The purpose of intrusive engineering investigations as it relates to multifamily buildings is to draw qualitative conclusions about the physical condition of long-lived building systems or systems that are not readily observed without destructive testing or remote sensing. The purpose of an intrusive environmental investigation (aka a Phase II ESA) is to confirm the presence or absence of hazardous materials, the extent of contamination, the liability associated with contamination, and provide a basis for remediation design.
INTRUSIVE PROJECT CAPITAL NEEDS ASSESSMENT (PCNA)
An "intrusive investigation" is an examination appropriate to enhance visual observations of building systems. Intrusive studies rely on standard diagnostic techniques, tools, probes, thermal imagery, and other equipment commonly used by relevant construction trades to evaluate the condition and serviceability of particular building components. D3G's assessment will also include detailed interviews with contractors that have specific knowledge of these building systems. The recommended intrusive investigations differ from one property to another based on type of building construction and date(s) of building construction. The following is a list of possible intrusive studies that are in addition to a typical property assessment (PCNA, PNA, PCR, PIR, etc.):
INTRUSIVE ENVIRONMENTAL SITE ASSESSMENT (a Phase II ESA)
Phase II investigations confirm the presence or absence of hazardous materials, the extent of contamination, the liability associated with contamination, and provide a basis for remediation design. Common Phase II activities include:
- Soil and Groundwater Investigations
- Vapor Intrusion Assessment
- Petroleum Storage Tank Testing
- Lead-Based Paint Studies
- Asbestos-Containing Material Inspections
- Moisture and Mold Evaluations
- Ground Penetrating Radar (GPR) to determine location of USTs, drainage structures, former landfills, etc.