Engineering Reports

Cross Lake Dam, Spillway, and Intake Structure Study:

The purpose of this expansive study, was to examine four areas of concern on this project. These four areas involved the downstream side of the embankment, Cross Lake Dam, Spillway, and the Water treatment plant Intake Structure. The Study area for this project was limited to these aforementioned areas and their surrounding lands. Ultimately, this study was designed to research these four areas of concern, establish alternate solutions for the issues affecting the areas, and propose a potential course of action in a recommendation to the City of Shreveport. The recommendations were taken under advisement, so a possible future course of action for these areas of concern could be responsibly selected and acted upon for future projects. Some of the design alternatives that were called for and examined for the purposes of this report were a Longitudinal Stone Toe Protection installation, a Fluvial Geomorphological study, an Underwater Inspection, construction of a New Spillway, a new Fusegate System, an new Inflatable Weir System, Removal of Vegetation from Dam Embankment, a Mobile Limpet Cofferdam, and the construction of a New Intake Crib with a new Cylinder Screen System. One of the design solutions proposed in the study that was a dam clearing project that the City retained this firm to undertake, which was completed in 2015.

Caddo Parish Drainage Study:

This report contains information compiled for a Drainage Study of part of the Subdivision "A Quiet Place in the Woods" which is located in Keithville, Caddo Parish, Louisiana. This report was prepared for the Caddo Parish Commission Department of Public Works. This project is over an area of approximately 38 acres crossing through several units of the previously mentioned Subdivision, more specifically Units 2-4. The primary data that was utilized for this report was collected through field survey work of the surrounding area. Additionally resources from the Federal Emergency Management Agency (FEMA), along with Topographic maps of the area produced by the Caddo Parish Commission, and State Quarter section maps were also used in compiling this report. This Study area was established arbitrarily in order to provide a wide enough area for the study, as well as include portions of the drainage ditch that is running along the Southern line of Unit Number 3. The results showed surface elevations indicated there were several low lying areas in and around the Subdivision. Thus the type of intense rainfall that was examined in the Study will cause temporary flooding within the nearby area. Therefore the Study showed that due to the conditions of the existing ditch, low lying surrounding areas, and the fact that portions lie in a Flood Zone flooding will occur within the Study Area during heavy rainfall.

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Storm Water Pollution Prevention Plans:

These reports contain information compiled from the Grading, Drainage, Retention and Erosion Control Plans prepared for the specific projects that they are required for. These reports are prepared for the respective municipalities in which the project site resides in at the time of the construction. The report outlines the primary erosion control to be utilized on the site during construction. These controls are designed to retain sediment onsite, and prevent erosion. The timelines for the installation of the controls are diagramed, and outlined for the purposes of the report. The process for how sediments are to be removed from the construction sites are described, along with the sediment traps that are called for to be utilized. These controls are existing site during the construction process. The proposed Stormwater drainage systems that were designed for the respective project is also provided in these reports, along with adequate descriptions and diagrams showing where they are to be installed. The reports have been produced for large expansive commercial building projects, privately owned hotel projects, as well as smaller residential projects as well. A&A has produced these reports when needed on projects for over 15 years.

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FEMA Elevation Certificates:

This firm has issued FEMA Flood Elevation Certificates for residents of Shreveport, Bossier, & Benton for over 30 years. During that time frame the requirements from FEMA have evolved with revisions to their form, and we continue to stay up to date with all of the necessary items. These reports are prepared at the request of the client whose property is in a designated special flood hazard area (SFHA) by FEMA. These areas are known as "flood zones" but one misnomer is that they are not permanent. Instead these zones can change over time due to a host of factors FEMA takes into account, and makes periodic adjustments to them through new map revisions. These maps are called Flood Insurance Rate Maps (FIRMs). Once a structure is designated to be in one of these flood hazard areas, insurance requires the owner to obtain a FEMA Flood Elevation Certificate. This is what our company provides at the client's request.

FEMA Letter of Map Amendments (LOMAs):

If a client believes their structure to be above the flood plane designated by their SFHA zone, they may request a Letter of Map Amendment (LOMA). The purpose of the LOMA is to officially amend the effective FIRM map for the client's property. Our company has performed these for both residential clients, as well as corporate businesses over the years. Please click on the FEMA links above for additional information.