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HomeMy WebLinkAboutNCD003200383_19900126_Koppers Co. Inc._FBRCERCLA RI_Remedial Investigation Work Plan 1989 - 1990-OCRBeazer Materials and Services, Inc. p D 'f'(os l'f A Member of THE B.R GROUP • Dear Barbara: Environmental Servi 436 Seventh Avenue, Pitt.sburgh, PA 15219 Phone: 412-227-2500 Fax: 412/fff'C/I:.iVEo D~ D JAN :11 1990 m vd cJ s UPERFllND SECTION January 26, 1990 Ms. Barbara Benoy NC/SC Site Management Unit U.S. EPA, Region IV 345 Courtland Street, NE Atlanta, GA 30365 Re: Morrisville This will confirm our telephone conversation of January 10, 1990 in which we concluded an agreement concerning EPA's conditions for accepting BM&S's Work Plan for the Morrisville site. During our conversation we discussed the difficulties BM&S foresees associated with the revised, shortened schedule for submitting the draft FS Report. We agreed that it is necessary to have a certain level of confidence in the finality of field sampling done to delineate the extent of the potential contaminants of concern before a draft FS can be completed for EPA review. We agreed that confidence in the finality of the sampling results could be assured if we hold regularly scheduled monthly or bimonthly meetings to review project status. We" further agreed that we will hold project status meetings at mutually convenient times on a regular basis either at the site or 1n Atlanta. With our agreement to hold regular project status meetings, BM&S is willing to accept the revised schedule and the other conditions outlined in your letter. EPA's conditional acceptance of the Work Plan should be rendered final by BM&S's acceptance of the EPA conditions on the terms set forth above. Unless we hear from you to the contrary, we will revise the Work Plan schedule consistent with your letter and forward it to you for attachment to the ACO. Please note concerning the schedule that we assume any change in the date for submitting the draft RI Report would effect a corresponding change in the date for submitting the draft FS. Writer's Direct Dial _____ _ .I I trust you January 17, questions. cc: P. DeRosa W. Giarla • January 26, 1990 • Ms. Barbara Benoy 2. received the Project call Operations me if you 1990. Please Very truly yours, ;iJ //_tc,w_ ,~ r<. {{ ~ Shannon K. Craig Plan have on any .I • • KEYSTONE ENVIRONMENTAi. RESOURCES. INC. Phone: 412/825-9600 3000 Tech Center Dr., Monroeville, PA 15146 Dear Barbara: November 14, 1989 Ms. Barbara Benoy NC/SC Site Management Unit Superfund Branch, Waste Management Division U.S. EPA Region IV 345 Courtland Street, NE Atlanta, GA 30365 On behalf of Beazer Materials and Services, Inc., I am pleased to submit to you for your review and approval, five (5) copies of "Work Plan to Perform Remedial Investigation and Feasibility Study, Morrisville, NC Site" dated November 1989. We are also sending two (2) copies to the State of North Carolina. Please note that a computer generated critical path schedule has been prepared in Section 6 of the Work Plan for the RI/FS, as we discussed with you November 1. We have included the PHEA (Risk Assessment) in the RI Report. We believe this schedule depicts a realistic time to complete the tasks described in the Work Plan. Any suggestions which you may have to shorten the project we would most certainly like to discuss and consider. We will submit to you under separate cover your comment letter indicating the pages of the Work Plan that address your comments. Thank you again for your attention and consideration. JCM:dac cc: Ms. Lee Crosby Ms. Shannon Craig Very truly yours, ~ (_' /f),,,t37t./-l;,L John C. Mitsak, P.E. Senior Project Manager • • UNITED ST ATES ENVIRONMENTAL PROTECTION AGENCY 3WD-SFB ncr !. s 1.98'! Shannon Craig Beazer Materials and Services 436 Seventh Avenue REGION IV 345 COURTLAND STREET. N.E. ATL.A.NTA. GEORGl,-'l. 30365 Pittsburgh, Pennsylvania 15219 Subject: Koppers Superfund Site Morrisville, North Carolina Dear Ms. Craig: ·RECEIVE[) ocr 1 B 19s9 SUPERFUND SECTION Enclosed please find the comments developed on the Revised Draft Work Plan for the Koppers Superfund Site located in Morrisville. Many of these comments are reiterations. A copy of the comments submitted by the NC-DHS is also included; the content of which should be considered as comments submitted by the EPA to you. All comments should be incorporated into the second revision. The second revision of the work plan should be submitted no later than November 15, 1989 as this is the second revision of the draft. Please do not hesitate to contact me if you have any suggestions or questions. I can be reached at 404/347-7791. Sinc;(\'rely, . c.:Ji-{tcz/j:c_ Barbara H. Benoy Remedial Project Enclosure cc: Bill Giarla, Beazer Materials John c. Mitasak, Keystone Pat DeRosa, NC-DHS .,.,,.,- Comment# 1 2 __ _ 3 __ _ 4 __ _ 5 __ _ 6 __ _ 7 __ _ • KOPPERS MORRISVILLE NPL SITE • DRAFT RI/FS WORK PLAN REVISION 1 EPA's Review Comments Reference General General General General Section 1.0 ES-1 Section 2.1 Comments The work plan must adhere to the ESD SOP. The decon procedural change requested for this site is written and included in the SOP. The historical data is still presented in a manner that is not presented as a package. It is presented in numerous documents. For example, Appendix A, Summary of Existing Data, was prepared in August of 1987, and does not include much of the available data now in existence. The cleaning and decontamination procedures for all drilling and sampling activities shall be in accordance with ESD's SOP. There are no references included. This is assumed that a mistake was made in the reproduction of the document. Please supply the reference page including all appropriate site-specific documents. The RI/FS objectives should still include characterization of sediments of the Koppers Pond, and the confirmation of the nature of groundwater contamination and the determination of the extent of the groundwater contamination. The site was proposed for NPL listing in June 1988. Existing monitoring well system is questionable. Please refer to comments 55, 61 and 69. The integrity of the existing monitoring well system is questionable because of these wells. • Comment j/ Reference 8. __ _ Page 2-3 9 __ _ Figure 2-7 10 __ _ Page 2-5 11_ Page 2-5 12 __ Section 2.1 13 __ Page 2-6 14 __ Page 2-7 15 __ Page 2-7 • Comments In paragraph 1, it would be helpful to distinguish between the seven air rotary drilled monitoring wella, the twelve piezorneter inatallationa, and the fifteen aoil borings aa they are labeled on Figure 2-3 and 2-4. It ia very difficult to translate thia figure to the main aite map. Please add aorne aort of key to eaae this translation. In paragraph 1, please reference the source document which describes the 2 water aamplea collected from the fire pond in 1976. Ia thia data available? In the laat paragraph, please indicate by number which wells you are referring to as the "seven existing wells" sampled in 1980. The existing monitoring well logs were presented, but the is confusion due to the use of inconsistent codes. The Figures and text identify M-1 and W-1 and subsequent codes. However, the well loga included in Appendix D identify MW-1, MW-2, and etc. Please correct by using consistent nomenclature. On July 24, 1980, £ offaite wells and 1 onsite well were each sampled by KER and the NC-OHS (See Appendix H). No contaminants were detected. In line 2, the detection limit should be in ug/kg, not mg/kg. Paragraph 2, the 1984 sampling waa conducted in July, not June. Groundwater and soil sampling were alao conducted in December of 1984 (aee Appendix C). There are no aoil sampling reaulta listed for June of 1984 in Appendix C. • Comment II Reference 16 __ Page 2-7 17 Page 2-9 18 __ Page 2-9 19 __ Section 3. 1. 1 20 __ Section 3.1 21 __ Page 3-2* 22 Figure 3-lA 23 __ Page 3-10 • Comments Approximately 1100 cubic yards of contaminated soil were removed from the lagoon area in July 1986, however, the total volume of contaminated material removed form the site in July 1986 was reported as 1250 cubic yards (see attached reference Ill). Clarify the parties involved in the Consent Orders. The word "owner" should be added to the first sentence of the second paragraph. Text should read "Figure 2-4 displays the boring locations in these two areas." Contour maps should be included to indicate the extent of contamination and size of the plume and direction of migration Section 3.1.2 indicates that if PCP is detected in a trip blank, all samples having up to 5 times the concentration of PCP in the trip blank will not be considered positive sample results. This procedure is not acceptable for drinking water samples. At a minimum, immediate resampling of drinking water wells would be required. Please include the most up-dated well survey. Pentachlorophenol (PCP) has been reclassified as a B2 carcinogen and is undergoing public comment presently. As a result, the Agency will be maintaining a conservative position and will be using the newly proposed levels, as per the Federal Register, Vol. 54, No. 97 May 22, 1989. All data developed for risk assessment and/or for public health reference should be presented and reported as a B2 carcinogen until a decision contrary to this is made. • Comment jl Reference 24 ____ _ Table 3-9 25 ___ _ Page 3-17 26 ___ _ Page 3-24 27 __ Page 3-26 28 __ Section 5.3.2 29 __ Page 5-6 30 __ Section 5.3.3 31 ___ _ Page 5-9 • Comments The Agency does not concur that isopropyl ether should be eliminated for further evaluation in soil or sediment, or that PCDDs/PCDFs be eliminated for further evaluation in surface water. The RI can be the only mechanism to generate substantiation for elimination. Potential inhalation of PCOCs volatilized from surface water/sediment during remediation should be considered an exposure pathway. If not, reasons should be presented. There is new Risk Assessment Guidance that is appropriate to use in place or in addition to of the 1986 Exposure Assessment Manual. An additional objective for surface water is to define the extent of surface water contamination. Addition soil sample locations should be added in the teepee area and should definitely be subjected to PCDD/PCDF analysis. Core sampling may not adequately characterize the sediments of the Koppers Pond. The major source of potential contamination in sediments would be found from the top of the sediment to the upper l foot to upper 2 feet. Request dredge-type samples be collected in addition to the corings. Five feet in depth of sediment to be composited will not be representative. Sieve tests should be conducted prior to selection of sand grain size or well screen slot size. The wells must be developed until the water is clear. Three volumes are specifically for purging a well prior to sampling. Proper development of a well upon installation is critical. • Comment /I Reference 32 __ Page 5-10 33 __ _ Page 5-13 34 ___ _ Page 5-15 35 ___ _ Figure 5-1 36 ___ _ Page 5-4 37 ___ _ Table 5A-1 • Comments Filtering in not permitted for groundwater samples collected for RI/FS characterization. Filtered samples are allowable only when paired with unfiltered samples. The unfiltered sample results are considered the primary measurement and representative sample for interpreting the analytical results. Why is there such a long period between the different rounds of sampling? Please present rationale and also consider decreasing the time period between the different rounds of sampling. At least three, rather than two, observation wells will be needed around each pumping well to determine the anisotropic ellipse, .and the orientation of the wells should be adjusted to the fracture patterns determined rather than to the strike and dip of the bedrock. Interconnections between the different groundwater levels· can also be evaluated when pumping from the deeper zones by including observation wells in the shallower zone(s). Text proposes TCL/TAL analysis at SW-13. This location is not shown on Fig. 5-1. Text reference is on page 5-4. There is an existing drainage system that runs parallel to Koppers Road, along the "wooded area". Surface water sampling and sediment sampling should be conducted on this location and should at least be conducted on the north side of Koppers Rd. In the volatiles list, 1,1-dichloroethane is listed twice. One should be 1,1-dichloroethene (also known as 1,1-dichloroethylene). Comment j/ 39 ___ _ Well Info. 40 ___ _ Section 5.1 41 ___ _ Section 5.3.1 42 ____ _ Figure 5-1 43 ____ _ Section 5.3.1 Comments • There is no comprehensive list of wells and the corresponding information. Figure 2-3 gives locations of monitoring wells offsite, codes are M-1 through at least M-12, and W-1 through at least W-15. However, the monitoring wells logs presented as Appendix D gives logs of MW-1 through MW-12. There should be no confusion to the reader as to which logs belong to which well. This must be deciphered and presented in a manner such that the data is easily interpreted. The POP must be consistent with and incorporate all of the requirements which are set forth in the EPA Region IV SOP, not just generally conform to. Please reference the Administrative Order and reword as appropriate. Surface water characterization is conducted to determine the nature and extent of contamination. Drainage has been identified along Koppers Road adjacent to the wooded area. Additional sampling is necessary. In addition, the work plan must indicate provisions for any additional sampling based on field determination and observations. The work plan is written to limit this potential to specific locations. Indicate the effluent stream that flows from the Koppers Pond on all appropriate figures. A sediment and surface water sample should be collected from the effluent north of the Koppers Road. Sampling locations on the Koppers Pond include areas closer to the lagoon and treatment areas. Comment# 44 ___ _ Figure 5-1 45 ____ _ Table 5-1 46. ____ _ Figure 5-2 47 ____ _ Page 5-6 48 ____ _ Section 5.3.2 49 ____ _ Page 5-6 50 ____ _ Page 5-6 Comments • SW-31 does not appear to be a good candidate for TCL-TAL analysis. Suggest SW-24. Temperature, pH, and conductivity readings should be performed on all water samples collected. Figures 5~2 and Figure 5-3 do not agree. Top of page, please conduct full scan metals on the samples collected within the teepee burner area instead of "primary drinking water metals". The land farming area needs surface soil sample locations in addition to the boreholes. If this is already within the scope, please clarify with specification. Decon procedures for downhole drilling equipment are still not written to adhere to SOP protocol. In addition, the rinse water is organic-free water and not analyte free water. The EPA SOP contains definitions of the appropriate cleaning materials. There is no. appropriate definition of "analyte-free water". "The number of borings installed will be at the discretion of the supervising hydrogeologist in charge of the project and will be based on physical indications of pentachlorophenol such as odors, staining, oil sheens or the presence of pentachlorophenol crystals." The statement is inappropriate and gives the authority to decide on only two borings if so desired by the supervising hydrogeologist. Please reword. The Agency must assume that the intent is to drill all proposed boreholes unless major problems with location are • Comment# Reference 51 ____ _ Page 5-7 53 ___ _ Table 5-3A 54 ____ _ Soil/Sediments 55 ___ _ Section 5.3.3 56 ____ _ Section 5.3.3 • Comments encountered. Please specify in text. In addition, at least some of the locations for TCL/TAL analysis should be identified in the work plan. The methodology for sediment sampling is not appropriate. If necessary, the Agency will agree on the Ponds sediment sampling locations for the work plan and reserve sediment sampling methodology review for the POP. Coring will not adequately characterize the pond sediments. Be aware that PVC piping is not be appropriate for sediments collection. The table does not identify which sediment samples will be analyzed for PCDD/PCDF isomers. Please correct. In addition, some sediment samples from the Koppers Pond should be analyzed for PCDD/PCDF isomers. Suggest some soil and sediment samples be analyzed for isopropyl ether. Many of the existing monitoring wells cannot be considered as legitimate monitoring wells because of damage to the wells, unknown construction or dry conditions. These need to be either deleted from the work plan or identified as damaged wells. The locations of some of the proposed monitoring, wells are now obsolete. Please update to incorporate all existing groundwater sampling data to date. • Comment# Reference 57 ____ _ Section 2,3, 5 58 ___ _ Section 5.3.3 59 ___ _ Section 5.3.3 60 ___ _ Section 5.3.3 61 ___ _ Section 5.3.3 • Comments The geological, hydrogeological information presented in the work plan is extremely general in nature. Very extensive work has been conducted by Koppers/Keystone/ Beazer regarding the groundwater at this site. The 1984 Koppers Company Inc. Hydrogeologic Investigation of the Raleigh, NC, Plant draws some very specific conclusions concerning the groundwater and the flow direction(s). Based on information obtained historically, the groundwater flow direction is not in the same general direction of surface water flow. Please address this lack of presentation of data. Sieve tests should be conducted prior to selection of screen slot size. Page 5-10, the locations proposed for the deep monitoring wells may be subject to change in response to the quarterly monitoring of private wells. It would appear that the locations need to be relocated now. Page 5-13, top of the page indicates that the well water may not become sediment-free from development. Be advised that the sieve test conducted before selection of screen slot size will increase the probability of sediment-free water. Page 5-13, The use of the existing on-site monitoring wells is a good use of the available resources. However, the integrity of some of the existing wells is extremely questionable. It must be ensured that the existing monitoring wells to be sampled (specifically as part of the RI/FS), must have all Comment ii 62 ___ _ Section 5.3.3 63 ___ _ Section 5.3.3 64 ____ _ Section 5.3.3 65 ____ _ Section 5.3.3 66 ____ _ Section 5.3.3 Comments • appropriate documentation of construction and thorough well logs and be in technically sound condition. Groundwater samples collected for volatile organic analysis should be collected with hailers. Pumps generate too much agitation. Groundwater samples collected in the field should not be filtered. Filtered samples are not considered representative of the groundwater. Page 5-13,-14 states that all laboratory procedures and test methods will be in accordance with the Quality Assurance Project Plan (QAPP). Since this document is not in existence (or at least not yet available to EPA), the text " ... must be consistent with and incorporate all of the requirements which are set forth in the EPA, Region IV Support Branch Standard Operating Procedures and Quality Assurance Manual (SOP Manual)." Please be advised that the SOP has been amended for soil/sediment sample collection for volatile analysis in that no soils/sediments are mixed prior to being placed in the respective containers. 40 CFR Part 264.94 is specifically referring to an active RCRA facility permit. This is not appropriate for determining the PCOCs at this site. The second paragraph on page 5-14 indicates that Phase II sampling will only be subjected to analysis of limited parameters. Either the list of parameters for Phase II should be specified clearly prior to work plan approval or the criteria for selection. The Agency must be advised of any "refining" of the list of PCOCs. Comment # 67 ____ _ Section 5.3.3 68, ____ _ Section 5.3.3 69 ____ _ Section 5.3.3 70 ___ _ Section 5.3.3 71 ___ _ Section 5.3.3 72, ___ _ Section 5.3.4 Comments • The criteria of this selection process must be agreed upon by the Agency, as it is an integral part of the RI/FS. Well C-9 should also be included in the wells to be sampled for isopropyl ether. Aquifer characterization indicates that certain information will be collected during the installation of wells and borings. Please be advised that section 4.7, page 8 and 9 describe the minimum that must be included in the drilling logs as well as any other data collection. Table 5-5 indicates that all TCL-TAL analysis will be conducted on samples from existing wells. This is completely inappropriate. TCL-TAL analysis should be performed on new wells because of construction, protocol, procedures and the integrity of the new wells. Some of the existing wells are of questionable integrity, as stated before. This is also true for wells subjected to PCDD/PCDF analysis. As stated previously, the pump tests should include three observation wells. Additional field parameters that should be taken at all wells prior to sampling are temperature, pH, and conductivity. Elevations and survey results must be included and tied into a "real-world" benchmark. Schedule information provided is proposed with much allowance of extra time. From development of POP to completion is 20 months. The time recommended to complete a RI/FS from consent order on, is 18 months. The proposed schedule is too lengthy for the tasks proposed to date. Comment jl 73 ____ _ Section 5.4 74 ____ _ Section 5.4 75 ___ _ Section 5.5 76 ___ _ Section 5-6 77 ____ _ Section 5.6.1 Comments • Appropriately, copies of the transferred data, (i.e. floppy discs, tape), must be submitted to EPA on validated data. There are reporting requirements for format and content which will be discussed no later that approval of the POP. The RI Report Format is very simplistic and needs to include more information. Please refer to October 1988 guidance for the required report format. A section "Contaminant Fate and Transport", as included in the guidance, has not been included and needs to be. Likewise, the baseline risk assessment should also include an environmental assessment. The Appendices should also be identified. Page 5-17, last paragraph, first sentence, it appears that the word 11 if" is ~iasing. The screening process of the Feasibility Study is a little more comprehensive than presented. The comparative analysis of alternatives includes nine criteria, each of which have specific factors. These criteria are as follows: 1) Overall protection of human health and the environment, 2) Compliance with ARARs, 3) Long-term effectiveness, 4) Reduction of toxicity, mobility, or volume, 5) Short-term effectiveness, 6) Implementability, 7) Cost, 8) State acceptance, 9) Community Acceptance. Though the State and community acceptance is not a technical factor that can be implemented into the screening process in the work plan, the other seven criteria must be. Table 5-7 attempts to identify some technologies. So that there is no misunderstanding, these 7 Comment jl 78 ____ _ Section 5.6.1 79 ____ _ Section 5.6.1 80 ____ _ Section 5.6.1 81 _____ _ Section 5.6.1 82 ____ _ Section 5.6.1 83 ___ _ Section 5.6.1 84 ___ _ Section 6 Comments • technologies should be presented with a brief description. Some detail is necessary. Vitrification should be included in the technologies. The information used to conduct the initial screening must be presented. All site specific information concerning remedial technologies must also be presented. What exactly is "other relevant work"? Table 5-9 must include information such as the soil characteristics that are sited as being prohibitive of certain technologies. "Not appropriate" for the removal of constituents of interest is not sufficient rationale or justification to eliminate a technology. There must be a technical presentation made. Same is true for "not applicable to anticipated concentrations of soil/sediment constituents". Considering the fact that the proposed schedule for this work is approximately two years, some of the eliminated technologies may be better developed and more "fine-tuned" by the time the work is completed. There is no supporting information provided in the work plan to indicate chemical treatment is not a proven option for PCP remediation. Must be presented. All supporting data must be presented for elimination of a slurry wall/grout curtain elimination. Present the technical rationale. The schedule can be shortened and should be. The following suggestions are made: * • * * * * * * Mobilization for. the conducting of Round 2 sampling could occur two weeks ahead of proposed schedule. Round 2 analysis and validation should not take more than 1 month. Mobilization for and the conducting of Round 3 sampling could occur a full month ahead of proposed schedule. Round 3 analysis and validation should not take more than 1 month The RI Draft Report should be submitted no later than 3 months after completion of RI field work. The FS Draft Report should be submitted no later than 4.5 months after completion of RI field work. The PHEA is part of the RI and therefore should be conducted simultaneously with the RI and submitted simultaneously. • • North Carolina Department of Human Resources Division of Health Services P.O. Box 2091 • Raleigh, North Carolina 27602-2091 James G. Martin, Governor David T. Flaherty, Secretary Ronald H. Levine, M.D., M.P.H. December 9, 1988 Ms. Barbara Benoy Re!re::lial Prcgram Manager SUperfurrl Branch North Site Management section EPA Region IV 345 Courtland Street, N.E. Atlanta, GA 30365 Dear Ms. Benoy' SUBJECT: Koppers COmpany, Inc., NCD980844518 Morrisville, NC State Health Director The NC SUperfund Branch has been informzd that on. December 14, 1988, EPA will begin fonnal negotiations with Koppers, COmpany, Inc. regarding the Administrative Order on Consent to corxluct a RI/FS at the subject site. As per our telephone conversation today, I would like to suggest that the following State concerns be included in the negotiations. As the RI/FS pr=ess continues, we ask that Koppers provide the SUperfund Branch with copies of: 1. All reports submitted to EPA. 2. All sarrq::,ling results from on and off-site sarrq::,les collected by Koppers. 3. All work plans submitted to EPA. 4. All correspondence to local residents regarding the site. · 5. All additional correspondence submitted to the public infonnation repository designated for the site. We · also ask that Koppers notify the Branch of any sarrq::,ling they plan to corxluct at or around the site so that we nay accurately respond to questions from local residents and the :rredia. Ms. Barbara Beno, December 9, 1988 page 2 As a separate issue regardin3' Koppers, I have been informed that roadside mnstruction for the extension of the Morrisville water line along Highway 54 has begun. 'Ihis line is scheduled to turn west on Koppers Road and mntinue west past Omrc:h Street. Please note that Koppers Road drains urx:l.er Kremrn Road to the Medlin Pond. Soil mntamination along Koppers Road should therefore be evaluated prior to installation of the water lines. We feel that this issue needs to be addressed soon to prevent delay to the water line installation. Lastly, I will be nailin3', urx:l.er separate aJVer, a list of camnunity mntacts with whom I have dealt regarding the Koppers site. If you have any questions, please feel free to contact me or Olarlotte Varlashkin at (919) 733-2801. PD/pb/31 == Lee Crosby S~y)Jd. I ,,,,,._.....t DeRosa, Env~Olemist SUperfurx:l. Branch Olarlotte Varlashkin Grover Nicholson • Phone: 412/825-9600 FEDERAL EXPRESS Dear Ms. Benoy: • KEYSTONE ENVIRONMENTAL RESOURCES, INC. 3000 Tech Center Dr., Monroeville, PA 15146 August 4, 1989 Fax: 412/825-9699 Ms. Barbara Benoy NC/SC Site Management Unit Superfund Branch Waste Management Division U.S. Environmental Protection Agency 345 Courtland Street, N.E; Atlanta, GA 30365 RE: Koppers Comgany Morrisville, NC Site RI/FS Work Plan (Final) On behalf of Beazer Materials and Services, Inc., attached please find five copies of "Work Plan to Perform a Remedial Investigation and Feasibility Study at Morrisville, NC Site (FINAL)," dated August 1989. The Work Plan has been revised based on Region IV's comments received on June 21, 1989. We have attempted to revise the Work Plan to include, in as much detail as possible, the numerous items discussed with you and Ms. Craig during the last few weeks. If, however, you feel that additional revisions can be made to clarify or substantiate the Work Plan, pkase call either me or Shannon so that we may discuss and consider your recommendations. Two copies are also being sent to the State of North Carolina per the Consent Order. Thank you for your attentiveness and understanding during this review. JCM:dac Enclosures (5) cc: Ms. Lee Crosby Very truly yours, ~ C. M!,tiJ'-YAf John C. Mitsak, P.E. Senior Project Manager c/o Ms. Charlotte Varlashkin North Carolina Department of Health Services Ms. Shannon Craig • • North Carolina Department of Human Resources Division of Health Services P.O. Box 2091 • Raleigh, North Carolina 27602-2091 James G. Martin, Governor David T. Flaherty, Secretary Ms. Evelyn l.llrnley Mo=isville Town Hall 222 N. Church Street ro Box 166 Mo=isville, NC 27560 Dear Ms. l.llrnley: Ronald H. Levine, M.D., M.P.H. State Health Director June 14, 1989 Enclosed please find one (1) copy of the Koppers Company, Inc. Site Inspection Report (Part 1 and II) completed by the CERCIA Unit, NC Division of Health Services, in May 1987. Ms. Barbara Benoy, US EPA Region IV, requested that a copy of this report be :mailed to you to be included as part of the information repository for the Koppers Company, Inc. site. If you have any questions, please contact Ms. Benoy at (404) 347-7791. PD/pb/Koppers.doc Enclosures (2) Sincerely, #✓tix 7)/4 ___ Pat DeRosa, Environmental Chemist Superfund Branch Solid Waste Management Section • .•·:1'w.Tt~ h .• ·t~~\ //.~r;)r~.?--·_,,~; 1< , l _, -·-> j" . I /--1~ ~~,.., .-'tu··! r-i':, \;-,, ·-·-i' ,. .;, .... ""',,,• -~ .. ",,,".:.:,:,.,,,. • State of North Carolina Department of Environment, Health, and Natural Resources Division of Solid Waste Management P.O. Box 27687 · Raleigh, North Carolina 27611-7687 J amcs G. Martin, Governor William W. Cobey, Jr., Secretary Ms. Barbara Benoy Remedial Project Manager tebruary 9, 1989 US Environmental Protection Agency Region IV 345 Courtland Street Atlanta, GA 30365 RE: Comments on the Koppers Co., Inc. NPL Site, Morrisville, NC FSP, QAPP, _Health and Safety Plan for RI/FS January 1990 Dear Ms. Benoy: The referenced project plans for the Koppers Co., Inc. Site in Morrisville, NC, have been reviewed and the following comments are offered: I. Health and Safety Plan No comments. II. Quality Assurance Project Plan (QAPP) Page i: How do the elements of this signature page correspond to the elements of a title page as specified in "Guidance for Conducting RI/FS Under CERCLA", October 1988, p. B-10? William L. Meyer Director Page ii-iii: Where is the list of recipients of official copies of QAPP as specified in above guidance document? Page 2-2 thru 2-10: Tables· 2-1 thru 2-4 differ from the corresponding tables in the Nov. 1989 Work Plan (Tables 5-1, 5-2, 5-3A, 5-3B, and 5-5) and in the FSP (1'ables 3-1, 3-2, 3-3A, 3-3B, 3-5). The differences appear in the columns for analytical methods, trip blank, comments and footnotes. Inconsistencies in these tables should be corrected. Ms. Benoy 2-9-90 Page 2 Page 2-11 thru 2-15: Page 3-1: Page 4-2: Page 4-3: Page 4-4: Page 5-1 thru 5-29: Page 5-1: Page 5-3: Page 5-7: Page 5-8: Page 5-9 thru 5-14 Page 5-10: • • Please site the reference documents for detection limits listed in this table. Please explain which of these individuals is with BMS, KER, EPA. Parameters have been added under Section 4.3 which do not appear in the corresponding Section 4.1.3 in the November 1985 Work Plan. Inconsistencies in these tables should be corrected. The dioxin/furan analysis method 8290 differs from what appears in the Work Plan. Is this an intentional change and if so, why? Why have 11 Representativeness11 and 11Comparability11 been deleted from Section 4.6? Section 5. 0, 11Sampling Equipment and Procedures11 , appears in both the QAPP and FSP. If it is to appear in both, references to figures and sections should be clarified to state which document they appear in. Currently, references are made to sections · in the QAPP and FSP without distinction. For example, Figure 3-1 and Tables 6-lA ad 6-1B are in the FSP. Please note in text or consolidate all relevant tables and figures into one section. Under Section 5.1.2 in sampling the east and west drainage ditches, locations upgradient of the site (SW-25, SW-29) should be sampled prior to downgradient locations along these ditches. The intent here is to sample the least contaminated areas first. Please site the source of this cleaning procedure. At what depth will the sediment samples be collected? Please site the source of this cleaning procedure? Will an HNu or OVA be used during boring to screen for volatiles? Please site the source of these cleaning procedures. Use new bottles for the VOA samples. Ms. Benoy 2-9-90 Page 3 Page 5-17: Page 5-19: Page 5-21 thru 5-22: Page 5-25: Page 6-4: Page 13-1: • • It appears that if purging is done with a bailer the well would be emptied from the bottom, however, .if purging is done using a pump the well would be purged from the top of the water column. llll purging should be done from the top of the water column ( See EPl\ Region IV SOPQAM, Section 4.7.5.3, l\prU 1986). In polnt l/6, it appears that all purged groundwater will be collected. This contradicts Page 5-13 of the Work Plan which indicates that some off-site wells will be developed and purged without containment of the water. Will bailers be used for sampling after purging with pumps? What is "sufficient recovery" before sampling wells after purging? Site the section of the Work Plan where filtration of samples for inorganics analysis is discussed. Please explain why filtered samples will be analyzed and non-filtered . samples will be maintained as the 11 samples of record 11 • Omit last sentei1ce on sampling for radionuclides since this is not applicable. Please site the sources of these holding times. Please site the source of these cleaning procedures. Why do these procedures vary from those indicated in Section 5.6.1? III. Field Sampling Plan (FSP) Page 1-8: Page 3-2: Page 3-7: On September 24, 1980, EPA also sampled 3 off-site wells (see Appendix H, Work Plan, November 1989). No contaminants were detected. In the 3rd paragraph, no sampling for PCDD/PCDF is scheduled for the Medlin Pond water. Is the information from previous sampling sufficient to characterize surface water in the Medlin Pond for remediation? If so, explain. Under "Intermediate Depth Monitoring Wells", is the first 50 feet of 6" steel welded joint casing stainless steel? If not, why? Mr. Benoy 2-9-90 Page 4 Page J-8 thru 3-9: Page 3-2a thru 3-lla: Page 3-10: Page 3-11: Page 3-12: Page 5-1 thru 5-27: Page 6-1: Page 6-la: Page 6-lb: • • Since wells C-9C, C-12C, and C-15C are all cluster wells,, shouldn't the deep po~tions of all 3 be grouted to 80 feet to prevent communicati.on with the adjacent intermediate wells installed to 10 feet? If not, why? Secti.on 3.0, Tables 3-1, 3-2, 3-3A, 3-38, 3-5. (See comments under QAPP, Page 2-2 thru 2-10). Please provide rationale for non-containment of water from wells C-17, C-18, C-19, C-15, C-20, C-21, C-22 as opposed to containment of water from other off-site wells. The purge water from all the wells should be contained and sampled prior to disposal to ensure that contaminated purge water is not being released into the environment. In the last paragraph, please explain what is meant by 11 concurrent11 • Under "Geochemical Analysis of Groundwater Sample", fifty wells will be included in the analyses listed. However, in the Work Plan p 5-16, this number in 44. Please correct. (See QAPP comments p. 5-1 thru 5-27.) In the first paragraph, reference is made to cleaning procedures elaborated in Section 5.6.1. This section addresses only bottles for groundwater samples. Please site source documents for preservatives, containers, and cleaning procedures listed in Table 6-lA. Please site source document for holding times listed in Table 6-lB. Ms. Benoy 2-9-90 Page 5 • • \'le appreciate this opportunity to offer comments and look forward to continued jnvol.vement with RI/FS activities. Please contact me at ( 919) 733-2801 il' you have any question concerning these comments. cc: Lee Crosby LC/PD/db/Koppers.doc Sincerely, Pat DeRosa, Environmental Chemist Superfund Section Solid Waste Management Division