2014-081 - Laserfiche WebLink

Home Browse Search

Mr. Himanshu H. Mehta, P.E. 23 May 2014 Page 2 to assess CVOC plume centerline concentrations over time, and (iii) assess the impact of biological and physical natural attenuation processes on CVOC plume degradation. The on -Site IP&T system was installed to provide hydraulic containment of the high concentration area of the dissolved groundwater plume in December 2002. A Remedial Action Plan (RAP) was developed in July 2003, concurrent with the groundwater monitoring activities and IP&T system operation. The RAP outlined a proposed remedy for the VOC-impacted area of the Site, including (but not limited to), expansion of the existing IP&T system and construction of an infiltration gallery for effluent re-injection, which was completed in 2004. The infiltration gallery was retrofitted in 2008, in accordance with design specifications described in the May 2007 RAP Modification document, and is currently being used as part of the biobarrier transect 1 at the Site. The FDEP approved discontinuing the use of the IP&T system in a letter dated 2 August 2006, provided the system shutdown coincided with the approval and implementation of a Remedial Action Plan Modification (RAPM). A RAPM was submitted in May 2007 and approved by FDEP in August 2007 Geosyntec discontinued IP&T system operation and implemented the RAPM activities in April through June 2008. Since that time, the air stripper has been kept on-site for treatment of purge water. However, the blower on the air stripper is no longer functional and liquid waste generated during groundwater sampling events is currently being containerized in 55 -gallon drums for offsite disposal so the system can be dismantled. PROPOSED SCOPE OF WORK The proposed scope of work consists of semi-annual groundwater monitoring and reporting and related activities to be performed on behalf of IRC SWDD at the Former South Gifford Road Landfill. For the purpose of budgeting, the scope of work has been divided into the following tasks: • Task 1 — Project Management; • Task 2 — Meetings/Regulatory Interaction; • Task 3 — Annual Pollution Remediation Liabilities Evaluation; • Task 4 — Semi -Annual Sampling Activities* • Task 5 — Data Evaluation and Semi -Annual Reporting; and • Task 6 — IP&T System Dismantling The remainder of this section presents a general description of the activities to be performed in each task. XR14096\PR14027 20140523_REV engineers 1 scientists 1 innovators