A wallet includes a pocket portion defining a front panel, a rear panel, a bottom, side edges, , an open top, and a flap portion that extends from the rear panel for folding over the open top to engage the front panel. The method is particularly adaptable to the treatment of sediments in bodies of water and includes process steps to destroy contaminants such as PCBs in one product stream and to capture heavy metals for disposal in a smaller second product stream. The annotation interface may alternatively not be displayed and allow for audio input. The first knife support surface is configured to support one of the knives that is urged against the first surface at a first hook angle, and the second knife support surface is configured to support one of the knives that is urged against the second surface at a second hook angle, which is different from the first hook angle. In particular embodiments, a portion of the characterization of the optical system is accomplished by using tilted black glass to provide a non-reflective reference.