Former KLN Steel/Friedrich Air Conditioning Site


Banco Popular North America


4200 I-35 Frontage Road, San Antonio, TX 78219

Project Cost


Project Size

38.7 acres

Date Completed


Services Provided

Prime consultant, project management, Affected Property Assessment, Response Action Plan for both soil and groundwater; conducted a soil response action, DNAPL recovery system, asbestos inspection, abatement/demolition oversight

Project Description

The KLN Steel VCP site, located in San Antonio, Texas, was formerly owned by Friedrich Air Conditioning.  Friedrich manufactured and assembled air conditioning window units at the subject property from the mid-1970s through the early 2000s. Friedrich used large quantities of various chlorinated solvents and hazardous materials.  The facility disposed between 9 and 50 tons of spent solvents each year.  Poor waste management practices and obvious spills within the facility resulted in both soil and groundwater contamination.  The site was enrolled in the Texas Voluntary Cleanup Program in 2009.  InControl was retained by Banco Popular to complete the affected property assessment and develop response actions to address contaminated soil and groundwater.  The affected property assessment identified three PCLE zones: (1) in soil in which approximately 4,000 cubic yards were impacted by chlorinated solvents, (2) in the groundwater which is approximately 2,500 ft long, and (3) elevated levels of chlorinated solvent detected in the air.  The groundwater plume is approximately 2,500 feet long and there is a distinct layer of Free Phase DNAPL.  In addition to soil and groundwater issues, elevated levels of chlorinated solvents were also detected in the former indoor air space.

InControl strategically planned to perform multiple services simultaneously to meet the client's scheduling and budget requirements. Initially, we sampled the groundwater monitoring wells to assess the state of the property. Quarterly sampling events continued concurrently with other services and are still ongoing.  As part of the property redevelopment, a warehouse and offices located on the subject property were planned to be demolished.  InControl Technologies completed an asbestos survey to identify regulated asbestos-containing building materials prior to demolition.  The asbestos survey was conducted in accordance with Texas Asbestos Health Protection Rules {295.34(c)} and in conjunction with USEPA Regulations (40 CFR 61.145).  From the asbestos survey results, we developed an intensive asbestos abatement plan and oversaw all abatement activities in both the warehouse and offices. InControl Technologies participated in the selection of the asbestos abatement contractor and demolition contractor. We were on site and available to provide additional expertise needed by the client. After the subject structures received clearance, we provided oversight during demolition activities.

Concurrently, InControl Technologies completed the Affected Property Assessment and developed a soil and groundwater Response Action Plan. We designed and implemented an Interim DNAPL recovery system to evaluate the recovery rates of the Free Phase DNAPL product prior to the demolition of the building. For efficiency, as demolition was completed in segments along the property, we conducted a large scale onsite soil treatment (approximately 5,000 cubic yards) in the cleared areas.  A full scale DNAPL recovery system was installed after the completion of the soil treatment activities. This system was customized for the subject site to minimize the generation of water into the system, which, in turn, reduced the overall disposal costs. We implemented a remote data monitoring and acquisition software application to provide remote telemetry to the system, which maximized the equipment run-time to over 95 percent. Following the completion of the removal of the Free Phase DNAPL product recovery system, InControl Technologies will design and implement a full scale groundwater treatment system. This system will employ technologies that  have been effective in remediating solvent-impacted groundwater at several of our project sites.