Abstract: A field-adjustable separation device including a base and a sidewall cooperatively defining a separation compartment. The device includes an inlet conduit attached to a first portion of the sidewall and an outlet conduit having a first segment including a distal end of the outlet conduit removably attached to a second portion of the sidewall substantially opposite the first portion. The outlet conduit also has a second segment fluidly interposed between the first segment and the separation compartment. The second segment includes a sectioned portion defining a plurality of pre-determined locations spaced along the second segment. The first segment is in fluid communication with an exterior of the separation compartment. The second segment is configured for adjustment to define an outlet orifice according to the plurality of pre-determined locations to provide fluid communication between the first segment and the separation compartment.