HomeMy WebLinkAboutC2011-372 - 9/20/2011 - NACITY OF CORPUS CHRISTI
AMENDMENT NO. 1
CONTRACT FOR PROFESSIONAL SERVICES
The City of Corpus Christi, Texas hereinafter called "CITY ", and LNV Inc., hereinafter called
"ENGINEER," agree to the following amendment to the Contract for Professional Services for Elevated
Water Storage Tanks City -Wide (Project No. 8651) as authorized and amended by:
Original AIE Ag reement I February 10, 2009 Motion M2009 -032 $ 705,242.00
Exhibit "A " SECTION 1. SCOPE OF SERVICES, PART A. BASIC SERVICES, ITEM NO, 1
PRELIMINARY PHASE shall be amended to include additional Preliminary Design Phase services.
Exhibit "A " SECTION 1. SCOPE OF SERVICES, PART B. ADDITIONAL SERVICES shall be
amended to include additional services as follows:
• ITEM NO. 1 PERMIT PREPARATION
• ITEM NO.2 ROW ACQUISITION SURVEY
• ITEM NO. 4 ENVIRONMENTAL ISSUES
• ITEM NO. 9 SITING EVALUATION AND RECOMMENDATION
• ITEM NO. 10 PRESSURE AND WATER AGE EVALUATION
• ITEM NO. 11 PROPOSED SYSTEM ANALYSIS — ACR FOR ELEVATED STORAGE
Exhibit "A " SECTION 1. S_ COPE OF_SERVICES, PART B. ADDITIONAL_ SE_ RVICES shall be
amended to deduct services as follows:
• ITEM NO. 5 CONSTRUCTION OBSERVATION SERVICES
• ITEM NO. 6 START -UP SERVICES
In the original contract, EXHIBIT "A ", SUMMARY OF FEES shall be modified and is attached as
Amendment No. 1 Exhibit "A" for a revised fee not to exceed $0.00 Zero Dollars and zero cents), for a
total restated fee not to exceed $705,242.00 (Seven Hundred Five Thousand Two Hundred Fortv
Two Dollars and zero cents). -.
All other terms and conditions of February 10, 2009 contract between the City and Consultant will remain
in full force and effect. r,
CITY OF CO% S CHRISTI
��
1 2 V Zcj
Juan Perales Jr., P.E. Date
Assistant City Manager
LNV. I
Dan S. Leffecker, P.L Date
801 Navigation, Suite 300
Corpus Christi, TX 78408
(361) 883 -1984 Office
(361) 883 -1986 Fax
LNV Inc.
2011 -372
09/20/11
51 ELEVATED WATER STORAGE TANKSIAMENDMENT NO. 1LAMENDMENT N0, 1.DOCX
AMEND. NO. 1
Page 1 of 2
INDEXED
RECOMME ED
�f
Pete Anaya, P.E.
Date
Director of Engineering Services
ATTEST
Armando Chapa, City SecretaHJ
APPROVED AS TO FORM
N J
&P 4 4-1/ G"(� 1 --r -
Assistant City Attorney Date
Project Number: 8651
Funding Source: 550950- 4477 - 00000 - 180203
Encumbrance Number: ≪ k, J
EN" FQED
AMEND. NO. 1
Page 2 of 2
K:IENGINEERING DATAEXCHANGEWELMAMWATER18651 ELEVATED WATER STORAGE TANKMAMENDMENT NO. MMENDMENT NO. 1.DOCX
LNV
engineers I architects I contractors
Solutions Today with a
Vision for Tomorrow
August 22, 2011
Mr. Pete Anaya, P. E.
Director of Engineering Services
City of Corpus Christi
Engineering Services
P.O. Box 9277
Corpus Christi, TX 78469 -9277
Re: AMENDMENT NO. 1 TO PROFESSIONAL SjERVICES CONTRACT
ELEVATED WATER STORAGE TANKS CITY -WIDE
(PROJECT NO. 8651)
Dear Mr. Anaya:
In response to City request, we are proposing the following small A/E contract for additional
services associated with the Elevated Water Storage Tanks — City Wide (City Project No. 8651).
Project Description:
The City of Corpus Christi, Texas, hereinafter called "City ", and LNV, Inc. hereinafter called
"Engineer ", agree to the following Contract for Additional Services associated with the above
referenced task. This effort includes providing the City and Texas Commission on
Environmental Quality (TCEQ) with the additional water system analysis and modeling
methodology and assumptions as a result of the July 8, 2011 meeting with TCEQ in an
Engineering Letter Report with the purpose of determining proper elevated storage tank
locations and providing a plan for implementation of the proposed elevated storage. The
configuration of elevated storage determined in this project will also be used to defend the City's
request for Alternative Capacity Requirement (ACR) for the City's Elevated Storage operating
system. These services were requested by the Operating Department.
Scope of Services:
The Scope of Services for this contract is comprised of the following tasks:
A. Basic Services
1, Preliminary Phase
Integration of the TCEQ approved ACR Variance Request Letter Report (detailed
in Section 11.8) including Implementation Plan for four (4) new elevated storage
tanks into the Elevated Storage Tanks City -Wide Engineering Letter Report.
2. Design Phase — No Changes under this Amendment
3. Bid Phase -- No Changes under this Amendment
4. Construction Phase — No Changes under this Amendment
AMEND. NO. 1
EXHIBIT ` "A"
Pa e 1 of 7
B. Additional Services
1. Permitting
Provide Permitting services as detailed in Exhibit "A" of the original contract for
one (1) additional tank site from ACR Implementation Plan.
2. Right -of -Way (ROW) Acquisition Survey
Provide Permitting services as detailed in Exhibit "A" of the original contract for
one (1) additional tank site from ACR Implementation Plan.
3. Topographic Survey — No Changes under this Amendment
4. Environmental Issues
Provide Permitting services as detailed in Exhibit "A" of the original contract for
one (1) additional tank site from ACR Implementation Plan.
5. Construction Observation — No Changes under this Amendment
6. Start -up Services — No Changes under this Amendment
7. Warranty Phase — No Changes under this Amendment
8. Provide SCADA Documentation — No Changes under this Amendment
9. Siting Evaluation and Recommendations
Provide Permitting services as detailed in Exhibit "A" of the original contract for
one (1) additional tank site from ACR Implementation Plan.
10. Pressure and Water Age Evaluation
Perform Water Age Evaluations only as detailed in Exhibit "A" of the original
contract for modified tank siting from the TCEQ approved ACR Implementation
Plan (detailed in 11.6). A water age Evaluation will be performed for each of the
four (4) phases identified in the ACR Implementation Plan.
11. Proposed System Analysis — ACR for Elevated Storage
Provide the additional modeling effort to include the Year 2025 scenario.
This scenario will include all Proposed Elevated Storage.
ii) Provide 2025 demand projections and include the results of the four (4)
conditions requested by TCEQ and described in further detail in Sections
11.1 -11.4 below for the scenario described above.
11.1 Modeling Requirements
i) Apply growth projection analysis to identify the Average Annual
Demand (AAD) for each customer by projecting the current
demands to the year 2025. This will be determined by analyzing
the estimated projections obtained from the Texas Water
Development Board's Regional Water Planning Data. Allocate the
additional demands to the forecasted growth areas indicated by
the 1995 -2008 platting data in the City's Draft Water Transmission
Master Plan.
ii) Calculate the projected maximum daily demand (MDD) and peak
hourly demand (PHD) based upon the trend found above by
applying factors historically determined from water department
records and TCEQ Rules and Regulations to the demands
allocated in the existing model. For the purpose of this ACR,
TCEQ has allowed the City to exclude the demands associated
with STWA, NCWCID#4, and SPMWD since the system does not
rovide pressure maintenance for theses stems.
E O. 1 "A °b
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11.2 Proposed System Simulation at Peak Hour Demand (PHD) during
Normal Operating Conditions
This task addresses the following comment in the April 6, 2009 letter from
TCEQ.
"The design under normal operating conditions must be sized, designed
and capable of providing at least 35 psi at all points in the distribution at
flow rates of at least 1.5 gpm per connection. (if a public water system's
peak hour demand is greater than 1.5 gpm per connection, then the
system must be sized, designed and capable of meeting the actual peak
hour demand.)"
• 1.5 gpm 1 connection = TBD
• ONSWTP System Actual PHD = TBD
i) Based on the projection analysis described in Section 1.1 above,
allocate both demands to the model in two separate scenarios to
satisfy 1.5 gpm /connection from TCEQ Rules and Regulations
§290.45 (g)(5)(A)(i) as well as ONSWTP system actual PHD to
provide consistency in comparing each modeled scenario.
ii) Perform the steady -state hydraulic simulation to confirm that
under normal operating conditions, at least 35 psi is maintained at
all points in the distribution system at the PHD determined above.
All booster pump stations will be in service. This simulation will be
performed for the 2025 scenario for both demand scenarios (2
model runs)
iii) Provide a defense for reasons the ONSWTP's actual Peak Hour
Demand should be used.
iv) Create a color coded exhibit identifying the pressure at every node
in the distribution system for this simulation.
11.3 Proposed System Emergency Power Hydraulic Simulation at
Average Daily Demand (ADD)
This task addresses the following comment in the April 6, 2009 letter from
TCEQ.
"Hydraulic simulation with emergency onsite generated power with
automatic switchover simulated. This should demonstrate that the
system can provide 0.35 gpm per connection or average daily demand,
whichever is greater and provide 0.35 gpm per connection to storage with
operation of only facilities powered by onsite emergency generators. The
onsite emergency power facilities must power sufficient production,
pumping and treatment facilities to provide 0.35 gpm per connection to
storage." `in addition, the emergency hydraulic simulation should include
a surge analysis to determine the high and low transient pressures that
occur during an emergency pump shutdown."
• 0.35 gpm 1 connection = TBD
• 0.35 gpm 1 connection to storage = TBD demand at storage
facilities will be applied to the steady -state model
• ONSWTP System ADD = TBD
• No booster pump stations will be in service.
i) Perform the steady -state hydraulic simulation to confirm that
under emergency power conditions, at least 35 psi is maintained
at all points in the distribution system at the AAD determined for
each scenario along with providing an additional 0.35 gpm per
connection to the System's storage facilities. No booster pump
E D. NO. 1
BIT "A" 3of7
stations will be in service. This simulation will be performed for
the year 2025 scenario
ii) Create a color coded exhibit identifying the pressure at every node
in the distribution system for this simulation.
11.4 Proposed System Power Loss at Peak Hour Demand (PHD)
This task addresses the following comment in the April 6, 2009 letter from
TCEQ.
"A hydraulic analysis for each pressure plane must be conducted under
peak hour customer demands and include the recorded lag time between
loss of normal power and the commencement of emergency power. The
analysis must demonstrate that pressures in each pressure plane will not
be less than 20 psi. Please note whether the emergency power facilities
have automatic switchover controls or are manually started, and note the
corresponding time for System staff to power up the onsite emergency
power equipment and bring necessary equipment online after the loss of
normal power."
• The existing onsite emergency power generators at ONSWTP
have automatic start -up controls and capabilities. The High
Service pumps must be manually re- started once the generators
have ramped up to full speed.
i) Coordinate with Water Department personnel to accurately
determine the maximum realistic duration (lag time) between a
power outage and placing the High Service pumps back in
service. Obtain the Standard Operating Procedure from Water
Department Staff and implement the current procedure into the
controls within this scenario of the water model and provide as an
attachment to the report.
ii) Perform the necessary extended period hydraulic simulation to
show that under a power loss condition, at least 20 psi is
maintained at all points in the existing distribution system at the
PHD determined for each scenario and for the duration required to
place the necessary pumps back in service. The pumps at O.N.
Stevens WTP are assumed to be without power until backup
generators are put into place and pumps are strategically turned
back on. This simulation will be performed for the year 2025
scenario
iii) Provide calculations and assumptions in an organized format
within a report. If possible, create a color coded exhibit identifying
the minimum pressure at every node in the distribution system
during the outage duration.
11.5 Surge Analysis (Existing and Proposed System)
This task addresses the following comment in the April 6, 2009 letter from
TCEQ
"In addition, the emergency hydraulic simulation should include a surge
analysis to determine the high and low transient pressures that occur
during an emergency pump shutdown."
i) Transfer the existing water model into the recommended surge
software and verify that all controls and attributes have been
accurately carried over into the new software.
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Research and implement industry standard internal diameters and
wall thicknesses of each pipe in the model by pipe material and
M 1
nominal diameter.
iii)
Calculate the wave speed for each pipe using the wave speed
calculator in the surge analysis software.
iv)
Perform surge analysis where transient events are usually most
severe (at pumps stations and control valves, in high elevated
areas, at locations of low static pressure, and in remote locations
that are distanced from elevated storage). Conduct Analysis and
setup profiles to determine the routes which will encompass the
critical points in the distribution system. This simulation will be
performed for existing and year 2025 scenarios
V)
Perform the analysis and review results for each profile of typical
events that require transient considerations:
(1)
Pump startup and shutdown (i.e. power outage)
(2)
Valve opening and closing at tanks and in large transmission
mains
(3)
Rapid changes. in demand conditions (i.e. hydrant flushing or LVU)
(4)
Changes in transmission conditions (i.e. main break)
vi)
Review previously prepared engineering report on system surge
by others.
vii)
Provide field verification study including recommendation for
gauge placement, data collection, compiling and organizing data,
and verifying data with modeled results (including any iterations to
refine the model parameters).
viii)
Provide calculations and assumptions in an organized format
within the report. If possible, create a color coded exhibit
identifying the critical locations in the distribution system.
11.6 Proposed
System Implementation Plan
i)
Develop and select available alternatives for phasing the
implementation plan.
ii)
Analyze modeling results to determine the hierarchy of
alternatives selected in Section 11.6 (i) based on hydraulically
critical locations and provide a maximum of 4 phases for
implementation of the elevated storage and associated boundary
modifications.
iii)
Coordinate with City Water and Engineering Departments to
provide a probable construction plan and schedule which includes
milestone dates of the City's plan for increased elevated storage
capacity and pressures.
iv)
Provide plan and schedule in an organized format within the
report.
11.7 Meetings
i)
Prepare for and conduct three (3) project status meetings not to
exceed two (2) hours each with City Water and Engineering Staff
approximately every two weeks after specific project milestones.
ii)
Conduct two (2) meetings with TCEQ's oversight and
development team not to exceed eight (8) hours (including travel
time) each to present model results and submit final revision of the
AC R.
M 1
11.8 Engineering Letter Report
i) Update the variance request letter report, as appropriate for
submission to the TCEQ concerning city -wide Alternative Capacity
Requirements (ACR) for the elevated storage tank volume
component of the ONSWTP system, in response and compliance
with TCEQ letter dated April 6, 2010. The variance letter with
supporting report will include, but not necessarily be limited to, the
following information and sections.
Executive Summary
• Modeling methodology including pump controls,
assumptions, etc.
• Demand discussion on customer types & demand factors
• Model Calibration data
• Modeling scenario descriptions
• Surge protection analysis
• Modeling Results in exhibit and tabular summary format
+ Implementation Plan
ASSUMPTIONS:
As requested by TCEQ, Padre Island pressure zone will be removed from all modeling
scenarios.
Holly Pump Station and associated separation valves will be removed from the
distribution system and all modeling scenarios.
Schedule:
• All work associated with the TCEQ variance request and implementation plan shall be
completed by the Engineer by December 12, 2011.
All work associated with the Preliminary Design, Permitting, Environmental Issues, Site
Evaluations, and Water Age Evaluation for the Elevated Storage Tanks City -Wide
Project (8651) shall be completed by the Engineer 120 calendar days following TCEQ's
approval of the ACR Variance Request. ROW Acquisition Survey shall be concurrent
with the Modified Design Schedule.
Fees:
A. Fee for Additional Services Authorized. The City will pay the Engineer a lump sum fee
not to exceed $ 0.00 for provided services specified in this contract. The fee will be full
and total compensation for services and for all expenses incurred in performing these
services. Engineer will submit monthly statements for basic services rendered. Each
statement will be based on the project percent completion at the time of billing. City will
make prompt monthly payments in response to Engineer's monthly statements.
AMEND. NO. 1
EXHIBIT "A"
Page 6 of 7
B. Summary of fees. See below.
M2009-032 Admin_ Approval
Please feel free to contact me, should you have any questions.
Sincerely,
LNV, INCPE F.jm No. F -366
Dan S.i ndecker, P.E.
E O. 1 "A" f7
ORIGINAL
CONTRACT
AMEND. NO.1
TOTAL
BASIC SERVICES
1
Preliminary Phase
$55,000.00
$18,808.00
$73,808.00
2
Design Phase
160,000.00
0.00
160,000.00
3
Bid Phase
5,000.00
0.00
5,000.00
Construction Phase
4
Tank 1
39,000.00
0.00
39,000.00
Tank 2
39,000.00
0.00
39,000.00
Tank 3
39,000.00
0.00
39,000.00
Subtotal Basic Services
337,000.00
18,808.00
355,808.00
ADDITIONAL SERVICES
1
Permit Preparation
29,998.00
9,904.00
39,902.00
2
ROW Acquisition Survey
18,038.00
6,332.00
24,370.00
3
Topographic Survey
21,024.00
0.00
21,024.00
4
Environmental Issues
23,996.00
8,442.00
32,438.00
Construction Observation Services
5
Tank 1
47,000.00
47,000.00
0.00
Tank 2
47,000.00
47,000.00
0.00
Tank 3
47,000.00
47,000.00
0.00
Start-Up Services
6
Tank 1
5,978.00
3,868.00
2,110.00
Tank 2
5,806.00
3,868.00
1,938.00
Tank 3
5,806.00
3,868.00
1,938.00
Warranty Phase
7
Tank 1
3,147.00
0.00
3,147.00
Tank 2
2,972.00
0.00
2,972.00
Tank 3
2,904.00
0.00
2,904.00
Provide SCADA Documentation
8
Tank 1
2,521.00
0.00
2,521.00
Tank 2
2,521.00
0.00
2,521.00
Tank 3
2,521.00
0.00
2,521.00
9
Siting Evaluation and Recommendation
59,970.00
19,080.00
79,050.00
10
Pressure and Water A e Evaluation
40,040.00
6,016.00
46,056.00
11
Proposed System Analysis - ACR for
Elevated Storage
0.00
84,022.00
84,022,00
Subtotal Additional Services
368,242.00
18,808.00
349,434.00
TOTAL FEE
$705,242.00
$0.00
$705,242.00
M2009-032 Admin_ Approval
Please feel free to contact me, should you have any questions.
Sincerely,
LNV, INCPE F.jm No. F -366
Dan S.i ndecker, P.E.
E O. 1 "A" f7
6 ' yi,� SUPPLIER NUMBER
�1 TO BE ASSIGNED BY
PURCHASING DIVISION
%W0%WW#M"
City of CITY OF CORPUS CHRISTI
Corpus DISCLOSURE OF INTEREST
Christi
City of Corpus Christi Ordinance 17112, as amended, requires all persons or firms seeking to do
business with the City to provide the following information. Every question must be answered.
If the question is not applicable, answer with `NA ". See reverse side for Filing Requirements,
Certifications and definitions.
COMPANY NAME: LNV Engineering
P. O. BOX:
STREET ADDRESS: 801 Navigation, Suite 300 CITY:
FIRM IS: 1. Corporation X 2. Partnership ❑
4. Association ❑ 5. Other
Corpus Christi ZIP: 78408
3. Sole Owner ❑
DISCLOSURE QUESTIONS
If additional space is necessar please use the reverse side of this page or attach separate shcet.
1. State the names of each `employee" of the City of Corpus Christi having an "ownership
interest" constituting 3% or more of the ownership in the above named "firm.'
Name Job Title and City Department {if known}
NIA
2. State the names of each "official" of the City of Corpus Christi having an "ownership interest"
constituting 3% or more of the ownership in the above named "firm."
Name Title
NIA
3. State the names of each "board member" of the City of Corpus Christi having an "ownership
interest" constituting 3% or more of the ownership in the above named "firm."
Name Board, Commission or Committee
Dan S. Leyendecker Marina Advisory Board
4. State the names of each employee or officer of a "consultant" for the City of Corpus Christi
who worked on any matter related to the subject of this contract and has an ownership
interest" constituting 3% or more of the ownership in the above named "firm."
Name Consultant
NIA
EXHIBIT "B"
Page 1 of 2
FILING REQUIREMENTS
If a person who requests official action on a matter knows that the requested action will confer an
economic benefit on any City official or employee that is distinguishable from the effect that the
action will have on members of the . public in general or a substantial segment thereof, you shall
disclose that fact in a signed writing to the City official, employee or body that has been
requested to act in the matter, unless the interest of the City official or employee in the matter is
apparent. The disclosure shall also be made in a signed writing filed with the City Secretary.
[Ethics Ordinance Section 2 -349 (d)]
CERTIFICATION
I certify that all information provided is true and correct as of the date of this statement, that I
have not knowingly withheld disclosure of any information requested; and that supplemental
statements will be promptly submitted to the City of Corpus Christi, Texas as changes occur.
Certifying Person: Dan S. Leyendecker, E.,E. Title: President
(Type or Print)
S>tgnatureof Certifying:: Date;_
DEFINITIONS
a. `Board member." A member of any board, commission, or committee appointed by the
City Council of the City of Corpus Christi, Texas.
b. "Economic benefit ". An action that is likely to affect an economic interest if it is likely to
have an effect on that interest that is distinguishable from its effect on members of the public
in general or a substantial segment thereof.
c. "Employee." Any person employed by the City of Corpus Christi, Texas either on a full or
part -time basis, but not as an independent contractor.
d. "Firm." Any entity operated for economic gain, whether professional, industrial or
commercial, and whether established to produce or deal with a product or service, including
but not limited to, entities operated in the form of sole proprietorship, as self - employed
person, partnership, corporation, joint stock company, joint venture, receivership or trust, and
entities which for purposes of taxation are treated as non - profit organizations.
e. "Official." The Mayor, members of the City Council, City Manager, Deputy City
Manager, Assistant City Managers, Department and Division Heads, and Municipal Court
Judges of the City of Corpus Christi, Texas.
f. "Ownership Interest." Legal or equitable interest, whether actually or constructively held,
in a firm, including when such interest is held through an agent, trust, estate, or holding
entity. "Constructively held" refers to holdings or control established through voting trusts,
proxies, or special terms of venture or partnership agreements."
g. "Consultant." Any person or firm, such as engineers and architects, hired by the City of
Corpus Christi for the purpose of professional consultation and recommendation.
EXHIBIT `B"
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