Many power plants have sediment retention ponds that require control of pH for the effluent. The following guidelines for fossil plant sediment pond pH control will help you design a robust system while staying within budget.

Development of a $3.2 billion circulating fluidized bed (CFB) petroleum coke–fired power plant proposed for construction in Corpus Christi, Texas, was suspended last week. Chase Power Development, parent company of the 1,300-MW Las Brisas Energy Center, cited market conditions and regulatory obstacles for its decision.

The U.S. Court of Appeals for the D.C. Circuit last week declined petitions for rehearing en banc of the Cross-State Air Pollution Rule (CSAPR). The federal court’s denial of the petitions leaves in place the Clean Air Interstate Rule (CAIR)—a Bush-era rule that the court had formerly invalidated in July 2008 and then reinstated. It also could prompt environmental groups, 15 states, and the Environmental Protection Agency (EPA) to take their case to the U.S. Supreme Court.

Mississippi regulators last week approved a settlement with Mississippi Power that will allow the Southern Co. subsidiary to seek higher customer rates for rising costs associated with its 582-MW Kemper integrated gasification combined cycle (IGCC) plant under construction in Kemper County. On the day following that ruling, the utility asked the state for permission to recover $172 million for the 2013 regulatory year.

A settlement agreement reached with environmental group the Sierra Club last week may mean that Iowa’s largest utility, MidAmerican Energy Co., will switch 674 MW of coal-fired capacity to natural gas or other fuels by April 2016.

Next Generation Nuclear Plant (NGNP) Industry Alliance last week announced that it had received a $1 million award from the U.S. Department of Energy (DOE) for a 50/50 cost-shared contract to continue business and economic analysis for using high-temperature gas-cooled reactor technologies (HTGR).

The UK’s process to site a deep geological repository for radioactive waste in West Cumbria screeched to a halt on Wednesday after the Cumbria County Council’s Cabinet decided that the region should no longer be considered as a potential location to host the facility, even though the local government of the borough of Copeland voted in favor of the plans.

A German tax court on Tuesday ruled that the country’s excise tax on nuclear fuel levied since January 2011 is unconstitutional and lacks legal competence. The matter now proceeds to the Federal Constitutional Court, which alone has the jurisdiction to rule on the invalidity of the law.

A year after the beleaguered San Onofre Nuclear Generating Station (SONGS) was shut down owing to issues identified in the steam generator tubes of the plant’s two units, the Nuclear Regulatory Commission (NRC) announced tentative milestones for its independent review. The federal agency now projects that a possible decision regarding restart of Unit 2 could come in late April.

Average spot natural gas prices in New England have surged to $3 per million British thermal units (MMBtu) higher than natural gas prices at the Henry Hub since November, driven up by supply constraints from natural gas pipelines that haven’t kept up with demand, high international prices, and declining production in eastern Canada, the U.S. Energy Information Administration (EIA) says in a report released last week.