2015 Spring - UH - None - Ngoc Nguyen - Sample 1 Data for Soil Sample and Researcher My Back Yard, 11903 Bogey Way, Houston, TX 77089, United States Collection Date of Soil Sample January 26, 2015 Positive Paraoxon, Positive Methyl Parathion Researcher Ngoc Nguyen Organization University of Houston Course Term Spring Year of Course 2015 Images for Soil Sample