HomeMy WebLinkAbout2019-034ACCNA2018 WORK ORDER 4
FEASIBILITY EVALUATION OF LANDFILL LIQUIDS MANAGEMENT OPTIONS
This Work Order Number _4_ is entered into as of this 19 day of February 2019_, pursuant
to that certain Continuing Consulting Engineering Services Agreement for Professional Services entered
into as of this 17th day of April, 2018 (collectively referred to as the "Agreement"), by and between
INDIAN RIVER COUNTY, a political subdivision of the State of Florida ("COUNTY") and Geosyntec
Consultants, Inc. ("Consultant").
The COUNTY has selected the Consultant to perform the professional services set forth on
Exhibit A (Scope of Work), attached to this Work Order and made part hereof by this reference. The
professional services will be performed by the Consultant for the fee schedule set forth in Exhibit A
(Fee Schedule), attached to this Work Order and made a part hereof by this reference. The Consultant
will perform the professional services within the timeframe more particularly set forth in Exhibit A
(Time Schedule), attached to this Work Order and made a part hereof by this reference all in
accordance with the terms and provisions set forth in the Agreement. Pursuant to paragraph 1.4 of
the Agreement, nothing contained in any Work Order shall conflict with the terms of the Agreement
and the terms of the Agreement shall be deemed to be incorporated in each individual Work Order as
if fully set forth herein.
written
ISS
WITNESS WHEREOF, the parties hereto have executed this Work Order as of th,,p'c ,� first/e•
CONSULTANT:
By:
Title:
Thomas A. Peel, Ph.D.
Senior Vice -President
Bv:
*•
BOARD OF COUNTY CON1MISSI
OF INDIAN RIVER CCOON;11'
�4. �. '�;:
Bob Solari, Chairniar FRCouci' ''.
BCC Approved
Date: February 19 , 2019
Attest: Jeffrey R. Smith, Clerk of Court and
Comptroller
By:
Approved:
Approved as to form and legal sufficiency:
Deputy Clerk
Jason
unty Administrator
. Reingold, County Attorney
EXHIBIT A
SCOPE OF WORK, FEE SCHEDULE,
AND TIME SCHEDULE
Geosyntec
consultants
Mr. Himanshu Mehta, P.E., Managing Director
Solid Waste Disposal District
Indian River County
1325 74th Avenue SW
Vero Beach, Florida 32968
1200 Riverplace Boulevard
Suite 710
Jacksonville, FL 32207
PH 904-858-1818
FAX 904-396-7143
www.Qeosvntec.com
11 February 2019
Subject: Proposal for Engineering Services
Focused Feasibility Evaluation of Landfill Liquids Management Options
Indian River County Landfill Facility
Vero Beach, Indian River County, Florida
Dear Mr. Mehta:
Geosyntec Consultants, Inc. (Geosyntec) is pleased to submit this proposal to Indian River
County (IRC) Solid Waste Disposal District (SWDD) to provide engineering services related to
conducting a focused feasibility evaluation of landfill liquids management options for the IRC
Landfill (IRCL) facility in Indian River County, Florida. This proposal was prepared in response
to verbal and email requests from Mr. Himanshu Mehta, P.E., Managing Director, of SWDD to
Dr. Kwasi Badu-Tweneboah, P.E. of Geosyntec.
Geosyntec has prepared this proposal as Exhibit A of CCNA-2018-WO No. 4, pursuant to that
certain Continuing Contract Agreement for Professional Services, dated 17 April 2018
(collectively referred to as the "Agreement"), by and between INDIAN RIVER COUNTY, a
political subdivision of the State of Florida ("COUNTY") and Geosyntec ("Consultant").
The remainder of this proposal presents: (i) project background; (ii) proposed scope of work;
(iii) schedule; and (iv) budget estimate.
PROJECT BACKGROUND
The IRCL facility is located in southern Indian River County, east of Interstate 95, south of Oslo
Road, and west of Rangeline Road in Vero Beach, Florida. The landfill serves the unincorporated
Indian River County and municipalities of Vero Beach, Orchid, Fellsmere, Sebastian, and Indian
River Shores. The landfill property includes the Class I landfill, an inactive Construction and
Demolition (C&D) debris disposal facility, and other support facilities. A Residuals Dewatering
Facility (RDF) was constructed and started operation on 5 March 2010 at the site. Leachate from
the Class I landfill and centrate (i.e., dewatering liquids) from the RDF are transmitted via force
main to the West Regional Wastewater Treatment Facility (WRWWTF) for treatment and disposal.
engineers 1 scientists 1 innovators
Mr. Himanshu Mehta, P.E. Managing Director
11 February 2019
Page 2
The regional lift station, force main, and WRWWTF are operated and maintained by the IRC
Utilities Department (IRCUD). The WRWWTF is permitted by the Florida Department of
Environmental Protection (FDEP) with Permit No. FL0041637 to operate and discharge treated
effluent into the: (i) Lateral D Canal (Part I.A of Permit); and (ii) created wetland as land
application and to the countywide reuse system (Part LB of Permit).
Geosyntec understands that the WRWWTF is currently designed and permitted to treat 6 million
gallons per day (mgd). However, the treatment capacity is limited by restrictions on the amount
of treated effluent, due to severe Total Maximum Daily Load (TMDL) and wasteload allocations
(WLA), that can be discharged to the Lateral D Canal via created wetlands (4 mgd). The treated
effluent that can go to the created wetlands can also be reclaimed for use by golf courses and
other services; however, the demand for this reclaimed wastewater declines during the rainy
seasons resulting in more flow to the wetlands. The component of the treated effluent that
cannot be used as reclaimed wastewater is hereafter referred to as wet weather liquid. It is also
anticipated that the capacity that can be discharged into the Lateral D Canal may be further
restricted by nutrient WLA for the facility established as part of the TMDL for the Indian River
Lagoon.
The SWDD in conjunction with the IRCUD would like to explore other liquids management
options for the combined leachate and centrate liquids from the IRCL facility. Besides
discharging the liquids to an off-site publicly -owned treatment works (POTW), such as the
WRWWTF, the other commonly used leachate management approaches at MSW (i.e., Class I)
landfills are: (i) on-site leachate recirculation back into the landfill; (ii) volume reduction using
evaporation technology; (iii) discharge into an on-site underground injection control (UIC) well;
(iv) off-site trucking to an UIC well; and (v) on-site treatment using a variety of physical,
chemical, and/or biological approaches ranging from reverse osmosis (RO) to sequencing batch
reactors (SBRs), aerated lagoons, and constructed wetlands. On-site treatment may be
performed to meet industrial pretreatment standards for eventual discharge to a POTW, or it may
be utilized as a stand-alone treatment system for subsequent discharge via a National Pollutant
Discharge Elimination System (NPDES) permit or an UIC permit, on-site reuse, or land
application. The SWDD Board has previously provided IRC staff direction of not pursuing the
use of an UIC well (either onsite or off-site) but rather pursue other viable options for the
treatment and disposal of the liquids from the IRCL facility. Therefore, this proposal is focused
on some of the other leachate management options described above.
PROPOSED SCOPE OF WORK
This proposal presents the scope of work for conducting a focused feasibility evaluation of
liquids management options for the IRCL facility. The project objectives are to evaluate existing
conditions and to provide recommendations towards a more sustainable liquids (leachate-
centrate) management strategy, including the identification of a potentially more cost-effective
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Mr. I-limanshu Mehta, P.E. Managing Director
11 February 2019
Page 3
and environmentally friendly liquids management option for the IRCL facility. For budgeting
purposes, the scope of work will be performed in four phases as follows:
• Phase 1 — General consulting/meeting support/project management;
• Phase 2 — Review of liquids chemistry and flow data;
• Phase 3 — Evaluation of liquids management options; and
• Phase 4 — Preparation of a technical memorandum.
Each of these phases is briefly described below.
Phase 1 — General Consulting/Meeting Support/Project Management
Under this phase, Geosyntec will perform project planning and management responsibilities,
such as correspondence with the SWDD and IRCUD, invoice review, project coordination,
budget and schedule tracking and project administration. Geosyntec has also included a budget
for preparation and attendance (by two Geosyntec personnel) at two meetings: (i) kickoff
meeting with the SWDD and IRCUD staff to obtain information required to complete the
evaluation; and (ii) project review meeting with SWDD and IRCUD staff to review and discuss
findings from the evaluation. Details of these meetings are discussed in subsequent phases of
this proposal. Geosyntec has assumed that the kickoff meeting will be held via teleconference in
order to reduce overall costs and expedite the process of completing the project.
Phase 2 — Review of Liquids Chemistry and Flow Data
Geosyntec will review chemistry and flow rates data for the landfill leachate and RDF centrate,
WRWWTF permit requirements (discharge and monitoring), other discharge requirements for
the treatment plant, and other information that are deemed relevant for the feasibility evaluation.
Some of this information may be available in the document titled "Indian River County Landfill
Preliminary Leachate Pretreatment Evaluation" prepared by CDM Smith Inc. and dated April 11,
2018 (hereafter referred to as CDM Smith Report).
Despite the availability of historical data on the general chemistry of the landfill leachate
(including that contained in the CDM Smith Report), Geosyntec proposes that another round of
comprehensive sampling and characterization of the leachate would be required. In addition,
samples of the centrate from the RDF and the combined mixture of the leachate and centrate at
the lift station prior to transfer to the WRWWTF should also be collected. The three liquid
samples should be analyzed for the complete suite of parameters required by the permits of the
three facilities (i.e., Landfill, RDF, and WRWWTF) as well as local discharge and NPDES
permit requirements. The list of parameters will be developed for review and approval by
SWDD and IRCUD following the kickoff meeting and establishment of the applicable regulatory
engineers I scientists I innovators
Mr. Himanshu Mehta, P.E. Managing Director
11 February 2019
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requirements. Geosyntec has assumed that SWDD will directly contract the sampling and
analytical testing with Ideal Technical Services (ITS) and ENCO Laboratories, Inc. (ENCO),
respectively. The results of the testing will be provided to Geosyntec in electronic format to
expedite the review process.
Geosyntec will also need updated information on the leachate, RDF centrate, and combined lift
station flow rates to make sure that there are no significant changes from those reported in the
CDM Smith Report.
Phase 3 — Evaluation of Liquids Management Options
Geosyntec will compile the pertinent data, including the latest analytical data from the three
samples and updated flow rates, and conduct a thorough evaluation of this information with
respect to: (i) liquid chemistry and treatability; (ii) potentially applicable treatment options and
relative costs of these options; (iii) local limits requirements of the WRWWTF; and
(iv) feasibility of separating the landfill leachate from the centrate to meet pre-treatment and/or
disposal requirements.
Based on a preliminary review of the CDM Smith Report, the landfill leachate has exceedances
of the local limits for arsenic, total dissolved solids (TDS), and total nitrogen (including
ammonia). Depending on the results of the proposed sampling of the three liquids, it is
anticipated that the following treatment options will be evaluated: (i) biological treatment using
SBR system; (ii) RO membrane system; and (iii) advanced oxidation. Each of these treatment
options will be evaluated with respect to the chemical constituent(s) targeted for removal. For
example, the biological treatment system is typically used to remove ammonia and other nitrogen
compounds whereas RO will be focused on reducing the TDS concentration. In addition,
leachate volume reduction via on-site evaporation (using waste heat and/or landfill gas
combustion systems) will be evaluated with specific focus to the landfill leachate. Another
potential option is with the use of "Vetiver grass" which is known to be tolerant of elevated salt
ammonia concentrations (typically found in landfill leachate) and has some extensive root
systems capable of high moisture uptake. It is generally used for on-site management (i.e.,
irrigation) of leachate rather than pre-treatment for subsequent discharge to a POTW. The
number of options to be evaluated will be discussed and agreed with SWDD and IRCUD
following review of the analytical data on the three liquid samples.
The evaluation of each alternative will include feasibility level cost estimates (capital,
installation and O&M) for major items required for implementation of each
treatment/management option. Additionally, the evaluation will include non -economic aspects,
such as ease of implementation, including permitting and regulatory hurdles, the complexity of
the system, robustness of the system, and other requirements. The need for a batch or pilot test
program to further evaluate the viability of a treatment option will also be included. The
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Mr. Himanshu Mehta, P.E. Managing Director
11 February 2019
Page 5
advantages and disadvantages of each option will be discussed, and recommendations will be
presented in the technical memorandum as described under Phase 4.
Phase 4 — Preparation of Technical Memorandum
A technical memorandum will be prepared as the deliverable for the above scope of work. The
memorandum will present a summary of the options evaluated as well as the conceptual costs
(capital, installation and O&M) estimates and systems comparisons. The memorandum will
provide recommendations on the options/alternatives evaluated for review and consideration by
IRC staff and for presentation to the SWDD Board. A draft memorandum will first be issued to
SWDD and IRCUD for review and will be finalized upon receipt of review comments.
Geosyntec will meet with SWDD and IRCUD staff to review and address comments on the draft
memorandum prior to finalization.
SCHEDULE
Geosyntec will initiate work immediately upon receipt of Notice to Proceed (NTP) from SWDD.
Geosyntec anticipates the collection of background information including the sampling and
analytical testing of the three liquid samples would take approximately two weeks (assuming ITS
and ENCO will be issued NTP immediately), while the evaluation of leachate management
options and the preparation of the technical memorandum will take an additional three to four
weeks. Therefore, a draft technical memorandum will be issued to SWDD approximately six
weeks after receipt of NTP. The review meeting will be scheduled following submittal of the
draft memorandum.
BUDGET ESTIMATE
Geosyntec proposes to perform the above -referenced work on a lump sum basis for $30,989.
The estimated budget for the scope of work described herein is summarized as follows:
Phase Description Cost Estimate
1
2
3
4
Project Management/Meetings $ 5,313
Review of Background Documents/Liquids Chemistry Data $ 7,360
Evaluation of Liquids Management Options $ 11,700
Technical Memorandum $ 6,616
Total $ 30,989
Geosyntec will invoice SWDD each month of the project on a lump sum, percent complete basis
in accordance with our Agreement. Additional services or any significant change in the scope of
work will be performed using the Rate Schedule included in our Agreement.
engineers I scientists i innovators
Mr. Himanshu Mehta, P.E. Managing Director
1 1 February 20l 9
Page 6
CLOSURE
Geosyntec appreciates this opportunity to offer our services. If this proposal is acceptable,
please indicate your agreement by signing the attached work authorization, which references this
proposal. Please return one signed work authorization to Dr. Badu-Tweneboah's attention.
Please call the undersigned with questions you may have as you review this proposal.
Sincerely,
4„d gledtb,,
Richard Tedder, P.E,
Senior Consultant
Kwasi Badu-Tweneboah, Ph.D., P.E.
Principal
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