April 16, Dear Mr. Beedie:

Transcription

1 April 16, 2012 Mr. Michael Beedie, P.E. City of Ft. Walton Beach Engineering Services Department 105 Miracle Strip Parkway SW Ft. Walton Beach, FL Re: Proposal for a Supplemental Site Assessment Former Bayou Woods Dump Parcel No. 11-2S Ft. Walton Beach, Okaloosa County, Florida Dear Mr. Beedie: Professional Service Industries, Inc. (PSI) is pleased to submit the following proposal to conduct Supplemental Site Assessment (SSA) activities at the above referenced site. Presented below is a review of existing project information, our proposed scope of services, schedule, and fee information. PROJECT UNDERSTANDING PSI performed a Phase I Environmental Site Assessment (ESA) at the subject property in June 2011, (PSI Report No ) for the City of Fort Walton Beach (City). The results of the ESA revealed the subject property had been historically used as a dump and a Phase II ESA was recommended to address soil and groundwater quality at the property. In October and December 2011, PSI conducted a Phase II ESA (PSI Report No ) to determine whether groundwater and soil quality had been impacted by the historic use of the property. The investigation focused primarily on Parcel Numbers 11-2S and 11-2S , which appear, based on historic aerial photographs and visual observation of the site, to have been where the cells associated with the former dump were mainly located. The results of the Phase II ESA revealed low levels of dieldrin and petroleum aromatic hydrocarbons (PAHs) above the state target levels. PSI recommended development and implementation of a more comprehensive soil sampling program, should the client choose to further define the impacted area. PSI also recommended that in the event the subject property was sold for residential or commercial development that the refuse associated with the dump be excavated and properly disposed of in a regulated landfill. PSI understands that the area of investigation will consist of one parcel 11-2S that totals approximately 1.87 acres and consists of seven lots. PSI will conduct the SSA to determine whether soil and groundwater associated with this parcel have been impacted by the historic use of the subject property as the Bayou Woods Dump. Currently the parcel is undeveloped.

2 SCOPE OF SERVICES The general scope of the SSA will consist of test pit excavation, soil sampling, well installation, groundwater sampling, laboratory analysis of soil and groundwater samples, data analysis and interpretation, and report preparation. Soil sampling activities and groundwater sampling activities will be conducted by PSI personnel. Well installation activities will be conducted by a State of Florida licensed Water Well Contractor, in accordance with Northwest Florida Water Management District requirements. All field personnel will be OSHA trained in accordance with 29 CFR Laboratory analysis will be performed by a firm approved by a National Environmental Laboratory Accreditation Conference. Investigation Derived Waste (IDW), including excess soil samples and drill cuttings, will be returned to the site where conditions allow; otherwise, the material will be drummed and left on-site for future handling by the client. Field quality control samples will be collected and analyzed as part of the assessment in order to validate the field and laboratory data. The IDW from the test pit excavation will be returned to the respective pits. Soil Assessment Activities 1. Excavation of seven (7) test pits to approximately 8 feet bls. Figure 1 presents the proposed test pit and soil boring locations. PSI will document exposed refuse associated with the Former Bayou Woods Dump. 2. Field screening of collected soil samples for organic vapors will be performed using an organic vapor analyzer (OVA). Samples with an OVA response greater than 10 parts per million (ppm) will also be OVA screened with a carbon filter attached to the tip of the OVA. The result will represent methane response and the difference between the filtered an unfiltered response will represent a non-methane or net response indicating the presence of hydrocarbons. 3. One soil sample from each test pit will be collected for laboratory analysis. The samples will be selected based on the observed odor, visible staining, and net OVA readings. In the event that all net OVA readings for the test pits are <10 parts per million (ppm), the soil sample will be collected from land surface to 6 inches bls. 4. Laboratory analysis of samples may include the following: EPA Method 8260 for Volatile Organic Compounds (VOCs) and Volatile Organic Halocarbons (VOHs), Polycyclic Aromatic Hydrocarbons (PAHs) using EPA Method 8270, total recoverable petroleum hydrocarbons (TRPH) using FL-PRO, Resource Conservation Recovery Act (RCRA) 4 Metals using EPA Method 6010, and pesticides using EPA Method Well Installation and Groundwater Sampling Activities 1. Installation of three temporary wells to a depth of approximately 15 feet bls. Each temporary monitoring well will be installed in the vicinity of a test pit. Figure 1 depicts the proposed temporary well locations. The wells will be constructed with 2 inch diameter schedule 40 polyvinyl chloride (PVC) well casing. The well will have 10 foot of inch Page 2 of 5

3 machine-slotted schedule 40 PVC well screen and a filter sand pack will be placed around the screened interval of the well. Each monitoring well will then be developed with a submersible pump until the development water is clear. The temporary wells will be abandoned or removed upon completion of the work. 2. The temporary wells will be sampled in accordance with the requirements established in the Florida Department of Environmental Protection s (FDEP s) Standard Operating Procedures (DEP-SOP-001/01). Groundwater samples collected from the temporary wells will be submitted to a state-certified laboratory for analysis of VOCs and VOHs using EPA Method 8260, PAH s using EPA Method 8270, TRPH using FL-PRO, RCRA 4 Metals using EPA Method 6010, and pesticides using EPA Method All temporary wells will be monitored for landfill gases including hydrogen sulfide (H2S), methane (CH4), carbon dioxide (CO2), and carbon monoxide (CO) following installation and prior to conducting groundwater sampling activities. REPORT A report of our findings will be prepared and two (2) copies provided. The SSA Report will include a description of the assessment rationale and scope of work, field activities, analytical results, findings, conclusions, and offer recommendations if applicable. The report will be provided for reliance by the City of Ft. Walton Beach. The SSA Report may result in development of information which may place an obligation upon the site owner or operator to provide reporting to a regulatory agency or other third party. PSI will not provide reporting to regulatory agencies or other third parties unless the City of Ft. Walton Beach expressly requests such reporting to be performed. SCHEDULE PSI proposes to start the field investigation within five to ten working days after authorization to proceed has been received. Based on an anticipated 30 working days for field and laboratory activities for each task, PSI proposes to deliver the report in 25 to 30 work days following completion of field activities. SPECIAL INSTRUCTIONS Your communication of previous environmental investigations, assessments or other such documents to us, along with any specialized knowledge or experience that is material to recognized environmental conditions in connection with the property is needed to comply with the ASTM protocol. Upon project start-up, PSI will contact you or your designated representative regarding this information and project scheduling. Arrangements for access, including notification of tenants, will be the responsibility of the client. Client shall provide clearance for all drilling and boring locations. PSI is not responsible for subsurface utilities or other appurtenances not identified by the client or utility alert services notified prior to the start of drilling activities. THIRD PARTY RELIANCE Third party reliance letters may be issued upon request and upon the payment of the, then current fee for such letters. All third parties relying on PSI s reports, by such reliance, agree to Page 3 of 5

4 be bound by this proposal and PSI s General Conditions. No reliance by any party is permitted without such agreement, regardless of the content of the reliance letter itself. FEES It is proposed that the fee for performance of the outlined scope of services be determined on a lump sum basis. Based on the scope of services outlined above, the estimated total fee is $14,074. The proposed cost is based on a standard laboratory turn around of 10 working days. This proposal does not include the handling, storage, transportation, or disposal of hazardous substances or wastes. Additional work required beyond the scope of services included in this proposal, or as caused by factors beyond PSI's control, will be invoiced on a time and expense basis. A Schedule of Services and Fees is enclosed herewith and incorporated by reference. Additional work will not be performed without prior authorization. AUTHORIZATION To execute this proposal, please sign and complete the proposal authorization and instructions for payment below, and return one copy of this proposal to our office. We will proceed with the work upon receipt of proposal authorization. PSI will perform the work in accordance with the attached General Conditions, which are incorporated into and made a part of this proposal. Please call with any questions you may have, or if PSI can be of additional service. We look forward to working with you on this and future projects. Respectfully submitted, PROFESSIONAL SERVICE INDUSTRIES, INC. Sarah A. Battaglia, RPA Project Manager Nana Westmark, CHMM, P.G. Principal Consultant Attachments: General Conditions Project Cost Schedule Page 4 of 5

5 Authorization To execute this proposal, please sign and complete the authorization information below along with applicable payment instructions, and return one copy of the authorized proposal to our office. Authorized By (please print) Title Signature Firm Address City State Zip Code Telephone Date Purchase Order No. / Project Tracking No. (if applicable) Payment Instructions If invoice payment is to be made by a party other than the authorizing party above, please provide the following information for whom the invoices are to be billed: Firm Address Attention Title City State Zip Code Telephone Authorizing Party s Relationship to Invoice Payment Party If invoices are to be approved other than by the payment party above, please provide the following information for whom the invoices are to be mailed for approval: Firm Address Attention Title City State Zip Code Telephone Authorizing Party s Relationship to Invoice Approval Party Page 5 of 5

6 N LEGEND Proposed Monitoring well Locations Proposed Test Pit Locations Scale: Test Pit & Monitoring Well Locations Supplemental Site Assessment Former Bayou Woods Dump Ft. Walton Bch, Okaloosa, Florida PSI Project No. Not to scale Figure 1 N/A