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Home My WebLink About2019-05-31 Soil Stockpile Work PlanSTOCKPILED SOIL SAMPLING WORK PLAN ASHEVILLE STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC. 526 SOUTH CHURCH STREET/ECI3K CHARLOTTE, NORTH CAROLINA 28202 ('DUKE ENERGY Waste & Groundwater Programs May 31, 2019 Stockpiled Soil Sampling Plan May 31, 2019 Asheville Steam Electric Plant TABLE OF CONTENTS SECTION PAGE 1.0 PURPOSE.....................................................................................................................1 2.0 SOIL SAMPLING METHODOLOGY.................................................................................1 2.1 Method Summary........................................................................................................... 1 2.1.1 Collection of Representative Samples...................................................................... 2 2.1.2 Sample Preservation, Containers, Handling and Storage ......................................... 2 2.1.3 Decontamination...................................................................................................... 3 3.0 SOIL SAMPLING AND ANALYSIS................................................................................... 3 3.1 Soil Sampling................................................................................................................... 3 3.2 Sample Analysis............................................................................................................... 3 4.0 DOCUMENTATION.......................................................................................................3 5.0 TABLES/FIGURES.........................................................................................................4 TABLE 1— SOIL PARAMETERS AND ANALYTICAL METHODS ............................................... 4 FIGURE 1— SOIL STOCKPILE SAMPLING MAP..................................................................... 5 i Stockpiled Soil Sampling Plan May 31, 2019 Asheville Steam Electric Plant 1.0 PURPOSE The purpose of this Stockpiled Soil Sampling Work Plan (Plan) is to provide a method for collecting and analyzing soil samples from the soil stockpile at the Asheville Steam Electric Plant (Plant) in Buncombe County, NC. The soil stockpile, as shown in Figure 1, is an estimated 10,000 cubic yards (cy) and includes material from the former 1982 Ash Basin dam and excavated soils from a cleared area east of the former 1982 Ash Basin, outside of the waste boundary. Duke Energy Progress, LLC (Duke Energy) proposes to reuse the stockpiled soil for on -site and off -site projects. 2.0 SOIL SAMPLING METHODOLOGY 2.1 Method Summary This Soil Sampling Work Plan has been adapted from Environmental Protection Agency (EPA) Standard Operating Procedures (SOPS) #2012 and #2006. Soil samples are collected directly using stainless steel or plastic trowel, spade, shovel, or scoops and a Geo-probe° or hand auger for samples at various depths. Following collection, soil is transferred from the sampling device to a stainless steel or plastic bowl to be homogenized. Once homogenized, the soil is transferred into Duke Energy Laboratory supplied sample bottles. Soil samples will be submitted under chain of custody for the following analyses: total metals and Synthetic Precipitation Leaching Procedure (SPLP) metals. Analytical methods for total metals and SPLP metals are described in Table 1. Equipment • Sample containers —To be supplied by Duke Energy Laboratory with appropriate cooler(s). Estimated that five (5) 8-ounce sample bottles with Teflon -lined lids will be required for each sample location and sample depth. For return of cooler to the lab, ice will be required. • Gloves — used for personal protection and to prevent cross -contamination of samples — nitrile, disposable, powderless. • Field clothing and Personal Protective Equipment — used as specified in the site Health and Safety Plan. • Sampling flags — used for identifying soil sampling locations. • Field notebook — a bound book used to record progress of sampling effort and record any problems and field observations during sampling. • Three-ring binder book — used to store necessary forms and record and track samples collected at the site. Stockpiled Soil Sampling Plan May 31, 2019 Asheville Steam Electric Plant • Permanent marking pen — used to label sample containers, document field logbooks, data sheets and chain of custody. • Stainless steel or plastic spoon — used for homogenizing soil samples within a stainless steel or plastic bowl. • Stainless steel or plastic bowl — used for homogenizing soil samples, when applicable. • Camera — used for photo -documentation of sample locations and samples. • Trash bag — used to dispose of gloves and any other non -hazardous waste generated during sampling. • Decontamination supplies and equipment. 2.1.1 Collection of Representative Samples All sampling equipment will be decontaminated prior to use. The following procedure will be used to collect each soil sample with a geo-probe: • Locate general sampling locations and record coordinates with a GPS unit. Collect a soil column at each designated sampling location using a Geo-probe° or hand auger. Combine sample "a" with sample "b" (Shown in Figure 1) in mixing bowl and thoroughly mix. • Transfer to the sample bottles and secure sample bottles tightly. 2.1.2 Sample Preservation, Containers, Handling and Storage Chemical preservation of soils is generally not recommended. Cooling to 4°C on wet ice is usually the best approach, supplemented by the appropriate holding time for the analyses requested. The Duke Energy Laboratory will supply the appropriate sample bottles for the collected soil samples. The sample volume is a function of the analytical requirements and the Duke Energy Laboratory will ensure the appropriate number of bottles are supplied. Ensure chain of custody is completed for sample bottle return to the Duke Energy Laboratory. Table 1 contains a list of parameters to be analyzed with corresponding reporting units and analytical methods. If a parameter or group of parameters is not included in Table 1, the laboratory performing the analysis should be contacted to determine the appropriate sample bottles, volumes, and preservatives. All non -dedicated sampling devices should be decontaminated and wrapped in plastic. The sampling device should remain in this wrapping until it is needed. Each sampling device should be used for only one sample and then decontaminated or disposed of. Non -dedicated sampling devices should be cleaned in the field using the decontamination procedure described below. 2 Stockpiled Soil Sampling Plan May 31, 2019 Asheville Steam Electric Plant 2.1.3 Decontamination Decontamination procedures can be time consuming; having a sufficient quantity of sampling tools available is recommended. All non -dedicated sampling equipment must be decontaminated prior to reuse. Equipment decontamination consists of: 1. Detergent wash and brush cleaning 2. Tap water rinse 3. De -ionized water rinse 4. Air dry 5. Wrap sampling tools with plastic 3.0 SOIL SAMPLING AND ANALYSIS 3.1 Soil Sampling Sample locations will be collected in a manner similar to UST Guidelines for Sampling. Six (6) distinct samples will be collected for every 12,000 cy of soil at varying depths and will be compiled into one composite sample for analysis. The approximate sample locations and depths are shown in Figure 1. 3.2 Sample Analysis The composite samples will be sent to the Duke Energy Laboratory for analysis of total metals and SPLP metals. The lab will test for the inorganic compounds listed in Table 1. The results will be compared to site background levels, and any exceedances of background concentrations will be compared to Industrial/Commercial Preliminary Soil Remediation Goals (PSRG) set forth by NCDEQ. The analytical data will be shared with NCDEQ Division of Waste Management (DWM) for approval prior to the reuse and relocation of the material. 4.0 DOCUMENTATION A comprehensive report will be submitted to NCDEQ DWM, Solid Waste Section and include the associated lab reports. If an exceedance is found when data is compared to Industrial/Commercial PSRG levels, then Duke Energy will discuss further action and/or additional sampling plans with NCDEQ. 3 Stockpiled Soil Sampling Plan May 31, 2019 Asheville Steam Electric Plant 5.0 TABLES/FIGURES TABLE 1— SOIL PARAMETERS AND ANALYTICAL METHODS INORGANIC COMPOUNDS UNITS METHODI Aluminum mg/kg or µg/I EPA 6010D Antimony mg/kg or µg/I EPA 6020E Arsenic mg/kg or µg/I EPA 6020E Barium mg/kg or µg/I EPA 6010D Beryllium mg/kg or µg/I EPA 6020B Boron mg/kg or µg/I EPA 6010D Cadmium mg/kg or µg/I EPA 6020B Calcium mg/kg or µg/I EPA 6010D Chloride mg/kg or µg/I EPA 9056A Chromium mg/kg or µg/I EPA 6010D Cobalt mg/kg or µg/I EPA 6020E Copper mg/kg or µg/I EPA 6010D Hexavalent Chromium mg/kg or µ EPA Methodg/I 7199/218.7 Iron mg/kg or µg/I EPA 6010D Lead mg/kg or µg/I EPA 6020E Magnesium mg/kg or µg/I EPA 6010D Manganese mg/kg or µg/I EPA 6010D Mercury mg/kg or µg/I EPA Method 7470A/7471B Molybdenum mg/kg or µg/I EPA 6010D Nickel mg/kg or µg/I EPA 6010D Nitrate as Nitrogen mg/kg or µg/I EPA 9056A pH SU EPA 9045D Potassium mg/kg or µg/I EPA 6010D Selenium mg/kg or µg/I EPA 6020E Silver mg/kg or µg/I EPA 6020E Sodium mg/kg or µg/I EPA 6010D Strontium mg/kg or µg/I EPA 6010D Sulfate mg/kg or µg/I EPA 9056A Thallium (low level) (SPLP Extract only) mg/kg or µg/I EPA 6020E Vanadium mg/kg or µg/I EPA 6020E Zinc mg/kg or µg/I EPA 6010D Notes: 1. Soil samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045, as noted above (or similar approved methods). Soil samples will also be analyzed for leaching potential using SPLP Extraction Method 1312 in conjunction with USEPA Methods 6010/6020 (or similar approved methods). 11 Stockpiled Soil Sampling Plan May 31, 2019 Asheville Steam Electric Plant FIGURE 1- SOIL STOCKPILE SAMPLING MAP 5