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*Tests must be conducted within 10 m of the infiltration practice footprint area.  

*For infiltration BMPs with footprint surface areas from 50 - 900 m², a minimum of two test pits or one test pit and two soil borings are required at, or within 10 m of the proposed location to determine the suitability and distribution of soil types present;

*Where multiple test are carried out, they should be planned equidistant and mapped accordingly.  

*For infiltration BMPs with footprint surface areas > 900 m², a minimum of one test should be conducted for each 450 m² of footprint area. Tests should be conducted equidistant from each other to provide adequate characterization of the area;

*For linear infiltration BMPs (e.g. [[bioswales]], [[enhanced grass swales]], [[infiltration trenches]], [[exfiltration trenches]]) a minimum of one test should be conducted within each soil mapping unit present along the proposed BMP location. Soil borings should be conducted every 50 m and a test pit should be conducted every 450 m; and

*For sites with multiple infiltration BMPs, each with footprint surface area < 50 m², a minimum of one test pit is required and one soil boring per infiltration BMP location is recommended.

 

*The recommendations above are guidelines. Additional tests should be conducted if local conditions indicate significant variability in soil types, geology, water table levels, depth and type of bedrock, topography, etc.

*The recommendations above are guidelines. Additional tests should be conducted if local conditions indicate significant variability in soil types, geology, water table levels, depth and type of bedrock, topography, etc.

*Similarly, uniform site conditions may indicate that fewer test pits are required. Excessive testing and disturbance of the site prior to construction is not recommended. <ref>Christopher B. Burke Engineering LLC. (2009). Soil Infiltration Testing Protocol SOIL INFILTRATION TESTING PROTOCOL Purpose of this Protocol Who Should Conduct Testing. Retrieved from https://www.in.gov/ocra/files/Appendix F - Soil Infiltration Testing Protocol.pdf</ref>

*Similarly, uniform site conditions may indicate that fewer test pits are required. Excessive testing and disturbance of the site prior to construction is not recommended. <ref>Christopher B. Burke Engineering LLC. (2009). Soil Infiltration Testing Protocol SOIL INFILTRATION TESTING PROTOCOL Purpose of this Protocol Who Should Conduct Testing. Retrieved from https://www.in.gov/ocra/files/Appendix F - Soil Infiltration Testing Protocol.pdf</ref>

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