Macroplastics have been found in many locations, yet microplastics are more prevalent in the marine environment. This investigation is the quantitative measurement of macroplastics and microplastics in the sediment of Lake George, NY. In this study, a three step density separation was used to extract plastics from the supernatant. The three solutions used were; water, NaCl, and a sugar-water solution. Since these solutions have contrasting densities, the plastics with varying densities are allowed to be extracted. A further size classification of plastics was achieved by pouring the supernatant through stacked sieves with sizes of 2.0, 1.3, and 0.6mm. The most common plastic found was expanded polystyrene. A possible cause is the abundance of docks on Lake George, which utilize rigid foam in there construction. Over time the foam then becomes weak and can break off of the larger pieces and float on top of the water until wind or wave currents brings the foam to shore. In the future, this study will hopefully be given to Lake George Association to help address the ongoing issue of plastic pollution.