Between December 2004 and April 2005, Komex conducted a best management practice (BMP) research project at the California Polytechnic State University (Cal Poly) San Luis Obispo vineyard. The goal of this project was to implement a BMP at the vineyard to reduce and slow the offsite movement of soil and water. The BMP selected was cover cropping. A demonstration site was established in the eastern 12 rows of block one. Each row was approximately 650 feet long by 8 feet wide. The site was divided into three sub-blocks, designated as Block 1 through Block 3, with two sections to account for slope differences. The following three treatments were applied to each block (one per row): 1) bare with straw – straw placed on top of the soil at a rate of 2 tons per acre and tacked down using a ring roller; 2) non-native mix - drilled in using a Schmeiser drill at a rate of 100 pounds per acre; and 3)native mix - hand broadcasted at a rate of 25 pounds per acre. The seeds were secured using a ring roller. In addition, one row was left bare as a control. Komex installed 16 sediment monitoring locations in four different, randomly selected, treatment rows to measure sediment changes using a modified version of the Sedimentation-Erosion Tables (SETs) Method (Callaway 2000). Field monitoring included: 1) measuring soil loss from each treatment at the sediment monitoring locations; and 2) measuring percent cover using the Line – Intercept Method (Carratti 1996). Results gathered from this project suggest that placing and crimping straw on the soil surface and planting natives reduces sediment loss greater than adding non-natives or leaving the soil bare. In addition, slope difference at this location, played little role in accelerating or decreasing soil loss from the area.