NC0024872_Permit Issuance_19940729

NPDES DOCUHENT !CANNINO COVER :MEET
NC0024872
Cooleemee WWTP
NPDES Permit:
Document Type: *.Permit
Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
201 Facilities Plan
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
July 29, 1994
This document is priated on reuse paper - ignore any
content on the rezrerse *ado

State cf- North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Bruce Pratt
P.O. Box 1045
Mocksville, NC 27028
Dear Mr. Pratt:
TicirrA
E) Et --I N Ft.
July 29, 1994
Subject: Permit No. NC0024872
Town of Cooleemee
Davie County
In accordance with your application for discharge permit received on December 2, 1993,
we are forwarding herewith the subject state - NPDES permit. This permit is issued pursuant
to the requirements of North Carolina General Statute 143-215 .1 and the Memorandum of
Agreement between North Carolina and the US Environmental Protection agency dated
December 6, 1983.
If any parts, measurement frequencies or sampling requirements contained in this permit
are unacceptable to you, you have the right to an adjudicatory hearing upon written request
within thirty (30) days following receipt of this letter. This request must be in the form of a
written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, Post Office Drawer 27447, Raleigh, North
Carolina 27611 -7447. Unless such demand is made, this decision shall be final and binding.
Please take notice this permit is not transferable. Part II, E.4. addresses the requirements
to be followed in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be
required by the Division of Environmental Management or permits required by the Division of
Land Resources, Coastal Area Management Act or any other Federal or Local governmental
permit that may be required.
If you have any questions concerning this permit, please contact Ms. Susan Wilson at
telephone number 919/733-5083.
ipQerel
Original Signed By
David A. Goodrich
A. Preston Howard, Jr.
cc: Mr. Jim Patrick, EPA
Winston Salem Regional Office
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Permit No. NC0024872
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
PERMIT,
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1,
other lawful standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Davie County Water System
is hereby authorized to discharge wastewater from a facility located at
Cooleemee Wastewater Treatment Plant
off of NC Highway 801
south of Cooleemee
Davie County
to receiving waters designated as South Yadkin River in the Yadkin -Pee Dee River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, and III hereof.
This permit shall become effective September 1, 1994
This permit and the authorization to discharge shall expire at midnight on July 31, 1999
Signed this day July 29, 1994
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

Permit No. NC0024872
SUPPLEMENT TO PERMIT COVER SHEET
Davie County Water System
is hereby authorized to:
1. Continue to operate the existing wastewater treatment facility consisting of a bar screen, grit
chamber, influent pump station, aeration basin, clarifier, aerobic digester, sludge drying beds,
chlorination, and flow measurement located at Cooleemee Wastewater Treatment Plant, off of
NC Highway 801, south of Cooleemee, Davie County (See Part III of this Permit), and
2. Discharge from said treatment works at the location specified on the attached map into South
Yadkin River which is classified Class C waters in the Yadkin -Pee Dee River Basin.

r
Cooleemee WWTP
Davie County
irrn
NPDES Permit No. NC0024872
USGS Quad No. D-16 SE
USGS Quad Name Cooleemee
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A. ( ). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NC0024872
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
BOD, 5 day, 20°C**
Total Suspended Residue**
NH3 as N
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Chronic Toxicity***
Chlorides
Discharge Limitations
Monthly Avg. Weekly Avg. Daily Max
1.5 MGD
30.0 mg/I 45.0 mg/I
30.0 mg/I 45.0 mg/1
200.0 /100 ml 400.0 /100 ml
* Sample locations: E - Effluent, I - Influent
Monitoring
Measurement
Frequency
Continuous
3/Week
3/Week
Weekly
3/Week
3/Week
Daily
Monthly
Monthly
Quarterly
Quarterly
Requirements
Sample *Sample
Type Location
Recording I or E
Composite E, I
Composite E, I
Composite E
Grab E
Grab E
Grab E
Composite E
Composite E
Composite E
Composite E
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85
% removal).
* * * Chronic Toxicity (Ceriodaphnia) P/F at 2.1%; January, April, July, and October; See Part III, Condition F.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 3/week at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0024872
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. (Continued)
Effluent Characteristics
Cadmium
Discharge Limitations
Units (specify)
Monthly Avg. Weekly Avg.
Daily Max
Monitoring
Measurement
Frequency
2/Month
Requirements
Sample
Type
Composite
*Sample
Location
E

Part III Permit No. NC0024872
G. CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic
Bioassay Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproductt -or_
significant mortality is 2.1 % (defined as treatment two in the North Carolina procedure document).
The permit holder shall perform quarterly monitoring using this procedure to establish compliance
with the permit condition. The first test will be performed after thirty days from the effective date
of this permit during the months of January, April, July, October. Effluent sampling for this
testing shall be performed at the NPDES permitted final effluent discharge below all treatment
processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter
code TGP3B. Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention:
Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual
chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this
monthly test requirement will revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Environmental Management indicate potential impacts to the receiving stream, this
permit may be re -opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test
and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit
suitable test results will constitute noncompliance with monitoring requirements.

DAVIE CO. WINTP - RAW DATA Nov.90 Dec 90 Jan 91 Feb 91 Mar 91 Apr 91 May 91 Jun 91 Jul 91 Aug 91 Sep 91 Oct 91 Nov 91 Dec 91 Jan 92 Feb 92 Mar 92 Apr 92 May 92 Jun 92 Jul 92
Cadt.iliiirii::Upstream....?.::::.,...::::.,.::::„•••:.:•:::•:.•:•.:::::::::i: •••••-•:-::%•• • • -:.:.:.:,:::.:::::::.:::-.•-••::::::::-..i:.:.$:::
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Copper Upstream 0.06 <0.05 <0.05 0.038
Influent 0.117 <0.05 0.088 0.111 0.168 0.114 0.114
Effluent 0.097 0.09 0.092 0.05 0.092 0.067 0.066 0.599*
Domestic 0.123* 0.05 0.062 . 0.065 0.077 0.069
ChititiMiUffil....10.ttOaliI::::i.i?::?::•:.:::::j:::::•• • ''.: -:••••••••:::K,i...::•:::::::::::::,:::::,::.:,:ii.:::::::::::•:i:::::::::.:•:::::::::::::::::•::::'iii.:::::•;:•:-.M.:;i::::::-:::: ...... . .-,:-...::: . ..::::::.... ..--..-:::;:,:::i:-:-.:":"..........-. *•:•.:.!::::::::iiii:;•:::-:-?:,...:::::.".: ' :::::::•:::.:::::::::•::::::::::::, .,.... . . ,:i::•.:,::::<005.::•::::•:::::•::o7005.:.;::::::'.::.:::.:-:005;i::*::.:::::::::g:',;:::::*:':.'n::: ............... . .: . -:- i:?::....:-::.ig:::::::.:.:.,.:. ..--:.-:...-,-.,.,:i:•-::::. .• • :..- ..:i........iig .. 07.:::':.:•::':::::::::::.::.;.:X::::::":::ai:ii:i:.:";giii.::::i'::::.i::i.:iii.ii::::gii.::.i::
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•:.::•i:.:•:•:•.*::i..;:aff1.6.0eiti.5:::::::•:::::-.i:::ii.•••::'::::*i.::::E::.:0:::•-•:::-:: :::::.:::::::-::::.a:-....i:?:::::::::::::0:-:.::::••••: • •---.::•-i---.:-.:*:::::::::::::::::i:-., -:-, - •-...• .....,.:::::.:.:•::::......,i;:.:::.:gi'...M:•.;•:..,:.:.:::•.,....::::'-:- ... . ''...i.::J.:.,.i.:, .............. $..i.i.......::i.0:i.0.05.:•:.:i..........'...: . • . ' $.:.:•:;i::::..:...<005 :.•;i:„P:- ::.:::,::::i::::•::.*:.-.::.::::.:•-::-. -•••:,:.;•:•:::.i.:::iiiV::::::.'if.:i,i: . . :i...::::•:::-....,-..:-.., ............................ ' :::•.::::::::g0.400.7::::g:::::::::.0:03.5..:::.:::::.:;:::::::::::::.i00.4:::.M.::: . -. ..40k
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Lead Upstream 0.005 <0.005 <0.005 <0.005
Influent 0.009 0.008 0.016 0.023 0.011 0.027 0.027
Effluent 0.007 <0.005 0.011 0.007 <0.005 0.007 0.026 0.01
Domestic 0.013 0.006 0.011 0.013 0.009 0.025
.Nickel ViOt.e..00.r..4:::::::::W=:.;:...::::::.:::::::::::;:',"....:,:.iir.....,:::i::::.:;...::. . . :.::::::.::::::::::::::::::::::::::.: . :::::i1::::::.:,::.:.:•:.:.:::::. .......................................... ..:.... ,,-...:. ..... • •-.--•::::::::::.:i•::::.:: •::::.;•.:::;:::::.•:::::;:::.....;;:;;;::;;;:....................................................................;•::.;',.....::„......,..:..q.Q.4.:::::::.i.:::.4'.912.:::::::::::..::;001:P::::::::::::::::,..:::::*.::.:::: ,•• :.*.:.:;,.:.:. -:::::•:...-.:j",::::::::•:....::::,::::::::'::...:•:.:,..%.:...*::;:::-.... ::::::E:.:.:. -'-::::::.:•:•:::::::;*•..•::::••.:....K0f.Q.5.:::..*•:%:::::.......::.•,::::.:-..::.:i:: ::::::::•••.;K::.::::::::',..:R::::::::::::::g
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Zinc Upstream 0.107 0.098 0.154 0.122
Influent 0.699 0.324 . 1.67 0.874 0.377 0.725 0.725
Effluent 0.261 0.215 0.185 0.139 0.122 0.099 0.145 0.144
Domestic 0.224 0.505 0.921 0.924 0.465 0.725
:BOD5•:::., ...::::: ' 0 tetiftV:iii:i:.i:ii: ::::.;•::::::;":;::::::::::::::.:•;::•••::..:iii:i..*:::::i.:.*•:i.g.:*:::. . ' . - - ••::::::::.,:ii.i.iii:?:**::::-.i.:::::.:::,:g:::::i.:::::::::•:::•:i:.::::::.i;i4:iin::.:.: :.:.-..:.:.-.:. • i.:i.,.....::::::iii:iiii•::•::i:•::i:::ii::::::::*•:.iiii:i:i:.:iiiiiiii::iiiiii:i.:iiiiiiiiiii:iii:::.i::.*:..i..:ii::::::*i•::*:*::::•:i:::::.•::.':::;20iii:i .:•::::.iiii:ii.:::.::. ::::::.:::::::?::::i:.i;:i3:::13:i.:]:::::.iiff,:i0:::::.W.:•::::::::•%•:.:::::.:.::::::::g•••:::::•••••••••:•,:••.:i::::.:iiR:W:::iii;i.::.:....-.:.:-,....- •:::.•
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Flow
Influent
Effluent 0.496 0.504 0.781 0.43 0.615 0.5794 0.4479 0.328 0.275 0.429 0.223 0.254 0.22 0.231 0.232 0.159 0.237 0.175 0.211 0.283 0.241
Domestic
TSS :i:.:•:.::.ii:i*:iU.0:t...tte:6411M.M. .. , •::: :•.i::i::::ii:•:::::..i.::.::::::::i::::'::::.:.::::::::::.:',.:::ZM.iii:•::::ii:::•::i.::::::*:. :-:•••-:••• •••• :.: :-:•:'::::::::•:::;:::::::.=:::1::iii':iii*:::g:•':::'::::':.ii::?::•:i...igW.i.i.i.i:::::, •:.::::::.i.g:::.:••...:::::::::gri:'.:..4.2;2::::::::::.::::::. ... 4 T::::i:::.:.:•::::::•:::ni::•::::•E :::*:.?:::.::.:i::::::::::::::. ....,::::•:-:...:•:::::::::%:::i.i:::::i.':::•:.ii::::::•:.:::::ii::'::::::::ii.0,•:::::.:::••••i::.::.::::.::::.:Mi•fi:•::::•::::::: ::::::::.i.:::::a.:::.?::::.:*::•:: ••• Wii::::;i::::a:i.•:*::.:i:•:.?::::::::.:'•i':iii:iiiiiii" , ....::•:.::.:•:••::::::E.
• ::: • • ::.:•:M.:::]i.:irifl..40t.) . '::*:•:': •• ••• '••••:- . f.37.;ii:-::::•:••.iii-::i::•:67::iii::::: ::*::.46: :,•::•:•i:ii...: .. ::i>:•:, ::::„ .. :::::::::•:i:::i::•::::. .....85 7.:0;::.:::iM•49.;5::i.: 0:::.:::...:i.:i•:;:i:•:::::.:.:.5.37...gi-tin*.:22.8g:Nealaii::::::::0.. .. ',.:i•-.]: ::.::i:. 1369::::.K:::k-iii:.:.::::::*ii::649 ..............................130:::::::::::ii::?::....:::::::.i::::1:4. '••:::i::*:N:.i:.:.:::.•i':::*t: . . ... „ -.1189 " . :::
Eff10.e.titNii:i :::::i:ini: . ' .::::::::::.i..::::::::::::::::;:1:9;•:5..:M.1 207A'::::::::: ::.:ii'...:20 ?.t.W;:::::::::::•:::.'::::::..1.:7:ViO.Mi::::::::i:::::,..- 4:i.:i::;:::.:N::.:::2t2.:::::.:::.:.:.ii....22:i52;N:::::22:;-8EM:1:.:0::3.::::i::ii:: .::::-. . ...:ii::',:,, ••••:.i:::::4ZsgAg:::::::::••.:::.....30.:.:8g. .:::::;::::36::i..ia::::,ig:':i.:321•....ii•:::::•:3.ii:::.i.n:::::A.:$.-..:.::::i.:.ii::]:.i.:.:Z:;:i....!i::::-: .i:.7:.:',.:i....M.:',4.3
....
:.;.•'...':::.:::.44M0.41ja.:i.;;i::;::::::::...i:::...: •::iiiiii::::::ii...gi::•:.:.;;-:.::.:.::.:.::.'...i:::::*:.:.:.:::.i-:::::•ii:::•::::::::!M::::::::::;:::::.:::i•-•i:i•:.:*::ii•i.QM:1:M.N.:::a:g:.:if:::-:** :-:•:.: -:-:::::•:-• :::::':::i;.:W:i:' -. •ii.:i•••iiiM:r:igiii.i.::::::::::::i::',..:::.i...i.:::::::::::i..:P:::::* ''.... 40::::::::::::::::::::.:.1:.:::6 . 0.4.:::.r:::=:.::.,,::07..i:g.•::::.:::.i:.]:.:... ............................................................................................................................ - •••• ' •"::::::::.*::::::::i.::;•:::::::::.!::::i.i.;:iii:iiii:::::::q::::.:..:?:?::•:•::::::::i:iii:-:iii::::21-.0".-:::::::::.A::::::::i.
Temp.
Influent 18.2 13 13 14 16.4 21 22 28 29.5 26 18.5 14 14 17 15 17 26 31
Effluent 15.4 12.5 10.9 11.4 14 18.3 23 26 28 29 27 21 18 14 11.5 -12 13 14 20.5 22 30
Domestic
...13K..:i.ii.:::;;;:..:•:::::::::::::::.::i:'::Aii:‘i:i:.iiii.:•::•::::::iiii??:::::M .::::..i":i.:::SiMiiii-.,:ia.aiNi:Ri]....::::::.::::::::::::::.:;:::::: ' --:iii,..:.W-::::::::::4i:ii::-.0:::::::.,:i:.::.: •:;:ii::.:::::: •••••....:',:a:-:;,:-:,*::, '''' ''''' ••• :•• •••:::::.: - - '. ::•:::.....,::....,..,::-.. ;.::::.i:i::.::::Zi.:-:::::::H:::. :.:::::::::.i.:.::::::•:**,*:.:':•.i:i:,.:•::::::;•.;::::::,:.:::-.;•:.:::::::-:.,::-E:.*::-.:.i:::,•.:::agi ,:•::::.,.,:.:.::::::::. .. ..:.,::::::::,:•:::::::i::.:::::= 0:::::::'nia:: .• if:::' :•::.i.:;iif::::ie: "
.,. ........... -... ; ..-";•-•
'
...::ii-:.:iiiiii]iiiiiiii:.:.? .* •• • . ItiF:i:. ::::-.•::::::7.5epV:P.138.;8::.:.::•7:cii.C:zt ..: . ... . .• .... . ... ...: ... ... ....... . „ , . ii"
. •-..... ::..:.::... ..0.il.'•.: .,•:-: •••::::::•::::::::::.:::::•:::.::.:::.:::.27i27.:U7.-.Z.47.:::.7:fa . • •:::.,::.:::::::i:-fi :::.iii:::........i, - ".• - 72'76 7579:...6-78Eflx
al.iiilla::.::...: 6:.•• :47...ii206.:47...7g6. .:::. :Zi.ii:6:•;:8;7.-:3':i:i ::4::74:::-:•:i;i: :...47.:1:;:.i: .'..6:47.:V.-6••,•;Z:47...fii:".:6:;.4.:..;:•:: if...*...4.7:1::;iZ.7.::;:1•••::•:61::9:iiii.i7:3:4-6-9i.g7:i: .:-... :-.. .::77.:3P.:::;'::::- ... :it::::::::::6A7 2 .iii.i.•:a::697:2-•:::..:....:•::i.:::..68.:4::' ii3EN EI.Ffi.9:.:ii:Iiii:•:::: :i.48.:2.iiii.:•••.ii.:•::: ' :.-.• - '
Domestc
Oil & Grease Upstream <1 <0.1 <1 <1
Influent 1.6* 9.3 6
Effluent 6.7 4.4 5.9
Domestic 24.6 1 24.3
nirrionla:N . 0:6.tie. v....1::::::::::::::.::..g..::.ii:::.:ii.ii.n...::.•....i:::;.:;.:;.::::::::::..i:::i:::::::::.:i.::::::::;-:.*: .• : • ii......"-i::::::
...................
....::.i -:::::::i..:::::.•:::::::::.-,::::iii.i.:::.:Aije.i.f.l. ...::::::::::i•:::::::::::.:•.:.i:D.i........:V:: :. :..:.:::::,..•: 1:::::::;::::::::::::ii.;*:::::::.::i::::.:.:. ..:.:.:.:::::-:::::::- :.-.*:.:',.: ..-.:::::.:.::::::.:::..... .. •:::::::::::-.V.::::::iii.::::•ii: iiii;ii.:.;::...::::.i,:::: ..:.:.: ....• - • ..•.' ;7i:j01..i..-":;:::ir.::i:-.:.::::::::.::::iiiiMiii:.:::::i:::::iiii:1* ':::::iiii...";:si.:::::::"::::::::::::-::::-: ...i'..:.:i.::::..,:: ::::::::::::::::::ii:::::::::.:R:::::n:::::::•:::::*::::::.::::::iii.i.:::;ii:.*:::,..... •::i:n:.::•:::ii".:i.a::::::::•.::::::.::::::.iN:::::.:ii:".F*i ...: ...",: ' ••••
:"::::::::,.:::::::::::,:iiiiiii.•::: • EtiltiOfei;::::P.::„ ::•,:.::::R.........-:::::.:::::::.:4192:;'...:::i:.;.;-:...12,25.::::::::iii,:,.*:X:.....;.:*..8:::::::.::.:g. '. .-..*:a::::::?- .....- , .::::', ,:..,....- .... . 'f...:. -......:::::":.:::::: ..... . .:'...?;::::::::."•::::::::::......:S...5:,':.•::::::::::::::::.8 :....,..,...,:,: 1.5.::::::::::::.:::::...T.95.::::iiiiii.:.:::.:.:ii.:::)18:::::i.gi:i:;::::.:,.:0A.::::::::.:-:i:::::if::?,.::::::::-..ei25.::::•:".:,•:',...m.:•:::..i. .- x.:.. :::::iiiii:;*:. 1::;"::::::::::::-.....".:i,. 6.6 .... .:::::.....i.:::::.:::0.4:•:::::::.*:•:, f.: .
. .
`::::::::::::,i,J:i.::::,...,.:,:••••:-.:i%,:::::.i:::i.:D.Ortle'stieiii.,::::::0:::::,:i;:.:.ii,iii.:.•:?..::.::::iii:..:::;::::ii*:-..:i?:iii:ii:•....:,:..:-.-,..:i:.:.",•::::::.,:.;:;:gi.::: '':::::::,:-.;',:::-:-•:i.:::::::,:;.::•;i:.:i;.::::::::.:, ,...•::.........::::::•:,, .i-ri.......,.::-:::::..:7.::::i0:...:' •••••:.,--- • ' •••:::,.ii.o.:•,i;.::.:.:::::.:..i....:*•::::::::i:-:.,i.':,i:•,::.:,•.. 44.:::::::::::-*:::::::::2:13;::i.:?;::.i:.:,:i?:.g:iA::iiii:ii:::4;2•.:.V:::::-.••::;ii:.:::,--:::::.*:::::.:::60;ii:.:*:::. •-••••••• ::::::::::::::-*.:*.:::.:::, -...,:. ••••:::i."....:i:i,:::.,.,... • - • -' ••• , •:-...:•:,•"::•:•::::204:::::::: :::::::::::•,:::::0..,•:::••••• • •

DAVIE CO. WWiP Nov 90 Dec 90 Jan 91 Feb 91 Mar 91 A • 91 Ma 91 Jun 91 Juli,1 Au /91 Oct 91 Nov 91
Cadma m Upstrea�»:_: ;
i.
..... ......-....... ': :':•:�:?.:••::::. �:.�: ':- M 1.
mes
Copper Upstream
Jan92 Feb92 Mar92 A•r92
r i:00
0.�:, e3ForG:
0.11706 { ci< 0.088 0.111
0.097 0.092 0.05
Chro nm:U"g}�.r ....::; :;:.;::::::: <:: ::•: •::::.: •:;:>:.::•:< :•:;::•:::. :•:::::::<:•: •::;::•::};:•>:;::.:::...:::::.::::.•::,,:.,............. 0.123* 0.05 0.062 0.065
••••••r
J S1V]V
ert ...... . }�
.. , nt:v:::.:_}};..;}};i.;:::ti$i'y:%?'};:{'>}:�:�Y?i::::{::y:::}'::::•:$::;:}:{:i::?:tiff{:}:{{:: i::�:•}:-i::•ii:•::•::•: �:}i: �..:.:.:::.:.�v:-.�::.•••.:.--::r:::{:}
0:C
••fWN•
Lead Upstream p eam
Influent
Effluent
Domestic
influent
Effluent
0 038=
0.168
0.114 0.114 •'
0.092 0.067 0.066 0.599*
0.077
0.037
0.105 ,ij.
0.079 •0?783%6
e
,3 \
5 /.
.. �j} •rF 3J .ti•::A:IIMr :ti;::tip::::ti': 'ti :'::ti:-:::::•::! :.:::ti::•:..•...•..•::::::•
t t
... ............................:...::.:.
005: D .C.•
1{� v
D .C„ 0 008: r :
:004E .......
. .. .... ..... .. .....................:..:.: :•. �:.�:::.�r }:•i:•:�:: w::!: v.:•: }...:.:.Y .....};:}j::i:?•istti::::i�}:}:v:4'r:•}:::}i:{•}:::<:•:�'//����::'
0.009 0.008 0.016 0.023 0.011 0.027 0.027
Domestic 0.007 :5 0.011 0.007
Nickel.<:: i11 ire ....,.:::::;:::::::::>::::s::::>:::;::::::::::::::::•::•::;:::••:::•::•::.::::::<::::..::::::::::::.::.::.. :........0.0110.013
0.013 0 006
• >1f�tAtit%
. ....... r 0 O'O'
.. . ..... .. _ ........................................ ....................... �{ O. { / :ice.• /� /� .•r v
Znc Upstream
0.107 0.098 0.154
Influent
Effluent
•
Grease Upstream
............................... ....,.........._................................ -
. ..................
........ ..:::..........:.... .
Influent: ..�.. .:.
9.3
Effluent
Domestic
0.122
0.069
0.065
0.003
0.017
0.009
0.013
47.21%
1Q72`X
0.120
0 215 0.185 0.771
Domestic 0.122 0 099 0145 0.144 0.164 78.75%
:8Q
...D.!.
5,....•..'::::ScUpstreae•:..:::::::.::::•s:}.::<::.:::::::..»..::::•::.:•,_:::::.::•...:>:::•:::::.:::•:::.:.:.::.:•.::..:.: .>:...::::-:: . : •:,:..::::•:::•.:::_.:....:...:: :...:; .................,....
.... .. ..... ...........i .....ti.....
..t ...:. .::•::::::::.::.:..._:::::::.:..:::........•...•..................:.:.:::::::::........................
......... 725
.....
627
....::. ..1.. ..f.......
...l. 0.224 0.505 0.921 0.924 0.485 :::. a :::::.l88 09..l C. ,i.. .. ......... .. ......:.. ... ........p� ... •► ....... .. ....... .. .. •,. • 0..6......::.:DDrnC•::.::::.g•:::....::::::.�.�::::::::*:.......................................::...............................::::::......-................. ......6•.lt.l
iiiiIII11 1111i11.
Flav• •••••••
Influent
0.377
0.725
0.725
Effluent 0.496 0.504 0.781 0.43 0.615 0.5794 0.4479 0.328 0.275 0.429 0.223 0.254 0.22 0.231 0.232 0.159 0.237 0.175 0.211 0.283 0.241 0.350
:TSS� :U•sues mastic
Y•
.... :.}: :.: :. �:::. :.: :::::•:':i•:::-}: }:•.:•::•}:•.':':•!.: :'}: :•:•:i':•::•::•t: ::•::•:•.::� •:Y:•}:i•}:•:;: i':::•}:•} : } l:•}::i•:i:::•l:•: t: :: ii'•: �:•: }:if ':•:.y:: t ` •:.: :f•::::: J}:• �•: �} :
..,:.... .. . ..... r . ,........... r .... r ,. ;.}}:•:: }:i • r :}}:.:?: , i ii":}} ii,.: i •:{r; i.;:: r:i•::i:i ::i'• : i4i: S••• •.}; •::::. :•}: ::is ti- -}••'i:•: f::i* *::.4
-. 85,5...........
... a _....::.:::::.•:. ....:.._ ..::.::: ':.�i.:;:�:•:::i•: ::.:; :.::..--.�.:�::.
Temp.
..................... times c:•}::•:•::•:�;<::}::::::.�::.:......................................................... ..:. .. 42.2... .......... ...... ....... .._............
y:..... _:. 43.2...............
...............:::.:....:.:: :: �: :•:::::::.ti.:v::w; :. �::::::.�::: :•: :•::. :.....:.......:tl:.... .. fi11111I.IIlt.ltl t.iN.,I Ilt 1. tlfil i,ll 1 •
:: �:.v . ;...: •..........:........................................ ::::•:..; ...............::.:::::. • .... :::::. �.v:: :................. f{ l ;1 t,.; I; Ciil {I{111111{Ilii. l.. it
..............:..:::.......:............. � :. ::::::: ::::::::- ;•::•:•:ii•:•::<::•:::::• ::•: � :• i;::;z�i 5 : ii•::.;:•;::•}:i•:::•:i :i i.}:•}:iiii :•:<;•:'1.�:'t f7:;.; .:: •.:,: •:: i.;.:::.; •:.;:::•. ••:•:i<:::
18.2 13 13 14 16.4 21 22 28 29.5 26 18.5
15.4 12.5 10.9 11.4 14 18.3 23 26 28 29 27 21
Influent
Effluent
Domestic
14
14
17
12
:....:.::::.::::.:.:.:::•::•>:•::•::•:•:;::;::<::>::<::::::::::::;::::::: _::::::;::::f> ;:::::::y::::::::i:::: ist:::::i:::i:::;::::::'f::::::::::::::::; i:;: 5:::::•
::::;:;:;':::?: ?::;:::y:::: ;i:#: _:5:; ::::;::: :::>:::::= 2:::i:::#:;i:::::i:::;:i:::::r::i::::::::Si::: :•::•}:i•}:>::•::•::•;: }:}>::•::i.;:.:Y:::.: •. A::..... ....::..:: ...
....... . .... .... ....
82••88 78••6•v-• •...�: �'•� T� 5 . g..... 8 T. 7 7 78 4 '6 b-- • � T{
7#" �I 6' 4 700 7
.7.1... ?
en
1.6* 6
15
17
26
31
22
30
19.644
18.643
rrF :a+-•^•{ ••.' 0.007
}
0.009
t
:Ny
.11032
0.026
0.025
0.01
0.699 0.324 1.67 0.874
0.2810.139
t k 4
{i'ttt
3
Ma 92 Jun 92 Jul 92 Averape % Removal
M''h:r Ct: C:S:.:y' 0' 333�33.•#:r':::{:}::$}::::{:'r::::{:}::•:::::Q
•
18
Dec 91
14
11.5
13
14
20.5
6.7
7.650
:Ammonia:::._::::•:::.:..:::::.:::.:::::..:::::....::..::::::.:::::::::::::::• :::::.:............,. 25.93%
1 24.3 16.633
... ........ ....... ......... ................ ..ems•
.. ............. ......... ...................
e ............ ........
...................:...
... .. ..............:
............. .
. •::.:::.12;.................
Note .Value not used m ......�::::::: •.�:': • : •Y•:: ••: •:.
averages or grap s. .. ................... .... ...........r.......:::::.�::.:::.�.::::.:::::::::::17:533:i.;•::::•::;:•:: •}:<•>::::::>:::':::;:;�:;:
4.4
5.9

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0024872
PERMIT -FEE NAME:
FACILITY NAME:
Davie County Water System
Cooleemee Wastewater Treatment Plant
Facility Status: Existing
Permit Status:
Major ✓ Minor
Pipe No.: 001
r keri e ck !
Design Capacity: 1.5 MGD
Domestic (% of Flow):
Industrial (% of Flow):
%
4 `°
Comments:
PIRF requested 12/29. Etci - Nis HAP cAPAc(Ty To TR%AT
l 7 M.c,) (1-1-U5 i5 tJe A i(2ve MopcFiCIATon1), in►;rtiJAt. MoDintArio s
itiviri'N OF 5Lttc74e Di4rsTel A tLL Atd' i4 t lb IR.I -r-
i , h M4 O q41cvN . Rik) ei. vJ datAii tt oN A/C -
RECEIVING STREAM: South Yadkin River
Class: C
Sub -Basin: 03-07-06
Reference USGS Quad: D 16 SE (please attach)
County: Davie
Regional Office: Winston-Salem Regional Office
Previous Exp. Date: 7/31/94 Treatment Plant Class: Class II
Classification changes within three miles:
Requested by: Susan Wilson (4ik'C' Date: 12/29/93
q
Prepared by: 421 `��ck_c. j
( Date:
Reviewed by: ((.P/)'lG1110S'7" 2 Date:,N5
-NO, ffio/1-
DQ L_
Modeler
Date Rec.
# I
/US
J/3/qt
77ti6 , ,.:
Drainage Area (mil) •c6, Avg. Streamflow (cfs): 7G7
7Q10 (cfs) / 0 (o Winter 7Q 10 (cfs) J.) 30Q2 (cfs) �� 9
Toxicity Limits: IWC 2 , / % Acut - Chronic
Instream Monitoring:
Parameters
Upstream Location
Downstream Location
Effluent
Characteristics
Summer
I
Winter
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
TP (mg/1):
TN (mg/1):
Chlorides (mg/1):
Cadmium (ug/1):
Monthly Average
Summer Winter Frequency
1.5 1.5
30 30
monitor monitor weekly
30
200
6-9
monitor
monitor
monitor
monitor
monitor
30
200
6-9
monitor
monitor
monitor
monitor
monitor
daily
monthly
monthly
quarterly
2/month

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:
FACT SHEET FOR WASTELOAD ALLOCATION
Cooleemee WWTP
NC0024872
88% Domestic / 12% Industrial
Existing
Renewal
South Yadkin River
C
03-07-06
Davie
Winston- Salem
Susan A. Wilson
12/29/93
D16SE
Request # 7705
1\1,r Dept. (►
_ ,..:.ill
Office
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
0211900000
1983
564
106
180
649
229
2.1
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
The facility is increasing permit flow to 1.5 MGD, but increase has no affect since adequate
design capacity already exists. Most toxics monitoring requirements will be dropped from permit
and placed in LTMP, but facility should continue to monitor cadmium on a weekly basis since high
effluent concentrations have been previously reported. Facility should also monitor quarterly for
chlorides because the APAM data showed a chloride concentration of 455 mg/1. More data will be
needed to determine if a limit is warranted for the next renewal.
Special Schedule Requirements and additional comments from Reviewers:
/-Ri GoroHFu r JIC$ (e e
Petommeo✓P Z/4 P ✓T}F M/AJ/TbIJ/'4 F% /- CA-tiMluM i rf,,JsisreA- rv/oiw
FAQ/� IT1 �5 ,eFGJ y/�2�,Igi ITs Po Mo,Jirekr nic, is dor `/ee--
D,tNr c=dow',H /n/ I-7n, r
Recommended by:
Reviewed by
Instream Assessment:
�Zegional Supervisor:
Permits & Engineering:
7)
-)---4)/ir:(0-A9191‘
Date: -.
Date: a -)a i/ y
Date: 3— L1-5 4(
Date: 3
MAR 2 6 1994
RETURN TO TECHNICAL SERVICES BY:

2
CONVENTIONAL PARAMETERS
Existing Limits:
Monthly Average
Summer Winter
Wasteflow (MGD): 0.744 0.744
BOD5 (mg/1): 30 30
NH3N (mg/1): monitor monitor
DO (mg/1):
TSS (mg/1): 30 30
Fecal Co1. (/100 m1): 200 200
pH (SU): • 6-9 6-9
Residual Chlorine (µg/1): monitor monitor
Oil & Grease (mg/1):
TP (mg/1): monitor monitor
TN (mgll): monitor monitor
Recommended Limits:
Monthly Average
Summer Winter WQ or EL
Wasteflow (MGD): 1.5 1.5
BOD5 (mg/1): 30 30
NH3N (mg/1): monitor monitor
DO (mg/1):
TSS (mg/1): . 30 30
Fecal Co1. (/100 ml): 200 200
pH (SU): 6-9 6-9
Residual Chlorine (µg/1): monitor monitor
Oil & Grease (mg/1):
TP (mg/1): monitor monitor
TN (mg/1): monitor monitor
Limits Changes Due To: Parameter(s) Affected
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
Other (onsite toxicity study, interaction, etc.)
Instream data
New regulations/standards/procedures
Improvements to existing facilities X Flow
(explanation of any modifications to past modeling analysis including new flows, rates, field data,
interacting discharges)
(See page 4 for miscellaneous and special conditions, if applicable)
7-tie pt.bi a4c 147-"L _ALIA' 661-td dy a'rta (44' 9-16')
-Awth, gq4.4rr-9d cL c /9la. AL -Hut „u c'-/ c,0 ,t, k `0 5 rJ _ a, v �.a c�..
� U C/

3
Type of Toxicity Test:
Existing Limit:
Recommended Limit:
Monitoring Schedule:
,Existing Limits
COD (mg/):
Cadmium (ug/l):
Chromium (ug/1):
Copper (ug/1):
Nickel (ugll):
Lead (ug/l):
Zinc (ug/l):
Cyanide (ug/1):
Phenols (ug/1):
Mercury (ug/1):
Silver (ug/1):
Recommended Limits
COD (mg/):
Cadmium (ug/l):
Chromium (ug/1):
Copper (ug/l):
Nickel (ugll):
Lead (ug/1):
Zinc (ug/1):
Cyanide (ug/l):
Chlorides (mgll):
Mercury (ug/1):
Silver (ug/1):
Limits Changes Due To:
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
New pretreatment information
Failing toxicity test
Other (onsite toxicity study, interaction, etc.)
TOXICS/METALS
Chronic (Ceriodaphnia) P/F
2.1%
2.1%
Jan., Apr., Jul., Oct.
Daily Max.
monitor monthly
monitor monthly
monitor monthly
monitor monthly
monitor monthly
monitor monthly
Daily Max.
monitor weekly
monitor quarterly
WQ or EL
Parameters) Affected
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.

4
INSTREAM MONITORING REQUIREMENTS
Upstream Location:
Downstream Location:
Parameters:
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 /1/,9
If no, which parameters cannot be met?
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?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) _X_ (Y or N)
(If yes, then attach updated evaluation of facility, including toxics spreadsheet, modeling analysis
if modeled at renewel, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

Facility Name COoketene2 &)t t) % p
Permit # 2412. Pipe # fib f
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is,2. ( % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform
quarterly monitoring using this procedure to establish compliance with the permit condition. The first test will be
performed after thirty days from the effective date of this permit during the months of
Jael • Apt. cTall pr f . . Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 IDS cfs
Permitted Flow /.,< MGD
IWC a. f
Basin & Sub -basin 0,3— 07- 0C
Receiving Stream S yadk 1,1 ,Fier
County . 6.,i;e,
Recommended by:
QCL PIF Version 9191

TOXICANT ANALYSIS
Facility Name
'Cooleemee WW T P
NPDES #
' NC0024872
i
Qw (MGD)
1.5
i
7Q10s (cfs)
106
--
/WC (%)
2N15_ ._____________.1
S. Yadkin -giver
Reeving Stream
Stream Class
,C
FINAL RESULTS
CADMIUM
`:
Max. Pred Cw
152.5ug/I
Allowable Cw
93.2= ug/l
I
CHROMIUM
I
Max. Pred Cw
546 ug/l
Allowable Cw
2329.6i ugA
LEAD
i
Max. Pred Cw
98.8 ug/I
Allowable Cw
1164.8 ug/l
i
NICKEL
i
Max. Pred Cw
513l ug1
Allowable Cw
4100.0i ug/I
2/21/94
PAGE 1

TOXICANT ANALYSIS FOR Cooleemee Tox.
Parameter=
.CADMIUM
I
Standard =
2
NA
n
BDL=1/2DL
Actual Data
RESULTS
1
0.5
<1
Std Dev.
6.409080729
2
0.5
<1
Mean
3.55
3
0.5
<1
C.V.
1.805374853
4
0.5
<1
/
5
0.5
<1
6
0.5
<1
Mult Factor =
r
6.1,
7
0.5
<1
Max. Value
25
NA
8
0.5
<1
Max. Pred Cw
152.5
µgA
9
0.5
<1
Allowable Cw
93.2
µg/I
10
0.5
<1
11
5
<10
12
2
<4
13
2
2
14
2
2
15
1
1
16
25
25
17
14
14
18
1
1
19
13
13
20
1
1
21
2/21/94
PAGE 1

Worksheetl
19 'i 3
PARAMETER
PARAMETER
PARAMETER
PARAMETER
PARAMETER
MONTH
Ccrtn i,i
C.ijrom;awt
Cy, ex
/U14.2./
(.cad{
JANUARY
O. 4oa.
D, 02l
O. oVi /
< 0. 05
O. 01..
FEBRUARY
0. 001
'<0.82.6*
D . d 9S
o. oSa
0. 003
MARCH
a . 02.3
0 . /30
a . / oS
O. oS
<o. o03
APRIL
<p. 0.0 t
-gyp .626
b. O�(o
< 0. c.)o.S
< 0. Do 3
MAY
0. 01 lF
< D . a zS
0, O!Q Z
<0. 6 -2
<0.403
-:40.0o3
JUNE
<v.00/
<0, O.P-5
0, c/(o
(. 1,ys
JULY
jl.Sv ,vte-L
LLda
M 1.-5
AUGUST
it
/t
0.0 01
<0 , 605
6, 651
0. 006,
<0. 610
SEPTE7VIBER
OCTOBER
0. 0/3
E o. 005
O. 037i
<0.606
<Zv. 0(0
<b . o0Y
-o. 00.5
<0. a.�3
<0. 405
< 0 . o i a
NOVEMBER
��.00 !0,o11)
r�,o 2
0 ouo
< o, o l b
DECEIvUER
amino dc4-1 mt>I-Als
6.207/
D. 212_
('.1/2
0.306,
Page 1

Worksheetl
I q 9 a--
PARAME I EH
PARAME I EH
PARAME I EH
PARAME I EH
PARAME I EH
MONTH
%Gide?!rkvvt
CAI -gym: vii
Cl/cir
A1ckel
Lead
JANUARY
FEBRUARY
0. 6 5 D
O. 0c1
MARCH
od 1
<O.OSa
0.D�.
<0 &$O
<D.DO_S
r<o.
APRIL
< 0. 00(
0. 007D•
o� g
�D. o5 0
D. ObMAY
O. 002..
<0, OSo
6, D (0-7
0 ..t: •�-"�'
' s
JUNE
0,001
. 0, b$O
C), 0(9(o
<0. bs0
O. 02(0
JULY
<p. ob J
<0, o5o
0, 551
D.OSb
6, 0/0
AUGUST
- p , 601
<D, 65o
0 , 061
<0. 0) O
O, o0(,
<0 , 001
<0 , O 6
D • b y3
< D . o,So
.<- 0, a OS
sEFrEI BER
OCTOBER
0 , bo I
c a , 05 0
O. O y r
< o . oS0
<o , v 0S
NOVEMBER
<o. oo 1
<0, ()25
O, 0S,,Z
< 0 . QSb
-CD ,60
DECETBER
<0, O(O
<0..0-5
D. OS)
75, 09y
-b. 005
Page 1

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Residual Chlorine
7010 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (UG/L)
IWC (%)
Allowable Concentration (ug/1)
Fecal Limit
Ratio of 45.6 :1
Ammonia as NH3
(summer)
106 7010 (CFS)
1.5 DESIGN FLOW (MGD)
2.325 DESIGN FLOW (CFS)
17.0 STREAM STD (MG/L)
0 UPS BACKGROUND LEVEL (MG/L)
2.15 IWC (%)
792.05 Allowable Concentration (mg/I)
Ammonia as NH3
(winter)
7010 (CFS)
200/10om1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
Allowable Concentration (mg/I)
106
1.5
2.325
1.0
0.22
2.15
36.56
180
1.5
2.325
1.8
0.22
1.28
124.12
1/20/94

cc:
Permits and Engineering
Technical Support Branch
Davie County Health Dept.
Central Files
WSRO
�i
`JAM�
To: Permits and Engineering Unit
Water Quality Section
Attention: Susan Wilson
Date: January 12, 1994
NPDES STAFF REPORT AND RECOMMENDATION
County Davie
Permit No. NC0024872
PART I - GENERAL INFORMATION
1. Facility and Address: Cooleemee WWTP
Davie County Board of Commissioners
123 South Main Street
Mocksville, NC 27028
2. Date of Investigation: January 12, 1994
3. Report Prepared by: W. Corey Basinger
Environmental Engineer
4. Persons Contacted and Telephone Number:
* Mr. Robert Slusser, Hydrologic, [phone]
5. Directions to Site: From WSRO, travel I-40 west into Davie
County. Exit on Hwy 801 south and travel through Cooleemee.
Proceed across the South Yadkin River into Rowan County.
Approximately 0.1 mile after crossing the river, turn right
onto the unmarked drive leading to the WWTP.
6. Discharge Point(s), List for all discharge points:
Latitude: 35° 48' 18" Longitude: 80° 33' 29"
U.S.G.S. Quad No. D-16 SE U.S.G.S. Quad Name Cooleemee
7. Site size and expansion area consistent with application?
There is ample area available for upgrading or expansion.
8. Topography (relationship to flood plain included): The WWTP
is located above the normal flood plain.

9. Location of nearest dwelling: There are no dwellings within
1000 feet of the WWTP.
10. Receiving stream or affected surface waters: South Yadkin
River
a. Classification: Class C
b. River Basin and Subbasin No.: 03-07-06
c. Describe receiving stream features and pertinent
downstream uses: Cooleemee takes water from above a
small dam above the discharge point. Stream
classification changes from WS-III at the dam to Class
C at the discharge point.
Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: 0.744 MGD
(Ultimate Design Capacity)
b. What is the current permitted capacity of the Waste
Water Treatment facility? 0.744 MGD
c. Actual treatment capacity of the current facility
(current design capacity)? 1.5 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years. ATC issued September 27, 1993 to include an
aerator, renovations to renovate a previously modified
clarification structure, and miscellaneous piping
improvements necessary to transfer waste sludge to
proposed digestor.
e. Please provide a description of existing or
substantially constructed wastewater treatment
facilities; The facility currently consists of a bar
screen, grit chamber, influent pump station, aeration
basin, clarifier, aerobic digester, sludge drying beds,
chlorination, and flow measurement.
f. Please provide a description of proposed wastewater
treatment facilities. N/A
g. Possible toxic impacts to surface waters: None known.
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM
Permit No.
Residuals Contractor
Telephone No.

NPDES Permit Staff Report
b. Residuals stabilization: PSRP PFRP
Other
c. Landfill:
d. Other disposal/utilization scheme (Specify): Due to the
low loading to the plant, no sludge has ever been
disposed of from the plant.
3. Treatment plant classification (attach completed rating
sheet) . Class I I I
4. SIC Code(s): 4952
Primary 01 Secondary 55
Main Treatment Unit Code: 0 5 0 x 0
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved. (municipals only)?
N/A
2. Special monitoring or limitations (including toxicity)
requests: None
3. Alternative Analysis Evaluation: Has the facility evaluated
all of the non -discharge options available. Please provide
regional perspective for each option evaluated. N/A
Spray Irrigation:
Connection to Regional Sewer System:
Subsurface:
Other disposal options:
PART IV - EVALUATION AND RECOMMENDATIONS
Davie County Water System has applied for renewal of NPDES
Permit No. NC0024872, which is assigned to the Cooleemee WWTP.
At the time of the site evaluation, no apparent problems were
observed with either the maintenance or operation of this
facility. The facility has consistently met permit effluent
limitations.
Currently, the facility does not use the drying beds, which
have become overgrown with weeds and brush. Also, one of the
aeration basins is being used to store wasted sludge from the
clarifier.

NPDES Permit Staff Report
WSRO recommends reissuance of this permit in accordance with
Division guidelines.
Environment-i Engine
er Quality Iional Supervisor
Date
094-

G Cooleemee WWTP
Davie County
NPDES Permit No. NC0024872
r
USGS Quad No. D-16 SE
USGS Quad*Name Cooleemee
A h`
A q \
72
ti:750 v t
I k\
yfij •
r
\

RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility: GbO=�, Is V J TP
Owner or Contact Person: `$cu)c.4'e-61-1
Mailing Address: -pa n45
County: galDa Jh E= Telephone: 7-o ¢ - z ¢ - 5888
Present Classification: New Facility Existing Facility=
NPDES Per. No. NC0024872 Nondisc. Per. No.WQ Health Dept.Per No._
Rated by: ezBSc Nye- Telephone: lia -tsct b -Zoe Date: O. 1
Reviewed by: Telephone:
Telephone:
Telephone:
ORC: Telephone:
Check Classification(s): _ Subsurface SprIrrigation ____ Land Application
IV Total Points:
Health Dept.
Regional Office
Central Office
Grade:
Wastewater Classification: (Circle One) 1
II
1.I.PLANT PROCESSES AND RELATED CONTROL FOUfPMENT jJCH ARE AN INTEGRAL PART OF INDUSTRIAL epODUCTION Si iALL NOT BE
CONSIDERED WASTE TREATMENT FOR THE PURPOSE OF CLASSIFICATION. ALSO SEPTIC TANK t T9AS CONSISTING ONLYOF SEPTIC TAM(
AND GRAVEN NrTRIFiCATION LiNES ARE DCEMPT FROM CUASSIFICATIOtt
SUBSURFACE CLASSIFICATION
(check all units that apply)
1septic tanks
2.pump tanks
3_siphon or pump -dosing systems
4 sand lifters
grease trap/interceptor
6`_oil/water separators
7. gravity subsurface treatment and disposal:
8pressure subsurface treatment and disposal:
SPRAY IRRIGATION CLASSIFICATION
(check all units that apply)
1 `_preliminary treatment (definition no. 32 )
2. lagoons
3septic tanks
4. pump tanks
5. pumps
6sand filters
7`_grease trap/interceptor
8oil/water separators
9, disinfection
10._chemical addition for nutrient/algae control
11. spray irrigation of wastewater
In addition to the above classifications, pretreatment of wastewater in excess of these components shall
be rated using the point rating system and will require an operator with an appropriate dual certification.
LAND APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of biosolids. residuals or contaminated soils on a designated site.
WASTEWATER TREATMENT FACILITY CLASSIFICATION
The following systems shall be assigned a Class I classification, limiest the flow is of a significant quantity or the technology is unusually
complex, to require consideration by the Commission on a case -by -case basis: (Check if Appropriate)
1, OiVwater Separator Systems consisting only of physical separation, pumps and disposal;
2 Septic TanWSand Fitter Systems consisting only of septic tanks. dosing apparatus, pumps.sand tillers, disinfection
and direct discharge;
3, Lagoon Systems consisting only of preliminary treatment. lagoons. pumps, disinfection. necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed -loop Recyde Systems;
5. Groundwater Remediation Systems consisting only of olVwater separators, pumps. air -stripping, carbon adsorption. disinfection
and disposal;
6Aquacutture operations with discharge to surface wafers;
7- Water Plant sludge handling and back -wash water treatment;
8. Seafood processing consisting of screening and disposal.
8. Single-family discharging systems. with the exception of Aerobic Treatment Units, will be classified 1 permitted after July 1.
1993 or if upon inspection by the Division, it is found That the system is not being adequately operated or maintained. Such
systems will be notified of the classification or reclassiiication by the Commission, in writing.

The following scale Is used for rating wastewater treatment facilities: (circle appropriate points)
(1)
(2)
REM POINTS
Industrial Pretreatment Units or Industrial Pretreatment Program (see definition No. 33)..»«.»».. ».»...».«.«.».»......
DESIGN FLOW OF PLANT IN god [not applicable to non -contaminated cooing waters. sludge handling facilities for
water purification plants. totally closed cycle systems(ses definition No. 11). and facilities oonsistirtg only of kern
(4Xd) or Item (4)(d) and (11)(d))
0 • 20.000.....»..».»».....»......NNNN•».......••»..NN».N...•N»....»...»..........«...».»..»..... 1
20.001 - 50.000..»NN.»..».....N..»»»..••••••• .....»«...... N..»....»...«»....»»»N..........»..».»..»N..........2
50.001 - 100.000.....».........».....«».»»-.».........».....«»».»».N«».....»«».....»»»...«...N..»..»»N».N».».....».3
100.001 250.WO..NNNNN.»•.N.N.NNN.N..N»».....»..........»».»»«.........».»»....».........N.....»N».....»«..».«..A
250.001 - 500.000...N.».»..«....».....»...»..».....».»»»»......»«»«...»...•»...».».»..».....»..».....»....«.».....»..
1500.001 1 000 000«»...».»..»N»»•N».»»».»»..».».»».»»«.».»..»»».»N».»N»N...N».....»»...».».»»»•
1.000.001 - �2.000.000»pep ...... POD N..N•N•.N•..•.••• N.N.•N••N.....N.».....»».»»«....•»..»N»»..»»..».»..»1
2.000.001 (and up) rate 1 point Od itionai for each 200.000 gpd capacity up to a maximum of ....NNN......30
Design Row (gpd) d .74 4-/44&s&
(3) PRELIMINARY UNiTS/PROCESSES (see definition No.32)
(a)
(c)
(d)
(e)
(1)
(2)
(h)
(I)
(4)
(5)
(6)
Or
NN.N..NN••N•N•NN•N• N•NN•N••N•••«•N•»• N•N»N•.NN•
Mechanical Screens. Static Screens or ComrnUuting Devbes...............N..«.N....N.N.N.»N.....N.....«N..».2
Grt.-N•..Y-N.NN-»-N-N.NN..••N• N.•••...»..••NN•.N.N.»» »...N. N...••.••••N.N.»•..N••N 1
or
•.MeMNN•«••».••••••••».
hani al orAerated Grit Removal .NN•N..•.»N..N.NN..N....NN.NN.N..NN.N..NN....N
Fow Meaarrinp DOWN •••N•...•-•N»••NN..N...N-•..N.N.N.N.•.N.N•.NN.N.NN.N.N..-•.NN..N•••N .*POP. 1
or
Instrumented Flow MeasunemenL.NN......»»NN.NN.NNNN.N»»NN..NN».»».N.NN.N.NNNN.NN.N..N.N..NN......».s
Preae ration...NN....NNNN.N...N•N»N.N.NNNNN«N.•»»».N.••N.»..NNN»NN».N..N»N.... NNNNN.....N..NN.N..N. 2
Influent Flow Equalizatbn•N.•N...N... .NN...N..N.•.NN.N•N.«•N•N•N.N•N•-.•N•N..•••••N.N..•«N•2
Grease or Oil Separators • Gravity-NNNNN.«».......^..«....2
Mechanical! ._. N.N....NNNN...NNN.....NNN..»N.NNNN.....»NN»NNNNN»NNN»»NNNNNNN3
..........N..................
Dissolved Air Flotation N•N•••••••N NN•N►•N•NN•N••••N•N•••N•N.N•N••NN••«NN••NN.N••••N••••N.N-•..NN.a
(i) Prochb111/00n.N•NNN•NN•NN••NN.•NN•N•N•NN•N.•NN•N••NN•.N•NN•NNN•.•N.N•NN•N•N.••.NN.••••NN•N•N•NN•N••N.N...S
PRIfv1ARY11:1EATMENT UNITS/PROCESSES
(a) Septic Tank (see definition No. 43)N.. -- NN Nw»»».N NNN.........NNNN.......NNN.2
(b) Imhoff Ta.NN.N..NN.N..N.NN.NN.N.N.NNNN...NNNNNN.NN.N..NNN..NN...N..NNN..N.NN.N..NN.N..N..N...NN..N.N..5
(c) Primary CIarilIels.•.N.NNNN...N...NN..NNNN.NN.•••••• ••••••N.N...N.NNN.NN.NNNN.N.NNNNNN NNNNNNNN .........•.•••••5
(d) Settling Ponds or Settling Tanks for inorganic Non -toxic Materials (sludge handling facilities for water
purification plants. sand. gravel. stone. and other mining operations except recreational activities such as gem
or gold mining).....N.N.NN.......N..N...N.N.N.NN,.NNN«N.N.N.N.NN.NN»N.N.......N.N .N..N.N.N.......2
SECONDARY TREATMENT
(a) Carbonaceous Stage
(1) AeratIon-High Purity Oxygen Systsm.....NN.N»N..»..N.»..N...N.NNNN.NNNN.NN..N...N..N.......20
Diffused Air System •NN•».N.N NN•«• NN.
Mechanical Alt System (fixed. floating or rotor) N
Separate Sludge Reaerstlon.NNNN.NN.N.N.N.NNNN »......•NN.N.N.N
(l) Trici Ing Met
HighRate........NN.._..._...........N».N.N .NNNN..... N»N.«.7
Standard Rate..NNNN•..N.NN.N...N..N•NN.N..NM..NN.NN•..N.N•.NN......NN.....NN..N...N.NN.NN.5
Packed Tower-•.••N....N.N..... N.NN..NNNNN•WN. N••••-••N••..••5
(l) Biological Aerated Filter or Aerated Biological FilterNN•NN..N,...N»»N.N».NN.N..N.NNNN..•.NN.10
(iv) Aerated Lagoons N•N•NN•N••NNNN.N.N..N.N..N.N.....NN.NNN... N••NN.N.••NNN.10
(v) Rotating Biological Contactors N... ONO. •••N•N..•N••N••.N•N••••NN.N•••..10
(v1) Sand Filters -intermittent biological... _ _ ...N..N.N..N»N. ..N.......NN»».N.NN2
Recirculating biologlcal.....N...NN...N.NNNN.NN•NN.NN.NN....NN.......N......NN..NNN•.NNN..•N..3
fr,
MO Stabilization Lagoons-.».N.NN.N.NNNN..»N.NN.NNN.NN.N.N.NN.»..NN.N.N... N.N.
(vai) aa�ner.N..N...N..NN•.N.NN.MN•N•.NN.N.N.•N.NN.•.N.N•N.... N.N....N....N...•NN•.N•..NN.N
(Ix) Single stage system for combined carbonaceous removal of BOD and nitrogenous removal by
nitrification (see definition No. 12)(Pofnts for this item have to be in addition to Items
(5)(a)(l) through (5)(a)(vill).
utilizing the extended aeration proms (see definition No.3a) N•NN...N......N.....N.....N.N.NN2
utilizing other than the extended aeration process..N..N..NN.NNNNN.............NN.N.N.........•••8
(x) Nuttier* additions to enhance BOD removal..N...-NN..NN.N.N...N.N•N....».NN.N.N..-.N.NN.N-N5
(xl) Blobglcal Culture ('Super Bugs')additbn.N...... N N.NN.N.N.N.N.NN.N.NS
(b) Nitrogenous Stage
(1) AerationmNN.NN..N.....NN...
• High Purity Oxygen 8ysts........NNNNNN ............N.NNN ...N.N..20
Diffused Air System NNN••NN•N•NN•..• N..N..NN.••N•N.NN•N..N.NN....N.NN..N..NNN.N..1 0
Mechanical Air System . (fixed. floating or rotor)NN.N.NN.NN.].N...N...N...N...N••.N.•.N........NN.9�
Separate Sludge Reael P:bn.....N......NN..NN....... ...NON.N.N.N..N....N...N......N•N••NN.i
COTrickling Fl1tsr-High Rate.........--.........NN...NNNN.N....N......:.N...N.NN.N.N...N.N.N-NN-.....N..7
Standard Rate....N........NNN-.N..NNNN..N...N.NN.N.N»N.NNN....N..N....N-NN..N..N.N..«.....N...S
Packed Tower...........N.NNN»NN.................N.NN-.NNNNNN.......NN.NNNNN..N.....N...NNNNNNS
QM • Biological Aerated Filter or Aerated Biological Fliter.N».N»N.NNN•.....N.NNN.N.».....N........NNN10
(Iv) Rotating BlologlcaiContactors••NNN.N». NN
............-.•...•••-•N••10
(v) Sand Filter - Intermittent bbbglcat.........NN........NN....NN..NN..NN.NN•N•N••NN•N•NN•.NN••NOO2
Recirculating biological—. ...N..••N.....N•N« «..-.».•.N....«NN................3
.••.-.....• .....
`I
(v1) Yai.{or •NNN•N••N•NN.N••NN•NN••NN•N•N•N••NN•NN•N•N••N•••.NN• N.N.NN.S
TERTIARY OR ADVANCED TREATMENT WITS/PROCESSES
(a) Activated Carbon Beds -
without carbon regeneration......N.•..•.►NN••..•..N-.N...N-.NNNN.NNN..NN•••NN•N•NN•N•N•NN•••NN••NN5
with carbon regeneration-- «NNNN•»•N•-N••N•N•N--..•..N•.N•.NN..N.N..NN.N.NN15
(b) Powdered or Granular Activated Carbon Feed-
without carbon regeneration....................N.N..NNN..NN...N....N..........N...N.NNN.N.N.....NM..N.M 5
with carbon regeneration ........... ...N•....NN....N...NN..•NN..N.•..
15
(c) Air stripping•....NNN-..NNNNNN•».«......N-....N.•.N....NNNN.NN.N•N.... ...N-N.N- .......6
id) Denttrificatbn Process.NN.-N.NN.N-NN.N.N•...-NN-N.N.N•NN..N.NN.NIN.NN•.N-N-NN..N-..NN• s) • Electrodialysls...N....NN-NN••N.-N•••...-.•-NNINNN--.N•NNN-N•.N...-NN..-...NN..-N•••NN OOP
N.•N•NNN.NNNNNi 0.......N...N.N.•.S
(1) Foam Separation- ...•.NNN.-.•»•N.N.•«.-NN..N.N.N.••..»•N•N.NNN»....NNN.••N........-..N-.NN..N.......N.NN..S
(g) ion Exchange.•NN.-N•NNN......•N.NN•N.NN• ..•N.N.NNN.•-• N.N.N.•..NN•NN.•N••••.N •••••••••••5
(h) Land Application of Treated Effluent (see definition No. 22b) (not applicable for sand. gravel. stone
and other similar mining operations) by high rate Infiltration....N.-N.NNNN.NN........NN.N.......•N....NNN.•......A
i) Microsereens 11) Polishing Ponds -- withoutaerato. -.00 .....NN.-N-PolhiRemovalrous Biological Peooacc�e (See definition IoN-N. ••• M•OOO N•20
••N•N-NNNNNN.NNN...N25
with ae:cation•...NNN...N-.NNN.NN..N.NN.N--NNNNNN..NNN-...-NNNNN...NN....NN.N.N..N--.•.••-...5

(10) CHEMICAL ADDITION SYSTEM(S) ( see definition No. 9) [not applicable to chemical additions rated as Item (3)(j).
Us a)(xi). (6)(a)• (6)(b). (7)(b). (7)(e)• (9a). (9)(b) or (9)(c) 5 points each:
(I) Post Aeration - cascade 0
diffused or mechanical 2
(m) Reverse Osmosis 5
(n) Sand or Mixed -Media Filters - low rate ..... »....»...NN�h ..»....»...-N...»....N.........
»....».........»......2
rate
(o) Treatment processes for removal of metal or cyanide 15
(P) treatment processes for removal of toxic materials other than metal or cyankle...»»................N...»N......»N...•15
(7) SWDGETRI:ATMENT
(a) Sludge Digestion Tank - Heated (anaerobic)
Aerobic
Unheated (anaerobic) -.1'
(b) Sludge Stabilization (chemical or thermal) �5_
(c) Sludge Drying Beds - Gravity N.N-
Vacuum Assisted 5
(d) Sludge Etutriatlon...N-N- 5
(0) Sludge Conditioner (chemical or thermal) 5
(I) Sludge Thickener (gravity) 5
(g) Dissolved Air Flotation Unit [not applicable to a unit rated as (3)(t)) 8
(h) Sludge Gas Utilization (including gas storage) 2
(1) Sludge Holding Tank - Aerated 5
Non -aerated 2
(j) Sludge Incinerator (not Including activated carbon regeneration) 10
(k) Vacuum Filter, Centrifuge. or Fitter Press or other similar dewatering devices.. ..»»... 10
(8) RESIDUALS UTILIZATION/DISPOSAL (including incinerated ash)
(a) Lagoons 2
(b) Land Application (surface and subsurface) (see definition 22a)
by contracting to a land application operator or landfill operator who holds the land application permit
or landfill permit �� (c) • Dedicated Landfill(burtal) by the perrttttee of the wastewater treatment fact!fly...»..... N..»..... ».-».»..»
(9) DISFFECTT:N
(a) Chlorination
(b) Dechiortnation --N. 5
(c) Ozone...----N....... ,...NN N» ... 5
(d) Radiation
.5
(11) MISCELLANEOUS UNtTSIPROCESSES
(a) Holding Ponds. Folding Tanks or Settling Ponds for Organic or Toxic Materials including wastes from mining
operations containing nitrogen or phosphorus compounds in amounts significantly greater than Is common
for domestic wastewater 4
(b) Effluent Flow Equalization (not applicable to storage basins which are inherent In land application systems)2
(c) Stage Discharge (not applicable to storage basins inherent In land application systems)..»»» ..»».»».»»-»N.ct
(d) Pumps
(e) Stand -By Power Supply '-' 3
(1) Thermal Poltutbn Control Device
5
5
5
5
TOTAL POINTS
CLASSPTCATEN
Class I --- ...-..N N.N..N.N.NN.NNN.5-25 Points
Class II N. 26-50 Points
Class III 51-65 Points
Class N -N 66-Up Points
Facilities having a rating of one through four points. Inclusive, do not require a certified operator.
Facilities having an activated sludge process will be assigned a minimum classification of Class IL
Facilities having treatment processes for the removal of metal or cyanide will be assigned a minimum classification of Class IL
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class Ili.
.0004 DEFlNITIONS
The foflowing definitions shaft apply throughout this Subchapter.
(1) Activated Carbon Beds. A phystcaVchemical method for reducing soluble organic material from wastewater effluent; The column -type beds used in this
method will have a flow rate varying from two to eight gallons per minute per square foot and may be either upftow or downflow carbon beds. Carbon may or
may not be regenerated on the wastewater treatment plant site;
(2) Aerated Lagoons. A basin in which all solids are maintained In suspension and by which biotogtcat oxidation or organic matter is reduced through artificially
accelerated transfer of oxygen on a flow -through basis;
(3) Aeration. A process of bringing about intimate contact between air or high purity oxygen In a liquid by spraying. agitation or diffuslon;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 18 hours.
(4) Agriculturally managed site. Any site on which a crop Is produced. managed. and harvested (Crop Includes grasses. grains. trees, etc.);
(5) Air Stripping. A process by which the ammonium ion is first converted to dissolved ammonia (pH adjustment) with the ammonia then released to the
atmosphere by physical means; or other similar processes which remove petroleum products such as benzene. toluene. and xylene;
(6) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatilize and oxidize the
absorbed Impurities;
(7) Carbonaceous Stage. A stage of wastewater treatment designed to achieve 'secondary effluent limits;
(8) Centrifuge. A mechanical device In which centrifugal force is used to separate solids from liquids or to separate liquids of different densities;
(9) Chemical Addition Systems- The addition of chemlcat(s) to wastewater at an application point for purposes of improving solids removal. pH adjustment.
alkallnity control. etc.; the capability to experlment with different chemicals and different application points to achieve a specific result will be considered one
system; the capability to add chemical(s) to dual units will be rated as one system; capability to add a chemical at a different application points for different
purposes will result In the systems being rated as separate systems;
(10) Chemical Sludge Conditioning. The addition of a chemical compound such as lime. ferric chloride. or a polymer to wet sludge to coalesce the mass prior to
Its application to a dewatering device;
(11) Closed Cycle Systems. Use of holding ponds or holding tanks for containment of wastewater containing inorganic, nontoxic materials from sand. gravel.
crushed stone or other similar operations. Such systems shall carry a maximum of two points regardless of pumping facilities or any other appurtenances;
(12) Combined Removal of Carbonaceous BOD and Nitrogenous Removal by Nttrificatbn- A single stage system required to achieve permit effluent limits on BOD
and ammonia nitrogen within the same biological reactor;
(13) Dechtortnation, The partial or complete reduction of residual chlorine in a liquid by any chemical or physical process;
(14) DenItrffication Process. The conversion of nitrate -nitrogen to nitrogen gas;