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)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 orb. 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.)250 R.I. Code R. 250-RICR-140-05-6.8
Amended effective4/22/2020