The mark contains white lines and letters and also includes the use of color, as more fully described below. The entire mark is set against a black background. On the left side of the mark is a four-point diamond, which is comprised of four small individual diamonds, each of which is a different color, and each of which is exactly the same size. The four diamonds are set apart from one another. Beginning on the left and proceeding clockwise, the small individual diamonds are solid blue, red, yellow and white. A thick white line begins at the left point of the large single diamond (the small blue diamond) and runs up the upper left side of the diamond, in diagonal fashion. The line, which is continuous, runs up to the top point of the diamond and down the upper right side of the diamond, in diagonal fashion. The line, still unbroken, runs down to the right point of the large single diamond (the yellow diamond) and bends slightly to the left, such that the line continues away from the diamond, in horizontal fashion. Above this white horizontal line are written the words "U.S. CHEMICAL", which are in heavy, bold, white capital letters. The horizontal line ends parallel to, and just beneath, the right-hand most side of the "L" in "CHEMICAL". Just below the horizontal white line, beginning immediately below the "U" in "U.S"., is the word "storage", which is in smaller, bold, white lower case letters. The last letter of the word "storage", "e", is beneath and between the first "C" and the "H" in "CHEMICAL".