HomeMy WebLinkAbout2022-069WORK ORDER NO. 7
West Regional Wastewater Treatment Facility
Industrial Wastewater Pretreatment Local Limits Evaluation
This Work Order Number No. 7 is entered into as of this 5th day of April, 2022, pursuant to that
certain Continuing Contract Agreement, dated April 17, 2018, renewed and amended as of May 18,
2021 (collectively referred to as the "Agreement"), by and between INDIAN RIVER COUNTY, a political
subdivision of the State of Florida ("COUNTY") and Tetra Tech, 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 B
(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 Section IV of
the Agreement (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.
IN WITNESS WHEREOF, the parties hereto have executed this Work Order as of the date first
written above.
CONSULTANT:
Print Name: �-j
Title: V C�-
BOARD OF COUNTY COMMISSIONERS
OF IN
By:
Peter O'Bryan, Chairman
BCC Approved Date: April 5, 2022
Attest: Je y R. Smith, Cl rk of Court and Comptroller
By: �( I,&
Depu y Clerk
Approved:
Jason E/Bro*n, County Administrator
Approved as to form and legal sufficiency: 4'--- —
Dylan T. Reingold, County Attorney
OTETRA TECH
March 7, 2022
Via email: rmeckes@ircgov.com
Mr. Richard Meckes
Indian River County Utilities Department
1801 27th Street
Vero Beach, FL 32960-3388
Subject: Work Order #7
Proposal to Indian River County for the West Regional WWTF
INDUSTRIAL WASTEWATER PRETREATMENT LOCAL LIMITS EVALUATION
Tt # 200BP Indian River County
Dear Mr. Meckes:
Tetra Tech, Inc. (Tetra Tech) is pleased to provide Indian River County Department of Utility Services
(IRCDUS) with this proposal for services to assist in the preparation of the West Regional Wastewater
Treatment Facility (WWTF) Industrial Wastewater Pretreatment Local Limits Evaluation.
BACKGROUND
The IRCDUS owns and operates the West Regional WWTF, a 6.0 million gallons per day (MGD) annual
average daily flow (AADF) domestic WWTF. The WWTF consists of two influent mechanical bar
screens, two grit removal units, two fermentation basins, two 1st anoxic basins, four aeration basins,
two 2nd anoxic basins, two reaeration basins, four secondary clarifiers, four tertiary filters, and six
chlorine contact chambers. The WWTF has sodium hydroxide and alum chemical feed facilities. Also,
the WWTF has a rotary drum thickener and an aerated sludge holding tank for processing biosolids.
Effluent from the WWTF is disposed through a 4.0 MGD AADF Surface Water Discharge, D-001, from
the created wetland, R-001; a 6.97 MGD AADF slow -rate public access Land Application R-002 which
provides reclaimed water for irrigation public access reuse within the IRCDUS's service area; and a 0.1
MGD AADF Land Application R-003 rapid infiltration basin (RIBS).
The WWTF is operating under current Florida Department of Environmental Protection (FDEP)
wastewater permit number FL0041637. The WWTF treats wastewater from both domestic and
nondomestic sources. In an effort to control discharges from nondomestic sources, the County
implements an Industrial Pretreatment Program (IPP) that regulates the wastewater discharged from
nondomestic users to reduce and eliminate impacts these discharges may have on the WWTF. As part
of the permit and IPP, IRCDUS is required to periodically evaluate and update the local limits. In
addition, the County is requesting that a general evaluation of their existing IPP.
As part of the Local Limits evaluation Tetra tech will prepare two work products (draft and final) as
follows for review and approval by the IRCDUS:
Tetra Tech, Inc.
201 E. Pine Street, Suite 1000, Orlando, FL 32801
Tel 407 839.3955 Fax 407.839.3790 www.tetratech.conn
OTETRA TECH
• Plan of Study
• Technical Evaluation / Report
Mr. Richard Meckes.
Indian River County Department of Utility Services
March 7, 2022
Page 2
The Plan of Study and Technical Evaluation / Report will be submitted in the format as required by the
FDEP.
For the IPP evaluation Tetra tech will prepare two work products (draft and final) as follows for review
and approval by the IRCDUS:
• IPP Evaluation Technical Memorandum (TM)
H. SCOPE OF WORK
IRCDUS has requested that Tetra Tech provide engineering services to prepare local limits analysis per
the Continuing Contract Agreement for Engineering Services Dated April 17th, 2018. Tetra Tech's
proposal to provide the requested engineering services is presented in this scope of work.
Task 1— Project Meetings and Project Management
Tetra Tech will prepare for, conduct and prepare minutes for meetings associated with
this project, including the following:
a. Kick Off Meeting
b. Two (2) Coordination/Progress Meetings
Project Management includes, but is not limited to: organizing and coordinating the
project team; organizing meetings; and managing the project budget, schedule and
preparation of updates.
Task 2 — Review Existing Data
Tetra Tech will review the IRCDUS's information, including but not limited to:
a. Existing Local Limits
b. WWTF FDEP Permit
c. Minimum of one set of priority pollutant scan results
d. Monthly Operating Reports for the past five (5) years
e. List of Industrial Users
f. Basis of Design for the WWTF
Task 3 — Plan of Study
Tetra Tech will develop the Plan of Study in accordance with the U.S. EPA's Local Limit
Development Guidance (EPA 833R -04-002A) and Chapter 4 of the Florida Guidance Manual for
Pretreatment Programs. The Plan of Study will include the:
OTETRA TECH
• Pollutants of Concern (POCs)
• Sampling Plan
• Local Limits Development Schedule
Mr. Richard Meckes.
Indian River County Department of Utility Services
March 7, 2022
Page 3
A POC is any pollutant that might be discharged to the WWTF in sufficient amounts to pass
through or interfere with the unit processes, contaminate the facility's residuals or effluent, be
problematic for the collection system, or jeopardize wastewater operator health. The established
local limits apply at the point where the wastewater is discharged to the WWTF.
The purpose of the Plan of Study is to determine the characteristics of the IRCDUS's wastewater
and biosolids. Tetra Tech will prepare a Plan of Study containing a sampling plan to collect
samples of the influent, effluent, appropriate background locations, septage, and the biosolids for
the WWTF.
The Draft Plan of Study will be submitted to the IRCDUS for review and then submitted to the
FDEP for review and approval. This scope includes responding up to two (2) rounds of comments
from the FDEP regarding the Plan of Study. After FDEP approval, Tetra Tech will review the Plan of
Study with IRCDUS staff.
Task 4 — Sampling and Analysis Program
The IRCDUS will conduct the sampling program for the wastewater, septage, effluent and
biosolids. Depending on the influent sampling location, the side streams from the facilities
operations may also require sampling. The IRCDUS will perform and pay for all sample collection
and laboratory analysis as required for the sampling program. Tetra Tech will coordinate with the
IRCDUS staff and review the results when received from the IRCDUS or their selected laboratory.
A. Wastewater Sampling
For evaluating the local limits, samples will need to be flow proportioned or time
composited and will be outlined in the Plan of Study. Grab samples will need to be
collected from the influent and effluent at the WWTF.
B. Septage Sampling
Septage sampling will be conducted to account for the loading in the local limits. Details
of the septage sampling will be confirmed during the Kick-off meeting.
C. Biosolids Sampling
The biosolids sampling technique for demonstrating compliance is specified in the
biosolids regulations stipulated in 40 CFR 503 (Biosolids Rule). The IRCDUS will need to
collect several aliquots from randomly selected locations within the biosolids mass and
TETRATECH
Mr. Richard Meckes.
Indian River County Department of Utility Services
March 7, 2022
Page 4
the aliquots will be composited to form a single mass for analysis. Biosolids sampling is
proposed as follows:
• Four grab samples collected within an 8 -hour period and composited.
• Sampling period is proposed over 2 consecutive days.
Task 5 — Calculate Local Limits
Tetra Tech will calculate the Local Limits for the WWTF. At a minimum, local limits will be
evaluated for the following pollutants:
• Ammonia -N
• Arsenic
• BOD
• Cadmium
• Chromium
• Copper
• Cyanide
• Lead
• Mercury
• Nickel
• Selenium
• Silver
• TP
• TSS
• Zinc
• Fats, Oils & Grease
Tetra Tech may also consider additional pollutants as requested by IRCDUS based on local
concerns and the results of the priority pollutant scan.
Tetra Tech will perform a technical evaluation of the local limits using the Local Limit Information
and Development System (LLIDS 2020) program from the FDEP and the current version of the US
EPA Guidance Manual on the Development Implementation of Local Limitations under the
Pretreatment Program (Local Limits Development Guidance, July 2004). The local limits
calculations will be performed based on current flows and the design flow of the WWTF.
Tetra Tech will assess current conditions to determine if existing Maximum Allowable Headworks
Limits (MAHLs) should be recalculated or reallocated, or if additional local limits should be
developed for the program. Tetra Tech will evaluate existing data and will then calculate the
MAHLs for currently regulated POCs and determine MAHLs for each new POC. Based on the
MAHLs for POCs at the WWTF, Tetra Tech will develop local limits using the uniform allocation
TETRATECH
Mr. Richard Meckes.
Indian River County Department of Utility Services
March 7, 2022
Page 5
method or industrial contribution method and assist the IRCDUS in adopting the revised local
limits. If the industrial contribution method is used, additional information on the pollutants
discharged by each significant industrial user (SIU) will need to be provided by the IRCDUS.
Developing Local Limits will involve the calculation of the maximum allowable headworks loadings
based on the following criteria:
• NPDES Permit Limits,
• Pass-through based on reuse for irrigation/sandy soils,
• Treatment inhibition for nitrification and activated biosolids, and
• Biosolids quality for land application.
These criteria will be applied in accordance with current IPP guidelines and requirements of the
FDEP and the USEPA. For the compatible pollutants (BOD, TSS, Total Phosphorous and Ammonia -
N), a basis of design criteria will be considered in addition to the pass-through criteria. Average
background loadings and a safety factor will be deducted from the calculated headworks loadings
prior to being converted into concentration -based limits via the selected allocation method.
Task 6 — Recommendation on Feasibility of Local Limits
Tetra Tech will compare the calculated local limits for the WWTF to select the lower value as the
value calculated for the evaluation. These values will then be compared to the existing local limit
and Tetra Tech will present the results to the IRCDUS for selection of the final local limit value.
Task 7 — Report
The efforts of Tasks 1 through 6 above will be summarized in a Local Limits Technical Evaluation
Report. A Draft Report will be prepared and submitted to the IRCDUS for review and comment.
Upon receipt of comments, the Final Report will be prepared and submitted electronically to
FDEP. Tetra Tech will deliver five (5) paper copies and an electronic copy in PDF format of the
Final Report to the IRCDUS.
Task 8 — IPP Evaluation
Tetra Tech will retain the services of Brown and Caldwell (BC) to conduct an evaluation of the
County's existing IPP. This will consist of both offsite/virtual and onsite tasks that will assess
compliance with federal, state, and local pretreatment regulations. The offsite support will
include the assessment of the following:
• NPDES Permit
• FDEP-issued Pretreatment Program approval documents (if applicable)
• Sewer Use Ordinance/Pretreatment Ordinance
• Enforcement Response Plan
• Implementation Manual (if applicable)
• Industrial User Permits
TETRATECH
Mr. Richard Meckes.
Indian River County Department of Utility Services
March 7, 2022
Page 6
• Permit Applications
The onsite evaluation will consist of three parts: an interview of IPP staff, file review of three
significant industrial user (SIU) files, and site visits to three SIUs. This will include two BC staff
onsite for up to two days. The file review will include the following:
• SIU self-monitoring reports
• SIU inspection reports
• County compliance sampling
• Enforcement actions (if applicable)
BC will compile all findings of both the offsite/virtual and onsite evaluations into a draft IPP
Evaluation Technical Memorandum (TM). The TM will describe any significant findings and
deficiencies. It will also include recommendations for enhancing/improving the program based on
industry best practices.
III. INFORMATION AND SERVICES TO BE PROVIDED BY IRCDUS
• IRCDUS will provide all equipment and materials for collecting all samples and be
responsible for analyzing all samples.
• IRCDUS will provide historical IRCDUS Local Limits information and reports.
• IRCDUS will provide WRFs wastewater flow and quality information from the monthly
operating reports.
• IRCDUS will provide WRFs priority pollutant scan information.
IV. PROJECT SCHEDULE
The approximate duration noted for each task is based on our current understanding and best
estimates of time required to perform the basic services.
OTETRA TECH
Mr. Richard Meckes.
Indian River County Department of Utility Services
March 7, 2022
Page 7
Completion
Project Milestones/Deliverables
Notice to Proceed (NTP)
Weeks from
NTP
Project Kick -Off Meeting
2 weeks
Draft Plan of Study (POS) to City
6 weeks
POS to FDEP
8 weeks
POS FDEP Approval
12 weeks
Receive Analysis Results
16 weeks
Draft Local Limits to City
24 weeks
Local Limits Report to FDEP
28 weeks
IPP Evaluation TM
28 weeks
V. COMPENSATION
The proposed total lump sum compensation for the Scope of Services described in Tasks 1 thru 8
is $71,188. Attachment A presents a detailed breakdown of the estimated compensation for the
Scope of Services.
Task
1
Phase
Project Management
Compensation
$ 7,395
2
Review Existing Data
$ 859
3
Plan of Study
$12,128
4
Sampling and Analysis
$4,654
5
Calculate Local Limits
$7,958
6
Recommendation on Local Limits
$927
7
Report
$14,390
8
IPP Evaluation
$ 22,877
Total Lump Sum
$71,188
Tetra Tech looks forward to working with you on this project. We are available to discuss our
approach with you in detail at your convenience. Should you have any questions regarding this
proposal, please contact me at (407) 480-3970.
Sincerely,
Brenda L Keenan, P.E.
Project Manager
BLK/ab/WRWWTF Local Limit Evaluation.cloc
C: Jon Fox, P.E., Tetra Tech
0 Price Proposal
Labor Plan
5 Resource
Price Summary/Totals
Local Limits Evaluation
Pretreatment Program Local Limits Evaluation
Billing Rate--
202.63
130.34
99.78
118.05 87.49
Total Price
71,188
Submitted to: Indian River County Department of Uti
Contract Type: Lump Sum
Total
Labor Hrs
Y
��
_
d m
Pricing by Resource
W
a
N v
T
W
s
ES
o" p Q o
a� t 0
a
Labor Subs
Task Pricing
ODCs Totals
Project Phases / Tasks
396
88
72
186
14 1
36
50,578
1 20,445
1 165
71,188
Task 1 - Project Management
Kickoff Meeting
Coordination Mtg. (1)
Management
Other Direct Costs
42
10
8
28
----
2
2
6
3
3
6
3
1 3
-
1
2
2
7,230
1,271
1,096
- 165
7,395
1,271
1,096
24 24 4,863
4,863
165
165
ask 2 - Review Existing Data
8
2
6
859
8S9
ask 3 - Plan of Study
Draft to City
Review Mtg.
Draft to FDEP
Respond to FDEP RAI
102
14
14
46
14
14
12,128
12,128
70 6 12 32 12 8
8,089
8,089
14 6 6 2
1,989
1,989
8 2 4 2
835
835
10 2 4 2 2
1,215
1,215
Task 4 - Sampling and Analysis Program
Coordination with City Staff
38
6
8
24
4,654
4,654
10 2 a 1,204
1,204
Review Results
28
4
8
16
3,450
3,450
Task 5 - Calculate Local Limits
66
8
18
40
71958
7,958
Technical Evaluation of Results
56
8
16
32
1
6,899
6,899
Compare to Existing conditions
10
2
a
1,059
1,059
Task 6 - Recommendation of Citywide Local Limits
6
2
4
927
927
Task 7 - Report
122
18
20
64
20
14,390
14,390
Prepare Draft Report
84
a
16
48
12
9,546
9,546
Review Mtg.
14
6
6
2
1,989
1,989
Draft to FDEP
10
2
4
4
1,010
1,010
Respond to FDEP RAI
14
4
2
6
2
1,845
1,845
ask 8 - IPP Evaluation
12
12
2,432
20,445
22,877
Brown & Caldwell Services
12
12
2,432
20,445
22,877
Tetra Tech - Confidential and Proprietary Page 1 of 2 Printed 3/29/2022
Tetra Tech - Confidential and Proprietary Page 2 of 2 Printed 3/29/2022