HomeMy WebLinkAboutTask Order No. 10371 with GSI Water Solutions for Phase 2 Aquifer Conditioning Feasibility Study Wells 18 and 22~~~`~,.
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The Purchasing Department respectfully requests that the following item be placed on the
May 7t" City Council Consent Agenda for Council's consideration.
Approval of Task Order 10371.a for "Phase 2 Aquifer Conditioning Feasibility Study,
Wells 18 and 22" to GSI Water Solutions Inc. for the Not-To-Exceed amount of
$53,100.00... This Task Order is issued in conjunction with the Master Agreement 6a
dated December 6, 2011.
Recommended Council Action: Approval of Task Order 10371.a for the Not-To-
Exceed amount of $53,100.00.
Thank you for your consideration.
Page 1
T Keith Watts
. Kyle Radek
ATEa 4/12/13
SZT CT: Pr®jeet Inf®r ati®; Task rder 10371 with GI star S®lutios, Ina. f®r tease 2
Aquifer C®niti®ig Feasibility Study, ells 1~ and 22, f®r a ®twta-exeee a ®ut
of X53,100. T °s Task ®rder w®uld a rsuant t®t a aster Agree ant doted
ace bar 6, 2011.
1. EP T ~T C TACT PE NS
Kyle Radek, Asst. City Engineer 489-0343
Marren Stewart, PW Engineering IVlanager 489-0350
Tom Barry, Director of Public Works 489-0372
I[. ESC TI~I
~. Background
The City recently completed the fret phase of an effort to determine the feasibility of
using a technique, known as aquifer conditioning, to treat iron and manganese at Wells
18 and 22. This task order encompasses the work required to complete the second phase
of the feasibility study. The second phase is to evaluate whether aquifer storage and
recovery (ASR) and aquifer conditioning will be an efficient and effective means for the
City to mitigate high manganese and iron concentrations at these wells. This aquifer
conditioning feasibility study is currently structured in three phases:
Phase 1: Geochen~ical Feasibility Assessment {completed)
Phase 2: Pilot Test Design (current scope)
Phase 3: Pilot Testing (fixture task)
B. Proposed Pro,~ct
This project is Phase 2 of the overall effort. It includes preparing a predictive
geochemical transport model to design the pilot test, then designing and permitting of the
pilot testing. If the geochemical modeling effort does not identify any fatal flaws, the
City can move forward with Phase 3 Pilot Testing in FY 14 and hall implementation
shortly afterward.
1'a~e l 0~'2
III. ACT
A. Strategic Impact:
This project meets our mission requirements to indentify and prioritize work to
anticipate, plan and provide public services and facilities that support the needs of our
growing community and ensure modern reliable facilities while maintaining financial
stewardship.
This project is directed at our efforts to enhance and protect water quality and is a one of
our primary strategies for addressing brown water caused by iron and manganese.
B. FiscalImpact:
Project Costs
Aquifer Conditioning Feasability, Phase 2 $53,100
Project Funding
Consulting {60-
Approved for Council Agenda:
$53,100
1 I
ate
~a,~e 2 ®f 2
TASK ORDER NO. 10371.a
Pursuant to the
MASTER AGREEMENT FOR PROFESSIONAL SERVICES
BETWEEN
CITY OF MERIDIAN (OWNER) AND GSI WATER SOLUTIONS, INC (HYDROGEOLOGIST)
This Task Order is made this 1 l day of , 2013 and entered into by and between the City
of Meridian, a municipal corporation organized under the laws of the State of Idaho, hereinafter
referred to as "City", and accepted by (GSI WATER SOLUTIONS, INC), hereinafter referred to
as "Hydrogeologist" pursuant to the mutual promises, covenant and conditions contained in the
Master Agreement (Category 6a) between the above mentioned parties dated December 6,
2011. The Project Name for this Task Order 10371.a is as follows:
CITY OF MERIDIAN
Phase 2 Aquifer Conditioning Feasibility Study, Wells 18 And 22
PROJECT UNDERSTANDING
This task order encompasses the work required to complete the second phase of the feasibility
study to evaluate whether aquifer storage and recovery (ASR) and aquifer conditioning will be
an efficient and effective means for the City to mitigate high manganese and iron
concentrations at Wells 18 and 22. This aquifer conditioning feasibility study is currently
structured in three phases:
Phase 1: Geochemical Feasibility Assessment (completed)
Phase 2: Pilot Test Design (current scope)
Phase 3: Pilot Testing (future task)
The Phase 1 Technical Memorandum (February 14, 2013 Draft Technical Memorandum)
documents the results of the geochemical feasibility assessment, and recommends moving
forward with additional feasibility study tasks based on favorable results (Table 1).
Table 1.
Recommended Aquifer Conditionin Feasibilit Evaluation Tasks
TASK PHASE
Prepare a predictive geochemical transport model to design the pilot Phase 2 (Current
test Sco
e)
p
Design, finalize, and permit the pilot program at Well 22
Modif existin wells with tempora pipin to conduct pilot testin
Develop an approach for brief confirmation tests at other locations Phase 3 (Future Task)
where appropriate
Task Order 10371.a Phase 2 Aquifer Conditioning Feasibility Study, Wells 18 and 22 Page 1 of 6
GSI Water Solutions, Inc
Hydrogeologist will subcontract Anchor QEA to provide geochemical modeling assistance for
Phase 2. Hydrogeologist will also subcontract Murray Smith and Associates (MSA) to provide
civil Hydrogeologist support for the pilot test design and cost estimating work.
l'as 1: aciv 1'r ns rt lin
Hydrogeologist recommends building on the geochemical modeling completed for Phase 1
with geochemical reactive transport modeling to design the pilot test. Specifically, the model
will be used to evaluate:
The recommended number of ASR cycles;
The recommended residence time for stored water;
The recommended recovery approach (full or partial for initial cycles);
Recovered water quality relative to the last cycle's recovery efficiency (the expected
breakthrough curve).
The model will be implemented in PHT3D; a simulator which couples the chemical modeling
capabilities of PHREEQC with the groundwater flow and transport code MODFLOW/MT3D.
PHT3D has been applied to a wide range of groundwater quality analyses, including ASR.
The well and aquifer hydraulic and transport properties used in the analysis will be based on
information and data compiled from well drilling and construction logs, pumping tests, and
published sources of hydrogeologic data (for example, Idaho Water Resources Research
Institute Technical report IWRRI-204-01). The representation of concentrations of reactive
mineralogy and geochemistry of the aquifer in the vicinity of the well will be based on our
geochemical modeling analysis from Phase 1 and previously published studies (for example,
Idaho Water Resources Research Institute Technical Report IWRRI-2002-08).'The chemical
composition of native and injected groundwater will be defined based on available water
chemical analyses.
The geochemical processes simulated will include dissolution and precipitation of iron and
manganese minerals in the aquifer in response to changes in groundwater chemistry and
redox conditions as water is injected and withdrawn from the well. In addition, the partitioning
of dissolved ions between groundwater and aquifer mineral surfaces by adsorption will be
simulated. Mineral dissolution/precipitation processes will be represented by either equilibrium
and/or kinetic reactions as appropriate. Adsorption occurs via two processes: (1) surface
complexation on iron and manganese oxides, and (2) cation exchange on clay minerals, both
of which will be represented by equilibrium reactions.
The model will simulate an injection cycle during which the oxidizing injection water will react
with native groundwater and aquifer minerals to produce an oxidized zone around the well.
This injection cycle will be followed by an extraction cycle during which the injected water is
withdrawn and the native groundwater reacts with the conditioned aquifer zone to achieve in
situ iron and manganese removal prior to being extracted. The simulated extraction cycle will
be continued until breakthrough of iron and/or manganese occurs at the well in order to
Task Order 10371.a Phase 2 Aquifer Conditioning Feasibility Study, Wells 18 and 22 Page 2 of 6
GSI Water Solutions, Inc
evaluate the ratio of treated extraction volume per injection volume. Multiple
injection/extraction cycles will be simulated to predict how this ratio will change with time over
multiple conditioning cycles. The pilot test will be designed to verify the model predictions and,
if necessary, provide refined estimates of key model parameters.
The end-product of the reactive transport model will include a tool that will have utility to the
City if they decided to evaluate either expanding the program or evaluating other geochemical
issues. The verified model could be easily adapted to pilot test or full-scale implementation
designs at other wells, providing a quantitative tool for evaluating potential consequences of
future operational changes on produced water quality from the conditioned wells.
Consequently, the level of effort for this first phase of reactive transport modeling is higher than
would likely be required for future projects.
If the reactive transport modeling suggests that the amount of water or time required to
develop an efficient recovery system is impractical, then the City may elect to end the pilot
program at this step.
eliverale: A technical memorandum describing modeling results and pilot test design
recommendations.
as ~I s esi
Using the Task 1 results, Hydrogeologist will work with City staff to develop:
1. The specific recharge approach; manifold, valuing, materials, and instrumentation;
2. Volume and rate targets; designed to reflect operating conditions to the extent practical;
3. Monitoring approach; locations, instrumentation, level of assistance, sampling protocol,
and analytical program;
4. Recovery method; existing pump, temporary equipment, long-term rental, or
install/remove with each cycle;
5. Recovered water management; waste location, rate limitations, potability confirmation
target, potential to recover water to the City's distribution system.
Development of this information will result in a Pilot Test Workplan sufficient to support the
City's injection well permit application (Task 4).
Hydrogeologist and MSA will prepare for and facilitate a workshop with City staff to evaluate
how best to arrange recharge design, test rates, instrumentation, potential to use of existing
pump, and waste discharge management. We will develop a buildup (mounding) analytical
model, will review nearby well locations, and will design an observation well network. A
monitoring program will be presented for discussion, including instrumentation, groundwater
sampling schedules, laboratory analytical program, and technical support. We have assumed
that this will be a four hour workshop that will require time to prepare and review as-built
drawings.
eliverales:
1. PDF of draft pilot testing plan (11x17 template)
Task Order 10371.a Phase 2 Aquifer Conditioning Feasibility Study, Wells 18 and 22 Page 3 of 6
GSI Water Solutions, Inc
2. PDF of final pilot testing plan (11x17 template)
s it® rr t si ate
Once the pilot test approach is finalized in Task 2, the Hydrogeologist team will acquire
detailed design, contractor, analytical, and labor cost estimates specific to the selected test
approach. The City may elect to cancel or defer the pilot test program at this stage depending
on budget constraints.
Hydrogeologist and VISA will contact vendors, construction and pump contractors, and
analytical laboratories to compile test-specific costs for developing the temporary facilities and
for implementing the selected test approach at Well 22. In addition, fees for consulting
services specific to the testing/monitoring approach will be developed and included in the total.
We have estimated 1 week will be required to prepare these estimates.
eliverable: a brief memorandum documenting pilot program implementation costs.
s r iti n
This Task is included in Phase 2 to ensure that the permitting process will not result in
unanticipated effort that will influence the Phase 3 Pilot Test program.
The Idaho Department of Water Resources (DWR) will require a permit to "construct, modify,
or maintain" an injection well through their Underground Injection Control (UIC) Program
administered for the USEPA. This is a relatively simple permit that focuses on the location and
construction details of the proposed injection well. DWR indicated they would request apre-
application meeting to review the project intent, approach, and geochemical compatibility
results. As part of the permit submittal, it is likely that the geochemical results and some of the
City's water quality data will be required for DWR review.
Hydrogeologist will organize apre-application meeting with DWR to present the geochemical
modeling results, testing plan, observation network, and monitoring plan. Hydrogeologist will
then prepare a permit application for the City to submit. We have assumed two days of
preparation time and one three hour meeting will be required. Hydrogeologist will prepare a
well location map. We suggest structuring the permit to include all of the City's wells that may
be considered for use as ASR wells.
The permit application must be publicly advertised fora 30 day period and we have assumed
that the City will submit the $100 processing fee. Assuming there are no issues with the
monitoring plan or public comment, DWR suggested that the permit may require two months
from submittal to approval. Hydrogeologist would explore with DWR the possibility of
structuring the permit to include all of the City's wells that may be considered for use as ASR
wells. This would require including a permit condition that a monitoring plan, geochemical
evaluation, and test description be submitted prior to conducting each pilot test, and test
results approved prior to construction of permanent facilities.
eliverable: A UIC permit application.
Task Order 10371.a Phase 2 Aquifer Conditioning Feasibility Study, Wells 18 and 22 Page 4 of 6
GSI Water Solutions, Inc
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We have assumed that:
No telemetry will be required for automatic valves (i.e., all ASR pilot testing will be done
by manually operating valves and pumps).
City staff will use their existing hydraulic system model to evaluate the maximum
recharge rate for testing and long term operations.
Pilot test design will consist of a 1-page plan.
The Task 2 Pilot Test Workplan will satisfy IDWR's permitting requirements without
revision.
Bidding documents are not required.
Construction cost estimates are intended as a tool to help MSA, Hydrogeologist, and
the City evaluate and manage the project from a budgetary perspective. The relative
accuracy of this work will be dependent on the available resources available at the time
the work is performed (e.g., contractor and supplier quotes). MSA will endeavor to
produce these opinions within the accuracy ranges identified in AACE International's
Recommended Practice Document No. 18-R-97.
Construction cost estimates can be expected to vary from actual construction costs due
to a number of factors, many of them outside the control of the City, Hydrogeologist, or
MSA. These factors include, but are not limited to, type of procurement (e.g., bid, quote
solicitation, sole source), volatility and unknowns regarding commodity pricing, the labor
market, inflationary escalation, etc.
The following schedule is based on a Notice to Proceed (NTP) from the City by April 11, 2013
and resulting in Final Design being completed by August 1, 2013. A NTP issued on a different
date will change the schedule accordingly.
COMPENSATION AND COMPLETION SCHEDULE
Task Description Due Date Compensation
1 Reactive Transport Geochemical Modeling (both we11s) May 15 $ 26,400
2 Pilot Test Design June 20 $15,400
3 Pilot Program Cost Estimate July 3 $ 6,700
4 Permitting August 1 $ 4,600
TASK ORDER TOTAL $53,100.
The Not-To-Exceed amount to complete all services listed above for this Task Order No.
10371.a is fifty three thousand one hundred dollars ($53,100.00). No compensation will be
paid over the Not-to-Exceed amount without prior written approval by the City in the form of a
Task Order 10371.a Phase 2 Aquifer Conditioning Feasibility Study, Wells 18 and 22 Page 5 of 6
GSI Water Solutions, Inc
Change Order. The hourly rates for services and direct expenses are per the Master
Agreement (by this reference made a part hereof) and Will be the basis for any additions and/or
deletions in services rendered. Travel and meals are excluded from this Task Order unless
explicitly listed in the Scope of Services AND Payment Schedule.
CITY OF MERIDIAN
GSI WATER SOLUTIONS, INC
BY: ! ~
BY: Qt`~.~
TAMMY de W ,MAYOR
Dated: ~ ~ ~ ` / 3 Dated: 1 .Z l \
Approved by Council: ~ aQ
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Attest: ? ~~~
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L LMAN, CITY LERK II~I-A t~I~--
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Purchasing Apprav I 9
FyTf ~~FCe TRFa~,a ment Apr
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KEIT ATTS, Purchasing Manager WAFT EN STE RT, Engineering Manager
Dated: Z
City Project Manager
Task Order 10371.a Phase 2 Aquifer Conditioning Feasibility Study, Wells 18 and 22 Page 6 01 6
GSI Waler Solutions, Inc