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Indiana Department of Environmental Management

IDEM > Environmental Cleanup > Leaking Underground Storage Tanks (LUSTs) > LUST Initial Site Characterization Report Checklist LUST Initial Site Characterization Report Checklist

A. Background

  1. Responsible party information must include:
    1. the owner/operator name and address
    2. past owner/operators
  2. Site specific information must include:
    1. the facility name address, phone number and facility I.D. number
    2. type of facility, past and current operations
    3. past construction activities
    4. spill history
    5. site proximity to sensitive areas (schools, municipal well fields, etc.)
    6. subsurface soil descriptions
    7. location of all water wells within one mile radius
    8. description of all site work complete to date
  3. Underground storage tank(s) (UST) information must include:
    1. number and volume of tank(s)
    2. tank(s) construction material and type of leak detection
    3. tank(s) past and present contents
    4. records of most recent tightness test results, inventory records and/or tank gauging records for the past calendar year
    5. tank(s) age and installation dates
    6. UST System Closure Report submittal date, if applicable

B. Incident Description

  1. Incident information must include the following:
    1. date reported to Indiana Department of Environmental Management at:
      • (317) 232-8900; or
      • (317) 233-7745 (SPILL)
    2. release incident number given by IDEM at time of initial report
    3. assigned IDEM site priority ranking obtained at time of initial report
    4. material(s) released
    5. volume lost, area(s) affected (soil, groundwater, sewers, etc.)
    6. health and environmental risk(s) associated with the spill incident

C. Initial Response/Abatement, Free Product Removal

  1. Initial response and abatement information must include the following:
    1. detailed descriptions of immediate actions to prevent any further release
    2. measures taken to prevent further migration
    3. actions taken to identify and mitigate fire and explosion hazards posed by vapors or free product
    4. actions to investigate free product release
  2. Free product recovery information must include the following:
    1. name of person(s) responsible for product removal
    2. estimated quantity, type and thickness of product observed or discovered
    3. a description of the recovery system
    4. copies of all permits from local, state and federal agencies for handling, treating, discharging and disposing of the contaminants
    5. final disposition of the recovered free product

D. Investigations

  1. Regional
    1. geologic information
      1. types of bedrock
      2. soil series description (USDS, Soil Conservation Services
      3. list of soil and geologic references used
      4. 4. other information as necessary
    2. hydrogeologic information
      1. depth to groundwater and seasonal fluctuations
      2. flow direction(s) and gradients
      3. regional hydrogeological references used
      4. other information as necessary
    3. maps
      1. illustrated legends and compass directions and at an appropriate scale (NOTE: drawing not to scale is inadequate)
      2. topographic base with 10 ft contour intervals
      3. location, depth and corresponding IDNR - DOW (Indiana Department of Natural Resources - Division of Water) well records of high capacity wells (greater than 70 gallons/minute) and municipal water supply wells within two mile radius (IDNR- DOW)
      4. location, depth, corresponding IDNR-DOW well records of smaller wells within a one mile radius
      5. site location, other facilities and land use within one mile radius (agricultural, industrial, commercial, etc.)
      6. surface water bodies within one mile radius
  2. Site specific
    1. geologic information
      1. minimum of three (3) on-site continuously sampled soil borings to determine subsurface geology
      2. soil borings (accurately field surveyed with a horizontal closure of less than one foot error) placed as needed to confirm extent of soil contamination
      3. site soil stratigraphy identification, including cross-sections
      4. boring logs that give lithologic descriptions or USDA soil textures, degree of sorting, Munsell Soil colors, sedimentary contacts, gas/vapor readings, etc.
      5. boring logs all using the same vertical scale, including surface elevations
      6. other information, as necessary, to describe site conditions
    2. hydrogeologic information
      1. depth to groundwater along with seasonal fluctuations (at a minimum, quarterly monitoring events will be required to define seasonal fluctuations)
      2. flow direction(s) and gradients
      3. hydraulic characteristics (hydraulic conductivity, transmissivity, storativity, confined or unconfined conditions, porosity, average liner velocity, etc.)of the aquifer(s) involved. Note: if not determined for the specific site, proper source references for estimates must be provided)
      4. a minimum of three (3) monitoring wells screened across water table fluctuation and not placed in a straight line
      5. monitoring wells placed as needed to confirm extent of groundwater
      6. monitoring well locations surveyed to a temporary benchmark with a vertical accuracy of .01 foot and with a horizontal closure of less than one foot
      7. well construction records submitted using the same scale that includes surface and top-of-casing elevations
      8. other information, if necessary
    3. maps and contamination plume identification, maps must include the following:
      1. illustrated legends and compass directions at an appropriate scale
      2. topographic base with appropriate contour intervals to accurately describe the site
      3. identified above ground features (buildings, roadways, manways, pump island, property lines, etc.)
      4. identify subsurface features (tanks, piping, utility conduits, etc.)
      5. soil boring and monitoring well locations surveyed to a temporary benchmark (accuracy of .01 foot)
      6. sampling locations (field and laboratory) along with depth and contaminant concentrations
      7. horizontal and vertical contaminant plume identification (TPH concentrations on geologic cross sections and plan view, benzene plume on plan view of site, etc.)
      8. geologic cross sections showing the water table and illustrating vertical contaminant plume identification
      9. groundwater flow direction(s) (NOTE: if free product is present on-site, then maps and flow direction must be corrected accordingly to determine true groundwater depth and flow direction)

E. Sampling

  1. Field Investigation Techniques
  2. Field Screen Samples (H/Nu, OVA, Gastech, etc.)
  3. Laboratory
    1. sample acquisition
    2. preservation
    3. shipping requirements
    4. time and storage
    5. chain-of-custody
    6. decontamination of equipment between sample
    7. a signed Laboratory Certificate of Analysis listing analysis method, preparation method, date of sample receipt, date of analysis. A statement that the method QA/AC procedures were followed. This QA/QC package must be available if requested by IDEM.
    8. chain-of-custody documentation including laboratory receipts
    9. decontamination procedures
    10. sampling procedures and techniques
    11. proper analytical methodology based on Tier I and Tier II soil and groundwater tables (UST Guidance Manual 3-9 and 3-10)
    12. proper analytical detection limits based on Tier I and Tier II tables (UST Guidance Manual 3-9 and 3-10)

F. Results/Conclusions

  1. Discuss the results of the site investigation
  2. Include all field and laboratory sample results in a tabular format

G. Recommendations

  1. Overall effectiveness of technology
  2. Include all field and laboratory sample results in a tabular format
  3. Expected treatment duration
  4. Treatment reliability
  5. Anticipated permits required
  6. This report must be signed by an experienced environmental professional (engineer, geologist, hydrogeologist, C.H.M.M., etc.)