Rhode Island Code of Regulations › Title 250 - Department of Environmental Management › Chapter 140 - Waste and Materials Management › Subchapter 05 - Solid Waste › Part 6 - Solid Waste Regulation No.6 Petroleum Contaminated Soil Processing Facility › Section 250-RICR-140-05-6.8 - Sampling of Incoming Loads at Processing Facility, for Fingerprinting Analysis (Per Section 6.2(D) of this Part)

Current through June 14, 2024
A. The following is
				  a guideline that represents a minimum sampling and testing strategy. Additional
				  sampling and testing may be desirable at a given facility, on a case-by-case
				  basis, to adequately fingerprint the soil and to minimize potential of
				  accepting hazardous waste. (Parameters to be analyzed in the tests are
				  discussed in §§
										6.2(C) and
				  6.7 of this Part.)
1. Each truck load of waste arriving at the
				  facility shall be sampled. This applies to all loads from a given field site
				  (generator site) originating from a small or large excavated pile or
				  unexcavated area and even if the material appears to be homogeneous at the
				  site.
2. Sampling may be performed
				  while the load is on the truck or after the load has been deposited in the
				  receiving area (in the latter case, the load shall be segregated from other
				  truck loads from the given field site, at least until sampling is
				  completed).
3. At least five grab
				  samples shall be collected from each truck load, from a depth of at least one
				  foot, at zones within the pile designated as north, south, east, west, and
				  center. In each zone the sample should be collected from the point with highest
				  visually observed contamination concentration level. These samples shall be
				  composited into one sample.
4. If
				  the processor's facility design and operating procedures are such that all
				  truck loads from a given site are combined into one overall pile, after
				  sampling for fingerprint analysis, then the following applies:
a. Composite samples from approximately five
				  truck loads will, in turn be composited into one overall sample, representing
				  approximately 100 cubic yards of soil and for test purposes (therefore, there
				  will be one overall composite sample and one set of fingerprint tests for each
				  100 cubic yards of soil, or portion thereof).
b. Fingerprint tests should be performed on a
				  portion of each overall composite sample, with the results compared to the lab
				  test results on generator site samples. If there is significant comparison
				  differences for any of the composite samples, then the fingerprint tests should
				  be repeated on the remaining portion of each composite sample, where results
				  differed. A "significant comparison difference" shall mean, considerably lower
				  flashpoints or considerably higher PCB levels in the fingerprint samples (per
				  discretion of processor) and definitely any samples indicating flashpoints less
				  than 100ºF or PCB levels greater than 50 ppm. If any of the repeat
				  fingerprint tests verifies significant comparison difference for any of the
				  composite samples, then the processor has options as follows:
(1) Reject all truck loads from that
				  generator site or
(2) Perform a
				  full scan of lab tests on each composite sample with significant comparison
				  differences per above. If any of these full scan lab tests indicate the
				  presence of hazardous waste or the presence of a material the processor is not
				  permitted to accept, then the processor shall reject all truck loads from that
				  site.
c. For any site
				  requiring 'X' or more truck loads or 'X' cubic yards (or more) of waste to be
				  processed, whichever is smaller, there shall be at least one full scan lab test
				  performed on one of the composited samples from five truck loads, per above. If
				  test results indicate the presence of hazardous waste or the presence of a
				  material the processor is not permitted to accept, then the processor shall
				  reject all truck loads from that site. (The processor shall propose appropriate
				  criteria for this test to be triggered, i.e., define 'X' in the limits above
				  and discuss reasons for selection of these limits.)
5. If the processor's facility design and
				  operating procedures are such that segregation of portion(s) of a generator's
				  soil is maintained, after sampling for fingerprint analysis and until
				  fingerprint tests on that soil are completed, then the following options apply:
a. The processor may use the procedures
				  exactly as described in §§
												6.8(A)(4)(a) through
				  (b) of this Part above or
b. The processor may use a modified version
				  of in §§
												6.8(A)(4)(a) through
				  (b) of this Part as follows:
(1) Composite samples from approximately five
				  truck loads or from all truck loads in a given segregated holding area, (but
				  from no more than 100 yd3 of soil), shall be
				  composited into one overall composite sample for test purposes. (Therefore,
				  there will be one overall composite sample and one set of fingerprint tests for
				  a maximum of each 100 yd3 of soil.)
(2) Fingerprint tests shall be performed on a
				  portion of each overall composite sample, with the results compared to the lab
				  test results on generator site samples. If there is significant comparison
				  differences for any of the composite samples, then the fingerprint tests shall
				  be repeated on the remaining portion of each composite sample, where results
				  differed. If any of the repeat fingerprint tests verifies significant
				  comparison differences for any of the composite samples, then the processor has
				  options as follows:
(AA) Reject all truck
				  loads from that generator site or
(BB) Reject all truck loads from the
				  segregated holding area(s) associated with each of the composite samples that
				  tested significantly different.
(CC) Perform a full scan of lab tests on each
				  composite sample with significant comparison differences per above. If any of
				  these full scan lab tests indicate the presence of hazardous waste or the
				  presence of a material the processor is not permitted to accept, then the
				  processor has the option of rejecting all truck loads from that site, or at
				  minimum, rejecting all truck loads from the segregated holding area(s)
				  associated with each composite sample that test positively for hazardous waste
				  characteristics or unacceptable material, per above.
c. For any site
				  requiring 'X' or more truck loads or 'X' cubic yards (or more) of waste to be
				  processed, whichever is smaller, there shall be at least one full scan lab test
				  performed on one of the composited samples from five truck loads, per above. If
				  test results indicate the presence of hazardous waste or presence of a material
				  the processor is not permitted to accept, then the processor shall have the
				  option of rejecting all truck loads from that site, or at minimum, rejecting
				  all truck loads from the segregated holding area(s) associated with that
				  composite sample and performing additional full scan lab tests on the other
				  composite samples. (The processor shall propose appropriate criteria for this
				  test to be triggered, i.e., define 'X' in the limits above and discuss
				  revisions for selection of these limits.)