Certification Letters are similar to feasibility soil studies, however, the main difference is that the drainfield site is survey located and will remain on file at the local Health Department (HD). As with land subdivisions, delineated drainfield and reserve areas are located by a surveyor for the production of a plat. A soil report containing a copy of this survey plat will be submitted to the local HD for review and approval. The certification letter is then issued and is kept on record at the local HD.
In essence, a Certification Letter is very similar to a Feasibility Soil Study, but the results are kept on file at the local HD. Having the soil study submitted to the HD may be more expensive, but it will be useful for any future real estate transactions, should the property change hands multiple times prior to development.