(Approved February 1999 for Solid Waste Cleanup Program)
Each CIA site should be given one of the following priority (letter) codes.
|A||Confirmed pollution or nuisance from landfill gas or leachate seep, exposed burn ash, or exposed combustible or putrescible garbage
|B||Release or suspected release of landfill gas or leachate seep with threat of nuisance or pollution, or inadequate cover of burn ash.|
|C||No confirmed release of landfill gas or leachate seep or no release of landfill gas or leachate seep with significant threat of pollution or nuisance. Adequate cover for burn ash. Minimal action needed to prevent human contact with waste.|
|D||No threat to public health and safety or the environment (e.g., inert waste site, very old closed site with no potential for landfill gas or leachate migration, clean closed site).|
|UC||Unconfirmed site (e.g., site which can neither be confirmed nor denied as a solid waste disposal site).|
|NS||Not a solid waste disposal site (e.g., hazardous waste site regulated by DTSC, proposed/never built site, non-disposal site)|
Only CIA sites with primary priority codes of A, B, or C should be given a secondary (number) code (Note A0 used for emergency condition).
|1||Inhabitable structures or planned improvements within 1000 feet of site.|
|2||Significant residential, commercial, industrial, park, recreation, or environmentally sensitive areas within one mile of site.|
 “Pollution” means the condition caused by the presence in or on a body of water, soil, or air of any solid waste or substance derived therefrom in such quantity, of such nature and duration, or under such condition that the quality, appearance, or usefulness of the water, soil, land, or air is significantly degraded or adversely altered (PRC §40171).
“Nuisance” includes anything which is injurious to human health or is indecent or offensive to the senses and interferes with the comfortable enjoyment of life or property, and affects at the same time an entire community, neighborhood, household or any considerable number of persons although the extent of annoyance or damage inflicted upon an individual may be unequal and which occurs as a result of the storage, removal, transport, processing or disposal of solid waste (27 CCR 20164).