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Home My WebLink AboutMO-88903_96932_CA_O_20230125 ATTACHMENT A Drawing / Project Name Client Project # Date N Base diagram from Google Earth. Site Location Diagram Soil Assessment 4718 Mountain Creek Ave.; Denver, North Carolina Arnold and Smith, LLP DB Fig. Scale 611001 Not to Scale March 2022 1 PM PG JB PE JB JB Site Location Drawing / Project Name Client Project # Date N Base diagram from Google Earth. Site Features Diagram Soil Assessment 4718 Mountain Creek Ave.; Denver, North Carolina Arnold and Smith, LLP DB Fig. Scale 611001 As Shown October 2022 2 PM PG JB PE JB JB Approximate Scale feet 0 60 30 Areas of Heavily Stained Soil Area Formerly Occupied by Atlantic Coast Fire Trucks Soil sample location Drawing / Project Name Client Project # Date N Base diagram from Google Earth. Soil Sample Location Diagram (9/29/2022) Soil Assessment 4718 Mountain Creek Ave.; Denver, North Carolina Arnold and Smith, LLC DB Fig. Scale 611001 As Shown October 2022 3 PM PG JB PE JB JB Approximate Scale feet 0 50 25 Stained Areas Sampling Area (9/29/2022 ATTACHMENT B Photograph Number 1: Interior of building and area of concrete removal. Photograph Number 2: Closer view of area of concrete removal, showing expansion joint and cracks. Photograph Number 3: Saw cutting of concrete. Note the cut was a “dry” cut. Photograph Number 4: Saw cutting of concrete. Note the cut was a “dry” cut. Photograph Number 5: Removal of concrete. Photograph Number 6: Removal of concrete. Photograph Number 7: Removal of concrete. Note staining on underside of concrete and oil on the plastic vapor barrier. Photograph Number 8: Staining on underside of concrete. Photograph Number 9: Gravel base course under concrete and vapor barrier. Note staining on underside of concrete, and oil on top and bottom of the plastic vapor barrier. Photograph Number 10: Oil on the plastic vapor barrier. This was containerized and submitted for laboratory analysis. Photograph Number 11: Gravel base course under concrete after removal of the plastic vapor barrier. Photograph Number 12: Red-orange silty clay soil beneath gravel base course. ATTACHMENT C Collection DateDepth of Collection (feet BGS)SL-1 9/29/2022 Surface 33.4299.7SL-1A 9/29/2022 0.5 2.1 11Plastic 9/29/2022 na 39.2482.450 100Notes:Bold denotes concentration equal to or greater than State Action Limits.NCDEQ State Action LimitTable 1Summary of Analytical DataRedLab UVF (mg/Kg)Gasoline Range Organics Diesel Range OrganicsHES Project #611001Site Assessment - Denver, North CarolinaArnold and Smith, LLPAnalytical Method (e.g., VOC by EPA 8260B)Constituent of ConcernSample ID Number ATTACHMENT D Hydrocarbon Analysis Results Client:HIGHLANDS Samples taken Thursday, September 29, 2022 Address:RALEIGH, NC Samples extracted Thursday, September 29, 2022 Samples analysed Monday, October 3, 2022 Contact:JOE BEAMAN Operator TORI KELLY Project:#611001 13 U04049 Matrix Sample ID Dilution used BTEX (C6 - C9) GRO (C5 - C10) DRO (C10 - C35) TPH (C5 - C35) Total Aromatics (C10-C35) 16 EPA PAHs BaP HC Fingerprint Match % light % mid % heavy s SL-1 23.4 <0.59 33.4 299.7 333.1 26.9 2.9 <0.023 80.6 17.6 1.8 Waste Oil 81.3%,(FCM) s SL-1A 15.1 <0.38 2.1 9.3 11.4 0.29 <0.12 <0.015 94.7 4.3 1 Waste Oil 58.8%,(FCM),(P) Initial Calibrator QC check OK Final FCM QC Check OK 98.4 % Results generated by a QED HC-1 analyser. Concentration values in mg/kg for soil samples and mg/L for water samples. Soil values are not corrected for moisture or stone content Fingerprints provide a tentative hydrocarbon identification. The abbreviations are:- FCM = Results calculated using Fundamental Calibration Mode : % = confidence for sample fingerprint match to library (SBS) or (LBS) = Site Specific or Library Background Subtraction applied to result : (PFM) = Poor Fingerprint Match : (T) = Turbid : (P) = Particulate present Ratios Hydrocarbon Analysis Results Client:HIGHLANDS Samples taken Thursday, September 29, 2022 Address:RALEIGH, NC Samples extracted Thursday, September 29, 2022 Samples analysed Tuesday, October 4, 2022 Contact:JOE BEAMAN Operator TORI KELLY Project:#611001 1 U04049 Matrix Sample ID Dilution used BTEX (C6 - C9) GRO (C5 - C10) DRO (C10 - C35) TPH (C5 - C35) Total Aromatics (C10-C35) 16 EPA PAHs BaP HC Fingerprint Match % light % mid % heavy s Plastic 29.2 <0.73 39.2 482.4 521.6 53.1 5.6 <0.029 69.6 27.6 2.8 Waste Oil 67.8%,(FCM) Initial Calibrator QC check OK Final FCM QC Check OK 101.3 % Results generated by a QED HC-1 analyser. Concentration values in mg/kg for soil samples and mg/L for water samples. Soil values are not corrected for moisture or stone content Fingerprints provide a tentative hydrocarbon identification. The abbreviations are:- FCM = Results calculated using Fundamental Calibration Mode : % = confidence for sample fingerprint match to library (SBS) or (LBS) = Site Specific or Library Background Subtraction applied to result : (PFM) = Poor Fingerprint Match : (T) = Turbid : (P) = Particulate present Ratios