Okaloosa County BOCC — February 18, 2014 — reading text

remedial action system became operational in 2004. Based on operational observations, the remediation system has been slightly modified from the original design since becoming operational. After two years of operation, the remediation system was shut down in September 2006 to address compromise of the liner system in one of the treatment ponds. The remediation system was not reactivated until August 2008. Due to lack of maintenance and down-time, the remediation system was not operating fully until May 2009. Current assessments of the operational characteristics of the system indicate that the system is not performing to design specifications for a variety of reasons. SCS Engineers has been contracted to monitor the remediation system based on the RAP and subsequent modifications since 2007. The most recent RAP Modification was approved by the FDEP in 2011 paving the way for substantial infrastructure changes completed in 2013 which will ultimately result in substantial reductions in the cost of restoration activities. Both Long Term Care Semi-Annual Compliance and Remedial Action Assessment monitoring are budgeted activities. The activities in this Task Order address services to be performed in FY2014. In order to meet LTC Permit and Remedial Action requirements, the LTC and RAP Mod requires two monitoring events for a fixed price of $ $99,300. Packet Pg. 1053 OPTIONS: Approve/Disapprove RECOMMENDATIONS: Approve the scope and fee with SCS Engineers for monitoring associated with Baker Landfill not to exceed $99,300. RECOMMENDED BY: APPROVED BY: Ernie Padgett, County Administrator Packet Pg. 1054 Packet Pg. 1055 Environmental Consultants 3298 Summit Boulevard 850 432-6211 and Contractors Suite 31-A FAX 850 432-6220 Pensacola, FL 32503 www.scsengineers.com January 13, 2014 File No. 090473213 Mr. Scott Henson Okaloosa County Public Works Department Environmental Services Division 1759 South Ferdon Blvd Crestview, FL 32536 Subject: Proposal to Perform 2014 Semi-Annual Compliance and Remedial Action Plan Modification Sampling and Reporting for the Baker Landfill Dear Scott: SCS Engineers (SCS) is pleased to provide Okaloosa County, Public Works Department, Environmental Services Division (County) with this proposal to perform the 2014 semi-annual compliance and remedial action sampling and reporting for the Baker Landfill. This proposal includes SCS’ services to continue ongoing semi-annual and annual compliance monitoring and reporting and continue remedial action sampling modified in accordance with the 2008 RAPMOD – 2011 Addendum (RAPMOD) prepared by SCS, dated August 1, 2011, and approved by the Florida Department of Environmental Protection (FDEP) on December 7, 2011. This proposal provides SCS’ scope of services, estimated fee, and schedule to perform the semi- annual compliance and RAPMOD sampling reporting. SCOPE OF SERVICES In accordance with the closure permit for Baker Landfill (Permit No. 0075982-004-SF), as modified April 19, 2010, and the RAPMOD approved by FDEP on December 7, 2011, semi- annual reports for compliance and remedial action sampling are due by May 1 and November 1 of each year. To meet this schedule and the reporting schedule associated with laboratory reporting established in Chapter 62-780, Florida Administrative Code (FAC), semi-annual sampling will be performed in February and August of 2014. SCS will use the services of RDH Environmental (RDH) for collection of samples and Pace Laboratories (Pace) for samples analysis. Details of the scope of services are summarized in the following tasks. Tasks 1 and 2 – February and August 2014 Sampling and Reporting The following describes the proposed semi-annual sampling events for 2014 which will include field sampling activities, water quality analyses, and reporting of findings. Task 1 will be for the February event and Task 2 will be for the August event. The following will be performed for each event. Packet Pg. 1056 Mr. Scott Henson January 13, 2014 Page 2 Water Quality Sampling Water quality sampling will include the collection of groundwater and leachate samples. When available, SCS will also collect surface water and seep samples. Groundwater sample collection will be performed for compliance and RAPMOD requirements. Field work, sampling methodologies, data evaluation, and data Quality Assurance/Quality Control (QA/QC) will be performed in accordance with Chapter 62-160, FAC, Standard Operating Procedures (DEP-SOP- 001/01) (SOPs) and the closure permit. Sampling requirements are listed in a comprehensive Table A-1, included in Attachment 1. Table A-1 assimilates the compliance sampling requirements listed in Sections H and K of the closure permit and the remedial action sampling requirements listed in Table 2 of the RAPMOD. Table A-1 lists the sampling schedule, sampling locations, and related water quality parameters for each monitoring location. Semi-annual sampling will be performed during February and August, with the August event including annual sampling of the leachate (L-2), and the Shue Well. As required by Chapter 62-701.510(9)(a), SCS will electronically notify the FDEP within 14 days prior to each scheduled sampling event. SCS also will coordinate with RDH and Pace to confirm sample bottles have been ordered and delivered and sampling is occurring as scheduled. Water level measurements will be collected from each monitoring well across the site prior to sample collection. During purging procedures, indicator parameters will be measured and recorded in the FDEP water sampling logs in accordance with the current FDEP SOPs and permit requirements. For Quality Assurance/Quality Control (QA/QC) purposes, SCS will collect the appropriate number of equipment blanks and duplicate samples in accordance with the FDEP SOPs and as indicated in Table A-1. Prior to the initiation of sample collection, field instruments will be calibrated according to factory instructions. Instrument calibrations will be documented on a field log and submitted to the County with the field sampling logs and laboratory analytical results. Static water levels in each required well will be obtained on the same day using an electronic water level indicator to the nearest 0.01 foot. During the collection of the static groundwater elevations, each monitoring well will be visually inspected. If any problems with the monitoring well are observed, SCS will immediately notify the County of the problem. Low-flow groundwater purging, and sample collection procedures will be followed in the field using a portable pneumatic bladder pump, where dedicated pumps are not present. For recovery wells, samples will be collected from the recovery pumps via sampling ports on the submersible pump drop-pipes. When recovery wells are not operating, samples will be collected from the annular monitoring wells. FDEP SOPs will be followed during all sampling activities. Sampling equipment will be decontaminated prior to all phases of purging and sample collection to reduce the potential for cross contamination between sample locations. Required Quality Assurance/Quality Control samples will be collected including duplicates, equipment blanks, and trip blanks. The August event will include the semi-annual sampling locations included in the Packet Pg. 1057 Mr. Scott Henson January 13, 2014 Page 3 February event with the addition of the annual sampling for the landfill leachate and sampling of the Shue (private) well. During the purging and sampling operations, the groundwater will be monitored for pH, dissolved oxygen, specific conductance, temperature, turbidity, oxidation reduction potential (ORP), colors, odors, and sheens (by observation), and ferrous iron for monitoring wells which have been selected for Monitoring Natural Attenuation (MNA). Monitoring of these parameters will provide an indication of stabilization of the groundwater quality prior to sample collection. These parameters will be recorded on the sampling log. Once the indicator values are stabilized and a sufficient volume purged from the well, sample collection will begin. After sample collection, the samples will be prepared, preserved as necessary, and shipped to Pace using industry standard chain-of-custody procedures. Laboratory Analysis, Review, Database Update Water quality analyses will be performed by Pace in accordance with Chapter 62-160, FAC DEP-SOP-001/01 and the closure permit. Pace is certified by the Florida Department of Health Environmental Laboratory Certification Program (DoH ELCP). Pace will perform analyses as listed in Table A-1 in standard turn-around times (approximately two calendar weeks) and provide an electronic report and data package deliverable to SCS. A Level II quality control data package will be included within the laboratory report for each sampling event. Upon receipt of the laboratory report and data package, SCS will perform a quality assurance/quality control (QA/QC) review. Reporting SCS will prepare tables, figures, and a written report for each semi-annual event conducted during 2014 reviewing the data from each event. The reports will include a section on results of compliance monitoring and results of remedial action monitoring. SCS will also include a section in the reports addressing the operation and maintenance of the monitoring and remediation system at Baker. In accordance with the RAPMOD, reports will include a discussion of the effectiveness of monitored natural attenuation. Conclusions and recommendations will be provided in each report regarding monitoring location compliance and the effectiveness of the remediation system. Task 3 - FDEP Request for Additional Information With the combining of both the Compliance and RAPMOD reports into a single report, there exists the possibility that the FDEP may request additional information following submittal of one or both of the semi-annual reports. Task 3 will include the response to one FDEP Request for Additional Information (RAI) for each of the 2014 semi-annual reports. While SCS strives to provide a comprehensive document for regulatory review, RAIs typically include the request for clarification of assessments and inclusion of other information, to include historical data, tables, and figures. Task 3 includes responding to one RAI for each semi-annual event and providing Packet Pg. 1058 Mr. Scott Henson January 13, 2014 Page 4 available additional information. This task does not include installation of additional wells, additional sampling, or the further analysis of data. DELIVERABLES Laboratory reports and data packages are anticipated to be received by SCS on or about March 1 and September 1. The report for each sampling event will be submitted to the County in draft format within approximately 20 calendar days following receipt of the laboratory report and data package with the request that the County provide its review and comments within approximately10 calendar days. The draft report will include a complete electronic copy of the report in pdf format with a separate copy of the text in .doc format for tracked-changes review revisions and comments by the County. SCS will make appropriate revisions to the draft report based on County input and prepare the final version for submission to the FDEP by the May 1 and