Item 8A
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AGENDA ITEM #8A
MARCH 8, 2004
CITY OF ATLANTIC BEACH
CITY COMMISSION MEETING
STAFF REPORT
AGENDA ITEM: Contract for Effluent Copper Mixing Zone, Phase II
,,,, SUBMITTED BY: Donna Kaluzniak, Utility Direct~-
DATE: February 27, 2004
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BACKGROUND: On June 9, 2003, the City Commission authorized staff to negotiate a
contract with Camp, Dresser & McKee (CDM) to conduct a study in order to obtain an effluent
copper mixing zone from the Department of Environmental Protection (DEP). This would allow
the three beach cities to discharge a higher level of copper in the combined effluents based on
the results of the study. The Copper Mixing Zone study was to be conducted in two phases, as
'"" per RFP No. 0203-7. Phase I consisted primarily of sampling, analysis, and development of a
modeling workplan to submit for DEP's approval, and has been completed. Phase II will consist
of modeling and permit modification activities.
Staff has negotiated a price of $26,500 for Phase II of the Effluent Copper Mixing Zone project.
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BUDGET: Funding for Phase II of the Effluent Copper Mixing Zone is available in the Sewer
Fund, miscellaneous professional services, account no. 410-5508-535-31-00. The project will be
funded by all three beach cities as follows:
Treatment Plant Design Flow,
MGD
Total = 10.9 Percent of Total of All
4 Treatment Plants Cost for Phase I of the
Ellluent Copper Mixing
Zone Stud .
Jacksonville Beach 4.5 41.3% $10,944.50
Ne tune Beach 1.5 13.7% $3,630.60
**Atlantic Beach 4.9 45% $11,925.00
**Total of Wastewater Plant #1 (3.0 MGD) plus Wastewater Plant #2 (1.9 MGD)
RECOMMENDATION: Award the contract for Phase II of the Effluent Copper Mixing Zone
to Camp, Dresser & McKee in the amount of $26,500.
ATTACHMENTS: 1. Proposal from CDM dated February 16, 2004.
REVIEWED BY CITY MANAGER:
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~"" 8659 Baypine Road, Suite 200
Jacksonville, Florida 32256
tel: 904 731-7109
fax: 904 731-0465
February 16, 2004
Ms. Donna }`Caluzniak
Utility Director
City of Atlantic Beach
1200 Sandpiper Lane
Atlantic Beach, Florida 32233
AGENDA ITEM #8A
MARCH 8, 2004
Subject: Modeling Proposal (Revised) to Determine Copper Mixing Zone at the St.
Johns River Estuary
Dear Ms. Kaluzniak: f
As a follow up to our telephone conversation, please find enclosed a revised fee proposal for
the modeling necessary to secure regulatory approval for a mixing zone. The scope of this
work includes assistance in modifying the current effluent permit (FL0038776) in accordance
with the Chapter 62-302 of the State of Florida Statutes. The highlights of this proposal
include:
1. Model Setup, Data Collection and Evaluation, and Processing
2. Model Calibration and Comparisons with Observed Values
,~ 3. Simulations of Current Conditions and Determination of Mixing Zone
4. Reporting and Permit Modification Assistance
We are looking forward to the opportunity to assist you in resolving the regulatory concern
regarding elevated copper concentrations discharged through the wastewater outfalls. Please
contact me if you have any questions concerning this proposal.
Sinc ely,
oval E. Maurer, P.E., DEE
Associate
Camp Dresser & McKee Inc.
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AGENDA ITEM #8A
MARCH 8, 2004
Statement of Work
Permitting Assistance, Mixing Zone Assessment of Total Copper at the St. Johns
River Outfall
February 12, 2004
1. Background
From August 21 to September 18, 2003, CDM, hereafter referred to as the
CONTRACTOR, has supervised a field investigation in agreement with the
original work order for the City of Atlantic Beach, hereafter referred to as the
CITY. Grab water samples were collected from the final effluent streams of four
"" wastewater treatment plants (Atlantic Beach 1 and 2, Jacksonville Beach, and
Neptune Beach) and from three Locations (SJR_1: 30 feet downstream from the
~ outfall discharge pipe, SJR_2: outfall discharge pipe, and SjR_3: 30 feet upstream
of the outfall) in the St. „Johns River near the common outfall, before being
analyzed with EPA method 220.2 and 1640. On several occurrences, the
~. CONTRACTOR repprted elevated concentrations of total recoverable copper in
excess of the regulatory standard (3.7 ug/L per the FDEP) at the St. Johns River
effluent outfall. The State of Florida does not allow continuous or temporary
~!' violations of discharge permit for total recoverable copper.
Continuous tolerance of these elevated concentrations necessitates -the
~` establishment and approval of a mixing zone by FDEP through a permit
modification. A mixing zone is defined as the volume or area required to mix
~,,, the point-source pollutant of concern to an acceptable concentration. FDEP
demands that the outer delineation of a mixing zone exhibits a 100:1 downstream
(and upstream) dilution ratio (Gilbert, 2002).
For continuous discharge of copper-enriched effluents, CDM recommends to use
a mathematical flow and transport model (such as CORMIX) to determine and
'~' optimize the extent of the mixing zone at the St. Johns River outfall.
2. Purpose
This scope focuses on providing further permitting assistance to the City of
~,. Atlantic Beach to obtain a discharge permit modification in the St. Johns River for
total recoverable copper coming from the four wastewater treatment plants using
a mathematical model.
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AGENDA ITEM #8A
MARCH 8, 2004
3. Task Identification
Task 3.1: Model Setup, Data Collection and Evaluation, and Processing.
The CONTRACTOR will be responsible for setting up the mathematical model,
CORMIX, at the outfall pipe in the St. Johns River. Using the best available
~,., sources, the CONTRACTOR will organize the required data for the development
of the river model, including river depth, ambient current velocity profile,
ambient salinity and temperature, background pollutant concentration, decay
°~ rate, far-field dispersion rate, port diameter, port elevation, port orientation
(vertical and horizontal), effluent flow rate, effluent salinity and temperature,
and effluent pollutant concentration. The CITY and the FDEP shall assist the
""~ CONTRACTOR in providing the effluent discharge permit of each wastewater
treatment facility.
Task 3.2: Model Calibration and Comparisons with Observed Values
The CONTRACTOR shall utilize data from previously selected sampling
locations 30 f eet upstream (S JR_3) from the outfall discharge as the suitable
calibration point. Water velocity and background concentration of total
recoverable copper swill be calibrated with a relative error of 20 percent. The
model outputs of velocity and total recoverable copper concentrations will be
compared against field measurements.
The CONTRACTOR shall provide appropriate statistical analysis on the match
~,,, between predicted and measured values of velocity and concentrations,
including mass balance and plots.
Task 3.3: Simulations of Current Conditions and Determination of Mixing
Zone
~"' Once the model is satisfactorily calibrated, the CONTRACTOR shall determine
the extent of the mixing zone downstream of the outfall pipe, including the 100:1
dilution line, and the centerline dilution. The CONTRACTOR will predict the
attainable dilution ratio for the, total recoverable copper discharge as a function
of distance downstream of the common outfall discharge pipe.
Task 3.4: Reporting
The CONTRACTOR shall submit of the following reports: (1) a final .draft report
for review at the completion of the modeling effort, and (2) a final report at the
completion of the project addressing .comments .arising from the review of the
~"" draft.
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AGENDA ITEM #8A
MARCH 8, 2004
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The CONTRACTOR shall draft a final report that includes project description,
""" collection and evaluation of data, calibration procedure, assumptions and
limitations of the model calibrations, determination of the mixing zone, and
summary and recommendations. Plots of total recoverable copper
~ concentrations, comparison between predicted and measured velocity and total
recoverable copper concentration shall be included in the final report.
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The CONTRACTOR shall submit the final draft report to the CITY and FDEP for
review in six bound copies. The draft shall be reviewed by CITY and FDEP staff
within three weeks of submittal and returned to the CONTRACTOR with review
comments for final editing. Within three weeks of receipt of CITY's final
comments, the CONTRACTOR shall submit:
1. The final version of the report in six bound copies; and
~„ 2. A documented CD-ROM or DVD of the project report as a pdf file, and
model input and output files of the project area.
4. Time Frames and Deliverables
Overall the project time shall not exceed 12 weeks from receipt of a Notice-to
Proceed with the following milestones:
1. Draft final report delivered within 6 weeks of issuance of this work
order;
2. The CITY will review and provide comments within 3 weeks of
submittal of the draft report using the CONTRACTOR standard
review template; and
3. Submittal of revised final report and model input/output files within 3
weeks of the receipt of the CITY's comments.
5. Budget/Cost Schedule
The rCONTRACTOR shall provide the professional services described in this
~, scope of work for a lump sump of $26,500. The CONTRACTOR shall invoice
every month based on estimated percent of completion. The cost breakdown is
described in Table 5-1.
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Table 5-1: Cost Breakdown of Mixing Zone Project
AGENDA ITEM #8A
MARCH 8, 2004
Task Descri tion $
1 Collection and Evaluation of Data 3,500
2 Calibration of Model 8,000
3 Determination of Mixin Zone 10,000
4 Production of Re ort 5,000
Total 26,500
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AGENDA ITEM #8A
MARCH 8, 2004
Submitted By: Date: l6
Camp Dresser & McKee Inc.
Accepted By:
City of Atlantic Beach
Date:
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