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Arsenic Treatment Technologies for Soil, Waste, and Water
EPA 542-R-02-004, 1 Volume + 2 Appendices, 2002
Contact: Linda Fiedler, fiedler.linda@epa.gov
Appendix A: Literature Search Results (367K/PDF)
Appendix B: Sites with Arsenic as a Superfund Constituent of Concern (137K/PDF)

This report summarizes information on 13 technologies used to treat arsenic: in situ soil flushing, solidification/stabilization, vitrification, soil washing/acid extraction, pyrometallurgical treatment, electrokinetics, and phytoremediation for soil; precipitation-coprecipitation, membrane filtration, adsorption, ion exchange, permeable reactive barriers, and biological treatment for water.

Speaking of fire suppression, we've opted for the newer technology of "Ecaro25" for this new facility.

Ecaro25, like FM200, is a non-lethal gas which performs the task of fire suppression without any damage to equipment. Our facility is rigged with a pre-action water system as well, which means that it is plumbed with water sprinklers, but their pipes are dry. In the case of an actual fire the Ecaro25 system seals the room and discharges the gas, only if this fails will the sprinkler system be charged with water. Building code requires the sprinklers be present, but we have mitigated the risk of their discharge by installing the Ecaro25 system as the first line of defence. It is a very cool system, and serves as an excellent safety net for your investment in equipment.
Chuck Goolsbee
V.P. Technical Operations
digital.forest

. For some 2,000 years, this hulking aqueduct brought potable water to the city from the Frio River, 16 km (10 mi) away.

The water flows through an underground channel until it reaches the freestanding section of the aqueduct. This consists of 166 arches, supported by 120 pillars, which cover a distance of 1 km (.6 mi). Divided into two tiers, the arches rise to a height of 28 m (100.5 ft), ending at the Plaza Azoguejo. The 20,400 granite massive blocks of the aqueduct are laid without mortar or metal clamps. They are held together by the pressure of the keystones - a perfect equilibrium of forces.

The two-tiered part of the aqueduct is known as 'bridge of the Devil'. According to popular legend, the aqueduct was almost built in a single night by the Devil, trying to win, in the darkness, the soul of Juanilla - a sleeping Segovian water-seller. Jolted by an inner feeling, she awoke to find that the aqueduct was almost complete. To save her soul, she fervently prayed to the Virgin Mary. The Virgin answered her prayers and made the sun rise earlier to foil the Devil's plans. Hence, she saved her soul since the Devil did not complete the aqueduct. However, legends aside, the aqueduct is a work of exceptional beauty, giving Segovia a unique aura.

# Drink at least 16 oz. of water two hours before exercise
# Drink at least 8 oz. of water one hour before exercise
# Drink at least 4 to 8 oz. every 15 to 20 minutes during exercise
# And, drink at least 16 oz. of water after your exercise

THE Definitive Solar Technical Manual
Solar Hot Water Systems:
Lessons Learned
1977 to Today

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