The great differences in AWT planning among the States do not relate to great differences in water quality or to pollution problems; rather, the differences must be traced to enormous disparities in water-quality stan- dards, implementation plans, State laws and regulations, and perceived needs for treatment works. Until these two defects have been worked out, the Federal grant program may be legitimately charged with hidden favoritism, unfairness, noncompliance with P. Meanwhile, Federal funds can be put to good use by building more secondary plants, correcting problems in sewer systems, and in some instances treating urban stormwater. Section , which covers water- quality standards and wasteload' allocations, does not produce technically credible planning. These conclusions and recommendations were derived from six detailed case studies, selected in cooperation with EPA Regional Offices and State pollution-control agencies as outstanding examples of AWT plan- ning. Nearly every other example of AWT planning in the U.
Simulation of multiphase flow in heterogeneous two-porosity reservoirs such as naturally fractured systems is a difficult problem. In the last several years much progress has been made in this area. This paper focuses on progress has been made in this area. This paper focuses on the practical aspects of that technology. It describes a stable, flexible, fully implicit, finite-difference simulator in heterogeneous, two-porosity reservoirs.
The site is owned by the San Francisco Water Department , which vigilantly limits public access to its watershed lands in the name of protecting the environment from degradation. It would be nice if the water department had been as vigilant about this piece of land, a acre rectangle of lead-polluted marshland next to the San Francisco Bay in Menlo Park that has been under a state cleanup order since The cleanup order has yet to be fulfilled, according to state and water department officials, who now are scrambling to bring about compliance. What looks like lava on the site is actually layers and layers of broken shards of clay, sprinkled colorfully with thousands of plastic empty shotgun shells -- the debris from nearly 30 years of skeet-shooting at what had been the Peninsula Sportsmen's Club, a private club for shotgun aficionados that left the site, and disbanded, in
Regret for the inconvenience: we are taking measures to prevent fraudulent form submissions by extractors and page crawlers. Received: September 15, Published: January 13, Ecological zoning for wheat production at province scale using geographical information system. Adv Plants Agric Res.