SLUDGE SAMPLING

Sludge sampling is the collection of bottom lying sediments from structures such as sanitary systems, drywells, leaching pools, and industrial storm drains. These structures are designed to leach liquid into the ground and as a result, any contaminants in the liquid can contaminate the soil. An on-site Photoionization Detector (PID) analysis of the soil samples can give an initial indication of volatile organic contamination. Laurel uses this field test to aid in selecting hot samples from a site suspected of having volatile organic contamination, thereby cutting down the costs of laboratory analysis. The samples that have been selected for analysis are sent to a National Environmental Laboratory Accreditation Program (NELAP) qualified laboratory and analyzed for the associated chemicals of concern. Laurel receives the laboratory data, analyzes the results, and concludes appropriate recommendations. To avoid elevated levels of contaminates within the structures Laurel recommends routine maintenance and sampling of these leaching pools at commercial and industrial properties in our Environmental Site Assessments (ESAs).

Due to Laurel's wide-range of capabilities, if there is contamination discovered within a sampled structure, Laurel's team of experienced senior geologists and environmental scientists work together to create a cost-effective remediation plan. The remediation plan will clean any impacted soils while not disrupting active businesses.

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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