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How We Inspect A System |  |
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How We Inspect A Septic |
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| The Following Methodology Is Used: The inspection methods used at each site will vary, but the general procedure will be the same. The first step is the research phase. We gather all available data about the system. This may include local permits, the county soil survey, a review of any other data, and a homeowner interview. This interview is a particularly good idea if no records exist. After the research is completed the field survey can take place. Some people quit at the research stage. This is a great way to invite problems, since without the field check the inspector could certify a disaster. Record Review Requirements: 1. The Code 2. Soil Survey 3. Permit 4. Other Information The inspection is likely to focus on a property transfer and the use of the system by a new owner. The Inspection consists of three parts: The current use of the system and the effects of the use. The condition and performance of the septic tank. The condition and performance of the soil treatment system. The order in which we inspect the parts of the on-site system may be dictated by the site, but the following is a typical flow for completion. System Use: We begin by determining the age of the system. The older the system, the more likely problems will occur. Also, older systems may have been using significantly different technologies than are currently in use. Along with determining the age of the system, we review records of previous inspections. Older systems may not have been reviewed or noted, or have any records available. On the other hand, newer systems may have complete records that make it easier to review and identify problems. The next thing we check is the flow of wastewater going to the system. Flow can be estimated based on the number of bedrooms in the building compared with the number of current residents and patterns of water use. Evaluating Septic Tank Performance: The septic tank holds a wealth of information about the operation and performance of the entire on-site system. Some states use the tank as the single point of information about and entire system. Although the inspection will include examinations of other system components, we start by opening the tank and looking into it. For many tanks that means opening the 20-inch manhole in addition to any other manholes on the top of the tank. For other tanks it means taking a section of the lid off. We have to be able to see the inside of the tank, so opening the four-inch inspection pipe will not be sufficient. Then we pump the tank. We then check the baffles in the tank. The baffles begin the settling process by forcing the flow downward, keeping the scum inside the tank and ensuring that effluent leaving the tank comes from the clear liquid layer. If there are problems with the baffles, the system cannot work properly. Next we check the construction and installation of the tank. We evaluate soil system performance, and check drop boxes and distribution boxes. The Leaching System: We inspect the leaching system itself. This inspection includes: 1. Distribution 2. Soils 3. Surface Water 4. System Performance 5. Surfacing Effluents 6. System Sizing Records: The final step in the inspection is completing the reports. |
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