ACWP

Year Completed:
In Progress

Construction Cost:
Varies Pending on Project

Client:
US Army Corps of Engineer, New Orleans District

USACE

Nature of the Work:

  • Design Support Services
  • Multidisciplinary Planning

USACE General Design Support Services and Multidisciplinary Planning Primarily Within the Limits of the New Orleans District

Project Description

In September 2006, Espey Consultants, Inc. was selected as the most preferred firm for Solicitation No. W912P8-06-R-0198 by the US Army Corps of Engineers, New Orleans District. Since awarded the contract, Espey Consultants, Inc. has received several projects including:

Breakwater at Bonnabel Pumping Station, Metairie, Louisiana

As part of the Lake Pontchartrain and Vicinity, New Orleans, Louisiana Hurricane Protection Project, Espey Consultants, Inc. (EC) was tasked with the preparation of plans and specifications for a Breakwater at the Bonnabel Pumping Station, in Jefferson Parish.  The purpose of the breakwater was to protect the pumping station from storm surge in Lake Pontchartrain during major storm events. 

EC, as prime consultant, managed the design team to perform ground survey and hydrographic surveys, geotechnical borings and analysis, and structural design and analysis for the breakwater.  For this project, EC provided a Design Quality Control Plan (DQCP), monthly project summary reports, and design submittals which included plans developed using Microstation V8, specifications written using SPECSINTACT software, bid item quantities, an engineer’s estimate of construction costs, design documentation reports, and an Independent Technical Review.

Develop Hydraulic Design Requirements for Intake and Discharge Basins for a Proposed Pump Station and Gate Structures on the West Bank of New Orleans, Louisiana 

The project scope consisted of developing hydraulic design requirements for intake and discharge basins for a proposed drainage pumping station and gate structures located at the GIWW South and Algiers flood control gates (New Orleans, LA).
 
GIWW
EC received a Task Order to develop hydraulic design requirements for intake and discharge basins for a proposed pump station and gate structures on the west bank of New Orleans.  Two alternative locations were reviewed by the United States Army Corps of Engineers (USACE): the first location is just south of the confluence of the Harvey and Algiers Canals (Alternative 2), and the second location is just north of the confluence along the Algiers Canal (Alternative 3).  For Alternative 2, two flow conditions were analyzed – 25,000 cfs and 16,000 cfs.  The Alternative 3 site flow conditions are 20,000 cfs and 12,000 cfs.  The results of the preliminary hydraulic design will provide input to the 2-D TABS model being performed by the US Army Corps of Engineers.

Hurricane Protection Project at the Old Estelle Pump Station to the New Estelle Pump Station

As part of the Westbank and Vicinity, New Orleans, Louisiana Hurricane Protection Project, EC prepared a Design Documentation Report and Plans and Specifications for the replacement of hurricane protection at Old Estelle Pump Station to New Estelle Pump Station in Jefferson Parish.  EC, as prime consultant, provided civil engineering services for the project, which also included plans and specifications for pile load testing.  EC prepared a Design Quality Control Plan (DQCP), monthly project summary reports and design submittals which included plans, specifications, bid item quantities, an engineer’s estimate of probable construction costs, design documentation reports, and an Independent Technical Review.  Final Design included full levee sections with geotextile reinforcement and T-Wall monoliths with a swing gate for maintenance access to the flood side of the levees.

Harvey Canal West Bank Levees (WBV 14a.2)

The Harvey Canal West Bank Levees in Jefferson Parish, Louisiana, project included civil design, structural engineering, geotechnical engineering, and surveying for the replacement of an existing I-Wall with T-Wall monoliths and an enlarged earthen levee to provide 100-year flood protection along the West Bank of the Harvey Canal. EC, as prime consultant, managed the design team to provide professional engineering services. EC prepared a Design Quality Control Plan (DQCP) and design submittals which included plans, specifications, bid item quantities, an engineer's estimate of probable construction costs, construction schedule, design documentation reports, and an Independent Technical Review.

New Orleans Drainage Analysis

The New Orleans Drainage Analysis project provided an interior drainage analysis to define the flood hazard in the protected area, including the elements that were relevant to assessing the 1% annual exceedence flood for 10 Polder Systems in Jefferson and Orleans Parishes. The analysis was completed using the hydraulic and hydrologic models that were developed in connection with the flood insurance studies linked to the latest DFIRM update.

The modelers for each Polder in the HSDRRS followed the technical evaluation guidance outlined in EC 1110-2-6067 "USACE Process for the National Flood Insurance Program (NFIP) Levee System Evaluation" page 30 paragraph 9.f. (9) "Interior Drainage". The modelers followed the guidelines and criteria for performing an interior drainage analysis outlined in EM 1110-2-1413 "Engineering and Design – Hydrologic Analysis of Interior Drainage Areas". The analysis consisted of three basic steps; a) Existing Models - Perform model runs to verify existing modeling data for HEC-RAS and HEC-HMS models, b) Modified Conditions - Adjust model geometry to reflect impacts of perimeter HSDRRS construction, perform model runs, and complete calibration, c) Changed Drainage Patterns - Evaluate effects of changes on interior drainage patterns. Documentation of interior drainage changed patterns will be included within the Levee System Evaluation Report (LSER) as an appendix.

 

2001-2011 Espey Consultants, Inc. All Rights Reserved.
Site designed by Winchell's Web Works


DHTML Web Menu by OpenCube