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Home My WebLink AboutAS-88553_96882_CA_IAR_20221116 Environmental Consultants-Soil and Groundwater Specialists P.O. Box 1379, Huntersville, North Carolina 28070 Phone: (704) 237-4209 · www.lighthousetechcorp.com November 16, 2022 Mr. Tim King Crete Carrier Corporation P.O Box 81228 Lincoln, Nebraska 68501 Re: Initial Site Assessment Report Crete Carrier Corporation-Diesel Fuel Spill October 26, 2022 200 Walmart Drive Shelby, North Carolina Cleveland County Dear Mr. King In conjunction with cleanup efforts by CERT of Charlotte, North Carolina, Lighthouse Technical completed an initial assessment of the impact to soil from the spill of diesel fuel noted above. The results of the post excavation soil analyses are included with this report. If you have questions, please contact us at 704-237-4209. Sincerely, Lighthouse Technical, P.C. Steven B. Lucas, L.G. Environmental Geologist cc Asheville Regional Office 3 B. Site History and Impact On October 26, 2022, a Crete Carrier Corporation tractor trailer hit an object in the roadway puncturing the vehicles saddle tank. The accident caused a spill of diesel fuel where the vehicle stopped near the entrance to a warehouse at 200 Walmart Drive in Shelby, North Carolina. The exact amount of diesel fuel spilled is unknown, however officials on scene estimated the release at 30 gallons. Figures 1 and 2 illustrate the location of the spill. C. Initial Response and Abatement Action The spilled diesel fuel was absorbed by the soil on the shoulder of the road. No free product was recovered. No significant overland flow occurred. CERT of Charlotte, North Carolina was mobilized to the site. Their crew placed absorbent pads and booms around the spill area until soil excavation could be scheduled. D. Free Product Investigation No ongoing free product recovery was necessary. E. Surface Water Investigation and Groundwater No surface water was affected by the spill. The nearest surface water is Brushy Creek located approximately 500-600 feet east of the spill location. A retention pond for the facility was located approximately 200 feet west of the site. No impact was noted in the retention pond area. No water supply wells were noted within our line of sight from the spill location. No groundwater collected in the excavation as soil was excavated. F. Excavation of Contaminated Soil After receiving authorization for further site work, CERT mobilized on November 3, 2022, to excavate the impacted soil. Lighthouse was on site to collect post excavation soil samples. The impacted area measured 40 feet long and 3 feet wide. The excavation depth was approximately 1.0 feet. Underground utilities were marked near the excavation but not encountered during soil removal. Samples S-1 through S-3 were collected using a decontaminated stainless-steel hand auger or spade. To field evaluate each sample for petroleum content, a portion of soil from each sample was placed in a new plastic bag and allowed to sit for ten minutes. A head space air reading was recorded using a photo ionization detector (PID). The readings are shown on Table 1. Head space analysis with field meters such as a PID, can provide an indication of petroleum content in the soil. Field soil evaluations are necessary to guide the removal of impacted soil. Once acceptable PID readings were obtained, additional sample was placed in laboratory supplied containers and labeled. Each sample was analyzed by RED Lab, LLC using a QED UVF petroleum analyzer for Total Petroleum Hydrocarbon-Gasoline Range Organics (TPH-GRO), Diesel Range Organics (TPH-DRO) and Total BTEX. The TPH results are illustrated on Table 1. The GRO results ranged from <0.35 to <0.61 mg/kg. The TPH GRO levels were below the state action level of 50 mg/kg. The DRO results ranged from 1.4 to 6.7 mg/kg. The TPH DRO results were below the state s TPH 4 action level of 100 mg/kg. Appendix A includes the Red Lab report. Figure 3 illustrates the location of the impacted area and the soil sample locations. G. Soil Disposal CERT organized disposal of the impacted soil. The total amount of excavated soil was 20.48 tons. CERT transported the waste to Soil Solutions of the Carolinas, located in Shelby, North Carolina. Appendix B includes the waste disposal documentation provided by CERT. H. Conclusion A Crete Carrier Corporation truck struck an object in the roadway causing diesel fuel to spill at the entrance to a warehouse at 200 Walmart Drive in Shelby, North Carolina. The release affected soil on the shoulder of the road. No waterways were impacted. No storm drains were noted near the areas of impact. After soil removal, post excavation soil samples were collected. The post excavation soil sample laboratory analysis results for TPH GRO and DRO were below the state TPH action levels. This indicates the soil impacted by diesel fuel has been removed. No groundwater was observed in the excavation. We recommend closure for the incident. A copy of this report will be submitted to the NCDEQ Asheville Regional Office. They will evaluate the results of the assessment and respond accordingly. I. Report Limitations This report has been prepared by Lighthouse Technical, P.C. for the use of Crete Carrier Corporation, and the North Carolina Department of Environment Quality. The findings and technical interpretations included in this report are specific to the area of investigation. This assessment of subsurface conditions has been performed in accordance with generally accepted practices of assessing the subsurface for contaminants. The conclusions presented in this report are based on subsurface sampling performed at selected locations and depths. The data collected represents the conditions at the sample location, at the time of sample collection only. There may be conditions between borings or samples that differ from those presented in this report. Such conditions could not be predicted by this assessment. Lighthouse by virtue of providing the services described in this report, does not assume the responsibility of the person(s) in charge of the site, or otherwise undertake the responsibility for reporting to any Local, State, or Federal public agencies as required by law or otherwise to disclose, in a timely manner, unless so directed by the client, any information that may be necessary to prevent any danger to public health, safety, or the environment. No warranty expressed or implied is made by the preparation of this report. Table 1 UVF TPH-GRO (mg/kg) UVF TPH-DRO (mg/kg) 50 mg/kg 100 mg/kg S-1 11/3/2022 1.0 1.3 <0.61 <0.61 6.7 S-2 11/3/2022 1.0 2.3 <0.35 <0.35 1.4 S-3 11/3/2022 1.0 1.5 <0.35 <0.35 2.1 Notes: BTEX-benzene, toluene, ethylbenzene, xylene mg/kg-Milligrams per kilogram UVF-Ultraviolet Florescence PPM-Parts per million (mg/kg) TPH-GRO-Total Petroleum Hydrocarbon-Gasoline Range Organic TPH-DRO-Total Petroleum Hydrocarbon-Diesel Range Organic Shelby, North Carolina Summary of Soil Sample Laboratory Analysis Crete Carrier Corporation-Diesel Fuel Spill Sample ID Date Sampled Sample Depth (ft.) PID Reading (PPM)State Action Level Total BTEX (mg/kg) Figure 1 Crete Carrier Corporation -Diesel Fuel Spill 200 Walmart Drive Shelby, North Carolina Spill Location Figure 2 Crete Carrier Corporation -Diesel Fuel Spill 200 Walmart Drive Shelby, North Carolina Spill Location Environmental Consultants Soil and Groundwater Specialists Figure 3 Soil Sample Locations Post Excavation