Targus was engaged to provide technical project support and professional staffing for assessment services related to the redevelopment of an areas of Fort Worth slated for redevelopment in connection with redirecting and protecting portions of the downtown Trinity River floodplain. One of the areas to be redeveloped was a recently-abandoned police and firefighter training facility.
This facility was constructed on a former auto scrap yard and included outdoor and indoor firing ranges and cement pads for fire suppression training. Over a period of decades the storage and combustion of unspecified oil waste mixtures and discharges of lead projectiles contributed to underlying contamination. Soil was found to have been affected by lead (largely in the surface, but also at depth in excavation areas and in the underlying salvage yard soil). Lead was also present in interior and exterior building materials. Soil and groundwater were affected by incomplete combustion residues, including semi-volatile organic compounds (SVOCs) and other miscellaneous contaminants. As a result of widespread contamination, the subject property and surrounding area had previously been designated as unsuitable as a groundwater resource through a TCEQ municipal setting designation (MSD).
Targus’ services were initiated with compilation of years of prior monitoring data from numerous wells and historical soil sampling events to develop comprehensive assessment objectives and scope. Targus undertook subsurface exploration (trenching and borings) using a combination of field screening equipment (x-ray fluorescence) and laboratory analysis to delineate metals contamination (primarily lead and copper). Assessment included areas within the firing ranges and downrange beyond the exterior area where lead shot had ecaped the wooden barriers. Vertical assessment was undertaken in an effort to differentiate that from buried junk yard residuals and from subsequent operations. Soil and groundwater assessment of contaminants released from prior waste fuel storage and use focused on areas of surface accumulation and subsurface piping and stormwater sewers. The contamination of groundwater and surface and subsurface soil was delineated on-site to restricted use criteria applicable to MSD sites.
The comprehensive assessment results were presented a VCP APAR subsequently approved by the TCEQ with modest changes/ explanation requested. Following approval of the APAR, Targus prepared a RAP for implementation following demolition.
