NC0075388_wasteload allocation_19950103

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:
Havon Rest Home
NC0075388
100 % Domestic
HcistiAg -PCoTase*
Renewal
Pole Creek
C
04-03-02
Buncombe
Asheville
Goris
113/95
EBSW
Request# B8180(A,B)
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7010 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
Staff Report: x 1993
IWC Spreadsheet: x 21.0 mg/1 limit for summer at 0,025 mgd - otherwise monitor
Stream Classification: verify
Instream Data: nr
03.4484.6250
a-9w 3.46
1.0
1.3
3.8
1.8
1.9 % for 0.012 mgd
3.8 % for 0.025 mgd
Modeled w/ Secondary Limits in 1988, (no significant impact shown in model) for a discharge of 0.025 mgd.
Subsequently streamlined in 1993.
Current limits are for both 0.012 mgd and 0.025 mgd. No explanation exists in file as to the reason for this, (I assume
that their A to C was only for 0.012 mgd, but they had a previous permit for 0.025 mgd). I will recommend changes
in the 0.025 mgd permit for a summer ammonia limit of 21.0 mg/I, (monitor in the winter) and a 28.0 µgA residual
chlorine limit.
Staff Report
Operator was incorrectly reading the flow meter at this facility; therefore actual flows were much less,
(refer Part 11, 1, a.)
Explanation of design capacity change in Part III, 4.
DMR's
facility exceeding 80% of 0.0120 mgd on average during numerous months of 1994 and 95.
One fecal and one BOD violation during printout year.

SvN \It3`95 3$)go (Ale)
A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NCO075388
During the period beginning on the effective date of the permit and lasting UNTIL EXPANSION ABOVE 0.012 MGD, 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:
Flow
BOD, 5 day, 20°C
Total Suspended Residue
NI-13 as N
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
DLtz_r1Lgrge Limitations
Monitoring
Requirements
Measurement
S8mp1e
*Sample
Monthly Ava.
Weekly Avg. Daily Max
Frequency
Type
Location
0.012 MGD
Weekly
Instantaneous
I or E
30.0 mg/I
45.0 mg/1
Weekly
Grab
E
30.0 mg/I
45.0 mg/I
Weekly
Grab
E
2/Month
Grab
E
200.0 /100 ml
400.0 /100 ml
Weekly
Grab
E
2/Week
Grab
E
Weekly
Grab
E
- NO
�MI+p+J14 11MYS rL2gVIRQG�
* Sample locations: E - Effluent, I - Influent
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
F4 ae '�

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NCO075388
During the period BEGINNING ON THE EFFECTIVE DATE OF EXPANSION ABOVE 0.012 MGD 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:
Flow
BOD, 5 day, 200C
Total Suspended Residue
NH3 as N
Fecal Colitorm (geometric mean)
Total Residual Chlorine
Temperature
Monthly Avg, Weekly Avg. Daily Max
25
30.0 mg/I 45.0 mg/I
30.0 mg/I 45.0,mg/I
200.0 /100 ml 400.0 /100 ml
* Sample locations: E - Effluent, I - Influent
Monitoring Floquirements
Measurement
Sample
Freauency
Type
Weekly
Instantaneous
Weekly
Grab
Weekly
Grab
2/Month
Weekly
2/Month
Weekly
*L `*Mr2- NM1MpN�q Zl-O (1
wWtCQ- „ ftoNrloyL'
Rc�e..on Rcsrd�uAl CA Ioei.V&
3•a°/. �w�
Grab
Grab
Grab
Grab
*Sample
Location
IorE
E
E
E
E
E
E
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

w
SOC PRIORITY PROJECT: Yes No XX
IF YES, SOC NUMBER
TO: PERMITS AND ENGINEERING UNIT
WATER QUALITY SECTION
ATTENTION: Jeanette Powell
DATE: May 5, 1995
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY Buncombe
PERMIT NUMBER NCO075388
PART I - GENERAL -INFORMATION
1. Facility and Address: Havon Rest Home
NCSR 1220 & 1221
Buncombe County
Mailing Address: Post Office Box 970
Candler, N.C. 29715
2. Date of Investigation: May 3, 1995
3. Report Prepared By: Max L. Haner
4. Persons Contacted and Telephone Number:
5. Directions to Site: Existing facility is located adjacent to
the west side of NCSR 1221 approximately 0.6 mile north of
its intersection with NCSR 1220, in the Robinson Cove Section
of Buncombe County west of Asheville.
6. Discharge Point(s), List for all discharge points:
Latitude: 350 33' 54" Longitude: 820 42' 22"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map. .
U.S.G.S. Quad No. E8SW U.S.G.S. Quad Name Enka, N.C.
7. Site size and expansion area consistent with application?
X Yes No If No, explain:
8. Topography (relationship to flood plain included): Not in Flood
Plain
9. Location of nearest dwelling:- 400 ft (est)
Page 1

10. Receiving stream or affected surface waters: Pole Creek
a. Classification: Class "C", Index No. 6-76-6
b. River Basin and Subbasin No.: French Broad, 040302
C. Describe receiving stream features and pertinent downstream
uses: Agriculture, wildlife
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted .025 MGD
b. What is the current permitted capacity of the Wastewater
Treatment facility? 0.025 MGD
C. Actual treatment capacity of the current facility (current
design capacity 0.012 MGD
ci. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two years:
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: The existing
facility consists of a .012 MGD extended aeration type
wastewater treatment facility with aerobic digester unit,
tablet type chlorination and a 25 gpm pump station with 3430
L.F. of 2-inch forcemain and discharge to Pole Creek.
f. Please provide a description of proposed wastewater treatment
facilities: None proposed to date. Owner plans future
expansion of the rest home which likely will double the size
of the existing system in 3-5 years.
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: N/A
a. If residuals are being land applied, please specify DEM
Permit Number
Residuals Contractor
Telephone Number
b. Residuals stabilization: PSRP PFRP OTHER
C. Landfill:
d. Other disposal/utilization scheme (Specify): Residuals to be
handled by pumping and transport to the Town of Brevard.
Acceptance letter on file.
Page 2

3. Treatment plant classification (attach completed rating sheet):
Class II
4. SIC Codes (s) : 8551, 8059
Primary 11 Secondary
Main Treatment Unit Code: 06007
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. 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: None
PART IV - EVALUATION AND RECOMMENDATIONS
It is recommended that the permit be renewed as proposed. The monitoring
requirements should be unchanged from existing permit.
Signatu a of Report Preparer
X-Ot—Ae
Water Quality Regional Supervisor
Page 3

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RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility: 1)" W07t% Ab,"
Owner or Contact Person:
Mailing Address: P0 gtoX 70
County: 2 wkc"r'�
Telephone:_ C.70" (66 7
Present Classification: 71— New Facility Existing Facility ✓
NPDES Per. No. NC00. 7S3S4? Nondisc. Per. No.WQ_ Health Dept.Per No.
Rated by: _ t' AuiFlfk Telephone: (�� ) LS'/--bzte:
Reviewed by: Health Dept. Telephone:
• Regional Office Telephone: 7o�-2s� :c Lem
Central Office Telephone:
ORC.*4AWaK 1 Grade: _ T L 'telephone: Tod- S'Q'S I & 9
Check Classification(s): Subsurface pray Irrigation Land Application
Wastewater Classification: (Circle One) 1 e
111 IV Totall/Points:
----------------------- — ) ------------
SUBSURFACE CLASSIFICATION
(check all units that apply)
1.
septic tanks
2.
pump tanks
3.
siphon or pump -dosing systems
4.
sand filters
5.
grease trap/interceptor
6.
oil/water_ separators
7.
gravity subsurface treatment and disposal:
8.
pressure subsurface treatment and disposal:
SPRAY IRRIGATION CLASSIRC1.1TION
(check all units that apply)
1.---,preliminary
treatment (definition no. 32 )
2.
lagoons
3.
septic tanks
4.
pump tanks
5.
pumps
6,
sand filters
7_
grease trapfinterceptor
8.
oiVwater separators
9.
disinfection
10.
chemical addition for nutrient/Wgae control
11.
spray Irrigation of wastewater
In - addition to the - above classifications, pretreatment of wastewater in excess of these components shalt
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, uplft88 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 TankfSand Filter Systems consisting only of septic tanks, dosing apparatus, pumps sand filters. 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 Recycle Systems: -�
5. ' Groundwater Remediation Systems consisting only of olUwater separators, pumps. air -stripping. carbon adsorption, disinfection
and' dispos. J;
6 _Aquacutture operations with discharge to surface waters:
7._ _ Water Plant sludge handling and back -wash water treatment;
8. Seafood processing consisting of screening and disposal.
9. Single-family discharging systems. with the exception of Aerobic Treatment Units. will be classified if 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 reclassification by the Commission, in writintj_

The following scale is used for rating wastewater treatment facilities: (circle appropriate points)
REM POINTS
(1) Industrial
Pretreatment Units a Industrial Pretreatment Program (see definition No. 33)...................................................4
(2) DESIGN
FLOW OF PLANT 1N gpd (not applicable to non•conlaminatod cooing waters. sludge handling facilities for
water purification plants. totally closed cycle systems(see definition No. 11). and facilities consisting only of hem
(4)(d) or Items (4)(d) and (11)(d)l
0 - 20.000................................................................................................................................................1
20.001 - 50.000......................................................................................................................................2
50.001 - 100.000...............................................................................................................................3
100.001 - 250.000..................................................................................................................................A
250.001 - 500.000...».............................................................................................................................5
600.001 . 1.000.000................................................................................................................................ e
1.000.001 - 2.000.000...........................................................................................................................10
2.000.001 (and up) rate i point additional for each 200.000 gpd capacity up to a maximum of ................30
0
Design Flow (gpd)
(3) PRELIMINARY UNITS/PROCESSES (see def nklon N0.32)
(a)
Bar Screens .................. ».......................................N.................................................................................. i
(b)
or
Mechanical Screens. Static Screens or Comminuting Devices ......».N.................N............................................2
(c)
Grit Remorral.....».......................................................................................................................................I
(d)
or
Mechanical "Aerated Grit Removal..........................N................................................................................. 2
(0)
Flow Measuring DeYlov ............................................. .................... ............................................... ............... I
(f }
Or
Instrumented Flow Measurement................................................................................................................2
(g)
Preaeratlon.... N.N..................................................N..................................................................................2
(h)
Influent Flow Equalization .N.......................................................................................................................2
(i)
Grease or Oil Separators - Gravity .»... N..............N».»....N...»........._...»....................N...................................2
Mechanical.........».................................................. ...... »........... »...................................................... ........ 3
Dissolved Air FkXatlon................................................. .».........................................................................a
(t)
Prechlodnation........... «........................................N..................................................................................5
(4) PRIMARYTREATMENT UNITSt`PFk3CESSES
(a)
Septic Tank (see definition No. 43)................... N.,.................................................................................... 2
(b)
Imhoff Tank. ..... «... .......................................... «....................».N.........................................................5
(c)
. .. ... ...... .. ........ ................ .... ... .
Primary Clarifiers....... ... ........... .......«... ..........................................................5
(d)
Settling Ponds or Settling Tanks for Inorganic Nontoxic Materials (sludge handling facilities for water
purification plants, sand. gravel. stone, and other minting operations except recreational activities such as gem
orgold mining)........................................................................................................................................2
(5) SECONDARY TREATMENT LWWROCESSES
(a)
Carbonaceous Stage
(I) Aeration -High Purity Oxygen System..............N...............................................................20
DiffusedAir System..................... .................................................................................10
Mechanical Air System (fixed. floating or rotor} .............................. »....................... .......... 8
SeparateSludge Reiteration ........ «.»...... N...................................................................3
Trickling Rker
HighRate ................................. .....N.............»N.N........ N........................................... .....:i
Standard Rate ...................... ..........N.............N«N.............................. ;.................... ........5
Packed Tower .......................... »»....«NN................................................................ ........5
(III) Biological Aerated Fliter or Aerated Biological Filter NN.»N»...N.».:...»N...»N.»»N.«».....».«».10
(iv) Aerated Lagoons ........... .«..... ........ .............. N.«..... ................................................ 10
(v) Rotating B;o4lcal Contactors NN.»................... «........................................................10
(VI) Sand Filters -Intermittent biological ..NN............N... ............................. ............................2
Recirculatingbiological ............... .................... N..............................................................3
(vIi) Stabilization Lagoons ................. »..................................................................................
(vill) ClatYier........................................ ................................................................................. 5
(ix) Single stage system for combined carbonaceous removal of BOD and nitrogenous removal by
nitrification (see det[nhfon No. 12)(Points for this hem have to be In addition to Items
(5)(a)(1) through (5)(a)(vill),
utilizing the extended aeration process (see defirthlon No.3a)..........................................2
utilizing other than the extended aeradon process ......N..................................................B
(x) Nutrient additions to enhance BOO removal......................................................................5
(XI) Biological Culture ('Super Bugs')addhion........................................................................5
(b)
Nitrogenous Stage
(I) Aeration High Purity Oxygen System.»....»...»..........N.................................................20
„
Diffused Air System ..................... .»... ».......................................................................... 10
Mechanical Air System (fixed. floating or rotor) N...»...N.....................................................8
SeparateSludge Reaeration..............................................................................................3
(li) Trickling Filter --High Rate .......... ».«.................................. ................ » ................... N...........7
Standard Rate ............... ........... .»......... »............................................................... ........ 5
Packed Tower ....................... ....NN«...... N......N.............................................................5
(!II} Biological Aerated Filter or Aerated Biological Fliter....................N.NN...I....N......N.....N...N.«.10
(iv) Rotating Biological Contactors ..... .»..N.............».»........................................................10
(v) Sand Filter - Intermittent biological «.....N............... »........................ ................................ 2
Recirculatingbiological ............... .«................... .»...........................................................3
(VI) CfarifW...................... N.......... .... ».................. ........ »....................................................5
(6) TERTIARYORADVANCEOTREA7MMTUNf1S64X)CESSES
(a)
Activated Carbon Beds -
without carbon regeneratlon..... ..»......._....«............... «..».N..N.................................................5
withcarbon regeneration. ...........N....».......».................................................. »....... 16
(b)
Powdered or Granular Actlated Carbon Feast`
withoutcarbon- regeneration ............ »:.....N.............».....«.....................................................5
J
•
+rhh carbon regeneratlon..... .............«.....«.........................................................................15
•�..
(c)
Air slflpping..N..N.»............................................... ».».N.............. N...................................................................................
(d)
Denitiff(callon Process.«............................................N.......»................................................................ »..10
:,=.,•;
If)
Efectrodfalysis....... «..........................................N«.....N..........................................................................5
Foam Separation.................................................... ..... ««..........................................................................
': »=,:';'•.
(gi
Ion Exchange.......................................................... ..... ».................................................................. 5
(h)
Land Applicallon of Treated Effluent (see definition No. 22b) (not applicable for sand......gravel..
and other similar mining operations) by high rate Infiltration ......»...N..............«............................................4
(1)
Mlcroscreens......................................................»N.................................................................................6
(})
Phosphor9gp Removal by Biological Processes (See deRnhlon No. 26)........................................................20
(k)
Polishing, Ponds - without aeration............................................................................................................2

r •
;.r
cascade
•,:' i' -•
(1)
Post Aeration ..............................................................................................................................0
diffused or mechanical........................................................................................................2
(m)
(n)
Reverse Osmosis........................................................................................................................................5
Sand or Mixed -Media Fibers • tow rate.........................................................................................................2
highrate......................................................................5
(o)
Treatment processes for removal of metal or cyanide..................................................................................1 5
(p)
treatment processes for removal of toxic materials other than metal or cyanide ...... ................................. _...... I5
(7)
SLUDGE
TREATMENT
(a)
Sludge Digestion Tank - Heated (anaerobic)...............................................................................................1
Aerobic..................................................................................................................................5
Unheated (anaerobic)......................................................•••...................................---......3
5
(b)
Sludge Stabilization (chemical or thermal) ............................. ......................................................................
(c)
Sludge Drying Beds - Gravity......................................................................................................................2
VacuumAssisted......................................................................................................................................5
(d)
Sludge Eluldallon..................................................................................................•--..............................5
••
(e)
Sludge Conditioner (chemical or thermal) ....................................................... »..........................................5
(t)
Sludge Thickener (gravity).........................................................................................................................5
(g)
Dissolved Air Flotation Unit (not applicable to a unit rated as (3)(1))----------------------------------•-------•-••--•--------•-"
(h)
Sludge Gas Utilization (including gas storage) ....... .................................................................................... 2
(1)
Sludge Holding Tank - Aerated..................:................................................................................................5
_
(j)
Non -aerated ..........{................................................................................................................................2
Sludge Incinerator not Including activated carbon regeneration)................................................... ............ 10
(k)
Vacuum Fher. Centrifuge. or Fiher Press or other similar dewalering 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
(c)
orlandfill permit................................................................................... ........................... .................. 5
Dedicated Landfill(budal) by the permittee of the wastewater treatment facility ............................................
(9)
D1Sf4:ECTICJN
(a)
Chlorination...».......................................................................---......---.....................................................5
(b)
Dechlodnation..........................................................................................................................................5
5
(c)
Ozone ............ .........................................................................................................................................
(d) Radiation.................................................................................................................................................5
CHEMICAL ADDITION SYSTEM(S) ( see definition No. 9) (not applicable to chemical additions rated as item (3)0}.
(10)
(5)(a)(A). (6)(a). (6)(b). (7)(b). (7)(e). (9a). (9)(b) or (9)(c) 5 points each:
List....................................................................................................................................5
MA
V
............................................................................................5
...................................................................................................................................5
.........................................................................................................................5
(11) MISCELLANEOUS UNnWROCESSES�
(a) Holding Ponds. Holding 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 applicaition systems)..».»_.»»...»......»...»..5 .✓
(d) Pumps... ..... ..............................................................................................................................3
(e) Stand-ByPower Supply...................................•..........................................................................................3
(f) Thermal Pollution Control Device.....-............................................................................................3
TOTALPOINTS ..........................................................................
CLASSIFICATION
ClassI.......................................................................................................6-25 Points
Class11..............................................................;..........................................28-50 Points
Classin .................................. ...................................................................... 51-65 Points
Class IV ...................................................................................................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 wig be assigned a minimum classtflcatlon of Class IL
Facilities having treatment processes for the removal of metal or cyanide will be assigned a mirdmum classification of Class 11.
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class Ill.
.0004 DEFINITIONS
The following definitions shall apply throughout this Subchapler.
(1) Activated Carbon Beds. A physlcallchemlcal 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 toot and may be either upilow or downflow carbon beds. Carbon may or
may not be regenerated on the wastewater treatment plant she;
(2) Aerated Lagoons. A basin In which all solids are maintained In suspension and by which biological oxidation or organic matter is reduced through artificially
accelerated transfer of oxygen on a flow -through basis;
(3) Aeration. A process of bdnging about intimate contact between air or high purity oxygen In a liquid by spraying. agitation or dlffuslon;(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.);
(6) Air Stripping. A process by which the ammonium Ion Is first converted to dissolved ammonla (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 Regeneratlon. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatilize and oxidize tits
absorbed Impurities;
_ (7) Carbonaceous Stage. A stage of wastewater treatment designed to achlove 'secondary' effluent Ilmhs;
(8) Centrifuge. A mechanical device In which centrifugal force Is used to separate solids from liquids or to separate liquids of different dons'r.Ias;
(9) Chemical Addhlon Systems- The addition of chemlcal(s) to wastewater at an application point for purposes of Improving solids removal, pH adjustment.
'��i' alkalinity control. etc.; the capabllhy to experiment wfth different chemicals and different application points to achiove a specific result will be considered one
to add chemicals to dual units will be rated as one stem; capability to add a chemical at a different application points for different
system; the capability () Y �f� hY
{? purposes will result In the systems being rated as separate systems;
(10) Chemical Sludge Conditlodng. The addhion of a chemical compound such as time, ferric chloride, or a polymer to wet sludge to coalesce the mass prior to
Its application to a dowatering device;
(11) Closed Cycle Systems. Uso of holding ponds or holding tanks for containment of wastewater containing inorganic.•nQn-toxic materials from sand. gravel.
crushed stone or other slmitai' operations.' Such r:ysloms shall carry a maximum of two points regardless of pumping t�acilRles or any other appurtenances:
(121 Combined Removal of r;ar"nacoous 800 aryl trilmgenous flo+ smoal by Nhdlicatbn- A slnmi•, ri. a system required to achiovo rlm* effluent limits on 800

l • S
(15) Electrodialysls. Process for removing lonlzed salts from water through the use of Ion selective Ion -exchange membranes;
(16) Filter Press. A process operated mechanlcally for panlally dewatering sludge.
(17) Foam Separation. The planned frothing of wastewater or wastewater effluent as a means of removing excessive amounts of detergent materials through
ttte introduction of air In the form of fine bubbles; also called foam fractionation;
(18) Grit Removal. The process of removing grit and other heavy mineral matter from wastewater;
(19) Imhoff Tank. A deep two story wastewater tank consisting of an upper sedimentation chamber and a lower sludge digestion chamber.
(20) Instrumented Flow Measurement. A device which Indicates and records rate of lbw;
(21) Ion Exchange. A chemical process in which Ions from Iwo different molecules are exchanged;
(22) Land application:
(a) Sludge Disposal. A final sludge disposal method by which wet sludge may be applied to land either by spraying on the surface or by subsurface injection '
(La., chisel plow); [not applicable for types of sludge described In (11) of this Rule];
(b) Treated Effluent. The process of spraying treated wastewater onto a land area or other methods of application d wastewater onto a land area as a
means of final disposal or treatment;
(23) Microscreen. A low speed. continuously back -washed. rotating drum fillet operating under gravity conditions as a polishing method for removing
suspended solids from effluent;
(24) Nitrification Process. The biochemical conversion of unoxldized nitrogen (ammonia and organic nitrogen) to oxldzed nitrogen (usually nitrate);
(25) Nitrogenous Stage. A separate stage of wastewater treatment designed for the specific purpose of converting ammonia nitrogen to nitrate nitrogen;
(26) Phosphate Removal. Biological. The removal of phosphorus from wastoohater by an oxldanoxic process designed to enhance luxury uptake of phosphorus
by the microorganisms;
(27) Polishing Pond. A holding pond following secondary treatment with sufficient detention time to allow settling of finely suspended solids;
(28) Post Aeration. Aeration following conventional secondary treatment units to Increase effluent D.O. or for any other purpose;
(29) Post Aeration. (Cascade) A polishing method by which dissolved oxygen Is added to thhe'efftuent by a nonmechanlcaf. gravity means of flowing down a
series of steps cc weirs; The flow occurring across the steps or weirs moves In a fairly thin layer and the operation of the cascade requires no operator
adjustment; thus. zero points are assigned even though this is an essential step to meeting the timhs of the discharge permit*,''
(30) Powdered to Granular Activated Carbon Food. A biophysical carbon process that utilizes biological activity and organic absorption by using powdered or
granular activated carbon; Virgin or regenerated carbon Is feed controlled Into the system;
(31) Preaeration. A tank constructed to provide aeration prior to primary treatment;
(32) Preliminary Units. Unit operations In the treatment process. such as screening and comminution. that prepare the liquor for subsequent major operations;
(33) Industrial Pretreatment.
(a) Pre-treatment Unit. Industrial. The conditioning of a waste at its source before discharge. to remove a to neutralize substances injurious to sewers and
treatment processes or to effect a partial reduction In load on the treatment process which Is operated by the same governing body as the wastewater
treatment plant being rated.
b) Pre-treatment Program. Industrial - must be a State or EPA required program to receive points on the rating sheet;
(34) Primary Clarifiers. The first setift tanks through which wastewater Is passed In a treatment works for the purpose of removing settleable and'suspended
solids and BOO which Is associated with the solids:
(35) Pumps. All Influent. effluent and In -plant pumps;
(36) Radfattom Disinfection or sterilization process utilizing devices emitting ultraviolet or gamma rays;
(37) Reverse Osmosis. A treatment process In which a heavy contaminated liquid Is pressurized through a membrane forming nearly pure liquid free from
suspended solids;
(38) Rotating Biological Contractors. A fixed biological growth process In which wastewater flows through tanks In which a series of partially submerged circular
surfaces are rotated;
(39) Sand Filters:
(a) Intermittent Biological. Filtration of effluent following septic tanks. lagoons. or some •other treatment process In which further blodecomposhlon is
expected to produce desired effluents; Hydraulic loading rates on these filters are computed in gpd/ac and have a resulting low gpm/sf (less than one);
b) Redtcuiaiing biological - the same type of sand filler as defined In Subparagraph (39) (a) of this Rule with its added capability to recycle eflluent back
through the sand finer;
(40) Sand or Mixed -Media Filters. A polishing process by which effluent ilmhs are achieved through a further reduction of'suspended solids;
(a) low rate — gravity, hydraulically loaded filter with loading rates In the one to three gprn/sf range; c
(b) high rate » a pressure, hydraulically loaded filter with bathing rates In the five gpm/st range; At arry rate, the loading rate will exoeed three gpMsf; r`
(41) Secondary Clarifiers. A tank which follows the biological unit of treatment plant and which has the purpose of removing sludges associated with the
biological treatment units;
(42) Separate Sludge Reaetallon. A part of the contact stabilization process where the activated sludge Is transferred to a tank and aerated before resuming It
to the contact basin; r,'"•
(43) Septic Tank. A single -story settling tank In which settled sludge Is In contact with the wastewater flowing through the tank; shall not be' applicable for
septic tank systems serving single family residences having capacity of 2.000 gallons or less which discharge to a nitrification field;
(44) Sludge Dfgestlom The process by which organic ar volatile matter and sludge Is gasified. liquefied, mineralized or converted Into more stable organic matter
through the activity of living organisms. which Includes aerated holding tanks;
(45) Studge Drying Beds. An area comprising natural or artificial layers of porous matedals upon which digested sewage sludge Is dried by drainage and
evaporation:
(46) Sludge Elutdatlon. A process of sludge conditioning in which certain constituents are removed by successive washings with fresh water or plant effluent;
(47) Sftidge Gas lhllizatlon. The process of using sewage gas for the purpose of heating buildings. driving engilies, etc.;
(48) Sludge Holding Tank (Aerated and Nonaerated). A tank utilized for small wastewater treatment plants not contak9ni a digester In which sludge may be
kept fresh. and supematant withdrawn prior to a drying method (Le. sludge drying beds); This may be done by adding a small amount of air simply to keep the .
sludge fresh. but not necessarily an amount that would be required to achieve stabilization of organic matter. A nortaerated tank would simply be used to
decant sludge prior to dewatering and would not allow long periods (several days of detention) without resulting odor problems;
(49) Sludge Incinerators. A furnace designed to bum'sludge and to remove all moisture and combustible materials and reduce the sludge to a sterile ash;
(50) Sludge Stabflizallon (Chemical orThermalj A process to make treated sludge less odorous and putrescbfe, and to reduce the pathogenic organism
content; This may be done by pH adjustment. chlorine dosing. or by heat treatment;
(51) Sludge Thickener. A type of sedimentation tank In which the sludge Is permitted to settle and thicken through agitation and gravity; '
(52) Stabilization Lagoon. A type of oxidation lagoon In which biological oxidation of organlo matter Is effected by natural transfer of oxygen to the waterfront
air (not a polishing pond);
(53) Stand -By Power Supply. On she or portable electrical generating equlpmoM;
(64) Static Screens. A stationary screen designed to remove solids. Including non•blodegradable particulate (floalable solids. suspended solids and ROD
reduction) from municipal and Industrial wastewater treatment systems;
(56) Tertiary Treatment. A, stage of treatment following secondary which Is primarily for the purpose of effluent polishing; A settling lagoon "'sand or coal finer
might be employed for thls purpose;
(56) Thermal Pollution Control Device. A device providing for the transfer of heat from a fluid flowing In tubes to another fluid outside the tubes, or vice versa;
or other means of regulating liquid temperatures;
(57) Thermal Sludge Conditioner. A conditioning process by which heat Is added for a protracted period of time to Improve the dowaterablihy of sludge by the ,
solubllizing and hydraulizing of the smaller and more highly hydrated sludge particles;
(58) Toxic Materials. Those wastes or combinations of wastes.. Including disease -causing agents which after discharge and upon exposure. Ingestion. Inhalatton
or assimilation Into any organism, either directly from the environment or indirectly by Ingestion through food chalet. will cause death. disease. behavioral
abnormalities. cancer. gentle mutationm physiological malfunctions (Including malfunctions In reproduction) or physical deformations. In such organisms or that ,.
offspring; Toxic materials Include. by way of Ilius1ratbn and not limitation: lead. cadrdum. chromium. mercury. vanadium. arsenic. zinc. ortho-rdtro•chlorobenzene
(ONCE). polychlodnatod blphenyts (PCBs) and dlchlorodiphenyl tdchtoroethane (DDT); and any other materials that have or may hereafter be determined to have ;
toxic properties;
(69) Trickling Flier. A biological treatment unit consisting of a material such as broken stone or rock over which wastewater Is distributed; A high rate trickling
finer is one which operated at between 10 and 30 d r acre. A low rate trickling finer Is one which Is designed to ` P m9 per ng slg operate at one to four mgd per acre; .• • , `
(60) Trickling Flier (Packed Tower). A plug flow type of operation In which wastewater Mows down through successive layers of media or 111trate material; OrgaNc
material Is removed continually by the active biological fixed growth In each successive layer. This method may produce'secondarr quality effluentor may be ;
► ' ' adapted to produce a rtitrffled effluent;
(61) Vacuum Flier. Centrifuges. or Finer Presses. 'Seviees which are designed to remove excess water from either digested or undigested sludge prior to disposal
or further treatment.