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A transformer was found adjacent to the shed. This transformer, containing 80 kg of 0.5% (w/w) of the PCB Aroclor 1260 has ruptured, resulting in a spill approximately 5 cm deep in an area 12m x 10m. If the soil bulk density is approximately 1800 kg/m³, estimate the PCB soil concentration (mg/kg).

A transformer was found adjacent to the shed. This transformer, containing 80 kg of 0.5% (w/w) of the PCB Aroclor 1260 has ruptured, resulting in a spill approximately 5 cm deep in an area 12m x 10m. If the soil bulk density is approximately 1800 kg/m³, estimate the PCB soil concentration (mg/kg).

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Background (adapted from US EPA CERI-89-11) The operations at an industrial waste complex have contributed to a seven-acre hazardous waste disposal area located on the site. Figure 1 represents the general layout of the industrial complex. Site Description The site geological setting, as determined from existing surveys of the area is: Surface layer at the site is a sandy soil with a high permeability and a depth of 3 -5 ft. The subsurface has been characterized as a silty sandy clay that is moderately permeable and has a depth of approximately 30 feet. The depth to groundwater from the surface averages 30 feet across the site, and the depth to bedrock is approximately 65 feet. Groundwater flow is towards the east. The bedrock consists of an impermeable limestone. The climate in this area is very humid and has an average temperature of 72°F and an annual precipitation of 53.4 inches. The high and low temperatures in January are 74°F and 49°F and in August are 92 °F and 72°F, respectively. Underground Storage Tank An underground storage tank containing dioxane was found to be leaking. The estimated volume of contaminated soil beneath the tank is 410 cubic yards (approximate size is 45 ft x 25 ft x 10 ft). Soil below the tank was found to have a contaminant concentration of 50 mg/kg. Storage Shed The soil around the storage shed appears to be contaminated with the material contained in several drums and containers of varying sizes. One container labeled "gasoline" was found outside of the shed and is severely corroded and is now empty. Factory Pipe Line nderground I štorage Tank (usr) aays Parking Area Figme !. Indistrat Complex (-NOT - To- SCALE -)
Transcribed Image Text:Background (adapted from US EPA CERI-89-11) The operations at an industrial waste complex have contributed to a seven-acre hazardous waste disposal area located on the site. Figure 1 represents the general layout of the industrial complex. Site Description The site geological setting, as determined from existing surveys of the area is: Surface layer at the site is a sandy soil with a high permeability and a depth of 3 -5 ft. The subsurface has been characterized as a silty sandy clay that is moderately permeable and has a depth of approximately 30 feet. The depth to groundwater from the surface averages 30 feet across the site, and the depth to bedrock is approximately 65 feet. Groundwater flow is towards the east. The bedrock consists of an impermeable limestone. The climate in this area is very humid and has an average temperature of 72°F and an annual precipitation of 53.4 inches. The high and low temperatures in January are 74°F and 49°F and in August are 92 °F and 72°F, respectively. Underground Storage Tank An underground storage tank containing dioxane was found to be leaking. The estimated volume of contaminated soil beneath the tank is 410 cubic yards (approximate size is 45 ft x 25 ft x 10 ft). Soil below the tank was found to have a contaminant concentration of 50 mg/kg. Storage Shed The soil around the storage shed appears to be contaminated with the material contained in several drums and containers of varying sizes. One container labeled "gasoline" was found outside of the shed and is severely corroded and is now empty. Factory Pipe Line nderground I štorage Tank (usr) aays Parking Area Figme !. Indistrat Complex (-NOT - To- SCALE -)
A transformer was found adjacent to the shed. This transformer, containing 80 kg of 0.5% (w/w) of the PCB Aroclor 1260 has ruptured, resulting in a spill approximately 5 cm deep in an area 12m x 10m. If the soil bulk density is approximately 1800 kg/m³, estimate the PCB soil concentration (mg/kg).
Transcribed Image Text:A transformer was found adjacent to the shed. This transformer, containing 80 kg of 0.5% (w/w) of the PCB Aroclor 1260 has ruptured, resulting in a spill approximately 5 cm deep in an area 12m x 10m. If the soil bulk density is approximately 1800 kg/m³, estimate the PCB soil concentration (mg/kg).
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