NEIC
REPORT ON
POLLUTION FROM MAJOR 1IUNICIPAL WASTE SOURCES
IN
DADE COUNTY, FLORIDA
National Enforcement Investigations Center. Denver
U.S. Environmental Protection Agency
Office of Enforcement
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REPORT ON
POLLUTION FROM KAJOR MUNICIPAL WASTE SOURCES
IN
DADE COUNTY, FLORIDA
Prepared by
ENVIRONMENTAL PROTECTION AGENCY
WATER QUALITY OFFICE
DIVISION OF FIELD INVESTIGATIONS
DENVER, COLORADO
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TABLE OF CONTENTS
Title Page
LIST OF TABLES ii
LIST OF FIGURES Ill
INTRODUCTION 1
SUMMARY AND CONCLUSIONS 4
RECOMMENDATIONS 7
POLLUTION FROM MAJOR MUNICIPAL WASTE SOURCES 8
Snake Creek Drainage 9
Biscayne Canal and Little River Drainage 12
Miami River Drainage 13
Coral Gables Waterway Drainage 13
Snapper Creek Drainage 14
Black Creek Drainage 14
South Bay Drainage 15
Direct Ocean Discharges 15
APPENDIX A
Data on Individual Major Municipal Waste Treatment Plants
in Dade County, Florida.
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LIST OF TABLES
Following
No. Title Page No.
1 SUMMARY OF INVENTORY INFORMATION AND ABATEMENT
NEEDS FOR WASTE TREATMENT PLANTS IN DADE COUNTY,
FLORIDA 9
2 TOTAL LOADS OF POLLUTANTS DISCHARGED BY
MUNICIPAL WASTE SOURCES, DADE COUNTY, FLORIDA 9
3 MAJOR INDUSTRIAL WASTEWATER DISCHARGES TO THE
MYRTLE GROVE WASTEWATER TREATMENT PLANT 10
A-l AVERAGE EFFICIENCIES AND LOADINGS FOR
INDIVIDUAL MUNICIPAL WASTE SOURCES, DADE COUNTY,
FLORIDA - BIOCHEMICAL OXYGEN DEMAND AND TOTAL
SUSPENDED SOLIDS 17
A-2 AVERAGE EFFICIENCIES AND LOADINGS FOR
INDIVIDUAL WASTE SOURCES, DADE COUNTY, FLORIDA -
CHEMICAL OXYGEN DEMAND AND TOTAL ORGANIC CARBON .... 17
A-3 AVERAGE EFFICIENCIES AND LOADING FOR INDIVIDUAL
WASTE SOURCES, DADE COUNTY, FLORIDA - VOLATILE
SUSPENDED SOLIDS AND SETTLEABLE SOLIDS 17
A-4 AVERAGE CONCENTRATIONS AND LOADINGS FOR
INDIVIDUAL MUNICIPAL WASTE SOURCES, DADE COUNTY,
FLORIDA - NITROGEN, PHOSPHORUS, AND CHLORIDES 17
A-5 MEDIAN MPN AND AVERAGE OF FIELD OBSERVATIONS FOR
MUNICIPAL WASTE SOURCES IN DADE COUNTY, FLORIDA .... 17
ii
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LIST OF FIGURES
Following
No. Title Page No.
1 LOCATION OF MAJOR MUNICIPAL WASTE SOURCES,
DADE COUNTY, FLORIDA . 8
iii
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I. INTRODUCTION
On October 22, 1970, the Dade County Enforcement Conference was
held, with representation by the State of Florida and the FWQA. The
conclusions and recommendations of the conference which are pertinent
to a discussion of major municipal waste sources were:
1. That there is pollution of the navigable waters in and
adjacent to Dade County, Florida, that this pollution
endangers the health and welfare of persons, and is subject
to abatement under the Federal Water Pollution Control Act.
2. That this pollution is caused by discharges from numerous
-municipal, domestic, and industrial sources within Dade
County.
3. That a minimum of secondary treatment, with at least 90 percent
BOD removal and year-round chlorination of the effluent,
should be provided for all wastes, as required by the State
of Florida, before discharge to the ocean. This should be
accomplished as rapidly as possible, but not later than
January 1, 1974.
4. That all new construction be connected to adequate sewage
collection and treatment systems.
5. That additional waste discharges to Lower Biscayne Bay,
including Biscayne National Monument and its tributaries,
be prohibited.
6. That an inventory of municipal and industrial wastes sources
within Dade County, Florida, be initiated immediately by the
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Federal Water Quality Administration, in cooperation with
the State of Florida and local officials, and that a report
be made to the Conferees by April 1, 1971.
This report summarizes information gathered during the inventory
of major municipal waste sources within Dade County; evaluates the
results of chemical and field sampling of both influent and effluent
from these waste sources, with respect to removal efficiencies; and
recommends certain actions which will lead to the abatement of pollution
of the waters of Dade County by these major municipal waste sources.
Specific objectives of the survey were as follows:
1. To obtain an up-to-date inventory of major municipal waste
treatment facilities within Dade County.
2. To evaluate these treatment facilities to determine their
capabilities for at least 90 percent removal of wastes.
3. To present recommendations for improvement in operation of
these treatment facilities.
Twenty-seven plants were surveyed during the periods November 28,
1970 to December 20, 1970 and January 3, 1971 to February 3, 1971. The
location of the plants is shown in Figure 1. These plants serve
a population of approximately 702,000 with a total flow of 64.3
MGD. The remainder of the County is served by either individual
septic tanks or by connection to the North Miami and Miami Beach
ocean outfalls. A total of approximately 37 MGD of untreated wastes
is discharged through the two ocean outfalls. The exact population
served by each is undetermined since sewer systems are under construction
and flow through the ocean outfalls is increasing rapidly.
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Removal efficiencies, based on 24-hour composites, were calculated
for various waste related chemical parameters and effluent samples
were analyzed for nitrogen compounds, total phosphorus, and chlorides.
Grab samples of the effluent were collected and analyzed for chlorine
residual, pH, and total and fecal coliform.
Representatives of the State of Florida Air and Water Pollution
Control Agency and Bade County Pollution Control participated with
the Division of Field Investigations - Denver Center, and the Lower
Florida Estuary Study, Environmental Protection Agency, in the conduct
of the waste source survey. Laboratory assistance was provided by
the Division of Field Investigations - Cincinnati Center.
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II. SIMIARY AND CONCLUSIONS
Sixteen of the 27 wastewater treatment facilities surveyed employ
some form of the activated sludge process as secondary treatment, five
plants have trickling filter systems, and the remainder have combinations
of activated sludge and trickling filters. Three treatment plants
use microstrainers to provide additional treatment after conventional
secondary treatment, two plants employ "Jetflo" tertiary systems,
and three plants have oxidation lagoons following mechanical treatment.
The plants employing an activated sludge process generally provided
the higher degree of treatment.
Eleven plants, or 41 percent of the total, provided in excess of
90 percent removal of BOD, five plants provided removals in the
range of 85 to 90 percent, and six plants were in the range of
30 to 85 percent. The remainder, 19 percent, provided removals less
than 80 percent. Six plants, or 22 percent, removed more than
90 percent of total suspended solids, eight plants removed from
35 to 90 percent, and three plants removed from 80 to 35 percent
suspended solids. The remainder, 36 percent, provided less than 80
percent removal. One plant removed more than 90 percent of the total
organic carbon, and six plants provided removals ranging from 85 to
90 percent.
Five plants, or 19 percent of those surveyed, provided removals
greater than 90 percent for both biochemical oxygen demand and suspended
solids. These plants were: llyrtle Grove, Palm Springs North Subdivision,
Seaboard Industrial Park, South Dade Farm Labor Camp, and Redlands
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Farm Labor Camp. These plants discharge approximately 2 percent of the
total municipal wastewater and approximately 10 percent of the discharge
to inland surface waters. Thus, 98 percent of the municipal wastewater
receives inadequate or no treatment.
In the northern area of Dade County, major municipal wastes
contribute a total flow of approximately 7 MGD, which is 30 percent
of the total flow to inland waters, and a daily loading of 1,153
pounds biochemical oxygen demand and 3,429 pounds suspended solids
to the Snake Creek and its tributaries. .The daily pollutional load
to the lliami River, from major municipal waste sources, was only 75
pounds of biochemical oxygen demand and 135 pounds suspended solids,
and the sources contributed less than one percent of the total flow
to inland waters in Dade County. These low pollutional loads and
flows to the lliami River are not considered significant.
In the southern area of the county, major municipal waste sources
contribute significant daily pollutional loads and flows to the following
drainages:
1. Coral Gables Waterway, 260 pounds biochemical oxygen demand
and 570 pounds suspended solids, with a flow of 2.6 1IGD.
2. Snapper Creek, 1,800 pounds biochemical oxygen demand and
2,300 pounds suspended solids, with a flow of 5.9 1ICD.
3. Black Creek, 860 pounds biochemical oxygen demand and 2,300
pounds suspended solids, with a flow of 3.7 HGD.
4. South Bay, 580 pounds biochemical oxygen demand and 950
pounds suspended solids, with a flow of 3.5 IICD.
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The Carol City, !!yrtle Grove, Community Utilities, and the lliami
Lakes Utilities wastewater treatment plants are scheduled to be closed
during 1971. Present waste flows from these plants, except Community
Utilities which will discharge to the Virginia Key plant, are to be
discharged, without treatment, to ocean outfalls. The closing of
these plants is inconsistent with the conference recommendation that
secondary treatment with a minimum of 90 percent BOD removal be provided
all wastevater prior to discharse into the ocean.
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Ill. RECOMMENDATIONS
To abate the existing pollution of the inland waters of Oade
County and of the Atlantic Ocean by major municipal waste sources,
the following actions are recommended:
1. That a regional treatment system be developed for the urban
area of Dade County, which would insure secondary treatment
of all domestic wastes, with removal efficiencies not less
than 90 percent, and with disposal of treated effluents
to the ocean.
2. That all wastes being discharged from the North Miami and
the Miami Beach Ocean Outfalls be given secondary treatment,
with at least 90 percent removal of BOD and suspended solids.
3. That the present plan to abandon the Carol City, Myrtle Grove,
and the Miami Lakes Utilities wastewater treatment plants,
with subsequent discharge, without treatment, to ocean
outfalls, not be allowed until secondary treatment is
provided to all ocean discharges.
4. That the City of Miami Virginia Key plant be upgraded
to accomplish a minimum of 90 percent removal of BOD and
suspended solids.
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IV. POLLUTION FROM MAJOR MUNICIPAL WASTE SOURCES
Twenty-seven major municipal waste treatment facilities and
two ocean outfalls were surveyed during the periods November 28 to
December 20, 1970, and January 3 to February 2, 1971. Average
flows ranged from 0.024 MOD to 47.0 MGD. The location of each
plant is shown in Figure 1. For the waste treatment facilities,
removal efficiencies, based on five 24-hour composites, were calculated
for 5-day biochemical oxygen demand (BOD), chemical oxygen demand
(COD), total suspended solids (TSS), volatile suspended solids (VSS),
total organic carbon (TOC), and settleable solids (SS). In addition,
the effluent samples were analyzed for nitrogen compounds, total
phosphorus, and chlorides. Crab samples of the effluent were collected
and analyzed for chlorine residual, pH, and total and fecal colifora.
The 24-hour composites were collected using either Serco automatic
samplers or Sirco electric samplers. The Serco sampler collected
approximately 400 ml of sample hourly over a 24-hour period. A 200
ml aliquot from each individual sample made up the 24-hour composite
sample. The Sirco electric sampler collected a 100 ml sample every
30 minutes and deposited this aliquot in a 2-gallon bucket which
was emplaced in ice. Field measurements of pH and temperature were
taken of both influent and effluent grab samples at the time that
the automatic samplers were serviced. Grab samples of the effluent
were utilized to determine chlorine residual as well as total and
fecal coliform.
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Each plant was inventoried and evaluated for performance. Design
information was provided by the plant management. Where possible,
laboratory results were discussed with plant operators to determine
the reason for any discrepancies in removal efficiences and to compare
data collected during the survey with data collected routinely by
the plant operators. An evaluation report was prepared for each
waste source surveyed.
An inventory of the municipal waste sources surveyed including
a statement of pollution abatement needs, is given in Table 1. Five of
the plants surveyed were operating satisfactorily. Six plants were
hydraulically overloaded, but the removal efficiencies appeared to be
affected in only three of these plants. Flow meters malfunctioned in
six of the plants surveyed (inaccurate, incorrect placement, etc.);
seven plants did not provide adequate chlorination; and five required
addition or enlargement of treatment facilities.
Appendix A (Tables A-l through A-5) provides detailed information
on average influent and effluent concentrations, removal efficiencies,
and loads for the various parameters measured during the survey. Table
2 summarizes the total load contributed by the waste sources to each
major drainage area. A discussion of significant probems associated
with the individual waste sources, in each drainage area, follows:
A. Snake Creek Drainage
Daily BOD removal efficiencies at the Carol City wastewater
treatment plant varied from 73.5 to greater than 97.3 percent, and
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I Snake CreeK
,Biscayne Canal 8
Little River Canal |
I
Coral Gables Waterwa
Snapper
Creek
LOCATION OF MAJOR WASTE
SOURCES
,
Figure 1. Lortlion of Municipal Waste Sources Dade Countv, Florida
DIVISION or FIELD INVESTIGATIONS • DENVER CEN-E
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Table 1.—Summary of Inventory Information and Abatement Needs for Haste Treatment Plants in Dade County, Florida
Popula- Removal
llap.. Actual Flow tlon Efficiency
Key=- Name of Source and Address Design Actual Served 2 BOD
Type of Treatme
nt*'
Effluent Discharged to Remarks and Abatement Needs
Snake Creek Drainage
2 Andover 1.700 1.714 8.600 34.0
IIW 2nd Ave. and 200t!i St.
'Carol City
3801 Nil 131st St.
Rivcrdalc tstates
3150 !IW 203th Terrace
Golden Isles
2459 NE 204th St.
ilyrtle Grove - City of
II. idami Beach
NW 179 St. and MW 21st
Country Club of I Hani
6801 :n: 186th St.
3.500 2.030 17,000 82.5
0.875 0.362 3,500 35.0
0.500 0.642 6,000 82.4
4.000 1.645 21,000 91.8
0.200 0.185 2.000 94.5
4 Palm Springs North S.U. 0.750 0.447 0,000 92.8
7900 Nil 173th St.
Comri., conp. mix act. sludge, Snake Creek
raicrostrainer, 2-stage aerobic
digester, sludge dewatcr
Comm., pri. clar., comp. mix
act. sludge 2-stage aerobic
digester, liquid sludge
disposal
Comm., comp. mix act. sludge,
aerobic digester liquid
sludge, disposal
Preclilorinatlon, cont. staii.,
reaeratlon, (diffused air)
2-stage aerobic dlgestor,
sludge drying
Grit chamber, pri. clar., comp. Carol City Canal B
mix act. sludge, anaerobic
digestor, liquid sludge
disposal
Carol City Canal
Snake Creek
Oleta River
Bar screening, cont. stab.,
reaeretion (diffused air),
2-stage aerobic digester,
liquid sludge
Bar screen, pri. clar., act.
sludge (diffused air), Jetflo
system, anaerobic dlgestor,
sludge drying beds
77th Ave. Canal
77th Ave. Canal
Correction of flow meter.
Plant scheduled to be
abandoned during 1971.
Additional treatment
facilities.
Enlargement of facilities,
additional facilities,
improved chlorlnatlon.
Plant scheduled to be
abandoned during 1971.
Improved lagoon maintenance.
None
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Table 1.—Summary of Inventory Infomation and Abatement Meeds for Waste Treatncnt Plants In Dade County, Florida—Continued
iiap..
-
Popula- Removal
Actual Flow tion Efficiency
'.tone of Source and Address Design Actual Served 2 BOli
Type of Treatment-
Effluent Discharged to Remarks and Abatement Needs
10
12
11
13
14
Siscaync Canal and Little
niver Canal Drainage
:ilami Lakes Utilities; 0.95C 0.727 1.330
14045 :ni 67tU Ave.
Seaboard Industrial Park 0.174 0.117 ilA-
;IW 112tii St. and 3bth Ave.
Opa Locka Airport - Dadc 1.500 .133 :iA-
County Port Authority
I'.iami River Drainage
Atomic Sewerage
6900 HW 5uth St.
0.072 0.024 IIA-'
Joral Country Club 0.170 0.215 1,500
:iU 50th St. and 'J2nd Ave.
Coral Cables Untcn:ay
Lil1 <\uncr Trailer I'ark 'J.150 O.u72 1.6J-J
11185 M. Flagler St.
Pan -'jnericau Hospital
5'J59 !.1.' 7th St.
0.036 O.J30 .U-
-
79. G
95.0
S'J.'j
90.1
W.I
J7.u
Coi:im., diffused air, rcaer-
ation, aerobic disostor.
sludge disposal
Bar screen, coinp. mix. act
sludge aerobic digcstor,
sludftc drying beds
Jar screen, pri. clar., trick
filter, aerobic digester,
sludge drying beds
Sur^i! tanU, pri. clar.,
diffused air, 3-cell. oxlJ.
lacoon, anaeroulc dij-estor,
sludge dr-'iiip, beds
Diffused air, reaeratlon,
aerobic digester, sludge
drying bcdn
133t'u Street Canal
Little I'.iver Canal
Uiscaync Cnnal
F.C.C. Canal
urcssels Dairy Canal
Cor.mi., diffused air,
reaeratlon, oxiu. lagoon,
aerobic digester, lii.ui.1
sludge disposal
Surge tank, diffused air, equal. Tar.'ia-ii Canal
tan1:, Jetflo systeri, lir,ui.c!
sludf.c disposal
Plant scheduled to be
abandoned during lt'71.
ilone.
Improved chlorination,
improved lift stations.
None.
Audition of flo-.; meter,
improved chlorination,
operator training, improved
laboratory.
Improved laboratory, operator
training.
Additional treatment
facilities.
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Table 1.—Summary of Inventory InfomaCion and Abatement VJecds for Waste Treatment Plants in Cade County, Florida—Continued
ilap .
Keyi'
15
19
17
tin me of Source and Address
Community Utilities
7811 SU 23rd St.
Snapper Creek Drainage
Peninsular Utilities
SW 9 7 tli Ave. and
Kendall Dr.
Southern Instates
11955 SU 34th St.
Actual
Design
2. 050
3.000
1.050
Flow
Actual
2.471
2.500
1.42C
Popula-
tion
served
21.800
25,700
2,500
Itemoval
Efficiency
Z ROD
04.4
39.5
70.1
Type of Treatnent—
Pri. clar. , conp. mix act.
sludge, liquid sludge
disposal
Goran., pri. clar., corap. mix
ace. sludge, sludge thick.
tank, 2-stagc aerobic
digester, liquid sludge
disposal
Coma., camp, mix act. sludge,
30Z to clar.. trick, filter
Effluent Discharged to Remarks and Abatement t!cedi
Feeder Canal to Coral Plant scheduled to be
Cables Waterway abandoned during 1971.
Snapper Creek None.
Feeder Canal Co Elimination of infiltration
Snapper Creek
18 Westwood Lakes
4801 SU 117th Ave.
Black CreeU Drainage
21 South Iliarai Heights
SU 117th Ave. and U.S.
Ih/y. 1
22 Cutler Ridge
Anchor Road and Puerto
Rico Terrace
20 iiell-Aire S.I).
Quail Roost and U.S.
ll-.;y. 1
2.0 1.970 22,700
74.0
aerobic digestor, sludge
drying beds
1. pri. clar.. trick, filt.
2. Comp. mix act. sludge,
stabilization tank, 2-stagc
aerobic, liquid sludge disposal
Snapper Creek
Improved operation.
1.750 1.0G9 13.000
4.000 2.TJ5 20,000
0.525 0.423 5.UOO
92.2
80.5
77.8
Conm., pri. clar., diffused air, Feeder Canal to Black
2-stage aerobic digestor. Creek
liquid sludge renewal
Comp. nix act. sludp.e, 2-stage
aerobic digestor sludge drying
beds
Comni., grit chaiibcr, pri. clar.
tick, filter, microstrainer,
sand filter, aerobic dip.estor,
liquid sludge disposal
Cell-Alre Canal
Bell-Airc Canal and
subsurface
Additional flow meter,
outfall modification.
Improved chlorination
Improved chlorination.
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Table 1.—Summary of Inventory Information and Abatement Needs for t.'aste Treatment Plants in Dade County, Florida—Continued
Popula- Renewal
'.lap, i Actual Flow tion Efficiency
Key=- Mane of Source and Address Design Actual served 2 BOD
Type of Treatment-
Effluent Discharged to Remarks and Abatement tleeds
Soutii Bay Drainage
23 Homestead Air Force Base 1.150 2.116 2,000 63.7 Prl. clar., trick, flit..
Homestead Air Force Base anaerobic dip.estor, sludge
drying beds
27 City of Homestead
SVI 328th St. and U.S.
liwy. 1
26 Soutii Uadc Labor Corp.
SU 312th St. and S'..1
14 7 tli Ave.
24 Red lands Labor Caap
2935S S. Federal lluy.
25 Leisure City
Kings Itwy. and Ilaraja
Road
Atlantic Ocean
16 Virginia Key-City of
:iiani
Virginia Key
1.950 0.393 10,000 32.7
0.100 0.126 1,350 93.9
•J.100 0.057 1,253 90.6
0.630 0.296 9,000 36.0
47.00 40.30 500,000 70.3
1. Pri. clar., trick, flit.
2. Diffused air, anaerobic,
acro'uic digesters, sludgu
drying beds
Imiioff tank, trick, filter.
microstrainer
Imiioff tank, trick, filter,
microstrainer
Conirn., mech. aeration, re-
aeration, sand filters,
2-stagc aerobic digestor
sludge drying beds
Aerated grit chamber, diffused
air nigh-rate act. sludge,
sludge drying beds
Military Canal
C-103 Canal
Elimination of Infiltration.
operator training, improved
laboratory support,
additional treatment
facilities.
Calibration of flow measuring
device.
Feeder Canal to C-103 Flow meter modification
Canal
SuJjurfacc
Subsurface
laboratory facilities,
improved clilorlnation,
operator training. Plant
design review.
Repositioning of flow meter,
laboratory facilities,
improved chlorlnation,
operator training plant
design review.
Improved operation.
aiscayne Day
Additional treatment
facilities, improved
chlorlnation. Additional
treatment.
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Table 1.—Summary of Inventory Info nation and Abatement IleeJs for Waste Trcatoent Plants in Dade County, Florida—Continued
Popula- removal
Actual Flow tion Efficiency 2-
Name of Source and Address Design Actual Served J. BOU Typo of Treatment— Effluent Discharged to Remarks and Abatement Needs
23
29
I'iami Beach
lliani Beach
Sunny Isles
- Preliminary Treatment—
4/
- - - - Preliminary Treatment—
- - - - Preliminary Treatment-
Atlantic Ocean
Atlantic Ocean
Atlantic Ocean
Additional Treatment
Additional Treatment
Additional Treatncnt
I/ Refers to nunbered locations slioun in Figure 1.
2J Includes secondary clarification and disinfection.
2/ Hot applicable.
Itl Preliminary Treatment consists of skinming floatable solids in a primary clarificr. Tiii_ settled sludge is rcconbined witli the supernatant.
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Table 2.--Total Loads of Pollutants Discharged Ly Municipal l.'astc Sources, Bade County. Florida
Drainage System
Snake Creek Drainage
Uiscayne Canal and Lictlc
niver Drainage
liiami lUver Drainage
Coral Cables Wat en/ay
Snapper Creel; Drainage
Black Creek Drainage
South Bay Drainage
Atlantic Ocean
Ilumber
of
plants
7
3
2
3
3
3
3
4
Flow
:icn
7.025
1.027
.239
2.570
5.89G
3.453
3.135
77.100
BOD
Ib/day
1,153
344
75
264
1.014
857
575
54,164
COD
I'd /day
5,722
2.C29
416
1.270
5.610
2.207
1,998
220,441
TSS
Id /day
3,429
366
135
571
2.291
2,264
948
48.561
VSS
Ib/day
1,868
214
101
454
1,947
1,193
403
54,553
TOC
l'.i/day
1.7UG
462
114
352
1,723
860
632
35,402
Kjcldalil 1
1'o/day
1,060
119
23
331
1.001
408
174
13.105
Amaonia '.'•
as U
Ib/dav
884
92
11
312
356
327
125
9.263
Organic N
as N
Ib/dav
176
29
12
20
150
81
52
3,842
as N
Ib/day
227
48
3
94
14
29
163
30
Total P
Ib/day
582
101
15
159
493
322
219
5,108
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10
suspended solids efficiencies varied from 61.3 to 91.5 percent. At
the time of the survey, it was standard procedure to operate only
three of four mechanical aerators in each aeration tank. Prechlorination
of the influent was also practiced during part of the survey. After
the survey plant officials performed an inplant analysis which indicated
sufficient dissolved oxygen could not be provided by operating only three
mechanical aerators and that there was Inadequate settling in the
secondary clarlfiers. To solve these problems, four mechanical aerators
are now operating in each aeration tank, and alum is introduced prior to
flow into the secondary clarifiers.
The Myrtle Grove wastewater treatment plant provide BOD and
suspended solids removals in excess of 90 percent. This plant receives
an estimated 0.25 MGD of industrial waste. These industrial wastes include
discharges from plating operations, milk processing, and dye processing.
The plant has received industrial "slugs" which have interferred with
the treatment. No difficulties of this type were experienced during
the survey. The influent was discolored on several occasions, i.e.
green, red, black, etc. indicating the presence of dye. However,
this resulted in no apparent problems in treatment.
An industrial waste survey was conducted under private contract
of industries discharging to the plant. The report on that survey
was not available to the EPA staff at the time of this municipal
waste source evaluation. Table 3 lists some of the major industries
discharging to the Myrtle Grove plant. These industries were visited
during the recent industrial waste source survey conducted by the
EPA.
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Table 3.—Major Industrial Uastewater Discharges to the
Myrtle Grove Hastewater Treatment Plant
Water
Industry Products or Processes Gallons per
Month
Aluminine, Inc. Aluminum grills 184,000
Anodyne Lithograph and silk screens 930,000
Atlas Metal Industry, Inc. Computer and Food Processing 808,000
Equipment
Miller Industry, Inc. Aluminum sliding doors, 325,000
grills, etc.
Perkins Marine Lamp & Marine Hardware 1,379,000
Hardware Corp.
Sealtest Food Products Dairy Products 3,087,000
Velda Farms Dairy Products
T7Water use figures supplied by the North Itiami Beach Utilities, Water
Department.
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11
The Golden Isles waste treatment plant provided 82 percent and
80 percent removal of BOD and suspended solids, respectively. However,
suspended solids removals were greater than 90 percent on four of
the five days of the survey. On the one day when removals were low,
a malfunction in the pumping station caused a surge in the influent
flow and subsequent solids overflow into the effluent. The primary
problem at this plant is hydraulic and organic overloading, which
cause the low BOD removal efficiency. The plant is designed for a
daily flow of 0.500 MGD and an influent BOD loading of 850 pounds per
day. During the survey, the average flow was approximately 0.65 MGD
and the incoming BOD was approximately 1,000 pounds per day.
The Country Club of Miami wastewater treatment plant provided
BOD and suspended solids removals of 95 and 85 percent, respectively,
during the survey. A major portion of the suspended solids in the
j
effluent can be atributed to the algae from the polishing pond. The
BOD values in the effluent were low, averaging approximately 8 mg/1
during the survey.
The Carol City and Myrtle Grove plants are scheduled to be abandoned
in 1971, and the wastes are to be given preliminary treatment, then
pumped through the North Miami ocean outfall. Preliminary treatment
consists of allowing the wastewater to flow through a primary clasifier,
removing skimmings, and recombining the settled sludge. This will
reduce the flow of wastewater to the Snake Creek drainage by approximately
4 IIGD, and will reduce the BOD loading by approximately 800 pounds
per day, as well as providing similar reductions in other pollutants
(see Appendix A). However, abandonment of these treament plants
-------
12
is inconsistent with the Conference recommendation that a minimum of
secondary treatment, with at least 90 percent BOD removal and year-round
chlorination of effluent, be provided all waste before discharge to the
ocean.
B. Biscayne Canal and Little River Drainage
The Miami Lakes Utilities wastewater treatment plant did not
remove 90 percent of either BOD or susoended solids. During two
days of the survey, there was no chlorine residual in the effluent.
It was subsequently determined that the effluent from the Pickers
X-ray Solution Corporation contained thiosulfate solution, which
accounted for this absence in chlorine residual. Tills plant receives
industrial wastes from the 21 industries located in the Miami Lakes
Industrial Park. At the time of the survey, plant management had
no assessment of the quality or quantity of these wastes. The following
steps have since been taken to improve operations of the plant:
1. Additional operators have been hired.
2. Air lines have been cleared and blowers have been overhauled,
to insure proper supply of air to each of the three individual
plants in the system.
3. A contract has been let for a private laboratory to characterize
and quantify waste from each industry within the industrial
park.
4. Pickers X-ray Solution Corporation has begun a reclaiming operation
which eliminates that drainage of thiosulfate solution into
the sewer system.
-------
13
This plant la to be abandoned and the. present wastewater flow dis-
charged to the North Miami outfall. This will reduce the dally waste
loads to this drainage by 253 pounds BOD and 316 pounds suspended solids*
and the flow by 0.7 MGD. As with the Carol City and Myrtle Grove plants,
this proposed action is inconsistent with the Conference recommendation
that a minimum of secondary treatment, with at least 90 percent BOD
removal and year-round chlorination of effluent, be provided all wastes
before discharge to the ocean.
C. Miami River Drainage
There are no significant municipal discharges to the Miami River
drainage. The two plants surveyed discharged a total of 0.24 MGD
during the survey. The Atomic Sewerage plant removed greater than
90 percent BOD, and 89 percent suspended solids, at an average flow of
0.024 MGD. The Doral Country Club removed 90.1 percent BOD, and
57.6 percent suspended solids. The low suspended solids removal was caused
by other improper operation or design of the secondary clarifler.
D. Coral Gables Waterway Drainage
The Community Utilities Wastewater Treatment Plant contributes
over 95 percent of the wastewater flow to this drainage, approximately 90
percent of the BOD and suspended solids, and approximately 85 percent
of the total organic carbon loading. The Community Utilities plant
is to be abandoned, with the present wastewater flowing to the Virginia
Key plant.
-------
14
E. Snapper Creek Drainage
The Peninsular Utilities plant removed 89.5 percent BOD and
88.9 percent suspended solids. In early 1971, the plant will initiate
a deep-well injection system, which will reduce the total flow of
wastewater to the Snapper Creek drainage by approximately 40 percent,
the BOD loading by approximately 25 percent, and the suspended solids
loading by 37 percent.
The low removal efficiencies experienced at the Southern Estates
wastewater treatment plant during the survey, 76.1 percent removal
of BOD and 69.7 percent removal of suspended solids, can be attributed
to the extreme hydraulic overload, about 140 percent of design flow.
This excess flow is attributed to infiltration, which is verified
by the relatively low influent BOD concentration of 134 mg/1. The
present problem can be corrected by expeditious elimination of infiltration,
or by expansion of treatment facilities.
Removal efficiencies at the Westwood Lakes plant were 74 percent
and 94.3 percent for BOD and suspended solids, respectively. Until
immediately prior to the survey, the activitated sludge plant had
been utilized as an aerobic digester, with all wastewater flow through
the trickling filter. Because of the short period of time since startup,
the treatment capability of the system was possibly below normal, thus
resulting in low BOD removal.
F. Black Creek Drainage
The Cutler Ridge wastewater treatment plant removed 86.5 percent
BOD and 73.8 percent suspended solids. The plant experienced mechanical
-------
15
difficulties with a secondary clarifier on one day of the survey
which reduced the average removal efficiencies.
The Bell Aire wastewater treatment plant is a trickling filter
system with a microstrainer and sand filters as additional treatment.
The plant removed 77.8 percent BOO and 89.5 percent suspended solids.
Plans have been initiated to replace the system with an activated
sludge unit, but these plans have been suspended pending clarification
of State and local requirements for discharge of waste materials.
G. South Bay Drainage
The Homestead Air Force Base wastewater treatment plant is hydrauli-
cally overloaded. The plant is designed for the average flow of
approximately 1.0 i!GC, but receiver, approximately 2.5 I'GD during
v/intcr months and approximately 3.0 I'.CD during summer months. BOD
removal efficiences uere lo\; during the survey, based on an average
influent BOD strength of 52 ng/1 and an effluent strength of 13
mg/1, though this effluent strength is below that of many plants
surveyed. The primary and secondary clarificrs are to be expanded
and sand filters arc to be added.
H. Direct Ocean Discharge
There are three major waste discharges directly into the ocean.
The City of lliatii Virginia Key plant discharges approximately 40
'.'.CD of wastes, though designed for a flow of 47 "CD, of which approximately
80 percent of BOD and 90 percent suspended solids have been removed.
-------
16
The plant is designed to remove only 75 percent of the BOD. If this
plant is upgraded to provide 90 percent BOD removal, the present
load discharged to the ocean would be reduced by approximately 11,000
pounds per day. The North Miami and Miami Beach ocean outfalls discharge
approximately IS and 22 MGD, respectively, of wastewater which receives
"preliminary" treatment only. Ninety percent treatment of these
waste discharges would reduce the BOD loading to the ocean by approxi-
mately 33,000 pounds per day. These discharges do not conform to the
conference recommendation that all waste discharges receive 90 percent
treatment prior to discharge into the ocean.
-------
APPENDIX A
DATA ON INDIVIDUAL
MUNICIPAL WASTE TREATMENT
PLANTS IN DADE COUNTY,FLORIDA
-------
Table A-l.—Average Efficiences and Loadings for Individual Municipal Waste Sources, Oade County, Florida
Biochemical Oxygen Demand and Total Suspended Solids
Biochemical Oxygen Demand
Facility
Snake Creek Drainage
Andover
Carol City
Riverdale Estates
Golden Isles
Myrtle Grove-City of North
Miami
Country Club of Miami
Palm Springs North S.D.
Biscayne Canal and Little
River Canal Drainage
Miami Lakes Utilites
Seaboard Industrial Park
Opa Locka Alrport-Dade County
Port Authority
Miami River Drainage
Atomic Sewerage
Doral Country Club
Coral Gables Waterway
Lil1 Abner Trailer Park
Pan American Hospital
Community Utilities
Snapper Creek Drainage
Peninsular Utilites
Southern Estates
Westwood Lakes
Flow
MGD
1.714
2.030
0.362
0.642
1.645
0.185
0.447
0.727
0.117
0.183
0.024
0.215
0.072
0.036
2.471
2.500
1.428
1.970
Influent
164
164
456
182
250
138
265
233
788
187
1,126
295
402
209
211
230
134
227
Effluent
20
31
66
32
21
4
18
42
32
34
106
28
52
5
12
24
31
57
Percent
removal
84.0
82.5
85.6
82.4
91.8
94.5
92.8
79.8
95.0
82
89.9
90.1
84.1
97.8
94.4
89.5
76.1
74.0
Load
Ib/day
309
520
190
172
289
6
67
253
31
60
22
53
32
2
230
502
373
939
Total Suspended Solids
Influent
135
146
369
182
394
102
922
172
866
129
1,348
218
350
248
200
365
166
798
Effluent
17
56
249
31
24
13
9
72
27
16
124
54
80
65
24
41
50
52
Percent
removal
83.0
71.2
32.6
79.9
93.8
85.0
98.6
70.9
95.2
87
89.0
57.6
79.1
60.1
87.5
88.9
69.7
94.3
Load
Ib/day
200
96
769
166
330
20
34
316
26
24
27
108
52
20
499
847
588
856
-------
Table A-l.—Average Efficiences and Loadings for Individual Municipal Haste Sources, Dade County Florida
Biochemical Oxygen Demand and Total Suspended Solids—Continued
Biochemical Oxygen Demand
Facility
Black Creek Drainage
South Miami Heights
Cutler Ridge ..
Bell Aire S.D.-
South Bay Drainage
Homestead Air Force Base
City of Homestead
South Dade Labor Camp
Redland Labor Camp.?/
Leisure City!'
Atlantic Ocean
Virginia Key-City of Miami
North Miami
Sunny Isles
Miami Beach
Flow
MOD
1.089
2.195
0.423
2.116
0.893
0.126
0.057
0.296
40.3
13.5
1.5
21.8
Influent
507
209
233
52
174
500
479
238
311
64
144
165
Effluent
34
21
51
18
31
33
18
31
64
-
-
—
Percent
removal
92.2
86.5
77.8
63.7
82.7
93.9
90.6
86.8
79.3
-
-
•"
Load
Ib/day
306
479
180
318
222
35
23
76
21,640
722
1,804
29,998
Total Suspended Solids
Influent
958
374
285
69
258
785
679
437
654
115
91
176
Effluent
83
78
28
38
42
10
34
73
75
-
-
~
Percent
removal
85.1
73.8
89.5
76.0
84.7
98.7
90.6
81.2
88.4
-
-
™
Load
Ib/day
751
1,473
99
631
306
11
43
175
2.445
12.978
1.140
31,998
I/ Contributes 40 percent of load surface water, 60 percent to ground water.
2j Ground water discharge.
-------
Table A-2.—Average Efficiencies and Loadings for Individual Municipal Waste Sources, Dade County, Florida
Chemical Oxygen Demand and Total Organic Load
Chemical Oxygen Demand
Total Organic Carbon
Facility
Flow
MGD
Influent Effluent
Percent
removal
Load
Ib/day
Percent Load
Influent Effluent removal Ib/day
Snake Creek Drainage
Andover 1.714
Carol City 2.030
Riverdale Estates 0.362
Golden Isles 0.642
llyrtle Grove-City of North 1.645
Miami
Country Club of Miami 0.185
Palm Springs North S.D. 0.447
Ciscayne Canal and Little
River Canal Drainage
Miami Lakes utilities 0.727
Seaboard Industrial Park-City 0.117
of Miami
Opa Locka Airport-Uade County 0.183
Port Authority
Miami River Drainage
Atomic Sewerage
Uoral Country Club
Coral Cables Waterway
Lil1 Abner Trailer Park
Pan American Hospital
Community Utilities
0.024
0.215
0.072
0.036
2.471
483
516
1,001
545
537
434
890
559
2,098
972
9,179
776
831
631
660
77
121
261
103
83
45
87
388
193
74
467
173
472
48
45
87.
78.
73,
80,
32,
88.4
89.1
41.1
38.8
92
88.4
77.5
49.1
92.2
•J2.9
813
2,047
773
553
1,141
70
325
2,327
189
113
•J8
318
319
14
937
82
97
197
112
149
89
212
116
530
72
990
155
207
122
153
17
37
52
25
33
19
26
65
42
20
99
56
77
14
15
82.4
49.1
73.0
77.7
77.9
78.8
87.7
66.3
89.5
73
87.4
63.9
57.2
88.3
89.7
219
621
154
134
454
29
97
390
41
30
21
93
47
4
301
-------
Table A-2.—Average Efficiencies and Loadings for Individual Municipal Waste Sources, Dade County, Florida—Continued
Chemical Oxygen Demand and Total Organic Load
Chemical Oxygen Demand
Facility
Snapper Creek Drainage
Peninsular Utilities
Southern Estates
West wood Lakes
Black Creek Drainage
South Miami Heights
Cutler Ridge ..
Bell-Aire S.D.-'
South Bay Drainage
Homestead Air Force Base
City of Homestead
South Dake Labor Camp
Redlands Labor Camp.?/
Leisure City2./
Atlantic Ocean
Virginia Keys-City of lliani
North Miami
Sunny Isles
Miami Beach
Flow
MOD
2.500
1.428
1.970
1.089
2.195
0.423
2.116
0.893
0.126
0.057
0.296
40.3
13.5
1.5
21.8
Influent
679
501
556
2,051
714
605
446
368
3,069
1,016
785
791
540
560
522
Effluent
79
106
164
95
66
151
60
99
227
63 •
93
172
-
-
—
Percent
removal
86.9
78.0
70.5
95.0
90.5
71.9
84.1
73.5
92.9
89.5
87.1
77.9
-
-
—
Load
Ib/day
1,656
1,253
2,701
854
1,219
534
1,045
714
239
79
233
57,580
60,938
7,018
94,905
Total Organic Carbon
Influent
142
96
128
264
116
126
44
106
335
234
163
239
42
97
70
Effluent
20
31
58
11
29
19
18
43
18
17
32
50
-
-
••
Percent
removal
85.3
67.6
52.4
84.4
73.0
69.0
56.7
56.8
94.6
84.2
80.8
78.4
-
-
—
Load
Ib/day
406
362
955
272
533
137
309
304
19
22
80
16,720
4,740
1,216
12.726
\J Contributes 40 percent to surface water, 60 percent to ground water
21 Ground water discharge.
-------
Table A-3.—Average Efficiences and Loadings for Individual Municipal Waste Sources,
Dade County, Florida—Volatile Suspended Solids and Settleable Solids
Volatile Suspended Solids
Facility
Flow
MGD
Influent Effluent
Percent
removal
Load
Ib/day
Settleable Solids
Influent Effluent
Snake Creek Drainage
Andover 1.714
Carol City 2.030
Riverdale Estates 0.362
Golden Isles 0.642
Myrtle Grove-City of North 1.645
Miami
Country Club of Miami 0.185
Palm Springs North S.D. 0.447
Biscayne Canal and Little
River Canal Drainage
Miami Lakes Utilities 0.727
Seaboard Industrial Park 0.117
Opa Locka Airport-Dade County 0.183
Port Authority
Miami River Drainage
Atomic Sewerage
Doral Country Club
Coral Gables Waterway
Lil1 Abner Trailer Park
Pan American Hospital
Community Utilities
Snapper Creek Drainage
Peninsular Utilities
Southern Estates
Westwood Lakes
0.024
0.215
0.072
0.036
2.471
2.500
1.428
1.970
119
106
425
157
334
84
870
132
783
99
1,235
122
212
134
170
344
138
743
12
42
162
28
21
11
6
29
21
12
73
46
32
29
21
34
40
47
70.0
63.7
60.0
79.4
93.6
83.3
99.3
77.2
96.0
88
92.5
26.0
80.2
53.8
87.4
90.6
70.8
93.7
209
713
468
150
289
17
22
175
21
18
15
86
25
8.7
420
701
472
774
9
11
27
10
8.5
7
35
8
18
4
32
12
14
15
19
7.5
5
13
0.1
0.2
4.0
1.0
0.1
.1
1.2
.1
.3
0.08
0.34
0.8
0.1
0.1
0.1
0.1
0.3
-------
Table A-3.—Average Efficiences and Loadings for Individual Municipal Waste Sources, Dade County,
Florida—Volatile Suspended Solids and Settleable Solids—Continued
Volatile Suspended Solids Settleable
Facility
Black Creek Drainage
South Miami Heights
Cutler Ridge . .
Bell Aire S.D.±'
South Bay Drainage
Homestead Air Force Base
City of Homestead
Soutli Dade Labor Camp
Badlands Labor Camp!/
Leisure City!/
Atlantic Ocean
Virginia Key-City of Iliami
North Miami
Sunny Isles
Miami Beacli
Flow
MGD
1.089
2.195
0.423
2.116
0.893
0.12G
0.057
0.296
40.3
13.5
1.5
21.8
Influent Effluent
923
342
250
65
131
731
652
413
580
96
79
130
75
69
23
8.3
34
6
28
71
61
-
-
—
Percent
removal
85.0
73.6
94.6
86.0
82.3
99.2
91.9
81.7
89.8
-
-
—
Solids
Load
Ib/day Influent Effluent
668
1,293
81
149
248
6
35
169
19,100
10,833
990
23,635
19
7
9
3
8
2
9
9
10
1.5
2
8
0.1
0.1
0.1
0.2
0.1
0.1
0.5
0.2
0.1
-
-
—
I/ Contributes 40 percent to surface water. 60 percent to ground water.
2J Ground water discharge.
-------
Table A-4.—Average Concentrations and Loadings Cor Individual Municipal Waste Sources for Dade County, Florida
Nitrogen, Phosphorus and Chlorides
Kjeldahl Nitrogen Ammonia Nitrogen Organic Nitrogen
as N as N as N
Facility
Snake Creek Drainage
Andover
Carol City
Riverside Estates
Golden Isles
Myrtle Grove-City of North
Miami
Country Club of Miami
Palm Springs North S.D.
Blscayne Canal and Little
River Canal Drainage
Miami Lakes Utilities
Seaboard Industrial Park
Opa Locka Airport-Uade
County Port Authority
Miami River Drainage
Atomic Sewerage
Doral Country Club
Coral Gables Waterway
Lll1 Abner Trailer Park
Pan American Hospital
Community Utilities
Snapper Creek Drainage
Peninsular Utilities
Southern Estates
Westwood Lakes
Flow
MCD
1.714
2.030
0.362
0.642
1.645
0.185
0.447
0.727
0.117
0.183
0.024
0.215
0.072
.. 0.036
2.471
2.500
1.428
1.970
Effluent Load Effluent
mg/1 Ib/day mg/1
5.6
21.8
11.0
24.0
25.6
1.8
26.3
18.0
3.1
4.8
19.0
10.8 •
26.7
1.9
15.3
20.5
13.5
25.1
79
368
31
129
352
2.8
98
109
3
7.3
4
19
16
0.6
315
427
161
413
3.8
17.4
1.9
21.4
23.3
0.5
25
13.9
4.7
1.88
8.0
5.0
19.5
0.7
14.5
19.4
11.4
19.2
Load Effluent
Ib/day mg/1
53
296
6
115
320
0.8
93
84
5
2.9
2
9
12
0.2
300
405
135
316
1.8
4.3
9.0
2.6
2.3
1.3
1.3
4.1
3.7
N.D.
11.0
5.8
7.2
1.2
0.8
1.3
2.2
5.9
as N
Load Effluent
Ib/day on/1
26
73
25
14
32
2
4
25
4 '
N.D.
2
10
4
0.4
16
27
26
97
10.0
2.2
16.0
0.08
0.01
1.3
0.5
1.7
0.05
25.0
0.3
1.3
0.6
12.4
4.4
0.02
0.9
0.26
3
Total
Phosphorus
aa P Chloride
Load Effluent
Ib/day mB/1
140
37
46
0.4
0.1
2.0
2.0
10.0
0.05
38.2
0.1
3
0.1
4
90
0.1
10
4
7.6
9.0
16.4
11.1
10.8
6.8
13.7
13.0
6.6
9.2
7.5
6.7
15.2
2.1
7.2
9.4
8.7
11.8
Load
Ib/day
107
154
50
60
149
11
51
80
7
14.1
2
13
9
0.6
149
195
104
194
mg/1
67
36
43
114
69
30
68
75
62
192
116
55
79
118
46
36
45
57
-------
Table A-4.—Average Concentrations and Loadings for Individual Municipal Waste Sources Cor Bade County. Florida
Nitrogen, Phosphorus and Chlorides—Continued
Facility
Black. Creek Drainage
South Iliaal Heights
Cutler Ridge ..
Bell Aire S.D.-'
South Bay Drainage
Homestead Air Force Base
City of Homestead
Soutli Dade Labor Camn
Redlands Labor Camp!/
Leisure City!/
Atlantic Ocean
Virginia Key-City of Miami
North Miami
Sunny Isles
Miami Beach
Flow
MGD
1.089
2.195
0.423
2.116
0.893
0.126
0.057
0.296
40.3
13.5
1.5
21.8
Kheldahl
as
Effluent
mg/1
22.2
9.3
24.1
3.5
14.4
13.3
4.4
43.4
19.0
12.7
38.4
26.4
Nitrogen
N
Load
Ib/day
202
172
85
60
104
14
6
107
6,392
1,433
481
4,799
Aomonia Nitrogen
as N
Effluent
mg/1
18.0
7.4
19.9
2.0
11.3
8.5
2.3
13.1
14.1
6.5
26.4
19.0
Load
Ib/day
164
135
70
34
82
9
3
33
4,744
734
331
3,454
Organic Nitrogen
as II
Effluent
BR/1
4.2
2.0
4.2 .
1.5
3.1
4.9
2.1
30.3
5.1
6.2
12.0
7.4
N02+N03
as N
Load Effluent
Ib/day BK/1
38
37
15
25
22
5
3
75
1.716
700
78
1.349
1.1
0.9
0.8
6.8
5.7
2.3
10.6
0.7
0.06
.013
0.025
0.048
Load
Ib/day
10
18
3
119
42
2
13
2
20
1.5
.3
8
Total
Phosphorus
as P
Effluent
mg/1
13.6
10.0
10.2
6.9
13.6
7.4
9.0
19.8
8.6
4.6
8.0
8.8
Load
Ib/day
123
185
36
119
98
2
11
49
2,890
519
100
1.599
Chloride
mg/1
N.D.I'
69
40
119
72
47
43
53
1,048
1,353
979
J7Contributes 40 percent to surface water,
21 Ground water discharge.
V No data.
60 percent to ground water.
-------
Table A-5.—Median MEH and Average of Field Observations for Municipal Waste Source in Dade County, Florida
Coliforin
Flow
Facility MGD
Total
HFN
Fecal
MPN
Influent
Temperature
°C.
Effluent
PH
S.U.
Temperature
c
pU
S.U.
Chlorine
Residual
Snake Creek Drainage
Andover 1.714
Carol City 2.030
Riverdale Estates 0.362
Colden Isles 0.642
Myrtle Grove-City of North 1.645
Miami
Country Club of Miami 0.185
Palm Springs North S.D. 0.447
Biscayne Canal and Little River
Canal Drainage
Miami Lakes Utilities 0.727
Seaboard Industrial Park 0.117
Opa Locka Airport-Dade County 0.183
Port Authority
Miami River Drainage
Atomic Sewerage 0.024
Doral Country Club 0.215
Coral Cables Waterway
Lil1 Abner Trailer Parki' 0.072
Pan American Hospital • 0.036
Community Utilities 2.471
Snapper Creek Drainage
Peninsular Utilities 2.500
Southern Estates 1.428
Uestwood Lakes 1.970
20
18
18
18
18
20
18
18
18
18
18
18
18
18
2,700,000 350.000
18
20
18
18
18
20
18
18
620 1,100
26
26
26
25
25
24
25
26
26
23
25
29
25
29
26
26
25
24
7.6
7.3
7.5
7.2
7.0
6.5
7.2
8.3
7.1
6.7
7.8
6.8
7.8
7.3
9.7
3.3
8.4
7.8
24
25
23
24
23
23
23
26
23
21
23
28
22
25
26
25
24
23
6.8
6.9
4.6
6.5
6.6
6.5
6.7
8.1
6.0
6.4
7.410
6.8
6.6
5.7
9.8
8.1
8.1
6.7
2.0
4.0
6.8
2.3
2.2
1.0
1.8
2.6
3.5
0
4.2
N.D.
3.4
2.0
4.4
2.8
2.5
-------
Table A-5.—Median MFM and Average of Field Observations for Municipal Waste Source in Dade County, Florida—Continued
Coliform
Facility
Black Creek Drainage
South Miami Heights
Cutler Ridge -,
Bell Aire S.D.-
South Bay Drainage
Homestead Air Force Base
City of Homestead
South bade Labor Camp
Kedland Labor Camp!'
Leisure City!'
Atlantic Ocean
Virginia Key-City of Miami
North Miami
Sunny Isles
Miami Beach
Flow
:£D
1.089
2.195
0.423
2.116
0.893
0.126
0.057
0.296
40.3
13.5
1.5
21.8
Influent
Total Fecal Temperature pit
1IPM IVl, °C S.U.
410
18
170
490
18
40
1,300
ND
ND
ND
32
18
45
93
18
18
78
HD
ND
ND
26
27
24
25
26
23
26
28
ND
ND
ND
7.2
7.1
7.4
7.2
7.7
6.7
7.3
6.8
ND
ND
ND
Effluent
Temperature pH
°C S.U.
27
27
22
25
26
21
25
28
ND
ND
ND
7.0
7.0
6.6
6.9
7.4
6.5
7.3
6.8
ND
ND
ND
Chlorine
Residual
1.1
1.8
1.5
.5
2.2
3.3
2.3
0.4
ND
ND
ND
I/ Single sample.
2] Contributes 40 percent to surface water,
2/ Ground water discharge.
ND Not determined.
60 percent to ground water.
6PO M4-3OI
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