2010 Annual Report
1)Planning and Preparation,.
3)Sample Analyses. The first sampling campaigns in New Mexico and South Texas were completed in FY2009. All samples for the NM gin (approximately 1800) and for the South TX gin (approximately 1400) were taken to the USDA-ARS AQL in Lubbock, TX, and analyses were begun and continued into FY2010. Although processing the samples was a high priority, the primary focus was to prepare for and sample the two California gins in October and then prepare for the two gins to be sampled Fall 2010. The planning and preparation process for the sampling campaigns progressed in several different areas. The PIs made site evaluations at the gins to assess each site's potential and to lay out the pre-developed sampler arrays using GPS units. While on site, measurements and adjustments to the airflow for each gin system to be sampled were made to ensure that they were operating according to regulations. Since the gins used their gin yard for module storage, an additional site visit to those gins was required prior to the ginning season to bury electrical lines for the samplers. The cyclone extensions with sampling ports were specified and ordered for each gin. Also, the stack sampling and ambient sampling equipment, used during previous sampling campaigns, was cleaned, calibrated, and prepared for the upcoming sampling campaigns. Actual sampling was long and arduous for the USDA sampling crew. In October 2009, thirteen unique systems were source sampled at each of the California gins. Ambient sampling occurred over 14 days (approximately 24 hours per day). Between source and ambient sampling, over 2600 samples were collected at the two gins. The USDA crew was on site at the California gins for 4 and a half weeks. Nine systems were sampled at a gin in Missouri in September of 2010 over approximately 3 and a half weeks, with a total of approximately 1500 samples collected. Sample analysis at the Lubbock AQL occurred throughout the year. Between the five gins (NM, TX, CA, MO) sampled to date, over 7000 samples including filters and wash tubs have been brought back to the AQL for analysis. Photographs of every sample to document anomalies were taken. Gravimetric analyses of all the New Mexico (approximately 1800) and Texas (approximately 1400) samples and California samples (approximately 2600) were completed. Particle size distribution analyses were also completed on all samples from gins in New Mexico, South Texas, and California. The project will continue in FY2010 with a gin to be sampled in West Texas and continued sample and data analyses. The investigators are currently working on a manuscript detailing the sampling plan for the project and presentations on the sampling plan were made at the 2010 Beltwide Cotton Conferences in San Antonio, Texas.