HomeMy WebLinkAboutContract 43560-A1 C ITY SECRETARY
AMENDMENT No. 1 CONTRA r--,,',Tl NO,
TO CITY SECRETARY CONTRACT' No. 43560
WHEREAS, the City of Fort Worth (CTTY) and CP& , 1nc, (ENGINEER)
made and entered into City Secretary Contract No. 43560, the CONTRACT)
which was authorized on the 3 day of July/ 2012 in the amount f
W`HERFAAS the CONTRACT nvoives engineering services for the
following project :
Prima r
Clar 'f _ Process Evaluation for the Village Creed Wa Ler
Recla i s ti o Facility; and
WHEREAS, it has become necessary to execute Amendment No. 1 to the
CONTRACT to include an increased scope of work and revis,ed fee
NOW THEREFORE, CITY and ENGINEER, acting herein by and through their
duly authorized representatives, enter Into the following agreement,,
which, amends the TRACT
i
Article I of the C'ONT'RACT is amended to include the additional
engineering servi, ces s ecified in Attachment A, Engineering Agreement
Amendment. The cost to City for the additional desi n services to e
performed by Engineer totals $26, 900.
2 .
Article II of the CONTRACP is amended to provide for an increase in
the fee to e p,aidi. to Engineer for a1l work and services performed under
the Contract, as amended, s .th t the total fee paid. by -the City for all-
work and services shall be an amount of $49, 980.
3 .
C i ty o f Fo rt Wo rth OFFICIAL RECORD
FFII
Professional Services Agreement Amendment Template
O Official R Ie se 8/1/201 1 2" CITY SECRETARY
Page 1 of
EF
"a WORTMy TX
RECEIVED APR � f
All other provisions of the Contract, which are not expressly
amended herein, shall remain in full force and effect .
EXECUTED and EFFECTIVE as, of the date last written by a signatory,,
below.
APPROVED:
City of Fort Worth ENGINEER
MIA"
Fe do Costa Michael F. Graves',, PE
Assistant City Manager Vice Pres.1dent
DATE: DATE:
-7 .............
APP,ROV ECOM MEN
DED:
S., Frank Crumb, PE
Directoir, Water Department
APPROVED AS TO, FORM AND LEGALITY: M&C
Date: t.
Douglas W. Black
Assistant City Attorney
ATTEST.-
a
Mary J. U&y Se 69000,00010
Cy Sec Teary
City of Fort Worth
Professional Services Agreement Amendment Template OFFICIAL RECORD '
PMO Official Release 8/1/2012 CITY SECREIrARY
Page 2 of 3
Fire WORTH, rx
City Secretary Contract No.
ATTACHMENT A
SCOPE OF SERVICES
ENGINEERING AGREEMENT
AMENDMENT WITH
CITY OF FORT WORTH
AND
CPI&Y; INC.
FOR
Primary Clarifier Process, Evaluation
FOR
VILLAGE CREEK WATER RECLAMATION FACILITY
The City of Fort Worth (City) is looking for CP&Y (Engineer) to conduct a process evaluation on
the primary c,l�arifiers, including a feasibility pilot study of low-dosage chemically enhanced
primary treatment (L-CE PT TM) process for improving the performance of Primary Clarifiers at
the Village Creek Water Reclamation Facility (VCWRF .
This scope of work for Task 111 is in addition to Tasks I and 11 previously approved. CP&Y has
completed Task I and 11 briefly described below and will perform Task III as stipulated in this
Amendment.
Task I included the process evaluation that consisted of conducting a sampling program for
calculating mass balance and removal efficiencies for each size of primary clarifier and type of
primary influent wastewater., Perform�ance evaluation under different, flow conditions and/or ferric
i I :
sulfate addition was included' depending on, plant conditi ons.
Task 11 consisted of conducting a bench scale study for L-CEPT TM. The L-CEPT TM is a process
in which coagulant chemicals are added at low dosage prior to the primary clarifiers to enhance
the performance of settling during primary treatment.
'Task III includes the following additional tests requested by the City- (a) Subtask 1111-A, the
additional field and bench-scale tests requested by the City to duplicate work under Tasks, I and
11 for one (1) week, and (b) Subtask 1111-13, the technical assistance, in SaIsnes pilot test
conducted by the City for four (4) weeks.
The following engineering activities are identified' and revised by Engineer for the Task, III of'the
process, evaluation and feasibility study for the VCWRF:
Task III: Additional Tests Requested by City
Sub-Task III-A.- Additional Field and Bench-Scale Tests
III-A-1 Field and Bench-Scale Tests
111-A-2 Data Analysis
Sub-Tas,k III-B.- Assistance "in SaIsnes Pilot,Test
111-13-1 Develop Test Protocol
Contract No. Page-11 March 14,2013
III-B-2 Preparation
I'll-B-3 Filter Tests
III'-B-4 P,il'ot Test
III-B-5 Data Summary
III-B-6 Final Workshop
Both subtasks under Task III will be performed concurrently. Therefore,, all tests, included,
including field performance, test, bench-scale jar tests and SaIsnes pilot test are performed on
the same baseline.
The work described below refers to, the engineering activities proposed for the feasibility pilot
study.
Task Items under Task III Rev'lsedl fir Addiftl'onall Tests Requested b City
As part of the professional engineering services proposed to complete the feasibility study,
Engineer will perform the following additional sub-tads with assistance from the City:
Sul -T:ask 111111-A.- Addlt*loral Field and Bench-Scale Tests
Task IIIIII-A-11 Field and Benc h-Scale Tests
1. Engineer will draft a schedule samplilng, and analysis for both field and bench-scale tests.
The draft schedule will be submitted to City for review. Engineer will finalize the schedule
to incorporate review comments by City.
2. Engineer will assist City in collecting samples and preparing the sampil�es to City's
laboratory for analysis in accordance with the schedule for-field performance tests.
a. Three (3) primary clarifiers will be monitored and evaluated. One (1) of the small and
two, (2), of the bigger primary clarifiers.
b. Samples will be collected for a period of 5 days during one week.
3. Engineer will perform the jar tests in accordance with the protocol.
a. The chemical combinations tested in the jar tests are as follows-
i. Ferric sulfate w/ polymer
ii. Ferric sulfate w/ magnesiurn hydroxide
iii. Ferric sulfate w/ hydrogen peroxide
b. Engineer wild calculate chemical dosages and prepare stock chemicals.
c. Engineer will perform at least one (1) jar test run for each chemical combination on
each testing sample collected.
Contract,No. Page-2 Mlarich 114,2013
d. Engineer will collect raw siarnples from the influent flumes to the bigger primary
clarifiers for the jar tests.
e. Engineer will prepare and send samples to City's laboratory for analysis in
accordance with the schedule.
4, City will' provide analytical work in accordance with, the schedule.
5. Engineer mill analyze some, of the samples ulsing, field kits to expedite the work.
6. City will provide chemical reagents used by the field kits for the jar test samples.
Task 111-A-2 Data Anallysi"s
11., Engineer will compile experimental data obtained' from the jar tests.
2. Engineer will assist City in compiling experimental data obtained frorn the field
performance tests,
3. Engineer will summarize the experimental results with City staff., Information will be
deliveired in the form of a briefing letter. A detailed evaluation report is considered
additional work.
Sub-Task III-B-, Assistance 1*n Salisnes Pilot Test
Task 111111-113-1 Develop Test Protocol
1. Engineer will draft, a protocol for the SaIsnes pilot tests. The draft protocol will be
prepared based on the information provided by Trojan Technologies. It will be submitted
to City for review. Engineer will finalize the protocol to incorporate review comments by
City.
2. The pilot unit will tested using the wastewater sample pumped from the combined
influent channel to, the small clarifiers and screened, raw wastewater from Box G or H.
Aft er pilot testing, both effluent and' sludge from the pilot unit, will be routed black to a
location downstream of the same channel.
3. The feed rate to the pilot unit is monitored by a flow meter installed on the rental unit.
4. The protocol' will include a simple system schematic and layout and for the pilot test.
i
5. The protocol will include a sampling and analysis schedule for the samples that will be
collected from the pilot unlit and sent to City's laboratory for analysis. Engineer will
coordinate with City staff to minimize impact on laboratory routine analytical work.,
6. The protocol will also 'Include, a sampling and analysis schedule for the samples that will
be collected from the pilot unit and analyzed by City staff at the plant.
Task 11111-13-2 Preparation
1. Englineler w,ill coordinate with Trojan Technologies to obtain a rental pilot unit used in the
pilot test. The rental cost will be included in the engineering fee.
Contract No,. Page-3 Ma:rch 14,2 1013
Aim
2. The rental period will be at least thirty-two (312) days, which incl�udes, thirty (30) days of
pilot testing plus one (1) day of startup and one (1) day of'teardlown.
3. Engineer will coordinate with Trojan Technologies for their training and start-up services.
4. City will provide piping, valves, submersible pumps, automatic samplers, lifting
equipment and other components that are required to connect the pilot unit with the
existing plant operation.
5. With assistance of Trojan Technologies, City staff will unpack and in�staili the pilot unit in
accordance with the instruction manual's by Trojan Technologies,.
6. Engineer will assist City during installation.
Task III-B-3 Filter Tests
1. Filter tests will' be performed' prior to the pilot test, to provide basic information used by
Trojan Technologies for selection of filter material.
2. City will' perform filter tests in accordance with the procedure by Trojan Technologies,.
3. Engineer will coordinate with Trojan Technologies to obtain a filter tester column.
4. Engineer will assist City in the filter tests.
5. Engineer will prepare and send test data to 'Trojan Technologies for further desktop
analysis and obtain: recommendations for filter size,from Trojan Technologies.
6. Engineer will coordinate and obtain analytical results from Trojan, Technologies.
Task 1111-B-4 Plliot Test
1. City gill be responsible for running the pilot test in accordance with the protocols.
2. City will provide power for running, the pilot unit.
3. City will be responsible for running the pli'llot test in accordance ance with the protocol.
a. The test will be run for a period of thirty (30) days.
b. City staff will set and, maintain the flow rate to,the pilot unit.
c. City staff will collect saimiplels from, the pilot unit.
d. City will prepare and send samples to City's laboratory for analysis in accordance
withi, the schedule.
e. City staff will perform oin-site analysis, in accordance with the protocol:.
f. City will provide chemical reagents used by the field its for the pilot test samples.
4. With assistance of Trojan Technologies, City staff will be responsible for tearing down
and, placking the plilot unit for shipment back to Trojan Technologies.
5. Engineer will assist City during the pilot test and work with the plant staff to ensure that
the pilot unit, is running properly in accordance with the protocol.
Contract No. Page-4 March 114, 2013
lb
o. Engineer will review the experimental results, communicate with Trojan Technologies
and make recommendation for necessary ad' ustments during the pilot test.
Task III-B-5 Data Summary
1. Engineer will compile experimental data obtained from the pilot test in assistance with
Trojan Technologies.
2. City staffs will assist Engineer in data compilation.
I Engineer will summarize the experimental res,uilts with City staffs. Information will be
delivered in the form of a briefing letter. A detailed evaluation report is considered
additional work.
Task III-B-6 Final Workshop
1., Engineer will provide the City with a half'-day workshop to present the major, findings
from all tests, conducted during the process evaluation and feasibility study.
2. The workshop will be presented after two (2) weeks of completion of the pilot test.
I Engineer'will perform the following work:
a. Organize and prepare presentations,, including slides and brief handouts not to
exceed five (5) pages including descriptions, g�raphlics and tables to summarize pilot
study results.
b. Coordinate with Trojan Technologies for their involvement in the wolrkshlop.
c. Conduct workshop.
Contract No. Page-5 March 1,4,2013
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