What is asset management? How do road administrations achieve an integrated approach to asset management? How does this differ from the management of individual assets? What are the implications for data collection and management? What does it mean for road administrations and road sector...

This Test Guideline describes a method which is an adaptation of the Soap and Detergent Association semi-continuous activated sludge (SCAS) procedure for assessing the primary biodegradation of alkyl benzene sulphonate. The test does not simulate those conditions experienced in a sewage...