Field-scale demonstration of induced biogeochemical reductive dechlorination at Dover Air Force Base, Dover, Delaware.

Biogeochemical reductive dechlorination (BiRD) is a new remediation approach for chlorinated aliphatic hydrocarbons (CAHs). The approach stimulates common sulfate-reducing soil bacteria, facilitating the geochemical conversion of native iron minerals into iron sulfides. Iron sulfides have the ability to chemically reduce many common CAH compounds including PCE, TCE, DCE, similar to zero valent iron (Fe(0)).

Assessment of biogeochemical natural attenuation and treatment of chlorinated solvents, Altus Air Force Base, Altus, Oklahoma.

Biogeochemical reductive dechlorination (BiRD) is a newly recognized method for the remediation or natural attenuation of chlorinated solvents. Chlorinated solvents are rapidly treated by abiotic reaction with reduced mineral iron sulfides. Iron sulfides are formed by naturally occurring sulfate-reducing bacteria when sufficient SO(4)(2-) and organic carbon are present or supplied to sediments containing mineral iron.

Curbside Collection of Recyclable Material: Simulation of Collection Activities and Estimation of Vehicle and Labor Needs.

This paper presents a mathematical model that can be used to estimate the time required to collect recyclable material (route time) by simulating the activities of a collection vehicle driving over its route. Data obtained by observing the collection of recyclable material in The Village, OK, were used to determine parameters for the model. The validity and robustness of the model were tested by comparing model-predicted route time to observed route time.