2017 Fall - UH - None - Willowlake Park Soil Sample Data for Soil Sample and Researcher Willowlake Park, Willowlake Park Dr., Houston, TX 77064, United States Collection Date of Soil Sample September 3, 2016 Positive Paraoxon, Positive Methyl Parathion Researcher Unknown Organization University of Houston Course Term Fall Year of Course 2016 Images for Soil Sample