I WAS REFERRED TO A CUSTOMER THAT WANTS THE REAR SECTION OF THEIR YARD CLEANED UP..OLD FALLEN TREES SMALL SAPLINGS THAT WILL NEVER BE ANYTHING BIGGER...LOTS OF POISON IVY....A QUICK LOOK TELLS ME THERE IS PROBABLY ABOUT 15-25 YARDS OF WASTE THE AREA IS ON A HILL AND IS NOT VERY EASILY ACCESSED. DO YOU GUYS PRICE THIS TYPE OF WORK BY THE SQUARE FOOT OR BY VOLUME OF MATERIAL REMOVED...OR BY MAN HOURS PLUS DISPOSAL?..ANY INPUT WOULD BE HELPFUL..