Section 15.100 - General Provisions(1) Every location proposed for the construction, upgrade, or expansion of an on-site subsurface sewage disposal system shall be evaluated based upon an analysis of all site characteristics which may affect system function and performance in accordance with the evaluation criteria specified in 310 CMR 15.101 through 15.107.(2) Each location shall be field evaluated for suitability for subsurface sewage disposal consistent with 310 CMR 15.000 by a Soil Evaluator approved by the Department in accordance with 310 CMR 15.017 prior to the commencement of final system design pursuant to Subpart C of 310 CMR 15.000 and application for a Disposal System Construction Permit. The evaluation shall include a soil profile on every proposed disposal area for which a Disposal System Construction Permit has not yet been issued.