Final Closure

Sampling Methods, Sample Analysis, and Area Survey Methodology, 32 Area Sampling and Survey Documentation, 33 Final Closure Survey Report and Closure Certification, 33 Postclosure Monitoring Requirements, 33... 

The JACADS closure activities will involve the dismantling and destruction of that portion of the facility that cannot be decontaminated to meet the 5R cleanliness standard. An area decommissioning matrix delineates the areas that will be decontaminated and dismantled, decontaminated and abandoned in place, or solely abandoned in place (U.S. Army, 2000c). The remaining systems, structures, and components (SSCs) that are left in place must meet the Resource Conservation and Recovery Act (RCRA) criteria for decontamination as well as the Army standard of 5R. Areas that were kept free of any agent or hazardous materials will be sampled to demonstrate their cleanliness in accordance with the final closure sampling and analysis plan. 

FINAL CLOSURE SURVEY REPORT AND CLOSURE CERTIFICATION... 

The final closure reports will be of significant value in closure planning for other sites. In addition, any supplementary reports that are prepared, such as lessons learned, would also be of value. 

INTERIM REMEDIAL MEASURES REPORT TABLE OF CONTENTS FINAL CLOSURE SURVEY REPORT... 

At times, a Catch-22 condition may arise in that regulators can require a finalized closure plan to approve a mine project s startup. However, company management tends to be reluctant to authorize detailed engineering of any facet of a project without prior regulatory approval. 

The presence of additional unsaturation in vinylcyclopropane (56) was invoked as an explanation for its facile nickel(0)-catalyzed rearrangement to vinylcyclopentene (57) in excellent yield (Scheme 12). The geometry of the diene in (56) turned out not to be important as the ring opening led to the equilibration of (E)- and (Z)-isomers prior to the final closure. The reaction was therefore stereoselective, but cyclopentene (57) suffered, in some cases, isomerization to (58) under the reaction conditions. 

Figure 2.9 The formation of a flillerene cage. The tendency toward minimizing the number of unsaturated bonding sites causes the generation of five-membered rings and thus an increasing curvature and final closure of the stmcture to be a cage-like molecule.

Coil wrapped ce. sek—Begin with a core that is subsequently wrapped or coiled with a thin steel sheet until the desired thickness is obtained. Only two longitudinal welds are used, one attaching the sheet to the core and the final closure weld. Vessels 5 to 6 ft in diameter for pressures up to 5,000 psi have been made in this manner. 

ABSTRACT The tidal current is one of the most important factors for closure of a cofferdam in port and coastal engineering. A 3d mathematical model was established to help estimate the hydrodynamic environment in the process of closure of a cofferdam in Caofeidian Harbour. It is shown from simulated results that the model is able to reflect the vertical changes of currents around the project reasonable. The characteristic velocities in final closure from the prediction results were analyzed. Some suggestions were also proposed for the closure of the cofferdam. 

The final closure is located on the middle of the cofferdam (Fig. 2), whose width is 100 m. The protection layer on bottom has been finished, the top elevation of which is -4 m (Fig. 6). The key work of the closure is to fill the 100 m wide gap from -4 m to 1.5 m. There are two situations. One is that the fill is achieved (Fig. 6-(l)) another is that the fill is only half complete (Fig. 6-(2)). The currents in the two situations are simulated by the verified model above. 

Figure 7 and 8 show the currents around the final closure in case 1 and case 2 respectively. It is known that current in the cofferdam is weaker than outside. The current in the closure is strongest. The outside current in flood tide flows from southeast to northwest along the cofferdam one in ebb tide reverses. The directions of currents in closure are perpendicular to that outside in case 1. The case 2 is different. Because of the half fill, the inflow and outflow mainly flow in the unfilled section. So the current in the filled section in case 2 is weaker than that in case 1. 

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