NC0047384_Authorization to Construct_20000505

-MAY-05-2000 FRI 10:25 AM HAZEN AND SAWYER
FAX NU. 3l d ddddbbb r. uc
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
NCDENR
PROFESSIONAL ENGINEER'S CERTIFICATION
FOR
LONSTRUGTION OF WASTEWATER TREATMENT FACTLITIE
ATC PROJECT NUMMIUIER: 0473S4ACF
T.Z. Ozbornc WWTP
elfg,3),
(Phase onnU
in the State of North Carolina and have been authorized to observe (circle one•
time) the construction of the subject project for the Pcrmittee:
NPDES Permit No. NC0047384
, am a duly registered Professional Engineer
weekly, full
Project No.: 047384ACF
Project: Phase 11l T.Z. O•rhorne WWTP The Division of Water ( iCY Y
Guilford Countyedges receipt and acceptance of
PhaseI1I upgrades and rerating to 24 MGLwitO tificatlof
T,ot ition: Huffine Mill Road
Greensboro
I hereby certify that I did regularly observe this project with due care and diligence and that the
constriction was completed in substantial conformance with the Authorization to Construct and with the
approved plans and specifications.
Registration No.
1 .. _ __...__. _ :' . 1
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— ---•--
Upon completion of construction and prior to operation of the modified facility; the Perntittee shall provide the
Division with ct certification from a professional engineer certifying that the permitted fctciliry hos been installed in
accordance with the NPDL•'S Permit, this Authorization to Construct, and the approved plans and specifications.
The Certification should be submitted to:
NCDENR/DWQ, NPDES Unit, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617

NCDENR
JAMES B. HUNT JR.
GOVERNOR
WAYNE MCDEVITT
SECRETARY
KERR T. STEVENS
DIRECTOR
Arc
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
December 14, 1999
Mr. Allan E. Williams, Director of Public Works
City of Greensboro
P.O. Box 3136
Greensboro, North Carolina 27402-3136
SUBJECT: NPDES Permit No. NC0047384
Authorization to Construct 047384ACF
T. Z. Osborne WWTP, Contracts 1 and 2
Solids Handling and Stand-by Power
City of Greensboro, Guilford County
Dear Mr. Williams:
A letter of request for Authorization to Construct was received September 29,
1999 by the Division and final plans and specifications for the subject project have been
reviewed and found to be satisfactory. Authorization is hereby granted for the
construction of modifications to the existing 22.0 MGD T. Z. Osborne Wastewater
Treatment Plant, with discharge of treated wastewater into South Buffalo Creek in the
Cape Fear River Basin.
This authorization results in no increase in design or permitted capacity and is
awarded for improvements to the solids handling and standby power facilities. The
improvements to the solids handling system include: installation of a new (number 3)
centrifuge, one additional sludge feed pump, one horizontal screw conveyor, support
structure, and all associated equipment, piping, and appurtenances.
The improvements to the standby power facilities include: installation of two (2)
new 4160V, 2000kW generators and associated control equipment, new 5kV switchgear
for connection to the existing system, one (1) 12,000 gal. fuel oil tank, equipment pads,
equipment housing, electrical manholes, conduit and all other appurtenances.
This Authorization to Construct is issued in accordance with Part III, Paragraph
A of NPDES Permit No. NC0047384 issued November 27, 1995, and shall be subject to
revocation unless the wastewater treatment facilities are constructed in accordance with
the conditions and limitations specified in Permit No. NC0047384.
When funding is desired, construction should not proceed until the
Authorization -to -Award package, EEO, and MBE documentation/certification have been
reviewed, and you are in receipt of our approval.
CONSTRUCTION GRANTS & LOANS SECTION
1633 MAIL SERVICE CENTER. RALEIGH. NORTH CAROLINA 27699-1633
PHONE [phone] FAX [phone]
AN EQUAL OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER - SO% RECYCLED/1O% POST -CONSUMER PAPER

Permit No. NC0047384
ATC No. 047384ACF
The sludge generated from these treatment facilities must be disposed of in accordance
with G.S. 143-215.1 and in a manner approved by the North Carolina Division of Water Quality.
In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those as may
be required by this Division, such as the construction of additional or replacement wastewater
treatment or disposal facilities.
The Winston-Salem Regional Office, telephone number [phone], shall be notified
at least forty-eight (48) hours in advance of operation of the installed facilities so that an on -site
inspection can be made. Such notification to the regional supervisor shall be made during the
normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State
Holidays.
Upon completion of construction and prior to operation of this permitted facility, a
Engineer's Certification (attached) must be received from a professional engineer certifying that
the permitted facility has been installed in accordance with the NPDES Permit, this Authorization
to Construct and the approved plans and specifications. Mail the Certification to the NPDES
Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617.
Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of the
wastewater treatment facilities. The operator must hold a certificate of the type and grade at least
equivalent to or greater than the classification assigned to the wastewater treatment facilities by
the Certification Commission.
The Permittee must also employ a certified back-up operator of the appropriate type and
grade to comply with the conditions of Title 15A, Chapter 8A, .0202. The ORC of the facility
must visit each Class I facility at least weekly and each Class II, III and IV facility at least daily,
excluding weekends and holidays, must properly manage the facility, must document daily
operation and maintenance of the facility, and must comply with all other conditions of Title 15A,
Chapter 8A, .0202.
A copy of the approved plans and specifications shall be maintained on file by the
Permittee for the life of the facility.
During the construction of the proposed additions/modifications, the permittee shall
continue to properly maintain and operate the existing wastewater treatment facilities at all times,
and in such a manner, as necessary to comply with the effluent limits specified in the NPDES
Permit.

Permit No. NC0047384
ATC No. 047384ACF
You are reminded that it is mandatory for the project to be constructed in accordance with
the North Carolina Sedimentation Pollution Control Act, and, when applicable, the North
Carolina Dam Safety Act. In addition, the specifications must clearly state what the contractor's
responsibilities shall be in complying with these Acts.
The Operational Agreement between the Permittee and the Environmental Management
Commission is incorporated herein by reference and is a condition of this Permit. Noncompliance
with the terms of the Operational Agreement shall subject the Permittee to all sanctions provided
by G.S. 143-215.6 for violation of or failure to act in accordance with the terms and conditions of
this Permit.
Failure to abide by the requirements contained in this Authorization to Construct may
subject the Permittee to an enforcement action by the Division of Water Quality in accordance
with North Carolina General Statute 143-215.6A to 143-215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from
complying with any and all statutes, rules, regulations, or ordinances which may be imposed by
other government agencies (local, state, and federal) which have jurisdiction.
One (1) set of approved plans and specifications is being forwarded to you. If you have
any questions or need additional information, please contact Cecil G. Madden, Jr., P.E. at
telephone number [phone].
Sincerely,
,e
Kerr T. Stevens '
Director
SDP/nw
DENR - WATER QUALITY
POINT SOURCE BRANCH
cc: Hazen and Sawyer. Raleigh Office (w/o attachment)
Winston-Salem Regional Office. Water Quality Section (w/o attachment)
Technical Assistance and Certification Unit (w/o attachment)
Dave Goodrich, NPDES Permitting Unit (w/o attachment)
DMU (w/o attachment)
SRF (w/o attachment)

WATER
sources
City of Greensboro
Administration
[phone]
Customer Service
[phone]
Water Supply
Mitchell Plant
[phone]
Townsend Plant
[phone]
Water Reclamation
North Buffalo Plant
[phone]
T.Z. Osborne Plant
[phone]
Construction &
Maintenance
[phone]
Water Conservation
[phone]
December 13, 1999
Mr. Larry Coble
NC Dept. of Env. Health & Res.
585 Waughtown Street
Winston-Salem, NC 27107-4600
Dear Mr. Coble:
RECEIVED
N.C. Dept. of EHNR
DEC 1 5 1999
Winstnn-Salem'
Regional Office
Thank you for meeting with us to discuss an interim increase in permitted capacity for the T.Z. Osborne Water
Reclamation Facility. The attached letter and back-up information from our consultant, Hazen and Sawyer,
provides the background and technical support for increasing permitted capacity from 22 to 24 mgd.
We also discussed the City's past and ongoing efforts to appropriately plan for future flow increases and
implement capital projects to reduce flows through I/I reduction and pursue effluent reuse alternatives.
Specific items discussed were as follows:
• A 201 Amendment was prepared in 1991 to support a two -phased plant expansion and upgrade program.
Phase 1 would increase capacity from 20 to 30 mgd and Phase 2 from 30 to 40 mgd. Flows through
planning year 2015 were projected. Maximum month flows for Year 2000 were projected at 23.5 mgd
which is reasonably close to the present maximum month flow rate. This is also the point at which
planning for expansion beyond 30 mgd would be required to begin (80% rule).
• The City began planning for flows beyond 30 mgd as early as 1991, with the previously mentioned 201
Amendment. In July 1995 the City submitted an NPDES permit application for permitted flows of 30 and
40 mgd. The permit was subsequently issued.
• The design of the first phase expansion to 30 mgd, presently under construction incorporates significant
components designed for the 40 mgd capacity including yard piping, distribution boxes and channels,
building space, and some process equipment.
• The City has an ongoing program to reduce of infiltration and inflow (I/I) by finding and repairing the
major source of I/I.
• The City is presently talking with consultants to study its reuse alternatives, which would reduce water
consumption, and dry weather flow to the Creek.
We would like to request that you approve a flow increase up to the 24mgd after the phase 3 facilities of the
Osborne WWTP upgrade is on line. If you have any additional question or need information please call me at
336-375-2240 Ext.258.
Cc: Mr. David Goodrich - NCDENR
Mr. Allan Williams - COG
Mr. Robert S. DiFiore - H&S
Mr. Terry Houk - COG
Mrs. Martie Groome - COG
Yours very truly,
Arthur White
Wastewater Treatment Manager
,qSSetai;�+; TO
T_,7' SZ
DUE DATE - 6... - 0
1505
P. O. Box 3 136, Greensboro, NC 27402-3136 • www.ci.greensboro.nc.us • Fax [phone]

EN AND SAWYER
Environmental Engineers & Scientists
December 13, 1999
Mr. Arthur White
City of Greensboro
2350 Huffine Mill Road
McLeansville, NC 27301
Re: Interim Increase in Permitted Capacity
T.Z. Osborne Water Reclamation Facility
Greensboro, NC
Dear Arthur:
Hazen and Sawyer, P.C.
4011 WestChase Blvd.
Raleigh, NC 27607
919 833-7152
Fax: [phone]
Per your request, we have evaluated increasing the permitted capacity of the T.Z.
Osborne WRF from 22 to 24 mgd with a corresponding 10% decrease in effluent CBOD
and ammonia limits, assuming completion of construction and start-up of Phase 3
facilities associated with the current expansion to 30 mgd. This is another 2 mgd
increase in capacity above previously approved increase to 22 mgd after the Phase 2
facilities were completed. The completion of Phase 3 facilities provides additional
aeration tank volume and other facilities such that the permitted capacity of the plant
may be increased to 24 mgd, The new effluent filters and chlorine contact tank have
been completed under separate contract since the completion of the Phase 2 facilities.
The Division of Water Quality has indicated that concentration based limits for CBOD
and ammonia would be reduced to maintain the same pounds of CBOD and ammonia
that were originally permitted for the 20 mgd design flow. These limits are summarized
as follows:
Permitted
Flow = 20 MGD
Permitted Permitted
Flow = 22 MGD Flow = 24 MGD
CBOD. m.;n Summer 11 10 9
Winter 22 20
18
Ammonia, mg/I Summer 3 2.7 1 ii-
2.5
Winter 6 5.4 5.0
The Osborne WWTP was evaluated for compliance with the above effluent limits for 24
mgd capacity, assuming completion and start-up of Phase 3 facilities as part of the
current expansion to 30 mgd.
Design data for the Osborne WWTP prior to current construction project and after
completion of Phase 3 facilities are summarized as follows:
White 10.26.09
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H AZE,N ..ND
Mr. Arthur White
December 13, 1999
Page 2
Number of Aeration Tanks
Total Volume, MG
Number of Effluent Filters
Filtration Rate, gprr fft2
Number of Chlorine Contact Tanks
Detention Time, min.
Osborne WWTp Prior to Osborne
Phase 3 FacilitieswWTP After
Com feted Phase 3 Facirities
- Corn feted
8
10.18
2
8
13.32
6
1.4
3
48
After Phase 3 facilities are completed, capacity
of the activated sludge process will be
increased by 30%. Capacity added byPhas3 facilities exceeds the requested 10%
increase in permitted flow.
The new facilities in service after Phase 3 construction
listed in attached Table 1. Design calculations are tron are
also included with this letter.
Note that retention time in the chlorine contact tanks
at a permitted capacity of 20 mgd to 48 minutes at a will be increased from 38 minutes
Also, the plant now has the effluent filters in operation.
permitted capacity of 24 mgd.
Let us know if we can provide additional informat10n concerning
in permitted capacity from 22 to 24 mgd the proposed increase
RSD/jhl
cc: Mr. Allan Williams
Ms. Martie Groome
Mr. Alan Stone
Mr. Jim Cramer
White 10.26.39
38
gd after completion of Phase 3 facilities.
Very truly yours,
HAZEN AND SAWYER, P.C.
Robert S. DiFiore, P.E.
Vice President

Table 1
T. Z. Osborne Liquid Train Facilities
Liquid Train Facilities
Facilities @
20MGD
Facilities CP
22MGD
Phase 2
Facilities 9
24MGD
Phase 3
Influent Bar Screens
J
Number of Mechanical Screens
2
4
4
Channel Width
5 ft
5 ft
5 ft
Bar Openings
3/4 in
1/4 in
1/4 in
Influent Wastewater Pumps'
Number of Pumps
4
4
4
Capacity per Pump
6.0 to 16.7 mgd
10 to 25 mgd
10 to 25 mgd
Horsepower per Pump
300
600
600
Firm Capacity
50 mgd
75 mgd
75 mgd
Grit Tanks
Type of Tanks
Aerated
Stirred Vortex Type
Stirred Vortex Type
Number of Total Tanks in Service
2
2
2
Rated Process Capacity Per Tank
—
70 mgd
70 mgd
Preaeration Tanks•
Number
1
1
Total Number of Tanks in Service
1
1
Dimensions
Length
52 ft
52 ft
Width
24 ft
24 ft
Side Water Depth
17 ft
17 ft .
Total Volume
159,000 gal
159,000 gal
Detention Time at Average Flow
10.4 min
9.5 min
Primary Settling Tanks•
Number of Tanks
4
5
5
Number of Rectangular Tanks
4
4
4
Volume of Rectangular Tanks
1,918,000 gal
1,918,000 gal
1,918,000 gal
Number of Circular Tanks
—
1
1
Dimensions of Rectangular Tanks
.
Length
133 ft
133 ft
133 ft
Width
40 ft
40 ft
40 ft
Dimensions of Circular Tank
Diameter
—
115 ft
115 ft
Total Surface Area
21,280 sq ft
31,670 sq ft
31,670 sq ft
Overflow Rate (20 and 22 mgd)
940 gpd/sq ft
695 gpd/ sq ft
758 gpd/ sq ft
Inflow Storage Tank
Number of Tanks
1
1
1
Diameter
185 ft
185 ft
185 ft
Sidewater Depth
15 ft
15 ft
15 ft
Total Volume
3.5 mil gal
3.5 mil gal
3.5 mil gal
10/26/99
1

Table 1
T. Z. Osborne Liquid Train Facilities
Liquid Train Facilities
Facilities @
20 MGD
Facilities @
22 MGD
Phase 2
Facilities
24 MGD
Phase 3
First -Stage Aeration Tanks (See Note t) (Tanks 1-4)
4
105 ft
55ft
20ft
0.86 mil gal
3.46 mil gal
4
212 ft
53 ft
20 ft
1.68 mil gal
6.72 mil gal
0
0
0
0
0
4
105 ft
55ft
20ft
0.86 mil gal
3.46 mil gal
0
0
0
0
0
0
4
272 ft
40.5 ft
20 ft
1.65 mil gal
0
105 ft
55ft
20ft
0.86 mil gal
0
4
212 ft
53 ft
20 ft
1.68 mil gal
6.72 mil gal
4
272 ft
40.5 ft
20 ft
1.65 mil q I
Number of Tanks
Dimensions
Length
Width
Depth
Volume per Tank
Total Volume
Second Stage Aeration Tanks (See Note 1) (Tanks 5- 8)
Number of Tanks
Dimensions
Length
Width
Depth
Volume per Tank
Total Volume
!Additional Single Stage Aeration Tanks (Tanks 9 - 12)
Number of Tanks
Dimensions
Length
Width
Depth
Volume per Tank
Total Aeration Volume (MG)
Detention Time © 20 and 22 mgd (hrs)
10.18
12.22
10.18
11.11
13.32
14.53
Blowers
24,500 scfm
12,400 scfm
N/A
9 -11 psig
4
130 ft
53,090 sq ft
375 gpd/sq ft
14 ft
24,500 scfm
12,400 scfm
24,300 scfm
9 -11 psig
6
130 ft
79640 sq ft
276 gpd/sq ft
14 ft
24,500 scfm
12,400 scfm
24,300 scfm
9 -11 psig
6
130 ft
79640 sq ft
276 gpd/sq ft
14 ft
Capacity of Blowers No. 1 and No. 2
Capacity of Blower No. 3
Capacity of Blower No. 4
Operating Pressure Range of Blowers
Final Settling Tanks
Number of Tanks
Diameter
Total Surface Area
Overflow Rate at Average Flow
Side Water Depth
Return Activated Sludge Pumps
4
30 mgd
150
7
30 mgd
100
7
30 mgd
100
Number of Pumps
Total Firm Capacity
Percent of Average Flow at Firm Capacity
10/26/99
2

LOCATION T.Z. OSBORNE VWVTP - 30 mgd
DATE: 10/25/99 MBTZO24
ANNUAL AVERAGE INFLUENT WASTEWATER CHARACTERISTICS ANNUAL AVERAGE PRIMARY EFFLUENT WASTEWATER LOADINGS
(MAXIMUM MONTH IN PARENTHESES): (MAXIMUM MONTH IN PARENTHESES):
FLOW,mgd: 21.4 ( 24 ) FLOW,mgd: 21.43 ( 24 )
BOD5,mglL: 340 ( 347 ) BOD5, lb/day: 45,572 ( 52,062 )
SS,mg/L: 175 ( 222 ) SS, lb/day: 12,510 ( 17,794 )
TKN,mglL: 30 ( 29.7 ) TKN, lb/day: 5,259 ( 5,831 )
NH3-N,mg/L: 18.5 ( 18.3 ) NH3-N, lb/day: 3,305 ( 3,666 )
TOTAL P,mg/L: 5.5 ( 6.22 ) TOTAL P, lb/day: 934 ( 1,183 )
ANNUAL AVERAGE PRIMARY INFLUENT WASTEWATER LOADINGS
(MAXIMUM MONTH IN PARENTHESES):
FLOW,mgd: 21.4 ( 24.0 )
BOD5, lb/day: 60,763 ( 69,415 )
SS, lb/day: 31,275 ( 44,486 )
TKN, lb/day: 5.361 ( 5,945 )
NH3-N, lb/day: 3,306 ( 3,666 )
TOTAL P, lb/day: 983 ( 1,245 )
ANNUAL AVERAGE RECYCLE STREAM LOADINGS
(MAXIMUM MONTH IN PARENTHESES):
FLOW,mgd: 1.05 ( 1.17 )
BOD5, lb/day: 6,076 ( 6,942 )
SS, lb/day: 3,128 ( 4,449 )
TKN, lb/day: 536 ( 594 )
NH3-N, lb/day: 331 ( 367 )
TOTAL P, lb/day: 98 ( 124 )
ANNUAL AVERAGE ACTIVATED SLUDGE INFLUENT WASTEWATER CHARACTERISTICS
(MAXIMUM MONTH IN PARENTHESES):
ANNUAL AVERAGE % REMOVALS IN PRIMARY TREATMENT FLOW,mgd: 22.47 ( 25.17 )
(MAXIMUM MONTH IN PARENTHESES): BOD5,mg/L: 275.6 ( 281.1 )
SS,mg/L: 83.4 ( 106.0 )
PRIMARY CLARIFIER SURFACE AREA, sq. ft.: 31,920 TKN,mg/L: 30.92 ( 30.61 )
SURFACE OVERFLOW RATE(Max. Month),gpd/sq. ft.: 752 NH3-N,mg/L: 19.40 ( 19.21 )
TOTAL P,mglL: 5.51 ( 6.23 )
BOD5: 25
SS: 60
Organic Nitrogen: 5
NH3-N: 0
TOTAL P: 5
PRIMARY SLUDGE,Ib/day dry solids:
ANNUAL AVERAGE: 18,765
MAXIMUM MONTH: 26,691
25 )
60 )
5)
0)
5)

•
Table 1
T. Z. Osborne Liquid Train Facilities
Liquid Train Facilities
Facilities 4)
20 MGD
Facilities 0
22 MGD
Phase 2
Facilities 4)
24 MGD
Phase 3
Final Waste Activated Sludge Pumps
2
0.6 mgd
4
6 mgd
4
6 mgd
•
Number of Pumps
Total Firm Capacity
Effluent Filters
Type of Filters
Number of Filters
Dimensions
Length
Width
Total Surface Area
Filtration Rate
Effluent Chlorine Feed System
Liquid Chlorine
3500 ppd
2
38 min
52
45
15
0.53 mil gal
Hypochlorite
1000 ppd
2
34.5 min
52
45
15
0.53 mil gal
Traveling Bridge
6
126
16
12096
1.4 gpm/sf
Hypochlorite
1000 ppd
3
48 min
52
45
15
0.80 mil gal
Type of System
Capacity
Chlorine Contact Tanks (See Note 2)
Number of Tanks
Detention Time at 20, 22 and 24 mgd
Dimensions
• Length
Width
Depth
Total Volume
Notes:
1. The existing two stage activated sludge process will be converted to a single
stage process.
10/26/99 3

ACTIVATED SLUDGE DESIGN:
SAFETY FACTOR:
MINIMUM TEMP..degrees C:
MINIMUM OPERATING pH:
MINIMUM D.O.:
OPERATING MLSS,mg/L:
OPERATING MLVSS,mg/L:
YIELD COEFF.,1/day:
DECAY COEFF.:
EFFLUENT SOLUBLE BO05,mg/L:
EFFLUENT TOTAL P, mglL:
EFFLUENT LIMIT FOR TOTAL P, mg/L:
FECL3 REQUIRED, mg/L:
DESIGN SRT,days:
HYDRAULIC DETENTION TIME,hours:
CALC. VOLUME,mil. gal.:
ACTUAL VOLUME,mil. gal.:
% VOLATILE SOLIDS:
INERT FRACTION OF VOLATILE SOLIDS:
EFFLUENT SS,mg/L:
MLVSS FOR SLUDGE PROD. CALC., mg/L:
No. of Aeration Tanks
WASTE ACTIVATED SLUDGE,Ib/day dry solids
(excl. chemical sludge):
ANNUAL AVERAGE: 26,121
MAXIMUM MONTH: 32,794
OPERATING MLVSS, ANNUAL AVERAGE:
ORERATING SRT, DAYS:
MLVSS, mglL:
TRICKLING FILTER SLUDGE NOT INCLUDED.
55.563501
49.610269
2.42
18
7.0
2
2,850
2,138
0.65
0.05
2
3 (
3
(
9.043
12.68
13.30
13.32
75
0.1
10 (
1875 (
5
10
2,003
)
)
10 )
1875 )
WAS Sludge Production Estimates
Intl. BOD-5 (to aeration),mglL
Q, mgd
BOD-5 Removed, mglL
Ibs. BOD-5 Removed
Yield Coefficient
lbs. VSS Produced
MLVSS, mg/L
Vol. Aeration Tank, mil. gal.
Total Active Ibs. in System
Decay Coefficient, kD
Ibs. VSS Destroyed •
Infl. TSS, mg/L
Fraction Nonvolatile
lbs. Nonvolatile Solids
Fraction Nondegradable
Volatile Solids
Ibs. Nondegradable
Volatile Solids
Effl. TSS, mg/L
Ibs. Effluent Solids
Ibs. Total Solids Production, excl.
Chemical Sludge(Ib/day)
Ibs. Chemical Solids
lbs. Total SecondarySolids Production
(Ib./day)
lbs. Total PrimarySolids Production
(IbJday)
Ibs. Total Solids Production
(IbJday)
'Upper limit of 0.4 times yield.
MBTZO24
Annual Ave. Max. Month
per Day per Day
275.55 281.06
22.47 25.17
273.55 279.06
51273.56 58583.31
0.65 0.65
33,327.81 38,079.15
1,875.00 1,875.00
13.32 13.32
208,291.50 208,291.50
0.05 0.05
10,414.58 10,414.58
83.43 105.95
0.25 0.25
3,909.38
0.10
1,172.81
10.00
1,874.38
26,121
0
26,121
18,765
44,886
5,560.70
0.10
1,668.21
10.00
2,099.28
32,794
0
32,794
26,691
59,486
c.