Gulf Coast samples

The two feeds for which the correlation gave the highest error are heavy, low API, and already preprocessed feed streams. One is DM0 from Gulf Coast and the other is Coker Gas Oil from Mid West. The H-NMR spectra features summarized in Figure 12.3a and b don t provide good clues about any special properties or features of the two feeds that resulted in the highest error for API prediction. One possible explanation for the poor API prediction for these two feeds is that in the analyzed set of feed samples the low API population was underrepresented. 

Gulf Coast Petroleum Refinery. This project involved the cleannp of a crude oil spill in a wetlands area. Costs were estimated to be 2/ft of area treated. Treatment included emergency response mobilization, demobilization, sampling, laboratory analyses, and treatment (D17796C, p. 4). 

Let us take another example. At the U.S. Gulf Coast, the Pleistocene and the Upper Tertiary (Pliocene and Miocene) reach a thickness of more than 6000 meters. Nevertheless, the coaliflcation has only reached the stage of high volatile bituminous at this depth. This observation resulted from our studies of samples from a deep borehole located in Terrebonne Parish, La. By reflectance measurements on humic inclusions in claystones of the uppermost Middle Miocene encountered at a depth of 5440 meters, we obtained a mean value (under oil) of 0.95% reflectance, which is equivalent to the reflectance of vitrinites (out of deep boreholes) with 35-40% volatile matter (daf). On the other hand, we found low volatile bituminous coals (14-16% volatile matter, daf) at a depth of 5100 meters in a borehole in the Lower... 

USA Appalachians West Virginia Raymond (Pittsburgh) coal bed USA Arizona Black Mesa field subbituminous—bituminous 11 samples USA Gulf Coast Texas, Arkansas, and Alabama lignites 141 samples... 

Table II shows the concentrations of selected trace organics in biota samples examined during this study. In general, highest concentrations were observed in the spring. Chlorocarbon concentrations were comparable to other areas along the Gulf Coast and generally lower than commonly encountered along the eastern seaboard ( 9).

Only one detailed study has systematically examined the effects of diagenesis on lanthanide distributions. Chaudhuri and Cullers (1979) analysed Miocene/Pliocene sediments from a deep well (1.8-4.8km depth) in the Gulf Coast of Louisiana, which was sampled through the illite/montmorillonite mixed layer of illite transition. Such variability as was seen in absolute lanthanide abundances and in La/Yb ratios was correlated to changes in provenance rather than to diagenetic factors. 

Stream sediments 1.1 ppm Median of 463 samples from Texas Gulf Coast 2... 

Nine types of trees that grow in Texas from the Gulf Coast, the Central Mineral District, and the northwest corner of the state have comparable uptakes of uranium based on the minimum, median and maximum value in the ash of limbs (Table 4). Both stream sediments and plants (Table 1) have a narrow range of uranium concentrations over a wide range of geologic terrains. Tree samples collected about 5 km apart in two Gulf Coast 1X2° quadrangles accurately defined the uranium province. ... 

Widespread pollution of plastic pellets was identified in US harbors located on the Atlantic, Pacific, and Gulf coasts (Plastic Pellets in the Aquatic Environment 2009). Pre-production pellets were found in 13 out of 14 harbors sampled. The greatest number of pellets was found in the Houston Ship Channel in Houston, Texas, where more than 250,000 pellets were collected in one sample alone. Notably, Houston has one of the greatest concentrations of plastics manufacturing facilities in the United States. 

Fig. 4. Activity diagram for the equilibrium between acetic and propionic acids, as given in Eq. (23), at 100 °C and 300 bar (Shock 1989), showing log(acH3CH2CooH) versus log(flcH3CooH) The solid lines are contours of log(/o2)- oth open and solid symbols represent activities calculated from reported concentrations of acetic and propionic acids in natural brine samples from the San Joaquin and Gulf Coast Basins (Carothers and Kharaka 1978). Solid symbols indicate values for which a correlation with iodide is shown in Fig. 7. (With permission by E.L. Shock and The Geological Society of America)...

The first reports of plastic in the North Atlantic indicated the presence of 50-12,000 particles/km in the Sargasso Sea in 1972 (52) and from 0-14.1 particles per m in coastal waters of southern New England (42), where the main source was river-borne effluents from plastic fabrication plants (44). Plastic objects discarded from boats and from recreational activities on beaches were the main sources of debris in Narragansett Bay, being deposited at a rate of 9.6 g m of beach front per month (53). During a detailed survey off the southeast coast of the United States (43, 54), fragments of plastic were present in about 70% of the samples collected from the waters of the continental shelf, the continental slope and the Gulf Stream between Florida and Cape Cod, 50% of those from the Caribbean Sea, and 60% of those from the Antilles Current. Since unprocessed plastic was more prevalent in continental shelf waters and fabricated objects were common offshore but rare near land, the authors surmised... 

NSP has been reported from the southeastern coast of the U.S., the Gulf of Mexico, and New Zealand (Ishida et al., 1996). Few cases of NSP occur in the U.S. because of comprehensive monitoring programs that periodically sample shellfish and the waters where shellfish are harvested. If shellfish or seawater samples are contaminated with brevetoxins, harvesting is stopped until the shellfish have depurated the toxin and are again safe to eat. 

SauerTC Jr, Durell GS, Brown JS, et al. 1989. Concentrations of chlorinated pesticides and PCBs in microlayer and seawater samples collected in open-ocean waters off the U.S. East Coast and in the Gulf of Mexico. Mar Chem 27 235-257. 

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