Louisiana offshore terminal authority environmental monitoring
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2002-09-01
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By Barry A. Vittor & Associates ...
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Alternative Title:LOUISIANA OFFSHORE TERMINAL AUTHORITY ENVIRONMENTAL MONITORING, 2001-2002 MARINE/ESTUARINE
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Abstract:The current Louisiana Offshore Oil Port (LOOP) monitoring program includes seasonal monitoring of aquatic and marine resources, sediment composition, and water quality on a five-year cycle. These data provide an update to the existing long-term LOOP dataset that was collected annually from 1979 to 1994, as well as a measure of natural environmental variability in the project area. The monitoring program was designed to identify environmental impacts that could occur due to offshore vessel operations (at the Single-Point Mooring and Terminal Complex), brine discharge, storage facility operations, and pipeline construction and operation. Inshore benthic samples were collected utilizing a 0.023 sq m Ekman grab sampler. Five replicates were collected at each inshore Lake Jesse and Clovelly station. Offshore samples were collected with a 0.1 sq m Smith-McIntyre grab sampler. There were six replicates collected at each station adjacent to the LOOP brine diffuser and seven replicates collected at each station in the area of the LOOP Marine Terminal Complex (offshore). Samples were collected during August and November 2001 and June 2002. Environmental data and hydrographic profiles were conducted in conjunction with the benthic sampling. Sediment core samples were collected at the inshore benthic stations using a Barret-type coring device. Sediment core samples collected at the offshore benthic stations were collected using a Smith-McIntyre Grab sampler. Samples were analyzed for Polynuclear Aromatic Hydrocarbons (PAH) and grain size (percent gravel, sand, silt, clay). Results of all data collection and analyses are presented in this report.
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