removed from the ports and plugs 166 and 168 are reinstalled on respective ports 162 and 164 referring once more to fig1 hydraulic cylinders 130 used to tilt collection tank 14 and backfill reservoirs 20 and 22 are powered by electric hydraulic pump 30 hydraulic pump 30 connects to a hydraulic reservoir 170 and is driven by the electrical system of motor 16 a high pressure output line 171 and a return line 173 connect pump 30 to hydraulic cylinders 130 hydraulic pump 172 mounted on trailer 24 is separately driven by motor 16 and includes its own hydraulic reservoir 174 an output high pressure line 175 and a return line 186 connect pump 172 to a pair of quick disconnect couplings 182 and 184 respectively that is high pressure line 175 connects to quick disconnect coupling 182 fig1 and 2 through a control valve 178 and return line 186 connects quick disconnect coupling 184 to reservoir 188 a pressure relief valve 176 connects high pressure line 175 to reservoir 188 and allows fluid to bleed off of the high pressure line if the pressure exceeds a predetermined level a pressure gauge 180 may also be located between pump 172 and control valve 178 quick disconnect coupling 182 provides a high pressure.