Abstract: A sampling method, fluid collection assembly, and auxiliary sampling device to assist an autosampler in collecting samples from a fluid source. The auxiliary sampling device includes a support frame with a pivot member. A linear actuator having a piston is attached to the support frame. A rotatable sample arm assembly has an upper end attached to the piston and to the pivot member of the support frame, and a lower end with an inlet to receive a fluid sample. A fluid conduit within the sample arm assembly has a fluid intake end connected to the inlet and a fluid discharge end connected to the autosampler. The linear actuator pushes or retracts the piston to vertically pivot the sample arm assembly until the inlet reaches desired positions within the fluid source so that the autosampler collects multiple samples at various depths.

Abstract: A pore-water profiler and method for sampling pore water. The pore-water profiler includes a sample intake probe that receives the fluid to be sampled. A clog-resistant first filter filters the fluid as it enters the sample intake probe. A second filter, which has a pore size less than the pore size of the first filter, filters the fluid a second time before the fluid enters a sample container. A sample triggering system connected to the sample container initiates sampling by causing the fluid to be drawn into the sample intake probe. The profiler provides high-resolution (centimeter-scale) vertical pore-water profiles. The sequential filtration of the pore water avoids the problem of sample-circuit clogging, even in sediments dominated by fine or organic-rich particles. The profiler has all non-metallic, acid-washable components that contact the fluid sample, making the profiler suitable for trace-inorganic studies.

Abstract: A Technology Program Management Model (TPMM) for management of technology development. The TPMM is an activities-based model that is subdivided along technology readiness level (TRL) boundaries into phases of technology development that logically progress from concept to operational capability and readiness for transition to the customer/end user. The TPMM provides a standardized approach to technology development that incorporates systems engineering and programmatic principles and practices with transition management in a stage-gated process for TRL-based maturity assessment. The TPMM includes a relational database that relates the activities to one another, to entry and exit criteria for each phase, and to documentation that demonstrates that the activity meets the requirements of each phase.

Abstract: A level assembly for a wading rod used to measure current flow velocity of a wadable body of water, such as a stream or a river. The level assembly includes a level body that is attached to the hexagonal or depth rod of the wading rod at a desired position using a fastener. The level body has a level indicator to determine whether the wading rod is plumb. An alignment bar is attached to the level body and positioned parallel to a wading tagline to aid in maintaining a perpendicular orientation of the wading rod. The level assembly can be repositioned by loosening the fastener, sliding it up or down the depth rod, and re-tightening the fastener at another desired position. The level assembly is used to maintain a level and perpendicular orientation of the top setting wading rod to the tagline, enabling more accurate flow velocity measurements.

Abstract: A method of and system for removing phosphorus from wastewater using a waste sludge that has a high affinity for phosphorus. In order for the waste sludge to be used in a flow-through contact reactor to remove the phosphorus from a wastewater stream, the waste sludge is pelletized. The waste sludge pellets are packed into one or more flow-through contact reactors. In the configuration described herein, phosphorus removal is maximized by flowing the wastewater through the reactor(s) in a “pulsed” manner, rather than continuously. Thus, wastewater is flowed through the reactor(s) for a period of time and stopped for a period of time. By giving the sludge absorbant a rest period, the absorption capacity of the sludge is increased significantly, thus decreasing the frequency of regeneration or replacement of the sludge. Sludge regeneration can be accomplished with a stripping step using an alkaline solution of pH 13, followed by rinsing with water.

Abstract: A method and device for sampling pore water, including an elongated tubular outer body having a grid framework forming multiple perforations throughout the entire outer body. The grid framework surrounding the perforations has raised and beveled sides. An elongated, perforated tubular inner body is contained within the outer body. The inner body has a diameter less than a diameter of the outer body, which forms a cavity between the inner body and the outer body. The cavity is filled with an inert granular filler material. A first outer cap and a second outer cap cover respective ends of the outer body. A coupling is placed in fluid communication with the inner body and protrudes through the first outer cap. A tube is attached to the coupling protruding through the first outer cap to transfer a water sample to a sample collection site.