Todd Kafka, Joseph Applegate, Olivia Cain, and Ryan Tuttle to Present at Florida Remediation Conference
Todd Kafka, P.G., Joseph Applegate, P.G., Olivia Cain, and Ryan Tuttle, P.G. (Florida) will present on site remediation at the Florida Remediation Conference at the Rosen Centre Hotel in Orlando, Florida on November 18–19, 2021. Geosyntec is also hosting an exhibit booth at the event.
Todd Kafka is a Senior Principal Hydrogeologist based in Florida with more than 26 years of professional experience focused on site assessment, remediation, and hydrogeological investigations for private and public sector clients. He assists his clients with the design, implementation, and management of site investigations under RCRA, CERCLA, and numerous state programs for small and large facilities throughout the southeastern, Mid-Atlantic, and midwestern U.S.
Joseph Applegate is a Florida-based Senior Principal Hydrogeologist with more than 35 years of experience in managing multiple USEPA CERCLA, RCRA, and FDEP environmental contracts and programs and has managed federal, state, and industrial sites including petroleum, dry-cleaning facilities, chemical manufacturers, landfills, former MGPs, and pesticide manufacturers and applicators.
Olivia Cain is an Environmental Engineer based in Florida with experience focused on site assessment, remediation, emerging contaminants, and litigation support. She assists clients with the characterization and remediation of soil and groundwater contaminated with PFAS, chlorinated solvents, VOCs, metals, and petroleum hydrocarbons. Olivia's PFAS practice includes the characterization and assessment of PFAS sources, including historical document review, identification of potential PFAS sources at and around sites, multi-media sampling, and assessing PFAS fate and transport.
Ryan Tuttle is a Project Geologist based in Florida with 18 years of professional experience in environmental site assessment and remedial investigation. He has managed and conducted site assessment activities for various clients at manufactured gas plant, former legacy waste management, chlorinated solvent, and petroleum sites in Florida. Ryan has achieved multiple site conditional closures using Risk Management Options specified in Florida Administrative Code, Chapter 62-780.
The Florida Remediation Conference (FRC) is one of the premier soil, air, and water remediation conferences of the year. Though FRC started out as a Florida-centric event 25 years ago, it has developed a reputation for fostering the remediation and redevelopment industries across the southeastern U.S. FRC attracts more than 600 attendees comprised of a mix of industry representatives, developers, consultants and contractors, and more than 100 exhibitors and sponsors from across the country.
Transformation of an 84-Acre Former Railyard and Brownfield into Bonnet Springs Park, Lakeland, Florida
Presenter: Todd Kafka, Geosyntec
Time/Date: 1:30–3:00 p.m. EST on November 18, 2021
Located within one mile of downtown Lakeland, the former Lakeland railyard property has long been identified as an ideal redevelopment target to support the growing downtown area, if only it had not operated as a railyard for nearly 50 years! However, with the significant support of private financing and unwavering perseverance of local developers and stakeholders, Bonnet Springs Park (BSP) is blooming into a public park ready for visitors in 2023. Geosyntec joined a team of local engineering, consulting, and legal firms led by Sasaki, Inc., a world-renowned landscape architectural firm based in Boston, to transform the 84-acre railyard into the upland portion of the 145-acre footprint of BSP. Geosyntec had previously worked at the former railyard for the rail owner and had obtained a conditional site rehabilitation completion order (C-SRCO) for soil and groundwater using risk management option (RMO) III and deed restrictions that prohibited groundwater consumptive use and residential land use due to elevated arsenic concentrations in soil. The sale of the railyard to BSP was contingent upon FDEP's approval of a Brownfield Site Rehabilitation Agreement (BSRA), which was obtained by Goldstein Environmental Law. Geosyntec developed a conceptual approach to convert the land use from industrial/commercial to recreational, which would require soil remediation to achieve an alternative soil cleanup target level (A-SCTL) of 5.5 milligrams per kilogram (mg/kg) for arsenic. The foundation of our approach was eliminating offsite disposal of impacted soil by (i) moving and consolidating surplus soil from grading into two mounds onsite, (ii) identifying and delineating arsenic-contaminated soil at the new subgrade elevation across the former yard footprint for removal/consolidation into the two mounds to achieve the recreational A-SCTL, and (iii) capping the two mounds with 2 feet of clean fill to serve as engineering controls. Sasaki designed the entire park based on this conceptual soil remediation approach. In order to comply with Chapter 62-780 requirements for using 95% upper confidence limits (UCL) to assess soil exposure, Geosyntec divided the future park areas overlying the former railyard into exposure units (EU) based on the potential exposure a visitor in each area of the park (e.g., trails, parking areas, gardens buildings, boardwalks, etc.) may experience relative to residual arsenic concentrations in soil; BSP also required that one EU (children's play area) achieve the residential SCTL as a conservative measure. Geosyntec used projected grading plans to begin extensive soil assessment to identify soil removal areas in each EU. Arsenic "hotspots" were evaluated and selectively removed from the dataset in each EU until the 95% UCL was attained. Excavation boundaries were established with step out samples and XRF screening to develop soil removal plans for each EU. During this process, Geosyntec coordinated multiple meetings with FDEP and submitted several deliverables to keep FDEP informed of progress and findings. Ultimately, over 250,000 cubic yards (cy) of arsenic-impacted soil was consolidated in the two mounds, which were capped with over 75,000 cy of properly-characterized fill from three separate sources. Geosyntec obtained a provisional C-SCRO (pending final stormwater design) from FDEP in March 2020, thereby allowing the project team to move forward with abovegrade construction.
Session III: PFAS Update and Remediation Case Study Review
Moderator: Joseph Applegate
Time/Date: 3:30–5:00 p.m. EST on November 18, 2021
PFAS Source Removal Objectives, Approach, and Challenges at a Florida Fire Training Facility
Presenter: Olivia Cain, Geosyntec
Time/Date: 3:30–5:00 p.m. EST on November 18, 2021
Geosyntec is conducting PFAS assessment activities at fire training facilities in Florida. Results from the soil assessment at one of these facilities indicated concentrations were above the provisional Soil Cleanup Target Levels for direct exposure. Within six months, we prepared an Interim Source Removal Work Plan and implemented construction for one of the first source removals to address PFAS-impacted soils at a fire training facility in Florida. This presentation will discuss the objectives and approach for the remedial action and lessons learned during implementation including: logistical challenges and planning considerations; management of PFAS waste; challenges working at an active fire training facility; and dust monitoring and worker exposure assessments/mitigations.
Strategies for Transitioning from Active Remediation to Site Closure under Chapter 62-780 Risk Management Options Level III using Non-Declaration of Restrictive Covenant Institutional Controls
Presenter: Ryan Tuttle, Geosyntec
Time/Date: 10:30 a.m.–12:00 p.m. EST on November 19, 2021
Through Case Study examples, strategies for transitioning sites from active remediation to Risk Management Option II and III No Further Action with Controls will be presented. The case study will include a former optical lens manufacturer with chlorinated solvent groundwater impacts remediated through a combination of remedial technologies, and transition from remediation to site closure under Risk Management Options Level III with Institutional Controls (IC) through quantitative and qualitative plume stability analysis. The ICs consist of Non-Declaration of Restrictive Covenant Institutional Controls (NDICs) using a Southwest Florida Water Management District well permitting shapefile to restrict groundwater use. The use of NDICs can assist in achieving ICs on multiple parcels in lieu of traditional deed restrictions.
About the event: Florida Remediation Conference