HomeMy WebLinkAboutC2019-054 - 3/7/2019 - NA TASK ORDER NO. 37
This Task Order pertains to a Master Services Agreement for Professional Services by and between City of Corpus
Christi, Texas (City) and LNV, Inc. (Consultant) dated August 16, 2016 (Agreement). Consultant shall perform
services on the project described below as provided in this Task Order and in the Agreement. This Task Order
shall not be binding until it has been properly signed by both parties. Upon execution, this Task Order shall
supplement the Agreement as it pertains to the project described below.
PROJECT NAME/NUMBER: Water and Wastewater Treatment On-Call Support, E16264
1. PROJECT DESCRIPTION-This project provides the Utility Department with on-call services to assist with
any technical,operational, maintenance,diagnostic and design concerns for the City's O.N.Stevens Water
Treatment Plant and six wastewater treatment plants.
2. SCOPE OF SERVICES- Wastewater Collection System Odor Control Implementation more fully described
in Exhibit A.
3. COMPENSATION-The total amount not to exceed for Task Order No. 37 only is $85,865.50.
This Task Order is approved and Consultant may proceed. All other terms and conditions of the Agreement
remain in full force and effect.
CITY OF CO• •U: RISTI LNV, INC.
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Jeff H. Edmonds, P.E. Date ;pi- z407
. Leyendecker, P.E. Date
Director of Engineering Services President
801 Navigation, Suite 300
Corpus Christi, TX 78408
(361)883-1984 Office
loganb@Invinc.com
Fund Name Accounting Unit Account No. Activity No. Amount
Wastewater Operating Fund 4200-33000-042 530000 1 E16264-01-4200-EXP $85,865.50
C2019-054
3/07/19
LNV Inc.
Task Order No. 37
SCANNED
City Project No. E16264
Professional Services Contract
City of Corpus Christi
Water/Wastewater Treatment On-Call Support
Task Authorization 37 — Wastewater Collection System Odor
Control Implementation
February 18, 2019
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Exhibit A
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SCOPE OF WORK
Project No. E16264
Water and Wastewater Treatment On-Call Support
Task Authorization 37—Wastewater Collection System Odor Control Chemical
Implementation
BACKGROUND
The City of Corpus Christi currently uses ferrous sulfate for odor control in parts of their wastewater
collection system. The use and dosage of the chemical was largely based on the City's historical
experience and locations of odor complaints from residents.
In the recent past, the City decided to evaluate alternate chemical products to effectively address odor
complaints and reduce corrosion of components in the wastewater collection system. A part of this
evaluation has been completed under E16264-TA21-Waswater Collection System Odor Control Chemical
Assessment.
The following describes the typical key tasks in evaluating collection system odors and selecting
appropriate treatment strategies including application of chemical(s). Under TA 21, Stage 1 of the
evaluation(steps 1 through 3)was completed.
I. Stage 1:(Tasks Completed Under TA21)
1. Historical Review-Review of historical liquid and gas phase data,flows,customer
complaints and known trouble areas.
2. Additional Sampling-Field/bench-scale testing to augment gaps in historical data
3. Drivers,Treatment Goals,and KPI Development—
• Evaluation of odor causes and selection of appropriate treatment regarding odor.
• Identification of any odor impacts from industries or individual customers.
• Narrow down list of potential treatment options to be bench tested.
• Establish and define Key Performance Indicators(KPIs).
II. Stage 2:(Tasks Proposed Under TA37)
4. Bench Scale Chemical Addition Evaluation—Bench/pilot-scale testing to evaluate the
efficacy of selected treatment chemicals
5. Selection and Implementation—Selection of appropriate chemicals and
design/implementation of treatment facilities
6. Training and Monitoring-Monitoring strategy to optimize odor treatment
1
Exhibit A
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LNV
As part of the work completed under TA 21,LNV/Hazen recommended:
• The City implement magnesium hydroxide chemical addition for odor control at critical
locations to resolve odor issues in the collection system.Ferrous Chloride was recommended
as a back-up,in case magnesium hydroxide was not found to be suitable for certain locations.
• Dose optimization at key locations upstream of the sites,with the potential to reduce the cost
of implementation for both magnesium hydroxide and ferrous chloride.
• Vapor phase treatment to be considered as a potential future treatment option, in case
chemical addition does not sufficiently address odor issues in the system.
PURPOSE
The purpose of this task authorization is to continue the work completed under TA 21 and implement the
recommendations. The task authorization proposes to complete stage 2 of the alternative odor control
strategies assessment through the tasks listed below:
Stage 2:Proposed Tasks
4. Bench Scale Chemical Addition Evaluation—Bench/pilot-scale testing to evaluate the
efficacy of selected treatment chemicals(magnesium hydroxide and ferrous chloride)
5. Selection and Implementation—Selection of appropriate chemicals and
design/implementation of treatment facilities
6. Training and Monitoring-Monitoring strategy to optimize odor treatment
SCOPE OF WORK
ADDITIONAL SERVICES:
TASK 0009-GENERAL ENGINEERING
4. Bench Scale Chemical Addition Evaluation
The purpose of this task is to determine and optimize the dosage of magnesium hydroxide and ferrous
chloride at key locations identified in the wastewater collection system.This will be accomplished through
the following steps:
• Wastewater Collection System Modelling: Run the City of Corpus Christi Wastewater Hydraulic
Model to determine flow balance at locations identified below:
o 42-inch McArdle trunk line
o Wooldridge Lift Station
o Everhart/Staples Lift Station
o Arcadia Lift Station
The flow proportion of upstream collection mains and force mains feeding these locations will be
determined and used to optimize dosage of chemicals,potentially leading to savings in chemical costs.
2
Exhibit A
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• Field Sampling Plan: Develop a field sampling plan to present the locations selected for sampling
(based on hydraulic model), number and type of samples to be collected and test parameters to be
analyzed.Coordinate with City staff and vendors to schedule field sampling and bench-scale testing.
• Field Sampling: Provide City with field sampling plan and accompany City staff to assist with field
sampling. Liquid and gas phase data is to be collected at each site along with two (2) liquid grab
samples.Each location will be sampled for dissolved sulfides,total sulfides,gas phase H2S,pH and
Alkalinity.
• Bench-Scale Testing: Assist City staff in conducting bench-scale testing for a maximum of four(4)
sites to determine appropriate doses of magnesium hydroxide and ferrous chloride.The Engineer will
be present during the first full day of testing.Additional assistance will be provided if requested by the
City for up to eight(8)hours.
• Technical Memorandum:Prepare a technical memorandum consisting of:
o Summary of flow rate data for flows entering the targeted odor mitigation locations
o Field sampling results
o Bench scale testing results
o Recommended chemical dosage,and estimated amount of each chemical to be used
at each dosing location.
Notes on Scope of Work:
i. The exact number of field sampling locations will be determined by running the hydraulic
model. Number of sites may vary depending on the number of locations contributing
significant flow at a lift station. At present,it is estimated that the number of sampling sites
will vary between 25-35.
ii. Field sampling/bench scale testing may have to be done under non-summer conditions due to
project scheduling. A subsequent sampling/bench scale testing may be done later (not
accounted for in this scope of work)to capture the summer conditions.
iii. The Engineer will provide gas phase data collection devices(OdaLogs)and liquid phase kits
for field sampling. Magnesium hydroxide and ferrous chloride required for testing will be
provided by vendors.
iv. The City will share bench-scale testing results with the Engineer.The Engineer will compile
and document the results in the technical memorandum.
Deliverables:
i. The Engineer will provide the City with an electronic copy of the Field Sampling Plan
consisting of the locations selected for sampling,number and type of samples to be collected
and test parameters to be analyzed.
ii. The Engineer will prepare a draft technical memorandum for City review. Based on City
review comments,the Engineer will then finalize the technical memorandum and submit an
electronic copy and one(1)hard copy to the City.
3
Exhibit A
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Meetings:
i. The Engineer will conduct a one (1) hour kick-off meeting with concerned City staff to
discuss project goals,timeline and proposed course of action.
ii. The Engineer will conduct a two (2) hour submittal review workshop to discuss draft
memorandum with City staff and obtain review comments.
City Responsibilities:
i. It is assumed that all tasks highlighted in yellow within the scope of work section will be led
by City staff.
ii. The City will provide the Engineer with any flow data available for the identified locations.
It is requested that data be provided within two(2)weeks of request in order to avoid delay
in project schedule.
iii. It is assumed that City will take the lead on conducting field sampling.Engineer will provide
the City with a field sampling plan and accompany City staff to assist with sampling. It is
assumed that it will take two(2)teams 1.5 days to collect initial samples followed by another
1.5 days to collect the second round of samples seven (7) days later. Each team will be
assisted by an Engineer/EIT.
iv. It is assumed that City staff will take the lead on conducting bench-scale testing. Engineer
will be present for the first day of testing and provide additional assistance as requested for
up to eight(8)hours.
v. The City will provide lab space, sample bottles,jar test apparatus and other laboratory
equipment necessary at one of the City's WWTPs to perform bench scale testing. The
Engineer,in coordination with the City,will provide two(2)weeks' notice to City staff for
required lab testing and analysis.
Schedule:
Refer to Attachment B.
5. Selection and Implementation
The purpose of this task is to provide assistance to the City in the implementation of selected
odor control chemicals at identified sites. Since ferrous chloride cannot be implemented in the
short-term in the Oso WWTP basin,magnesium hydroxide will initially be implemented.This is
intended to be accomplished through the following steps:
• Specification Development: Develop a draft and final chemical/vendor procurement
specification. Assist the City in clearly defining odor treatment goals before finalizing
procurement documents.The City will use this specification to procure a turn key chemical
vendor via the purchasing department. This task also includes support during bidding to
provide additional clarifications as requested.
• Implementation Support: Provide up to 40 hours of miscellaneous coordination support
to the City for the vendor system implementation(e.g., site visits,clarifications,etc.).
4
Exhibit A
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• Data Review and Optimization Assistance: The City will collect liquid and gas phase
sampling data following vendor system implementation. The Engineer will assist with
trouble shooting and provide assistance with data analysis as needed.
Deliverables:
i. The Engineer will prepare a draft chemical/vendor specification for City review. Based on
City review comments,the Engineer will then finalize the document and submit an electronic
copy and one(1)hard copy to the City.
Meetings:
i. Conduct a one(1)hour specification review workshop to discuss draft specification with City
staff and obtain review comments.
ii. Attend one(1)hour pre-bid meeting for chemical procurement
iii. Schedule two (2) hour site visit for prospective bidders to understand field
requirements/logistics to aid in their pricing
iv. Conduct one(1)hour meeting with selected vendor to review their implementation plan
v. Conduct up to two (2) meetings with City staff to coordinate and assist with
implementation
vi. Participate in weekly coordination calls(up to four(4))during data review task
City Responsibilities:
i. It is assumed that all tasks highlighted in yellow within the scope of work section will be led
by City staff.
ii. It is assumed that City will handle all vendor procurement procedures. The Engineer will
assist with the process as mentioned above.
iii. The City will collect liquid and gas phase sampling data following vendor system
implementation with a frequency of once per week for the first month and once every two
weeks for the second month.The City will provide the data to the Engineer in an excel format.
iv. City staff will provide sampling equipment, LaMotte dissolved sulfide test kit, and
OdaLogs for liquid and gas phase sampling.
Schedule:
Refer to Attachment B.
6. Training and Monitoring Plan
The purpose of this task is to assist the City monitor and proactively manage the odor control
measures implemented under the previous tasks. The Engineer will provide appropriate odor
control training to City staff and assist with the development of an odor monitoring tool. The
following effort is proposed:
• Develop Odor Complaint Form: Assist the City in developing an odor complaint template
for use by the City when processing a customer odor complaint. The City will add the
template to their work order generation system(Maximo).
5
Exhibit A
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Odor Control Training: Conduct a 1-day odor control training for a designated team of
staff identified by the City to achieve the following:
o Identification of types of odors
o How to sample and analyze odor constituents (this will include desktop and hands-on
training)
o Understanding the key performance indicators
o Proactive monitoring/trending/optimization
o Strategies for corrective action based on performance data
o How to process a customer odor complaint utilizing the complaint form developed by
Consultant.
• Monitoring Tool: Develop an Excel template to assist the City's designated odor control
team track and manage the odor control measures based on the Key Performance Indicators
(KPIs) identified in TA 21. The City will utilize Operator 10 software based on the Excel
template developed by Engineer. The purpose of the Excel template will be the optimization
of magnesium hydroxide addition in the initial sites implemented, with the vision of
expanding the tool in the future. The Excel template for odor control chemical addition
management based on KPIs will consist of the following items.
o Location of site sampled,date and time
o Sampler name
o Parameters and frequency
o Template graphs(H2S concentration and dissolved sulfide concentration trends)
o Explanation of when action needs to be taken(results in relation to KPIs)
o Lay out staged response actions to be taken if either above or below KPI
• Shadow City Team: Observe the City's designated odor control team to aid in
implementation of the monitoring plan. The Engineer will shadow the City's team for one
(1) day per week for a duration of one (1) month following the odor control training.
Consultant will monitor odor data collection procedures, data entry, and confirmation of
reactive decisions needed.
Deliverables:
i. The Engineer will provide the City with an odor complaint form in electronic form.
ii. The Engineer will prepare a PowerPoint presentation for the odor control training.
iii. The Engineer will develop an Excel template to assist the City develop an appropriate
monitoring tool.
Meetings:
i. Conduct a one(1)day odor training workshop as described above.
ii. Conduct up to two(2)meetings with City staff to discuss the development and use of odor
complaints form and monitoring tool excel template
6
Exhibit A
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LNV
City Responsibilities:
i. The City will identify staff to attend the odor control training workshop.
ii. The City will utilize Operator 10 software based on the Excel template developed by
Engineer to create monitoring tool.
Schedule:
Refer to Attachment B.
FEE
The services for this task authorization will be provided on a Time and Materials basis as the project is
moved towards completion. The anticipated amount for this task authorization is $85,865.50. as shown
in ATTACHMENT A.The Engineer shall not incur cost in excess of this not-to-exceed amount without
prior written authorization from the City.
7
Exhibit A
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LNV
TASK AUTHORIZATION MANAGER
The Task Authorization Manager will be the primary contact person during the performance of this
work. All correspondence or inquiries should be addressed to the Task Authorization Manager.
8
Exhibit A
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ATTACHMENT A
MAN-HOUR AND FEE ANALYSIS
LNV Inc. ertndneiNP Prolect ma. Proje4tEJOPM.PRIMMINIERIMPRIP
$ 265.00 $ 205.00 $ 170.00 $ 195.00 $ 120.00
Task Description Hrs. Sub-total Hrs. Sub-total Hrs. Sub-total Hrs. Sub-total Hrs. Sub-total Total Hrs. Total Fee
0009 General Engineering
4.Bench Scale Chemical Addition Evaluation
-
WW C011eclion System Modeling $ - 2 5 410 8 $ 1,360 8 $ 1,080 $ -
- Sampling Test Plan 5 - 1 S 205 4 5 680 8 5 1,080 $ - 13 5 1,960
- Field Sampling 5 - 2 5 010 5 - 4 $ 540 4 $ 480 10 $ 1,430
- Bench Scale Testing 5 - 2 S 410 $ - 8 $ 1,080 $ - 10 $ 1,490
- Draft and Final Technical Memorandum 1 5 265 2 5 410 4 $ 680 12 5 1,620 4 5 480 23 $ 3.455
- Meetings 5 - 4 $ 820 5 - 8 5 1,080 5 - 12 $ 1,900
S.Selection and Implementation '
- Specification Development I $ 265 2 5 410 2 $ 340 4 5 540 S - 9 5 1,555
- Meetings 5 • 8 5 1,640 5 • 16 5 2,160 5 - 24 S 3,800
- Implementation Support 5 - 5 - 5 - 8 5 1,080 8 5 960 16 5 2,040
- Data Review and Optimization Assistance 5 - 2 5 410 5 - 4 $ 540 5 • 6 5 950
6.Training and Monitoring Plan
- Develop Odor Complaint Form 5 - 2 5 410 5 - 4 5 540 $ - 6 5 950
- Odor Control Training 5 - 4 5 820 $ - 16 5 2,160 5 - 20 5 2,980
- Monitoring Tool 5 - 1 $ 205 $ - 2 5 270 5 - 3 S 475
- Shadow City Team $ - 5 $ 16 5 2,160 r $ 16 $ 2,160
IIESub totals a $ 530 32 , 5 15,930 16 $ 1,920
Hazen and Sawyer Principal/VP Wa Sento,erolectEngineer I Senior Project Engineer li ProjectEna,nee, i1 00000
5 285.00 5 305.00 $189.00x-
' - - TI Administrative Fee Total Fee
Task Description Hrs. Sub-total Hrs. Suh-total Hrs. Sub-total Total Hrs. Total fee OINs
0009 General Engineering
4.Bench Scale Chemical Addition Evaluation
- WW Collection System Modeling 5 - S - 5 - S 5 - 5 - 0 5 -
Sampling Test Plan 5 - 4 5 1,220 2 5 370 5 8 $ 960 16 5 1,760 30 5 4,310.03
- Field Sampling 5 • 5 - 5 - S - 24 $ 2,820 24 $ 2,640 48 5 5,520.00 5 5,300.00
- Bench Scale Testing 5 - S - 8 5 1,480 5 • e $ 960 5 - 16 $ 2,440.00 5 850.00
- Draft and Final Technical Memorandum 1 5 285 2 5 610 $ 5 - 10 5 1,200 40 5 4,400 53 5 6,495.00
- Meetings 2 5 570 2 5 610 5 - 5 - 4 5 080 8 5 880 16 $ 2,540.00
5.Selection and Implementation
Specification Development 1 5 201 2 5 610 5 8 $ 1,320 5 - B 5 880 19 $ 3,095.00
- Meetings 1 $ 285 5 - S - 8 5 1,320 8 5 960 16 $ 1,760 33 5 4,325.03
- Implementation Support 5 - 5 5 5 _ 5 - 20 5 2,203 20 5 2,200.00
Data Review and Optimization Assistance 5 2 5 610 S - 12 5 1,980 5 • 4 5 440 18 5 3,030.00
6.Training and Monitoring Plan
- Develop Odor Complaint Form 5 - 0 5 305 5 • 2 5 330 5 4 5 440 7 S 1,075.00
- Odor Control Training 1 5 285 8 5 2,440 5 5 - $ - 12 5 1,320 21 5 4,04500 S 70000
- Monitoring Tool 2 $ 570 1 S 305 5 - 12 $ 1,980 5 - 16 5 1,760 31 5 4,615.00
Shadow City Team 5 - I 5 305 5 - 5 - 5 - 16 5 1,760 17 $ 2,06500
Subtotals 8 $ 2,280 23 $ 7,013 10 $ 1,050 42 B 6,930 $2 $ 1,440 184 $ 20,240.00 329 $ 45,755.00 $ 6,850.00 $ 5,240.50 $ 57,865.50
TOTAL FEE(LNV+HAZEN)_ $ 85,865.50
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TA 17-Wastewater Collection System Odor Control Implementation
ATTACHMENT B:SCHEDULE
Weeks
TASK TASK DESCRIPTION
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
0009 General Engineering
I Bench Scale Chemical Addition Evaluation
a.VWVCoIIecSon System Modeling W
A
. :.
b.Sampling Test Plan REVIEW
c.Field Sampling
d.Bench Scale Testing
A
e.Meetings to
II Selection and Implementation
a.Specification Development
b.Meetings
c.Implementation Support '
VENDOR SELECTION(CITY)
VENDOR
IMPLEMENTATION
d.Data Review and Optimization Assistance
Ill Training and Monitoring Plan
CITY
a.Develop Odor Complaint Form REVIEW
b.Odor Control Training VENDOR SELECTION(CITY) VENDOR
IMPLEMENTATION
CITY
c.Monitoring Tool REVIEW
d.Shadow City Team
Note: 'Vendor selection(by City)assumed to be 6 week duration.
'Vendor implementation assumed to be 2 week duration.
cat
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Attachment B
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