fig4 a shows the lift station 40 as being composed of essentially three main parts which include the access box 42 the tube 44 and the inner pipe 46 fig4 b illustrates in detail the inner pipe 46 this inner pipe 46 is capable of being lowered into and removed from the tube 44 depicted in fig4 a thus limiting the amount of work needed to replace a leaking inner pipe in an embodiment the inner pipe 46 has an inner diameter ranging from 1 inch to 100 inches 2 54 centimeters to 254 centimeters in another embodiment the inner pipe 46 has an inner diameter ranging from 10 to 50 inches 25 4 to 127 centimeters in a further embodiment the inner pipe 46 has an inner diameter ranging from 20 to 40 inches 50 8 to 101 6 centimeters in an embodiment the inner pipe 46 has a length ranging from 3 feet to 30 feet 91 meter to 9 14 meters in another embodiment the inner pipe has a length ranging from 5 feet to 20 feet 1 52 meters to 6 1 meters in an aspect the inner pipe 46 is shorter than the tube 44 in another aspect the inner pipe 46 is at least 1 shorter than the tube 44 in a further aspect the inner pipe 46 is at least 10 shorter than the tube 44 in the embodiment illustrated the inner pipe is the same length as the outer pipe however it is only necessary that the inner pipe be of a length equal to the.