HomeMy WebLinkAboutC2009-133 - 4/14/2009 - ApprovedCITY OF CORPUS CHRISTI
PACKERY CHANNEL QUARTERLY MONITORING PROJECT
Amendment No. 3
The City of Corpus Christi, Texas, hereinafter called "City", and the Division of Nearshore Research
(DNR) at Texas A&M University -Corpus Christi, hereinafter called "DNR", hereby agree to amendmentofthe
Contract as approved by Council February 26, 2008 (M2008-052) and administratively amended on March 3,
2008 as follows and by Motion 2008-007 on January 13, 2008:
Section II. Scope of Services, A. Tasks 2-3 is amended to read as follows:
II. SCOPE OF SERVICES A. TASKS:
DNR will continue to conduct the comprehensive study of change in channel depth, shoaling, scour, shoreline
position and beach volume at Packery Channel. The monitoring program will include the collection of bathymetric
data in Packery Channel and the surrounding nearshore, measurement of elevation along the adjacent beach and
bayside channel (shoreline position), and elevation measurements across the Mollie Beattie Coastal Habitat
Community. The monitoring program will include measurement of currentvelocity in the channel that is presently
sponsored by the USACE, Coastal Hydraulics Laboratory.
Specific tasks to be undertaken are set out as follows:
Task 7. Project Management
1-7. Project Management, analysis, reporting, technical support and data archive.
1-2. Aerial Photography
Description: Annual rectified aerial photographs of Packery Channel region including the entire channel from the
GIWW to the Gulf of Mexico (GOM) and including North Padre Island and Mustang Island from the south end of
the seawall to Newport Pass. Purpose: For interpretation of large-scale changes in vegetation, dune line, inter-
tidal regions adjacent to the inland section of the channel as well as along Padre and Mustang Island. In addition
the aerials are appropriate for visuals and explanation aids to residents and laypersons.
Schedule: Annual (August/September) pending weather conditions and one event.
Task 2. Measurement of Morphologic change in PC Channel and along Mustang and Padre Island.
2-1. Beach Profile surveys
Description: The beach profile survey provides information on changes occurring at 18 specified locations from
the Nueces Kleberg County Line to north of Fish Pass. There are historic data for these locations since 1995.
Elevation measurements are collected along transects that initiate landward of the dune or other landward limiting
feature (seawall) and extend offshore up to one mile into the GOM.
Purpose: to document changes in features such as the beach berm, sand bars and dune toe. The data are
applied to calculate volumetric change, the calculation of sand loss or gain on the beach for nourishment projects.
Schedule: One annual survey conducted during August 2009.
2-2. Shoreline Position surveys
Description: Elevation data are collected by RTK GPS along the beach from close to the dune toe to the water
line. The beach is surveyed from south of the Nueces Kleberg County Line to north of Fish Pass.
Purpose: These surveys are an efficient and low-cost way to measure changes in the width of the dry beach.
Within a few days, a large section of the beach can be measured to determine changes in shoreline position from
which regions of beach erosion and accretion can be determined and potential "hot spots' can be identified.
Schedule: Four surveys scheduled to define the peak of seasonal change. Tentative survey schedule: June
2009, September 2009, December 2009, March 2010 and June 2010.
2-3. Surveys of channel depth and morphology (bottom features)
Description: These surveys combine single-beam and multi-beam sonar coverage to provide high resolution of
features more economically.
Purpose: to define features such as shoals (areas of deposition) and scour (areas of erosion) in the channel,
nearshore and around structures. This data may be applied to calculate volumetric change.
Schedule: Four surveys scheduled to define the peak of seasonal change. Tentative survey schedule: June
2009, September 2009, December 2009, March 2010 and June 2010.
2-4. Inland Waterway and Mollie Beattie Focus Study
2009-133 m along transects (survey lines) roughly perpendicular to channel orientation
04/14/09
M2009-091
pAMU-CC itoring\DNRContrectAmd3-2009-2010.doc Page 1 of 3
starting at the location of mean higher high water (MHHW) shoreline position along the south shore and then
extending across the channel to the location of MHHW shoreline position or until a limiting feature (such as
coverage of a raised placement area) is defined. Measure the MHHW shoreline position along the south shore
of Packery Channel from the HWY 361 Bridge to the Relief Channel west of the channel dog leg.
Purpose: These surveys will define inland waterway channel boundary change and determine locations of scour
and shoaling. Comparison of aerial surveys and seasonal survey data will assist in understanding changes along
the channel boundary adjacent to the Mollie Beattie Habitat Community tidal flats.
Schedule: Two surveys scheduled to define the peak of seasonal change. Tentative survey schedule:
September 2009 and March 2010.
2-5. Storm Damage Assessment and TBA
Description: Surveys may be needed after storms or other significant events. Changes in elevation will be
measured along the north shoreline of the Packery Channel basin to include the vegetation line to -5 ft mean sea
level or offshore.
Purpose: to define conditions immediately before or after a storm event without time restrictions associated with
amendments. If storm surveys are not required then funds may be applied to seasonal surveys forthe 2010 year.
Schedule: TBD
Deliverables: DNR will deliver and make available to the City of Corpus Christi:
• ASCII data sets (x,y,z) NAVD88 State Plane south Zone FIPS 4205
• Online posting of current velocity for two new stations
• Email status report (monthly or as updates are available)
• Status Reports (post-survey quarterly reports)
2009-2010 -Amendment 3
The proposal for Year 2009-2010 is attached as Exhibit A-3.
III. FEES AUTHORIZED
The City will pay DNR a fixed fee not to exceed $614,122.00 for providing all services for during the contract term
(12 months). The fee consists of an original contract fee of $241,487.00, a fee for Amendment No. 1 of
$11,020.00 and a fee for Amendment No. 2 of $61,715.00 and a fee for Amendment No. 3 of $299,900.00. This
fee will be full and total compensation for all services provided and expenses incurred in performing the tasks
specified in Section II. Invoices will be submitted to the Director of Engineering Services. Invoices will be
submitted no more frequently than once per month for services rendered. All invoices shall be accompanied by a
cover letter summarizing project status and the tasks undertaken during the time period covered by the invoice.
Invoices will be based on the Task Fee set out by this contract amendment. Invoices will be sequentially
numbered for each project, state the project name (Packery Channel Quarterly Monitoring Project) and City
project number (5228). The letter shall state the number of the current invoice, the total authorized fee, the
amount previously invoiced, and the current amount due. Statements will be based upon percent of project
completed. However, a final payment of $3,500 will be retained until delivery of the final report.
It is mutually acknowledged that fees authorized by the original contract or any prior amendment not invoiced may
be used to defray the costs and expenses of Amendment No. 3 or for such additional tasks as may be directed by
the City Manager or his designee. However, any task or additional service that requires additional funding beyond
that authorized will be evidenced in writing as an amendment to this contract.
Contract Fee
Ori final Contract $241,487.00
Amendment No. 1 $11,020.00
Amendment No. 2 $61,715.00
Amendment Na. 3 299,900.00
Total $614,122.00
The fee for each Task for Amendment No. 3 is estimated to be:
Tasks Fee
1.1 Project Mana ement 41,000
1.2 Aerial Photo rah 18,900
2.1 Beach Profile Studies 28,000
H:\HOME\KEVINS\GEN\PACKERY\Monitoring\DNRContractAmd3-2009-2010.doc Page 2 of 3
2.2 Shoreline Position Studies 21,000
2.3 Suve s 114,000
2.4 Inland Waterwa and Mollie Beattie Focus Stud 37,000
2.5 Storm Dama a Assessment 40,000
$299,900
All other terms and conditions of the February 26, 2008 contract, as amended, between the City and
Consultant shall remain in effect.
CITY OF CORPUS CHRISTI
TEXAS A&M UNIVERSITY -CORPUS
CHRISTI
Oscar Martinez Date
Interim Assistant City Manager
/.~ ~ //_ Gt/-1.... 3-a3-o q
eldre .Williams Date
Principal Investigator
ATTEST: '
BY~ ~
~~ °f Date
City Secretary Date Texas A&M University -Corpus Christi
APPROVED AS TO FORM:
Harvey Knull, Ph.D.
Associate Vice President for Research
Assistant City Attorney Date
RECOMMENDED:
,~~`~~- ~/G o
Pete Anaya, P.E. Date
Director -Engineering Services
~t~o -c~ .
~ eourtca
H:ViOMEVCEVINS\GEN\PACKERYwlonitoring\DNRContractAmd3-2009-2010.doc Page 3 of 3
Packery Channel Quarterly Monitoring
Proposal of Work Effort and Cost Estimate
2009/2010
March 20, 2009
Submitted to:
The City of Corpus Christi
Submitted by:
Deidre D. Williams
Division of Nearshore Research
The Conrad Blucher Institute for Surveying and Science
TAMUCC
Purpose:
The monitoring effort described in this proposal is a continuation of a comprehensive
study of change in channel depth, shoaling, scour, shoreline position and beach volume at
Packery Channel. This study began in 2003 under sponsorship of the U.S. Army Corps
of Engineers, Galveston District and was continued under the sponsorship of the City of
Corpus Christi during 2008/09. The Division of Nearshore Research at Texas A&M
University Corpus Christi continues to lead these investigations. The monitoring
program includes the collection of bathymetric data in Packery Channel and the
surrounding nearshore, measurement of elevation along the adjacent beach and bayside
channel (shoreline position), and elevation measurements across the Mollie Beattie
Coastal Habitat Community. The monitoring program also includes measurement of
current velocity in the channel that is presently sponsored by the USACE, Coastal
Hydraulics Laboratory.
Seasonal survey data collected since August 2006 indicate that sediment transport and
thus changes in depth in Packery Channel is seasonally driven, in large part by
fluctuations in current velocity. For example, sand shoaling is typically observed at the
end of the summer period when the wind is directed out of the SE and currents following
the tidal signal. Scour and channel flushing occur during strong periods of ebb flow,
when the ebb tide is enhanced by frontal systems pushing off the coast from the NW.
Channel scour is observed during the winter months with reduced shoaling typically
observed by December. In addition, analysis of pre- and post-storm data collected as Ike
approached the Texas Coast shows that substantial change in bottom features similar to
that which would occur over a single seasonal period can occur at Packery Channel in
just few days during hurricane surge. Therefore, seasonal and storm monitoring is
proposed to provide timely updates on changes in depth related to shoaling and scour and
to support informed management decisions related to dredging. The analysis of these
data will assist in determining the location and extent of existing regions of channel
shoaling and scour as well as identify areas with a potential for erosion and deposition in
the future. Monitoring will support proactive management of Packery Channel as well as
Exhibit A-3
Pa e 1 of 6
the surrounding nearshore and adjacent beaches along Mustang Island and North Padre
Island.
Task 1. Project Management
1-1. Project Management, analysis, reporting, technical support and data archive.
Cost: $41,000
1-2. Aerial Photography
Description: Annual rectified aerial photographs of Packery Channel region including
the entire channel from the GIWW to the Gulf of Mexico (GOM) and including North
Padre Island and Mustang Island from the south end of the seawall to Newport Pass.
Purpose: For interpretation of large-scale changes in vegetation, dune line, inter-tidal
regions adjacent to the inland section of the channel as well as along Padre and Mustang
Island. In addition the aerials are appropriate for visuals and explanation aids to residents
and laypersons.
Schedule: Annual (August/September) pending weather conditions and one event.
Cost: $18,900
Task 2. Measurement of Morphologic change in PC Channel and along Mustang
and Padre Island.
2-I. Beach Profile surveys
Description: The beach profile survey provides information on changes occurring at
18 specified locations from the Nueces Kleberg County Line to north of Fish Pass. There
are historic data for these locations since 1995. Elevation measurements are collected
along transects that initiate landward of the dune or other landward limiting feature
(seawall) and extend offshore up to one mile into the GOM.
Purpose: to document changes in features such as the beach berm, sand bars and dune
toe. The data are applied to calculate volumetric change, the calculation of sand loss or
gain on the beach for nourishment projects.
Schedule: One annual survey conducted during August 2009.
Cost: $28,000
2-2. Shoreline Position surveys
Description: Elevation data are collected by RTK GPS along the beach from close to the
dune toe to the water line. The beach is surveyed from south of the Nueces Kleberg
County Line to north of Fish Pass.
Purpose: These surveys are an efficient and low-cost way to measure changes in the
width of the dry beach. Within a few days, a large section of the beach can be measured
to determine changes in shoreline position from which regions of beach erosion and
accretion can be determined and potential "hot spots" can be identified.
Schedule: Four surveys scheduled to define the peak of seasonal change. Tentative
survey schedule: June 2009, September 2009, December 2009, March 2010 and June
2010.
Cost: $21,000
Exhibit A-3
Pa e2of6
2-3. Surveys of channel depth and morphology (bottom features)
Description: These surveys combine single-beam and multi-beam sonar coverage to
provide high resolution of features more economically.
Purpose: to define features such as shoals (areas of deposition) and scour (areas of
erosion) in the channel, nearshore and around structures. This data may be applied to
calculate volumetric change.
Schedule: Four surveys scheduled to define the peak of seasonal change. Tentative
survey schedule: June 2009, September 2009, December 2009, March 2010 and June
2010.
Cost: $ 114,000
2-4. Inland Waterway and Mollie Beattie Focus Study
Description: Measure elevation along transects (survey lines) roughly perpendicular to
channel orientation starting at the location of mean higher high water (MHHW) shoreline
position along the south shore and then extending across the channel to the location of
MHHW shoreline position or until a limiting feature (such as coverage of a raised
placement area) is defined. Measure the MHHW shoreline position along the south shore
of Packery Channel from the HWY 361 Bridge to the Relief Channel west of the channel
dog leg.
Purpose: These surveys will define inland waterway channel boundary change and
determine locations of scour and shoaling. Comparison of aerial surveys and seasonal
Exhibit A-3
Pa e3of6
Figure 1. Shoreline position change measured adjacent to Packery Channel (2003-2009).
ass the Mollie
Depth ft, MSL
~.
e 14 28
X12 X26
==10 .24
22
~6 :20
:4 + 18
~2 X16
~,
~.
Post-Ike
Exhibit A-3
Pa e4of6
Beattie Coastal Habitat Community.
Figure 3. Analysis of hydrographic data provides insight into where shoaling and scour are
occurring in the channel and nearshore.
survey data will assist in understanding changes along the channel boundary adjacent to
the Mollie Beattie Habitat Community tidal flats.
Schedule: Two surveys scheduled to define the peak of seasonal change. Tentative
survey schedule: September 2009 and March 2010.
Cost to City: $37,000
2-5. Storm Damage Assessment and TBA
Description: Surveys may be needed after storms or other significant events.
Changes in elevation will be measured along the north shoreline of the Packery Channel
basin to include the vegetation line to -5 ft mean sea level or offshore.
Purpose: to define conditions immediately before or after a storm event without time
restrictions associated with amendments. If storm surveys are not required then funds
may be applied to seasonal surveys for the 2010 year.
Schedule:
Cost: up to $40,000
Total Cost to City of CC: $ 299,900
Deliverables:
ASCII data sets (x,y,z) NAVD88 State Plane south Zone FIPS 4205
Online posting of current velocity for two new stations
Email status report (monthly or as updates are available)
Status Reports (post-survey quarterly reports)
Note: all surveys may be rescheduled based upon study findings or weather and sea
conditions.
Exhibit A-3
Pa e5of6
City of Corpus Christi
Estimated Budget June 2009 to Jun 2010
Personnel
Principal Investigator $ 46,000
Data Analyst/Database Management/support staff $ 14,100
Subtotal Personnel $ 60,100
Benefits $ 17,400
Total Personnel $ 77,500
Transportation-Surveys
Truck/fuel $ 1,600
Total Transportation $ 1,600
Other Project Costs
Materials and Computer (software upgrades $ 4,000
Repair Allowance, Backup/Archive)
Contractual Materials/equipment $ 43,200
Surveying/post processing (contract) $ 129,400
Aerial Photography $ 14,000
Total Other Project Costs $ 190,600
Indirect $ 30,200
Project Total $ 299,900
Exhibit A-3
Pa e(iof6
City of
~_ COI'pUS CITY OF CORPUS CHRISTI
C]1riSt1 DISCLOSURE OF INTERESTS
~.rW
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".
FIRM NAME :...................................................................................................................................................................
STREET :........................................................................... CITY:............................................. ZIP:.........................
FIRM is: 1. Corporation [ ] 2. Partnership [ ] 3 ole Owner [ ] 4. Association [ ]
5. Other ] ..... ............!~. .................
[ ... .
DISCLOSURE QUES~10'f.VS
If additional space is necessary, please use the reverse side of this pa a or ~Etach-s€parate sheet.
1. State the names of each "employee" of the City of Corpus Christi ha ng an "ownership interest" constituting 3% or more of
the ownership in the above named "firm".
Name Job Title an D artment (if known)
2. State the names of each "official" of the City Co hristi having an "ownership' terest" constituting 3% or more of
the ownership in the above named "firm".
Name (~ itle
3. State the names of each "board tuber" of the City of Corpus Chr' i having an "ownership interest" constituting 3% or
more of the ownership in the abov named "firm".
Name Board, Commi ion or Committee
4. State the names of each employee or officer o1
related to the subject of this contract and has :
above named "firm". /
Name
......................................................................................................
'consultant" for the City of Corpus Christi who worked on any matter
"ownership interest" constituting 3% or more of the ownership in the
Consultant
...........................................................................................................
...........................................................................................................
CERTIFICATE
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 a~~ r~~~~] ~h,p,
Certifying Persorr.........AS~oCiat;y ~"::...!:.~~~~?2nt fOr ReSedren Title :..................................................................
Type or Print) 1
Signature of Certifying Person~.~.l~l~.. Date. ~:~..1..."...Q...~ ......................................
Exhibit D
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• 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. "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.
c. "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-emptoyed person, partnership,
corporation, 1omt stock company, joint venture, receivership or trust and entities which, for
purposes of taxation, are treated as non-profit organizations.
d. "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.
e. "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 holding or control established through voting trusts, proxies or
special terms of venture or partnership agreements.
f. "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 D
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