Underground Storage Tank Investigation and Remediation at a Heating Plant, Chicago, Illinois

Mr. Green designed and performed a phased subsurface soil and groundwater investigation demonstrating the extents of polynuclear aromatic hydrocarbon (PNA/PAH) impacted soil and groundwater, associated with a release from a 20,000-gallon underground heating oil storage tank. This work was complicated by the presence of cinder fill material that also contained PNAs/PAHs, a 14-inch underground steam line, optical data cables, sewers, four (4) other tank systems and two (2) utility tunnels.

Mr. Green prepared a three-dimensional computer model of the site facilities demonstrating the presence of a third source of PNAs/PAHs in the soil, of an undetermined origin, that was physically separate from the five (5) regulated 20,000-gallon underground heating oil storage tanks. This sophisticated modeling was necessary as the tank impacted soil, the cinder fill material and the third source of an undetermined origin, all contained PNAs/PAHs, although in somewhat different concentrations. Mr. Green left the soil impacted by an undetermined source in place, then managed the cinder fill material as a separate waste distinct from the soil impacted by the release from the 20,000-gallon heating oil storage tank, saving the client greater than $1 million in remediation costs.

Mr. Green provided field management during the removal of five (5) 20,000-gallon underground storage tanks and the excavation, transportation and disposal in a permitted landfill, of approximately 3,000 cubic yards of soil impacted with PNAs/PAHs. Mr. Green also managed the design, installation and operation of a groundwater pump and treatment system, and coordinated its operation with the design, installation and operation of the site de-watering system. Closure sampling, designed and managed by Mr. Green, demonstrated that the impacted soil and groundwater were successfully removed. Mr. Green also provided field management during the installation of three (3) 35,000-gallon underground storage tanks.

Mr. Green prepared a Corrective Action Completion Report that was approved by the Illinois EPA. This report contained three-dimensional modeling of the site to differentiate the soils impacted by the UST release from the release of undetermined origin, and also from site fill material that contained cinders and building materials from the early 20th century.

RCRA Investigation and Remediation, Northeast Illinois

Mr. Green designed and performed Resource Conservation and Recovery Act (RCRA) soil and groundwater investigations and Closure activities at an outdoor RCRA container storage unit (concrete pad) at a former ink manufacturing facility located in Niles, Illinois. Having reviewed the results of previous subsurface investigations performed by others, Mr. Green performed two (2) soil and groundwater investigations that demonstrated the vertical and horizontal extents of chlorinated solvent and polynuclear aromatic hydrocarbon impacts. These investigations were greatly complicated by the presence of numerous buried utilities.

Mr. Green prepared a RCRA Closure Plan that successfully demonstrated the efficacy of microorganisms to remediate approximately 5,000 cubic yards of soil impacted with chlorinated solvents, without leaving vinyl chloride as an end product. Upon completion of the bioremediation, performed by a subcontractor, Mr. Green collected soil and groundwater closure samples demonstrating that the constituents of concern were remediated to concentrations below their respective clean-up objectives. In the final phase of the project, Mr. Green prepared a RCRA Closure Documentation Report that was approved by the IEPA.

Investigation and Remediation of a Former Underground Storage Tank Field, Northeast Illinois

At an ink manufacturing plant in Northern Illinois, Mr. Green performed soil and groundwater investigations, and leaking underground storage tank (LUST) closure activities at two (2) former underground tank fields of 30 USTs. Having reviewed the results of previous subsurface investigations performed by others, Mr. Green performed one (1) soil and groundwater investigation and four (4) quarters of groundwater monitoring that demonstrated the vertical and horizontal extents of non-chlorinated solvent impacts. Upon completion of a bioremediation treatability study of the site soil, performed by a subcontractor, Mr. Green prepared a Corrective Action Plan that was accepted by the Illinois EPA, demonstrating the efficacy of the method to treat non-chlorinated solvents using aerobic microbes and nutrient augmented water with compost, to treat approximately 2,600 cubic yards of unsaturated and saturated soil.

Six weeks after the completion of the application of the bioremediation materials, performed by a subcontractor, Mr. Green collected soil and groundwater samples that demonstrated that the constituents of concern were remediated to concentrations below their respective clean-up objectives. Mr. Green then prepared a Corrective Action Completion Report that was approved by the IEPA.
Investigation, Underground Tank Removal and Risk-Based Remediation of Chlorinated Solvents, Indianapolis, Indiana

Mr. Green designed and performed subsurface investigations to assess the extent of soil and groundwater impacted with solvents associated with a leaking underground tank at a printing press service facility located in Indianapolis, Indiana. The investigations included drilling 21 soil borings and the installation and sampling of six (6) groundwater monitoring wells as deep as 200-feet. Mr. Green managed the removal, cleaning and disposal of the leaking underground tank and its contents.

Risk-Based Closure activities performed by Mr. Green include fate and transport modeling of two (2) chemicals of concern using Visual MODFLOWâ, MT3D®, and AutoCADD 14â. The fate & transport modeling performed by Mr. Green demonstrated that plumes of the chemicals of concern in groundwater would stabilize within 100-years, and would not migrate off-site or down to the usable aquifer within 1,000-years. This modeling effort enabled the client to proceed with a risk-based site closure, saving more than 20% compared to proposed active treatment options.

Investigation Chlorinated Solvents & PNAs/PAHs in Soil and Groundwater, Miami, Florida

Mr. Green designed and performed sub-surface soil investigations demonstrating that soil remediation and closure sampling performed by others (in 1990) failed to achieve clean-up objectives. The site soil and groundwater were impacted with solvents associated with a former drain field that was located outside the building at this printing press service facility located in Miami, Florida. The soil investigations included 21 soil borings inside and outside the subject building, through sand to the bedrock at 40 feet. Mr. Green also managed site surveying, groundwater sampling and waste disposal activities. Groundwater samples were collected from 12 existing monitoring wells to depths of 150 feet. Mr. Green managed the installation of three (3) additional groundwater monitoring wells in the shallow sand unit.

Mr. Green performed data analysis and prepared 2-Dimensional contour maps of site ground surface, groundwater flow, bedrock surface and chemical distribution in shallow groundwater, using Surfer® and AutoCADD 14®. Mr. Green also prepared a 3-Dimensional computer model of benzene in site soil using 80 data points, in VOXEL® and MicroStation®. The three-dimensional computer model demonstrated the orientation of three (3) benzene plumes in the site soil. An evaluation of remedial alternatives is currently being performed for this project.

Fast-Track Investigation of a Printed Circuit Board Manufacturing Plant, Southern California

Mr. Green designed and performed a fast-track sub-surface soil and groundwater investigation demonstrating the extent of on-site impacts by chlorinated solvents, associated with a site process water treatment system. This project included the performance of eighteen soil borings, installation, development and sampling of eight (8) monitoring wells to depths of 100 feet or more, and rush analysis of 75 soil and groundwater samples for chemical and geotechnical parameters. The investigation was performed in three (3) phases. Mr. Green performed data analysis and prepared 2-dimensional models of ground surface, groundwater flow, aquitard surface, vertical and horizontal chemical distributions in the subsurface, using Surfer®. Mr. Green completed all tasks including preparation of one (1) interim report and a final investigation report all within 60 days of initial client contact.

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