sensor or may be controlled manually by using a joystick 62 which is coupled to the control panel 34 in operation in order to empty the on board sewage storage tank the operator parks the vehicle 10 near a sewage disposal unit at a campsite or recreational vehicle park for example and removes the cover to expose the sewage conduit 18 and the apparatus 12 using the control panel 34 the operator then initiates movement of the apparatus 12 to move the outlet 20 of the sewage conduit 18 into communication with the sewage disposal unit as shown in fig5 and 6 once the outlet 20 is positioned so that sewage exiting the sewage conduit 18 will be deposited into the sewage disposal unit the operator then opens the valve at the outlet of the sewage storage tank to allow sewage to empty from the on board sewage storage tank once sewage disposal is complete the operator operates the control panel 34 to close the valve and retract the apparatus 12 into the recess 14 in another embodiment the base 22 link arm 24 and upper arm assembly 26 are manually operable to move the outlet 20 of the sewage conduit 18 into communication with the sewage disposal unit in this embodiment the motor control panel and hydraulic cylinders are omitted and a handle is coupled to the extendible arm 30 adjacent the second end 48 in operation the operator would manually locate the outlet 20 of the sewage.