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HomeMy WebLinkAboutNCD003446721_19880510_Celeanse Corporation - Shelby Fiber_FRBCERCLA RD_Proposed Characterization - Treatment Technology Study Revision 1 March 1988-OCRI I I I I I I I I I I I I I I I I I I UNITED STATES ENVIRONMENT~L PROTECTION AGENCY REGION IV MAY 10 1988 4WD-SFB Ms. Lee Crosby NC. Dept. of Human Resources P.O.Box 2091 Raleigh, NC 27602 RE: Celanese Fibers Operations Shelby, North Carolina Dear Ms. Crosby: 345 COURTLAND STREET ATLANTA, GEORGIA 30315 Please find enclosed copies of the following documents; the final Celanese Record of Decision, and the proposed Characterization/Treatment Technology Study prepared by S&ME for Celanese. These two documents should bring your files on the Subject Site up to date. If you have any questions or comnents, please call me. Sincerely, M:~ Michelle Glenn Superfund Project Manager Enclosures . , • ~ I' • • 1.·. I I I I I I I I I I I I I I I I I I Proposed Characterization/ Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document Control No. 85050D-0085 Prepared by S&ME, Inc. Revision 1, March 15, 1988 ; I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1 1 Page 1 1.0 Introduction This work plan is submitted to develop design data for the extraction and treatment proposed as the preferred remedial alternative for the ground-water operable unit, to further characterize the contamination source, and to evaluate and test treatment technologies for remediation of the source materials. The work is divided into the following segments. o Pump Test Conduct a pump test to estimate the aquifer's hydraulic parameters for design of the proposed ground-water extraction system and for use in the design of the ground-water extraction treatment system. o Ground-Water Treatability Determine biodegrability of most contaminated ground water, and evaluate the effectiveness of air stripping and carbon adsorption to remove the residual organic compounds. o Materials Characterization Investigation Further determination of the chemical and physical characteristics of the material present in the glycol recovery unit (GRU} sludge pits and adjacent areas. I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1, Page 2 o Materials Handling Investigation Evaluate equipment and techniques for physically handling the materials in the glycol recovery unit sludge pits, burn pits and other contaminated source areas at the site. o Soil/Sludge Treatment Technology Evaluation Conduct laboratory and bench scale investigations to evaluate the efficiency of the potentially viable treatment technologies previously discussed in the Feasibility Study Report. 2.0 Background Information 2.1 Ground Water The RI performed at the site has shown that various levels of ground-water contamination exist. The area in the vicinity of the GRU and burn pits has shown the higher level of contamination. The more highly contaminated water appears to be limited to the area west of the emergency ponds in the wastewater treatment plant area. Data from the monitor wells located east of the wastewater treatment plant show much lower to no contamination from the plant operations. Analysis of ground-water samples near the source showed several organic compounds including ketones, phthalates, and several non-identified chemicals not on EPA's Hazardous Substance List (HSL) and possibly some elevated levels of·inorganic compounds such as chromium. Ground water in this area has a total organic I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1 1 Page 3 carbon (TOC) loading between 3000 and 5000 mg/1 (ppm) and a specific conductance between 4500 and 5500 micromho/cm. Ground water near the site periphery has sporadically shown some· organic compounds, but has TOC values of less than 15 mg/1 and has generally showed specific conductance values of less than 200 mg/1. 2.2 Source Material Due to the uniqueness of the physical nature of the buried GRU sludges, a better understanding of the physical properties and handling characteristics is essential to making appropriate remedial technology recommendations. In addition to the material handling investigations, a further detailed chemical characterization of the soil/sludge materials will be conducted during this period. This investigation will provide information with regard to the consistency, uniformity; and make-up of the various materials present. Based on the available data, the physical consistency of the GRU sludges ranges from a toothpaste like material to a coarser grained, reduced moisture type of material similar in nature and physical appearance to common spackling compound when it starts to become dry. Preliminary analytical results have shown the material to have a Chemical oxygen Demand (cod) in excess of 1,000,000 mg/1. Ethylene glycol concentrations have been found to range between zero and 390,000 mg/1. A single BTU value I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1 1 Page 4 analysis showed a value of between 3,900 and 5,000 BTUs per pound. 2.3 Summary of Feasibility study The FS concluded that the preferred alternative for ground-water remediation would be extraction from two lines of pumping wells with their discharge pumped to a conveniently located treatment facility designed to treat the anticipated flow rate and water quality. To provide design data for this system, information is needed on the aquifer's hydraulic parameters and on water quality. Data on the aquifer parameters will be provided from pumping tests on wells located along the proposed alignments of the extraction systems. These points will also be used for collecting ground-water samples for treatability analysis. To date no treatability investigations have been conducted. The technologies were selected for further evaluation based on their overall effectiveness, suitability, degree of treatment provided, and implementability from literature documenting their effectiveness at other sites. The various treatment technologies retained for further evaluation during this investigative phase were then divided into subgroups for ground water and source materials. Within each subgroup a limited number of alternatives were identified for study as listed below: I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1, Page 5 o ground-water remediation -air stripping activated carbon adsorption -liquid biological treatment o soil/sludge remediation -thermal destruction rotary kiln incineration fluidized bed incineration wet air oxidation -biological treatment composting liquid biological treatment -combined physical, chemical and biological treatment system 3.0 Proposed Evaluation Work Plan 3.1 Ground water Pump Test and Treatability studies 3.1.1 Pump Test Two pump tests will be conducted to estimate the aquifer's hydraulic parameters, aid in design of the ground-water extraction system, and provide samples for water quality analysis and treatability studies. These tests will be performed on 4-inch extraction wells installed in locations to be incorporated into the remedial I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1, Page 6 action program. One well will become part of the interior extraction system or the Tier II wells and will be located in the waste management area near the K, V, and O wells. The second well will become part of the exterior extraction system or the Tier I wells. This well will be located near the eastern property boundary between the FF and GG wells. Figure 5-1 from the FS is reproduced here as Figure 1 and shows the approximate locations of the pump test wells. Three additional 2-inch PVC monitor wells will be installed in the vicinity of the extraction well in the waste management area, and five observation wells will be installed near the exterior extraction well. These will supplement the existing monitor wells in the vicinity of the extraction wells for monitoring water levels during the pumping and recovery cycles of the test. The pump tests will be run separately on consecutive weeks. The extraction wells will be equipped with an electrical submersible pump, and the pumped water will be piped into the plant's wastewater treatment system. The wells will be equipped with pressure transducers for recording water levels. These transducers transmit data to a central recording station for storage. After completion of the tests, the data are transferred electronically to a micro-computer for reduction and evaluation. The pump tests are planned to be at least 72 hours I I I 1· .. ·· •••• • I I I I I I . I I :I I I.· .. • ····•. •.. ·:·.· I I \ \ I I V ' ") I I I I I \ I) ,' RE CREA TIOI~ \ \\ II II - l PONDJ ~ ~ . -~-~~- I ,_ - \ ) \ --~ E -~- 1/A • 1/,,, / ,._,,, I <( \~~ ' tlOTE : TIIE BURN PITS.GLYCOL RECOVERY SLUDGE PITS AND AREA OF GRU SLUDGE TRACKltlG WERE T AKEi~ FROM HISTORICAL AERIAL PHOTOS. ,, PERIMETER EXTRACTION WELLS • FF 0 \ l •M LEGEND • EXISTING l,lOHITOR WELL @ EXTRACTION WELL (PUMP TESTI ~ BURN PIT • GLYCOL RECOVERY SLUDGE PIT ~ AREA OF GRU SLUDGE r TRACKIIJG (SMEARING) E -EQUALIZATION BASltl C -CLARIFIER D -DIGESTER AB -AERATION BASIN SP -SLUDGE POt~D EP EMERGEHCY POND PP POLISHING . POND N SCALE <FEET> O 1~0 JOO L J I C i g " 0 I j ,:g UJ J ;i::" "' . ~ ti ~ ... UJ z . ... ► ~ C m ..... w ..J m ·w"'UJO 0 iii -, '.a:Q._UJ ~ 0 0 :! 1L[!'.;1)! I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology study CFO/Shelby, North Carolina S&ME Job No. 4124-85-0SOD Document No. 85050D-0085 Revision 1 1 Page 8 to stress the aquifer and provide a better estimate of long-term pumping performance. Samples will be collected from the pumping wells prior to pump testing for selected HSL parameter analyses for treatment system design. Additionally, samples will be taken periodically through the test for pH and conductivity analysis. These readings will be made on a JO-minute frequency for the first 6 hours, and every 2 hours thereafter. The results of these pump tests will be used to estimate the aquifer's hydraulic parameters. These hydraulic parameters will be used in the design of the proposed extraction system. Additionally, they will be used in setting up a pressure model to simulate the effects of the proposed extraction system on existing ground-water conditions. The model intended for use is the McDonald and Harbaugh "Modular Three-Dimensional Finite Difference Ground-Water Flow Model" (MODFLOW). The data available from the water quality analysis will be used to supplement the existing data from the monitor well system to provide a first approximation of the influent quality to the ground-water treatment systems. These data may be supplemented with time to set up and calibrate the Knoikow and Bredehoeft computer model of "Two-Dimensional Solute Transport and Dispersion in Ground Water'' (M.O.C.). I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1, Page 9 3.1.2 Ground Water Treatment A limited number of technologies will be investigated with respect to the treatment of the discharges from the two tiers of ground-water recovery wells. Present data indicate that satisfactory treatment of the discharges from the perimeter system should be obtained using air stripping followed by activated carbon adsorption. The interior tier would use biological treatment and air stripping along with carbon adsorption. The reason for the difference in treatment schemes is the higher concentration of organics being removed by the interior tier of extraction wells. In both systems, the carbon adsorption is provided as "safe-guard" for final treatment. Initial evaluations of liquid biological technologies (PAC) and activated carbon adsorption will include the running of appropriate adsorption isotherms for the determination of the proper carbon dosages. Isotherm determination in conjunction with laboratory and possibly field scale evaluations will enable a cost effective determination to be made regarding the feasibility of carbon adsorption and carbon regeneration for a full-sale operation. Use of air stripping as treatment process is expected to handle the concentrations of volatile and a portion of the semi-volatile compounds that exist in the exterior tier of the ground-water recovery systems. The activated carbon adsorption system will function as a "safe guard" step in case some organic I I I I I I I I I I I I I I I I - I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-0SOD Document No. 85050D-0085 Revision 1. Page 10 compounds remain after the air stripping. Furthermore, carbon adsorption has been shown to be particularly effective in removing heavy metals such as those indicated by the ground-water analysis from the site monitor wells. The carbon from the carbon adsorption unit will be utilized on a throw away basis until utilization quantities or breakthrough frequency supports either on-site or off-site regeneration. Since air stripping and activated carbon adsorption are considered conventional and widely accepted treatment technologies it is felt that laboratory or field investigations will not be necessary to augment the present level of knowledge. Determinations as to the feasibility and use will be based on suppliers input, presently available literature and experience, along with additional data generated in conjunction with the ongoing characterization studies. However, a treatability study will be performed for the biological treatment system planned for ground water for the inner tier of extraction wells. 3.2 Physical/Chemical Materials Characterization Further evaluation and determination of the location, physical characteristics, and chemical composition of the contamination source materials will be provided by sampling the waste for: o visual characterization and physical description o chemical characterization through laboratory analyses I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1 1 Page 11 3.2.1 Sampling for visual characterization and physical description To further identify the location and physical characteristics of the materials in the source area, approximately 106 borings will be drilled and sampled on a 50-foot grid pattern (see Figure 2). Close observation of the physical uniformity and consistency of the samples will be made and recorded during their collection. The data collected from these borings will be used to calculate a better estimate of the volume, location and diversity of the probable source materials. All samples collected will be visually described and stored in appropriately maintained core boxes for later examination until this phase of the investigation has been completed. In order to expedite drilling these borings, no decontamination of the drilling equipment will be performed between borings. These borings will be continuously sampled using procedures similar to the standard penetration test. Each of the borings will be considered completed when residual soils are encountered. It is anticipated that the depth of these borings will range from 5 feet to 15 feet, and an average depth of 10 feet is-used for estimating purposes. All borings will be backfilled upon completion with cuttings from the borehole. ------------------- l/J n -q ·u -----.1 ~ -q O :u ci :;::o:uoc r'l ·u .::o ,·uorr1 c_ :r.: Ul 0 (/) ··< f11 1-.J tU :t: Vl CJ 111 ---4. , .. 0 w 0 lU ~ O . -< ;u "" 0 =--• --z 1--> :L G) I• )> ' :u ·u lD ).. :,U (11 0 0 I r;t G) ~ :,.u ;tJ o fl~ 0 :,, ::! 0 z I I ,,. --..... I I I ~'--. Ii.._+'', /✓-,r--TP-36- TP-15 -+-/ / __ ..... __ ,1/ ::sTB-9 --- I I I I I ,' ,~+-.a...STB-8 I I '' TP-18 I I I I I I I I ,' '----X I I I' I I I I I\ AB I ,,~,;:<L Jx I I I / I I I ,\I: DX -x I I - \'-\ ~ :\\0~ \ 1,~ , 1 1 STB-13 , I I A. ___./ I/ .GA ~/' TF'-39 A STB-12 TP-23 -+-,,-----------------\ I EP . LEGEND ' ~ ~PROPOSED SOIL BOINO •AB -AERATION BASIN '. C -: CLARli!IER i . EP _· EMERGENCY POND \\ ,, \ \ \ \ \ ' I \ ' I I \ \ \ \ \ '. TP-43 '~, \ -·O I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-O5OD Document No. 85O5OD-OO85 Revision 1, Page 13 Consideration is being given to use of a Microtox TM analyzer for screening representative samples taken from the boreholes drilled for the visual characterization study. This test .. measures the relative toxicity of a sample to luminescent bacteria and would act as a guide for selection of samples for detailed chemical characterization. A decision on use of this tool will be made based on the manufacturer's verification that it is applicable to the contaminant source present at the site. If this decision is not available at the time of the site work, representative samples will be collected in VOA bottles for possible later analysis. 3.2.2 Sampling .for chemical characterization through laboratory analysis The data collected from the physical characterization sampling will be used to identify the location of borings and/or test pits to collect samples for laboratory analysis. The samples will be obtained with a drill rig or a backhoe that is decontaminated using the protocols used during the Remedial Investigation. Samples collected with a drill rig will be obtained by using a Shelby tube or a split-spoon sampler. Backhoe samples will be taken from the backhoe bucket after possible fall-in material from the test pit walls has been carefully scraped away. All excavations or borings will be backfilled upon completion with cuttings from the hole. I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-0SOD Document No. 85050D-0085 Revision 1, Page 14 It is anticipated that 20 samples will be collected for laboratory chemical analysis. If the on-site observations of the material samples show a greater diversity than expected, additional samples analysis may be needed to adequately characterize this material. To follow EPA protocols, which require duplicate samples, equipment blanks and other QA/QC requirements, approximately four extra samples will be analyzed in addition to the 20 samples planned. To allow some contingency in costing, 30 samples are budgeted. Characterization of the samples will consist of measuring the values for the following physical and chemical parameters. These data will supplement the detailed physical descriptions obtained during the sample collection phase of this investigation. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 pH moisture content BTU value organic chloride ethylene glycol percent solids GC/MS scan with library search (TIC) biochemical oxygen demand (BOD) . chemical oxygen demand (COD) total organic carbon (TOC) total kjeldahl nitrogen (TKN) a~onia nitrogen (NH 3 ) nitrate (NO) total phosp~orus (P) orthophosphate (P04 ) heavy metals -antimony -arsenic -barium -cadmium I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1, Page 15 -chromium -lead -mercury -selenium silver o additional specific analysis sampling and collection. 3.3 Materials Handling Investigation as determined during Following the collection and evaluation of the boring samples, a determination of the most representative soil/sludge contaminated area will be made. After selection of the area, additional investigations will be conducted to evaluate the physical handling characteristics of the various materials present. These evaluations will consist of exposing a 4-foot square of the material by carefully stripping back the soil cover until the source material is reached. After uncovering the source material, various methods of handling the materials will be evaluated. These methods will include pumping, dredging, loader handling, and possibly other techniques that appear viable. An important objective of the materials handling investigation will be to develop a system which minimizes the physical handling of the material involved. The overall objective of the material handling investigation is to determine the most efficient method of collecting and transporting the material present in the source area. Minimization of handling of the material is to reduce the potential for surface contamination and personnel exposures during the source removal operations. In addition, the effects I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-0SOD Document No. 85050D-0085 Revision 1, Page 16 of pumping on the liquifiability and flow characteristics of the soil/sludge material will be determined. Specific requirements for the potential treatment technologies being considered-will also be evaluated as part of the materials handling study. The handling characteristics will be evaluated through both on-site and laboratory scale testing. Samples sent off site for evaluation will be done under the appropriate DOT and EPA regulations regarding the transportation and packaging of such materials. 3.4 Soil/Sludge Treatment Technology Evaluation The treatment technologies identified as viable for remediation of the soil/sludge by the FS report will be further investigated in this phase of the project. The additional investigations will consist of laboratory and possibly field evaluations of the various technologies listed and discussed below. A number of technologies identified in the FS Report as potentially viable treatment alternatives have been deleted from further consideration at the present time due to either technological or economic considerations. The methods retained for specific evaluation are: Soil/Sludge Remediation 0 0 thermal destruction biological treatment I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-0SOD Document No. 85050D-0085 Revision 1, Page 17 o combined physical/chemical and biological treatment The technology evaluations during this phase of the investigation will be done with regard to the individual technology, and to combined treatment efficiency for the site specific contaminants, their cost effectiveness, their overall environmental reliability and safety, and their potential for reduction of the contaminant volume, mobility and/or toxicity. J.4.1 Thermal Destruction The thermal destruction techniques being considered for utilization in treating the soil/sludge contamination are: o rotary kiln furnace o fluidized bed furnace o wet air oxidation Evaluation will be done on a laboratory scale to demonstrate their feasibility for handling the contaminant source. This may be followed by larger field scale evaluations, if needed, once the preferred technology has been identified. Larger scale evaluations of any thermal destruction technology being considered for use will be conducted only in the event that sufficient scale-up, treatment efficiency, and reliability evaluations cannot be adequately based on the smaller laboratory scale information. I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-0500 Document No. 850500-0085 Revision 1, Page 18 Selected representative samples collected during the characterization and handling evaluations will be forwarded to previously screened thermal destruction equipment manufacturers to evaluate the applicability of specific technologies to the site wastes. The following characteristics are to be evaluated by each supplier for their technology: 0 0 0 0 0 0 0 0 0 0 0 waste influent characteristics waste effluent (residuals) characteristics destruction rates and efficiencies stack or off-gas characteristics waste volume reductions capital cost estimates operation and maintenance cost estimates regulatory considerations environmental safety and reliability mobility other considerations -EP tox, etc. influent characterizations performed by the equipment suppliers will serve as a cross check on the characterization results obtained during the expanded characterization phase. Waste effluent characterizations and volume reductions will indicate the need for further treatment, and the final disposal method needed for the residuals from the preferred treatment process. The waste Sufficient sample volume will be shipped to the selected suppliers for their evaluation. Samples of the treated material will be returned to S&ME for visual evaluation and, if needed, further characterization. In conjunction with their thermal destruction runs the suppliers involved will also be asked to note specific or special handling requirements needed for use I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1, Page 19 with their individual processes. Laboratory runs of sufficient duration will be conducted to obtain the needed information. Replicates of the runs will be conducted to assure the reliability of the data generated and to evaluate whether further investigations are needed. Rotary kiln incineration will include the evaluation of both single-stage and two-stage systems. In addition, the alternative of pre-heating the soil/sludge material prior to its introduction into a single-stage rotary kiln incinerator will be evaluated as a substitute for the initial stage of a two-stage system if material handling characteristics are acceptable for such a system. The purpose of this evaluation will be to determine the possible reduction in costs, if any, associated with such a system modification. Since the primary function of the initial stage of a two-stage system is for drying the soil/sludge material, replacement of the first stage by pre-heating would appear to have technical merit. Evaluation of the fluidized bed incineration method of thermal destruction will be conducted in a manner similar to that utilized for the rotary kiln technique. Based on the laboratory scale evaluation of the fluidized bed technique additional large scale evaluations may be needed if this technology is selected. The ability of the soil/sludge material to be distributed throughout the fluidized bed, light and heavy fractions, the volume and characteristics of the heavy and light fractioned I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1. Page 20 materials being released by the system, and the specific feed characteristics required, may only be able to be adequately determined through the utilization of a larger scale unit.· This data, if required, would probably be obtained through use of an existing fluidized bed installation as opposed to bringing a larger or full-scale system on site. The evaluation of wet air oxidation will be conducted initially through use of laboratory-scale autoclave tests. Representative samples of the soil/sludge materials will be subjected to autoclave runs at low and intermediate temperature/pressure ranges. Evaluations will be made to determine the potential for autothermal operation of a full-scale unit, stability of the resultant oxidized material, constituents of the processed supernatent liquid, and their associated concentration levels. 3.4.2 Biological Treatment Bioreclamation The bioreclamation technologies evaluations will be performed on laboratory and possibly larger equipment. The larger scale evaluations will be of sufficient size to assure full-scale scale-up problems have been addressed. The composting technology investigation will initially be conducted on a laboratory scale basis.using 55-gallon plastic containers fitted with an appropriate aeration system. Determinations will be made regarding bulking agent percentages, I I I I I I I I I I I I I I I I I I II Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1 1 Page 21 type of bulking materials to be used, acceptable seeding materials, treatment time durations, end products, and other operational parameters. Following evaluation and optimization of the composting technique on a laboratory basis, a larger on-site field scale system may be evaluated. The utilization of a larger field scale evaluation would enable determination of site specific materials handling and mixing equipment. This information would have a direct bearing on the final costs associated with this alternative and probably would be performed as part of the design study if this technology is selected. If conducted, the larger scale field studies would be done on site. Pilot compost piles utilizing the optimized conditions determined during the laboratory study phase would be set-up on the concrete slab at the existing decontamination area or in a prepared portion of the north emergency pond. Typical pile sizes would be in the range of 5 feet high by 10 feet long by 5 feet wide. Aeration would be supplied through a PVC header and duct system fed by a conventional aeration blower. Samples for laboratory .analysis will be collected and analyzed on a bi-weekly basis to determine the degradation occurring in the organic materials being treated. These analyses will include routine field determinations of pH, temperature, oxygen concentration, and moisture content. Other specific chemical analyses will be conducted as needed during the study. I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1, Page 22 Along with the evaluation of the composting process on the soil/sludge contamination, an evaluation will also be made pertaining to the composting potential for treating the contaminated stream sediments from the tributaries adjacent to the site. This study will be similar to that described for the source material. Liquid Biological Treatment A literature review and computer library search will be conducted in conjunction with the bioreclamation evaluation. These reviews will collect and evaluate previous work done on specific-site contaminants to take advantage of existing information and incorporate it into this study plan where practical. The reviews will be conducted during the initial phases of the characterization to incorporate their input into the subsequent study. Conventional liquid biological treatment methods, and PAC treatment technologies may be evaluated utilizing laboratory scale equipment capable of treating wastes at about a one liter per minute flow rate. It is felt that the data generated from such a system would be sufficient to determine the design criteria required for full-scale use of the technologies. Initially, and in conjunction with the characterization phase, of the investigation, seven composite samples will be collected from the soil/sludge contaminated areas and tested for biological treatability using either Imhoff cones or Eckenfelder I I I I I I I I I I I I I I I I I I I Proposed Characterization/Treatment Technology Study CFO/Shelby, North Carolina S&ME Job No. 4124-85-050D Document No. 85050D-0085 Revision 1, Page 23 reactors. The purpose of these investigations will be to preliminarily determine the viability of biological treatment as a remedial alternative. 3.4.3 Combined Physical/Chemical and Biological Treatment Based on the results obtained from the biological treatment evaluations, determinations will be made on the feasibility of combining physical, chemical, and biological treatment technologies. These evaluations will be made on the basis of existing available technologies and their expected results. No laboratory or field scale determinations will be conducted unless they are needed for scale up. I I I I I I I I I I I I I I I I I I I PROPOSED DATE -1988 2/15 DAYS 0 PUt.lP TEST I . ' I WELL INST ALL / PUMP TEST DATA EVAL/MODEL SET UP I ANALYTICAL SUPPORT l==l ' REPORT PREPARATION I I ,. SOURCE CHARACTERIZATION I I TEST DRILL/INITIAL SAMPLE I I QUALITATIVE SCREENING I SAMPLING FOR QUANTITATIVE ANAL YSISI QUANTITATIVE ANALYSIS I FIELD TEST OF REMOVAL METHODS I I . VENDOR LAB TESTS OF REMOVAL EQ. 1 DATA EVALUATION I I so~/ SLUDGE TREATMENT TECH I ' ' I THERMAL TECHNOLOGIES I SAMPLE COLLECTION I VENDOR TRIALS I COMPOSTING I I . SAMPLE COLLECTION I LAB SCALE TRIALS I QUALITATIVE ANALYSIS I QUANTATIVE ANALYSIS I I . LIQUID BIOLOGICAL I SAMPLE COLLECTION I TREAT ABILITY STUDY I QUALITATIVE ANALYSIS I ' ' QUANTATIVE ANALYSIS I I EVALUATION / REPORTING I I . I I CHARACTERIZATION I TREATMENT TECHNOLOGY STUDY SCHEDULE 3/1 4/1 4/14 5/1 5/24 6/1 7 /1 7 /23 8/1 9/1 10/1 10/11 I 20 40 I 60 I 80 100 120 I 140 160 I 180 200 220 I 240 I I I I I I I I I I I I . . . . . . . • • . . . ' . . . . . . . . . . . I I I I I I I I 11 ~I I 1111111111111111 N I I I I I PROPOSED I I W.,.;::JIIIIIIIIIIIIIIIIIIIIIIIIIIIII~ I I I I CHARACTERIZATION / TREATMENT I ~ I I I I I I TECHNOLOGY STUDY I . . . . . . S&ME DOCUMENT N0.85050D-0085 . ' I I I I I ~1111 11111111 I I I REVISION 1 I I I I I I I I PREPARED MARCH 15, 1988 I I I I I I I I LEGEND I I I I I I I I I 1111111111111111111 CONCENTRATED WORK EFFORT I I I I I I I I I I I I I ~ I i mn . . . . INTERMITT ANT WORK EFFORT . I 11111111111111 I I I I I I I I 111111'1 I 1111111 I I I I WORK COMPLETED I I I ~ 11111 1111111111 I I I I I I I I I I 1111 I I I I I I I I I I ' ' ' ' I . . . 111111111111111 IIIIIIIIIIIIII . I I I I . I I I I I . . . . I ~,,@7~~~~~11111111111111111111 ' ' ' ' I I I I I I I I I I I I I I I I I I I I I I I I I I I I I ' ' ' ' . ' . . . ' ' ' ' ' ' ' I I I I ' I I I I I I I . . . . I I I I I I I I I I I I I I I I I I I I ~1111111111111 I I I I I I I I I I I I i I 11111111111111~ 111111111111111 I I l~II I I II I I I I I . . . I I I I I I I I I I I I I I I I I I I I . . . ~IIIIIIIIIUI . . 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