Other  specific  labeling  requirements  are  provided in  the  NAVSUPINST5100.27  (series).  All  supervisors should   carefully   review   the   contents   of   this instruction. HAZARDOUS  MATERIAL  STORAGE The safest practice concerning hazardous material is to draw only the amount of material that can be used that day. Storing hazardous materials on the jobsite requires the use of approved storage containers. These containers must be placed a minimum of 50 feet away from  any  ignition  device  or  source.  Plan  for  the delivery of proper storage equipment before having hazardous  materials  delivered  to  the  jobsite.  Since many hazardous materials require separate storage containers  (as  an  example,  corrosives  and  flammables cannot be stored together), consult your safety office HAZARDOUS  MATERIAL  TURN-IN Any excess material must be disposed of through an  authorized  hazardous  material  disposal  facility. Proper  labeling  of  hazardous  materials  is  critical. Properly  labeled,  waste  can  be  disposed  of  for  a relatively low price. Unidentified material must first be analyzed, which is extremely expensive. Anytime you  turn-in  hazardous  material,  an  MSDS  must accompany  the  material  and  ensure  the  MSDS  is ledgeable. This will save valuable time and expense and make the job easier for supply. Avoid mixing unlike types of waste. Do not mix waste paint thinner in a waste oil drum. The Navy sells uncontaminated waste oil for a profit. If only minor amounts  of  any  other  substance  are  present  in  the waste oil, the Navy must pay high prices for analysis and  disposal.  The  best  method  for  disposal  is  properly labeling the materials and returning them, unmixed, to the supply department. Each container must be clearly labeled,  preferably  with  the  BM  line  item  or  other supply tracking documentation. It is always best to check with the battalion MLO staff or safety office for proper  disposal  procedures. PLANNING  AND  ESTIMATING  (P&E) Good   construction   planning   and   estimating procedures are essential for any Seabee. This section is intended to give crew leaders helpful information for  planning,  estimating,  and  scheduling  construction projects.  This  material  is  designed  to  help  you understand the concepts and principles and is NOT intended  to  be  a  reference  or  establish  procedures. There  are  Special  Construction  Battalion  Training classes (SCBT) specifically for Steelworker P&E as well  as  C-1  Advanced  P&E  school  (NEC  5915)  for Seabees. NOTE:  There   are   various   techniques   for planting,  estimating,  and  scheduling.  The  procedures described  herein  are  suggested  methods  that  have  been proved with use and result in effective planning and estimating. PLANNING Planning   is   the   process   of   determining requirements and devising and developing methods and   actions   for   constructing   a   project.   Good construction   planning   is   a   combination   of   many elements: the  activity,  material,  equipment,  and manpower  estimates;  project  layout;  project  location; material delivery and storage; work schedules; quality control;  special  tools  required;  environmental protection; safety; and progress control. All of these elements depend upon each other. They must all be considered  in  any  well-planned  project.  Proper planning  saves  time  and  effort,  making  the  job  easier for all concerned. ESTIMATING Estimating  is  the  process  of  determining  the amount  and  type  of  work  to  be  performed  and  the quantities of material, equipment, and labor required. Lists of these quantities and types of work are called estimates. Preliminary  Estimates Preliminary  estimates  are  made  from  limited information,  such  as  the  general  description  of projects   or   preliminary   plans   and   specifications having little or no detail. Preliminary estimates are prepared  to  establish  costs  for  the  budget  and  to program  general  manpower  requirements. Detailed  Estimates Detailed   estimates   are   precise   statements   of quantities  of  material,  equipment,  and  manpower required to construct a given project. Underestimating quantities can cause serious delays in construction and even result in unfinished projects. A detailed estimate must be accurate to the smallest detail to quantify requirements   correctly. 1-17