Phase 2 Environmental Site Assessment

Phase 2 Environmental Site Assessment

Textiles Factory, Samut Prakarn, Thailand

SLP Environmental was appointed to conduct and report a Phase 2 Environmental Site Assessment (Phase 2 ESA) at an operational textile manufacturing facility located in Samut Prakarn, Thailand. The client was considering the acquisition of the property and the study was commissioned as part of the clients ongoing pre-acquisition due diligence process. SLP prepared a Phase 1 ESA for the subject property which identified Recognised Environmental Conditions (REC) and SLP was appointed to conduct the Phase 2 ESA to determine if current or historical activities at the subject property had resulted in soil or groundwater contamination and a potential environmental liability.

The Phase 2 ESA was conducted in accordance with practice presented in ASTM E1903 -11: Standard Practice for Environmental Site Assessments: Phase II Environmental Site Assessment Process.

SLP developed the Statement of Objectives for client approval and subsequently designed an intrusive site investigation that targeted the likely release areas identified during the Phase 1 ESA. The scope of works included concrete coring followed by the rotary boring of four exploratory holes across the study site to depths ranging from 6 to 8m below ground level (bgl) and the recovery of soil samples for analysis at an ISO17025 accredited environmental testing laboratory.

Temporary groundwater monitoring wells were installed in the soil bores which were developed and purged in accordance with industry good practice. In-situ field monitoring for parameters such as pH, EC and dissolved oxygen was followed by the collection of groundwater samples using dedicated Teflon bailers. A wellhead position and elevation survey was undertaken to determine the hydraulic gradient in the shallow aquifer and strict QA/QC procedures were followed throughout the study.

The laboratory test results were compared with Thai and US EPA Tier 1 Screening Values to determine the contamination status of the property. The Phase 2 ESA report provided a full record of the works with clear conclusions, recommendations and an updated environmental risk rating for the subject property.