Number of times per year when the Thames Barrier was closed to avoid a risk of flooding. Specific Indicator The Thames Barrier is closed when high water levels at Southend and the flow of the River Thames at Teddington Weir (the tidal limit of the Thames) reach critical levels.The specific indicator is the number of times per year that the Thames Barrier is closed to avert a risk of flooding.[Source:Environmant Agnecy, Thames Barrier, Eastmoor St., Charlton, London SE7 8LX]. Relevance The Thames Barrier was commissioned in 1982 and cost ,530 million.It was designed to provide protection for London from tidal flooding until 2030 (and, by raising the gates, beyond). Over 150 km2 of London lies below high tide level and the homes of 750,000 Londoners are at risk from a major storm surge.urrently, the major flood threat to central London is from storm surges-when meteorological conditions (primarily atmospheric pressure and wind) exaggerate tidal peaks. Global warming and the resulting rise in sea levels (involving both thermal expansion and contributions from ice melt) will increase this risk.
The IRS mileage reimbursement rate is an optional rate, recommended by the Internal Revenue Service in the U.S., that is used to calculate the deductible costs of operating an automobile for business, medical, charitable, or moving to a new home reasons.
Sometimes employees are required to use their own vehicles for work-related travel. This, of course, excludes traveling to and from work. Employers are required to reimburse employees for their mileage. Every year, the IRS specifies a rate at which employees can be refunded their mileage-related costs. The mileage reimbursement rate intends to cover the costs of operating a motor vehicle for business purposes. Mileage reimbursement offers benefits to both employers and employees. It encourages employees to make more business trips and support their companies without worrying much about the accrued mileage costs.