During site evaluation, the test pit should be located at the location of the proposed leaching bed.

• A. at the location of the proposed leaching bed
• B. at the property line
• C. at the street
• D. at the neighbor's property

Answer: (A)

The test pit is used to evaluate the exact soil conditions where the leaching bed will be installed, because those conditions determine how fast and how well wastewater will infiltrate and disperse. By placing the pit at the proposed leaching bed location, you get an accurate reading of soil texture, depth to groundwater or bedrock, moisture, and infiltration rate under the actual area that will receive effluent. If you tested somewhere else—like along a property line, in the street, or on a neighbor’s lot—the soil conditions could be different, leading to an incorrect design or spacing. The only placement that ensures the evaluation matches the installation is at the location where the bed is planned.