What is site assessment?
We look at many factors, starting with determining the design sewage flow for the proposed system. To do this we have the client complete our Owner Declaration Form outlining the proposed occupancy and usage of the property.
We then look at the site and consider the following: location of wells, fresh water supplies, breakout points, perimeter drains, property lines. We look at the vegetation and soils, equipment access, surface and groundwater intrusion, rock, distance of site from sand, gravel and topsoil supplies. We analyze the soil composition and permeability while we are onsite.
When we have completed the site assessment we have an understanding of what the constraints are and how severe they are.
The process to assess the site, design, install and certify the installation is as follows:
The soils are the key to a well-functioning onsite sewage system. Typically, 70% of the treatment will take place in the soil. The texture, structure, and permeability of the soil are critical as these factors are used to determine the maximum hydraulic loading rate (HLR) for the soil. A larger hydraulic loading rate will result in a smaller dispersal field.
Soil depth is also a key factor to designing a dispersal field. Treatment in the soil occurs in unsaturated conditions, therefore, the depth of unsaturated soil is key to achieve sufficient treatment. If there is insufficient soil depth to a restrictive layer (bedrock, seasonal high-water table, or massive clay), additional sand will be required to increase the vertical separation.
CSSi does over a 100 projects per year. In addition, many of our projects come as referrals from ROWP planners and installers. Many other projects come from referrals from satisfied customers.
Many of our jobs are for challenging sites. Consequently, with the large number of projects and the degree of difficulty, we have an excellent record in developing cost-effective solutions for challenging sites. Most of the other companies represent a particular type of treatment plant. Therefore, they will install whatever treatment plant they represent even though it may not be the best option for the site. CSSi deliberately does not represent any one treatment plant manufacturer, even though it could be more profitable to do so. We chose to be independent of the treatment plant suppliers so that we can choose the most appropriate system for the situation.
For more information about our services, please give us a call.
We provide detailed sewage site assessments and engineer appropriate designs for what you need.
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