A. These Regulations are based on the premise that development should not impact adjacent and/or downstream property owners in a detrimental manner compared to the pre-development condition. It is not the intent of these Regulations to make Pierce County a guarantor or protector of public or private property with respect to development.

B. These Regulations are intended to assist, but not to substitute, competent work by professional engineers. It is expected that the professional engineers will bring to each project the best of their skills and abilities to see that the project is thoroughly analyzed and designed correctly, accurately, and in compliance with generally accepted engineering practices. These Regulations are not intended to address all situations or to unreasonably limit any innovative or creative effort in design and construction which could result in better quality, cost savings, or improved performance of a project's storm drainage system.

C. These regulations implement a major component of the County's National Pollution Discharge Elimination System (NPDES) Stormwater Permit.

D. These regulations intend to make low impact development principles and low impact development best management practices the preferred and commonly used approach by development.