The phrase "acid seepage" is correct and usable in written English.
It can be used in contexts related to environmental science, chemistry, or discussions about pollution and contamination.
Example: "The investigation revealed significant acid seepage from the abandoned mine, posing a threat to the local water supply."
Alternatives: "acid leakage" or "acid discharge".
The weir affected 60% of drainage network and observed and modelled data suggest acid flux from groundwater seepage was reduced by about 65 70%.
The high levels of these metals in groundwater might be linked to seepage of acid mine drainage into the aquifer and possible contaminations from pitting exercise during the gold mining operation (Frank, 2013).
High hydraulic conductivity (>120 m per day) in the sulphuric horizons due to extensive macropores, combined with tidal modulation of drain water levels encouraged rapid seepage of acid groundwater.
Secondary effects include spontaneous combustion of the coal worked, as air has been provided with ready access to the mine, accelerated subsidence due to the strength of many pillars being reduced by burning, and a marked deterioration of groundwater quality in the area due to the seepage of acid mine drainage from the mine.
The findings come as no surprise, since acid reflux -- the seepage of stomach acids and other contents into the esophagus -- frequently occurs side by side with asthma or stress, including post-traumatic stress disorder (PTSD).
Covering 64 acres (26 hectares), the caverns, discovered in 1878, were formed millions of years ago by underground rivers and seepage of acid-bearing water through layers of limestone and clay.
Acid flux rates from groundwater seepage were strongly positively correlated to effluent groundwater hydraulic gradients.
However, chemical degradations and mechanical failures induced due to the reaction with supercritical (Sc) CO2 and carbonic acid under reservoir conditions may create leakage paths in the cement, causing seepage of CO2 to the surface and other valuable subsurface resources (Xu et al. 2007; Bachu and Bennion 2009; Zhang et al. 2013; Ansarizadeh et al. 2015).
Prior to weir construction, groundwater seepage to the ditch drain was the main hydrological pathway for acid flux.
This study demonstrates that a weir can be an effective means of reducing acid flux in coastal acid sulphate soils where main hydrological pathway of acid export is groundwater seepage.
