More Services


  • Environmental Site Assessment Phase I and Phase II
  • Soil, Groundwater, Surface Water & Sediment Sampling
  • Site Contamination Determination
  • Remediation and Decommissioning Design
  • Remediation Monitoring and Oversight
  • Waste Classification and Disposal Control
  • Authority Liaison
  • Documentation and Recordkeeping

The analysis of the environmental condition and identification of potential contamination on a piece of property is one of the most important steps in a real estate transaction. The likelihood of contamination is usually identified during a Phase I Environmental Site Assessment (ESA).

A more comprehensive investigation is undertaken to determine further details regarding the contamination on site. The process of Phase II ESA involves sampling and assessment of soil, groundwater, and surface water in addition to an assessment of buildings and structures. Depending on the planned use of a piece of land, different environmental criteria are applied in the assessment. Where necessary, an environmental cleanup involving remediation of soil, surface water, groundwater and sediments is undertaken.

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Environmental audits are initiated to evaluate compliance with federal, state, and local environmental regulations. Often, as companies grow and expand operations, compliance issues are overlooked. Our trained and knowledgeable staff can determine areas of your specific operations where governmental compliance is required. It is crucial that top management commitment is in place before the audit is initiated. Audits often entail a pre-audit questionnaire, facility records and documentation review, management and operations staff interviews, and a physical inspection of the facility. Upon completion of the audit, a formal report indicating areas that fall short of compliance is delivered to the client. Often during the audit process, we discover areas where changes in operations or procedures can exempt the client from required governmental compliance. We provide alternatives and recommendations that, if implemented, will provide considerable cost-savings with a short return on the investment. Common areas of compliance are:

  • Pre-Treatment & Discharge
  • Air Emissions
  • Hazardous Waste Treatment, Storage & Disposal
  • PCB Handling & Disposal
  • Pesticide Use
  • Chemical Storage & Handling
  • Asbestos Classification & Management
  • Solid Waste Disposal
  • Record keeping
  • Emergency Response Plans
  • Safety & Training Policies
  • Permit Compliance Activities
  • Spill Prevention, Control, and Countermeasure (SPCC) Plans
  • Storm Water Pollution Prevention Plans (SWPPP)
  • Expert Witness / Litigation Support

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An integral component of today’s business structure often includes environmental management systems. DS Environmental can identify areas of client operations where environmental management plans are needed to ensure the health and safety of workers, protect the environment, comply with regulations, and safeguard against costly fines.Our written plans are tailor-made to fit each client’s specific needs and are user-friendly and easily implemented.Common plans include:

  • Spill Prevention Control & Countermeasures
  • Storm Water Management
  • Asbestos Operation & Maintenance
  • Hazardous Waste Management

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DS Environmental is a participant in the Industrial Hygiene Proficiency Analytical Testing (IHPAT) program with laboratory (ID No. 188987). Our Air Monitoring Specialists all have NIOSH 528 equivalent certifications to analyze for airborne asbestos fibers via PCM, allowing us offer on-site, or off-site, PCM analysis for asbestos projects.

Phase contrast microscopy (PCM) analysis (NIOSH method 7400) is a technique used for determinations of airborne asbestos fibers. An air sample for PCM analysis is collected on a filter medium which is dissolved during sample preparation so that the collected particulate can than be viewed under the microscope.

Phase contrast microscopy is often used for analysis of samples for airborne asbestos fibers. The sample is collected on a mixed cellulose ester membrane (MCEM) filter with a 0.8 mm (micron) pore size. MCEM filter is then cleared with a chemical solution and the collected fibers are counted under the 400X magnification. All fibers longer than 5 mm, wider than 0.25 mm and of aspect ratio of 3:1 or greater are enumerated. The airborne fiber concentration is obtained from the microscopic count and air sampling data.

The PCM analysis is fast and inexpensive and DS Environmental can performed this on site during asbestos removal operations for fast turnaround. Inability to distinguish between the asbestos and non-asbestos fibers is the main disadvantage of PCM. Therefore all fibers that meet the counting criteria are counted as asbestos fibers. Where precise determining of airborne asbestos fibers is needed transmission electron microscopy (TEM) should be used. Air sampling for the determination of airborne asbestos and phase contrast microscopy analysis is fully described in the NIOSH analytical method 7400.

Call us at (303) 286-9094 for more information!