Sample Projects

1. _____________________________________________________________
Ahmad Mousa 1/5
LIST OF SELECTED PROJECTS
I. Tetra Tech
[1] Interstate I-12 widening design/build project (Amite River Bridge to Juban Road - WB
and Pete's Highway to Juban Road - EB).
Tetra Tech serves as part of the Shaw Group D/B team that has been short-listed for award of this
project. This project involves the design of additional lanes and overlays for the existing pavement.
Responsibilities include:
 Traffic analysis
 Design of flexible sections
 Pavement rehabilitation
 Geotechnical evaluation
 Drainage design
 Estimation of pavement life cycle
[2] Interstate I-10 widening design/build project (Siegen Lane to Highland Road):
Tetra Tech serves as part of a team that has been short-listed for award of this project. This project
involves the design of additional lanes and overlays for the existing pavement. Responsibilities include:
 Traffic analysis
 Design of pavement sections (rigid and flexible),
 Drainage design
 Estimation of pavement life cycle
[3] IHNC – Lake Borgne Barrier GIWW to MRGO.
Tetra Tech provided geotechnical analyses for the Bayou Bievenue Sector Gate, advanced measures at
Bayou Bienvenue and tie-in T-walls at the Gulf Intracoastal Waterway (GIWW) and the Mississippi
River Gulf Outlet (MRGO) levees. Responsibilities include:
 Global slope stability
 Estimation of Pile capacities
 Settlements analysis
 Seepage analysis
 Temporary retaining structures
 Specialized analyses include Plaxis, Slope/W and UTexas4
[4] Larose to Golden Meadow Hurricane Protection Project, Preparation of Preliminary
Designs - Contract Task Order No. 5, Lafourche Parish, Louisiana.
Tetra Tech’s work consists of performing 2 soil borings at each station (up to 150 feet in depth), securing
and transporting samples, processing samples, performing laboratory testing, and performing various
geotechnical engineering analyses. All work is being conducted in accordance with the current US Army
Corp of Engineers (USACE) criteria. Technical review and quality control for Geotechnical Laboratory.
Responsibilities include preparation of the geotechnical laboratory for the accreditation process
overseen by (USACE).
[5] Evaluation study on the use of organic matter in levees for the US Army Corp of
Engineers (USACE).
The U.S. Army Corps of Engineers, New Orleans District is in the midst of an unprecedented search for
clay material to rebuild and reinforce the Greater New Orleans Hurricane and Storm Damage Risk
Reduction System (HSDRRS) in southeast Louisiana. The total borrow requirement to complete the
construction of HSDRRS hurricane protection levees and floodwalls is 93 Million CY. Typically material
having an organic content exceeding 9% by weight is not accepted. This special study revisited this
criteria.
[6] North Lafourche Levee District, Commotion Canal Improvements, Raceland, LA.
[7] Proposed Deer Island Pass Realignment, St. Mary Parish, LA .

2. _____________________________________________________________
Ahmad Mousa 2/5
[8] Proposed Breakwater, East Jefferson Levee District, South Shore of Lake Pontchartrain,
Jefferson Parish, LA.
[9] Proposed Breakwater, Point Chevreuil Shoreline Protection, St. Mary Parish, LA.
[10] Lower Lafitte Shoreline and Erosion Protection, Jefferson Parish, LA.
Projects [6] to [10] include:
 Geotechnical investigation
 Settlement and stability analyses
 Bearing capacity calculations, breakwater
 Estimation of borrow area delineation, dredging (including equipment and methods)
 Marsh creation recommendations and technical report writing
II. URS Corporation
[11] Senior Engineer, DWR Urban Levee Evaluation Project, Sutter and Butte Counties, CA,
T&M, Department of Water Resources (DWR).
Responsibilities include:
 Evaluate the locations and the specifics of the proposed supplemental field explorations
 Design a laboratory program
 Coordinating with laboratory subcontractors
 Tracking geotechnical laboratory testing of soil samples used to evaluate the levees
 Proposing strength parameters and hydraulic conductivity for geotechnical evaluation
[12] Engineer, San Joaquin River System Levee Repair prioritization; San Joaquin County,
CA; Department of Water Resources (DWR).
Responsibilities include:
 Site reconnaissance and surveying of cross sections
 Geotechnical field evaluation of levee condition
 Writing geotechnical memorandums
 Developing site prioritization criteria
 Developing fragility curves for pre-repaired and post-repaired levee cross sections
[13] Field Investigation Manager, Urban Levee Geotechnical Evaluations Contract
4600007418, San Joaquin Area Flood Control Agency (SJAFCA); San Joaquin County,
CA; Department of Water Resources (DWR).
DWR has identified approximately 72 miles of levees that protect the urban communities of San
Joaquin County. These areas were be investigated by URS and GEI. URS provided overall coordination
and management of the task, as well as the subsurface investigation of approximately 27 miles of levee
on the Calaveras River, Stockton Diverting Canal, and Mormon Slough (Calaveras River System). GEI
investigated approximately 45 miles of levee on Bear Creek and Paddy Creek (Bear Creek System).
Responsibilities include:
 Preparation of Subsurface Investigation Plan
 Preparation of laboratory program and coordination with laboratory
 Coordinating with counterparts and providing feedback on laboratory program
 Coordination with DWR representatives
 Coordinating with field representatives and loggers, CADD and GIS analysts, and gINT data
specialists
 Preparation of presentations for ITR and DWR
[14] Engineer, Review of Erosion Toolbox, Oakland, CA US Army Corps of Engineers.
Responsibilities include:
 Providing a technical feedback on pitfalls and shortcomings of the current version of the erosion
toolbox
 Testing the program with different cases and materials
 Suggesting areas of improvement
 Supporting suggestions with examples and references

3. _____________________________________________________________
Ahmad Mousa 3/5
III. CH2M Hill
[15] South Fork Willow Creek Detention Basin (Colusa); The Colusa Basin Drainage District
of Colusa County; Glenn County, California. Staff geotechnical engineer and field safety
coordinator.
Drainage District recommended construction of a detention basin to reduce flooding in the Willows
area. The detention basin consists of an earth fill dam to be constructed with a height of about 80 feet
above the channel bottom on the South Fork of Willow Creek and an ungated outlet with two 36 inch
diameter pipes. The peak inflow is 9,120 cfs (1,000-year flood). The outlet system is designed to release
half of the maximum reservoir capacity in seven days and not retain water longer than 30 days. A
spillway should allow discharge of flows greater than the 1,000-year event into the creek beyond the
dam. Responsibilities include:
 Staking boreholes and test pits using a hand-held GPS unit
 Site utility clearance
 Logging soil borings, rock cores and test pits
 Performing field permeability test
 Surveying of drilled boreholes and excavated test pits using a hand-held GPS unit
 Measuring water levels in the monitoring wells
 Calculation of rock permeability from packer test results
 Housekeeping and book keeping
 Providing weekly progress and performance reports and reviewing invoices
 Comparing CH2M HILL records with the subcontractor invoices
 Requesting quotes from subcontractors and working with contracting department to prepare a
price list and final contracts,
 Reviewing of laboratory test results
[16] PCWA Werner Road Storage Tank Preliminary Design; Placer County Water Agency
(PCWA); Placer County, California. Staff geotechnical engineer.
The proposed PCWA Werner Water Tank project includes the following elements: A twin 5-million
gallon prestressed concrete tanks, 180 feet in diameter and 21 feet in height, a 20ft by 75ft prepackaged
pump station building with a below-grade well extending approximately 15 feet below grade, a 40 ft by
60ft inlet control structure building with a concrete slab on grade and concrete masonry unit (CMU)
walls. Responsibilities include:
 Conducting slope stability using Slide software
 Estimating bearing capacity
 Performing settlement analysis
 Performing probabilistic seismic analysis
 Writing the Geotechnical Preliminary Design Report
[17] Bickford Tank and Pipeline Pre-Design; Placer County Water Agency (PCWA), Bickford
Ranch in Placer County, California. Staff geotechnical engineer.
The project includes a 8-million gallon, 180-foot diameter water storage tank and associated
transmission pipeline for the Placer County Water Agency. Responsibilities include:
 Performing slope stability using Slide software
 Estimating bearing capacity
 Performing settlement analysis
 Creation of conceptual cross sections and interpretation of soil/rock profile from geophysical
analysis probabilistic seismic analysis
 Writing the Geotechnical Preliminary Design Report
The project team was awarded the Phase I Civil/Federal Engineering (CFE) Project Team
Recognition Award.
[18] Stockton Tank Farm Terminal Expansion; Valero LP; Navy Drive, Stockton, California.
Staff geotechnical engineer and field safety coordinator.
Valero LP is considering expansion of their storage tanks to increase the capacity of gasoline, diesel/fuel
oil, and possibly ethanol. Three additional tanks are proposed: two 86-foot diameter by 48 feet in height
and one 115-foot diameter and 48 feet in height. Responsibilities include:
 Site utility clearance
 Logging boreholes
 Coordinating with county inspectors to check the methods and quality of borehole grouting
 Data entry using gINT software

4. _____________________________________________________________
Ahmad Mousa 4/5
 Preparation of laboratory requests
 Writing Geotechnical Data Report (GDR)
 Estimation of bearing capacity
 Conducting settlement analysis and providing recommendations for reducing settlement
 Conducting probabilistic seismic analysis(GIR)
 Assisting with preparing Geotechnical Interpretive Report
 Coordinating with CADD group and assembly of GDR and GIR with Reprographics for final review
[19] The Bradshaw Interceptor Section 6B Project; the Sacramento Regional County
Sanitation District (SRCSD or District); Bradshaw/Jackson Junction, Sacramento,
California. Staff geotechnical engineer and field safety coordinator.
The project primarily consists of 108-inch reinforced concrete pipe (RCP). Two tunneled crossings were
designed as part of the Project: the 130-foot Jackson Road Crossing and the 254-foot Morrison Creek
Crossing. Responsibilities include:
 Field visits to evaluate the existing soil conditions at the pipeline level
 Collecting soil samples for sieve analysis
 Performing in-situ density test
 Investigating the reasons for partial failure and sloughing of earth slopes during construction
 Studying the possibility of settlement under the pipeline due to loose or uncompacted bearing soil
layer
[20]Byron Bethany Irrigation District (BBID): 20 MGD Pump Station 1-S Expansion Design;
Byron, California. Staff geotechnical engineer and field safety coordinator.
The BBID Headquarters Project includes the following main elements: single-story steel panel office
building, new paved parking areas, single-story steel panel workshop, raised concrete foundation with
concrete floor slab, single-story steel panel parking shade structure with open sides, raised concrete
foundation with concrete floor slab, stormwater retention pond. Responsibilities include:
 Staking boreholes and test pits using a hand-held GPS unit
 Underground utility clearance
 Coordinating with county inspectors to check the method and quality of borehole grouting
 Logging boreholes and test pits
 Log data entry using gINT software
[21] Wheatland Waste Water Treatment Plant Expansion; City of Wheatland, California. Staff
geotechnical engineer and field safety coordinator.
The Wheatland Wastewater Treatment Plant includes the following main elements: recycled rater tank,
approximately 130 feet in diameter by 33 feet in height, bioreactor basin, approximately 130 feet in
diameter, MBR equipment building, steel frame building with concrete masonry unit (CMU) walls, two
interior tanks bear on the concrete floor slab, headworks/screening building: a combination steel frame
building with concrete masonry unit (CMU) walls, odor control facility, administration building, steel
frame building with CMU walls, new paved parking areas, temporary stormwater retention pond, and
permanent stormwater basin. Responsibilities include:
 Staking boreholes using a hand-held GPS unit
 Underground utility clearance
 Coordinating with county inspectors to check the method and quality of borehole grouting
 Logging boreholes
 Supervision of construction of monitoring wells
 Log data entry using gINT software
 Preparation of laboratory requests
[22]Santa Rosa Seasonal Storage IRWP Project; City of Santa Rosa; Santa Rosa, California.
Staff geotechnical engineer and field safety coordinator.
The City of Santa Rosa adopted the Incremental Recycled Water Program (IRWP) in March 2004. The
IRWP Master Plan identifies Urban Reuse as a project for implementation. Urban Reuse may occur
within the cities of Santa Rosa, Rohnert Park or Cotati or at the Santa Rosa Golf and Country Club. The
scope of services provides for Consultant’s work associated with the IRWP Santa Rosa Urban Reuse
Project and the IRWP Seasonal Storage Project including: Feasibility Study of the Santa Rosa Urban
Reuse Project, Predesign of the 1,000-Million Gallon per Year (MGY) Santa Rosa Urban Reuse Project
(Santa Rosa Urban Reuse Project), reconnaissance and Conceptual Design of the 400 Million Gallon
(MG) Phase 1 Seasonal Storage Expansion Project (IRWP Seasonal Storage Project). Responsibilities
include:

5. _____________________________________________________________
Ahmad Mousa 5/5
 Country permitting
 Working with client for site access and logistics
 Logging boreholes
 Supervise construction of monitoring wells
 Data entry using gINT software
 Coordinating with contracting department at CH2M HILL and subcontractors
 Reviewing subcontractors invoices
 Preparation of laboratory requests and budget
I received a CFE award for the outstanding performance
[23]Altamont Water Treatment Plant and Pipeline; City of Livermore, California. Staff
geotechnical engineer.
Responsibilities include:
 Preparing a profile of drilled boreholes using CADD
 Preparing cross sections of the proposed pipeline under an existing concrete pavement and
underlying soil layers based on the specifications provided by: CH2M Hill, City of Livermore, and
Altamont Country
 Contacting saw cutting contractors and manufacturers for specs and availability of rockwheels or
concrete saw cutting equipment to cut the abandoned concrete pavement under the exiting road
[24]Big Bear Sedimentation Ponds. Staff engineer for civil engineering conceptual design.
Responsibilities include:
 Preparation of cross sections of embankments (CADD)
 Estimation of earth work quantities and geotextile used
[25] Upper Williams Creek Reservoir; Colorado Springs, El Paso County, Colorado. Staff
geotechnical engineer.
The feasibility of the proposed Upper Williams Creek Dam and Reservoir is evaluated. If constructed,
the reservoir will be located on Williams Creek near its source. Storage capacity is expected to be 30,500
acre-feet of raw water. Responsibilities include:
 Conducting steady-state and rapid-drawdown finite-element dam seepage analysis
 Deflection and stability analyses of various sections of the proposed earth dam
[26]Upper North West Interceptor (UNWI) – Sections 3 and 4; North Natomas/Rio Linda
area; Sacramento County, California. Staff geotechnical engineer.
The Upper Northwest Interceptor Project Sections 3 and 4 (UNWI 3&4) consist of approximately
10,500 lineal feet of 84-inch, and 8,200 lineal feet of 66-inch, inside diameter interceptors at an invert
depth varying between 25 and 45 feet. Both Pipe jacking and open cut methods were used in
construction. Responsibilities include:
 Measuring water levels in monitoring wells
 Reviewing the validity of consolidation parameters
 Re-evaluation of pre-calculated settlement estimates and provide recommendations for an accurate
settlement analysis