Water Treatment Plant - Executive Summary |
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We have adopted this Program in order to implement 40 C.F.R. 68, the federal requirements regulating Risk Management of Highly Hazardous Chemicals. This Program will help prevent the occurance of, or minimize the consequences or, catastrophic releases by stating our policies and procedures for the management of process hazards in start-up, operation, inspection, maintenance and the other matters addressed in the federal standard. Our Program calls for maximum employee participation and includes all elements of the employee participation provisions of the standard. We shall, as a minimum: (1) consult with employees and their representatives on the conducts and development of the process hazard review and other elements of the risk management plan, and (2) provide to our employees and their representatives access to the process hazard review and all other information required to be developed under that standard. Accidental Release Prevention and Emergency Response Policies The City of Blackwell has taken steps to train the operators, supervisor, maintenance crews, and fire department to be first responders to a release. The training included three days of classroom and hands on training on the proper use of emergency response equipment and procedures. The course followed the guidelines state in OSHA 1910.120. Stationary Source and Regulated Substances. The Water Treatment Plant utilizes chlorine for disinfection of the water supply for the City of Blackwell. The maximum inventory of chlorine the Water Treatment Plant may have on site is 8,000 lbs. The threshold quantity for chlorine is 2,500 lbs. Offsite Consequence Analysis The offsite consequence analysis includes a worst-case release scenario and an alternative release scenario as defined in 40 C.F.R. 68. A dense-gas dispersion model (SLAG) was used to determine endpoint distances for both scenarios. A dense-gas model is required since chlorine is heavier than air. The model's input parameters are s ummarized in the table below. RMP* Comp Input Parameters Worst-Case Scenario Alternative Scenario Windspeed (m/s) 1.5 3.0 Atmospheric Stability Class F D Temperature (0 F) 77 77 Surface Roughness flat flat End points (mg/l) 0.0087 0.0087 The results of the air dispersion model are summarized in the table below along with the estimated population within the impact area. The population data was estimated using the Block Uniform Density Group Method in Landview III. The public and environmental receptors are listed in Section 7 of this plan. RMP* Comp Output Results Worst-Cast Scenario Alternative Scenario Impact Radius (miles) 3.0 .40 Estimated Population with Impact Area 1548 120 General Accidental Release Prevention Program The City of Blackwell has implemented a General Accidental Release Prevention Program to minimize releases. This Program includes: safety information on the covered chemicals, hazard reviews, operating and maintenance procedures, training, compliance audits, incident investigations, and emergency response procedures. Five-year Accident History In the last 5 years, there have not been any accidental releases from the covered processes that resulted in deaths, injuries, or si gnificant property damage on site, or known offsite deaths, injuries, evacuations, sheltering-in-place, property damage, or environmental damage. |