(DRMO).  When  this  is  not  possible,  the containers  must  be  disposed  of  through  a government-approved   contractor   or   in   a sanitary landfill approved by local government authorities. Waste oils, filters, and contaminated fuel should  be  collected  and  disposed  of  properly. Most   naval   activities   collect   and   dispose   of waste   oil   periodically   through   a   contractor who  may  burn  it  in  a  boiler  plant  or  in  a heating  system.  Naval  supply  fuel  farms usually have the means to dispose of waste oils properly. You will see contaminated water draining from   the   Equipment   Operator’s   washrack every  day.  Work  closely  with  the  person  in charge  of  the  washrack  to  ensure  that  this wastewater is treated and not discharged into the storm sewer. Provisions must be made for pretreating  or  separating  oil  products  and cleaning solvents used at the washrack. Other  than  preventing  oil  pollution  from vehicle and base equipment operation, Seabees are being considered for use in beach cleanup during  major  oil  spill  disasters.  In  case  of  a regional  or  national  disaster  from  a  major  oil spill,  this  new  manpower  capability  can  be used  very  effectively  by  local  commanders.  A well-trained Seabee team can form the nucleus of a large-scale beach cleanup exercise team by using   qualified   personnel   and   heavy equipment. AIR   POLLUTION You   should   be   aware   of   the   work conditions  that  cause  air  pollution  and  of  the efforts   required   to   reduce   or   correct   the problem. When   incomplete   combustion   occurs   in boilers,   space   heaters,   and   stoves,   the unburned hydrocarbons and various other fuel components  combine  chemically  to  form  by- products.  Many  of  these  by-products  are harmful when emitted into the environment. These  by-products  that  affect  the  air  are carbon  monoxide,  particulate  matter,  sulphur oxides,   unburned   hydrocarbons,   nitrogen oxides,  and  lead.  The  most  effective  means  of controlling  air  pollution  from  incomplete  fuel combustion   is   to   maintain   the   equipment properly  and  frequently.  In  this  way,  the equipment is operating at an optimal fuel and oxygen   mixture.   Another   alternative,   not always  under  your  control,  is  to  use  only  the best  grade  of  fuel.  This  fuel  contains  low particulate  matter,  low  water  and  sulphur content, and few contaminants. ASBESTOS Asbestos  dust  is  another  air  pollutant  that you  must  be  knowledgeable  of  and  concerned with  in  the  installation,  maintenance,  and removal   of   asbestos   material   from   a construction  site. Asbestos is a fibrous material that can be wooven   like   wool.   Through   a   variety   of processes,   asbestos   can   be   turned   into thousands  of  construction  products.  Asbestos has been used by humans for over 2,500 years, It  was  not  until  the  1800s  that  asbestos  was determined  to  be  a  health  hazard.  In  the 1900s, asbestos was discovered to be the main cause of asbestosis (a generic term for a wide range   of   asbestos-related   disorders)   and mesothelioma.  Mesothelioma  at  one  time  was a very rare form of lung cancer. It is presently occurring much more frequently among people exposed  to  asbestos  dust  particles. 16-2