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basins to handle the 25 year storms and can be increased by ten to twenty percent as necessary . Wilson added that staff has extensive experience with twenty years of operating municipal waste and C &D landfills without any offsite contamination of surface water or groundwater from the sites . The State Land Quality Division checks the sedimentation levels on the site regularly . He noted that C &D Landfills are not regulated to be lined because the materials accepted are not a threat to the environment, are required to meet drinking water standards at the boundary of the site for surface and ground water . . CFE members asked questions about other treatment of runoff and whether there was construction material that is considered prohibited . Wilson replied that C &D materials in liquid form were prohibited . , such as wet paint . Pratt suggested that the character of construction materials should be considered since these items have changed significantly over the past 10 years because materials such as plastics , glues , phynenolics products , and other things that could potentially break down in the groundwater are different from the previous types of wooden C & D materials . He also noted that a lot of artificial items have been introduced into the construction business . Wilson replied that EPA does the scientific evaluations of the materials and places restrictions on the landfill operations . The state has the opportunity to scrutinize the regulations and make them more stringent . Asbestos for example is a material that has special handling procedures in that it is governed closely . The Landfill is only allowed to receive asbestos generated from work on a private residence and are not allowed to receive any commercial asbestos . They would be referred to facilities to do handle that type of disposal . F, Pratt asked about demolition materials and if an inspector takes a sample of the debris to determine what is in it . For example , if a building was torn down the debris might not constitute building materials . Wilson replied that if the materials were in the building and were not any of the prohibited items . No petroleum tanks , barrels are allowed . Inspectors on the site watch each dump and if anything like a tank or barrel is spotted the operation is stopped and investigated . They will load these items back onto the trucks and must take it back with them . Okun asked how many inspectors are on the site at one time . Wilson replied that three are on staff and a requirement that at least one must be on site at all operational times (usually two) . They are trained in identifying materials . The inspector ' s job is totally to inspect the loads being dumped . There is an equipment operator who has another view from a higher location and rakes the material out to be inspected . We also have a C &D recycling person who is looking for recyclable materials and looking for other items such as metal that can be sold . Pratt noted that some types of sensor devices could be used to locate petroleum type materials and asked if anything like that is used to discern what might be in saturated soils in huge dump - truck loads of materials . Wilson noted that it would not be impossible to sneak in small amount of saturated soil . He noted that the waste - stream in Orange County is ideal due to lack of industry and potential heavy polluants . Last updated 09/29/99 4