CH2M Hill Engineers, Inc. historically has assisted the City of Boynton Beach, for over 20 years with the preparation and certification of semi-annual groundwater sampling reports for the City's Class I landfill in accordance with the Palm Beach County Health Department (PBCHD) Permits for post-closure monitoring.  Additionally, CH2M helped the City develop a groundwater investigation program, accepted by the PBCHD, designed to evaluate a decision to cease long-term groundwater monitoring.

Concurrent with the groundwater investigation, CH2M assisted the City with implementation of a corrective action plan in response to Consent Order SW-15-08 issued by the Palm Beach County Health Department.  During an inspection of the landfill by the County it was noted that the geomembrane was exposed and needed to be addressed.  CH2M assisted the City by developing a task order (#R13-063-09 approved by Commission on 12/01/15, Amendment 1 approved by Commission on 04/22/2016 ) to address the work required to replace the geomembrane.

As part of the task order 13 Landfill Gas monitoring probes were installed in August 2016 to stabilize before sampling began.  The probes were sampled on several locations to monitor methane levels and other components.  During February 15-16, 2017 the probes were tested and methane values for Probe GP-8 exceeded the lower explosion level (LEL) for methane. 

In response to the exceedance of the LEL at Probe GP-8, the City, with assistance from CH2M, developed an initial gas remediation plan in accordance with Chapter 62-701.530(3)(a), Florida Administrative Code.  The City expanded response actions to provide for the health, safety and welfare of residents in the vicinity of the landfill.  This scope of services describes the activities provided by CH2M in conjunction with the LFG remediation plan development and implementation and are described in the attached Task Order No. R13-063-09-Amendment 2, under B. Scope of Services.   

This request for Commission approval is to continue the Scope of Services regarding monitoring of the probes set in place and to authorize by signing Task Order No. R13-063-09-Amendment 2 (attached).

The Purchase Order (#160652, attached) to CH2M was in the amount of $79,142.66.  Amendment 2 of Task Order No. R13-063-09 total cost is $155,904.28 for a total of $235,046.94.  Funding for this work will be from the Solid Waste Division, account#431-2515-534-49-17.