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Home My WebLink AboutBack-Up DocumentsM IAM I DADS Memorandum �o�Nn Date: March 11, 2014 To: Honorable Bruno A. Barreiro Board of County Commissioners -District 5 From: Carlos A. Gimenez Mayor Subject: Notice of Environmental Contamina n in Commission District 5 On March 3, 2009, the Board of County Commissioners adopted Resolution No. R-227-09 requiring that when environmental contamination is identified by the Department of Regulatory and Economic Resources Division of Environmental Resources Management (DERM), the Commissioner in whose District the environmental contamination is located shall be notified of such. Pursuant to R-227-09, please be advised that the attached letter was sent to the party responsible for site rehabilitation on March 3, 2014 due to documented soil contamination. There is no evidence of a direct exposure risk to the contaminated soils since the site has been closed to the public. The owner/operator/responsible party must perform site rehabilitation action in order to bring the site into compliance with Chapter 24 of the Code of Miami -Dade County. The summary of this case is noted below: Subject Environmental Contamination Facility Name: City of Miami Southside Park DERM File #: HWR-779 Facility Address: 100 SW 11 Street, Miami, Florida in Miami -Dade County Folio Number: 01 0208 050 1010 Description/Nature of Violation: Environmental contamination requiring site rehabilitation action pursuant to Division 3, Contaminated Site Cleanups, Chapter 24, Code of Miami -Dade County, Florida. Should you have any questions or require additional information, please contact Mr. Lee N. Hefty, Director, Division of Environmental Resources Management, Department of Regulatory and Economic Resources at (305) 372-6754 or by email at hefty)@miamidade.gov. Attachment: Site Rehabilitation Order for Environmental Contamination c: Jack Osterholt, Deputy Mayor/Director, Department of Regulatory and Economic Resources Lee N. Hefty, Director - Division of Environmental Resources Management - RER MIAMF� COUNTY Carlos A. Gimenez, Mayor March 3, 2014 CERTIFIED MAIL NO. 7011 0470 0002 4387 5199 RETURN RECEIPT REQUESTED Alice Bravo, Assistant City Manager City of Miami 444 Southwest 2nd Avenue Miami, Florida 33130 Department of Regulatory and Economic Resources Environmental Resources Management 701 NW 1st Court, 4th Floor Miami, Florida 33136-3912 T 305-372-6700 F 305-372-6982 miamidade.gov Re: Site Assessment Report (SAR) dated January 30, 2014 and Sampling Plan dated February 18, 2014 and prepared by TY LIN International/HJ Ross for the City of Miami Southside Park (HWR-779) located at, near, or in the vicinity of 100 SW 11 m Street, Miami, Miami -Dade County, Florida. Dear Ms. Bravo: The Department of Regulatory and Economic Resources -Division of Environmental Resources Management (DERM) has reviewed the above -referenced documents received February 4, 2014 and February 18, 2014, respectively, and offers the following comments: 1. Provide the location, boring logs, laboratory data, and chain of custody for the December 17, 2013 Southside (1)(0-0.5) and Southside (2)(0-0.5) soil borings listed on Table 1 Soil Analytical Summary. 2. Soil boring logs are not in the appropriate format. Provide soil boring lithology information on log sheets such in the attached sheet. In addition, further describe the material considered construction debris versus ash. 3. Soil analytical samples were composite samples of intervals of 4 feet and were also taken from depths 0-4 feet, 8-12 feet, or 12-16 feet. These intervals and depths are not representative of surface and subsurface conditions at the site. DERM concurs with the recommendation that additional soil characterization be performed at the site. 4. The full horizontal and vertical extent of both ash/solid waste impacts and contaminants above applicable cleanup target levels are required to define both on and off -site impacts. 5. Regarding the proposed Sampling Plan: • A sampling grid within the park boundary for areas impacted with ash/solid waste within the upper 2 feet is necessary. The plan shall be developed utilizing a sampling grid pattern consisting of appropriately sized grids (e.g., 50 feet by 50 feet). Please note that the next available soil boring with no material in the upper 2 feet or the park boundary shall be used as the defining point in any given direction. Within each selected sampling grid, a single discrete sample shall be collected from the inten/f,6 1, e jrrpp9sed1ir, f p Y,However, Ms Bravo March 3, 2014 HWR-779 Page 2 of 3 include PAHs in the archived samples with PCBs and Dioxins. Furthermore, Selenium and Silver are not required. The play ground area shall also be included for discrete sampling. • A sampling grid within the park boundary for areas impacted with ash/solid waste but not within the upper 2 feet shall also be conducted, including the area around the community center. The plan shall be developed utilizing a sampling grid pattern consisting of appropriately sized grids (e.g., 75 feet by 75 feet). Within each selected sampling grid, a 12 point composite sample shall be collected from the intervals and parameters as proposed in the plan (and as modified above). • Existing soil boring data indicates that ash/solid waste material extends to the property boundary in all directions. Therefore, off -site delineation shall be conducted from all boundaries. The off -site borings proposed are not sufficient to address this matter. The consultant shall propose a plan for representative locations off -site along the boundary of the entire park property. The next accessible location shall be selected based on access issues (i.e. utilities, buildings, etc.). Furthermore, locations such as open ground areas and residences shall take priority in sample locations. Trenches or soil borings shall first be installed and visually screened for ash/solid waste material. At any location where material is identified, regardless of the depth, a soil sample shall be obtained from the 0-6" and 6"-2-foot intervals for the proposed parameters (as modified above and including the archiving the samples for the PCB, PAH, and Dioxin analysis). Immediate notification to DERM shall be provided for any off- site parameters that exceed applicable CTLs. • The sampling plan shall include a representative number of monitoring wells to allow for groundwater assessment depending on the soil sampling results. Monitoring well placement may be adjusted depending on the proposed site closure. For conditional closure, wells may be limited to establishing boundary conditions. Any irrigation wells present at the site shall be sampled for the proposed parameters, including dioxins and PCBs (and as modified above). • A proposal for methane assessment adjacent to structures and at the park boundary may be necessary depending on the type of solid waste documented. Be advised that the levels of soil analytical results submitted in this report constitute violations of Chapter 24, Code of Miami -Dade County (the Code), specifically, Sections 24-44, 24-27, 24-28, and 24-29 of the Code. Based on the above, and pursuant to Sections 24-7(15), 24-7(26), and 24-44(2)(g) of the Code, you are hereby ordered to submit to this office for review a Site Assessment Report (SAR) prepared in accordance with Section 24-44(2)(j)(iv) of the Code. Specific guidance for the preparation of the SAR may be downloaded from DERM's web page at: www.miamidade.00v/environmeni/pollution- remediation.asp. However, an addendum to the Sampling Plan addressing the above comments shall be submitted within thirty (30) days upon receipt of this letter. Ms Bravo March 3, 2014 HWR-779 Page 3 of 3 Be advised that failure to comply with above orders may result in enforcement action. If you have any questions concerning the above, please contact Thomas Kux, P.G., at (305) 372-6700. Sincerely, Wilbur Mayorga, P.E., Chief Environmental Monitoring and Restoration Division WM/tk ec: Jeovanny Rodriquez, City of Miami - jeovannvrodriquez(miamigov.com Lee Hefty, Director, DERM Florida Department of Environmental Protection - Division of Waste Management - Bureau of Petroleum Storage Systems Boring/Well Number: BU NG LUG Permit Number: Page 1 of FDEP Facility Identification Number: Site Name: Borehole Start Date: End Date: Borehole Start Time: End Time: r AM r PM r AM r PM Environmental Contractor: Geologist's Name: Environmental Technician's Name: Drilling Company: Pavement Thickness (inches): Borehole Diameter (inches): Borehole Depth (feet): Drilling Method(s): Apparent Borehole DTW (in feet from soil moisture content): Measured Well DTW (in feet after water recharges in well): OVA (list model and check type): r FID r PID Disposition of Drill Cuttings [check method(s)]: r Drum r Spread r Backfill r Stockpile r Other (describe if other or multiple items are checked): Borehole Completion (check one): r Well r Grout r Bentonite r Backfill c 3 e Cen m ect eb La ' ea A wig e. VAO PaiWH1Uuf1 VAO Pa-aHU rt m r-- 1 2 3 4 5 6 7 8 9 10 12 r Other (describe) Sample Description (include grain size based on USCS, odors, staining, and other remarks) IogwSS SOSf] ;ua;uo0 ainmoj Lab Soil and Groundwater Samples gist sample number and depth or temporary screen interval) Sample Type Codes: PH = Post Hole; HA = Hand Auger; SS = Spli Spoon; ST = Shelby Tube; DP = Direct Push; SC = Sonic Core; DC = Drill Cuttings Moisture Content Codes: D = Dry; M = Moist W = Wet; S = Satu ated