Project helps open Pennsylvania freeway
April 1, 2009
…in construction, more than 600,000m3 of iron pyrite rock were excavated. When iron pyrite is exposed to air and precipitation, the potential for acidic runoff or acid rock drainage (ARD)…
Found 405 results.
April 1, 2009
…in construction, more than 600,000m3 of iron pyrite rock were excavated. When iron pyrite is exposed to air and precipitation, the potential for acidic runoff or acid rock drainage (ARD)…
April 1, 2009
…purify water runoff. Instead of hauling contaminated soils offsite to a landfill, MKA developed a 3-ft-deep clean soil cap formed into a spectator viewing platform, ensuring spectator safety while also…
April 1, 2009
…The liner is at the Kittilä Gold Mine in northern Finland. By Bertrand Breul, Mikko Huru, Anton Palolahti Abstract This article will describe the mine in general, including…
February 1, 2009
…all runoff from the roofs and surrounding site is collected in a network of laterals. Runoff from the upper portion of the site flows directly through a filter into the…
February 1, 2009
…stadium’s stormwater system is designed to multitask — storing, filtering, and discharging stormwater runoff. The drainage area served by the system at the stadium site (3.75 acres) is 7 times…
February 1, 2009
…The founders of this rural parish also plotted a cemetery adjacent to the chuch and even closer to the overlook of the Chippewa’s south bank as the river, indeed, makes…
October 1, 2008
…From the GMA Techline Subject: Rub sheets— What kind of developments are going on these days with rub sheets in leachate sumps with sideslope risers? I’ve seen multiple…
October 1, 2008
…-1 is more than 0.10, there is a sufficiently oxidized surface layer that stress cracking might be initiated. For those familiar with the two slope stress rupture curve (Figure 1)…
August 1, 2008
…a series of storm chambers that will convey water underground, or in cases of heavy rain or runoff, store the water in the underground chambers for later release. These chambers…
June 1, 2008
…and transmissivity, and how they are affected by different gradients that may result in laminar vs. turbulent flow. It is not at all incumbent on a designer to run a…