Lot 21 Webster Road, Forrestfield has an area of 1.84 ha and is located in the Shire of Kalamunda. It is zoned Industrial in the Metropolitan Region Scheme and Light Industry in the Shire of Kalamunda District Planning Scheme No. 2. Lot 21 is adjacent to, but not included in, Bush Forever Site 319.

An application to subdivide Lot 21 Webster Road, Forrestfield into seven industrial lots was initially referred to the EPA pursuant to Section 38 of the Environmental Protection Act 1986 (EP Act) in April 1997.

The level of assessment was set at Informal Review with Public Advice (IRPA) but later upgraded to Consultative Environmental Review on appeal to the Minister. However, the proponent withdrew the application in November 1997. A second subdivision application was referred to the EPA and the level of assessment was again set at IRPA on 10 March 2000. Three appeals were made against the EPA’s decision on level of assessment in March 2000. In October 2000 the Minister for the Environment upheld the appeals and directed the EPA to formally assess the proposal pursuant to Part IV of the EP Act.