 LIMP REVISED AUGUST 2018

r'
MUDDY CREEK WWTP
Chlorine Pipeline for
Activated Sludge Addition at Cl2 contact c
1 Basins,ASB Parshall then '�
*C Mixed Liquor Flume, Dechlori- Q-
Outfalls Storm Basins Primary Final n
#316G MLSS, MLVSS Sodium nation, a)
4' + ClarifiersClarifiers Hypo- Sodium =#37 Fecal E
Southfork, SF ** Flow 1 0 3 chlorite Bisulfite Cond `n
Headworks, 2
- -- -i Equiliza- #31 n n #35 © 4 #36 #37 pH CI Yadkin
► Barscreens ____•. 1.-
,Ir 3 ► --► ► ( 0 ► (�►
♦ &Grit tion, Day Influent n 4 PriClar Eff © Effluent _ Effluent River
300 `, Removal Tanks #317G RA/ S
j #311 • #317G
Deyv�iatering Raw Slud.- (#37 002J
#317G WRAS Muddy reek
------------------------------------ -
- -------------------- - Polymer rare
Qagoon _ _________ Thickener
7
Thickener Overflow
/
/
Secondary Primary #318 Thickened Sludge
.. Digester Digesters
Centrate Well from Elledge SDSI 0 •©0
Secondary Transfer
Digested Sludge
Sludge
NPW= NonPotable Water, #36
Blending Tanks at Elledge Lime can be added at#35
Caustic can be added at the head of the ASB
See another tab in this file for more detail on Ferric chloride and dispersant can be added to the SDSI
Blending Tank, Centrifuge, Dryer flows& destinations before pumping to Elledge
Ferric chloride can be added to Primary Clarifiers&
Secondary Clarifiers when MCCIPs project is complete
**Under Construction 090717

The combined outfalls are flow proportioned sample from Kimel, Salem, and South Fork
Lines that are generated in the laboratory.
The South Fork Line contains side streams,therefore; the dryer and dewatering facilities
must not be operating during Long Term Monitoring.
S2 Cyanide and Mercury(LL) samples are grabs samples and may not be conducted on the
same day as other parameters.
G. Detection Level and Sample Method
Pollutant Detection Level Sample Method
(mg/1)
BOD 2 24 hour Composite
TSS 2 24 hour Composite
TKN 0.1 24 hour Composite
NH3 0.1 24 hour Composite
TN 0.1 24 hour Composite
TP 0.01 24 hour Composite
Fluoride 0.1 24 hour Composite
Arsenic 0.005 24 hour Composite
Cadmium 0.005 24 hour Composite
Chromium 0.005 24 hour Composite
Copper 0.002 24 hour Composite
Lead 0.010 24 hour Composite
Manganese 0.005 24 hour Composite
Mercury 0.0002 24 hour Composite
Mercury(LL) 1 ng/1 Method 1631 Grab
Molybdenum 0.005 24 hour Composite
Nickel 0.010 24 hour Composite
Selenium 0.010 24 hour Composite
Silver 0.001 24 hour Composite
Zinc 0.010 24 hour Composite
Cyanide 0.005 _ Grab
4 LIMP REVISED AUGUST 2018

ARCHIE ELLEDGE WWTP
Pretreatm-nt Basins Activated Sludge
Old PB New PB Chlorine
10G-0 10G-N Basins,ASB Contact Dechlori-
Outfalls IPrimary Mixed Liquor Final Chamber, nation,
South Fork, SF Clarifiers #16G MLSS, MLVSS Clarifiers Sodium Sodium
Hypo- Bisulfite,
\ Flow 201D O 3 chlorite Effluent Weir
Headworks, 3NEW 4 #6 #7 Salem
Salem �� Barscreens ___0,. o-#1 O1 2O #3 4NEWW -- © __i
?t
&Grit tion, Day Influent 00 PriClar Eff 6NEW 6 -, Creek
Kimel i f ! Removal Tanks / Effluent
i #17G RAS 4#17G
, 1 #11 R w
z Dewatering It Sludge #17G WRAS,#20 GBT Feed
Lagoons _______________
----- ---------41111310 I, ---------_________1122_Filtrate GBT GBT Polymer
411111110 1 gravity Belt Thickener
0
:T to Lagoons Blending Primary #21 Thickened Sludge
'# Tanks Digesters
1 2
- 44
Transfer © 8
�: Centrate Well (#72+NPW) \ Sludge
To Muddy Lagoon #70 \
\
..x#72 Centrate \
\ NPW= NonPotable Water,#6
Silos \\ Lime can be added at#3, PriClar Eff
01 02 Dryer Centrifuge Cent Polymer \ Caustic can be added to the ASB
Pellets Mix a e#73 Cake#71 From Muddy Digester
SDSI
See another tab in this file for more detail on I
Blending Tank, Centrifuge, Dryer flows & destinations 090717