HomeMy WebLinkAboutC2013-139 - 4/30/2013 - Approved't a
CITY OF CORPUS CHRISTI
AMENDMENT NO. 1
CONTRACT FOR PROFESSIONAL SERVICES
The City of Corpus Christi, Texas hereinafter called "City ", and SCS FIELD SERVICES hereinafter called
"Engineer', agree to the following amendments to the Contract for Engineering Services for J. C. Elliott
Landfill Gas Collection and Control System Repairs (Project No. E12108) as authorized and
administratively amended by:
Original Contract I October 9, 2012 1 Ordinance No. 029645 1 $100,400.00
In the Original Contract, Exhibit "A ", Section 2. Scope of Services, shall be amended to include Three Task
as follows:
1. Repair Leak in GCCS in the vicinity of Sump 5
2. Wellhead Assessment and Replacement Activities
3. Sump 3 Replacement
In the Original Contract, Exhibit "A ", Section 5. Fees, Fee Estimate shall be modified and is attached as
Amend No. 1 Exhibit "A" for a fee not to exceed $77,000.00 (Seventy Seven Thousand Dollars and Zero
Cents), for a total restated fee not to exceed $177,400.00 (One Hundred Seventv Seven Thousand Four
Hundred Dollars and Zero Cents). Monthly invoices will be submitted in accordance with Exhibit "B ".
All other terms and conditions of the October 9, 2012 contract between the City and Engineer, and of any
amendments to that contract, which are not specifically addressed herein shall remain in full force and
effect.
CITY OF CORPUS CHRISTI
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Oscar R. Martinez Dbte
Assistant City Manager
RECOMMENDED
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Daniel Biles, P. E., Date
Dir for of Engineering Services
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Operating Department I 1 Date
SCS Field Services
SERVICES
David Vezzacappa, P.E. Date
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1901 Central Drive, Suite 550
Bedford, TX 76021 - 5872
(361) 571 -2288 Office
(361) 571 -2188 Fax
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IT AIL
201.3 -139
4130113
M2013 -ISO AMEND. NO.1
Page 1 of 2
NASTE\E12108 JC ELLIOTT LANDFILL GAS COLLECTTION & CONTROL SYSTEM REPAIRSIAMENDMENT NO 15AGREEMENT.DOC
INDEXED
S '
APPROVED AS-T-0
(H 21 1.13
City A ey Date
Office of Management
and Budget
ATTEST
Armando Chapa, City Secretary
Project Number: E12108
Funding Source: 550950 -3362- 00000- E12108
Fund Name: Sanitary Landfill CIP 2006
Encumbrance Number:
ENTERED
MAR 15 2013
CONTRACT MANAGERS
ffAM ND . NO. 4
ge 2 of 2
K: ENGINEERING DATAEXCHANGE%ANGIEMISOLID WASTE5E12108 JC ELLIOTT LANDFILL GAS COLLECTTION & CONTROL SYSTEM REPAIWAMENDMENT NO 1LAGREEMENT.DOC
C
i
Landfill Gas Collection and Control
System Repairs
J.C. Elliott Landfill
Presented To:
CITY OF CORPUS CHRISTI
Department of Engineering Services
City of Corpus Christi
1201 Leopard Street
Corpus Christi, Texas 78401
Presented By-.
SCS FIELD SERVICES
1901 Central Drive
Suite 550
Bedford, Texas 76021
March 12, 2013
Offices Nationwide
www.scsongineers.com
AMD. NO. 7
EXHIBIT "A"
Pa e 1 of 6
• [ i
J.C. Elliott Landfill
I SCS FIELD SERVICES
Table of Contents
Section
Page
1 INTRODUCTION ...................................................................................................... ............................... 1
2 SCOPE OF SERVICES ............................................................................................. ............................... 1
Task 1 — Repair Leak in GCCS in the Vicinity of Sump 5 ................................. ..............................1
Task 2 — Wellhead Assessment and Replacement Activities ............................ ..............................2
Task3 — Sump 3 Replacement ............................................................................... ..............................2
3 SCHEDULE .................................................................................................:.............. ............................... 3
4 ASSUMPTIONS AND CONDITIONS .................................................................... ............................... 3
5 COST ESTIMATE ...................................................................................................... ............................... 4
dCONCLUSION .......................................................................................................... ..............................4
AMD. NO. 1
EXHIBIT "A"
Page 2 of 6
J.C. Elliott Landfill
INTRODUCTION
With the City of Corpus Christi (City) moving forward with a beneficial landfill gas project, and
to avoid problems that can arise due to oxygen being introduced into the waste, SCS Engineers
(SCS) recommended that a detailed assessment be performed of the wellfield to determine where
damaged wells, header and/or piping exists. This Landfill Gas Collection and Control System
(GCCS) Assessment was completed by SCS and presented to the City in June 2012. As a result
of that report, several GCCS corrective actions were approved in October 2012 and implemented
by SCS Field Services (SCS -FS) in late 2012 and early 2013. Upon completion of this first
phase of corrective actions, several new issues impacting the operation of the GCCS were
identified and suggested for repair as part of the post - construction report. The proposal is being
presented to satisfy those newly identified issues.
The scope of services provided in the next section has been divided into three (3) tasks to
accomplish the next phase of recommended GCCS repairs for the J.0 Elliott Landfill (Site). The
time - and - material estimated costs for each task found in the following scope of work are located
in a table which can be found in the Cost section of this document.
2 SCOPE OF SERVICES
SCS -FS is proposing to implement the corrective actions as described below to address the
deficiencies discovered in the Site's GCCS after completion of Phase I construction activities
associated with the 2012 corrective actions proposal.
TASK i — REPAIR LEAK IN GCCS IN THE VICINITY OF SUMP 5
After repairing Sump 5 and returning vacuum to the southwest section of the 12 -inch header, a
leak was detected in this area which resulted in the introduction of air into the system. This leak
was previously undetectable during the initial site investigations since that portion of the header
had been temporarily decommissioned due to the issues with Sump 5. Since the leak was a
major contributor to high oxygen in the gas stream, SCS -FS temporarily isolated this section of
the GCCS until an investigation of the problem could be conducted.
In February of 2013, an SCS -FS technician added several monitoring ports to the southwest
header and used vacuum manipulation techniques in conjunction with GEM readings to further
isolate the source of the atmospheric intrusion along this section of header. Using these
techniques, the location of the leak was traced to a section of header between Sump 5 and a main
header valve located in the vicinity of EW -26.
SCS -FS is now proposing the following course of action to repair the source of this atmospheric
intrusion so that this section of header can be restored to use:
• Excavation of the 12 -inch header at selected intervals for installation of monitoring ports
between Sump 5 and the isolation valve to further isolate leak.
AMID. NO. 1
EXHIBIT "A"
Pane 3 of 6
J.C. Elliott Landfill
SCS FIELD SERVICES
• Utilization of a pipe inspection camera to visually inspect the suspect section of header
and determine the exact location required for excavation.
• Excavate the damaged section of header identified during the video inspection and make
the repairs necessary to correct the issues.
SCS -FS is estimating between one (1) and two (2) days to further isolate the section of header
requiring repairs, with the actual time required to repair the leak taking between two (2) to four
(4) days depending on the extent of the damage encountered.
In Addition, a $10,000 accrual for cap repairs that could possibly be required has been added to
the cost estimate for this task. It is hoped that no such repairs will be needed, or that they will be
limited in scope. However, until the actual location of the problem and its relationship to the cap
are positively known, we cannot be sure of the extent of the repairs or ultimate cost that may be
required. This ultimate fee will also include SCS observation of all repairs and a short report on
the repairs for your files.
TASK 2 — WELLHEAD ASSESSMENT AND REPLACEMENT
ACTIVITIES
During the post - construction tuning performed by SCS -]FS, problems with many of the wellheads
were detected which affected their ability to accurately control the applied vacuum to the well.
These issues were basically related to stuck gate valves or gate valves that could not be operated
through their full range of motion. It is estimated that approximately 17 to 20 wellheads have
inoperable gate valves and will require replacement of the entire wellhead in order to regain
tuning capabilities. Currently many of these wellhead locations are contributing to the higher
than normal levels of oxygen that are found in the gas stream. This is occurring because the
supplied vacuum cannot be effectively controlled to eliminate the over - pulling of the offending
wells.
SCS -FS is proposing to have a qualified technician perform both a visual and operational
inspection of each wellhead at the site. During this inspection, the individual wellheads will be
inspected to verify valve operation and to notate any other deficiencies affecting LFG collection.
After completion of the assessment, an accurate count of wellheads requiring replacement will be
made utilizing the technician's notes. The required number of well heads will then be ordered
for each location identified and a technician can return to the Site to perform the selected
replacements. At this time any other deficiencies noted during the inspection can be addressed
as well.
For the purposes of this proposal, SCS -FS is assuming that a maximum of 20 Landtec wellheads
will require replacement. A budget maximum of $500 for sundry wellhead replacement parts is
also being assumed for correcting any other deficiencies noted during the wellhead inspection.
TASK 3 — SUMP 3 REPLACEMENT
During the 2012 J.C. Elliott Phase I Corrective Actions project Sump 3 was found to be non-
operational and causing a severe vacuum restriction on the west side of the landfill. At that time,
2
AMD. NO. 1
EXHIBIT "A"
Page4of6
r �
J.C. Elliott Londf ill
SCS -FS proceeded with the installation of a new AP4 pump at this location and agitated the
sediment which had collected in the sump bottom. The combination of these two activities
improved the operational effectiveness of Sump 3 and has temporarily returned it to partial
operation. It is believed however, that over time this sump will lose its ability to remove
condensate from the system resulting in a complete vacuum restriction.
Due to the inherent problems with the current Sump 3 design, SCS -FS is proposing a complete
replacement of this sump rather than repair of the existing components. To complete this task,
SCS -FS will excavate and remove the existing sump and replace it with a more efficient field
fabricated stacked tee design. The new sump can then be connected to the existing 16 -inch
header utilizing electro - fusion couplers and the pump re- installed. This solution was previously
used to correct an identical problem with Sump 1 encountered during the recent Phase I
Construction project.
In addition, a $9,000 accrual has been added to this task to cover the necessary repairs that will
be required for the cap in the immediate vicinity of Sump 3 after the above work is completed.
However, SCS -FS cannot be sure of the full extent of the repairs that will be needed or ultimate
cost that may be required. This cap repair fee will also include SCS observation of all repairs
and a short report on the repairs for your files.
3 SCHEDULE
SCS is prepared to commence the scope of services described in this proposal within six weeks
of receiving authorization to proceed from the City. Assuming acceptance of all 3 tasks, the
entire project should be completed within 3 weeks of the commencement of on -site activities.
4 ASSUMPTIONS AND CONDITIONS
In preparing this proposal, SCS offers the following assumptions and conditions:
1. The City will provide and deliver to the site sand from their stockpiles for use by SCS -FS
in the bedding and re- grading activities for the 12 -inch header and sump 3 task.
2. Any waste generated from excavation activities will be placed back into the
excavation/trench and recovered during backfill activities.
3. No regularly scheduled meetings between the City and SCS have been accounted for in
this scope of services. However, it is anticipated that SCS technicians may meet with City
personnel on site when performing services.
4. SCS -FS takes no responsibility for the overall quality of the LFG collected from the LFG
collection systems in regards to trace components.
5. The City will coordinate any approvals required from TCEQ relating to cap disturbance
during SCS -FS' work.
AMD. NO. 1
EXHIBIT "A"
Pa4e 5 of 6
J.C. Elliott Landfill
SCS FIELD SERVICES
6. This proposal is valid for 60 days from the date of this submittal. This proposal is
confidential and for City's use only. if awarded the work, this proposal will became part
of a mutually acceptable contract or purchase order.
5 COST ESTIMATE
SCS proposes to perform the above described tasks on a time - and — material basis for the
estimated amounts shown in the table below. These estimates include costs for labor, project
administration and management, equipment, materials, travel and per -diem assumed necessary
for the completion of the task as described in the scope of work.
Task
Number
Type of Service
Duration
(days)
Estimated
Cost
1
Repair Leak in GCCS in the Vicinity of Sump 5
7
$33,000
2
Wellhead Assessment and Replacement Activities
4
$18,000
3
Sump 3 Replacement
5
$26,000
Total
$77,000
6 CONCLUSION
SCS -FS appreciates the opportunity to present this proposal to the City of Corpus Christi, J.C.
Elliott Landfill. Please feel free to contact Jason Lewallen at 817 -680 -2264 if you have any
questions regarding this proposal.
4
AMD. NO. 1
EXHIBIT "A"
Page 6 of 6
COMPLETE PROJECT NAME
Project No. E11088
Invoice No. 12345
Invoice Date:
� x 3
! 0
i W J
Basic Services:
Preliminary Phase
Design Phase
Bid Phase
Report Phase
Construction Phase
Subtotal Basic Services
Additional Services:
Permitting
Warranty Phase
Inspection
Platting Survey
Reporting
O & M Manuals
SCADA
Subtotal Additional Services
Summary of Fees
Basic Services Fees
Additional Services Fees
Total of Fees
Total Amount Previous Total Percent
Contract Amd No. 1 Amd No. 2 Contract Invoiced Invoice Invoice Complete
$15,117
$0
$0
$15,117
$0
$1,000
$1,000
7%
20,818
0
0
20,818
1,000
500
1,500
7%
0
0
0
0
0
0
0
n/a
14,166
0
0
14,166
0
0
0
n/a
0%
0 0 0 0 0 0 0
$50,101
$0
$0
$50,101
$750
$1,500
$2,500
5%
$0
$0
$0
$0
$0
$0
$0
n/a
0
0
0
0
0
0
0
n/a
9,011
0
0
9,011
0
0
0
0%
29,090
0
0
29,090
0
0
0
0%
1,294
0
0
1,294
0
0
0
0%
TBD
TBD
TBD
TBD
TBD
TBD
0
0%
TBD
TBD
TBD
TBD
TBD
TBD
TBD
0%
$39,395
$0
$0
$39,395
$0
$0
$0
0%
$50,101
$0
$0
$50,101
$750
$1,500
$2,500
5%
39,395
0
0
39,395
0
0
0
0%
h $89,496
$0
$0
$89,496
$750
$1,500
$2,500
3%
SUPPLIER NUMBER
To BE ASSIGNED BY CrrY --
PURCHASING DIVISION
City of CITY OF CORPUS CHRISTI
Corpus DISCLOSURE OF INTEREST
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. Everyauestion must be answered.
If the question is not applicable, answer with `NA ". See reverse side for Filing Requirements,
Certifications and definitions.
COMPANY NAME: SCS Engineers
P. O. BOX:
STREET ADDRESS: 1901 Central Drive Suite 550 CITY: Bedford ZIP:
FIRM IS: 1. Corporation 2. Partnership 3. Sole Owner ❑
a. Association S. Other B
DISCLOSURE QUESTIONS
If additional space is necessary, please use the reverse side of this page or attach separate sheet.
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
�S Department (if known)
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."
A Name Title
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
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 `arm"
Name Consultant
ft
76021 -5872
r
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 fled with the City Secretary.
[Ethics Ordinance Section 2- (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: . Title:
��'����r['�jy'
(Tyne or ns)
Signature of Certifying Date: �� {{
Person: -
D FINI IONS
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.