the combined concentration of the following five contaminants: dibromo- dichloro-, monobromo-, monochloro-, and trichloro- acetic acids

haloacetic acid(s), by-products of chlorination of water containing organics which are suspected carcinogens

Health Authority Approval: Has been renamed to Certificate of On-site Systems Approval ( COSA). A certificate issued by the MOA which serves as confirmation to lending institutions that the well and/or septic system, serving a single family residence, have been inspected by a professional engineer and have been found to be in compliance with the applicable standards.

High Access Area. areas such as school playgrounds, parks, daycares.

Height above aerodrome

Hepatitis-associated antigen.

Hospice Association of America

Historic Aircraft Association.

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