Phase I Environmental Site Case Study

Laurel Environmental Geosciences (Laurel) specializes in conducting Phase I Environmental Site Assessments (ESAs) for various commercial, residential and industrial properties with an array of uses. The final technical reports provided to our clients are comprised of in-depth research as to historical and current usage of the property by reviewing any and all applicable regulatory agency records, conducting a site inspection at the property in question, interviewing any parties with knowledge pertaining to the property, and a comprehensive review of environmental database reports compiled of local, state, and governmental environmental records. Laurel coordinates with property and financial institution representatives to ensure that the client’s time is our foremost concern. Should any additional pertinent information be identified after the report has been provided to the client, an addendum letter is prepared with supporting documentation. Laurel guarantees that our clients will receive comprehensive environmental services in a timely manner.

Laurel has special expertise with commercial and industrial properties registered as hazardous waste generators such as gas stations, auto repair shops, and dry-cleaning facilities. Should a Recognized Environmental Condition (REC) be identified with respect to the property to which there is an environmental hazard that could present a risk to human health and nearby ecological sites, remedial activities may be required. Specifically, gas stations, auto repair shops, and dry-cleaning facilities use petroleum-based or chlorinated solvent-based products, respectively, to perform their daily operations. These hazardous materials can enter the environment if handled improperly. Should sampling be required to confirm or negate the presence of contamination at a property, Laurel is a full-service environmental consulting firm proficient in sample collection and analysis to effectively remediate impacted properties.

Refer to the Phase II ESA section of Laurel’s website for additional information about the range of services that are provided to remediate a site so that it is in full compliance with regulatory standards. Laurel is staffed with the professional expertise to sample and analyze results collected from groundwater, indoor ambient air, sub-slab soil vapor, soil, and Underground Injection Control (UIC) structure samples.

Services Include:

Site History Review

determine what hazardous substances may have been present

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review of federal, state and local databases

determine if the subject site or any sites up to a one mile radius of the subject site are listed

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A site specific study

of the pertinent geologic, hydrogeologic conditions and hydrologic data found at the site

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Written report of findings

clearly lay the groundwork for additional study, if warranted.

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If contamination is discovered, LAUREL can design and optimize an economical mitigation plan that is environmentally sound. In some cases, early implementation of a proactive remedial strategy will permit a property transaction to move forward while a clean-up is in progress.

Phase II Soil / Groundwater Testing

When there is suspicion of contaminated soil or contaminated groundwater at a site, sampling and analysis must be completed to confirm the presence or absence of the suspected contaminants. This is achieved through the installation of groundwater monitoring wells and sampling of soil from cores.

The validity of the results obtained through this sampling relies heavily on the proper placement of monitoring wells and soil borings, though the placement is largely subjective. It is therefore important for a highly skilled scientist to conduct research on site history and visual reconnaissance in formulating a plan, and final decision of proper placement of the monitoring wells and borings to obtain relevant samples.

Whenever possible, LAUREL makes every effort to limit costs, damage to property and especially disruption of business, through the use of the latest state of the art drilling and sampling equipment available.

DATA COLLECTION

Correct media sampling methods are just as important as proper well installations and sampling point decisions. Utilizing the correct sampling equipment and decontamination techniques, LAUREL ensures that no cross contamination has occurred. Without exception, only properly trained and certified staff collect samples.

SOIL BORINGS AND MONITORING WELL INSTALLATIONS

When there is suspicion of contaminated soil or contaminated groundwater at a site, sampling and analysis must be completed to confirm the presence or absence of the suspected contaminants. This is achieved through the installation of groundwater monitoring wells and sampling of soil from cores.

GROUNDWATER/SOIL SAMPLING AND ANALYSIS

Groundwater depths and product thicknesses are determined using an oil/water interface probe. Wells are developed using a bladder pump, to a turbidity (a measure of the silt present in water) of 50 nephelometric units (NTU's), or less to ensure proper hydraulic connection with the surrounding aquifer.

DRINKING WATER SAMPLING AND ANALYSIS

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SLUDGE
SAMPLING

LAUREL has found that septic systems, and industrial and storm water leaching pools are often receptors of significant contamination at any given property. By design, these systems leach as much water as possible into the ground.

GEOPHYSICAL SURVEYS

LAUREL conducts geophysical surveys to aid in the discovery of underground storage tanks, buried drums, fill material, unexposed drywells and large scale subsurface hydrocarbon contamination with no excavation or drilling necessary.

BROWNFIELD REDEVELOPMENT

When there is suspicion of contaminated soil or contaminated groundwater at a site, sampling and analysis must be completed to confirm the presence or absence of the suspected contaminants. This is achieved through the installation of groundwater monitoring wells and sampling of soil from cores.

The validity of the results obtained through this sampling relies heavily on the proper placement of monitoring wells and soil borings, though the placement is largely subjective. It is therefore important for a highly skilled scientist to conduct research on site history and visual reconnaissance in formulating a plan, and final decision of proper placement of the monitoring wells and borings to obtain relevant samples.

Whenever possible, LAUREL makes every effort to limit costs, damage to property and especially disruption of business, through the use of the latest state of the art drilling and sampling equipment available.

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