The Scottish Environment Protection Agency (SEPA) has been in attendance at the site of the spill at Queensferry since yesterday morning (14 November).
The new Airborne Hazards Emergency Response (AHER) service, which was launched officially in Edinburgh this morning, was deployed at the site at 16.30 yesterday afternoon, following reports of an odour in the area.
The odour was due to the release of very low levels of Hydrogen Sulphide into the air, AHER was able to analyse the quantities of gas in the atmosphere and confirm that while levels were enough to cause an odour, they were below levels that would be a risk to human health. The levels detected are decreasing.
The vehicle remained on site until 22.00 last night collecting information, which was passed on to Health Protection Scotland so they could provide advice and guidance to NHS Lothian on public health matters.
AHER arrived back on the scene at 7.30 am today and will continue to collect data and provide it to partner agencies over the course of the day. Levels as mentioned are lower than yesterday.
SEPA officers are on site and are taking samples of the discharge today so chemical analysis can be carried out. This will enable us to determine what impact the discharge may have had on the environment.