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Home My WebLink About20012463.tiff CG- S \ ENVIRONMENTAL• CONSTRUCTION • COMPLIANCE Weld County Planning Dept JUL 14 2000 July 12,2000 Monica Daniels-Mika RECEIVED Weld County Department of Planning Services 1555 North 17th Avenue Greeley, Colorado 80631 RE: Application for Amendment to USR Permit 248 Varra Coal Ash Burial Project Weld County,Colorado CGRS No. 1-135-2755 Dear Ms. Daniels-Mika: Enclosed please find a copy of the Certificate of Designation permit response Varra Companies, Inc. has submitted to the Colorado Department of Public Health and Environment for review and approval. It is our understanding that Ben Patton, who was the reviewer assigned to this project, is no longer with your department and that this project will be assigned to another individual. If you have any questions regarding this information, please contact me at(970) 288-2657. Sincerely, CGRS,INC.jr) ^ ■ \ 1 fL b .Adams,P.G. n" Principal/Hydrogeologist \\ Attachments C:Uome\W IN WORD\Nana\usrcoverletter2.doc 2001-2463 P.O. BOX 1489 • FORT COLLINS, COLORADO 80522 • PHONE: 970-493-7780 • FAX: 970-493-7986 ATTACHMENT A \WTSERVERUoby\W INWORD\Vaaa\CBRCstatus2.doc eENVIRONMENTAL• CONSTRUCTION • COMPLIANCE June 26, 2000 Mr. Roger Doak Colorado Department of Public Health and Environment(CDPH&E) Hazardous Materials and Waste Management Division 4300 Cherry Creek Drive South Denver, CO 80246-1530 RE: Response to Comments Proposed Varra Coal Ash Proposal—Work Plan and Analytical Data Weld County, Colorado CGRS No. 1-135-2755 Dear Mr. Doak: This letter address issues presented in your correspondence and attachments dated May 3N, 1999, regarding our submittal for performing a pilot test for gravel quarry reclamation utilizing coal ash in saturated conditions. I have attached your letter for reference. My comments to your issues are provided below. Your comment that"analytical data submitted unequivocally shows degradation to groundwater" is over simplistic and does not account for the different testing performed. The comparison of SELP data to drinking water standards was for comparison purposes to show elemental makeup of extracts from a highly agitated test with a three to one dilution ratio(for comparison the TCLP test requires a 20 to one dilution). In addition, none of the leachates were filtered with a 0.45 micron filter and some of the samples were not filtered at all. The SELF test showed that materials considered inert have elemental compositions similar to that of coal ash. As agreed upon with the State, we have conducted additional leaching tests as presented in our Quality Assurance Project Plan (QAPP) dated March 13, 2000 and in our January 26, 2000 letter to you. The results of the leaching tests are presented in Table 1. The leaching test was designed to reflect to the extent possible the conditions that will be encountered by placing ash at the Varra property. As stated in the QAPP the leaching test was a modification of ASTM D 4874-95 Standard Test Method for Leaching Solid Material in Column Apparatus. The column was filled with fly ash and sand and gravel obtained from the Varra property in the vicinity of the proposed trench. Prior to filling the column with fly ash (a combination of Class F silo ash with gypsum and Cherokee 4 fly ash with sodium) and sand and gravel, a divider was placed in the column to allow a vertical separation of the materials. This divider was removed as the column was filled. Approximately 70 percent of the column was filled with fly ash and the P.O. BOX 1489 • FORT COLLINS, COLORADO 80522 • PHONE: 970-493-7780 • FAX: 970-493-7986 Mr.Roger Doak Coal Ash Pilot Project Proposal June 16,-2000 Page 2 remainder of the column was filled with the sand and gravel. The column length was increased to 30 inches to accommodate the pore volume needed for sampling and to provide a larger volume of ash. The column was agitated as it was filled to induce settling. Once the column was filled water was allowed to preferentially fill the gravel portion of the column and wet the ash. Water was periodically introduced into the column as the water level in the gravel lowered. This procedure was repeated until the entire column was saturated. Prior to initiating the leaching test the upper two inches of the column was filled with gravel to occupy the space created by settling and to prevent the diffusion plate from being blocked by the less permeable ash. Photographs of the leaching experiment are presented in Attachment A. The proposed trench will be 10 feet in width. The seepage velocity beneath the ash deposit should be on the order of 2 to 3 feet per day. Using an average rate of 2.5 feet per day four days would be required for water to cross the ash. The flow rate through the'column was adjusted for one pore volume (calculated at approximately 1.5 liters) in four days so that the total contact time of the water with the ash in the column would be reflective of field conditions. All of the analytical parameters were inorganic in nature and fluorescein, an organic dye, was added to verify that water flowing through the column was not bypassing the ash or soil along the column wall. No preferential flow was observed along the column wall throughout the experiment. As mentioned the leaching medium was water obtained from the Varra property. Water obtained from the Varra property on February 28 and April 5, 2000 was used in the experiment. After leachate samples were collected they were measured for pH, temperature and conductivity. The samples were then forced through a 0.45 tun cellulose acetate filter and transported to the laboratory for analysis. The samples were analyzed for Al, Sb, As, Ba, Be, B, Ca, Cd, Cr, Co, Cu, Fe, Pb, Li, Mg, Mn, Mo,Ni, P, K, Se, Ag, Na, Ti, T1, V, Zit, Fig, U, alkalinity as bicarbonate, carbonate and hydroxide and chloride, fluoride sulfate nitrate and nitrite. Laboratory data sheets are presented as an independent document with this correspondence. The ash was analyzed for the same parameters as the water samples and the data are presented on Table 1. It should be noted that the ash digest results may not reflect compositional data generated by Public Service Company and presented previously as the digestion processes were different. The analyses are very comparable to the ash samples analyzed in the CSU leaching experiments. The ash used for the modified column test was a 50/50 mixture of Class F silo ash with gypsum and Cherokee 4 fly ash with sodium. These ashes were used as they constitute the bulk of ash generated at the Cherokee power plant and would be the primary ashes used in the Varra project. Bottom ash will not be used as previously intended due to its economic value. A review of Table I shows that of the twenty seven parameters with associated standards, the soil-ash leachate exceeded the standard(s) for antimony, beryllium, manganese, selenium, and nitrite on one occasion for each parameter and for sulfate for all samples submitted. Antimony and beryllium were detected near the method detection limit in samples obtained from pore volume two and eight, respectively. Nitrite and selenium were detected at 5.4 and 0.03 mg/L in samples obtained from pore volume one. The detection of nitrite is somewhat unusual as nitrite is very unstable in the environment and is readily oxidized to nitrate. None of the leachate samples had sulfate levels in excess of background levels detected in the pond water, which exceeded the sulfate standard for all samples submitted. Mr.Roger Doak Coal Ash Pilot Project Proposal June 26,-2000 Page 3 For comparison purposes there were 5 of 108 leachate analyses that exceeded standards which could not be attributed to background levels. Samples from four pond samples exceeded standards in 8 of 108 analyses. The pond water exceeded the sulfate standard for all samples submitted and for iron, lead, manganese and nitrate in one sample for each parameter. Boron was detected in column samples at concentrations ranging between 1.3 and 4.1 mg/L. Varra Companies owns the property on which the proposed pilot project will occur and does not utilize groundwater for crop watering. As such the standard of 5.0 mg/1 for boron should apply. Boron concentrations in water samples obtained from the Varra property varied between 0.2 land 0.66 mg/L. Molybdenum was detected in column leaching samples at concentrations varying between 0.11 and 0.47 mg/L. The highest concentration was detected in samples obtained from the first pore volume. Molybdenosis in cattle has been observed where molybdenum concentrations in groundwater exceeded 5 mg/L. It is reported that typical human diets contain molybdenum at 100-1,000 µg per day. It is recommended that consumption of molybdenum should not exceed 0.50 mg per day (NAS 1977). The average concentration of molybdenum observed in the column experiment are an order of magnitude below the levels required to cause adverse health affects in farm animals or humans. The column leaching samples represent the point where water intersects the ash in the trench. A three dimensional,steady state analytical model was used to estimate the concentration of boron and selenium at various locations downgradient of the proposed trench. The average concentration of the four pore volume analyses was used as the source concentration. In the case of selenium the method detection limit value was used in the average when concentrations were below the reporting limit. Concentrations were estimated at distances of 50 and 200 feet as the state will require that sentinel wells (also known as action wells)be installed 50 feet downgradient of the trench and the closest property boundary to the proposed trench is roughly 200 feet. The calculated values for boron and selenium at the respective distances are 0.620 and 0.221 and .004 and .001 mg/L, respectively. The model values should be conservative, as they do not account for retardation or water-rock interactions that may occur. Model data indicate that adverse impact to off-site properties will not occur. Model results are presented in Attachment B. Comments regarding your response to the CD submittal are presented below. 1. We do not believe water rights are an issue for this or any proposed project. A large scale reclamation would dramatically reduce consumptive groundwater losses. Concerns regarding the affects of the proposed pilot trench on groundwater flow at the study area were evaluated by use of a two-dimensional analytical groundwater flow model (TWODAN) and by analytical solutions provided by Harr (1962). The model was used to simulate groundwater flow conditions with the proposed trench in place. TWODAN is a 32-bit Windows program for the modeling of two-dimensional groundwater. The program is accepted by scientific community for evaluating two dimensional groundwater flow problems and was evaluated in Groundwater, v. 36, No. 3, May-June 1998. A uniform flow field was defined in the model with an unconfined aquifer. The hydraulic conductivity of the aquifer was estimated at 100 to 150 feet per day (the model used 125 feet per day). The aquifer thickness is about 20 feet. A 100-foot long trench was placed in the uniform flow field and a plot was generated showing the water table contours and flow path Mr.Roger Doak Coal Ash Pilot Project Proposal June 16,2000 Page 4 lines. Although the pilot test would contain material (coal ash and bottom ash) at lower hydraulic conductivity than the surrounding material, the simulation was ran with an impermeable barrier or trench to represent a worst case scenario for modifying the groundwater flow. As shown on Figure 1 in Attachment C, the trench has little effect on the groundwater flow direction or gradient. Solutions provided by Han(presented in Attachment C) indicate the change in gradient change across a ten-foot ash trench would be on the order of 0.003 feet. The volume of water passing through a 100 foot trench filled with ash, ten feet deep and fully saturated would be approximately 1 gallon per day. The amount of water that would pass underneath the 100 foot trench, assuming a ten foot column of native soil, would be in excess of 5,900 gallons per day. The calculations show that water will easily divert beneath and around the ash and will not affect cross or downgradient water availability. The volume of water that will pass through the ash is insignificant to the water that will bypass the ash and as such water quality should not be greatly affected. 2. Varra Companies is in the process of submitting an Industrial Storm Water permit for the referenced project. 3. Background water quality sampling has been performed on four occasions and the analytical results are summarized in Table 1. Laboratory data sheets are presented in Attachment D and in the analytical data submittal. A review of analytical data show results for analytical suites as recommended by Mr. Ken Neiswonger of CDPH&E. 4. Management of coal ash will initially entail adding water to the ash so that its volumetric water content is near 0.20. This will help to reduce fugitive ash emissions due to wind and placement. The ash will be brought to the site by 20 yard, covered, end dump trailers. The volume of ash proposed for the pilot project is 400 tons. The ash will be stockpiled on ground near the proposed trench and covered with plastic. It is anticipated that the ash will be placed in the trench the day of delivery. The placement of ash in the trench will not occur during high wind events. If needed the ash will be wetted prior to its placement in the trench. The ash will be handled by means of a front- end loader and placed in the trench concurrent with the digging of the trench. If it is determined that the placement has created an adverse environmental liability the coal ash will be excavated by means of a track hoe. The ash will be place in the immediate vicinity of the trench on plastic and allowed to dry. The ash will then be taken to an approved landfill for disposal as soon as the ash meets an acceptable moisture level. 5. Various data have been provided regarding the local geology. The surficial geology of the area as documented by Colton, 1978, varies between wind blown deposits of clay, silt and sand and sandy to gravelly alluvium, which are Holocene in age. Colluvium consisting of bouldery to pebbly sandy silt and clay may contain and interfinger with alluvium of various ages. The Pierre Shale underlies the unconsolidated alluvial deposits in this area. The depth to bedrock in this area as documented by field observation varies between 15 and 30 feet below ground surface. Mr.Roger Doak Coal Ash Pilot Project Proposal June 26,2000 Page 5 A United States Geological Survey investigation documented groundwater occurrence and movement near the study area. Underflow calculations in the vicinity of the study area indicate that 600 acre feet of water passes across a two mile section of the alluvial valley. If the average depth to bedrock varies between 20 and 30 feet below ground surface then the average hydraulic conductivity is calculated to vary between 97 and 147 feet per day. Assuming a hydraulic gradient of 0.0023 feet per foot and a porosity of 0.27 the seepage velocity (actual groundwater flow velocity) is estimated to vary between 0.83 and 1.25 feet per day. A map depicting the pieziometric surface of the local aquifer is presented in Attachment E. Depending on the local the groundwater flow direction the downstream distance to the Varra property boundary could vary between 400 and 800 feet. Compliance wells will be installed up, down and cross gradient to the proposed trench. Two downgradient compliance wells will be installed no more than 200 feet downstream of the trench. At least two action wells or sentinel wells will be installed within 50 feet on the downgradient side of the trench. Varra Companies can fulfill the financial assurance with either an addition their existing Surety Bond with DMG or can provide the state with a separate bond. In any event, as required the financial assurance will be established prior to accepting the ash as will the record keeping and reporting requirements once the project is deemed technically feasible. 6. The monitoring well network depicted on Figure 3 in Attachment E has been modified to shows eight monitoring points around the trench. Though the locations are conceptual, wells will be located up, cross and down gradient of the trench. If this project is deemed technically feasible at least four monitoring wells will be installed three months prior to the pilot project to determine ground water flow direction. Water levels will be obtained on a weekly basis prior to the project and no less than a monthly basis thereafter. Varra Companies will install as many wells as required to adequately monitor the site and to account for variations in groundwater flow direction. In addition, vertical variations in water quality and hydrology will be measured by constructing wells which are screened below the ash deposit as depicted in Attachment F. Of the eleven locations one point will be a nested well set which will consist of two wells completed at different depths to monitor vertical changes in water quality. 7. Varra Companies wishes to amend its contingency plan. As mentioned previously, if removal of the ash is required it will be characterized and transported to an acceptable landfill for disposal. 8. We agree that groundwater quality actions levels and compliance points need to be established. Background levels for various constituents should be accounted for when considering action levels. In general, we recommend the established standards for groundwater (Regulation /44 I, (5CCR 1002-41) be used as action levels. For constituents with multiple action levels we propose that primary standards be used. If a standard is exceeded confirmation sampling will be performed within one week of receiving analytical results. If the MCL is exceeded in the confirmation sample corrective action will commence. If a standard is exceeded and the analytical results are within acceptable error limits, we propose no action be mandated. Mr.Roger Doak Coal Ash Pilot Project Proposal June 26,2000 Page 6 We do not believe that "Surface Water Quality Protection" levels are warranted, even though many of these levels are higher than groundwater projection levels. Our rational for this is that the travel time for a particle of water to migrate from the proposed pilot trench to the Saint Vrain Creek is on the order of seven years if groundwater follows a straight line from the trench to the creek. If abatement activities are warranted they can be implemented long before any possible impact to off-site properties or surface waters could occur. We have proposed a very stringent monitoring schedule which provides a high degree of confidence that any degradation of groundwater quality will be detected by the proposed monitoring and "Action Level"wells. 9. We concur that a longer time frame would have more scientific validity. We agree to a one- year monitoring period. Monitoring will be performed in accordance with the QAPP and work plan presented previously. 10. We believe St. Vrain Creek is the correct terminology for the referenced drainage. 11. We agree with the permitting requirements with the following exceptions. DMG requires a technical revision to the existing MLR permit. An amended air quality permit is not required unless annual fugitive air emissions exceed one ton per year. After reviewing AP-42 and estimating particulate emissions by means of a Mechanical Erosion program provide by EPA, it is our opinion an amended air quality permit is not required for this limited project. 12. The deposition of 400 tons of coal ash will not make significant modifications to the local groundwater hydrology. As can be seen by the model results discussed previously only minor deviations to local flow directions are observed as well as minor variations in hydraulic gradient. Both impermeable and permeable barriers were modeled and model results for both scenarios yielded very little variation in groundwater flow. 13. Contrary to our initial submittal, bottom ash will not be used in the pilot test. The proposed placement of monitoring wells in the trench is depicted in Attachment F. A typical well construction detail is also provided. The variations in water quality and groundwater hydraulics in fly ash will be monitored my completing one well throughout the buried fly ash. Another well will be completed in the native soil divider. Two wells will be completed in the fly ash portion of the trench, with one well being screened within the fly ash and the other being screened below the ash in native soil. This well configuration should provide water quality data and hydraulic characteristics for the different materials. 14. The hydraulic conductivity, not seepage velocity, is estimated to vary between 97 and 147 feet per day. The resulting seepage velocity based on published hydrogeologic data is estimated to vary between 0.83 and 1.25 feet per day. The sampling frequency (weekly for the first month, biweekly for the second month, monthly for the third month and then quarterly until project termination) is sufficient to monitor variations in water quality. Mr.Roger Doak Coal Ash Pilot Project Proposal June26,2000 Page 7 15. We concur that a control trench would provide valuable comparison data. However, compliance associated with the coal ash trench will be based on water quality testing and comparing those test results to applicable standards. Varra Companies was awarded a research grant for the column study and permit phase and will apply for a grant to conduct the pilot test. If the grant is awarded the comparison testing will likely be performed; however, this testing cannot be guaranteed at this time. 16. The radioactivity in coal ash has been documented by the EPA and the USGS. A Fact Sheet regarding this subject is included in Attachment G. Analytical data for fly and bottom ashes from PSCO's Cherokee plant (ashes used in the leaching tests were obtained from the USGS) are included in Attachment G as well. The radioactivity is consistent with typical radio suits documented by EPA and the USGS. In EPA's March 1999 report to Congress states that "Exposure from direct contact, inhalation and ingestion were estimated to fall below natural background radiation exposure levels even for a worker standing on the ash pile". EPA eliminated radionuclides from further study based on ongoing and previous studies. Uranium was analyzed as part of the modified column leaching study. As the data show, dissolved uranium concentrations were lower in the leachates than in the water used as the leaching medium. This shows that the ash is not contributing uranium at levels higher than background. In reply to Mr. Niswonger's letter of May 3, 1999 we offer the following comments and address his issues by item. 1. Compositional data presented in our work plan were for ashes obtained from the PSCO Cherokee plant. Analytical data for the Cherokee plant ashes were provided; however, do not correspond with the ashes used in the leaching tests and were submitted to provide an overview of coal chemistry. Analytical data for the ashes used in the CSU and CGRS leaching experiments are provide in Attachment D and analytical data submittal. 2. The ash proposed for use in the Varra Test Project in Weld County will come from the Cherokee Generating Station in Denver, Colorado. The plant has four pulverized coal-fired boilers all of which burn coal from Moffat, Routt or Delta counties. These mines include West Elk, TwentyMile, Powderhorn, and ColoWyo. This coal is supplied under long term contracts that extend to the year 2007 or later. Under the terms of the contracts, the coal is required to meet certain specifications including Btu rating, ash content, mineral analyses, sulfur content, moisture, etc. Therefore, the chemical and physical properties of the coal(and resulting ash) do not change significantly from year to year. Comparisons of analytical data completed in the early 1990s with recent data indicate little variation in any of the ash constituents. These mines have supplied coal to PSCo for many years and the coal itself changes little over the course of time. Similarly, the ash resulting from the combustion of the coal exhibits little change as well. Analyses performed in 1990 and in 1999 are very similar with few variations. The coal is delivered in unit trains and stockpiled at the plant for burning. Coal is crushed prior to storage in silos above each coal mill. Multiple coal mills serve a single boiler and the mills further reduce the coal to particles of powder-like consistency. The coal is ignited in the boiler and heat generated. Heavier particles of unburned coal or inert matter fall to the bottom Mr.Roger Doak Coal Ash Pilot Project Proposal June]b,2000 Page 8 of the boiler where it is removed using a water discharge system. This "bottom" ash is conveyed to holding ponds for excavation and removal from the plant site. Lighter particles of ash are carried in the flue gas stream into collection devices known as baghouses, which contain fabric filters for removing the ash from the gas stream. The clean gases are then discharged through stacks and the ash removed from the filters and conveyed to silos for unloading and removal from the plant site. Typically, ash makes up 10% of the coal. The Cherokee plant typically burns two million tons of coal a year, generating 200,000 tons of ash. Of this amount, approximately 80% (or 160,000 tons) is in the form of fly ash and 20% (40,000 tons)is bottom ash. Silo ash is unloaded into trucks through a pug mill, which adds 20% water to mitigate dusting. Some ash is dry unloaded into bulk trucks for resale. Ash trucks leaving the plant site are covered and the ash delivered to job sites (construction projects) or to disposal locations. Bottom ash, which will not be used in the Varra project, is excavated using hydraulic shovels and loaded for off-site transport. 3. We concur that based on available data it is difficult to ascertain why element concentrations in the leachates from the SGLP were much lower. It is our opinion the difference in analytical results is a combination of the interaction of natural water with the ash and extraction and analytical techniques. There can be no basis for comparison as the leachates from the CSU experiment were not filtered. As you are aware all the leachates from the modified column test were filtered to 0.45 microns and are comparable to one another. 4. The extraction fluid for the TCLP test conducted by Analytica was #1. The pHs of the final extracts are presented in Attachment H. 5. The only consensus methodology employed during this study was the TCLP. The SGLP was identical to the TCLP with the exception that natural waters were used as the leaching medium. Methods and procedures as generated by CSU for this project are presented in Attachment I. However, since the samples from the CSU experiment were not filtered the value of these data and corresponding methodology is uncertain. The methodology used in the modified column leaching test is presented in the QAPP generated for the leaching tests. Natural water was used in the test with the exception that fluorescein was added as a visual aid. Photographs of the modified column leaching tests are presented as an Attachment A to this submittal. 6. We agree that in some cases further testing for various elements may have been warranted. However, budget restraints required us to selectively eliminate elements, which appeared to be non-issues. The reduction in elements was based on our testing data and available data from other investigations — none of which indicated mercury or titanium to be a concern in coal ashes. However, the analytical suite in the modified column test incorporated more elements, including mercury and titanium, all of which were tested on every occasion. Mr.Roger Doak Coal Ash Pilot Project Proposal June 26,.2000 Page 9 7. This table was generated not to indicate anticipated leaching potentials of various materials but to provide a comparison of elemental compositions of coarse or unfiltered leachates of various materials against recognized numerical standards. An indirect purpose of this project is to compare coal ashes to material considered inert, and in our opinion Table 6 strongly indicates that coal ash should be given consideration as an inert material when compared to recycled materials. 8. As was demonstrated by the modified leaching tests, coal ash can be deposited in saturated conditions with minimal effects. EPA has never contemplated wet management techniques that are being proposed and probably has never considered that isolating coal ash from the weathering cycle may be counter productive. Studies in the Netherlands indicate that the weathering process inhibits heavy metal leaching in coal fly ashes and a paper supporting this conclusion is presented as Attachment J. The vast difference in permeabilities of the native soil and the ash is what we believe what will allow the safe use of ash as fill material in a saturated environment. Groundwater will saturate the ash with a minimal volume of water passing through the ash deposit. The interaction of natural water and the ash will induce weathering and secondary mineral formations, which will hinder leaching processes. As shown with model results, boron and selenium levels, without considering retardation, should be below background or any regulatory levels within 50 feet of the trench. As such the potential for adverse impact for this project is considered minimal. 9. A QAPP was submitted for the leaching experiment and an amended QAPP for the pilot project is submitted with this correspondence. 10. We agree with Mr.Niswonger's comment. The results of the modified column leaching test demonstrate that coal fly ash can be placed in a saturated environment without creating significant environmental risk. The pilot project poses no threat to adjacent water users as a result of hydraulic modifications and water quality issues should not be an issue any significant distance downgradient of the trench. Varra companies will be required to provide financial assurance and if required abatement activities will be implemented. The proposed monitoring program is rigorous and will provide early warning to any possible adverse impacts. Analytical data show that the average concentration of elements in column leachate samples are below regulatory standards. This combined with analytical advection and dispersion solutions support a conclusion that adverse impact to waters of the state is unlikely. The data this project will provide are invaluable to the regulatory and scientific community, and will provide insight to issues not addressed by EPA or other scientific studies. It is our opinion that the data presented to date support a finding that the proposed pilot project is technically feasible. Mr.Roger Doak Coal Ash Pilot Project Proposal lune?b,2000 Page 10 If you have any questions regarding this submittal or require further information, please contact me at(800)288-2657. Sincerely, C aa C. � .G, Job L. Adams, P.G. ri ipal/Hydrogeologist Attachments cc: Mr. Chris Varra—Varra Companies Mr. Trevor Jiricek—Weld County Health Department Ms. Christina Kaminikar- Colorado Division of Minerals and Geology REFERENCES . Colton,E. B., 1978, Geologic map of the Boulder—Fort Collins—Greeley area,Colorado: U.S. Geological Survey Miscellaneous Investigations Map I-855-G,scale 1:100,000. Han,M.E., 1962."Groundwater and Seepage",McGraw Hill,New York,pp 119-121. Hem,J.D., 1992.Study and Interpretation of the Chemical Characteristics of Natural Water. U.S.Geological Survey Water-Supply Paper: 2254 NAS. 1977.National Academy of Sciences. Drinking Water and Health.Washington, DC: National Academy Press.pp 279-285. Schneider,P.A., 1983,Shallow groundwater in the Boulder—Fort Collins Greeley area, Colorado, 1975-77: U.S. Geological Survey Water Resources Investigation Report 83- 4058. EPA 1999. Report to Congress: Wastes from the Combustion of Fossil Fuels, Volume 2 — Methods, Findings, and Recommendations. EPA/530-R-99-010. Office of Solid Waste and Emergency Response.March. U.S. Geological Survey (USGS). 1997. Radioactive Elements in Coal and Fly Ash: Abundance, Forms, and Environmental Significance. U.S. Geological Survey Fact Sheet FS-163-97. October. 9 try; i STATE OF COLORADO Bill Owens,Governor of eon Jane E.Norton, Executive Director a4 4, Dedicated to protecting and improving the health and environment of the people of Colorado 'F^e' - . . HAZARDOUS MATERIALS AND WASTE MANAGEMENT DIVISION hap://www.edphestate.co.us/hm/ 'to 7c • 4300 Cherry Creek Dr.5. 222 5.6th Street,Room 232 Denver,Colorado 802 46-1 53 0 Grand Junction,Colorado 81501-2768 Colorado Department ad Ha Phone(303)692-3300 Phone(970)248-7164 oalth and Environment Fax(303)759-5355 Fax(970)248-7198 May 3, 1999 Christopher Varra Varra Companies 12910 Weld County Road 13 Longmont, CO 80504 Re: Proposed Varra Coal Ash Pilot Project-Work Plan and Analytical Data, April 1, 1999. Dear Mr. Varra: On April 6, 1999,the Solid Waste Unit of the Hazardous Materials and Waste Management Division(the Division)received Varra Companies application for a Certificate of Designation to perform a pilot project where coal combustion ash would be disposed in saturated conditions. The pilot project is part of Van-a's proposed reclamation plan for areas previously mined for gravel in Weld County. In accordance with the Solid Waste Statute (CRS 30-20-103), and with the Solid Waste Regulations (the Regulations) promulgated thereunder, 6 CCR 1007-2, a preliminary completeness review of such application is required within thirty (30) days of receipt. The Division has completed its 30-day review of the application. In the judgement of the Division, the application is incomplete and will require further modification/revision to adequately meet the requirements of the Regulations. Furthermore,based on the information and data provided, the Division cannot make a favorable determination on the submitted application. The unfavorable determination is discussed below: Table 6 of the Work Plan provides a summary of the SELP coal ash analytical results which exceed water quality standards established pursuant to Colorado's"The Basic Standards For Ground Water", Regulation#41, (5 CCR 1002-41). In addition, results of other analytical methods (TCLP, SGCLP, SGLP) show numerous constituents leaching from coal ash which exceed a relevant groundwater standard. The analytical data unequivocally shows degradation of the groundwater will occur if coal ash is placed in a saturated medium- Placing a waste, which has been demonstrated to leach pollutants, below the water table in an aquifer that is used or has the potential to be used for domestic use is prohibited. A request may be made with the state's Water Quality Control Commission for a variance for site specific groundwater standards. Unless a variance is granted or additional data is provided which demonstrates exceedance of_ground water standards will not occur, the Division will maintain its unfavorable recommendation for the proposed coal ash pilot project. Christopher Varra May 3, 1999 Page 2 Attached are two memos which provide further discussions regarding deficiencies identified during staffs review of the Work Plan and Analytical Data. Items and issues in the attachments must be adequately addressed before the Division would consider the application complete. Upon our determination that the application is complete,Division staff would commence with its 150-day comprehensive technical review of the application. We want to emphasize that our interest and desire are to work cooperatively with Varra Companies and other interested parties. We are sensitive to the financial costs should Varra continue to pursue the application without an approved variance for groundwater standards. A meeting between members of Weld County Health Department,Varra Companies, Colorado Groundwater Resources Services, the Water Quality Control Division, and the Solid Waste Unit may be arranged at your option - the intent being to discuss any/all items or issues that have been raised herein. In closing,please be aware that the Solid Waste Unit is authorized by statute to charge a fee for staff time spent in technical review of permit applications, remediation plans, etc. The applicant will be charged $72.47 per hour($10,000 maximum) for time spent on the review. It is the intent of the Division to provide comments that assist the applicant in generating the most complete and concise document possible. Should you have any questions or concerns regarding this matter,please contact Roger Doak at 303-692-343T Si rely, Roger Doak lenn F. Mallory Environmental Protection Specialist nit Leader Solid Waste Unit Solid Waste Unit Compliance Program Compliance Program enclosures cc: Weld County Board of Commissioners, w/o encl. Trevor Jiricek, Weld County Health Department, w/encl. Monica Daniels-Mika, Weld County Planning Department w/encl. Joby Adams, CGRS,w/encl. Harry Posey, Colorado Division of Minerals & Geology, w/encl Ken Niswonger, HMWMD, w/o encl. George Moravec, WQCD, w/o encl. sw/w1d/var2 COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT Hazardous Materials and Waste Management Division INTEROFFICE COMMUNICATION TO: Glenn Mallory FROM: Roger Doak DATE: May 3, 1999 SUBJECT: Varra Coal Ash Pilot Project My completeness review of Varra's proposal has raised numerous concerns and questions which need clarification and/or additional information. Below is a discussion of these issues. 1. There may be potential `water right' issues with this proposal. For example, if the coal ash acts as a dam and diverts groundwater away from a current user, and/or if groundwater direction t is altered to an adjacent property which, historical, has been dry and now is saturated. An evaluation of the potential changes to the hydrogeologic characteristics of the upper most aquifer is necessary to provide insight to some of these questions. 2. Staff of the Water Quality Control Division of CDPHE has concluded that a Storm Water , Management Plan(SWMP)'is required for the proposed pilot project. Should you have questions regarding the appropriate and necessary information required for a SWMP, contact Ms. Kathy • Dolan(303.692.3596)u 3. Local groundwater quality (Boulder, Ft. Collins and Greeley area) for unconsolidated alluvial deposits has been provided. Although this data is useful in terms of discerning the wide range of constituent concentrations, site specific data is essential to evaluating the groundwater beneath the facility. 4. A site map which illustrates the location of the coal ash storage area must be provided. A discussion regarding coal ash management at the storage area must be included. Engineering controls must be in place prior to acceptance of waste. Procedures must be established which address mitigation of potential nuisance conditions (e.g.,windblown ash). 5. Little to no information has been provided for numerous topics (e.g., local geologic data, hydrologic properties of the uppermost aquifer, POC wells, recordkeepin , closure plan and financial assurance). Although the applicant has made a commitment to provide this data after receiving a CD, it is difficult to make an appropriate evaluation without some of this information. Initially, information on the local geology and hydrology must be provided for CDPHE to • Varra Coal Ash Pilot Project May 3, 1999 Page 2 continue with its technical review. Prior to acceptance of waste CDPHE, DMG and Weld County must review and approve all relevant information(e.g., closure plan, financial assurance, recordkeeping, etc.) which will be provided after issuance of a CD. } 6. The inherent pozzalonic nature of fly ash will affect the ground water behavior beneath this site. In an effort to evaluate these changes, an adequate number of monitoring points must be Fc established. Additional wells and/or piezometers must be installed to measure changes in X0 I groundwater elevation, flow direction and quality. The.monitoring network provided in the 1 ' e proposal must-be enhanced to provide adequate coverage for changes in the groundwater system. 7. If adverse changes to water quality are observed, the proposed contingency plan requires ci 1eP° h' removal of ash from the trench and placement in a dry impoundment. Provide a site map f A° 4 r showing the location of the impoundment. Also, provide construction details for the j,r� impoundment. The impoundment must be constructed prior to acceptance of coal ash. 8. Groundwater quality action levels must be established for each constituent prior to acceptance of coal ash. The proposed action levels must be approved by CDPHE, DMG and WCHD. Once af‘ an action level is met or exceeded, abatement and remedial activities must commence. 9. The applicant anticipates the pilot project will take approximately three (3) months to complete. This time frame is primarily based on the assumption that water quality parameters will equilibrate within this time period. Any research project must have a strong scientific basis and be conducted as a controlled experiment with adequate monitoring over a period of time to show meaningful results. Therefore, we believe a minimum of one year(four quarters of groundwater data) is appropriate and necessary to evaluate seasonal changes, water quality issues, and chemical and physical reactions in groundwater. 10. St. Vrain River or St. Vrain Creek, which is correct? 11. Permits which will be required and/or amended for the pilot project include; a Certificate of Designation, Use by Special Review, Storm Water Management Plan, amended air quality. permit and amended DMG permit. 12. The disposal of coal ash into saturated conditions will result in a disturbance of the hydrologic properties of the alluvial materials at this site. In an effort to understand the physical changes occurring in the aquifer, the applicant must provide an evaluation of the hydrologic characteristics before, during and after placement of coal ash. Modeling the different hydrologic scenarios may provide insight which can than be used to understand the dynamics of the hydrologic characteristics upgradient, within and down gradient of the disposal trench. Varra Coal Ash Pilot Project May 3, 1999 Page 3 13. The proposal states that the disposal trench will have one-half filled with only fly ash and the other half with bottom ash and fly ash. The bottom ash will be placed in the lower one-half of the saturated portion of the trench and fly ash placed within one foot below ground surface. Describe how the monitoring points will be constructed to evaluate the bottom ash/fly ash half of the trench. 14. The applicant has estimated a groundwater flow rate of 100ft,Jday bi $w the site. The groundwater sampling sequence must be appropriate to evaluate the potential rapid changes in groundwater quality. 15. If the objective of the pilot project is to demonstrate that coal ash exhibits "inert" characteristics in a saturated medium, than coal ash should be compared to an industry recognized inert material under identical environmental conditions. With this in mind, CDPHE suggests that a"control" trench be constructed at this site. This trench would be backfilled with inert material such as, concrete or gravel. The hydrologic properties would be evaluated and compared to the coal ash trench. In addition, groundwater quality could be sampled downgradient of the control trench and this data compared to the groundwater quality of the coal ash trench. 16. Some trace elements in coal are naturally radioactive. These radioactive elements include uranium, thorium, radium and their numerous decay products. There are questions concerning possible risk from radiation. In order to accurately address questions regarding radioactive of coal ash, it is important to determine the,concentration and distribution of radioactive elements in the different.sources of bottom and fly ashproposed for tliii project. May 3, 1999 To: Glenn Mallory, Roger Doak From: Ken Niswonger Re: Comments on Varra Coal Ash Burial Project 1. Composition data on various ashes are provided in the Work Plan Analytical Data document; however, it is not known from sample descriptions which, if any, are the composition data for the ashes actually used in the leachate tests. For example, leachate data are presented for a material named"Bottom Ash", but there are compositional data for bottom ash from the Cameo, Arapahoe, Cameo #2, and Comanche units. The fly ashes used and named in the leachate tests cannot be reconciled with compositional data because the sample designations appear to differ with leachate sample designations. 2. According to the information provided by the power industry regarding ash material and the manner of generation of ash material considered for the Final Regulatory Determination of Large Volume Wastes From the Combustion of Coal by Electric Utility Power Plants (Federal Register, Vol. 58,No. 151), the manner of generation of these wastes typically involve commingling of bottom ash, fly ash, and possibly, with low volume wastes ranging from plant water to boiler chemical cleaning wastes. To assist in the evaluation of data generated by the proposed tests as they are applicable to the universe of potential ashes which may be represented by these data, please describe the generation, and management of the materials considered for disposal in the saturated environment present at the Varra Coal Ash Burial Project. 3. The Synthetic Groundwater Leaching Procedure (SGLP), where the samples were rolled for 18 hours in contact with groundwater from the site, does not provide the chemical characteristics (e.g.,_pH,Carbonate/BicarboJaate concentrations) of the groundwater prior to, or following these extraction tests. Furthermore, only one extraction was conducted on ash materials using the SGLP method. The SGLP results appear to produce dramatically lower concentrations of the principal metal ions (Al, Ba, Cr, Fe, Mg) and, trace metal ions (Be, B, Cd, Co, Pb, Se, V, Zn, and Li) as compared to the Sequential Extraction Leaching Procedure (SELP) at pH 5, 7, or 8.5. It is not apparent that these observable differences are related to actual chemistries of the groundwater, or whether the number of extractions performed on ashes using the SGLP procedure contributes to these differences. The SGLP was conducted following the TCLP J method and substituting groundwater for the extraction fluid. Varra May 3, 1999 Page 2 4. The TCLP method was conducted on all waste forms, but the extraction fluid(#1 or# 2) actually employed was not provided. This ought to be determined in the preliminary evaluations conducted for each waste form. The pH of the final extract was not provided as specified in method 1311 - TCLP, section 7.2.14. These data are useful in evaluating the leaching characteristics of waste form using TCLP, and response to the particular fluid. 5. Of the leach procedures employed for this project, only TCLP is a consensus methodology with information and documentation readily available for consultation. As such the particular reagents, controls, Quality Control features, and related performance data for these, or other wastes forms are not intimately known for the SELP, SGLP, and SCGLP procedures. For example, the pH of the leachate fluid for SELP is provided (5, 7, and 8.5), but the preparation of these fluids is not discussed. It is not known if buffered solutions were employed, or ratios of common mineral acids/bases, It is not known what the specification for water was for these solutions (ASTM Type II ?). The submittal included citations to possibly answer these questions, and others, but the time allotted for this evaluation, these reference materials could not be secured. For non-consensus methodologies utilized, provide the actual methods and deviations for the regulatory reviewer, and the public in general. 6. The first extraction of the SELP test was used to determine the suite of elements for the SGCLP test. Those not detected, or detected at very low concentrations were eliminated from further testing. The SGCLP table of elemental parameters indicate that Titanium and Mercury were actually eliminated from further consideration. There were no detections of Titanium reported using the SELP procedure for any waste form, or pH. However, not all of the second SELP extracts were actually analyzed for Titanium. Titanium is present in fly ash ranging fr,om a high of 0.9 % (9000 ug/g) to a low of 0.15 % (1500 ug/g) as demonstrated by the compositional data for different fly, and bottom ash. (See comment #1 relating to the inability to reconcile compositional data with materials used in the leach tests). There were positive detections of Hg in the first SELP extraction volume of two fly ashes, and one positive detection of Mercury in the second SELP extraction volume at the detection limit. The Mercury detections in the first SELP extraction volume were, indeed, small, but significantly above the detection limits coer vs 5t..:.(, I 7. As a summary, Table 6 accounts for failures of the groundwater protections standards by the various ash samples tested by the SELP and SGLP leach tests. Several elemental primary groundwater standards appear to be exceeded in one, or the other extractions representing the different fly ashes. None of the fly ash samples exceeded primary standards for Sb, Ag, Ti, As, Varra May 3, 1999 Page 3 or Hg, but numerous instances of failure of the primary standards for Ba, Be, Cr, Pb, Ni, and Se exist in these data. Also, the fly ash samples exceeded agricultural groundwater standards set for Al, B, Cu,Fe, and V. The bottom ash samples appear to fail only for secondary and agricultural groundwater standards, no failures of the primary groundwater standards were apparent for this material. Given the failures of primary and agricultural groundwater standards, and the proposed management scheme of placing the material into groundwater, these data may define an unacceptable risk to waters of the state. V 8. In response to comments regarding the Final Regulatory Determination of Large Volume Wastes From the Combustion of Coal by Electric Utility Power Plants (Federal Register, Vol. 58, No. 151, page 42476), EPA's discussion of this potential management technique suggested that management of ashes from combustion in unlined units sited over shallow groundwater with nearby drinking water wells may constitute a very limited risk to human health and the environment. The proposed management is disposal into saturated conditions. Furthermore, the EPA contemplated exceedances of secondary standards only, and did not forsee failure of the waste materials for primary standards. The EPA observed that applications of these waste forms to agricultural soil (Federal Register, Vol. 58, No. 151, page 42475), may cause some concern with metals uptake in food crops and cattle feed, and that Boron can, and has, infiltrated surface waters to exhibit phytotoxicity to wetlands. For these reasons "wet mana e t " techniques, such as disposal in ponds are b 'ng 1iscn, rang4 The SGLP extraction procedure using native groundwater as the leachate solution produced the lowest concentrations of pollutants, but did produce exceedances for Boron and Selenium On these observations and facts, I find it interesting that there are no conclusions drawn from the data by the industry, or the proposed investigator. 9. The proposed Quality Assurance Project Plan ("QAPP")for the Varra Coal Ash Work Plan suggests that quality control reporting will not be utilized unless requested. The plan need to specify what types of Quality Control will be accomplished, the frequency it will be accomplished, and the range of acceptable performance. The QAPP appears to be deficient in failing to define quantitative data quality objet ives, sampling process design, sampling method design, and sampling method requirements,analytical method requirements,'laboratory_quality control, data assessment and oversight, and data validation/verification.' 10. The Table 1-C provides a summary of parameters. The Department would have a preference for the use of SW-846, method 6010B because of the higher degree of quality control features, and procedural improvements. I i I TABLr, 1 RLP Analytical Results Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 Sample.ID Sample PV pH Al Sb As Ba Be B Cd :Ca Cr Co Cu Fe Pb LI Mg I. Data Ash Digest 04/05/00 30000 1.4 9.8 1000 2.7 880 <0.6 60000 16 2.9 23 11000 3.4 25 5300 02/28/00 1 10.5 <0.05 <0.006 <0.003 0.21 <0.004 1.6 <0.005 280 <0.01 <0.01 0.024 <0.01 <0.002 0.54 4.8 02/28/00 1 a <0.05 <0.006 <0.003 <0.02 <0.004 <0.10 <0.005 <0.20 <0.01 <0.01 <0.01 <0.01 <0.002 <0.02 <0.1 70/30 Ash/Soil 02/28/00 1b <0.05 <0.006 <0.003 <0.02 <0.004 <0.10 <0.005 0.22 <0.01 <0.01 <0.01 <0.01 <0.002 <0.02 <0.1 Leachate 03/03/00 2 10.1 <0.05 0.0085 <0.003 0.041 <0.004 1.3 <0.005 290 <0.01 <0.01 <0.01 <0.01 <0.002 0.45 99 03/10/00 4 9.3 <0.05 <0.006 <0.003 0.28 <0.004 2.5 <0.005 210.. <0.01 <0.01 <0.01 _ <0.01 <0.002 0.25 320 03/10/00 4a 9.3 <0.05 <0.006 <0.003 0.24 <0.004 2.3 <0.005 200 <0.01 <0.01 <0.01 <0.01 <0.002 0.23 310 03/27/00 8 8.5 0.081 <0.006 <0.003 0.11 0.0043 4.1 <0.005 340 <0.01 <0.01 <0.01 <0.01 <0.002 0.21 290 05/26/99 7.6 2.60 <0.006 <0.1 0.09 <0.004 0.21 <0.005 110 <0.01 <0.01 <0.01 1.80 0.052 0.20 53 Pond Water 12/20/99 8.3 <0.05 <0.006 <0.003 0.032 <0.004 0.44 <0.005 210 <0.01 <0.01 <0.01 <0.006 <0.002 0.057 290 02/28/00 8.2 <0.05 <0.003 <0.003 <0.02 <0.004 0.66 <0.005 170 <0.01 <0.01 <0.01 <0.01 <0.002 0.059 450 04/05/00 8.2 0.056 <0.003 <0.003 0.020 <0.004 0.62 <0.005 180 <0.01 <0.01 <0.01 <0.01 <0.002 0.060 440 Standards 5.0 0.006 OA50: 2:0. 0:004 0.75/5:0 0.005: :no std. 0;100 0,050 ,2011,0 Q.30/5L0 0,050 4:2.50 no std.. A P PP PAP P_ A A/S S/A P A . n/a Notes: NA=Not Analyzed PV=Pore Volume A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard 1 a-QA sample blank(deionized water) 1 b-blank with fluorescein 4a- blind duplicate All values reported in milligrams per liter(mg/L)except values for Ash Digest which are reported in milligrams per kilogram(mg/Kg) Page 1 of 3 Table J. RLP Analytical Results Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 Sample Sample ID Date PV. pH Mn Mo : NI P K So Ag Na TI TI V Zn Hg U Ash Digest 04/05/00 69 5.8 10 710 1100 6.6 <1 3000 1300 <2 56 34 0.14 8.6 02/28/00 1 10.5 <0.005 0.470 <0.004 <0.05 25 0.030 <0.01 570 <0.01 <0.002 <0.01 0.021 0.00035 0.0036 02/28/00 la <0.005 <0.01 <0.004 <0.05 <5 <0.005 <0.01 <1 <0.01 <0.002 <0.01 <0.02 <0.0002 <0.0009 70/30 Ash/Soil 02/28/00 lb <0.005 <0.01 <0.004 <0.05 <5 <0.005 <0.01 <1 <0.01 <0.002 <0.01 0.02 <0.0002 <0.0009 Leachate 03/03/00 2 10.1 <0.005 0.17 <0.004 <0.05 24 <0.005 <0.01 460 <0.01 <0.002 <0.01 <0.02 <0.0002 0.011 03/10/00 4 9.3 0.030 0.11 <0.004 <0.05 20 0.02 <0.01 400 <0.01 <0.002 0.012 <0.02 0.00024 0.021 03/10/00 4a 9.3 0.029 0.097 <0.004 <0.05 18 <0.02 <0.01 410 <0.01 <0.002 <0.01 <0.02 0.00021 0.022 03/27/00 8 8.5 0.057 0.11 <0.04 <0.05 16 <0.005 <0.01 500 <0.01 <0.002. 0.011 <0.02 <0.0002 0.023 05/26/99 7.6 0.58 <0.01 <0.004 NA <5 <.1 <0.01 120 0.078 <0.002 <0.01 <0.02 0.00022 NA 12/20/99 8.3 <0.005 NA <0.004 0.19 6.4 <.01 <0.01 300 NA <0.002 <0.01 <0.02 <0.0002 NA Pond Water 02/28/00 8.2 <0.005 <0.01 <0.004 <0.05 9.3 <0.005 <0.01 410 <0.01 <0.002 <0.01 <0.02 <0.0002 0.041 04/05/00 8.2 <0.005 <0.01 <0.04 0.09 10.0 <0.005 <0.01 460 <0.01 <0.002 <0.01 <0.02 <0.0002 0.047 0.050 no std. 0.200 no std. no std. 0.05/0.02 0.050 no std. no std: 0.002 0.10 2.0 0.002 no std. Standards S. P. P/A P P AA P Notes: NA=Not Analyzed PV=Pore Volume A-Agricultural Standard P- Primary Drinking Water Standard S-Secondary Drinking Water Standard 1 a-QA sample blank(deionized water) 1 b-blank with fluorescein 4a- blind duplicate All values reported in milligrams per liter(mg/L)except values for Ash Digest which are reported in milligrams per kilogram(mg/Kg) Page 2 of 3 1 , TAB,..;1 RLP Analytical Results Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 I Total Alkalinity as Alkalinity as. Alkalinity'.as Sample ID Date PV pH Chloride Fluoride Sulfate Nitrate Nitrite Alkalanity Bicarbonate - Carbonate Hydroxide Ash Digest 04/05/00 N/A N/A N/A N/A 120 93 , 3100 N/A N/A 02/28/00 1 10.5 220 <5 160 <5 160 1.5 1500 2.8 5.4 02/28/00 la <5 <5 <5 <5 <1 <0.1 <1 <0.1 <0.1 70/30 Ash/Soil 02/28/00 lb <5 <5 <5 <5 6.6 <0.1 13 <0.1 <0.1 Leachate 03/03/00 2 9.3 100 54 46 <5 110 0.71 2000 1.6 0.132 03/10/00 4 9.3 210 140 72 <5 - 95 1.3 2500 <0.2 0.32 03/10/00 4a 9.3 210 140 72 <5 94 1.2 2500 <0.2 0.30 03/26/00 8 8.5 150 140 10 <5 91 1.3 2600 <0.3 <0.3 05/26/99 7.6 NA NA <5 NA 59 0.76 320 9.8 <0.10 Pond Water 12/20/99 8.3 470 470 <5 <5 66 0.89 1500 17 <0.20 02/28/00 8.2 280 280 <5 <5 78 0.93 2800 0.91 0.79 04/05/00 8.2 290 290 <5 <5 77 0.98 2700 N/A N/A Standards no std. no std. no std. no std. 250 2.0 250 10 1 S A P P P Notes: NA=Not Analyzed PV=Pore Volume A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard 1 a-QA sample blank 1 b-blank with fluorescein Page 3 of 3 ATTACHMENT A se- » « , I / � r &.• \ ^ . / \ . � • . ( y « » » \ • * • View of reservoir and soil/ash column y \ \ / * / w } View of dif mpleand water-ash contact 2 v - . \ 2�yz� . � . . . . , \� y` ° . : , © / I \ § \ I \ < ` 4 4,741‘,1:t TV,44A . . < « A1 if i• 7 I it ' 241‘; | I II ' IA: : •I ? \ /\ \ y y \' @! y y \ / . « - .- , ? \ � , � �- . .��% :�y y � . . . View Z fluorescein advancing along alZhcontact » . \ » . . d T ./ < $ = 4.. 7 " 4 • . . .a.t / . a . . = I « q• si $ Saturated soil/ash _r— note lack of tluoresceincein mi + into ash a II . t j a ! II {, r*�5 l Millipore filter bomb , l Y - Sox }t °i'.- 1 J I N tie Fluorescein migration through gravel—note soil ash contact . . . . .ww « \ \ d t -. � :. 4 \ \ / / \ « ' P f . � . . . w 2 � ?<\• w : tal » > . » z � y _ '�: � «v « }f ° lk= '» : � yy 2 \ $ } {yw ^ / ; { 2\ 6 -: :/ . . ^ _ View of soil ash contact—note secondary mineral formation wa\ : » » ;fuel 1 \ § ; ` . »w , � -. I- ., « : \ : alr., View 4m— contact ATTACHMENT B Varra Coal Ash Project Selenium Calculation This spread sheet calculates the steady state concentration at a point of compliance well located at a distance (x) down-gradient of the source area. The calculations and methods are describe in ASTM-38 RBCA. Spread Sheet Calculations Enter Enter Porosity(sand 0.3, silt 0.35, clay 0.4) 0.27 Enter hydraulic gradient[ft/ft] 0.0023 Enter hydraulic conductivity[cm/s] 0.044 Enter first-order degradation constant 0 Enter distance (x)to point of compliance[ft] 50 Enter source width (perpendicular to flow in the horizonal plane) [ft] 100 Enter source width (perpendicular to flow in the vertical plane [ft] 7 Enter source area concentration (mg/L) 0.015 a.=longitudinal dispersivity[cm]=0.10x= 610 cm ay=transverse dispersivity[cm]=a./3 203.3333 cm ax=vertical dispersivity[cm]= a/20 30.5 cm Ground water velocity[cm/s] = 0.000375 cm/s 1st error function 1.368857 2nd error fuction 0.247406 erf(rt)=error function of evaluated for 1st function = 0.952884 erf(rt)=error function of evaluated for 2nd function = 0.27382 Steady State Concentration C(x) at Point of Compliance= 3.91 µq/L X S l r 1" rr Sd 11 C(x) = Coexp 2ax[1-111+ 4Aax u J}l erf[4 ayXJ erfl 4 a.xJl 4112 erf(r1) = 1- exp[ n 9 C (x) =dissolved phase concentration along centerline (x, y= 0, z=0) of dissolved plume [g/cm3-H2O] C source =dissolved phase concentration in dissolved plume source area [g/cm3-H2O] x=distance along center line from down-gradient edge of dissolved plume source (cm) a.= longitudinal dispersivity[cm] = 0.10x 7v=first order degradation constant[d1] u= Ki\$ ground water velocity[cm/d] S„,= source width (perpendicular to flow in the horizonal plane[cm] Sd=source width (perpendicular to flow in the vertical plane) [cm] ay=transverse dispersivity[cm]= a,/3 ax=vertical dispersivity[cm] = a/20 erf(rl)=error function of evaluated for valuer! Revised on March 18,1997 Page 1 Varra Coal Ash Project Selenium Calculation This spread sheet calculates the steady state concentration at a point of compliance well located at a distance (x) down-gradient of the source area. The calculations and methods are describe in ASTM-38 RBCA. Spread Sheet Calculations Enter Enter Porosity (sand 0.3, silt 0.35, clay 0.4) 0.27 Enter hydraulic gradient[fVft] 0.0023 Enter hydraulic conductivity[cm/s] 0.044 Enter first-order degradation constant 0 Enter distance (x)to point of compliance[ft] 200 Enter source width (perpendicular to flow in the horizonal plane) [ft] 100 Enter source width (perpendicular to flow in the vertical plane[ft] 7 Enter source area concentration (mg/L) 0.015 ax= longitudinal dispersivity[cm]=0.10x= 610 cm ay=transverse dispersivity[cm]= a13 203.3333 cm ai=vertical dispersivity[cm]= a,/20 30.5 cm Ground water velocity[cm/s] = 0.000375 cm/s 1st error function 0.684429 2nd error fuction 0.123703 erf(11)=error function of evaluated for 1st function = 0.670254 erf(11)=error function of evaluated for 2nd function = 0.138909 Steady State Concentration (C(x) at Point of Compliance/ = 1.40 µq/L C(x) = Coexpj X[1_111+ 41a 11�erfL S� ]Ierf L S� J�2ax a J1 4arx 4a.x1 411z erf(rj) = 1- exp(-1 n C (x)=dissolved phase concentration along centerline (x,y= 0, z=0) of dissolved plume [g/cm3-H2O] C source =dissolved phase concentration in dissolved plume source area [g/cm3-H2O] x=distance along center line from down-gradient edge of dissolved plume source (cm) ax=longitudinal dispersivity[cm]= 0.10x X=first order degradation constant[d-1] u= KiM) ground water velocity[cm/d] Sw=source width (perpendicular to flow in the horizonal plane[cm] Sd= source width (perpendicular to flow in the vertical plane) [cm] ay=transverse dispersivity[cm]= a,/3 a,=vertical dispersivity[cm]= a120 erf(R)=error function of evaluated for value Ti Revised on March 18,1997 Page 1 Varra Coal Ash Project Boron Calculation This spread sheet calculates the steady state concentration at a point of compliance well located at a distance (x) down-gradient of the source area. The calculations and methods are describe in ASTM-38 RBCA. Spread Sheet Calculations Enter Enter Porosity (sand 0.3, silt 0.35, clay 0.4) 0.27 Enter hydraulic gradient[ft/ft] 0.0023 Enter hydraulic conductivity[cm/s] 0.044 Enter first-order degradation constant 0 Enter distance (x)to point of compliance [ft] 50 Enter source width (perpendicular to flow in the horizonal plane) [ft] 100 Enter source width (perpendicular to flow in the vertical plane[ft] 7 Enter source area concentration (mg/L) 2.375 az= longitudinal dispersivity[cm]= 0.10x= 610 cm ay.transverse dispersivity[cm]= a/3 203.3333 cm ai=vertical dispersivity[cm] =a,/20 30.5 cm Ground water velocity[cm/s] = 0.000375 cm/s 1st error function 1.368857 2nd error fuction 0.247406 erf(r1)=error function of evaluated for 1st function = 0.952884 erf(r1)=error function of evaluated for 2nd function = 0.27382 Steady State Concentration C(x) at Point of Compliance= 619.68 µq/L siv C(x) = Coexp1 x �1—�1+4aax1,(erf[ �jJ�erf� S��j 2a= YYY u 44a yx 4 a:x rX772 erf(n) = 11- expl l C (x) =dissolved phase concentration along centerline(x, y=0, z=0) of dissolved plume[g/cm3-H2O] C source = dissolved phase concentration in dissolved plume source area[g/cm3-H2O] x= distance along center line from down-gradient edge of dissolved plume source (cm) ax= longitudinal dispersivity[cm]= 0.10x A.=first order degradation constant[d-1] u= Kh4 ground water velocity[cm/d] S„,=source width (perpendicular to flow in the horizonal plane[cm] Sd=source width (perpendicular to flow in the vertical plane) [cm] ay=transverse dispersivity[cm]= a,/3 a,=vertical dispersivity[cm] =a,/20 erf(r1)=error function of evaluated for value 71 Revised on March 18.1997 Page 1 Varra Coal Ash Project Boron Calculation This spread sheet calculates the steady state concentration at a point of compliance well located at a distance (x) down-gradient of the source area. The calculations and methods are describe in ASTM-38 RBCA. Spread Sheet Calculations Enter Enter Porosity(sand 0.3, silt 0.35, clay 0.4) 0.27 Enter hydraulic gradient[ft/ft] 0.0023 Enter hydraulic conductivity[cm/s] 0.044 Enter first-order degradation constant 0 Enter distance (x)to point of compliance[ft] 200 Enter source width (perpendicular to flow in the horizonal plane) [ft] 100 Enter source width (perpendicular to flow in the vertical plane[ft] 7 Enter source area concentration (mg/L) 2.375 ax= longitudinal dispersivity[cm]= 0.10x= 610 cm ay=transverse dispersivity[cm]=a,/3 203.3333 cm ai=vertical dispersivity[cm] =a/20 30.5 cm Ground water velocity(cm/s]= 0.000375 cm/s 1st error function 0.684429 2nd error fuction 0.123703 erf(r1)=error function of evaluated for 1st function = 0.670254 80011=error function of evaluated for 2nd function = 0.138909 Steady State Concentration (C(x) at Point l of Compliance=r wilerf 221.12 µq/L C(x) = Coexpj X L1-,11+4Aa`11�erfL L S� Jl 2ax YYY u JIJJ1 4aYx 4a�x11 ( 4n2 erf(rj) = 1- expl II C (x)= dissolved phase concentration along centerline(x, y=0, z=0) of dissolved plume [g/cm3-H2O] 3 C source = dissolved phase concentration in dissolved plume source area [g/cm -H2O] x= distance along center line from down-gradient edge of dissolved plume source (cm) a„=longitudinal dispersivity[cm] =0.10x 7v=first order degradation constant[d 1] u = Ki\$ ground water velocity[cm/d] Sw=source width (perpendicular to flow in the horizonal plane [cm] Sa=source width (perpendicular to flow in the vertical plane) [cm] ay=transverse dispersivity[cm]= a,J3 a,=vertical dispersivity [cm]= a/20 erf(q)=error function of evaluated for value in Revised on March 18,1997 Page 1 ATTACHMENT C 4798 . 75 479 . 5 479 47 9 X span: 0 to 1000 Y span: 0 to 1000 Varra Coal Ash Project Impermeable Barrier Scale 1" = 200 ' 479 .5 47 9 X span: 0 to 1000 Y span: 0 to 1000 Varra Coal Ash Disposal Permeable Barrier K = 0 . 1 ft/day Scale 1" = 200 ' l Ave vsaa Carr/ Mk ?I r . Ae" 7 -o ID KZ a p L_ lo' 7 .10 U N 0 in ID to .C c 4(z AsL Z W 0. _ _2 O S = i6r rv� Fp r-r� 4/T = 3/o = a_ zs- S/j = c r6 A _ 5/k, a -co- d( p [� q � G /t A _ 06°J V\- CJ Cir D -LL� , 66‘„ H �r / p • 60/e./ PA,In = l6' ( 0-ZS. /J'r'7 ) / 6 r 3 MI '11O 6d/ i1" / i+" /76-' Q Apia.✓ - T = (/Ls) (to) (b.Go33) v4,87•s- d,xk-tc . 14 A . `• p NI, � = tcAm. m a = (ZS' (ib i 60Ctf) c pi= s 671^~/ it a p = s5. 73 ',al6.., /c/0„-i it N -1- c = SS Sl3 x /061' = 5983 ,4/ /47 //at/ ._ o zw ATTACHMENT D VI 120 GROUNDWATER AND SEEPAGE [Sec.5-5 ' Sec.5-5f CONFINED FLOW 121 1.5 I . , position of the piling on the discharge for various combinations of depth fl 1.4 ; ? of embedment and size of structure. It is apparent from Fig. 5-18 that .g4 --/; although the discharge is a maximum when the sheetpile is at the center %, I.3 "• % of the structure, the variation with position is small (Fig. 5-19). Hence J" 1.2 f O �0; 1 1 I •t — Position A I.I N --- Position B or B` 4'-e' b-� s; L � 0.6� �20 1. 3/4n r\` a — \�� o.7 T --•. — o �o e/r=J 1,t e4.. 0.2 _ —_ ,v mnn ,,,mn,.owrmrv�/v 0.6 0.5 SO - 0.75 ` 0 0.4 7.00 - � 0 0.2 0.4 0.6 0.8 25 shT 0.3 FIG. 5-19 0.2 1.50 for design purposes the magnitude of the discharge for any position of the piling may be taken as that with the piling set at the center (Fig. 1 0.1 • 5-17). 0 Figure 5-17 demonstrates that the quantity of seepage decreases as y 0 0.l 0.2 0.3 o.a o.s o.6 0.7 as o.9 t.o either the depth of the sheetpile or the width of the weir increases; r however the benefit to be gained by increasing the depth of sheetpile Fw. 5-17. (After Polubarinova-Kochina [116].) embedment is seen to decrease sharply as the ratio of the width of the ; t weir to the thickness of the permeable layer increases. Indeed, for half- f widths larger than the thickness, the quantity of seepage is seen to be p; s/r�'/4 °/r=t/° I almost independent of the depth of embedment unless the sheetpile �2e 06'"�� extends close to the base of thepermeable layer. Thus little or no b VI"'7/3 bn=1/a Y I material advantage is to be gained by increasing the piling depth for n ratios of b/T 2 1 unless the piling can be driven into the impervious 0.5 s/r= /4 Or=//1 base. This is particularly noteworthy, as with increasing depths of y ? 57(.1/21 b/r='/a I driving the risk of faulty connections between the individual piling see- r -} O 45 1 °/r-V2 tions is also likely to increase. l. oa s/r= /z Finally, to obtain the discharge for other than flat-bottom structures, t®//A RD9CK7m..lfH we note that in Sec. 5-2 any streamline can be taken as an impervious boundary. Hence, recalling that q = 0>', by defining = 0 along the '.'I'-' 0.3 - base of the structure, one may obtain a good approximation to the dis- ±1 to x2 t< 0 charge quantity by assigning lif _ —q to any streamline in the vicinity of t x/° — the impervious boundary. The rather insensitive nature of K'/K i, Fm. 5-18 obviates the need for greater refinement. _ QA/QC REPORT METHOD BLANK SUMMARY PAGE: 1 CLIENT: TECH LINK 03/02/99 ORDERH: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE %REC FLAG LOW UPPER MB-DI LEACH Cyanide, Weak/Acid Disso mg/L 02/26/99 ND 0.010 MB(POND) CYANIDE, Total mg/L 02/26/99 ND 0.010 MB CHLORIDE by IC, Solids mg/Kg 02/18/99 ND 1.0 MB (S) CHLORIDE by IC, Solids mg/Kg 02/24/99 ND MB(POND) CHLORIDE by IC mg/L 02/26/99 76 20 D MB FLUORIDE by IC, Solids mg/Kg 02/18/99 .0 0.50 MB(pond) FLUORIDE by IC mg/L 02/25/99 4.0 0.10 MB NITRATE as N by IC, Solids mg/Kg 02/18/99 ND 0.50 MB NITRATE as N mg/L 02/26/99 ND 0.10 MB(pond) NITRATE as N mg/L 02/25/99 1.0 0.10 MB POND NITRITE as N by IC mg/L 02/18/99 ND 0.10 MB NITRITE as N by IC mg/L 02/24/99 ND 0.10 MB NITRITE as N by IC mg/L 02/25/99 ND 0.10 MB SULFATE by IC, Solids mg/Kg 02/18/99 ND 7.5 MB SULFATE by IC mg/L 02/24/99 ND 0.50 MBIPOND) SULFATE by IC mg/L 02/26/99 2900 50 D M_ 8001"/1 ICP Metals, Total mg/L 02/25/99 Aluminum ND 0.050 Antimony ND 0.050 Arsenic ND 0.050 Barium 0.0096 0.0040 Beryllium ND 0.0020 Boron 0.30 0.050 Cadmium ND 0.0050 Chromium ND 0.010 Cobalt ND 0.010 Copper ND 0.0050 Iron 0.056 0.050 Lead ND 0.050 Lithium 0.027 0-010 Magnesium 220 0.10 Manganese 0.028 0.010 Molybdenum 0.010 0.0050 Nickel ND 0.010 potassium 4.8 1.0 Selenium ND 0.10 Silicon ND 0.50 Silver ND 0 0050 Sodium 210 3.0 Strontium 1 .0 0.050 Thallium ND 0.20 Tin ND 0.050 Titanium ND 0.050 vanadium ND 0.010 Zinc ND 0.0050 QA/QC REPORT �-• METHOD BLANK SUMMARY PAGE: 2 CLIENT: TECH LINK 03/02/99 ORDER!: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE %REC FLAG LOW UPPER MB-990017O ICP Metals, Total mg/L 02/25/99 Aluminum ND 0.050 Antimony ND 0.050 Arsenic ND 0.050 Barium ND 0.0040 Beryllium ND 0.0020 Boron ND 0.050 Cadmium ND 0.0050 Calcium ND 0.10 Chromium ND 0.010 Cobalt ND 0.010 Copper ND 0.0050 Iron ND 0.050 Lead ND 0.050 Lithium ND 0.010 Magnesium ND 0.10 Manganese ND 0.010 Molybdenum ND 0.0050 Nickel 0.013 0.010 Potassium ND 1.0 Selenium ND 0.10 Silicon ND 0.50 Silver ND 0.0050 Sodium 1400 3.0 Strontium ND 0.050 Thallium ND 0.20 Tin ND 0.050 Titanium ND 0.050 Vanadium ND 0.010 Zinc ND 0.0050 QA/QC REPORT `" METHOD BLANK SPIKE SUMMARY PAGE: 3 CLIENT: TECH_LINK 03/02/99 ORDER#: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE REF VAL %REC FLAG LOW UPPER MBS-DILEACH Cyanide, Weak/Acid Disso mg/L 02/26/99 0.22 0.010 0.20 0 110 80 120 MBSD-WAD Cyanide, Weak/Acid Disso mg/L 02/26/99 0.21 0.010 0-20 0 105 80 120 MBS CHLORIDE by IC, Solids mg/Kg 02/18/99 28 1.0 25 ND 112 BO 120 MBS (S) CHLORIDE by IC, Solids mg/Kg 02/24/99 27 1.0 25 ND 111 BO 120 MBS)POND) CHLORIDE by IC mg/L 02/26/99 630 20 500 76 111 80 120 MBS FLUORIDE by IC, Solids mg/Kg 02/18/99 14 0.50 12.5 ND 112 80 120 MBS FLUORIDE by IC mg/L 02/25/99 2.7 0.10 2.5 ND 108 80 120 MDS NITRATE as N by IC, Solids mg/Kg 02/18/99 14 0.50 13 ND 108 BO 120 MBS NITRATE aS N mg/L 02/25/99 2.8 0.10 2.5 ND 112 80 120 MBS NITRATE as N mg/L 02/26/99 3.9 0.10 2.5 1.0 116 80 120 MRS POND NITRITE as N by IC mg/L 02/18/99 2.7 0.10 2.5 ND 108 80 120 MBS NITRITE as N by IC mg/L 02/25/99 2.7 0.10 2.5 ND 108 80 120 MRS NITRITE as N by IC mg/L 02/26/99 2.7 0.10 2.5 ND 108 80 120 MBS SULFATE by IC, Solids mg/Kg 02/18/99 200 7.5 187.5 ND 107 BO 120 MBS SULFATE by IC mg/L 02/24/99 40 0.50 38 ND 105 80 120 t OND) X SULFATE by IC mg/L 02/26/99 7000 50 3800 2900 108 80 120 MBS-5900171 ICP Metals, Tota) mg/L 02/25/99 Aluminum 2.0 0.050 2.0 ND 100 80 120 Antimony 0.45 0.050 0 50 ND 90.0 80 120 Arsenic 2.0 0.050 2.0 ND 100 80 120 Barium 1.9 0.0040 2.0 0.0096 94.5 80 120 Beryllium 0.048 0.0020 0.050 ND 96.0 80 120 Boron 0.95 0.050 0.50 0.30 130 • 80 120 Cadmium 0.041 0.0050 0.050 ND 82.0 80 120 Calcium 150 0.10 10 79 NC 80 120 Chromium 0.19 0.010 0.20 ND 95.0 80 120 Cobalt 0.44 0.010 0.50 ND 88.0 an 120 Copper 0.24 0.0050 0.25 ND 96.0 80 120 Iron 1.0 0.050 1.0 0.056 94 .4 80 120 Lead 0.47 0.050 0.50 ND 94 .0 80 120 Lithium 0.48 0.010 0.50 0.027 90.6 80 120 Magnesium 410 0.10 10 220 NC 80 120 Manganese 0.50 0.010 0.50 0.028 94 .4 00 120 Molybdenum 0.48 0.0050 0.50 0.010 94.0 80 120 Nickel 0.44 0.010 0.50 ND 08.0 80 120 Potassium 17 1.0 10 4.8 122 • an 120 Selenium 2.3 0.10 2.0 ND 115 80 120 Silicon 4 .9 0.50 5.0 ND 98.0 BO 120 Silver 0.045 0.0050 0.050 ND 90 0 80 .20 — Sodium 400 3.0 10 210 NC 80 12C Strontium 2.3 0.050 0.50 1 .0 260 • 80 120 Thallium 0.34 0.20 0.50 ND 68.0 80 120 Tin 0.44 0.050 0.50 ND 88.0 80 120 Titanium 0.48 0.050 0.50 ND 96 0 80 120 Vanadium 0.48 0.010 0.50 ND 96.0 80 120 Zinc 0.45 0.0050 0.50 ND 90 0 80 120 _. QA/OC REPORT METHOD BLANK SPIKE SUMMARY PAGE: 4 CLIENT: TECH LINK 03/02/99 ORDERS: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE REF VAL %REC FLAG LOW UPPER MBS-9900170 ICP Metals, Total mg/L 02/25/99 Aluminum - 1.8 0.050 2.0 ND 90.0 80 120 Antimony 0.94 0.050 0.50 ND 88.0 80 120 Arsenic 2.1 0.050 2.0 ND 105 80 120 Barium 1.9 0.0040 2.0 ND 95.0 80 120 Beryllium 0.048 0.0020 0.050 ND 96.0 80 120 Boron 0.38 0.050 0.50 ND 76.0 . 80 120 Cadmium 0.042 0.0050 0.050 ND 84.0 BO 120 Calcium 8.3 0.10 10 ND 83.0 BO 120 Chromium 0.19 0.010 0.20 ND 95.0 80 120 Cobalt 0.44 0.010 0.50 ND 88.0 80 120 Copper 0.24 0.0050 0.25 ND 96.0 80 120 Iron 0.90 0.050 1.0 ND 90.0 80 120 Lead 0.45 0.050 0.50 ND 90.0 80 120 Lithium 0.41 0.010 0.50 ND 82.0 80 120 Magnesium 9.1 0.10 10 ND 91.0 80 120 Manganese 0.45 0.010 0.50 ND 90.0 80 120 Molybdenum 0.46 0.0050 0.50 ND 92.0 80 120 Nickel 0-45 0.010 0.50 0.01] 87.4 80 120 Potassium 8.3 1-0 10 ND 83.0 80 120 Selenium 2.3 0.10 2.0 ND 115 BO 120 Silicon 4.2 0-50 5.0 ND 84.0 80 120 Silver 0.045 0-0050 0.050 ND 90.0 80 120 sodium 1500 3.0 10 1400 NC 80 120 Strontium 0.44 0.050 0.50 ND 88.0 80 120 Thallium 0.40 0.20 0.50 ND 80-0 80 120 Tin 0.46 0.050 0.50 ND 92.0 80 120 Titanium 0.47 0.050 0.50 ND 94.0 80 120 '✓anadium 0.46 0.010 0.50 ND 92.0 80 120 Zinc 0.44 0.0050 0.50 ND 88.0 BO 120 '- QA/QC REPORT MATRIX SPIKE SUMMARY PAGE: 5 CLIENT: TECH LINK 03/02/99 ORDER4: 9902158 OC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE REF VAL kREC FLAG LOW UPPER K902156-018 Cyanide, Weak/Acid Disso mg/L 02/26/99 0.13 0.010 0.20 0 65.0 70 130 5902158-088 Cyanide, Weak/Acid Disso mg/L 02/26/99 0.17 0.010 0.20 0 85.0 70 130 9902158-078 CHLORIDE by IC mg/L 02/26/99 160 2.0 50 110 100 70 130 9902158-07B FLUORIDE by IC mg/L 02/25/99 2.4 0.10 2.5 0.20 88.0 70 130 9902221-04D NITRATE as N mg/L 02/25/99 9.6 0.10 2.5 7.2 96.0 70 130 9902158-078 NITRITE as N by IC mg/L 02/25/99 2.9 0.10 2.5 ND 116 70 130 9902158-078 SULFATE by IC mg/L 02/26/99 6700 50 3800 2500 111 70 130 5902158-07A ICP Metals, Total mg/L 02/25/99 Aluminum 2.4 0.050 2.0 0.32 104 70 130 Antimony 0.45 0.050 0.50 ND 90.0 70 130 Arsenic 2.0 0.050 2.0 ND 100 70 130 Barium 1.9 0.0040 2.0 0.11 89.5 70 130 Beryllium 0.047 0.0020 0.050 ND 94.0 70 130 Boron 0.52 0.050 0.50 0.13 78.0 70 130 Cadmium 0.041 0.0050 0.050 ND 82.0 70 130 Calcium 420 0.10 10 420 NC 7C 130 Chromium 0.24 0.010 0.20 0.068 86.0 73. L30 Cobalt 0.43 0.010 0.50 ND 86.0 70 130 Copper 0.25 0.0050 0.25 0.012 95.2 70 130 Iron 1.1 0.050 1.0 0.22 88.0 70 130 Lead 0.47 0.050 0.50 ND 94.0 70 130 Lithium 0.48 0.010 0.50 0.054 85.2 70 130 Magnesium 160 0.10 10 150 100 70 130 Manganese 0.44 0.010 0.50 ND 88.0 70 130 Molybdenum 0.48 0.0050 0.50 0.029 90.2 70 130 Nickel 0.44 0.010 0.50 ND 88.0 70 130 Potassium 28 1.0 10 20 80.0 Y :3(: Selenium 2.3 0.10 2.0 ND 115 70 130 Silicon 9.4 0.50 5.0 4 .0 90.0 70 130 Silver 0.040 0.0050 0.050 ND 80.0 70 130 Sodium 400 3.0 10 400 NC 70 Strontium 2.9 0.050 0.50 2 5 80.0 30 130 Thallium 0.36 0.20 0.50 ND 72.0 70 130 Tin 0.43 0.050 0.50 ND 86.0 70 130 Titanium 0.47 0.050 0.50 ND 94.0 70 ._. Vanadium 0.47 0.010 0.50 0 012 91.6 30 :30 Zinc 0.44 0.0050 0.50 0 011 85.8 70 !30 - QA/QC REPORT MATRIX SPIKE SUMMARY PAGE: 6 CLIENT: TECH LINK 03/02/99 ORDER&: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE REF VAL tREC FLAG LOW UPPER 5902158-01A ICP Metals, Total mg/L 02/25/99 Aluminum 1.9 0.050 2.0 ND 95.0 70 130 Antimony 0.48 0.050 0.50 ND 96.0 70 130 Arsenic 2.0 0.050 2.0 ND 100 70 130 Barium 2.1 0.0040 2.0 0.36 87.0 70 130 Beryllium 0.047 0.0020 0.050 ND 94.0 70 130 Boron 0.56 0.050 0.50 0.17 78.0 70 130 Cadmium 0.040 0.0050 0.050 ND 80.0 70 130 Calcium 560 0.10 10 560 NC 70 130 Chromium 0.24 0.010 0.20 0.061 89.5 70 130 Cobalt 0.40 0.010 0.50 ND 80.0 70 130 Copper 0.26 0.0050 0.25 0.012 99.2 70 130 Iron 0.84 0.050 1.0 ND 84.0 70 130 Lead 0.45 0.050 0.50 ND 90.0 70 130 Lithium 0.43 0.010 0.50 0.019 82.2 70 130 Magnesium 15 0.10 10 5.6 94.0 70 130 Manganese 0.42 0.010 0.50 ND 84.0 70 130 Molybdenum 0.47 0.0050 0.50 0.020 90.0 70 130 Nickel 0.40 0.010 0.50 ND 80.0 70 130 Potassium 19 1.0 10 11 80.0 70 130 Selenium 2.3 0.10 2.0 ND 115 70 130 Silicon 22 0.50 5.0 18 80.0 70 130 Silver 0.043 0.0050 0.050 ND 86.0 70 130 Sodium 1500 3.0 10 1500 NC 70 130 Strontium 2.9 0.050 0.50 2.5 80.0 70 130 Thallium 0.42 0.20 0.50 ND 84.0 10 130 Tin 0.43 0.050 0.50 ND 86.0 70 130 Titanium 0.46 0.050 0.50 ND 92.0 70 130 Vanadium 0.49 0.010 0.50 0.041 89.8 70 130 Zinc 0.42 0.0050 0.50 ND 84.0 70 130 QA/QC REPORT ..._. SAMPLE DUPLICATE SUMMARY PAGE: 7 CLIENT: TECH LINK 03/02/99 ORDERS: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT REF VAL %RPD FLAG UPPER O902158-018 Cyanide, Weak/Acid Disso mg/L 02/26/99 0.0 0.010 0 NC 20 D902158-088 Cyanide, Weak/Acid Disso mg/L 02/26/99 0.0 0.010 0 NC 20 9902158-070 CHLORIDE by IC mg/L 02/26/99 110 2.0 110 0.0 20 9902158-078 FLUORIDE by IC mg/L 02/25/99 0.19 0.10 0.20 NC 20 9902158-078 NITRATE as N mg/L 02/25/99 1.3 0.10 1.2 8.00 20 9902158-078 NITRITE as N by IC mg/L 02/25/99 0.12 0.10 ND NC 20 9902158-078 SULFATE by IC mg/L 02/26/99 2500 50 2500 NC 20 O902158-07A ICP Metals, Total mg/L 02/25/99 Aluminum 0.32 0.050 0.32 0.0 20 Antimony ND 0.050 ND NC 20 Arsenic ND 0.050 ND NC 20 Barium 0.11 0.0040 0.11 0.0 20 Beryllium ND 0.0020 ND NC 20 Boron 0.13 0.050 0.13 0.0 20 Cadmium ND 0.0050 ND NC 20 Calcium 420 0.10 420 0.0 20 Chromium 0.063 0.010 0.068 NC 20 Cobalt ND 0.010 ND NC 20 Copper 0.010 0.0050 0.012 NC 20 Iron 0.23 0.050 0.22 4.44 20 Lead ND 0.050 ND NC 20 Lithium 0.055 0.010 0-054 1-33 CC 21 Magnesium '-50 0.10 150 0.0 71. Manganese ND 0.010 ND NC 20 Molybdenum 0.025 0.0050 0.029 NC 20 Nickel ND 0.010 ND NC 20 Potassium 20 1-0 20 0.0 20 Selenium ND 0.10 ND NC 21 Silicon 4.9 0.50 4 .9 0.0 20 Silver ND 0.0050 ND NC 20 Sodium 400 3-0 400 0-0 2c Strontium 2.5 0.050 2.5 0.0 2C Thallium ND 0.20 ND NC 2 , TinND 0.050 ND NC 20 Titanium ND 0.050 ND NC 25 Vanadium ND 0.010 0.012 NC Lu Zinc 0-010 0.0050 0 011 NC 20 ' QA/QC REPORT SAMPLE DUPLICATE SUMMARY PAGE, 8 CLIENT: TECH LINK 03/02/99 ORDERP: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT REF VAL %RPD FLAG UPPER D902158-01A ICP Metals, Total mg/L 02/25/99 Aluminum ND 0.050 ND NC 20 Antimony ND 0.050 ND NC 20 Arsenic ND 0.050 ND NC 20 Barium 0.36 0.0040 0.36 0.0 20 Beryllium ND 0.0020 ND NC 20 Boron 0.17 0.050 0.17 0.0 20 Cadmium ND 0.0050 ND NC 20 Calcium 560 0.10 560 0.0 20 Chromium 0.063 0.010 0.061 3.23 20 Cobalt ND 0.010 ND NC 20 Copper 0.013 0.0050 0.012 NC 20 Iron ND 0.050 ND NC 20 Lead ND 0.050 ND NC 20 Lithium 0.020 0.010 0.019 NC 20 Magnesium 5.6 0.10 5.6 0.0 20 Manganese ND 0.010 ND NC 20 Molybdenum 0.022 0.0050 0.020 NC 20 Nickel ND 0.010 ND NC 20 Potassium 11 1.0 11 0.0 20 Selenium ND 0.10 ND NC 20 Silicon 18 0.50 18 0.0 20 Silver ND 0.0050 ND NC 20 Sodium 1500 3.0 1500 0-0 20 Strontium 2.5 0.050 2.5 0.0 20 Thallium ND 0.20 ND NC 20 Tin ND 0.050 ND NC 20 Titanium ND 0.050 ND NC 20 Vanadium 0.043 0.010 0 041 NC 20 Zinc ND 0.0050 ND NC 20 06/'23/1999 10:58 481-8554 bMKMbi r,-,0c us / .5 iv AN✓F c-�5�S 3251nterbcken PaSuitrkway 00 Broomfield,CO 80021 Cyk (303)469-8889 (800)873-8707 [' i^.��.,17^ - FM:(303)469525a ANAELAnOR tOPXES an Melyrica Group camPAny Colorado State Unversity Order #: 99-06-012 1015-M S Taft Hill Rd #420 Date: 06/17/99 14:09 Ft. Collins, CO 80521 Work ID: FLY ASH Date Received: 05/28/99 Attn: Dan Warner Date Completed: 06/17/99 SAMPLE IDENTIFICATION Sample Sample Number Client Description Number Client Description 01 BOTTOM ASH 03 CHEROKEE SILO ASH 02 CLASS F SILO ASH 04 CHEROKEE 4 ASH Enclosed are the analytical results for the submitted sample (s) . Please review the CASE NARRATIVE for a discussion of any data and/or quality control issues. A listing of data qualifiers and analytical codes is located on the TEST METHODOLOGIES page at the end of the report. If you have any questions regarding the analyses, please feel free to call. Sincerely. 191zon.w.n.c_ 10•4 Jeanine M. Camp Project Manager 0b/2J/17y7 1tl: 7tl 471-0774 JMKMbl rMUC GL Colorado State Unvereity Page 2 Order A9 CASE NARRATIVE ANALYTICA, SNC.NC. Samples were prepared and analyzed according to methods outlined in the following references: o Methods for the Determination of Inorganic Substances in Environmental Samples, EPA/600/R-93/100, August 1993 . o Test Methods for Evaluating Solid Waste, USEPA SW-846, Third Edition, Revision 4, December 1996. All analyses meet quality assurance objectives. The samples were very inhomogenous thus there was poor sample duplication and poor matrix spike recovery for several ICP analytes. bbf4i/1yy7 10:J0 401-0304 .J.,i.nui . , - Order IS 99-06-012 Colorado State Unversity Page 3 ANALYTICA, INC. TEST RESULTS by SAMPLE Sample: Olk BOTTOM ASH Collected: 05/21/99 Matrix: ASK Method Result _Q_ Limit Units Analyzed Ty Description SW 9010 ND 0.25 mg/Kg 06/07/99 Cyanide, nide, Total 56 0.2 mg/Kg 06/04/99 Chloride in Soil by IC SW 9056M 06/04/99 Fluoride in Soil by IC SW 9056M 1.3 0.10 mg/Kg 4 0.10 mg/Kg 06/04/99 Nitrate as N in 2 Soil by IC SW 9056M ND 0 10 mg/Kg 06/04/99 Nitrite as N in Soil by IC SW 9056M 410 2.5 mg/Kg 06/09/99 Sulfate in Soil by IC SW 9056M XCP Metals, Total SW 6010B Aluminum 11000 5 .0 mg/Kg 06/10/99 ND 06/10/99 10 mg/Kg Antimony ND 10 mg/Kg 06/10/99 Bariumc 340 1.0 mg/Kg 06/10/99 Barium 0.50 0.20 mg/Kg 06/10/99 Beryllium 120 5 .0 mg/Kg 06/10/99 Boron ND 0.50 mg/Kg 06/10/99 Calcium 8500 10 mg/Kg 06/10/99 Chromimtum ND 2 .0 mg/Kg 06/10/99 Cora ND 3 .0 mg/Kg 06/10/99 Cobalt 6.1 0.50 mg/Kg 06/10/99 Ironer 5300 5 .0 mg/Kg 06/10/99 Iron ND 5.0 mg/Kg 06/10/99 Lead 6.2 5.0 mg/Kg 06/10/99 Lithes 2100 10 mg/Kg 06/10/99 Magnesium 24 1.0 mg/Kg 06/10/99 Manganese n ND 2.0 mg/Kg 06/10/99 Nicybleum ND 4 0 mg/Kg 06/10/99 Notassumm 300 100 mg/Kg 06/10/99 Sete ND 10 mg/Kg 06/10/99 Selenium 590 50 mg/Kg 06/10/99 Silver ND 0 .50 mg/Kg 06/10/99 Sodium 1100 300 mg/Kg 06/10/99 Sodium 490 5 .0 mg/Kg 06/10/99 Taliliuumm ND 40 mg/Kg 06/10/99 Thal m ND 5.0 mg/Kg 06/10/99 Tin 300 5.0 mg/Kg 06/10/99 Vancdium nadium 6.8 1.0 mg/Kg 06/10/99 Zi 7.5 0 .50 mg/Kg 06/10/99 Zinc ND 0 .10 mg/Kg 06/09/99 Mercury, Total 7471 06/23/1999 10: 58 491-8554 JMKHCI rAUe. 04 Order # 99-06-012 Colorado State Unveraity Page 4 ANALYTICA, '1NC TEST RESULTS by SAMPLE Sample 02A CLASS F SILO ASH Collected: 05/21/99 Matrix: ASH Method Result 0 Limit Units Analyzed Test Description Totalon ND 0.25 mg/Kg 06/07/99 Cyanide, Total SW 9010 SW 9056M 360 D 5 .0 mg/Kg 06/09/99 Chloride u in Soil by IC SW 9056M 46 0.10 mg/Kg 06/04/99 Flu sn Sinl by IC 20 0.10 mg/Kg 06/04/99 Nitrate as N in Soil by IC SW 9056M 010 mg/Kg 06/04/99 Nitrite as N in Soil by IC SW 9056M 33 . 06/09/99 Sulfate in Soil by IC SW 9056M 3000 D 13 mg/Kg ICP Metals, Total SW 6010E Aluminum 40000 5 .0 mg/Kg 06/10/99 ND 06/10/99 Antimony s 10 mg/Kg ND 10 mg/Kg 06/10/99 Baiumc 1800 1.0 mg/Kg 06/10/99 eryll 4.1 0.20 mg/Kg 06/10/99 Beryllium 660 5.0 mg/Kg 06/10/99 Boron 0.53 0 .50 mg/Kg 06/10/99 Cadmium 100000 10 mg/Kg 06/10/99 Calcium 21 2 .0 mg/Kg 06/10/99 Chromium 5.9 3.0 mg/Kg 06/10/99 Cobalt 29 0 .50 mg/Kg 06/10/99 Copper 12000 5.0 mg/Kg 06/10/99 Iron 17 5.0 mg/Kg 06/10/99 Lead 22 5 .0 mg/Kg 06/10/99 Lithium 5800 10 mg/Kg 06/10/99 Mangaese 110 1.0 mg/Kg 06/10/99 Manganese n 4.7 2.0 mg/Kg 06/10/99 Nickeleum 16 4.0 mg/Kg 06/10/99 Nickel 1200 100 mg/Kg 06/10/99 Seleniumm ND 10 mg/Kg 06/10/99 Slicon 5600 SO mg/Kg 06/10/99 Silvers ND 0.50 mg/Kg 06/10/99 Silver 5500 300 mg/Kg 06/10/99 Sodium 1300 5 .0 mg/Kg 06/10/99 Thal ND 40 mg/Kg 06/10/99 Thallliumm ium ND 5 .0 mg/Kg 06/10/99 Tin 1700 5.0 mg/Kg 06/10/99 Vanadiumcdium 66 1.0 mg/Kg 06/10/99 Vi 32 0.50 mg/Kg 06/10/99 Zinc 0.10 0.10 mg/Kg 06/09/99 Mercury, Total 7471 tlb/t0/1777 1p:ots 4J1-oOO4 u.+i".u+ _. Order 8 99-06-012 Colorado State unvereity Page 5 ANALYTICA, INC. TEST RESULTS by SAMPLE Sample: 03A CHEROKEE SILO ASR Collected: 05/21/99 Matrix: ASH Method Result _Q_ Limit Units Analyzed Test Cyan e Lion ND 0.25 mg/Kg 06/07/99 Cyanidde,, T Tootal SW 9010 2.0 0.2 mg/Kg 06/04/99 Chloride in Soil by IC SW 9056M 0.12 mg/Kg 06/04/99 SW 9056M 31 06/04/99 Fluoride t in Soil ND 0.10 mg/Kg by IC Nitrate as N in Soil by IC SW 9056M ND 0.10 mg/Kg 06/04/99 Nitrite as N in Soil by IC SW 9056M 2500 D 25 mg/Kg 06/09/99 Sulfate in Soil by IC SW 9056M ICP Metals, Total SW 6010B 5 0 mg/Kg 06/10/99 2800006/10/99 Aluminum ND 10 mg/Kg Antimony ND 10 mg/Kg 06/10/99 Arsenic ru 1600 1.0 mg/Kg 06/10/99 Beryllium Barium 2.5 0.20 mg/Kg 06/10/99 n ?90 5.0 mg/Kg 06/10/99 BCadmium 0 70 0.50 mg/Kg 06/10/99 Calcium 26000 10 mg/Kg 06/10/99 Chromic 9.0 2 .0 mg/Kg 06/10/99 Chromium 3 .5 3 .0 mg/Kg 06/10/99 Cobalt 23 0.50 mg/Kg 06/10/99 Copper 11000 5.0 mg/Kg 06/10/99 Iron 25 5.0 mg/Kg 06/10/99 Lead 23 5.0 mg/Kg 06/10/99 Magnesm 4800 10 mg/Kg 06/10/99 Mangaese 46 1.0 mg/Kg 06/10/99 Manganese 6.6 2.0 mg/Kg 06/10/99 Molybdenum 5.7 4.0 mg/Kg 06/10/99 Nickel 880 100 mg/Kg 06/10/99 Seleniumm ND 10 mg/Kg 06/10/99 Silicon 50 mg/Kg 06/10/99 1700 06/10/99 Silicon 0.51 0.50 mg/Kg Sodium 2400 300 mg/Kg 06/10/99 Sodium 1600 5.0 mg/Kg 06/10/99 Thalliumm ND 40 mg/Kg 06/10/99 Thallium um 5.0 mg/Kg 06/10/99 Tin 1600 5.0 mg/Kg 06/10/99 Titanium 39 1.0 mg/Kg 06/10/99 vanadium 26 0 .50 mg/Kg 06/10/99 Zinc 1.4 0 .10 mg/Kg 06/09/99 Mercury, Total 7471 . 06/23/1999 10: 58 491-8554 5AKALSI rNut no Order M 99-06-012 Colorado State Unvereity Page 6 ANALYTICA,INC. TEST RESULTS by SAMPLE Sample: 04A CHEROKEE 4 ASH Collected: 05/21/99 Matrix: ASH Method Result Q__ Limit Unite Analyzed Test de, Totalon ND 0.25 mg/Kg 06/07/99 Cyanide, Total SW 9010 SW 9056M 1.0 0.2 mg/Kg 06/04/99 Chloride in Soil by IC 25 0.10 mg/Kg 06/04/99 Fluoride in Soil by IC SW 9056M 06/04/99 Nitrate as N in Soil by IC SW 9056M ND 0.10 mg/Kg 06/04/99 Nitrite as N in Soil by IC SW 9056M ND 0.10 mg/Kg 06/09/99 Sulfate in Soil by IC SW 9056M 2200 D 25 mg/Kg ICP Metals, Total SW 6010B Aluminum 25000 5.0 mg/Kg 06/10/99 06/10/99 Antimony ND 10 mg/Kg ND 10 mg/Kg 06/10/99 Bariumc 1400 1.0 mg/Kg 06/10/99 Beryllium 2.1 0 .20 mg/Kg 06/10/99 Boro 760 5.0 mg/Kg 06/10/99 Boron 0.68 0.50 mg/Kg 06/10/99 Cadmium 21000 10 mg/Kg 06/10/99 Calcium 13 2 .0 mg/Kg 06/10/99 Chromium 3 .1 3 .0 mg/Kg 06/10/99 Coppel r 21 0.50 mg/Kg 06/10/99 Ironer 9700 5.0 mg/Kg 06/10/99 Iron 19 5.0 mg/Kg 06/10/99 Lead 22 5.0 mg/Kg 06/10/99 Lithium 4200 10 mg/Kg 06/10/99 Magnesium bd 44 1.0 mg/Kg 06/10/99 Manganese 6.0 2 .0 mg/Kg 06/10/99 Molyenum 4.8 4 .0 mg/Kg 06/10/99 Potsl 1100 100 mg/Kg 06/10/99 Selenium ND 10 mg/Kg 06/10/99 Silion 1100 50 mg/Kg 06/10/99 Silicon ND 0.50 mg/Kg 06/10/99 Soler 2200 300 mg/Kg 06/10/99 Strinm 1400 5.0 mg/Kg 06/10/99 Thalliumm ND 40 mg/Kg 06/10/99 Tinllim ND 5.0 mg/Kg 06/10/99 Tin 1200 5.0 mg/Kg 06/10/99 Titanium 44 1.0 mg/Kg 06/10/99 Vanadium 06/10/99 Zinc 30 0.50 mg/Kg 06/09/99 Mercury, Total 7471 0.68 0.10 mg/Kg 06/23/1999 10: 58 491-8554 5AKA81 rAat ei Order # 99-06-012 Colorado State unversity Page 7 1 LYTICA INC TEST METHODOLOGIES THE FOLLOWING CODES APPLY TO THE ANALYTICAL REPORT RESULT field. . . ND = not detected at the reported limit NA = analyte not applicable (see case narrative/methods for discussion) Q (qualifier) field. . . GENERAL: * = Recovery or %RPD outside method specifications H = value is estimated due to analysis run outside EPA holding times E a reported concentration is above the instrument calibration range D = analyte was diluted to bring within instrument calibration range or to remove matrix interferences ORGANIC ANALYSIS DATA QUALIFIERS: B = analyte was detected in the laboratory method blank T = analyte was detected above the instrument detection limit (IDL) but below the analytical reporting limit (CRDL) INORGANIC ANALYSIS DATA QUALIFIERS: B = analyte was detected above the instrument detection limit (IDL) but below the analytical reporting limit (CRDL) W = post digestion spike did not meet criteria (85-115%) S = reported value determined by the Method of Standard Additions bb/iCJ/17`J`J lb: 5d vl-o]Ov JHrtHA1 I •,••_ ,,,, Order N 99-06-012 Colorado State Unversity Page 8 ANALYTICA, I,NC TEST METHODOLOGIES METHOD: 7471 HG_CTS: MERCURY, Total (CVAA) 3050_1: .Acid Digestion of Sediments, Sludges, and Soils METHOD: 3050A. for ICP Metals METHOD: 6010E ICP_TS: METALS, Total (ICP) METHOD: Mod 9056 300F S: FLUORIDE (IC) 300N2S: NITRITE (IC) Reported as Nitrogen METHOD: Mod 9056 300N 5: NITRATE (IC) Reported as Nitrogen METHOD: Mod 9056 METHOD: Mod 9056 3005 S: SULFATE (IC) METHOD: 9010 CN_TS: CYANIDE, Total bb/-.LJ/lTdJ Lu:bd 4l-aOo4 i'4mi-4o1 rmuc up Order # 99-06-012 Colorado State IInveraity Page 9 ANALTTICA��NC. DATES REPORT Sample: 01A BOTTOM ASH Matrix: ASH Analysis Method Collected Received TCLP date Extracted Analyzed 05/21/99 05/28/99 NA 06/03/99 06/04/99 Chloride in TotalSoil by IC SW 9010M Cyanide, SW 9010 05/21/99 05/28/99 NA 06/01/99 06/0]/99 Flu05/21/99 05/28/99 NA 06/03/99 06/04/99 ICP Mete in Soil by IC SW 600M 05/28/99 Metals. total Sw 6011 NA 06/09/99 06/10/99 08 05/21/99 06/09/99 06/09/99 7471 05/21/99 05/28/99 NA Nitrate, Total 06/03/99 06/09/99 Nitrate as N in Soil by IC SW 9056M 05/21/99 05/28/99 NA 06/03/99 06/04/99 Nitrite as N in Soil by IC SW 9056M 05/21/99 05/28/99 NA 06/03/99 06/09/99 Sulfate in Soil by IC SW 9056M 05/21/99 05/28/99 N.4 Sample: 02A CLASS P SILO ASH Matrix: ASH Analysis Method Collected Received TCLP date Extracted Analyzed i05/21/99 05/28/99 NA 06/03/99 06/09/99 ChlorideTotal Soil. by IC SW 9056M Cyanide. Toca1 SW 9010 05/21/99 05/28/99 NA 06/02/99 06/01/99 05/21/99 05/28/99 NA 06/03/99 06/04/99 I Mete Tota by IC SW 6010M 06/09/99 06/10/99 ICP Metals. Total SW 60108 05/21/99 05/28/99 NA Mercury. Total 1471 05/21/99 05/28/99 NA 06/09/99 06/09/99 Nitrate as N in Soil by IC SW 9056H 05/21/99 05/28/99 NA 06/01/99 06/04/99 05/21/99 05/28/99 NA 06/03/99 06/04/99 _. Nitrite in N in Soil by IC SW 9056M NA 06/03/99 06/09/99 Sulfate in Soil by IC SW 9056M 05/21/99 DS/28/99 Sample: 03A CHEROKEE SILO ASH Matrix: ASH Analvele Method Collected Received TCLP date Extracted Analyzed W 05/21/99 05/29/99 NA 06/03/99 06/04/99 Cyanide. in Soil by IC 5 9016M 06/02/99 06/07/99 Cyanide. Total SW 9010 05/21/99 05/28/99 NA 06/03/99 06/04/99 Fluoride in Soil by IC SW 905fiM 05/21/99 05/28/99 NA 06/09/99 06/10/99 ICP Metals, Total SW 60109 05/21/99 05/28/99 NA Mercury. Total 7471 05/21/99 05/28/99 NA 06/09/99 06/09/99 NA 06/03/99 06/04/99 Nitrate as N in 6011 by IC SW 9056!1 05/21/99 05/28/99 NA 06/03/99 06/09/99 Nitrite as N in Soil by IC SW 9056M 05/21/99 05/28/99 Sulfate in Soil by IC SW 9056M 05/21/99 D5/28/99 NA 06/03/99 06/09/99 Sample: 04A CHEROKEE 4 ASH Matrix: ASH Analysis method Collected Received TCLF date Extracted Analyzed 05/21/99 05/20/99 NA 06/03/99 06/09/99 Chloride in Soil by IC SW 9016H 06/02/99 06/01/99 Cyanide. Total Sw 9010 05/21/99 05/28/99 NA 05/21/99 05/28/99 NA 06/03/99 06/04/99 Fluoride in Soil by IC SW 6010M 06/09/99 06/10/99 ICP metals. Total Sw 60108 05/21/99 05/28/99 NA 06/09/99 ]971 05/21/99 05/28/99 NA 06/09/99 Nitrate. Total 06/03/99 06/09/99 05/21/99 05/28/99 NA Nitrate as N in Soil by IC SW 9056M 06/03/99 06/04/99 05/21/99 05/28/99 NA Nitrite an N in Soil by IC SW 9056M 06/03/99 06/09/99 Sulfate In Soil by IC SW 9056M 05/21/99 05/28/99 NA 06/223/1999 10:bU 491—bbD4 oMrc,ws ,„,_ " OA/ac REPORT e: 1 ntTHOD BLANK SUFBIARY PAGE: + 9906012 06/17/99 CLIENT' 2ECH_LI NK QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE iREC FLAG LOW UPPE0. NB TS CYANIDE. Total mg/s9 06/07/99 ND 0.25 06/04/99 ND 0.2 M0 CHLORIDE by IC, Solids mg/Kg p 1.0 MB CHLORIDE by IC, Solids mg/Kg 06/09/99 N NITRATE as N by IC, Solids mg/Kg 06/04/99 ND 0.10 ms 06/04/99 ND 0.10 NB NITRITE as N by IC, soilde ms/Kg 06/04/99 Na 0.10 MB FLUORIDE by IC, Solids mg/K9 ND 2.5 MB SULFATE by IC. Solids mg/Kg 06/09/99 MB-9900582 ICP Metals, Total mg/Kg 06/10/99 ND 5.0 Aluminum ND 10 Antimony ND 10 Arsenic ND 1.0 Barium ND 0,20 Beryllium ND 5.0 Boron ND 0.50 Cadmium ND 10 Calcium ND 2.0 Chromium ND 3.0 Cobalt ND 0.50 Copper ND 5.0 Iron ND 5.0 Lead ND 5.0 Lithium ND 10 Magnesium ND 1.0 Manganese ND 2,0 Molybdenum ND 4 0 Nickel ND 100 Potassium 10 ND Selenium ND 50 Silicon ND 0.50 Silver ND 300 sodium ND 5.0 Strontium ND 40 Thallium ND 5.0 Tin ND 5.0 Titanium ND 1.0 Vanadium ND 0.50 zinc , MB MERCURY, Total mg/Kg 06/09/99 ND 0.10 06/23/1999 10:50 491-8554 bAKAbi r,-83c ii. _ QA/QC REPORT METHOD BLANK SPIKE SUMMARY PAGE: 2 CLIENT: TECM_LINK 06/17/99 ORDERM: 9906012 QC SPECS SAMPLE ID ANALYSE UNITS ANAL DATE RESULT LIMIT SPIKE REF VAL %REC FLAG LOW UPPER MBS_TS CYANIDE, Total mg/Kg 06/07/99 5.0 0.250 5.0 ND 100 80 120 06/04/99 24 0.2 25 ND 96.0 80 120 MBS CHLORIDE by IC. Solids mg/Kg ND 96.0 e0 120 M05 CMLORIDB by IC, Solids mg/Kg 06/09/99 24 1.0 25 Mg$ NITRATE am N by IC. Solids mg/Kg 06/04/99 13 0.10 13 ND 300 80 120 MBS NITRITE as N by IC, So ilds mg/K9 06/04/99 11 0.50 12.5 ND 88.0 80 120 MSS SULFATE by IC. Solids mg/Kg 06/09/99 180 2.5 190 ND 94.7 30 120 MSS FLUORIDE by IC. Solids mg/Kg 06/04/99 12 0.10 12.5 ND 96.0 80 120 MBS-9900582 ICP Metals, Total mg/Kg 06/10/99 190 5.0 200 ND 95.0 e0 120 Aluminum 98 10 50 ND 96.0 80 120 Antimony Arsenic 200 10 200 ND 100 e0 120 Barium 200 1.0 200 ND 100 Bo 120 Beryllium 5.2 0.20 5.0 ND 104 80 120 41 5.0 50 ND 82.0 Bo 120 Boron 5.1 0.50 5.0 ND 102 BO 120 Cadmium Calcium 930 10 1000 ND 93.0 80 120 Chromium 20 2.0 20 ND 100 80 120 49 3.0 50 ND 96.0 80 120 Cobalt _. Copper 25 0.50 25 ND 100 80 1x0 I 99 5.0 100 ND 99.0 90 120 eaD Ledd 49 5.0 50 ND 98.0 BO 120 Lithium 47 5.0 50 ND 94.0 B0 120 Magnesium 940 10 1000 ND 94.0 80 120 Manganese 50 1.0 50 ND 100 80 120 50 2.0 50 ND 100 80 120 Nickkelenum Molybdenum 50 4.0 50 ND 100 90 120 el Potassium 920 100 1000 ND 92.0 80 120 Selenium 190 10 200 ND 95.0 80 120 Silicon 490 50 500 ND 98.0 BO 120 Sodium 5.1 0.50 5.0 ND 102 Bo 120 Sodium 910 300 1000 ND 91.0 80 120 Strontium nCium 49 5.0 50 ND 98.0 60 120 Thallium 45 40 50 ND 90.0 80 120 46 5.0 SO ND 92.0 80 120 Tin Titanium 50 5.0 50 ND 100 80 120 Vanadium 50 1.0 50 ND 100 80 120 Zinc 49 0.50 SO ND 96.0 80 120 Ck3MB5 MERCURY. Total mg/Kg 06/09/99 0.46 0.10 0.50 ND 96.0 80 120 Ub/.Ltl/1777 id: 7b 471-0004 JHMH01 rHUt. 14 QA/QC REPORT - MATRIX SPIKE SUMMARY PACE: 3 CLIENT: TECR_LINK 06/11/99 ORDEAB+ 9906012 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE REF VAL %REC FLAG LOW UPPER S906012.04A CYANIDE, Total mg/K9 06/07/99 4.8 0.250 5.0 ND 96.0 70 135 5906012-alA CHLORIDE by IC. Solids mg/K9 06/04/99 81 0.2 25 56 100 70 130 06/09/99 10 0.40 10 1.4 86.0 70 130 Q5DSlJ9-03A CHLORIDE by IC. Solids mg/Kg 7p 130 5906012-01A NITRATE ae N by IC. Solids mg/Kg 06/04/99 16 0.10 13 2.4 105 5906012-01A NITRITE as N by IC. Soilds mg/Kg 06/04/99 11 0.10 12.5 ND 88.0 70 130 $906012-04A SULFATE by IC. Solids mg/Kg 06/09/99 4100 25 1900 2200 100 70 130 5906012.01A FLUORIDE by IC. Solids mg/Kg 06/04/99 14 0.50 14 1.3 90.7 70 130 6906012-01A ICP Metals. Total nl9/Kg 06/10/99 Aluminum 13000 5.0 200 11000 1000 ' 70 130 Antimony 30 10 50 ND 60.0 ` 70 130 Arsenic 160 10 200 ND 80.0 70 130 Barium 570 1.0 200 340 115 70 130 Beryllium 5.1 0.20 5.0 0.50 92.0 70 130 Boron 180 5.0 50 120 120 70 130 Cadmium 4.5 0.50 5.0 ND 90.0 10 130 Calcium 10000 •10 1000 8500 150 • 10 130 Chromium 19 2.0 20 ND 95.0 10 130 Cobalt 42 3.0 50 ND 84.0 70 130 _. Copper 29 0.50 25 6.1 91.6 70 130 Iron 6400 5.0 100 5300 1100 70 130 Lead 44 5.0 50 ND 88.0 70 130 Lithium 49 5.0 50 6.2 85.6 70 130 Magnesium 3400 10 1000 2100 130 70 130 Manganese 70 1.0 50 24 92.0 70 130 Molybdenum 42 2.0 50 ND 84.0 70 130 Nickel 42 4.0 50 ND 84.0 70 130 Potassium 1300 100 1000 300 100 70 130 Selenium 110 10 200 ND 85.0 70 130 Silicon 1100 50 500 590 102 70 130 Silver 5.0 0.50 5.0 ND 100 70 120 Sodium 2300 300 1000 1100 120 70 130 Strontium 510 5.0 50 490 160 • 70 130 Thallium 50 40 50 ND 100 70 120 Tin 46 5.0 50 ND 92.0 70 130 Titanium 390 5.0 50 300 180 70 130 Vanadium 52 1.0 50 6.8 90.4 70 130 Zinc 49 0.50 50 7.5 83.0 70 130 5906012-01A MERCURY. Total mg/Kg 06/09/99 0.57 0.10 0.5000 ND 114 70 130 Ub/LJ/IDDD lo. Jo 4J1-OJJY ^"^"' ' " OA/QC REPORT SAMPLE DUPLICATE SUMMARY PAGE: 4 CLIENT: TECH_LINK 06/11/99 ORDERY: 9906012 QC SPECS UNITS ANAL DATE RESULT LIMIT REF VAL %RAD FLAG UPPER SAMPLE ID ANALYTE 56 1.]l JS 0906012.O1A CHLORIDE by IC. Solids mg/Kg 06/04/99 57 0.2 06/09/99 1.2 0.40 1.4 15.4 35 OD05139.O3A CHLORIDE by IC. Solids �/K9 2.4 0.10 2.4 0. 0 35 0906012-01A NITRATE as N by IC. Solids mg/Kg 06/04/99 ND N0 35 0906012-01A NITRITE as N by IC, Solids mg/Kg 06/04/99 ND 0.10 06/04/99 1.3 0.10 1.3 0.0 35 0906012-01A FLUORIDE by IC, Solids mg/K9 2200 0.0 15 0906012-04A SULFATE by IC. Solids mg/K9 06/09/99 2200 25 0906012-01A ICP Metals, Total mg/Kg 06/10/99 Aluminum 7800 5.0 11000 34.0 35 35 ND 10 ND NC Antimony ND NC 35 Arsenic ND 10 270 1.0 340 23.0 35 Barium 35 Beryllium 0.37 0.20 0.50 NC 110 5.0 120 8.70 35 Boron 35 Cadmium ND 0.50 ND NC 6900 10 8500 20.8 35 Calcium 35 ND 2.0 ND NC Chromium Cobalt ND 3.0 ND NC 35 - , n.ca 6.1 35.9 15 AANALYTICA 325 Interbcken Parkway.Suite 2O0 c ENVIRONMENTAL Broomfield. Colorado 80021 n LABORATORIES (303)469-8868 or 1-BO -873-8707 CHAIN OF CUSTOM) RECORD FAX:(303)469-5254 i. CUENT NAME r CLIENT CONTACT ANALYTICA c USE ONLY IC HL WI( I / '--- 11/1'--- 11/11f'--- 11/11f\ lgsQ CLIENT ADDRESS PROJECT ID/DESCRIPTION - T c c Iois-n J Pt Fr ifrti Vd 4-4z0 -rvi AiS}j CSN O ✓3772 4 TELEPHONE gio 41I _ gr)-)Y 7'7� ' t L0N / / 0c g/ Z--- c FAX ¶7O 41)I f ' Pl%Y 4 P.O.NO. TESTS REQUESTED / c LOC, L._ n� . l/� 4 Sample Matrix (circle one) WATER SOIL OIL SLUDGE .1‘'34 ;r ..Oc3 OTHER(specify) BOTOF TLES iPM / (NOTE: use one Chain of Custody per matrix) //J/fJj� O DATE TIME CLIENT ID DUE w/o ?7 A f" 21'ry In(A-S4 )" SJco it45{1 ( - - - . . S-11-`, CHf2otF6 ci O.2 Ar4 ( J S-7 1'S5 C flt(L.!CEc 4 - _ [ 4 COMMENTS MEANS OF DELIVERY - i RE ISH J$D BY DATE/TIME RECEIVED B ATE/ IME RELINQUISHED BY DATE/TIME RECEIVED BY DATE/TIME f s-'II- s9 - )/717 F rs Si da i CO3 0294 ATTACHMENT E 0 " \NTh\--,,,,,,_ -______ X) ° o ---------------------i' -HN:7)- %-- 5----/C-ii 09061I n: , j -- % 19 C-7 Cr----11.enne : I \)s:2;5- . e 0,54 \/ Og50 a gad•° 172 . O:)B • 9): ' 4890 0950 • O ' .� _ _` it • 9 a\ �� II �I _ .\ e� n I II ` I ,Y x? / ��J II II-. 9 n n II' n I I 4. O y tI / i:ci I , }8 0 Ditch \'' G0 a cy 29 )a\ 7 II 90 /9— ..-.. i 75 _, - 45 . / q°° III 14 i r �B°° TyU Y ' ' SITE _ I 7 �'I• LOCATION \- - - - -fi:II / " 4,..,(Hi: _ii -r 4 99 ry W�Bn21fr °I VIS ;}'� SC Vrain SchJ� a � � 31 � As.> oB09 �EQ/OuaBBM • �a0 SJ4813 ICHA CEio0� •�—� aB5a po47/ ç i1 n E Z ----- 6 c, , i c K -1-) _.f\----4 I Tr FIGURE 1 I GOWANDA QUADRANGLE VARRA COMPANIES COLORADO-WELD Co SITE LOCATION MAP -COAL ASH STUDY AREA I 7.5 SERIES PROJECT NO. PREPA ED BY CGRS RSLA 1-135-2755 J COLORADO GROUNDWATER n winn DATE 07/02/98 REVIE D BY RESOURCE SERVICES • ....-..-...---..._.. 1 4906 � . -- —* ''''''i ,:.7 .I \ : ...,. .850 ., ) _. • ,,.......„. ; :r, _ 1 e.• ---N. \ . ''\?. .. - //.?p A90 \1 Si p v4:78 +478 *930 . •• • 4894 — —il � — — — —_ _— _.�� U r sue. • /� • _ , : rJ A_.1__•�-/ / tom" p Qito • f, is a'.0,...,5 1 ,___ . _ . y---. . i\---.:. ----/ )" .. 67 29 A,^` p p1. ) \‘• 4 f ; r-5 .• f• / Q. p,},Q� , 4897 'I• .' \ '8828 -�. - 0799 CI 4810NA. ._.. �1 • / p85 _ 1� :i�/1w �'1.. L, / `� t Vrain Sch• +'ry 4/ s )L-/-36 '3 _ a , 480 P V 32 0Q- a 1` 1 Lp51 I :1 1 4 4809.C. ....,. i 0 I: e .C TI O . I, R � •1482a • 4813 s 48/3 • ��...`` CHANCE . _ -.. ;17:-.-21 ii �'� •`--- V 4, __mil. ,,.,. ..,...,, . ---.,i 4• ,. .,,_ _0 c ' i 0. ..T.In-ifj)1.---. .''. • 1 .��J ,rte." . .. U •--_.�•f :� e r. aC • FIGURE 2 GOWANDA QUADRANGLE A REGISTERED WELL LOCATIONS COLORADO-WELD CO. VARRA COMPANIES 7.5 SERIES PROJECT NO. PREPARED BY CG RS 1-135-2755 JLA COLORADO GROUNDWATER DATE 07/02/98 REVIEWED BY RESOURCE SERVICES 0 2000 I -.^ _/2531.23' 1 , --- _.__._ •y_.---_.ter ---•-. . r `� Z z _ __ ----____ . . �_, .. .. ..._ , i , , \ tJ O \ \ L ••� \. .........-- .. , . __ __J 0 . 0 -- . .,..,.„.._„.._______,.____=. -, a:R n �.L-�- - _____ ,________.„.‘ ......_ „:„...,, , .________ _ r3.0„.... ____,..._.„, , ,, ...„. . ...„ ........_..... . ,„ . ,----„,.... xC „,. \ .\` STUDY AREA 13J 1.1 1 11 �'•� killvl yt:lti ti _ l 1 1 �. `}I�t� X479 J/ LOU/J✓f P/LINC"3 ✓K.�lC AI.!'/LR ...to co.irc.NJs' /V/4i.-ir4.w•o _ X 4762 {1 \ CAcn NWY 66 7. \-1k I ; / c i f i"'r e' • Nan/ y. 1;:! 6 l�, } _ X4787.4 r ,` "r` ' ,� � s1 \.16 .: z:. 0 id. .` 3;. ' .,� 'y1`r.�r" ,�.rr�-. ' •r:Yf • -.L.,.' _ wr<o ca Rte Av're I � , 1 r_-..- .,if.�r • r •t 1 .mil •l,t '.` 'F acid« / N/NE DH AND MONITORING { "' ='O E�•.` ~J� �N J 1 :� / Mw.. {� J r CATION PLAN 1 ..,.. q,•a+reR e m A. co w. 'f"r.. ! rt»-/7Te O%�rrray.ce.vsa i 1910% .«. w• Sxkrop.Z.TN.omit;r•. .tppor: w' C 1 JYw r,O,eaeoeea�l t., 1 _ AQ y._ ,� .:., .'T, •'`�,'1 ..,-. j �y!JPi.e.txi!7lIL�,. Tt h 5, p�� / v i / i \IA ,,: - T Y f /'I7. NA6 . - _.. ,f'4 4t 'V�s.N,;t'oEd..., 4 • '-tneis 6 #.,,r' t.: r .... ;: • fir v/ .. ".�.:{-•�,,,,• :•�c:`:_ , `[Tr t,,:.: :'l ten. - h -�— to tcwcncn.v� wren cDc vrr�ial.r� , filf�/4 •w'sewrvP.1 pew'7./wfc '- ,ti ,.., ([�''''�.. I. /-f_- -',....• `': ..,. :.;y• 01. 111:1 i n \ s� .., �P \,40,0.4.A...ft.. America c 0 4 ,....._ • A kf. i y1' a4 w. ... •'emu'Zsx 60_ yy+er ':•:. _ i, t EXHIBIT B ji:fr. toss .._ t ...v a4 INDEX MAP _J.s.,..--,,,,,---.„, 11 i. ......../...-.- 0.,,..,,,,,.......9(.7.,_ \-',.., !,'.. ..„,,. .:-. ,.,w,- -i it, ._...w j. Mry Leo. /se/ /per -- .. � FIGURE 3 I f.:',•,--•••,, -. • • ;;",;, f/; •f c. • AREA USE AND SITE CONDITION Mid _�• ,, -- ra *�;;"n1 ! -----.7-n--•-:;---*-" . r � :M VARRA COAL ASH PROJECT 'I • 'i.. 'p,.ma-0,,ss:/sl+ •I•��' •- • ' ::--' •-.'-'-',"-:''''' f WELD COUNTY, COLORADO I • i YA rr J' 1 LR ti 19 I„ �T". x I r� 3 31 a[�,i •k.;Cr.' * �1 721 St a.. n"4°tart. 751 'r^'.G 1 ^4'i r -. �„ toil, Wo HFx f 4J Ob �l n� I� K.r,R.r�y+.� L '2 ,P�r .f�.l GTirt'"r �I 36131 ' � N•w. Jr/ ... -'.! 'F5r it _S,----z-.\ ea. 'f l c�. �xnu,.1 a ' S gyS'a` ;•q3� r,' r•ys:�rt .—, 'Ft_ 7 , r '..3.�, _ A --'\ r � ° i.at Y'+B'fifit�• s / T Tr�, U .� c ,v, Iv 9r,.�. i c�.✓4.1I Y Y la r I G.h.. in 1W,9•" w. �? cs Gb' ti I 1„�`, 5 r _ a�,,._ A i f)) 1 i Mr, ` "ate f, 7":"7.17 Ir �- __� / 't f1r. ) S EXPLANATION ` r FI`0 � .!� ( II �gy 6 ' AREA OF SHALLOW WATER TABLE IN c " IC)• ,.)Wi 1 , `'-� � t I I r m �� ALLUVIUM OR WEATHERED 111.1> 1 v 3 ;2 :,,,,,,,,Q1"1";tit I wp,.F ROCK Limes nl aru iv dashed when .5P/CF ) y I )0 ei*Ne , EE/47/34 /”I (� w approximately I,,.alcl L f. i /.. ig} 13&e a`,. t o ne • rig .P ) _ t ��'t 2' �:'1r4i3•x A)/tW 6�+` \ AREA OF DISCONTINUOUS SATURATION I ARIA OF SEASONAL SATURATION ! `I 0 5 a e w �� 11 yr� � `�� 164i, 1.WL. —4800 WATER-TABLE writer CONTOUR—Shows all" 9 R 1 T� { , b .1#1.711 .5V/7"/"� m0e of w9ter(able Dashed where I.Itfl 911 n 'rN c I l rl I ' � � 1 0fee.approximately located.(Mod Contour interval In1111�alli Wi ;: / a IP. pr �Y \, IO fee..Notional(Modena:Vertical { 1`� (�f� 0��1 11y] Datum of 1929 Illrlli11�. HIIIILI %® s^,..ii� Y � \ 'L�J�1111 IRINI 9) ,6, 4,„; t_ .)19 -{1 96 / .�� ac. ,,t.., i,,,,,y a • )) WELL—Depth measured byU.S. 111 51imPa 4�' " -it-- ��ss C . , �.ID1inumb r pi I S r F 1 Unmg hird° .1"112 I l H— �® V � lii CDolumo I li we v water,on fI3 s ,' i— l __ `. ,d�_ —9i's. /� t \ . � Irw f 1929 L he mnln Viiini v ' n29.L wernI be. r•c IMIli ally ? .t iro ' tJ 1 law c. �' �• it �'_ EO t� t" ,�' �� , W EST HOLESURVEY DRILLED FOR U.S.LEO. ,irg tra A® �, y-kv toaye. \ .: �IY At r SECTION WHERE OROUNUWATI:R rflow 2f�!�//< ' \ ��.�'� ,'� � 1 gyp.y `� �q_ D'fl acto owaw WAS of COMPUTED-Num- ber nu u ��a iiiiWes„ l ift► i_ \" !� �fJ 1�r {IF�A'LINE OF SECTION tp . IN . t.rish'.-, � • �—rl .,., �� nItURJJ!#u00 e999 �Y �, / �.� ��wpm-haws I�� ,II • (90° i I AWI?, I' ,�riir► a�,i 3 1 ®, I FIGURE 6 lv�r "it- I 'Y ASH PROJECT '2. L _ ` _ SHALLOW GROURWATER CONTOUR MAP•VARRA COALT Tr� l I_ d q _ ,• • ) WELD COUNTY.COLORADO �m.��ra�a,�, 9�' `�/� b v PRQ EC NO. PREPARED BY ylrk��1► �ail O'Il8 _ F ci - 2755AA u CGRS et ?/W%■ ! \imp I I r/ t>I^• I SCALE REVIEWED BY COLORADO GROUNDWATER �y� 7 / RESOURCE SERVICES 4016- 1:417,,,..9 ."� 1a'— G z �_ :N . \ 4 ]1":i o / / I 1:100 000 ATTACHMENT F NESTED WELL SET NE dW TRENCH DEPTH ESTIMATED AT 10'BGS ___./ _ - ///: _i_ /// \\\ /// \\\ /// \\\ /// \\\ /// \\\ /// \\\ 1 (PIERRE SHALE) A 100' NOT TO SCALE LEGEND 7 NATIVE SOIL FIGURE 2 F:_:_-__I FLY ASH MONITORING WELL PLACEMENT WATER TABLE SURFACE VARRA COAL ASH PROJECT WELD COUNTY, COLORADO MONITORING WELL IS SCREENED PROJECT NO. PREPARED BY (DASHED AREA REPRESENTS SCREENED INTERVAL) 2755588 RACAD C G R DATE REVIEWED BY COLORADO GROUNDWATER 6/19/DORESOURCE SERVICES TYPICAL MONITORING WELL r VENTED CAP LOCI0NG STEEL CASING - (4'DIAMETER) Wt. :r+ r:Y: .vig 59:5 is rrrrrr •curt Th 7 ID SCN 40 PVC RISER `rrr4� GROUT i:i:r.{t M. (11115 #1010 SILICON SAND -_- , it-_ i 7 ID SCH 40 PVC -_- FACTORY SLOTTED SCREEN :i---, (0.1 SLOT) - --' /// \\\ /�/ \\\ / / \\\ /// \\\ / / \\\ /�/ \\\ -S-1µ•- FIGURE 3 MONITORING WELL CONSTRUCTION DETAILS VARRA COAL ASH PROJECT WELD COUNTY, COLORADO PROJECT NO PREPARED BY 2755aa RACAD CGRS- DATE //� REVIEWED BY COLORADO GROUNDWATER 619 00 RESOURCE SERVICES ATTACHMENT G USGS • science for a changing world Radioactive Elements in Coal and Fly Ash: Abundance, Forms, and Environmental Significance U.S.Geological Survey Fact Sheet FS-163-97 October, 1997 Introduction Coal is largely composed of organic matter,but it is o 7e° }1, Western United States the inorganic matter in coal—minerals and trace ele- aso ments—that have been cited as possible causes of health, m { 040 environmental, and technological problems associated o r= with the use of coal. Some trace elements in coal are o 420 400; naturally radioactive. These radioactive elements include m 300 _ uranium U , thorium and their numerous decay) (Th)> 180 products, including radium (Ra) and radon (Rn). Al- though these elements are less chemically toxic than othersl so "coal constituents such as arsenic,selenium,or mercury, (1,2)(2'3)(3,4)(45(5,6)) (fi])(8)(891(810)01(11,1) )114(13(14.15)>15 questions have been raised concerning possible risk from URANIUM CONCENTRATION IN WHOLE COAL(ppm) radiation. In order to accurately address these questions and to predict the mobility of radioactive elements dur- 120 ing the coal fuel-cycle,it is important to determine the c tw concentration,distribution,and form of radioactive ele- a Illinois Basin ments in coal and fly ash. m ao — - - Abundance of Radioactive Elements in o so — LL Coal and Fly Ash ° 40 Assessment of the radiation exposure from coal burn- 2 20 ing is critically dependent on the concentration of radio- Z '` nnrin r3 r1 - >1 active elements in coal and in the fly ash that remains ° 51 (2,3) (d$) (6,1) (6,9) (10,11)T(12,13) >15 after combustion. Data for uranium and thorium content (1,2) (3,4) (5.6) (7,6) (9.10) (11,12) (13,15) in coal is available from the U.S. Geological Survey URANIUM CONCENTRATION IN WHOLE COAL(ppm) (USGS),which maintains the largest database of infor- Figure 1. Distribution of uranium concentration in coal from two mation on the chemical composition of U.S. coal. This areas of the United States. database is searchable on the World Wide Web at: http://energy.er.usgs.gov/products/databases/ phase and solid combustion products. The partitioning CoalQual/intro.htm. Figure I displays the frequency between gas and solid is controlled by the volatility and distribution of uranium concentration for approximately chemistry of the individual elements. Virtually 100 per- 2,000 coal samples from the Western United States and cent of the radon gas present in feed coal is transferred approximately 300 coals from the Illinois Basin. In the to the gas phase and is lost in stack emissions. In con- majority of samples, concentrations of uranium fall in trast, less volatile elements such as thorium, uranium, the range from slightly below 1 to 4 parts per million and the majority of their decay products are almost en- (ppm). Similar uranium concentrations are found in a van- tirely retained in the solid combustion wastes. Modern ety of common rocks and soils, as indicated in figure 2. power plants can recover greater than 99.5 percent of the Coals with more than 20 ppm uranium are tare in the United solid combustion wastes. The average ash yield of coal States. Thorium concentrations in coal fall within a similar burned in the United States is approximately 10 weight 1-4 ppm range,compared to an average crustal abundance percent. Therefore, the concentration of most radioac- of approximately 10 ppm. Coals with more than 20 ppm tive elements in solid combustion wastes will be approxi- thorium are extremely rare. mately 10 times the concentration in the original coal. During coal combustion most of the uranium, tho- Figure 2 illustrates that the uranium concentration of most rium, and their decay products are released from the fly ash(10 to 30 ppm)is still in the range found in some original coal matrix and are distributed between the gas granitic rocks,phosphate rocks,and shales. For example, sion-track radiography, a sophisticated technique for observing the distribution of uranium in particles as • f — Basaltic rock small as 0.001 centimeter in diameter. Figure 3 in- - — —u.s.coals eludes a photograph of a hollow glassy sphere of fly ash and its corresponding fission track image. The -Common shales diameter of this relatively large glassy sphere is ap- - _`_ —Granite rock proximately 0.01 cm. The distribution and concen- tration of uranium are indicated by fission tracks, —Asa —Fly ash s$70x U.S.coals which appear as dark linear features in the radiograph. — — — —Blackshales Additional images produced by USGS researchers — _!,_ - phosphate rock from a variety of fly ash particles confirm the prefer- ential location of uranium within the glassy compo- se 1.0 1e 100 1000 Went of fly ash particles. URANIUM CONCENTRATION(ppm) Health and Environmental Impact of Radioactive Elements Associated With Figure 2. Typical range of uranium concentration in coal,fly ash, Coal Utilization and a variety of common rocks. Radioactive elements from coal and fly ash may come in contact with the general public when they are dispersed the Chattanooga Shale that occurs in a large portion of m air and water or are included in commercial products that the Southeastern United States contains between 10 and 85 ppm U. contain fly ash The radiation hazard from airborne emissions of coal- Forms of Occurrence of Radioactive fired power plants was evaluated in a series of studies Elements in Coal and Fly Ash conducted from 1975-1985. These studies concluded that the maximum radiation dose to an individual living The USGS has a current research project to investi- within 1 km of a modern power plant is equivalent to a gate the distribution and modes of occurrence(chemical minor,perhaps 1 to 5 percent,increase above the radia- form) of trace elements in coal and coal combustion tion from the natural environment. For the average citi- products. The approach typically involves (1) ultra zen,the radiation dose from coal burning is considerably sensitive chemical or radiometric analyses of particles less. Components of the radiation environment that im- separated on the basis of size,density,mineral or mag- pact the U.S.population are illustrated in figure 4. Natural netic properties,(2)analysis of chemical extracts that sources account for the majority (82 percent) of radia- selectively attack certain components of coal or fly tion. Man-made sources of radiation are dominated by ash,(3)direct observation and microbeam analysis of medical X-rays (11 percent). On this plot, the average very small areas or grains, and (4)radiographic tech- population dose attributed to coal burning is included niques that identify the location and abundance of ra- under the consumer products category and is much less dioactive elements. than 1 percent of the total dose. Most thorium in coal is contained in common phos- Fly ash is commonly used as an additive to con- phate minerals such as monazite or apatite. In con- crete building products,but the radioactivity of typi- trast,uranium is found in both the mineral and organic cal fly ash is not significantly different from that of fractions of coal. Some uranium may be added slowly more conventional concrete additives or other build- over geologic time because organic matter can extract ing materials such as granite or red brick. One ex- dissolved uranium from ground water. In fly ash,the treme calculation that assumed high proportions of uranium is more concentrated in the finer sized par- fly-ash-rich concrete in a residence suggested a dose en- ticks. If during coal combustion some uranium is con- hancement, compared to normal concrete, of 3 percent centrated on ash surfaces as a condensate, then this of the natural environmental radiation. surface-bound uranium is potentially more susceptible Another consideration is that low-density, fly-ash- to leaching. However, no obvious evidence of sur- rich concrete products may be a source of radon gas. face enrichment of uranium has been found in the hun- Direct measurement of this contribution to indoor radon dreds of fly ash particles examined by USGS is complicated by the much largercontributionfromun- researchers. derlying soil and rock (see fig. 4). The emanation of The above observation is based on the use of fis- radon gas from fly ash is less than from natural soil of • Figure 3. Photograph(left) of a hollow glassy fly ash particle(0.01 cm diameter)and Its fission track radiograph(right). Uranium distribution and concentration are indicated by the location and density of dark linear fission tracks in the radiograph. similar uranium content. Present calculations indicate that concrete building products of all types contribute less than 10 percent of the total indoor radon. Approximately three-fourths of the annual produc- (f ` TENAi Lion of fly ash is destined for disposal in engineered sur- ji} 1% Zy face impoundments and landfills,or in abandoned mines t 8% v e r4 EDICAL' and quarries. The primary environmental concern asso- cOSMlc a t X To dated with these disposal sites is the potential for ground- 17: ar � ' 1 � Ned,o0am water contamination. Standardized tests of the } vt et* 14#3s w�1s= leachability of toxic trace elements such as arsenic, sele- % � ` OTHER<1% nium,lead,and mercury from fly ash show that the amounts dissolved are sufficiently low to justify regulatory classifi- cation of fly ash as nonhazardous solid waste. Maximum MOON - allowable concentrations under these standardized tests are 55js ,, 100 times drinking water standards,but these concentration limits are rarely approached in leachates of fly ash. The leachability of radioactive elements from fly ash has relevance in view of the U.S.Environmental Protection Agency(USEPA)drinking water standard for dissolved Figure 4. Percentage contribution of various radiation sources radium(5 picocuries per liter)and the proposed addition to the total average radiation dose to the U.S.population. of drinking water standards for uranium and radon by the year 200U:Previous studies of radioelement mobil- Summary ity in the enviroment,and in particular,in the vicinity of uranium mines and mills,provide a basis for predicting Radioactive elements in coal and fly ash should not which chemical conditions are likely to influence leach- be sources of alarm. The vast majority of coal and the ability of uranium, barium (a chemical analog for ra- majority of fly ash are not significantly enriched in ra- dium), and thorium from fly ash. For example, dioactive elements, or in associated radioactivity, com- leachability of radioactive elements is critically influ- pared to common soils or rocks. This observation enced by the pH that results from reaction of water with provides a useful geologic perspective for addressing so- fly ash. Extremes of either acidity(pH<4)or alkalinity cietal concerns regarding possible radiation and radon (pH>8)can enhance solubility of radioactive elements. hazard. Acidic solutions attack a variety of mineral phases that The location and form of radioactive elements in fly are found in fly ash. However, neutralization of acid ash determine the availability of elements for leaching solutions by subsequent reaction with natural rock or soil during ash utilization or disposal. Existing measurements promotes precipitation or sorption of many dissolved el- of uranium distribution in fly ash particles indicate a ements including uranium,thorium, and many of their uniform distribution of uranium throughout the glassy decay products. Highly alkaline solutions promote dis- particles. The apparent absence of abundant, surface- solution of the glassy components of fly ash that are an bound,relatively available uranium suggests that the rote identified host of uranium;this can,in particular,increase of release of uranium is dominantly controlled by the uranium solubility as uranium-carbonate species. For- relatively slow dissolution of host ash particles. innately,most leachates of fly ash are rich in dissolved Previous studies of dissolved radioelements in the sulfate,and this minimizes the solubility of barium(and environment, and existing knowledge of the chemical radium),which form highly insoluble sulfates. properties of uranium and radium can be used to predict Direct measurements of dissolved uranium and ra- the most important chemical controls, such as pH, on dium in water that has contacted fly ash are limited to a solubility of uranium and radium when fly ash interacts small number of laboratory leaching studies, including with water. Limited measurements of dissolved ura- some by USGS researchers,and sparse data for natural nium and radium in water leachates of fly ash and in water near some ash disposal sites. These preliminary natural water from some ash disposal sites indicate results indicate that concentrations are typically below that dissolved concentrations of these radioactive ele- the current drinking water standard for radium (5 ments are below levels of human health concern. picocuries per liter)or the initially proposed drinking wa- ter standard for uranium of 20 parts per billion(ppb). Suggested Reading: Tadmore,J., 1986,Radioactivity from coal-fired power plants:A review: Journal of Environmental Radioactivity, v.4,p. 177-204. Cothem,C.R,and Smith,J.E.,Jr., 1987,Environmental Radon: New York,Plenum Press,363 p. Ionizing radiation exposure of the population of the United States, 1987: Bethesda, Md., National Council on Radiation Protection and Measurements,Report 93, 87 p. Swaine,D.J., 1990,Trace Elements in Coal: London,Butterworths,278 p. Swaine,D.J.,and Goodarzi,F.,1997,Environmental Aspects of Trace Elements in Coal: Dordrecht,Kluwer Academic Publishers,312 p. • __ oFr l _ it:°3:71:4,. CO'J, , iT ..z,., .,,,,, O GILPIS For more information please contact: Dr.Robert A.Zielinski,U.S.Geological Survey Dr.Robert B.Finkelman,U.S.Geological Survey Denver Federal Center,Mail Stop 973 National Center, Mail Stop 956 Denver,Colorado 80225 12201 Sunrise Valley Drive, Reston,VA 20192 (303)236-4719; e-mail:rzielinski@usgs.gov 703-648-6412;e-mail:rbf@usgs.gov U.S.Department of the Interior U.S.Geological Survey Fact Sheet FS-163-97 IICHEROKEE #1 CUkFLAB CORE LABORATORIES I LABORATORY TEST RESULTS Job Number: 975461 Date: 10/16/97 CUSTOMER: Commercial Testing 8 Engineering PROJECT: ATTN: Mark Thrasher Customer Sample ID: 72.365107 laboratory Sample ID: 975461-15 Date Sampled Date Received 08/25/97 Time Sampled Time Received : 19:40 Sample Matrix : Ash TEST.METHOD". PARAMETER/TEST DESCRIPTION SAMPLE RESULT REPORTING LIMIT UNITS DATE TECH EPA 908.1 U308, Solid 11.7 1.0 ug/g 10/14/97 plj IEPA 901.1 Bismuth 214, Error +/-, Solid 0.4 pCi/g 10/09/97 ddp EPA 901.1 Bismuth-214, Solid 4.1 pCi/g 10/09/97 ddp I EPA 900.0 Gross alpha, Solid 61.1 pCi/g 09/11/97 nrf EPA 900.0 Gross alpha, Error +/-, Solid 15.9 pCi/g 09/11/97 nrf IEPA 900.0 Gross alpha, LLD, Solid 13.2 pCi/g 09/11/97 nrf EPA 900.0 Gross beta, Solid 44.0 pCi/g 09/11/97 nrf I --°A 900.0 Gross beta, Error +/-, Solid 8.0 pCi/g 09/11/97 nrf .PA 900.0 Gross beta, LLD, Solid 9.8 pCi/g 09/11/97 nrf I EPA 901.1 Lead-210, Solid 6.2 pCi/g 10/09/97 ddp EPA 901.1 Lead-210, Error, Solid 1.6 pCi/g 10/09/97 ddp EPA 901.1 Lead-212, Solid 2.9 pCi/g 10/09/97 ddp IEPA 901.1 Lead-212, Error +/-, Solid 0.2 pCi/g 10/09/97 ddp EPA 901.1 Lead-214, Solid 4.5 pCi/g 10/09/97 ddp EPA 901.1 Lead-214, Error +/-, Solid 0.3 pCi/g 10/09/97 ddp EPA 901.1 Radium-226, Activity, Solid <3.0 pCi/g 10/09/97 ddp EPA 901.1 Thallium 208, Solid <1.2 pCi/g 10/09/97 ddp mod. HASL 300 Thorium-228, Solid 2.9 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-228, Error +/-, Solid 0.8 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-228, LLD, Solid 0.3 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-230, Solid 3.8 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-230, Error +/-, Solid 0.9 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-230, LLD, Solid 0.2 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-232, Solid 2.3 pCi/g 09/18/97 nrf HASL 300 Thorium-232, Error +/-, Solid 0.6 pCi/g 09/18/97 nrf Page 23 ll CHEROKEE #4 r COk1LAB CORE LABORATORIES Ill LABORATORY TEST RESULTS Job Number: 975461 Date: 10/16/97 CUSTOMER: Commercial Testing 8 Engineeringill, PROJECT: ATTN: Mark Thrasher Customer Sample ID: 72-365108 Laboratory Sample ID: 975461-16 Date Sampled - Date Received : 08/25/97 Time Sampled Time Received : 19:40 Sample Matrix Ash II! TEST METHOD ! PARAMETER/TEST DESCRIPTION SAMPLE RESULT REPORTING LIMIT UNITS DATE TECH EPA 908.1 U308, Solid 9.4 1.0 ug/g 10/14/97 plj li, EPA 901.1 Bismuth 214, Error +/-, Solid 0.4 pCi/g 10/09/97 ddp EPA 901.1 Bismuth-214, Solid 4.5 pLi/g 10/09/97 ddp ill, EPA 900.0 Gross alpha, Solid 72.0 pCi/g 09/11/97 nrf EPA 900.0 Gross alpha, Error +/-, Solid 17.3 pCi/g 09/11/97 nrf IEPA 900.0 Gross alpha, LLD, Solid 13.7 pCi/g 09/11/97 nrf EPA 900.0 Gross beta, Solid 28.1 pCi/g 09/11/97 nrf EPA 900.0 Gross beta, Error +/-, Solid 6.4 pCi/g 09/11/97 nrf al EPA 900.0 Gross beta, LLD, Solid 8.3 pCi/g 09/11/97 nrf EPA 901.1 Lead-210, Solid <9.6 pCi/g 10/09/97 ddp ii, EPA 901.1 Lead-212, Solid <2.9 pCi/g 10/09/97 ddp EPA 901.1 Lead-214, Solid 4.0 pCi/g 10/09/97 ddp EPA 901.1 Lead-214, Error +/-, Solid 0.3 pLi/g 10/09/97 ddp EPA 901.1 Radium-226, Activity, Solid <3.1 pCi/g 10/09/97 ddp EPA 901.1 Thallium 208, Solid <1.2 pCi/g 10/09/97 ddp mod. HASL 300 Thorium-228, Solid 2.0 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-228, Error +/-, Solid 0.6 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-228, LLD, Solid 0.2 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-230, Solid 2.8 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-230, Error +/-, Solid 0.7 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-230, LLD, Solid 0.2 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-232, Solid 1.8 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-232, Error +/-, Solid 0.5 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-232, LLD, Solid 0.2 pCi/g 09/18/97 nrf Page 25 ' CHEROKEE BOTTOM ASH cOk?PAB CORE LABORATORIES iI LABORATORY TEST RESULTS IJob Number: 975461 Date: 10/16/97 1 CUSTOMER: Commercial Testing $ Engineering PROJECT: ATTN: Mark Thrasher Customer Sample ID: 72-365109 Laboratory Sample ID: 975461-17 Date Sampled • Date Received : 08/25/97 Time Received : 19:40 Time Sampled Sample Matrix : Ash 'l TEST METHOD , PARAMETER/TEST DESCRIPTION SAMPLE RESULT REPORTING LIMIT UNITS DATE TECH EPA 908.1 U308, Solid 7.0 1.0 ug/g 10/14/97 plj III, EPA 901.1 Bismuth-214, Solid <1.0 pCi/g 10/09/97 ddp EPA 900.0 Gross alpha, Solid 27.9 pCi/g 09/11/97 nrf jlI12.8 pCi/g 09/11/97 nrf EPA 900.0 Gross alpha, Error +/•, Solid EPA 900.0 Gross alpha, LLD, Solid 14.1 pCi/g 09/11/97 nrf ill31.3 pCi/g 09/11/97 nrf EPA 900.0 Gross beta, Solid _EPA 900.0 Gross beta, Error +/-, Solid 6.9 pCi/g 09/11/97 nrf :PA 900.0 Gross beta, LLD, Solid 8.8 pCi/g 09/11/97 nrf EPA 901.1 Lead-210, Solid <8.5 pCi/g 10/09/97 ddp EPA 901.1 Lead-212, Solid <4.5 pCi/g 10/09/97 ddp 4.8 pCi/g 10/09/97 ddp EPA 901.1 Lead-214, Solid EPA 901.1 Lead-214, Error +/-, Solid 0.4 pCi/g 10/09/97 ddp iEPA 901.1 Radium-226, Activity, Solid <4.5 pCi/g 10/09/97 ddp EPA 901.1 Thallium 208, Solid 4.3 pCi/g 10/09/97 ddp EPA 901.1 Thallium 208 error, Solid 0.6 pCi/g 10/09/97 ddp mod. HASL 300 Thorium-228, Solid 2.7 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-228, Error +/-, Solid 0.8 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-226, LLD, Solid 0.3 pCi/g 09/18/97 nrf III mod. HASL 300 Thorium-230, Solid 3.8 pCi/g 09/18/97 nrf III mod. HASL 300 Thorium-230, Error +/-, Solid 1.1 pci/g 09/18/97 nrf mod. HASL 300 Thorium-230, LLD, Solid 0.3 pCi/g 09/18/97 nrf ji 2.8 pCi/g 09/18/97 nrf mod. HASL 300 Thorium-232, Solid mod. HASL 300 Thorium-232, Error +/-, Solid 0.9 pCi/g 09/18/97 nrf . HASL 300 Thorium-232, LLD, Solid 0.3 pCi/g 09/18/97 nrf II Page 26 ATTACHMENT H JUN O3 '99 O9:O8RM RNRLYTICR GROUP P. 1/1 A, 325 Inter:oaken Parkway Suite 200 Broomfield,CO 80021 . (303)489.8888 (800)873-8707 AN FAX:(303)488-5254 RNVIRI.YTICA IteanaTowSs en Anelylica Stoup company FACSIMILE TRANSMITTAL FORM PLEASE HAND DELIVER IMMEDIATELY r TO: Jahy — FAX: — t79-- y9 3 - 79111 FROM: JEANINE CAMP I -800-673-8707 EXr # 180 DATE: 6y3/9f NUMBER OF PAGES: / (INCLUDING COVER SHEET) COMMENTS: Jobs . tvr.. U.S ca ` 13.1.-I 6iXiretc/1.Th ctie, g it fha pd' (AL. re r? S Foilo-S; `-9t2I/1 $7 - 0.111 - S . Hf ---h-) 5.13 /or�11,/ o(sn%, it 9 /54 - 03/9 = S' . 34 ---4 01 n 3oh1" 1A T1021555`?51 - 001 = Ji. L"n2 ----' b 9g 0.11,'el dokr2. ,1 99a:11r543• - a .H - /2./0. --' ia.l Cl F S, 0 i14 9'I Og I5 x - o_/7 = // /C) ---- 6. 1./ 5, /G /111,‘ 213 7: '�\11Fler' LxfrnOtrrnri Gt rt (X!nate.IO" TO RESPOND BY FAX, PLEASE DIAL (303) 469-5254 ANALYTICA'S TOLL. FREE NUMBER IS (800) 873-8707 ATTACHMENT I Extractions: • Once the column was completely saturated and checked for preferential flow paths, the experiment was started. • The flow rate in the peristaltic pump was adjusted to produce as constant up-flow of 1 liter in 12 hours. • pH and conductivity reading were taken of the extracted water. • The extracted water was separated equally into the 3 bottles provided by the lab, each with different types of preservatives. • Material with low hydraulic conductivities, collect and analyze pore volumes 1,2 and 4. • Material with high hydraulic conductivities, collect and analyze pore volumes 1,4 and 8. Lab Analysis: • Fill out Chain of custody forms for the bottles and store at 4°Celsius. • A list of metals to be analyzed for was compiled from the results of the Sequential Extraction Leaching Procedure (SELP). Synthetic Ground Water Column Leaching Procedure (SGCLP) Methods and Procedures Apparatus: • A Penneameter Column was used during the experiment. The column was filled with material and water was pushed through the bottom of the column and extracted out of the top. • To attain the lliter pore volume required, pieces of plexiglass tubing were cut to length depending on the porosity of the material that was going to be tested. • A peristaltic pump was used to produce the constant up-flow rate of 1 liter per 12 hours through the column. Preparing the sample: • To attain the required 1 liter pore volume,the column length was calculated using the results form the previously completed porosity test. • The column was filled by compacting and vibrating the material into eight approximately equal layers. Preparing the Water: • Distilled water was used to ensure the purity and quality of the water. • Diluted solutions of Acetic Acid and Sodium Hydroxide were used to change the pH of the in fluent water to the desired level. • Records of the pH and conductivity levels of the water were taken before injected and were taken once extracted from the column. Saturating the Column: • The peristaltic pump was used to produce slow constant up-flow that thoroughly saturated the column. • To insure proper saturation without any preferential flow channels, the column was slowly saturated for 12 hours. Preparing the sample: • Weigh the mixing bottle with wet mixture in it. • Subtract the weight of the bottle from the combined weight to get weight of wet material. • Record information on the SREP form. • Measure 1500 ml of specified pH water • Pour 1500 ml of material into mixing bottle with material • Mix water and material in bottle(by hand ) • Take pH of mixture(before turning) • Take conductivity reading(before turning) • Take temperature reading (before turing) • Record all information on the SREP form. Turning the sample: • Place bottle with mixture in it into the rolling extraction apparatus. • Roll bottle in apparatus for minimum of 18 hours • Record start and end times on SREP form Stop Turning • Take Bottle off extraction apparatus. • Immediately take a pH reading of the mixture • Immediately take a conductivity reading of the mixture • Immediately take a temperature reading of the mixture • Record all information on the SREP form. Filtering water • Get 1 of each bottle (NaOH, HNO3 , plain) • Filter into each bottle the mixture to extract the water. • Use #1 filter for Ash and use#4 filter for larger material. • Fill each bottle just under half full. Sequential Extraction Leaching Procedure Extraction 1 Preparing the sample: • Weigh the mixing bottle. • Weight 500 mg of material. • Pour 500 mg of material into mixing bottle • Measure 1500 ml of specified pH water • Pour 1500 ml of material into mixing bottle with material • Mix water and material in bottle (by hand ) • Take pH of mixture(before turning) • Take conductivity reading(before turning) • Take temperature reading (before turing) • Record all information on the SREP form. Turning the sample: • Place bottle with mixture in it into the rolling extraction apparatus. • Roll bottle in apparatus for minimum of 18 hours • Record start and end times on SREP form Extraction 1 • Take Bottle off extraction apparatus. • Immediately take a pH reading of the mixture • Immediately take a conductivity reading of the mixture • Immediately take a temperature reading of the mixture • Record all information on the SREP form. Filtering water • Get 1 of each bottle(NaOH, HNO3 , plain) • Filter into each bottle the mixture to extract the water. • Use #1 filter for Ash and use#4 filter for larger material. • Fill each bottle just under half full. • Filter until the material does not have pooled water on it. • Place material that has collected on the filters back into the mixing bottle. Sequential Extraction Leaching Procedure Extraction 2 ATTACHMENT J Environ. Sc!. Technol.1999, 33,3405-3409 Clay Formation and Metal Fixation several decades(1).Developing countries consume 55%of global coal production(^-3.5 x 109 ton/yr),but their share dunng Weathering of Coal Fly Ash will increase to 65%over the next 15 years(2).Fly ash is the major solid byproduct of coal combustion(10-50%w/w). Most of it(8 x 107 ton/yr in India alone(31)is disposed of CHRIS Z E V E N B E R G EN 9•1 on land,but because It contains elevated levels of leachable IWACO B.V.,Hoofdweg 490.3067 OK Rotterdam, toxic elements such as As, B, Cr, Mo. Ni, Cu,and Zn (M, The Netherlands disposal of such huge quantities raises serious environmental JOHN P. BRADLEY concerns.Current waste disposal regulations call for isolating coal fly ash deposits In containment systems that prevent MVA,Inc.,5500 Oakbrook Parkway,Suite ZOO, leaching of contaminants. Since long-term isolation from Norcross. Georgia 30093,and School of Materials the weathering environment cannot be guaranteed, the Science and Engineering,Georgia Institute of Technology, weathering behavior of coal fly ash is crucial for its long- Atlanta, Georgia 30332-0245 term environmental impact.It has been suggested that coal L. PIET E T VAN REEUWIJK E U W I J K fly ash weathering is analogous to that of volcanic ash(5). In[ematlonal Soil Reference and Information Centre, The weathering of volcanic ash has been extensively inves- tigated,butthe weathering of coal fly ash has not.Numerous Duivendaal 9, 6701 AR Wageningen, The Netherlands studies have shown that formation of noncrystalline clay in A. K. S H YAM volcanic soils has a beneficial effect on soil properties(e.g., strong anion and cation adsorption capacity) (6-10). We National Thermal Power Corporation Ltd.,A-8,Sector-24. Notda-201301 (UP),India studied the weathering characteristics of coal fly ash that had been allowed to weather in a hot tropical seasonally dry O L E Hi E L M A R climate(AP.India)and in a cool oceanic climate(Denmark) Water Quality Institute,Research Centre, II Agem AI* areas open to.the atmosphere and compared them with DK-2970,Hersholm.Denmark published data from weathered volcanic ash.In addition,we investigated the implications of ash weathering on heavy ROB N. J. CO M A N S metal leaching using different extraction procedures in Netherlands Energy Research Foundation.P.O.Box 1, conjunction with electron microscopy. 1755 LE Petten, The Netherlands Experimental Section Two types of coal fly ash were used in this study.The first type was obtained from an 8-year-old forestry experiment The enormous and worldwide production of coal fly ash on an ash deposit in Ramagundam(AP),India.Contrary to cannot be durably isolated from the weathering cycle,and expectations, the tree species of the forestry experiment the weathering characteristics of fly ash must be known (Acacia auriculiformis, Casuarina equisetifolia, and Euca- to understand the long-term environmental impact We studied lyptusglobulus)wereall observed to growat rates comparable the weathering of two coal fly ashes and compared with that in fertile soil.The second type was obtained from them with published data from weathered volcanic ash, a 14-year-old (open) large-scale lysimeter experiment in it's closest natural analogue. Both types of ash contain Hersholm, Denmark. The weathered coal fly ash in both deposits was unsaturated with water,and the samples were abundant aluminosilicate glass,which alters to noncrystalline collected from a depth of 15-30 cm beneath the surface.For clay. However, this study reveals that the kinetics of comparison, we also investigated recently produced fresh coal fly ash weathering are more rapid than those of volcanic coal fly ash. For both Danish and Indian ashes,fresh and ash because the higher pH of fresh coal fly ash promotes weathered samples came from the same coal combustion rapid dissolution of the glass. After about 10 years of facility.Both facilities were fueled with bituminous coal.The weathering, the noncrystalline clay content of coal fly ash kinetics of coal fly ash glass weathering and day formation is higher than that of 250-year-old volcanic ash.The were derived by measuring pH. cation exchange capacity observed rapid clay formation together with heavy metal (CEC).and oxalate-extractable Al (AU and Si (Sir) of the fixation imply that the long-term environmental impact of ash samples.These attributes were determined according to Mizota and Van Reeuwijk(6).Add oxalate selective extraction coal fly ash disposal may be less severe and the benefits (0.2 M.pH 3) of bulk coal fly ash samples was used for the more pronounced than predicted from previous studies quantitative estimation of the Al and Si fraction associated on unweathered ash.Our findings suggest that isolating coal with noncrystalline (short-range order) hydrous alumino- fly ash from the weathering cycle may be counterproductive silicates such as allophane and imogolite as well as Al humus because, in the long-term under conditions of free complexes(11, 12).Since the organic matter content of the drainage, fly ash is converted into fertile soil capable of weathered coal fly ash samples was found to be very low supporting agriculture. (<0.1 wt%).it was assumed that oxalate-extractable Al(Al.„) and Si (Si.) arise mainly from hydrous noncrystalline aluminosilicates.The binding of heavy metals by fresh and Introduction weathered coal fly ash was compared by performing two Coal combustion accounts for about 37% of the world's types of extractions using a pH-static extraction procedure: electricity production, and this will continue for the next (i)ammonium oxalate extractions and (ii)aqueous extrac- tions.Since ammonium oxalate also extracts poorly ordered *corresponding author telephone: +31235692345;fax: +3123 5692310;e-mail: chris.zevenbergen@wxs.nl. iron oxides such as ferrihydrate but not goethite and hematite Present address: Vermeer Environment B.V..P.O.Box 14.2130 (ref 6and references cited therein),the heavy metal fraction AA Hoorddorp,The Netherlands associated with noncrystalline hydrous aluminosilicates and 10.1021/es99001S1 CCC:$18.00 O 1999 American Chemical Society VOL.33,NO.19.19991 ENVIRONMENTAL SCIENCE&TECHNOLOGY a 3405 Published on Web 08/2611999 TABLE 1.pH, CEC and Al,,and Si„Content of Fresh and Weathered Volcanic Ash (Mt. St. Helens) and Fresh and Weathered Indian and Danish Coal Fly Ash' volcanic ash(14) Indian coal fly ash(this study) Danish coal fly ash(this study) fresh weathered° fresh weathered' fresh weathered' pH(H20) 6.3 5.4 11.7 8.6 12.3 8.3 CEC,cmol,kg-1 1.0 1.2 2.9 8.1 2.1 10.1 acid oxalate extract Al,%(w/w) 0.02 0.04 0.2 0.4 0.2 0.4 Si,%(w/w) 0.01 0.01 0.2 0.5 0.3 0.5 •Samples of the weathered volcanic ash were collected from the top layer 10 yr after deposition.The data of volcanic ash were obtained from Dahlgren et al.(14).MO yr.°8 yr.°14 yr. 10- Of volcanic ash: • 2,0009,000 yr EIP I le • 2a 000 6a,00a rBP , • 250-150,000 yr DP t • coal fly ash: • Datrlsh ash(14 yr) Al 0,1 , at•f • Indian ash(8 yt) +r A1istn AJ81=.7 9,01 0.01 0.1 1 10 Sian content(4t.,wlw) FIGURE 1. Relationship between acid oxalate-extractable Al (Ala and Si (Si.,) content(%,w/w) of weathered volcanic ashes and weathered coal fly ashes.Volcanic ash data: Holocene tephras(Canada;2000-6000 yr BP)from tang(27),rhyolitic and andestic tephras (New Zealand;20 000-40 000 yr BP)from Partin and Wilson(14,Andosols(Indonesia and Equador;<150 000 yr BP,only B-horizons)from Mizota and Van Reeuwijk(6),Andosols(Japan; <150 000 yr BP)from Shoji and Fujiwara(2W. ferrihydrites was revealed from the difference between the identified in these structures were measured using quantita- oxalate and the aqueous extractions.The pH-static extractions tive EDS.Spectra were acquired using a 10-500-nm diameter were performed by leaching 20 g of coal fly ash in 1 L of electron probe.Spectral acquisition times of 500-1000swere demineralized water and 0.2 M ammonium oxalate solution used. in a 1.5-L PE reaction vessel under continuous stirring.The oxalate extractions were carried out in the dark.The pH of Results and Discussion the suspension of both types of extractions was automatically adjusted using a pH-stat system with analytical-grade HNO3 The pH, cation exchange capacity (CEC), and oxalate- at predetermined and consecutive pH values of 8.3,5.5,4.0, extractable Al(Al.,,)and Si(Si.,,)of fresh and weathered(8- 3.0. and 2.0 (aqueous extractions) and of 5.5. 4.0, and 3.0 and 14-year-old)coal fly ash are given in Table 1.The data (ammonium oxalate extractions). At each pH value. the are compared with published data from fresh and weathered suspension was allowed to equilibrate for 12 h.and a 20-mL (10-year-old)volcanic ash(14).The pH of both coal fly ashes aliquot of the suspension was removed for analysis after decreased by 3.1 and 4.0 units after 8 and 14 yr of weathering, centrifugation(15 min at 2 x 104 m/s9 and filtration(0.2µm respectively,whereas the pH of the volcanic ash decreased membrane filter).The concentration of Cr,Cu, Ni,and Zn by 0.8 unit.Both CEC and Ala,and Sin content were relatively of the clear supernatant was determined using atomic high in the fresh coal fly ash and increased with weathering emission spectroscopy—inductive coupled plasma (AB— but remained relatively low and constant in the volcanic ash ICP).The pH-static extractions were carried out on the Indian during 10 yr of weathering.We also compared Ala,and Sin ashes. data from both weathered coal fly ashes with published data X-ray powder diffraction and analytical transmission from older weathered volcanic ashes of different ages and electron microscopy (TEM) were used to characterize the from different climatic regions(Figure 1).For the volcanic secondary products formed during coal fly ash weathering. ashes.AI°,content was corrected for Al in humus complexes The latter technique was also employed to study heavy metal according to the procedure by Parfitt and Wilson (12) and immobilization at the microscopic level.For TEM analysis. Mizota and Van Reeuwijk(6).These results indicate that the samples were prepared by embedding fresh and weathered kinetics of clay formation from coal fly ash differ funda- coal fly ash in epoxy and thin-sectioning using ultramicro- mentally from those of volcanic ash. AI°,and Sin levels in tomy(13).The compositions of the individual fly ash spheres weathered (8- and 14-year-old) coal fly ash fall within the and secondary compounds were measured using energy- range of much older volcanic ashes(>250yr).and M/Si molar dispersive X-ray spectroscopy (EDS). The heavy metals ratios in the coal fly ash clays are much lower 'from 0.5 to 3406•ENVIRONMENTAL SCIENCE&TECHNOLOGY/VOL.33.NO.19.1999 100 100 tr Er ril rn 1 — .. 1 - ca E E S 0.1 — v o0.1 — 0,01 I I I ) 0.01 t -F I I 0 2 4 6 8 10 0 2 4 6 8 10 pH pH 100 100 a--AD 10 co O no 10 - f 3-13---O • n ta a ag — ....t. 1 — NThz1/4„......NO o 1 E E E 0.1 — cj 0.1 — 0.01 I I I i 0.01 i I I i I 0 2 4 6 8 10 0 2 4 6 8 10 pH pH FIGURE 2. Total leached Cr,Cu,Ni,and Zn in fresh and weathered Indian coal fly ash leachates On mg/kg of ash)after extraction with demineralized water and ammonium oxalate(0.2 IN)solution at a liquid-to-solid ratio of 50 as a function of pH.Symbols: closed circle, fresh ash;open circle,weathered ash;dotted lines,ammonium oxalate extractions;solid lines,aqueous extractions;triangle,detection limit TABLE 2.Compositions of an Aluminosilicate Sphere and Clay Coatings on Grains in Weathered Coal Fly Ash Measured Using Energy-Dispersive X-ray Spectroscopy' Na20 Mg0 A1203 Si0% CI 1(20 Ca0 TiO2 Fez03 Coal Fly Ash(India) sphere(Figure 3a) 0.4 1.3 26.2 63.2 0.2 3.6 0.3 4.9 clay(Figure 3a) 4.3 15.4 22.2 40.9 3.9 2.9 2.5 1.3 6.6 clay 1.6 20.3 22.5 38.5 3.2 2.1 0.8 11.0 clay 2.4 22.4 23.3 40.7 1.4 0.2 1.3 0.3 8.1 clay 1.1 25.9 20.6 40.4 0.6 2.4 0.9 8.2 Coal Fly Ash(Denmark) clay 1.9 17.2 27.7 40.3 1.4 2.3 0.3 8.8 clay 1.4 18.6 25.7 39.7 1.4 2.4 0.1 10.8 clay 2.3 15.1 27.5 39.7 1.8 2.2 0.2 11.2 clay 1.3 17.8 25.7 39.4 1.6 2.5 0.3 11.4 •Experimental correction factors(K-factors)for Na.Mg,Al.Si.CI,K,Ti,and Fe are derived from analyses of thin-film mineral standards.Errors are±5%for oxides>10 wt%and I25%for oxides<10 wt%.Errors for Na20 and K10 are larger(±50-75%)because of volatility and mass loss under electron irradiation. 1.0 with a median of 0.7 (n= 16)1 than in the clays of the the aqueous extractability of Cr from the fresh ash is much volcanic ashes[from 0.9 to 7.4 with a median of 2.0(n=93)1. higher than that from the weathered ash at pH 2,suggesting Oxalate-extractable levels of Cu. Ni, and Zn from both that a large fraction of this metal has been depleted during fresh and weathered Indian ash (Figure 2) are constant in early leaching. These differences are likely due to the fact the pH range of 3.0-5.0 and comparable to the aqueous that Cr in fresh coal fly ash is predominantly present in the extractable levels at pH 2.0.which can be regarded as the hexavalent state (16). i.e..as the chromate anion,which is maximum amount of metal available for leaching (15). soluble and highly mobile in aqueous systems,and accord- _ Aqueous extractable levels of these metals from the weathered ingly more susceptible to leaching during initial weathering. ash in the pH range of 4.0-8.3 are significantly lower than Analogous to the other metals. in the weathered ash the from the fresh ash.indicating a much stronger retention of remaining(trivalent)Cr fraction exhibits a strong retention the metals by the weathered ash.The behavior of Cr differs in the neutral pH range.In a comprehensive leaching study, from the other metals: (i)Cr from the fresh ash exhibits no de Groot et al.(17)report that 50 coal fly ashes from all over pH-dependent leaching in the pH range of 4.0-8.3 and (ii) the world exhibit a very systematic and similar pH-dependent VOL.33.NO.19,19991 ENVIRONMENTAL SCIENCE&TECHNOLOGY•3407 A _ .._.... n Ti.V Icd Mn Fe,,, rem)Ni ICAO Zn (Cu) ! I l I l l Not aFA NEN nal 41.14 Ncd (a)Clay (nf E▪ lu1) hw31 • vpNh a14 h.nl RAN (b)Fertihydrite (c)Quartz s r r Energy(key) FIGURE 4. Energy-dispersive X-ray spectra(4-9 keV range)from (a)clay coating on a weathered coal fly ash grain,(b)ferrihydrite- - rich band within a clay coating,and(e)quartz fly ash sphere.Arrows indicate positions of Ka and KB peaks for Ti,Fe,and Cu and Ka peaks for V,Cr,Mn,Ni,and Zn(T K/I and V Ka peaks overlap).In spectra a and b,parentheses indicate element abundances(wt%) --- "° within±25%relative error for Ti,V,Mn,Fe,Ni,and Zn.Because of hard X-ray contamination of spectra (e.g, spectrum c), Cr ° abundances are±50%error and Cu is detected but not quantified. In spectrum c,the^-8 keV peak in the pure quartz(Si0z)spectrum ,- is a Cu hard X-ray signal caused by electron-beam scattering within - the instrument column.Total X-ray courts in the Fe Ka peak are 2 x Win panel a and 1.3 x 105 in panel b. glassy spheres and mineral grains in both weathered coal fly 4019 _ ashes.Selected area electron diffraction(SAED)patterns and lattice-fringe imaging indicate that the clay is noncrystalline Ca Il E' Imo 'J le.; (i.e., it lacks noticeable long-range order) (Table 2). The . . measurements reveal that the Al/Si molar ratios of the clays 'e1 are the same as those derived from the oxalate extractions. • A; t, i.e..0.5 <Al/Si < 1.0(Figure 1 and Table 2).Fe-rich bands } • :: and lenses commonly observed within the clays in both coal • t 9, fly ashes(Figure 3b)yield SAED patterns with weak lattice spacings at 0.25, -0.2, and 0.15 nm. These spacings are r} 1r '• ' .P ! •: • - consistent with the mineral ferrihydrite)FesOr(OH)•nHzO1. t 1 - • Neither clay coatings nor ferrihydrite were observed in �-- ' significant quantities in the fresh coal fly ash.The quantitative EDS revealed that Cr. Ni.and Zn abundances in the clays FIGURE 3. Brightheld electron micrographs of thin sections(<100 were typically 0.02-0.2 wt%(Figure 4).Levels of these heavy nm thick)of weathered coal fly ash spheres.(a)Aluminosilicate metals in the ferrihydrite were significantly higher (0.25-2 sphere with noncrystalline clay(allophane)coating(Indian ash). wt 96) and are consistent with the documented role of Composition of the glass and the rim are listed in Table 2(rows ferrihydrite in limiting metal leaching from other combustion 1 and 2).(b)Clay-coated sphere containing fine-grained calcium residues(15).Other heavy metals were not detected in either and iron phosphates(Danish ash).The dark ring at the surface of the clays or ferrihydrite using EDS. the sphere is fenihydrite. Weathered volcanic glasses typically contain noncrystal- line or short-order range aluminosilicate clay materials such leaching behavior.Therefore.it Is expected that the leaching as allophane and imogolite(7).Over time(150 000 yr),these properties of the Danish ashes, which have not been clays may transform into well-crystallized clay minerals(18). investigated in this study, are very similar to those of the The amorphous nature of the clays in the weathered coal fly Indian ashes. ashes is similar to that of allophane found in weathered X-ray powder diffraction (XRD) indicates that quartz volcanic ashes,but the clays in the weathered coal fly ashes (SiO2), mullite (Al6SizO13). and hematite (FezO3) are the have a much higher content of Mg and a lower Al/Si ratio. prominent crystalline phases in both fresh and weathered Factors affecting the kinetics of glass weathering include pH. ashes. The main difference in X-ray diffractograms (not glass composition,and temperature(19).Both very low and shown)is the appearance of calcite(CaCO3)in the weathered very high pH accelerate glass weathering by rapidly dissolving ashes.Figure 3 shows TEM images of two typical examples the silicates.pH also influences the composition of the formed of weathered coal fly ash grains: one an aluminosilicate clays.Noncrystalline aluminosilicate clays with a low Al/Si sphere that contains glass and submicrometer crystals and ratio are rich in alkalis and typically form in an alkaline the other a mixture of ultrafine-grained calcium and iron environment.as opposed to allophane with a high Al/Si ratio phosphates.Both spheres are coated with clay as are most which forms by acid weathering of volcanic glass(20-22). 3408•ENVIRONMENTAL SCIENCE&TECHNOLOGY/VOL.33,NO.19.1999 Over a pH range of 4.5-8.0,which is representative of young Acknowledgments volcanic soils(21),glass weathering includes initial dissolu- This work was supported by the Dutch Ministry of Foreign tion and exchange of aqueous hydrogen ions. Silicate Affairs(DGIS).We thank R.L.Parfitt and S.J.Cronin for their dissolution-becomes an important mechanism in solutions assistance in the acquisition of the data of volcanic ash of pH>9,where the soiub[iity of silica Increases rapidly with deposits.N.Sadasivan for providing fly ash samples,and E. Increasing pH(19).In contrast to volcanic ash,most coal fly Croin for laboratory assistance.We also thank P.R.Buseck ash contains high amounts of alkaline earth oxides. and and three other reviewers for constructive comments. during initial weathering,solutions in contact with coal fly ash generally develop extremely high pH values by reaction with oxide components (23, 24), leading to rapid glass Literature Cited dissolution. Due to uptake of CO2 from the atmosphere (1) Coal Information.lEA Statistics 1996,OECD: Paris, 1997. (carbonation)and microbial respiration,the pH of coal fly (2) Oskarsson,K.;Berglund.A.;Doling.R.;Snellman,U.;Stenback. ash decreases and stabilizes at values around 8.3(25).Since O.:Fritz,J.1.World Bank Technical Paper No.387;World Bank: neutralization reduces the solubility of Aland Si(2O).this pH Washington,DC, 1997. decrease promotes(further)precipitation of these constltu- (3) Kumar, V.; Sharma, P. In Proceedings of the International ents from fly ash pore water solutions,abundantly yielding ConferenceFlyAshDlsposalandUUlisatlon;India Central Board noncrystalline aluminosilicate with a relatively low Al/Si of Irrigation and Power New Delhi.1998:pp 1-7. molar ratio. The initially very highpH and its rapid (4) Eary,L E.; aLDh 199 , 19,R9,;Mattigod.S.V.:Ainsworth,C.C.J. g Environ.Qual. 1990, 201-214. neutralization during weathering distinguishes coal fly ash (5) Warren.C.J.:Dudes.M.J.J Environ.Qual,1985,14,405-410. from volcanic ash and is responsible for the observed (6) Mizota,C.;Van Reeuwljk.L P.Clay mineralogy and chemistry widespread formation of noncrystalline clays in the weath- of soils formed in volcanic material N diverse climatic regions: ered coal fly ashes. Soil Monograph 2:IntemationalSoi Reference and Information The analytical TEM data provide new insight into sec- Centre: Wageningen.The Netherlands. 1989. Ond mineral formation during coal fly ash weathering. (7) Wada,K.In Minerals 1n Soil Environments Dixon.1.B..Weed, arY g S.B.,Eds.;Soil Science Society of America: Madison,WI,1977; Coatings ofnonaystalline clay on individual weathered coal pp 603-636. fly ash grains typically exhibit constant (major element) (8) Wada,K.In Soils with variable charge,Theng.B.K.G.,Ed.:Soil compositions,irrespective of the composition and mineralogy Bureau: Lower Hutt,New Zealand.1980:pp 87-109. of the grains on which they are deposited.This observation (9) Gonzalez,R.;Appelt,H.:Schalscha,E.B.:Bingham.F.T.Soil Ssuggests that precipitation rather than in situ transformation Am.Proc.1974,38,903-906. of aluminosilicate glass is the primary mechanism of clay (10) Clark.C.J.:McBride,M.B.Clays C1 Miner.1984.32.291-299. formation in these deposits.Furthermore.the composition (I q McKeague.1.A.;Day,J.H. Can.J Soil Soil Sci. 1966.46. 13-22. of the clay in both weathered coal fl ashes is almost identical (12) Partin.; FerR.L.; ilson, D.Yaalon.n D. H., Catena s; era Supplement Y 7; Fernandez Caldas. E.,Yaalon, D. Eds.; Catena Verlag: even though the ashes were derived from different coals and Cremlingen. 1985:pp 1-8. weathered under different climatic conditions for different (13) Bradley.J. P. Geocldm. Cosmochim.Acta 1988, 52,889-900. time periods(8 and 14 years) (Table 2).Locally,high levels (14) Dahlgren.R.A.:Dragoo.1.P.;Ugolini.F.C.Soil Sci.Soc.Am. of Fe during clay precipitation are lowered by coprecipitation 1. 1997.61, 1519-1525. of ferrihydrite(Figure 2).The TEM/EDS analyses(Figure 3) (IS) Meima.1.A.:Comans,R.N.J.Environ.Sci. Technol.1998,32. 688-693. reveal a strong partitioning of heavy metals into the clay (16) 211.:Rai,D.;Zachara,J.M.Environ.Sci.Technol.1990, (and in minor amounts into associated ferrihydrite) in 244. 117 1173--1179 accordance with the ammonium oxalate selective extraction (17) De Groot,G.J.;Wijkstra,J.;Hoede,D.:van der Sloot,H.A.In results shown in Figure 2. Since this clay is much more Environmental Aspects of Stabilization and Solidification of abundant than ferrihydrite and clay coatings define the major Hazardous and Radioactive Wastes;Cote,P.L.,Gilliam,T.M., interface between the fly ash spheres and the water phase Eds.; ASTM Standard Technical Publication 1033: American in weathered coal fly ash,these noncrystalline aluminosili- Society for Testing and Materials: Philadelphia,1989;pp 170— 183. cafes are likely to be the major repository of heavy metals. (18) Torn. is S.;D. M.Nature a 7 389,17,A. 73.Vitousek,P.M.; These findings are consistent with the observed heavy metal Hendricks. M.Nature 1997.389. 170-173. fixation by allophane in weathered volcanic ash (9. 26).In (19) White,A.F.J Non-Cryst.Solids 1984. 67.225-244. volcanic ash soils.such clays are stable on a time scale of 105 (20) Wada.S.:Wada,K.Soil Sci. 1981. 132,267-273. years and may eventually transform into even more stable (21) Parftt,R.L:Kimble.J.M.SollScl.Soc.Am.J.1989,53,971-977. crystalline clay minerals (1 ). (22) Mattson,S.Soil Sci. 1928,25.289-311. (23) Elseewi,A.A.:Page.A.L.:Grimm.S.R.J Environ.Qua1.1980, This study reveals that although the weathering of coal9. . (24) En fly ash is similar to that of volcanic ash.the kinetics of coal Ma tigod. Dhanpat Eary. L. E.:Ainsworth, C. C. fly ash weathering are considerably more rapid.The com- viron. Qual. 1990, 9, 188-201. J. position of the neoformed clay appears to be independent (25) Schramke,I.A.Appi. Geochem. 1992, 7 481-492. of the coal source and weathering climate. Early and (26) Bajwa.M.I. Commun.Soil Sck Plant Anal. 1984. 15(2). 135- widespread precipitation of this clay and other secondary 140. compounds(e.g..ferrihyd rite)during coal fly ash weathering (27) King.R.H.In Rates ofchemical weathering of rocks and minerals Colman,S.M..Dethier,D.P.,Eds.;Academic Press: Orlando, has important environmental implications.Upon weathering, Sh pp 239-264. (28) i heavy metalsand other[code species that are mobilized during dissolution of glass and other minerals are efficiently Shoji.S.:Fujiwara.ara.Y.Soil Sci. 1984, 137,216-226 immobilized by this noncrystalline day and ferrihydrite.The Received for review January 7, 1999.Revised manuscript clay provides both a physical barrier to heavy metal leaching received June 30, 1999.Accepted July 6. 1999. by coating and encapsulating grains and a chemical barrier by incorporating metals within its structure. ES9900151 VOL.33.NO.19.1999/ENVIRONMENTAL SCIENCE&TECHNOLOGY•3409 CGSENVIRONMENTAL • CONSTRUCTION • COMPLIANCE 6)— March 14,2000 Mr. Roger Doak Colorado Department of Public Health and Environment (CDPH&E) Hazardous Materials and Waste Management Division 4300 Cherry Creek Drive South Denver,CO 80246-1530 RE: Response to Column Testing Comments Proposed Varra Coal Ash Proposal Weld County,Colorado CGRS No. 1-135-2755 Dear Mr. Doak: This letter address issues presented in your correspondence and attachments dated February 23, 2000 regarding our proposed column testing method. I have attached your letter for reference. My comments to your issues are provided below. I. We do anticipate using bottom ash during the pilot project. The reuse of bottom ash is on the order of 100% because of its value and would not be used in any large-scale project. Nevertheless, we will conduct column testing of the bottom ash in addition to the fly ashes. 2. Information provided by Terracon Geotechnical Services indicate the in place density of gravel at the Varra quarry is approximately 118 pounds per cubic foot (1.89g/cc) at an average moisture content of 13 percent. This means the dry bulk density is approximately 1.67 grams per cubic centimeter. The dry bulk density of ash used on previous experiments varied between 0.90 and 1.20 grams per cubic centimeter, which is comparable to published values for ash. CGRS has initiated a leaching experiment using the ashes as described in the enclosed Quality Assurance Project Plan (QAPP). The calculated density of the gravel for this experiment is 1.91 grams per cubic centimeter. The calculated density of the ash is 0.915 grams per cubic centimeter. Calculations are presented in Attachment A. These data show that the in situ field density of the gravel is closely approximated. The in-place density of the ash is also comparable to published data and previous experiments. P.O. BOX 1489 • FORT COLLINS, COLORADO 80522 • PHONE: 970-493-7730 • FAX: 970-493-7986 Mr.Roger Doak Coal Ash Pilot Project Proposal March 14,2000 Page 2 of 2 3. Background sampling has been performed on three occasions and the analytical results are presented in Attachment B. A review of analytical data show analyte concentrations as recommended by Mr. Ken Neiswonger of CDPH&E. It is anticipated that a minimum of four sampling events will be conducted to determine background water quality. 4. CGRS has amended its analytical parameters to include alkalinity as carbonate and bicarbonate, phosphorus, titanium, molybdenum, mercury, and uranium. Total cyanide was eliminated from the suite, as it was not detected above any standards in any of the samples submitted during the previous experiments. 5. As requested a QAPP for the Varra Coal Ash Project — Leaching Test is presented as Attachment C. 6. It is our opinion that coal ash does not undergo significant physical or chemical changes with time under atmospheric conditions. Calcium oxide (lime) can combine with carbon dioxide to form calcium carbonate, but under dry (atmospheric) conditions this process is extremely slow. Saturated paste tests using fresh ash and ash in excess of a year old (stored in a dry state) resulted in negligible pH differences, which indicates the transformation of calcium oxide to calcium carbonate is not prevalent. Thermal transformation of major inorganic phases during coal combustion creates mineral assemblages that are fairly stable when dry. When saturated with natural waters, secondary mineral phases can occur as a result of the dissolution of elements in soluble salt or oxide forms and reprecipitation of those elements into stable mineral assemblages. These secondary mineral assemblages are generally highly insoluble under most natural conditions. The purpose of this project is to determine the elemental leaching capability of unweathered coal ash in contact with natural waters. All of the ash used in the proposed pilot study will be reflective of the ash used in the column study. As such, curing is not needed for this study. If you have any questions regarding this letter or enclosures,please contact me at(970)493-7780. Sincerely, CGRS,INC. A\ t l r a"vw ___ Joby I,.. Adams,P.G. .. rincyaVHydrogeologist Attachments cc: Mr.Chris Varra—Varra Companies Mr. Dave Goss—PSC Mr. Trevor Jiricek—Weld County Health Department Ms. Christina Kamnikar-Colorado Division of Minerals and Geology STATE OF COLORADO Bill Owens,Governor •0(c� Jane E.Norton,tacsuuvc Director Dedicated to protecting and improving the health and environment of the people of Colorado 4300 Cherry Creek Dr.S. Laboratory and Radiation Services Division • . Denver,Colorado 60246-1530 9100 Lo,,ry Blvd. •ram Phone 130"a)692-2000 Denver CO 302330-6926 Colorado Department TDD line 1303)691-7700 (303)692.3090 epamn Located in Glendale, Colorado of Public Health and Environment h up://www.cdpM.sta rc.co.us February 23, 2000 Joby Adams CGRS P.O. Box 1489 Fort Collins, Colorado 80522 RE: Proposed Column Testing Varra Coal Ash Project Dear Mr. Adams: Your letter of January 26, 2000 requested comments from the Hazardous Materials and Waste Management Division (the Division) regarding a proposed column test method for the Varra coal ash project. Specifically, you are proposing modifications to test method ASTM D4874-95. This test method is a standard laboratory procedure for generating leachate from materials used in the test. Your letter explains that a column will be filled with fly ash and native soil (from the Varra test site). A divider will be placed in the column to allow a vertical separation of the materials. The divider will be removed as the column is filled. The Division has the following comments on the modified column test. 1. The certificate of designation application for this site suggests that bottom ash in conjunction with fly ash will be placed in a trench at the Varra gravel mining facility in Weld County. However, your letter indicates only fly ash will be tested. All proposed materials (e.g.,bottom ash, Class F and C fly ash) must be evaluated by the column test. 2. Column compaction should simulate, to the extent possible, field compaction efforts for fly ash and bottom ash. In addition, the in situ field density of the native material should be determined and this data used when packing native soil in the column. 3. Your proposal states, water from the gravel pits at the Varra facility will be used as the reagent water. We would appreciate a copy of the reagent water laboratory analyses prior to commencing the column tests. Providing the data before testing will help to understand and evaluate column effluent and, if necessary, make appropriate changes to the column test. 4. On Page 2 of your letter a list of twenty (20) metals, which will be submitted for laboratory analyses, is provided. Absent from the list is mercury and titanium. These two constituents 7n .J )c-”T nnn7 c7 0@a cccc-FBI-S S:xp S1uIaFIdW 2Hk Mr. Joby Adams February 23, 2000 Page 2 were included in the fly ash analytical evaluation submitted as part of the certificate of designation application. Mercury and titanium have been identified in ash from coal combustion and must be included in effluent sample testing. S. A Quality Assurance Project Plan(QAPP)must be prepared. The QAPP needs to specify sampling process design, sampling method design, analytical method requirements, laboratory quality control, data assessment and oversight and data validation. 6. Section 10.1.4 of ASTM D 4874-95, provides a discussion on curing samples prior to testing. Curing is recommended for materials that undergo physical or chemical changes with time. Given the physical changes which occur when fly ash is hydrated, it appears appropriate to prepare the test specimen in a manner that simulates the state the waste will be in as it undergoes leaching in the field. Provide a discussion on this issue. These conclude the Division's comments regarding the proposed method for column testing. If you have any questions, please contact me at(303) 692-3437. Sincerely, Roger Doak Solid Waste Unit Compliance Program cc: Trevor Jiricek, Weld County Department of Public Health and Environment Harry Posey, Colorado Division of Minerals and Geology Ken Niswonger, HMWMD sw/wld/var 4 ____ -_ __ ,,..- Cwlv7IMJ 7HW ATTACIMVIEENT A Calculations wl u.h4,n J VN,r-2A Con( Asti RkoJEcT � Afa wr.5 Z�ZZ10 d / — -- t °�oA)019 ,t- of �f l - 5..z5 145 _ _ C- — _ _ i0 motss rot t (23?/•34 a A 514 i) 1AoO1As -' 41,2s /45 Asti - car(( . (Jocl/.fl29) 0 E "3-0o/o 3D/ om2 e� Gm a( )71Is. c/2 eo-.+ 3 Volt,ion 222 ,DC 0 O 0 Z W 3G// /241/T2 :� /• 9/ Vent3 .2oq/. Ii-°z /2Z25.q& C»w3-) GDsvvidi o{ qr l (e -m-e--•( 6•,l'rerfe-con /- 81 t/enn3 ( �icU Doi Lik d sL&1 {epa+eJ 6.1 C5ci CASH) o.10 - /20 9/cn-,3 c of ,ak - Ave/cis C of f S,(o /4511` ..( 'I Mon z 0l-..aruaa�. R5 H L.,` s o i l��•., r-7•- 1-� b� Ccl v x = Q• 1/46. 9S of 9 fe^^1 ( ✓cluN e. _cl rc c1 z3P/, Re Z.G/4 3 l 'fed 7 9/2 yo cm) 3 U403,4e_of wow.r 238., /LL-C+- Voluw,e air , .. 3 I zu5 . c[2 — 9l2 .4o — 9 (. 38 _ voko sib d ; 333 0L 95- /9ta 7 0. _36 (0.2 ' oec yak,vwe t° r Qoluw.n > ISJ3. S.i 'me .I4Q3./b o7t ... A, r Lite rs __ ... ATTACHMENT B Analytical Results—Gravel Quarry Water QA/QC REPORT METHOD BLANK SUMMARY PAGE: 1 CLIENT: TECH LINK 03/02/99 ORDERH: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE 1REC FLAG LOW UPPER MB-DI LEACH Cyanide, Weak/Acid Disso mg/L 02/26/99 ND 0.010 MBIPOND) CYANIDE, Total mg/L 02/26/99 ND 0.010 MB CHLORIDE by IC. Solids mg/Kg 02/18/99 ND 1.0 MB IS) CHLORIDE by IC, Solids mg/Kg 02/24/99 ND MB(POND) CHLORIDE by IC mg/L 02/26/99 76 20 0 MB FLUORIDE by IC, Solids mg/Kg 02/18/99 .0 0.50 MB(pond) FLUORIDE by IC mg/L 02/25/99 4.0 0.10 MB NITRATE as N by IC, Solids mg/Kg 02/18/99 ND 0.50 MB NITRATE as N mg/L 02/26/99 ND 0.10 MB(pond) NITRATE as N mg/L 02/25/99 1.0 0.10 MB POND NITRITE as N by IC mg/L 02/18/99 ND 0.10 MB NITRITE as N by IC mg/L 02/24/99 ND 0.10 MB NITRITE as N by IC mg/L 02/25/99 ND 0.10 MB SULFATE by IC, Solids mg/Kg 02/18/99 ND 7.5 MB SULFATE by IC mg/L 02/24/99 ND 0.50 MP ND) SULFATE by IC mg/L 02/26/99 2900 50 D MB-9900171 ICP Metals, Total ng/L 02/25/99 Aluminum ND 0.050 Antimony ND 0.050 Arsenic ND 0.050 Barium 0.0096 0.0040 Beryllium ND 0.0020 Boron 0-30 0-050 Cadmium ND 0.0050 Chromium ND 0.010 Cobalt ND 0.010 Copper ND 0.0050 Iron 0.056 0.050 Lead ND 0.050 Lithium 0-027 0.010 Magnesium 220 0.10 Manganese 0.028 0.010 Molybdenum 0.010 0.0050 Nickel ND 0.010 Potassium 4.8 1 0 Selenium ND 0.10 Silicon ND 0.50 Silver ND 0 0050 Sodium 210 3 0 Strontium 1 .0 0.050 Thallium ND 0.20 Tin ND 0.050 Titanium ND 0.050 Vanadium ND 0.010 Zinc ND 0.0050 QA/QC REPORT METHOD BLANK SUMMARY PAGE: 2 CLIENT: TECH LINK 03/02/99 0RDERN: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE 4REC FLAG LOW UPPER MB-990017O ICP Metals, Total ng/L 02/25/99 Aluminum ND 0.050 Antimony ND 0.050 Arsenic ND 0.050 Barium ND 0.0040 Beryllium ND 0.0020 Boron ND 0.050 Cadmium ND 0.0050 Calcium ND 0.10 Chromium ND 0.010 Cobalt ND 0.010 Copper ND 0.0050 Iron ND 0.050 Lead ND 0.050 Lithium ND 0.010 Magnesium ND 0.10 Manganese ND 0.010 Molybdenum ND 0.0050 Nickel 0.011 0.010 Potassium ND 1.0 Selenium ND 0.10 Silicon ND 0.50 Silver ND 0.0050 Sodium 1400 3.0 Strontium ND 0.050 Thallium ND 0.20 Tin ND 0.050 Titanium ND 0.050 Vanadium ND 0.010 Zinc ND 0.0050 QA/QC REPORT METHOD BLANK SPIKE SUMMARY PAGE: 3 CLIENT: TECH LINK 03/02/99 ORDERS: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE REF VAL tREC FLAG LOW UPPER MBS-DILEACH Cyanide, Weak/Acid Disso mg/L 02/26/99 0.22 0.010 0.20 0 110 80 120 MBSD-WAD Cyanide, Weak/Acid Disso mg/L 02/26/99 0.21 0.010 0.20 0 105 80 120 MRS CHLORIDE by IC, Solids mg/Kg 02/18/99 28 1.0 25 ND 112 80 120 MBS (SI CHLORIDE by IC, Solids mg/Kg 02/24/99 27 1.0 25 ND 111 80 120 MBS(POND) CHLORIDE by IC mg/L 02/26/99 630 20 500 76 111 80 120 MBS FLUORIDE by IC, Solids mg/Kg 02/18/99 14 0.50 12.5 ND 112 80 120 MSS FLUORIDE by IC mg/L 02/25/99 2.7 0.10 2.5 ND 108 80 120 MDS NITRATE as N by IC, Solids mg/Kg 02/18/99 14 0.50 13 ND 108 80 120 MRS NITRATE as N mg/L 02/25/99 2.8 0.10 2.5 ND 112 80 120 MBS NITRATE as N mg/L 02/26/99 3.9 0.10 2.5 1.0 116 80 120 MRS POND NITRITE as N by IC mg/L 02/18/99 2.7 0.10 2.5 ND 108 80 120 MBS NITRITE as N by IC mg/L 02/25/99 2.7 0.10 2.5 ND 108 80 120 MBS NITRITE as N by IC mg/L 02/26/99 2.7 0.10 2.5 ND 108 80 120 MBS SULFATE by IC. Solids mg/Kg 02/18/99 200 7.5 187.5 ND 107 80 120 M SULFATE by IC mg/L 02/24/99 40 0.50 38 ND 105 80 120 MBs,POND) X SULFATE by IC mg/L 02/26/99 7000 SO 3800 2900 108 80 120 MBS-9900171 ICP Metals. Total mg/L 02/25/99 Aluminum 2.0 0.050 2.0 ND 100 80 120 Antimony 0.45 0.050 0.50 NO 90.0 30 120 Arsenic 2.0 0.050 2.0 ND 100 80 120 Barium 1.9 0.0040 2.0 0.0096 94.5 80 12C Beryllium 0.048 0.0020 0.050 ND 96.0 80 12C Boron 0.95 0.050 0.50 0.30 130 80 120 Cadmium 0.041 0.0050 0.050 ND 82.0 80 120 Calcium 150 0.10 10 79 NC 80 120 Chromium 0.19 0.010 0.20 ND 95 0 80 120 Cobalt 0.44 0.010 0.50 ND 88.0 80 _26 Copper 0.24 0.0050 0.25 ND 96.0 80 120 Iron 1.0 0.050 1.0 0 056 94 .4 00 120 Lead 0.47 0.050 0.50 ND 94.0 84 120 Lithium 0.48 0.010 0.50 0.021 90.6 84 120 Magnesium 410 0.10 10 220 NC BC 120 Manganese 0.50 0.010 0.50 0.028 94 .4 80 120 Molybdenum 0.48 0.0050 0.50 0.010 94 .0 80 120 Nickel 0 44 0.010 0.50 ND 88.0 83 123 Potassium 17 1.0 10 4 .8 122 • 30 120 Selenium 2.3 0.10 2 0 ND 115 90 S:11COn 4 .9 0.50 5.0 NO 98.0 30 :2C Silver - 0 045 0.0050 0 050 NO 90 0 Sodium 900 3.0 10 210 NC 90 `20 Strontium 2.3 0.050 0 50 1 0 260 • 80 120 Thallium 0.34 0.20 0.50 NO 68 0 - BO :20 Tin 0.44 0.050 0.50 ND 88 0 80 120 Titanium 0.48 0.050 0 SO ND 96.0 80 120 Vanadium 0 48 0.010 0 50 ND 96 0 80 120 Zinc 0.45 0 0050 0.50 ND 90.0 80 120 QA/QC REPORT METHOD BLANK SPIKE SUMMARY PAGE: 4 CLIENT: TECH LINK 03/02/99 ORDERM: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE REF VAL %REC FLAG LOW UPPER MBS-9900170 ICP Metals, Total mg/L 02/25/99 Aluminum 1.8 0.050 2.0 ND 90.0 80 120 Antimony 0.44 0.050 0.50 ND 88.0 80 120 Arsenic 2.1 0.050 2.0 ND 105 80 120 Barium 1.9 0.0040 2.0 ND 95.0 80 120 Beryllium 0.048 0.0020 0.050 ND 96.0 80 120 Boron 0.38 0.050 0.50 ND 76.0 • 80 120 Cadmium 0.042 0.0050 0.050 ND 84.0 80 120 Calcium 8.3 0.10 10 ND 83.0 80 120 Chromium 0.19 0.010 0.20 ND 95.0 80 120 Cobalt 0.44 0.010 0.50 ND 88.0 80 120 Copper 0.24 0.0050 0.25 ND 96.0 80 120 Iron 0.90 0.050 1.0 ND 90.0 80 120 Lead 0.45 0.050 0.50 ND 90.0 80 120 Lithium 0.41 0.010 0.50 ND 82.0 80 120 Magnesium 9.1 0.10 10 ND 91.0 80 120 Manganese 0.45 0.010 0.50 ND 90.0 80 120 Molybdenum 0.46 0.0050 0.50 ND 92.0 80 120 Nickel 0.45 0.010 0.50 0.013 82.4 80 12C Potassium 8.3 1.0 10 ND 83-0 80 120 Selenium 2.3 0.10 2-0 ND 115 80 120 Silicon 4.2 0.50 5.0 ND 84.0 80 120 Silver 0.045 0.0050 0.050 ND 90.0 80 120 Sodium 1500 3.0 10 1400 NC 80 120 Strontium 0.44 0.050 0-50 ND 88.0 80 120 Thallium 0.40 0.20 0.50 NO 80.0 80 120 Tin 0.46 0.050 0.50 NC 92.0 80 120 Titanium 0.42 0.050 0.50 ND 94.0 80 120 Vanadium 0.46 0.010 0.50 ND 92.0 80 120 Zinc 0.44 0.0050 0.50 ND 88.0 80 120 --- QA/QC REPORT MATRIX SPIKE SUMMARY PAGE; 5 CLIENT: TECH_LINK 03/02/99 ORDERP: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE REF VAL tREC FLAG LOW UPPER • K902158-01B Cyanide, Weak/Acid Disso mg/L 02/26/99 0.13 0.010 0.20 0 65.0 70 130 5902158-08B Cyanide, Weak/Acid Disso mg/L 02/26/99 0.17 0.010 0.20 0 85.0 70 130 9902158-078 CHLORIDE by IC mg/L 02/26/99 160 2.0 50 110 100 70 130 9902158-078 FLUORIDE by IC mg/L 02/25/99 2.4 0.10 2.5 0.20 88.0 70 130 9902221-04D NITRATE as N mg/L 02/25/99 9.6 0.10 2.5 7.2 96.0 70 130 9902158-078 NITRITE as N by IC mg/L 02/25/99 2.9 0.10 2.5 ND 116 70 130 9902158-078 SULFATE by IC mg/L 02/26/99 6700 50 3800 2500 111 70 130 5902158-07A ICP Metals, Total mg/L 02/25/99 Aluminum 2.4 0.050 2.0 0.32 104 70 130 Antimony 0.45 0.050 0.50 ND 90.0 70 130 Arsenic 2.0 0.050 2.0 ND 100 70 130 Barium 1.9 0.0040 2.0 0.11 89.5 70 130 Beryllium 0.047 0.0020 0.050 ND 94.0 70 130 Boron 0.52 0.050 0.50 0.13 78.0 70 130 Cadmium 0.041 0.0050 0.050 ND 82.0 70 130 Calcium 420 0.10 10 420 NC 'C 130 Chromium 0.24 0.010 0.20 0.068 86.0 7C '.30 Cobalt 0.43 0.010 0.50 ND 86.0 70 130 Copper 0.25 0.0050 0.25 0.012 95.2 70 130 Iron 1.1 0.050 1.0 0.22 88.0 70 130 Lead 0.47 0.050 0.50 ND 94.0 70 130 Lithium 0.48 0-010 0.50 0.054 95.2 70 130 Magnesium 160 0.10 10 150 100 70 130 Manganese 0.44 0.010 0.50 ND 88.0 70 130 Molybdenum 0.48 0.0050 0.50 0.029 90.2 70 130 Nickel 0.44 0.010 0.50 ND 88.0 '0 13C Potassium 28 1.0 10 20 80.0 70 .3C Selenium 2.3 0.10 2.0 ND 115 0 13C Silicon 9.4 0.50 5.0 4 9 90 0 'C 130 Silver 0.040 0.0050 0.050 ND 80.0 70 130 Sodium 400 3.0 10 400 NC '0 13 Strontium 2.9 0.050 0.50 2 5 80.0 70 130 Thallium 0.36 0.20 0.50 ND 72.0 70 130 Tin 0.43 0.050 0.50 ND 86.0 70 130 Titanium 0.47 0.050 0.50 ND 94 .0 7G ... Vanadium 0.47 0.010 0.50 0 012 91.6 '0 -30 Zinc 0.44 0.0050 0.50 0 01! 8S 8 1'0 ` QA/QC REPORT MATRIX SPIKE SUMMARY PAGE: 6 CLIENT: TECH LINK 03/02/99 ORDERI: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT SPIKE REF VAL kREC FLAG LOW UPPER 5902158-01A ICP Metals, Total mg/L 02/25/99 Aluminum 1.9 0.050 2.0 ND 95.0 70 130 Antimony 0.48 0.050 0.50 ND 96.0 70 130 Arsenic 2.0 0.050 2.0 ND 100 70 130 Barium 2.1 0.0040 2.0 0.36 87.0 70 130 Beryllium 0.047 0.0020 0.050 ND 94.0 70 130 Boron 0.56 0.050 0.50 0.17 78.0 70 130 Cadmium 0.040 0.0050 0.050 ND 80.0 70 130 Calcium 560 0.10 10 560 NC 70 130 Chromium 0.24 0.010 0.20 0.061 89.5 70 130 Cobalt 0.40 0.010 0.50 ND 80.0 70 130 Copper 0.26 0.0050 0.25 0.012 99.2 70 130 Iron 0.84 0.050 1.0 ND 84.0 70 130 Lead 0.45 0.050 0.50 ND 90.0 70 130 Lithium 0.43 0.010 0.50 0.019 82.2 70 130 Magnesium 15 0.10 10 5.6 94.0 70 130 Manganese 0.42 0.010 0.50 ND 84.0 70 130 Molybdenum 0.47 0-0050 0.50 0.020 90-0 70 130 Nickel 0.40 0.010 0.50 ND 80.0 70 130 Potassium 19 1.0 10 11 80.0 70 130 Selenium 2.3 0.10 2.0 ND 115 70 130 Silicon 22 0.50 5.0 18 80.0 70 130 Silver 0.043 0.0050 0.050 ND 86.0 70 130 Sodium 1500 3.0 10 1500 NC 70 130 Strontium 2.9 0.050 0.50 2 S 80.0 70 130 Thallium 0.42 0.20 0.50 ND 84.0 70 130 Tin 0.43 0.050 0.50 ND 86.0 70 130 Titanium 0.46 0.050 0.50 ND 92.0 70 130 Vanadium 0.49 0.010 0.50 0.041 89.8 70 130 zinc 0.42 0.0050 0.50 ND 84 C 70 130 QA/QC REPORT -_• SAMPLE DUPLICATE SUMMARY PAGE: 7 CLIENT: TECH LINK 03/02/99 ORDER#: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT REF VAL VRPD FLAG UPPER D902158-01B Cyanide, Weak/Acid Disso mg/L 02/26/99 0.0 0.010 0 NC 20 D902158-088 Cyanide, Weak/Acid Disso mg/L 02/26/99 0.0 0.010 0 NC 20 9902158-078 CHLORIDE by IC mg/L 02/26/99 110 2.0 110 0.0 20 9902158-078 FLUORIDE by IC mg/L 02/25/99 0.19 0.10 0.20 NC 20 9902158-078 NITRATE as N mg/L 02/25/99 1.3 0.10 1.2 8.00 20 9902158-078 NITRITE as N by IC mg/L 02/25/99 0.12 0.10 ND NC 20 9902158-078 SULFATE by IC mg/L 02/26/99 2500 SO 2500 NC 20 D902158-07A ICP Metals, Total ng/L 02/25/99 Aluminum 0.32 0.050 0.32 0.0 20 Antimony ND 0.050 ND NC 20 Arsenic ND 0.050 ND NC 20 • Barium 0.11 0.0040 0.11 0.0 20 Beryllium ND 0.0020 ND NC 20 Boron 0.13 0-050 0.13 0.0 20 Cadmium ND 0.0050 ND NC 20 Calcium 420 0.10 420 0.0 20 Chromium 0.063 0.010 0.068 NC 20 Cobalt ND 0.010 ND NC 20 Copper 0.010 0.0050 0.012 NC 20 Iron 0.23 0.050 0.22 4.44 20 Lead ND 0.050 ND NC 2. Lithium 0.055 0.010 J 354 1 .83 __ Magnesium 150 0.10 150 0.0 2Q Manganese ND 0.010 ND NC 20 Molybdenum 0.025 0.0050 0.029 NC 20 Nickel ND 0.010 AND NC 20 Potassium 20 1.0 20 0.0 2C Selenium ND 0.10 ND NC 2C Silicon 4.9 0.50 4 .9 0.0 23 Silver ND 0.0050 ND NC 23 Sodium 400 3.0 400 0.0 23 Strontium 2.5 0.050 2.5 3.0 2.. Thallium ND 0.20 ND NC 2- Tin ND 0.050 ND NC 20 Titanium ND 0.050 ND NC 20 Vanadium ND 0.010 0 012 NC 2{: Zinc 0.010 0.0050 0 011 NC 2G QA/QC REPORT SAMPLE DUPLICATE SUMMARY PAGE: 8 CLIENT: TECH_LINK 03/02/99 ORDERM: 9902158 QC SPECS SAMPLE ID ANALYTE UNITS ANAL DATE RESULT LIMIT REF VAL FRPD FLAG UPPER D902158-01A ICP Metals, Total sg/L 02/25/99 Aluminum ND 0.050 ND NC 20 Antimony ND 0.050 ND NC 20 Arsenic ND 0.050 ND NC 20 Barium 0.36 0.0040 0.36 0.0 20 Beryllium ND 0.0020 ND NC 20 Boron 0.17 0.050 0.17 0.0 20 Cadmium ND 0.0050 ND NC 20 Calcium 560 0.10 560 0.0 20 Chromium 0.063 0.010 0.061 3.23 20 Cobalt ND 0.010 ND NC 20 Copper 0.013 0.0050 0.012 NC 20 Iron ND 0.050 ND NC 20 Lead ND 0.050 ND NC 20 Lithium 0.020 0.010 0.019 NC 20 Magnesium 5.6 0.10 5.6 0.0 20 Manganese ND 0.010 ND NC 20 Molybdenum 0.022 0.0050 0.020 NC 20 Nickel ND 0.010 ND NC 20 Potassium 11 1.0 11 0.0 20 Selenium ND 0.10 ND NC 2r Silicon 1e 0.50 1e c.c 20 Silver ND 0.0050 ND NC 20 Sodium 1500 3.0 1500 0.0 20 Strontium 2.5 0.050 2.5 0.0 20 Thallium ND 0.20 ND NC 20 Tin ND 0.050 ND NC 20 Titanium ND 0.050 ND NC 20 Vanadium 0.043 0.010 0.041 NC 20 Zinc ND 0.0050 ND NC 20 Date: 15-Jun-99 Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401.5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Joby Adams CGRS P.O.Box 1002 Fort Collins, CO 80525 Phone: Fax: 1-970493-7986 Work Order: 9906044 Project: 2755aa Dear Joby Adams, Barringer Laboratories, Inc. received 1 sample on 05/26/99 for the analyses presented in the following report. There were no problems with the analyses and all data for associated QC met EPA or laboratory specifications except where noted in the Case Narrative. If you have any questions regarding these tests results, please feel free to call. Steve Mustain Inorganic Laboratory Manager 1/2.124 Cl ence Lott Project Review Date: 15-Jun-99 Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (3031277-1687 Fax(301)277-1689 CLIENT: CGRS Project: 2755aa Work Order Sample Summary Lab Order: 9906044 Date Received: 5/26/99 Lab Sample ID Client Sample ID Tag Number Matrix Collection Date _ 9906044-01A Pond Aqueous 5/26/99 9906044-01B Pond Aqueous 5/26/99 9906044-01C Pond Aqueous 5/26/99 Page 1 Date: 15-Jun-99 Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401.5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 CLIENT: CGRS Project: 2755aa CASE NARRATIVE Work Order: 9906044 All reported values in this report have been rounded to the correct number of significant figures. All calculations have been performed before applying significant figures, therefore, not all calculations may be reproducible with the results printed in this report. Analytical Comments for method EPA 300.0,sample 9906044-0IB: The sample required a dilution to accurately determine sulfate. Page 1 Date: 15-Jun-99 Barringer Laboratories, Inc. 15000 W 6th Avewe Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (30.3)277-1687 En(303)277.1689 Client: CGRS Client Sample ID: Pond Lab Order: 9906044 Tag Number: Project: 2755aa Collection Date: 05/26/1999 Lab ID: 9906044-01A Matrix: Aqueous Analyses CAS# Result Limit Qual Units DF Prepped Analyzed Batch ANTIMONY,TOTAL Method:EPA 200.9 Analyst: AW Antimony 7440-36-0 <0.006 0.006 mg/t. 1 05/28/1999 06/09/1999 P98 ICP METALS,TOTAL Method:EPA 200.7 Analyst: SLM Aluminum 7429-90-5 4.4 0.05 mg/L 1 05/28/1999 06/02/1999 P99 Arsenic 7440-38-2 <0.1 0.1 mg/L 1 05/28/1999 06/02/1999 P99 Barium 7440-39-3 0.096 0.02 mg/L 1 05/28/1999 06/02/1999 P99 Beryllium 7440-41-7 <0.004 0.004 mg/L 1 05/28/1999 08/02/1999 P99 Boron 7440-42-8 0.21 0.1 mg/L 1 05/28/1999 06/02/1999 P99 Cadmium 7440-43-9 <0.005 0.005 mg/L 1 05/28/1999 06/02/1999 P99 Calcium 7440.70.2 100 0.2 mg/L 1 05/28/1999 06/02/1999 P99 Chromium 7440-47-3 <0.01 0.01 mg/L 1 05/28/1999 08/02/1999 P99 Cobalt 7440-48-4 <0.01 0.01 mg/L 1 05/28/1999 06/02/1999 P99 Copper 7440-50-8 <0.01 0.01 mg/L 1 05/28/1999 06/02/1999 P99 Iron 7439-89-6 5.0 0.1 mg/L 1 05/28/1999 06/02/1999 P99 Load 7439-92-1 <0.05 0.05 mg/L 1 05/28/1999 06/02/1999 P99 Lithium <0.02 0.02 mg/L 1 05/28/1999 06/02/1999 P99 Magnesium 7439-95-4 52 0.1 mg/L 1 05/28/1999 06/02/1999 P99 Manganese 7439-96-5 0.56 0.005 mg/L 1 05/28/1999 06/02/7999 P99 Molybdenum <0.01 0.01 mg/1_ 1 05/28/1999 06/02/1999 P99 Nickel 7440.02.0 <0.04 0.04 0 mg/L 1 05/28/1999 06/02/1999 P99 Potassium 7440-09-7 <5 5 9 mg/L 1 05/28/1999 06/02/1999 P99 Selenium 778249.2 0.11_ (P.�0 mg& 1 05/28/1999 06/02/1999 P99 — Silver 7440-22-4 <0.01 0.01 mg/L 1 0528/199906/02/1999 P99 Sodium 7440-23.5 130 1 mg/L 1 05/28/1999 06/02/1999 P99 Strontium 1.1 0.005 mg/L 1 05/28/1999 06/02/1999 P99 Tin 7440315 <0.1 0.1 mg/L 1 05/28/1999 06/02/1999 P99 Titanium 7440-32-6 0.078 0.01 mg/L 1 05/28/1999 06/02/1999 P99 Vanadium 7440-62-2 <0.01 0.01 mg/L 1 05/28/1999 08/02/1999 P99 Zile 7440-66.6 <0.02 0.02 mg/L 1 05/28/1999 06/02/1999 P99 MERCURY,TOTAL Method:EPA 2451 Analyst: AW Mercury • 7439-97-6 <0.0002 0.0002 mg/L 1 06/04/1999 A402 THALLIUM,TOTAL Method:EPA 200.9 Analyst: AW Thallium 7440-28-0 <0.002 0.002 mg/L 1 05/28/1999 08/06/1999 P98 Qualifiers: ND-Not detected at the reporting limit S-Spike recovery outside accepted recovery limits 1-Anslyte detected below quandtadon limits Y-Unspiked sample>4 times amount spiked E•Value above quantitation range R-Analyte detected in the associated method blank R-RPD outside accepted recovery limits Z•Sample> I0 times blank result Page 1 Date: 15-Jun-99 Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden.Colorado 80401-5047 (500)654.0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Client Sample ID: Pond Lab Order: 9906044 Tag Number: Project: 2755aa Collection Date: 05/26/1999 Lab ID: 9906044-01B Matrix: Aqueous Analyses CAS# Result Limit Qual Units DF Prepped Analyzed Batch ALKALINITY Method:SM 2320B Analyst: TSB Alkalinity,Carbonate(As CaCO3) <5 5 mg/L 1 06/02/1999 A412 ANTIMONY, DISSOLVED Method:EPA 204.2 Analyst: AW Antimony 7440-36-0 <0.006 0.006 mg/L 1 06/09/1999 A399 ICP METALS,DISSOLVED Method:EPA 200.7 Analyst: SLM Aluminum 7429-90-5 2.6 0.05 mg/L 1 06/10/1999 A396 Arsenic 7440-38-2 <0.1 0.1 mg/L 1 06/10/1999 A396 Barium 7440-39-3 0.091 0.02 mg/L 1 06/10/1999 A396 Beryllium 7440.41.7 <0,004 0.004 mg/L 1 06/10/1999 A396 Boron 7440-42-6 0.21 0.1 mg/L 1 06/10/1999 A396 Cadmium 7440-43-9 <0.005 0.005 mg/. 1 06/10/1999 A396 Calcium 7440-70-2 110 0.2 mg/L 1 06/10/1999 A396 Chromium 7440-47-3 <0.01 0.01 mg/1. 1 08/10/1999 A396 Cobalt 7440-484 <0.01 0.01 mg/L 1 06/10/1999 A396 Copper 7440-50-8 <0.01 0.01 mg/L 1 06/10/1999 A396 iron 7439-89-6 1.8 0.1 mg/L I 06/10/1999 A396 Lead 7439-92-1 0.052 0.05 mg/I. 1 06/10/1999 A396 Lithium 0.20 0.02 mg/L 1 06/10/1999 A396 Magnesium 7439-95-4 63 0.1 mg/I. 1 06/10/1999 A396 Manganese 7439-96-5 0.58 0.005 mg/L 1 06/10/1999 A396 Molybdenum <0.01 0.01 mg/L 1 06/10/1999 A396 Nickel 7440-02-0 <0.04 0.04 mg/L 1 06/10/1999 A396 Potassium 7440-09-7 <5 5 mg/L 1 06/10/1999 A396 Selenium 7782-49-2 <0.1 0.1 mg/L 1 06/10/1999 4396 Silver 7440.22.4 <0.01 0.01 mg/L 1 06/10/1999 A396 Sodium 7440-23-5 120 1 mg/L 1 08/10/1999 A396 Strontium 1.0 0.006 mg/L 1 06/10/1999 A396 Tin 7440.31.5 <0.1 0.1 mg/L 1 06/10/1999 A396 Titanium 7440-32-6 0.012 0.01 mg/L 1 06/10/1999 A396 Vanadium 7440-62-2 <0.01 0.01 mg/L 1 06/10/1999 A396 Zinc 7440-66-6 <0.02 0.02 mg/L 1 06/10/1999 A396 ION CHROMATOGRAPHY,TOTAL Method:EPA 300.0 Analyst: SSM Chloride 16887-00-6 59 1 mg/L 1 05/27/1999 A409 Fluoride 16984-48-8 0.76 0.1 mgt 1 05/27/1999 A409 Nitrogen,Nitrate(As N) 7727-37-9 9.8 0.1 mg/L 1 05/27/1999 A409 Nitrogen,Nitrite 7727-37-9 <0.1 0.1 mg/L 1 05/27/1999 A409 Sulfate 14808.79-8 320 3 mg/L 3 05/27/1999 4409 MERCURY, DISSOLVED Method:EPA 245.1 Analyst: AW Mercury 7439-97-6 0.00022 0.0002 mg/L 1 06/0411999 A402 Qualifiers: ND•Not detected as the reporting limit S-Spike recovery outside accepted recovery limits -- --_ I-Analyte detected below quantitatioo limits Y-Unspikcd sample>4 times amount spiked E-Value above quadtintioa range B-Analyte detected in the associated method blank R-RPD outside accepted recovery limits Z-Sample>10 times blank result Page 2 Date: 15-Jun-99 K .Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401.5047 (800)654-0.506 (303)277.1687 Fax(303)277-1689 Client: CGRS Client Sample ID: Pond Lab Order: 9906044 Tag Number: Project: 2755aa Collection Date: 05/26/1999 Lab II): 9906044-OIB Matrix: Aqueous Analyses CAS# Result Limit Qual Units DF Prepped Analyzed Batch THALLIUM, DISSOLVED Method:EPA 2792 Analyst: AW Thallium 7440-28-0 <0.002 0.002 mgt. 1 06/07/1999 A404 Qualifiers: ND-Not detected at the reporting limit S-Spike recovery outside accepted recovery limits 1-Analytc detected below quandtation limits Y•Unspiked sample>4 dimes amount spiked E-Value above quanciitation range B-Analytc detected In the associated method blank R-RID outside accepted recovery limas 2-Sample>10 times blank result Page 3 Date: 15-Jun-99 kpC--- Barringer Laboratories, Inc. 15000 W6th Avenue Suite 300 Golden,Colorado 80401.5047 (800)654-0506 (303)277.1687 Fax(303)277•)689 Client: CGRS Client Sample ID: Pond Lab Order: 9906044 Tag Number: Project: 2755aa Collection Date: 05/26/1999 Lab ID: 9906044-0IC Matrix: Aqueous Analyses CAS# Result Limit Qual Units DF Prepped Analyzed Batch TOTAL PHOSPHORUS Method:EPA 365.1 Analyst: TMS Total Phosphorus(As P) 7723-14-0 0.11 0.05 mg/L 1 06/02/1999 A411 ,1ua1fias: ND•Not detected at the repotting limit S•Spike recovery outside accepted recavay limits 1-Analytc detected below quantitatioa limits Y-Unspiked sample>4 times amount spiked E•value above quanutation range B•Analyte detected in the associated method blank R-RIO outside accepted recovery limits 2-Sample>10 times blank result Page 4 . Barringer Laboratories, Inc.p ..._ I- Q 15000 lV 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Date: 15-Jun-99 C t v CLIENT: CGRS Work Order: 9906044 QC SUMMARY REPORT n Project: 2755aa Method Blank c Batch ID: A409 SegNo:4324 Method:EPA 300.0 Prep Date: Analysis Date:5/27/99 SamplalD: MBLK Matrix:Aqueous Units:mg/_ Analyst:SSM Analyse Result *2 sigma Limit SpikeVal SpikeReNal %REC Lowtimd Hightimit DupRelVal *2 sigma RPD/RER RPDLImi1 Duel i = Chloride ND 1 Fluoride ND 0.1 Nitrogen,Nitrate(As N) ND 0.1 r Nitrogen.Nitrite NO 0.1 i Sulfate ND 1 [ 5 t r t t t r r i Qualifiers: ND-Not detected at the reporting limit R-RPD above accepted limit Y-Unspiked sample>4 times amount spiked 1-Analyze detected below quaatitarion limits X-Duplicate sample(s)<5 times PQL B-Analyte detected in the associated method blank Page / E- Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample>10 limes blank result c C Barringer Laboratories, Inc. 1S000 W 6th Avenue Suite 300 Golden,Colorado 80401.5047 (800)654-0306 (303)277-1687 Fax(3031277-1689 Date: 15-Jun-99 cE i- t CLIENT: CGRS t work order: 9905044 QC SUMMARY REPORT r Project: 2755aa Method Blank t Batch ID: A396 SegNo:4205 Method:EPA 200.7 Prep Date: Analysts Date:6110/99 Sample ID: MBLK Mahlx:Aqueous Units:mg/L Analyst SLM Analyte Result t2 sigma Limit SpikeVal SpikeReNel %REC LowLimlt Hightlmit DupReNal t 2 sigma RPD/RER RPDL'rnit Qua] Aluminum ND 0.05 Arsenic ND 0.1 Barium ND 0.02 Beryllium ND 0.004 Baron ND 0.1 Cadmium ND 0.005 Calcium ND 0.2 Chromium ND 0.01 Cobalt ND 0.01 i Copper ND 0.01 Iran ND 0.1 Lead ND 0.05 Lithium ND 0.02 Magnesium ND 0.1 Manganese ND 0.005 Molybdenum ND 0.01 Nickel ND 0.04 Potassium ND 5 Selenium ND 0.1 Silver ND 0.01 Sodium ND 1 Strontium NO 0.005 Tin ND 0.1 Titanium ND 0.01 Vanadium ND 0.01 Qualifiers: NO-Not detected at the reporting limit R•RFD above accepted limit Y-Unspiked sample>d times amount spiked I-Analyte detected below quaodtatoe limits X-Duplicate sample-45)e 5 times PQL B-Aoalyte detected in the associated method blank Page 2 B•Value above quantiution range S-Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5017 (800)630-0506 (303)277-1687 Pa(303)277.1689 Date: 1 S•'Int-99 1 E u CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 n Project: 2755aa Method Blank C Zinc ND 0.02 t 2 ( r f t t t f l I 1 I i i i Qualifiers: ND-Not detected at the reporting limit R-RPD above accepted limit V•Unspiked sample>4 times amount spiked 1-Malyte detected below quootitatioo bmits X-Duplicate samples)<5 limes PQL B•Malyte detected in the associated method blank Page 3 E.-Value above quaotitatien range S-Spike recovery outside accepted recovery limits Z-Sampte>10 times blank result • I . r Barringer Laboratories, Inc. (5000 IV CM Avenue Suire 300 Golden,Colorado 80401.5047 (800)651-0506 (303)277-1687 Fax(303)277.1689 Date: 15-Jun-99 C t. I, t CLIENT: CORE QC SUMMARY REPORT 1-4 Work Order: 9906044 r Project: 2755aa Method Blank c Batch ID: P99 SegNo:4283 Method:EPA 200.7 Prep Dale:5122199 Analysis Date:6/2/ 9 Sample ID: MB-99 Matrix:Aqueous Units:mg/L Analyst:SLM Analyte Result :2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HlghLimit DupReNal ±2 sigma RPD/RER RPDLImit Qua; j Aluminum ND 0.05 Arsenic ND 0.1 c r Barium ND 0.02 Beryllium ND 0.004 r Boron ND 0.1 c Cadmium ND 0.005 5 Calcium NO 0.2 S Chromium ND 0.01 ' r Cobalt ND 0.01 t Copper ND 0.01 Iron ND 0.1 Lead ND 0.05 Lithium ND 0.02 Magnesium ND 0.1 Manganese ND 0.005 Molybdenum ND 0.01 Nickel ND 0.04 Potassium ND 5 t c Selenium ND 0.1 t Silver ND 0.01 r Sodium ND 1 Strontium ND 0.005 Tin ND 0.1 k Titanium ND 0.01 Vanadium ND 0.01 r Qualifiers: ND-Not detected at the reporting limit R-RPD above accepted limit Y-Unspiked sample>4 times amount spiked r 1•Analyte detected below quaotitation Limits X-Duplicate sample(s)<5 times PQL B-Analyte detected in the associated method blank Page 4 B-Value above quan6tation range S-Spike raovery outside accepted recovery limits Z-Sample> 10 times blank result C Barringer Laboratories, Inc. t 15000 W 6th Avenue Suite 300 Golden,Colorado 80401.5047 (800)654-0506 (303)277.1687 Fax(J03)277-1689 Date: 15-Jun-99 i t t CLIENT: CGRS QC SUMMARY REPORT i Work Order: 9906044 Project: 2755aa Method Blank t Zinc ND 0.02 t t r r i l i i t i i Qualifiers: ND-Not detected at the reporting limit R-RPD above accepted limit V-lJnspiked sample>4 times amount spiked 1-Aoalytc detected below quantitation limits X-Duplicate sampk(s)<5 tines PQL B-Aoalyte detected in the associated method blank Page 5 E-Value above quantitatioa range S-Spikerecovey outside accepted recovery limits Z-Sample> ID times blank result t t BHrrarringer Laboratories, Inc. 15000W 6th Ave.,,,. Suite 300 Golden, Colorado 80401.5047 (800)654-0506 (303)277.1687 Fax O03)277-1689 Date: 15-Jun-99 f t CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Method Blank Batch ID: PAU SegNo:4955 Method:EPA 965,1 Prep Date: Analysis Date:612/99 Sample ID: MILK Matrix:Aqueous Units:mg&. Analyst:TMS Analyte Result *2 sigma Limit SpikeVal SpikeReiVal %REC LowLimit Highlimit DupReNal t 2 sigma RPD/RER RPDlimit Dual Total Phosphorus(As P) ND 0.05 Qualifiers: ND-Not detected at the reporting limit R-RPD above accepted limit Y-Unspiked sample>4 times amount spiked 1-Analyze detected below nomination limits X-Duplicate samples)<S times PQL B-Analyze detected in the associated method blank Po8e 6 E-Value above quaniimlion range S-Spike secovesy outside accepted mcovery limits 2.-Sample>10 times blank result s t Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (3031277-1687 Fu(303)277-1689 Date: 15-Jun-99 s r CLIENT: CGRS o Order: 9906O44 QC SUMMARY REPORT '.Wo Project: 2755aa Method Blank Batch ID: P96 Se0No:4265 Method:EPA 200.9 Prep Date:6/28/99 Analysis Date:M/99 Sample ID: MB-96 Matrix:Aqueous Units:mg/L Analyst:AW Analyte Result t 2 sigma Limit SpkeVal SpikeReNal %REC LowLImlt HIghLImit DupRelVal t2 sigma RPD/RER RPDLImit Qual Thallium ND 0.002 Qualifiers: ND-Not detected at the reporting limit R-RPD above accepted limit Y-Urupikcd sample>4 times amount spiked J.Analyze detected below quauutauon bmits X-Duplicate sample(s)<5 tines PQL B-Analyse detected in the associated method blank Page 7 E-Value above quantitatiun range S-Spike recovery outside accepted recovery limits 2-Sample> 10 times blank result L c i Barringer Laboratories, Inc. 15000W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654.0506 (303)277-1687 Fu(303)277-1689 Date; 15-Jun-99 i I t CLIENT: Order: 9 RS QC SUMMARY REPORT I Work Project: 2755aa Method Blank - Batch ID: P98 SegNo:4211 Method:EPA 200.9 Prep Date:5129199 Analysis Date:8/9/99 Sample ID: MB-98 Matrix:Aqueous Units:mg/L Analyst:AW Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLlmit HlghUmil DupRefVal x2 sigma RPD/RER RPOLImit Oval 1 Antimony ND 0.006 E r r E C i r t I Qualifiers: ND-Not detected at the rcportiog limit R-RPD above accepted Limit Y-Umpiked sample>4 limes amount spiked 1-Analyte detected below quanlisatioa limits X-Duplicate sample(s)<5 times PQL B-Analyte detected in the associated method blank Page 8 E-Value above quanlitatioa range S-Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result C Barringer Laboratories, Inc. . I 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 ( ) ~(800)65<-0506 (303)277-1687 Pax 303 277.1689 Date: 15-Jun-99 u I u :VENT: CGRS 'York Order: 9966044 QC SUMMARY REPORT i 'role-et: 2755aa Method Blank -' latch ID: A399 SegNo:4216 Method:EPA 204.2 Prep Date: Analysis Date:6/9/99 ;ample ID; MBLK Matrix Aqueous Unils:ma)L Analyst:AW Inalyte Result *2 sigma Limit SpikeVal SplkeReNal %REC Loy imit RlgtiLimit DupReNal m 2 sigma RPDIRER RPDLImil Qual 1 7 7 tntimony ND 0.006 5' 6 IT 7 r I a C 7 x E 7 IT u t, a L R r- 0 a u -I Qualifiers: ND-Not detected at the reporting limit R-RPD above accepted limit Y-Unsoiled sample>4 times amount spiked Cr 1-Analyte detected below quantitation limits X-Duplicate sample(s)c S times PQL B-Analyte detected in the associated method blank Page 9 B-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample> 10 limes blank result f Barringer Laboratories, Inc. 15000 IV 6th Avenue Suite 300 Colder, Colorado 80401-5047 (800)654-0506 (303)777-1687 Fax(303)177.1689 Date: 15-Jun-99 i r l LENT: CGRS QC SUMMARY REPORT Work Order: 9906044 ?reject: 2755aa Sample Duplicate 3atch ID: A412 SegNo:4368 Method:SM 23208 Prep Date: Analysis Date:6t21339 Sample ID: 992213.1 DUP Metric Aqueous Units:mg&L • 3Analyst:TSB knatyte Result x2 sigma Limit Spit eVal SpikeReNal %REC LowLImit Hight-end DupReNal ±2 sigma RPD/RER RPOLImIt Dual Nkalinity,Carbonate(As CaCO3) ND 5 ND 0 20 Qualifiers: ND-Not detected at the reporting Limit R-RPD above accepted Limit Y-Dospiked sample>4 times amount spiked 1-Analyte detected below quantitation limits X•Duplicate samples)<5 times PQL B-Aaalyte detected in the associated method blank Page 10 E-Value above quantitation range S-Spike recovery outside accepted recovery limits 2-Sample> I D times blank result i I C Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)6340506 (303)277-1687 Fax(303)277.1689 Date: 15-Jun-99 kJ t c, MIENT: CGRS Work Order: 9906044 QC SUMMARY REPORT t 'roJect: 2755aa Sample Duplicate e latch ID: A409 SegNo:4.327 Method:EPA 300.0 Prep Date: Analysts Date:5/27/99 Sample ID: 992130.1 DUP Maldr•Aqueous Units:mg/.. Analyst.SSM bnatyte RestA132 sigma Lime SpikeVel SpikeReNal %AEC Lmvtlmlt HIghLimlt DupReNal 32 sigma RPD/RER RPDLimil Coal 7 :hloride 8.2 1 8.3 1 20 ruorkfe 0.20 0.1 0.21 1 20 [ r Nitrogen,Nitrate(As N) 0.19 0.1 0.19 0 20 'halogen,Nitrite ND 0.1 ND 0 20 7 Sulfate 16 I 15 6 20 C 7 I: C I C I P [ Qualifiers: ND-Not duetted mho reporting limit R•RPD above accepted limit Y-Uospikcd sample>4 times amount spiked [ J-Aoalyte detected below quantitation limits X-Duplicate sample(%)<5 times PQL 0-Analyse detected in the associated method blank Page I E-Value above quantimsion range S-Spike recovery outside accepted recovery limits Z•Sample> 10 times blank result Barringer Laboratories, Inc. 15000 W6rh Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Date: 15-Jun-99 f r 2LIENT: CGRS '1. Fork Order: 99O6O44 QC SUMMARY REPORT 'reject: 2755aa Sample Duplicate c etch ID: A396 SecNo:4198 Method:EPA 2003 Prep Date: Analysis Date:6/10/99 ameba ID: 9906044-01B OUP Matrix:Aqueous Units:mgh- Analyst SUN nalyte Result s2 sigma Limit S keVal S IkeReNal %AEC Lo'M3mit HI Limit Du ReNal t2 sigma N 0 P P Oh P RPD/RER RPOL3mrt Quell luminum 2.6 0.05 2.6 0 20 rsenic ND 0.1 ND 0 20 arium 0.090 0.02 0.091 0 20 erylllum ND 0.004 ND 0 20 coon 0.21 0.1 0.21 1 20 admlum ND 0.005 ND 0 20 alcium 110 0.2 110 0 20 hromium ND 0.01 ND 0 20 bait ND 0.01 ND 0 20 upper ND 0.01 ND 0 20 m 1.8 0.1 1.8 0 20 tad ND 0.05 0.052 200 20 X thium 0.021 0.02 0.20 163 20 X agneslum 53 0.1 53 0 20 anganese 0.58 0.005 0.58 0 20 clybdenum ND 0.01 ND 0 20 circa ND 0,04 ND 0 20 ttasslum ND 5 ND 0 20 denium ND 0.1 ND 0 20 ver NO 0.01 ND 0 20 ' idl um 120 I 120 1 20 •ontlum 1.0 0.005 1.0 0 20 t ND 0.1 ND 0 20 anium 0.015 0.01 0.012 18 20 -j nadlum ND 0.01 ND 0 20 C 1 D uadfers: ND-Not detected at the reporting limit R-RPO above accepted limit Y-Um-piked sample>4 times amount spiked -0 .1 -Analyte detected below quaotitatton limits X-Duplicate sample(s)<5 times PQL 0-Analyte detected in the associated method blank Page 12 F. E-Value above quantiudon tango S-Spike recovery°aside accepted recovery limits 1-Sample> 10 times bLank result UI Barringer Laboratories, Inc. 15000 1V 6tli Avenue Stare 300 Golden,Colorado 80401.5047 (800)6544)506 (303)277.1687 Fax(303)277-1689 Date: 15-Jun-99 CLIENT: CGRS Work Order: 9906044 QC SUMMARY REPORT Project: 2755aa SarnpIc Duplicate Zinc ND 0.02 ND 0 20 QualiDaess: ND-Net detected at the reporting limit R -RPD above accepted limit Y -Uotpiked sample>4 times amount spiked 1-Analyze detected below quantitatioo limits X-Duplicate sample(a)<5 times PQL B-Arulyte detected iv the associated method blank Page 13 E-Value above quaotitauoo range S-Spike recovery outside accepted recovery limits Z- Sample> 10 times blank suull Barringer Laboratories, Inc. 15000 lV 61h Avenue Srirle 300 Golden, Colorado 80401.5047 (800)654.0506 (303)277-16-87 Fax (303)277-1689 Date: 1S-Jun-99 CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Sample Duplicate Batch ID: P99 SeqNo:4287 Method:EPA 200.7 Prep Date:5128!99 Analysis Date:6/2/99 Sample ID: 992215.1 DUP Matrix Aqueous Units:mgfL Analyst:SLM Analyte Result ±2 slgna Limit SpikeVal SpikeRelVal %REC Lowtimil HigttUmit DupfletVal ±2 sigma RPD/FIER RPDLimst Dual Aluminum ND 0.02 ND 0 20 Arsenic ND 0.05 ND 0 2D Barium 0.16 0.01 0.15 2 20 Beryiiium ND 0.002 ND 0 20 Boron ND 0.05 ND 0 20 Cadmium ND 0.002 ND 0 20 Calcium 13 0.1 13 1 20 Chromium ND 0.00.5 ND 0 20 Cobalt ND 0.005 ND 0 20 Coppor ND 0.005 ND 0 20 Iron 0.053 0.05 0.070 28 20 X Lead ND 0.02 ND 0 20 Lithium NO 0.01 ND 0 20 Magnesium 8.8 0.05 8.7 1 20 Manganese 0.0084 0.002 0.0076 11 20 Molybdenum ND 0.005 ND 0 20 Nickel ND 0.02 ND 0 20 Potassium 2.9 2 2.8 4 20 Selenium ND 0.05 ND 0 20 Silver ND 0.005 ND 0 20 Sodium 5.7 0.5 5.6 2 20 Strontium 0.13 0.002 0.13 1 20 Tin ND 0.05 ND 0 20 Titanium ND 0.006 NO 0 2D Vanadium ND 0.005 ND 0 20 Qualifiers: ND-Not detected at the reporting Limit R-RPD above accepted lirml Y-Urupiked sample>4 times amount spitted J-Analyte detected below qua nlitalion limits X-Duplicate samplo(sj c S three PQL B -Aoalyie detected in the associated method blank rage 14 B-Value above quantitation range S-Spike rmovery outside accepted recovery limits Z-Sample> l0 times blank result Barringer Laboratories, Inc. 13000 W 601 Avenue Suite 300 Golden,Colorado 80401-5047 (800)634.0506 (303)277-1687 Fax(30J)277-1689 Date: 15-.hut-99 1 CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Sample Duplicate Zinc ND 0.01 ND 0 20 Qualifiers: NO-Not detected at the reporting limit R-RPD above accepted limit Y-Unspiked sample>4 times amount spiked 1-Analyze detected below quantization limits X-Duplicate samples)<5 times PQL B-Aaalyte detected in the associated method blank Page 15 E-Value above quantization range S•Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result Barringer Laboratories, Inc. 15000 IV 6sh Ave,2tre Smite 300 Golden, Colorado 80401-5047 (800)654-0506 (303)277.1687 Fax(303)277-1689 Date: 15-Jun-99 1 CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Sample Duplicate latch ID: A411 SegNo:4360 Method:EPA 365.1 Prep Date: Analysis Dally-6/2/99 Sample ID: 992220-2 DUP Matri,c Agu eau s Units:mg/L Analyst:'MS Analyze Result *2 sigma Limit SpikeVal Sp CeReNVal %REC LowAimit NighLimil DupReiVal t 2 sigma RPD/RER RPDLim)t Dual Total Phosphorus(As P) 0.16 0.05 0.19 13 20 Qualifiers: ND-Not detected at the reporting Limit R-RPD above accepted limit Y -Unspikcd sample>4 times amount spiked 1-Analyte detected below quantiudoo limits X-Duplicate sampte(s)<5 times PQL B-Analyte desuted in the astoeiated method blank Page 16 13•Value above quanriution range S-Spike recovery outside accepted recovery limits Z-Sarnpk> 10 times blank result i , Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden.Colorado 80401-5047 (800)654-0506 (303)277.1687 Fax(303)277-1689 Date: 15-Jun-99 t CLIENT: CGRS Work Order: 9906044 QC SUMMARY REPORT Project: 2755aa Sample Duplicate Batch ID: P9t1 SeqNo:4261 Method:EPA 279.2 Prep Date:5)28199 Analysis Data:616199 Sample ID: 992215.9 DUP Matrix:Aqueous Units:trig& Analyst:AW Analyte Result t 2 sigma Limit SpikeVal SpikeReNai %REC LowLimit HigtiLWnit DupRelVal ±2 sigma RPD/RER RPDLlm4 Mal Thallium ND 0.001 ND 0 20 Qualifiers: ND-Na detected at the reporting limit R-RPD above accepted limit Y-Uospiked sample>4 times amount spiked J-Analyte detected below quantization limits X-Duplicate sample(s)<5 times PQL B-Aaaiyte detected in the associated method blank Page 17 B-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample>10 times blank result Barringer Laboratories, Inc. 15000 1S'6rh Avenue Sully 300 Golder,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Date: 15-Jun-99 1 CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Sample Duplicate Batch ID: P9B SogNo:4227 Method:EPA 200.9 Prep Dale:5/28/99 Analysis Data:619199 Sample ID: 992215-3 DUP Matrix Aqueous Units:mg/L Analyst:AW Analyls Result s2 sigma Limit Sp'keVai SpikeRelVel %REC LowLimit HighLlmlt DupReNet ±2 sigma RPD/FIER RPDUmit Qual Antimony ND 0.6 0.68 200 20 X Qualifiers: ND-Not detected at the reporting limit R-RFD above accepted lint Y-Vaspiked sample>4 times amount spiked 1-Analyte detected below quantization Limits X-Duplicate samples)<5 times PQL 0-Analyte daeated in the associated method blank Page 18 H-Value above quantitatian range S•Spike recovery outside accepted recovery limits Z•Sample> 10 times blank result Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80-401.5047 (800)6.54.0506 (303)277-1687 Fax (303)277-1689 Date: 15-Jun-99 I CLIENT: CGRS QC SUMMARY REPORT 'Work Order: 9906044 Project: 2755aa Matrix Spike Batch ID A409 SeqNo:4328 Method:EPA 300.0 Prep Dale: Analysis Date:5127/99 Sample ID: 992130.1 SPK Matrix:Aqueous Units:mg/L Analyst:SSM Analyte Result t 2 sigma Limit SpikeVal SpikeRelVal %REC LowLimil NighLtrnit DupRelVal x 2 sigma RPD/RER RPDLimit Duel Chloride 18 1 10 8.3 09 75 125 FTJorlde 10 0.1 10 0.21 100 75 125 Nitrogen,Nitrate(As N) 10 0.1 10 0.19 100 75 125 Nitrogen,Nitrite 10 0.1 10 ND 104 75 125 Sulfate 25 1 10 '15 102 75 125 Qualifiers: ND-Not detected at the reporting limit R-I&FD above accepted limit Y-Unspiked sample>4 times amount spiked J-Analyze detected below quantitatian limits X -Duplicate sample(s)<5 times PQL B-Analyte detected in the associated method btank Page 19 E E.Value above quaotitation range S-Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result I) - Barringer Laboratories, Inc, 15000 1116th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Pax(.103)277-1689 Date: 15-Jun-99 f CLIENT: COBS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Matrix Spike Batch ID: A396 SegNo:4197 Method:EPA 200.7 Prep Date: Analysis Dale:6/10,199 Sample ID: 99060 44-01 13 MS MalrucAqueous Unils:mglL Analyst:SL.M Analyte Result a 2 sigma Limit SpikeVal SpikeRelVal %REC LowLimit HlghUmil DupReNal a 2 sigma RPD/RER PIPDLL/nit Quit Aluminum 4.6 0.05 2.0 2.6 101 75 125 Arsenic 2.1 0.1 2.0 ND 106 75 125 Barium 2.1 0.02 2.0 0.091 101 75 125 Beryllium 0.045 0.004 0.050 ND 90 75 125 Boron 1.2 0.1 1,0 0.21 99 75 12.5 Cadmium 0.051 0.005 0.050 ND 101 75 125 Chromium 0.21 0.01 0.20 ND 105 75 125 Cobalt 0.51 0.01 0.50 ND 103 75 125 Copper 0.25 0.01 0.25 ND 102 75 125 Iron 2.8 0.1 1.0 1.8 106 75 125 Lead 0.61 0.05 0.50 0.052 112 75 125 Manganese 1.1 0.005 0.50 0.58 107 75 125 Molybdenum 0.99 0.01 1.0 ND 99 75 125 Nickel 0.51 0.04 0.50 ND 102 75 125 Selenium 2.2 0.1 2.0 ND 109 75 125 Silver 0.044 0.01 0.050 ND 87 75 125 Strontium 2.0 0.005 1.0 1.0 101 75 125 Tin 1.0 0.1 1.0 ND 104 75 125 Titanium 1.0 0.01 1.0 0.012 101 75 125 Vanadium 0.52 0.01 0.50 ND 104 75 125 Zinc 0.58 0.02 0.50 ND 111 75 125 Qualifiers: ND-Not detected it the reporting Emil R-RPD above accepted limit Y-Unspiked sample>4 limes amount spiked .1-Analyte detected below quantilation limits X-Duplicate samples)<5 times PQL B-Analyte detected in the associated method blink Page 20 E-Value above quanlitation range S •Spike recovery outside accepted recovery limits Z-Sample> 10 times blsok result HIC-- I , Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401.5047 (800)6540506 (303)277-1687 Fax(303)277-1689 Date: 15-Jun-99 I CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Matrix Spike Batch ID: P99 SegNo:4291 Method:EPA 200.7 Prep Date:5/28/99 Analysis Date:6/2/99 Sample ID: 992215.2 SPK Matrix:Aqueous Units:mgR. Analyst:SLM Analyte Result t 2 sigma Limit SpikeVal SpikeReNal %REC Lott/Limit HigliUmit DupReNel t2 sigma RPD/RER RPDLimg Dual Aluminum 4.0 0.05 4.0 ND 101 75 125 Arsenic 3.8 0.1 4.0 NO 94 75 125 Barium 4.5 0.02 4.0 0.11 109 75 125 Beryllium 0.10 0.004 0.10 ND 103 75 125 Boron 2.1 0.1 2.0 ND 103 75 125 Cadmium 0.084 0.005 0.10 ND 84 75 125 Chromium 0.39 0.01 0.40 ND 97 75 125 Cobalt 0.93 0.01 1.0 ND 93 75 125 Copper 0.52 0.01 0.50 0.0090 103 75 125 Iron 2.0 0.1 2.0 ND 102 75 125 Lead 0.95 0.05 1.0 0.28 87 75 125 S Manganese 0.99 0.005 1.0 ND 99 75 125 Molybdenum 2.0 0.01 2.0 ND 98 75 125 Nickel 0.94 0.04 1.0 ND 94 75 125 Selenium 4.0 0-1 4.0 ND 100 75 125 Silver 0.094 0.01 0.10 ND 94 75 125 Strontium 2.5 0.005 2.0 0.16 116 75 125 Tin 1.8 0.1 2.0 ND 89 75 125 Titanium 2.0 0.01 2.0 ND 101 75 125 Vanadium 0.98 0.01 1.0 ND 96 75 125 Zinc 1.2 0.02 1.0 0.12 107 75 125 Qualifiers: ND-Not detected al the reporting limit R-RPD above accepted limit Y-Unspiked sample>4 times amount spiked 1-Analyte detected below qusntilation Limits X-Duplicate samples)<5 times PQL B-Analyte detected in the associated method blank page 21 B•Value above quantitatioo range S-Spike recovery outside accepted recovery limits Z-Sample> 10 limes blank result i Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden.Colorado 80401-5047 (800)654-0506 (303)277-1687 Fu(303)277.1689 Date: 15-Jon-99 1 _ CLIENT: CGRS QC SUMMARY REPORT Work order: 9906044 Project: 2755aa Matrix Spike Balch ID: A411 SegNo:4361 Method:EPA 365.1 Prep Date: Analysis Date:6/2199 Sample ID: 992220-2 SPK Matrix.Aqueous Units:mg/1- Analyst:7MS Analyte Result t 2 sigma limit SpikeVal SpikeReNal %REC LowLimit HighLimit OupReNal ±2 sigma RPD/RER RPDtimit Qual Total Phosphorus(As P) 0.38 0.05 0.20 0.19 99 75 125 Qoaliniers: ND•Not deieeted at the reporting limit R•RPD above accepted limit Y-Unspiked sample>4 times amount spiked J-Aoalyte detected below quaotitation bertha X•Duplicate sample(s)<5 times PQL B-Atulyte detected in the associated method blank Page 22 E-Value above quantitative range S-Spike recovery outside accepted recovery limits Z-Sample> 10 times bleak result Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0.506 (303)277-1687 Fax 1303)277.1689 Date: 1S-Jun-99 1 CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Matrix Spike Batch ID: A399 SegNo:4210 Method:EPA 204.2 Peep Date: Analysts Date:619/99 Sample 1D: 990604401B SPK Metric Aqueous Units:myL Analyst:AW Analyte Resuh t 2 sigma Limit SplkeVel SpikoRefVal %REC LowLimit I-fighUmit DupRelVal s 2 sigma RPD/RER RPDLImi1 Dual Antimony 0.024 0.008 0.020 ND 118 75 125 Qualifiers: ND•Not detected at the reponliag limit R-RPD above accepted limit Y-Unspiked sample>4 times amount spiked 1-Analyte detected below quantization limits X-Duplicate sample(s)<5 times PQL. B-Analyte detected io the associated method blank Page 23 B-Value above quantizatioo range S•Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result HrBarringer Laboratories, inc. 15000 IV 6th Avenue Suite 300 Golden.Colorado 80401-5047 (800)6544506 (303)277-1687 Fax(303)277.1689 Date: 1f5-Jun-99 CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Matrix Spike Batch ID: A404 SegNo:4265 Method:EPA 279.2 Prep Dais: Analysts Dale:515/99 Sample ID: 992215-4SPK Matrix:Aqueous Units:mg/L Analyst:AW Analyte Result x 2 sigma Limit SpikeVal SplkeRelVal %REC LowLimit HlghUmh DupReNal x2 sigma RPD/RER RPDLImit Oual Thallium 0.031 0.001 0.025 ND 123 75 125 • 1 r i 1 1 1 i 1 7 y L Qualifiers: ND-Not detected at the reporting limit R-RPD above accepted limit Y-Unspiked samplc>4 times amount spiked J )-Analyze detected below quantiation limits X-Duplicate samples)<5 times PQL B-Analyze detected in the associated method blank Page 24 B-Value above quantilation gauge S-Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result Barringer Laboratories, Inc. 15000 IV 6th At'rntre Suite 300 Golden.Colorodn 80401.5047 (800)65.1•0506 (303)277-1687 Pax(303)177-1689 bate: 15-Jun-99 I t CLIENT: CGRS QC SUMMARY REPORT York Order: 9906044 Project; 2755aa Matrix Spike Batch ID: A404 SegNo:4273 Method:EPA 279.2 Prep Date: Analysis Date:6/7,39 Sample ID: 9405644-01B MS Matrix:Aqueaua Units:rng/L Analyst:AW Ar.alyte Result t 2 sigma Limit SpikeVat SplktRe1Val %REC Low1imlt HIghLImit DupRefVet t 2 sigma RPD/RER RPDLImit Duel Thallium 0.024 0.002 0.020 ND 120 75 125 ND 0 0 I i Qualifiers: ND-Not detected at the reportiog limit R-RPD above accepted limit Y-Uaspiked sample>4 times amount spiked 5 .1-Analyse detected below quantitalion limits X-Duplicate sample(s)<5 times PQL B-Antlyto detected in the asstxiaieel method blank Page 25 B-Va13e above quantitatioa range S-Spike recovery outside accepted recovery limits Z-Sampte> tO times blank result Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)65C0506 (303)277.1687 Fax(301)277-1689 Date: IS Jun-99 L CLIENT: CGRS QC SUMMARY REPORT Work order: 9906044 Project: 2755aa Laboratory Control Spike Batch ID: A412 SeqNo:4365 Method:SM 2320B Prep Date: Analysis Date:6/2/89 Sample ID: LCS Matrix:Aqueous Units:mg/L Analyst TSB Analyte Result ±2 sigma Limit SpikeVal SprkeReiVal %REC LowUmit HighUmit DupRe1Vel *2 sigma RPD/RER RPDLIm]t Cum! Alkalinity,Carbonate(As CaCO3) 2400 5 2400 100 90 110 • i I • 1 - Qualifera: ND-Not detoctod at the reporting limit R-RPD above accepted limit Y-Unspiked sample>4 times amount spiked 1 1-Analyze detected below quantization limits X-Duplicate samples)<5 times PQL 6-Analyte detected in the associated method blank Page 26 8-Value above quantitadon range S•Spike recovery outside accepted recovery limits 2-Sample>10 times blank result I Barringer Laboratories, Inc. 15000 W 6rh hvenne Sulu 300 Golden.Colorado 80401-5047 (800)&54-0506 (303)277.1687 Fax(303)277.1689 Date: 15-Jun-99 1 CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Laboratory Control Spike Batch 1D: A409 SeqNo:4323 Method:EPA 300.0 Prep Dale: Analysis Data:5/27/99 Sample ID: LCS Matrix:Aqueous Units:mg/L Analyst:SSM Analyte Result t 2 sigma Limit SpikeVal SpikeRetVal %AEC LowLimit HighUmlt DupReiVal :2 sigma RPD/RER RPDLimil Dual Chloride 54 1 50 107 90 110 Fluotide 9.8 0.1 10 98 90 110 Nitrogen,Nitrate(As N) 9.8 0.1 10 98 90 110 Nlt open,Nitrite 10 0.1 10 104 90 110 Sulfate 75 1 75 99 90 110 r Qualifiers: ND-Not detected at the repartios limit R-RPD above accepted Limit Y-Unspiked sample>4 times amount spiked 5 1•Analys detected below quantitatio►limits X•Duplicate sample(s)<5 times PQL B-Aoalyte detected in the associated method blank Page 27 E•Value above quandtation range S-Spike recovery outside accepted recovery limits Z-Sample> 10 limes blank result I Barringer Laboratories, .Inc. 15000 W6►b Averwc Suite 300 Golden.CoIo,ado 80401-3047 (800)634-0506 (303)277.1687 Fax(301)277.1689 Date: 1S-Jun 99 t CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project; 2755aa Laboratory Control Spike Batch ID: A396 SegNo:4204 Method:EPA 200.7 Prep Date: Analysis Date:6/10/99 Sample ID: LCS Matrix:Aqueous Units:mg/L Analyst:SLM Analyte Result *2 sigma Limit SpikeVat SpikeRetVal %REC LowLImll HighUmil 0upRetVal ±2 sigma RPD/RER RPDLirrit Dual Aluminum 9.9 0.05 10 99 90 110 Arsenic 4.9 0.1 5.0 98 90 110 Barium 10 0.02 10 102 90 110 Beryllium 1.0 0.004 1.0 100 90 110 1 Boron 5.2 0.1 5.0 104 90 110 • Cadmium 1.0 0.005 1.0 103 90 110 i Calcium 20 0.2 20 102 90 110 Chromium 2.0 0.01 2.0 102 90 110 i Cobalt 5.1 0.01 5.0 101 90 110 C 1 opper 2.0 0.01 2.0 101 90 110 . Iron 10 0.1 10 105 90 110 1 Lead 5.1 0.05 5.0 102 90 110 ; Lithium 5.1 0.02 5.0 101 90 110 % Magnesium 21 0.1 20 103 90 110 i Manganese 1.0 0.005 1.0 104 90 110 Molybdenum 5.0 0.01 5.0 100 90 110 Nickel 5.1 0.04 5.0 102 90 110 Potassium 21 5 20 104 90 110 Selenium 5.1 0.1 5.0 102 90 110 i Silver 1.0 0.01 1.0 103 90 110 • Sodium 20 1 20 100 90 110 Strontium 1.0 0.005 1.0 100 90 110 . 1 Tin 5.0 0.1 5.0 99 90 110 i Titanium 0.99 0.01 1.0 99 00 110 Vanadium 5.1 0.01 5.0 101 90 110 • Qual erera: ND-Not detected at the reporting limit R•RPD above accepted limit Y-Uospiked sample>4 times amount spiked I-Anaiyte detected below quantitation limits X-Duplicate sample(s)<5 times)'QL B-Anttyte detected in the associated method blank Page 28 B-Value above quantltation range S•Spike recovery ouuide accepted recovery limits Z-Sample> 10 times blank result Barringer Laboratories, Inc.IC--- 15000 W 60,Avenue Suite 300 Golden,Colorado 80401-5047 (800)6540506 (303)277-1687 Fax(303)277.1689 Date: (5-Jun-99 CLIENT: CGRS Work order; 9906644 QC SUMMARY REPORT Project: 2755aa Laboratory Control Spike Zinc 1.0 0.02 1.0 102 90 110 I i i 1 i i t i 1 1 i 1 I n 1 1 I r QuaBOen: ND-Not detected at the reporting limit R•RPD above accepted limit Y-Unspikcd sample>I times amount spiked l-Amble detected below quantitation limits X-Duplicate samplc(s)<5 times PQL B-Analyte detected in the associated method blank Page 29 5-Value above quaodtadon range S•Spike recovery outside accepted recovery limits Z-Sample> 10 times blank msull Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 8040)-5047 (800)654-0506 (303)277-1687 Pu(303)277-1689 DaLe: 15-Jun-99 1 CLIENT: CGRS Work Order: 9906(114 QC SUMMARY REPORT Project: 2755aa Laboratory Control Spike Batch ID: P99 SeqNo:4254 Method:EPA 200.7 Prep Date:5128/99 Analysis Date:6/2/99 Sample ID: LCS-99 Matrix:Aqueous Units:mgll. Analyst:SLM Analyte Remit ±2 sigma Limit SpikeVal SpikeReNal 9'.REC LowLimit HighUmll DupReNal 12 sigma RPD/AER RPDUmit Qual Aluminum 9.7 0.05 10 97 85 115 Arsenic 4.7 0.1 5.0 95 85 115 Barium 10 0.02 10 102 85 115 Beryllium 0.98 0.004 1.0 98 85 115 Boron 1.0 0.1 1.0 102 85 115 Cadmium 0.96 0.005 1.0 96 85 115 Calcium 19 0.2 20 96 85 115 Chromium 2.0 0.01 2.0 98 85 115 Cobalt 4.8 0.01 5.0 97 85 115 Copper 2.0 0.01 2.0 100 85 115 Iron 10 0.1 10 101 85 115 Lead 4,9 0.05 5.0 98 85 115 Lithium 1.0 0.02 1.0 102 85 115 Magnesium 20 0.1 20 100 85 115 Manganese 1.0 0.005 1.0 100 85 115 Molybdenum 0.98 0.01 1.0 98 85 115 Nickel 4.9 0.04 5.0 97 85 115 Potassium 19 5 20 96 85 115 Selenium 4.9 0.1 5.0 99 85 115 Silver 0.93 0.01 1.0 93 85 115 Sodium 22 1 20 108 85 115 Strontium 1.0 0.005 1.0 100 85 115 Tin 0.93 0.1 1.0 93 85 115 Titanium 0.98 0.01 1.0 98 85 115 Vanadium 4.9 0.01 5.0 98 85 115 Qualifiers: ND•Not detected at the reporting limit R•RPD above accepted limit Y-Uospiked sample>4 limes amount spiked 3-Analyte detected below qusotitation limits X-Duplicate sample(s)<5 times PQL 8-Analyte detected in the associated method blank Page 30 II-Value above quantitation range 5-Spike recovery outside accepted recovery limits Z-Sample>10 times blank result Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277.1687 Fax(303)277-1689 Date: (5-Jun-99 CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Laboratory Control Spike Zinc 0.96 0.02 1.0 96 85 115 Quatillers: ND-Not detected at the reporting limit R-RPD above accepted limit Y•Unspiked sample>4 times amount spiked 1•Mrdyte detected below quaatitatioo limits X-Duplicate sample(s)<5 times PQL B-Malytc detected in the associated method blank Page 31 B-Value above quanliuG®range S-Spike recovery outside accepted recovery limits Z-Sampk> 10 times blank result I Barringer Laboratories, Inc, 15000 N/6th Avenue Surte 300 Golden, Colorado 80401-56X7 (800)654.0506 (303)277-1687 Fax(303)277-1689 Date: 15-Jun-99 CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Laboratory Control Spike Batch ID: A411 SaqNo:4364 Method:EPA 365.1 Prep Date: Analysts Date:8i2/99 Sample ID: LCS Matruc Aqueous Units:mg/L Analyst:7MS Analyte Result t2 sigma Limit SpikeVat Sp;keRafVal %REC I.-owtimit HighLlmtt DupRetVal t2 sigma RPD/RER RPDLimt (Dual Total Phosphorus(As P) 0.54 0.05 0.53 103 86 114 Quatiriers: ND-Not detected at the reporting limit R-RPD above scccpled limit Y-Unspikcd sample>4 times amount spiked 1-Analyte detected below quantitation IimiU X-Duplicate rample(s)<5 times PQL 11•Analyte detected io the associated method blank Page 32 E-Value above quantity ion range S-Spike recoveryoutside accepted recovery limits Z-Sample> 10 times blank result L! -- , Barringer Laboratories, Inc. 15000 W 6rh Avenrie Surre 100 Golden,Colorado 80401-5047 (800)654.0506 (303)277-1687 Fax(303)277-1689 Date: 15-Jun-99 CLIENT: CGRS QC SUMMARY REPORT Work Order: 9906044 Project: 2755aa Laboratory Control Spike Batch ID: P9.3 SegNo:4255 Method:EPA 200.9 Prep Date: Analysts Data:616199 Semple ID: LCS-98 Matrix:Aqueous Untis;mg1L Analyst:AW Analyte Result ±2 sigma Llmil SpikeVal SpikeRelVal '/PEC t..ovrJmitHighLlmit DupReNal Y2 sigma RPD/FIER RPDLimit Cual Tha!I um 0.052 0.002 0.050 103 85 115 Qualifiers: ND-Not detected at the reporting limit R-RPD above accepted Limit Y-Unspiked sample>4 limes amount spiked J-Acolyte detected below quantitatioa limits X-Duplicate sample(s)<S times PQL B •Analyte detected in the associated method bLsnt Page 33 B-Value above quantitalion range S•Spike recovery outside accepted recover/limits Z-Sample> 10 limes bLok result Barringer Laboratories, Inc. 150OO Si'6th Aver,rre Sr,irc 3OO Golden,Colorado 80401.5047 (80O)654-0506 (303)277.1687 Fax(303)277.1689 Date: 15-Jun-99 1 CLIENT: CGRS Work Order: 99C}&044 QC SUMMARY REPORT Project: 2755aa Laboratory Control Spike Batch ID: P98 S9gNo:4212 Method:EPA 200.9 Prep Dale:5/28/99 Analysis Date:6/9/90 Sample ID. LCS-9B Matrix Aqueous Units:tngJL Analyst:AW Anatyle Result ±2 sigma Limit SpikeVal SpikeiialVat %REC LowLSmit HlghLlmit DupReNal i 2 sigma RPD/RER RPDUmit Qua! Antimony 0.054 0.006 0.050 108 85 115 Qualillas: ND-No4 detected at the rcportiog limit R-RPD above accepted limit Y-Unspiked sample>4 tines amount spiked 1 •Aaalyte detected below quantitation limits X-Duplicate sample(s)<5 times PQL B-Analyte detected in the associated method blank Page 34 B- Vatue above quantization range 5-Spike recovery outside accepted recovery limits Z-Sample>10 times blank result I rn N ti Barringer Laboratories, Inc. q t- 0 15000 W 6rlh Avenue Suire 300 Golden, Colorado 80401-5047 (800)654.0506 (303)277-1687 Fax(30J)277-1689 Date: (5-Jurt-99 CLIENT: CGRS QC SUMMARY REPORT 1Vork Order: 9906444 Project: 2755aa Laboratory Control Spike Batch ID: A399 SeqNo:4217 Method:EPA 204.2 Prep Date: Analysis Date:6/9i99 Sample ID: LCS Matrix:Aqueous Units:mg/l- Analyst:AW Acolyte Result ±2 sigma Limit SplkoVaJ SpikeRoiVal %REC Lo ,4Jmit HlghLimit DupRerVal ±2 sigma RPD/RER RPOLIrnit Oval Antimony 0.052 0.006 0.050 104 85 115 Qualifiers: ND-Not detected at the reporting limit R-RPD above accepted limit Y-llnspiked sample>4 times amount spiked J-AnAlyte detected below quantilation Limits X-Duplicate sampic(s)<5 times PQL B• Analyte detected in the associated method blink Page 35 E-Value above quantitation range S•Spike recovery outside accepted recovery Iimiu 2-Sample> 10 times blank result JAN 24 2000 Date: 20-Jan-00 Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Joby Adams CGRS P.O. Box 1002 Fort Collins, CO 80525 Phone: Fax: 1-970-493-7986 Work Order: 9912163 Project: 2755 ua Dear Joby Adams, Barringer Laboratories received 1 sample on 12/20/99 for the analyses presented in the following report. There were no problems with the analyses and all data for associated QC met EPA or laboratory specifications except where noted in the Case Narrative. If you have any questions regarding these test results, please feel free to call. ./u,w Steve Mustain Inorganic Laboratory Manager Clarence Lott / t-//2 Project Review Date: 20-Jan-00 Barri der Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Project: 2755 ua Work Order: 9912163 SAMPLE SUMMARY Date Received: 12/20/99 Temp Received: 6°C Lab Sample ID Client Sample ID Tag Number Collection Date Matrix Bottle and Preservation 9912163-01A VARRA QUARRY 12/20/99 10:22:00 AM Aqueous 1L plastic,unpreserved 9912163-018 VARRA QUARRY 12/20/99 10:22:00 AM Aqueous 1L plastic,unpreserved 9912163-01C VARRA QUARRY 12/20/99 10:22:00 AM Aqueous 500mL plastic,preserved 1:1 H2SO4 to phIc2 Page 1 of 1 H ___ Date: 20-Jan-00 Barringer Laboratories, Inc. 15000 W 6th Avenue Suite 300 Golden.Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Project: 2755 ua CASE NARRATIVE Work Order: 9912163 All reported values in this report have been rounded to the correct number of significant figures. All calculations have been performed before applying significant figures,therefore, not all calculations may be reproducible with the results printed in this report. Analytical comments for method EPA 270.2, sample 9912163-01 B:The sample was analyzed for selenium using the method of standard additions. This report has been amended from the report dated 1/6/2000 to report the reanalysis of the samples for chloride,fluoride, and sulfate. During a review of the IC data it was discovered that the standards used to calibrate the insturment were past a laboratory assigned expiration date. The instrument was recalibrated using compliant standards and the samples were then reanalyzed. Page 1 of 1 I Date: 20-Jan-00 HBarringer Laboratories, Inc. CLIENT SAMPLE REPORT 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Client Sample ID: VARRA QUARRY Lab Sample ID: 9912163-01I Work Order: 9912163 Date Collected: 12/20/1999 Project: 2755 ua Tag Number: Matrix: Aqueous Analyte CAS# Method Result ±2 sigma Limit Qua' Unit DF Prepped Analyzed Analyst Batch Alkalinity,Bicarbonate(As CaCO3) 471-34-1 SM 2320B 470 5 mg/L 1 12/23/1999 PKL A3843 Alkalinity,Carbonate(As CaCO3) 471-34-1 SM 23206 <5 5 mg/L 1 12/23/1999 PKL A3843 Alkalinity, Hydroxide(As CaCO3) SM 23208 <5 5 mg/L 1 12/23/1999 PKL A3843 Alkalinity,Total(As CaCO3) 3812-32-6 SM 23208 470 5 mg/L 1 12/23/1999 PKL A3843 Chloride,dissolved 16887-00-6 EPA 300.0 66 1 mg/L 1 01/15/2000 RAB A4282 Fluoride,dissolved 16984-48-8 EPA 300.0 0.89 0.1 mg/L 1 01/15/2000 RAB A4282 Nitrogen, Nitrate(As N),dissolved 7727-37-9 EPA 300.0 17 0.2 mg/L 2 12/21/1999 RAB A3790 Nitrogen, Nitrite,dissolved 7727-37-9 EPA 300.0 <0.2 0.2 mg/L 2 12/21/1999 RAB A3790 Sulfate,dissolved 14808-79-8 EPA 300.0 1500 20 mg/L 20 01/14/2000 RAB A4282 Client: CGRS Client Sample ID: VARRA QUARRY Lab Sample ID: 9912163-016 Work Order: 9912163 Date Collected: 12/20/1999 Project: 2755 ua Tag Number: Matrix: Aqueous Analyte CAS# Method Result ±2 sigma Limit Oual Unit DF Prepped Analyzed Analyst Batch Aluminum,dissolved 7429-90-5 EPA 200.7 <0.05 0.05 mg/L 1 12/29/1999 CLH A3935 Barium,dissolved 7440-39-3 EPA 200.7 0.032 0.02 mg/L 1 12/29/1999 CLH A3935 Beryllium,dissolved 7440-41.7 EPA 200.7 <0.004 0.004 mg/L 1 12/29/1999 CLH A3935 Boron,dissolved 7440-42-8 EPA 200.7 0.44 0.1 mg/L 1 12/29/1999 CLH A3935 Cadmium,dissolved 7440-43-9 EPA 200.7 <0.005 0.005 mg/L 1 12/29/1999 CLH A3935 Calcium,dissolved 7440-70-2 EPA 200.7 210 0.2 mg/L 1 12/29/1999 CLH A3935 Chromium,dissolved 7440-47-3 EPA 200.7 <0.01 0.01 mg/L 1 12/29/1999 CLH A3935 Cobalt,dissolved 7440-48-4 EPA 200.7 <0.01 0.01 mg/L 1 12/29/1999 CLH A3947 Copper,dissolved 7440-50-8 EPA 200.7 <0.01 0.01 mg/L 1 12/29/1999 CLH A3935 Iron,dissolved 7439-89-6 EPA 200.7 <0.1 0.1 mg/L 1 12/29/1999 CLH A3935 Lithium,dissolved 7439-93-2 EPA 200.7 0.057 0.02 mg/L 1 12/29/1999 CLH A3935 Magnesium,dissolved 7439-95-4 EPA 200.7 290 0.1 mg/L 1 12/29/1999 CLH A3935 Manganese,dissolved 7439-96-5 EPA 200.7 <0.005 0.005 mg/L 1 12/29/1999 CLH A3935 Nickel,dissolved 7440-02-0 EPA 200.7 <0.04 0.04 mg/L 1 12/29/1999 CLH A3935 Potassium,dissolved 7440-09-7 EPA 200.7 6.4 5 mg/L 1 12/29/1999 CLH A3935 Silver,dissolved 7440-22-4 EPA 200.7 <0.01 0.01 mg/L 1 12/29/1999 CLH A3935 Sodium,dissolved 7440-23-5 EPA 200.7 300 1 mg/L 1 12/29/1999 CLH A3947 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits Y-Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit B-Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits 2-Sample> 10 times blank result Page 1 of 2 i)C-- , Date: 20-Jan-00 Barringer Laboratories, Inc. CLIENT SAMPLE REPORT 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Vanadium,dissolved 7440-62-2 EPA 200.7 <0.01 0.01 mg/L 1 12/29/1999 QILH A3935 Zinc,dissolved 7440-66-6 EPA 200.7 <0.02 0.02 mg/L 1 12/29/1999 CLH A3935 Antimony,dissolved 7440-36-0 EPA 204.2 <0.006 0.006 mg/L 1 01/04/2000 JWH A4040 Arsenic,dissolved 7440-38-2 EPA 206.2 <0.003 0.003 mg/L 1 01/03/2000 JWH A4030 Lead,dissolved 7439-92-1 EPA 239.2 <0.002 0.002 mg/L 1 12/29/1999 JWH A3934a Mercury,dissolved 7439-97-6 EPA 245.1 <0.0002 0.0002 mg/L 1 12/30/1999 BAB A3978 Selenium,dissolved 7782-49-2 EPA 270.2 <0.01 0.01 mg/L 2 01/03/2000 JWH A4037 Thallium,dissolved 7440-28-0 EPA 279.2 <0.002 0.002 mg/L 1 01/04/2000 JWH A4050 Client: CGRS Client Sample ID: VARRA QUARRY Lab Sample ID: 9912163-01C Work Order: 9912163 Date Collected: 12/20/1999 Project: 2755 ua Tag Number: Matrix: Aqueous Analyte CAS# Method Result *2 sigma Limit Dual Unit DF Prepped Analyzed Analyst Batch Total Phosphorus(As P) 7723-14-0 EPA 365.1 0.19 0.05 mg/L 1 12/30/1999 RAB A3960 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits Y-Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit B-Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result Page 2 of 2 I Date: 20-Jan-00 Barringer Laboratories, Inc. BATCH QC SUMMARY REPORT 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Batch ID: A3790 Sample ID: 9912071-01BDUP Method: EPA 300.0 Prepped: Work Order:9912163 Seq No: 70750 Unit: mg/L Analyzed: 12/21/99 Project: 2755 ua Sample Duplicate Run ID: IC2_991221A Matrix: Aqueous Analyst: RAD Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupReNal x 2 sigma RPD/RER RPDLimit Qual Nitrogen,Nitrate(As N) 1.7 0.1 1.8 3 20 Nitrogen,Nitrite ND 0.1 ND 0 20 Client: CGRS Batch ID: A3790 Sample ID: LCS Method: EPA 300.0 Prepped: Work Order:9912163 Seq No: 71683 Unit: mg/L Analyzed: 12/21/99 Project: 2755 ua Laboratory Control Spike Run ID: IC2_991221A Matrix: Aqueous Analyst: RAB Analyte Result x 2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupReNal x 2 sigma RPD/RER RPDLimit Qual Nitrogen,Nitrate(As N) 11 0.1 10 107 90 110 Nitrogen, Nitrite 9.4 0.1 10 94 90 110 Client: CGRS Batch ID: A3790 Sample ID: MBLK Method: EPA 300.0 Prepped: Work Order:9912163 Seq No: 71684 Unit: mg/L Analyzed: 12/21/99 Project: 2755 ua Method Blank Run ID: IC2_991221A Matrix: Aqueous Analyst: RAB Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Qual Nitrogen,Nitrate(As N) ND 0.1 Nitrogen,Nitrite ND 0.1 Client: CGRS Batch ID: A3790 Sample ID: 9912071-01BMS Method: EPA 300.0 Prepped: Work Order:9912163 Seq No: 70751 Unit: mg/L Analyzed: 12/21/99 Project: 2755 ua Matrix Spike Run ID: IC2_991221A Matrix: Aqueous Analyst: RAB Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupReNal x 2 sigma RPD/RER RPDLimit Qual Nitrogen, Nitrate(As N) 13 0.1 10 1.8 108 75 125 Nitrogen, Nitrite 9.5 0.1 10 ND 95 75 125 Client: CGRS Batch ID: A3843 Sample ID: 9912204-01DDUP Method: SM 2320B Prepped: Work Order:9912163 Seq No: 71501 Unit: mg/L Analyzed: 12/23/99 Project: 2755 ua Sample Duplicate Run ID: BURET_991223A Matrix: Aqueous Analyst: PKL Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefal ±2 sigma RPD/RER RPDLimit Qual Alkalinity,Bicarbonate(As CaCO3) 130 5 130 0 20 Alkalinity,Carbonate(As CaCO3) ND 5 ND 0 20 Alkalinity,Hydroxide(As CaCO3) ND 5 ND 0 20 Alkalinity,Total(As CaCO3) 130 5 130 0 20 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits V-Unspiked sample>4 times amount spiked J•Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit B-Analyte detected In the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample>10 times blank result Page 1 of 11 K I I Date: 20-Jan-00 Barringer Laboratories, Inc. BATCH QC SUMMARY REPORT 000 W 6th Avenue Suite 300 Golden, Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 I Client: CGRS Batch ID: A3843 Sample ID: LCS Method: SM 23208 Prepped: Work Order. 9912163 Seq No: 71664 Unit: mg/L Analyzed: 12/23/99 Project: 2755 ua Laboratory Control Spike Run ID: BURET_991223A Matrix: Aqueous Analyst: PKL Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Qual Alkalinity, Bicarbonate(As CaCO3) 2300 5 2400 99 90 110 Alkalinity,Carbonate(As CaCO3) 2300 5 2400 99 90 110 Alkalinity, Hydroxide(As CaCO3) ND 5 0 0 0 0 Alkalinity,Total(As CaCO3) 2300 5 2400 99 90 110 Client: CGRS Batch ID: A3934a Sample ID: 9912160-01BDUP Method: EPA239.2 Prepped: Work Order. 9912163 Seq No: 73461 Unit: mg/L Analyzed: 12/29/99 Project: 2755 ua Sample Duplicate Run ID: Z5100_991229A Matrix: Aqueous Analyst: JWH Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Qual Lead 0.0025 0.002 ND 200 20 X Client: CGRS Batch ID: A3934a Sample ID: LCS Method: EPA 239.2 Prepped: Work Order:9912163 Seq No: 72863 Unit: mg/L Analyzed: 12/28/99 Project: 2755 ua Laboratory Control Spike Run ID: Z5100_991228A Matrix: Aqueous Analyst: JCB Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Qual Lead 0.054 0.002 0.050 109 85 115 Client: CGRS Batch ID: A3934a Sample ID: MBLK Method: EPA 239.2 Prepped: Work Order:9912163 Seq No: 72862 Unit: mg/L Analyzed: 12/28/99 Project: 2755 ua Method Blank Run ID: Z5100_991228A Matrix: Aqueous Analyst: JCB Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Lead ND 0.002 Client: CGRS Batch ID: A3934a Sample ID: 9912160-01BMS Method: EPA 239.2 Prepped: Work Order:9912163 Seq No: 73462 Unit: mg/L Analyzed: 12/29/99 Project: 2755 ua Matrix Spike Run ID: 75100_991229A Matrix: Aqueous Analyst: JWH Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Lead 0.023 0.002 0.020 ND 117 75 125 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits Y-Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit B-Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result Page 2 of 11 Date: 20-Jan-00 HBarringer Laboratories, Inc. BATCH QC SUMMARY REPORT 15000 W 6th Avenue Suite 300 Golden, Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Batch ID: A3935 Sample ID: 9912163-01BDUP Method: EPA200.7 Prepped: Work Order:9912163 Seq No: 72884 Unit: mg/L Analyzed: 12/29/99 Project: 2755 ua Sample Duplicate Run ID: ICAP_991229A Matrix: Aqueous Analyst: CLH Analyte Result t 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal t 2 sigma RPD/RER RPDLimit Qual Aluminum ND 0.05 ND 0 20 Barium 0.033 0.02 0.032 2 20 Beryllium ND 0.004 ND 0 20 Boron 0.44 0.1 0.44 0 20 Cadmium ND 0.005 ND 0 20 Calcium 210 0.2 210 1 20 Chromium ND 0.01 ND 0 20 Copper ND 0.01 ND 0 20 Iron ND 0.1 ND 0 20 Lithium 0.054 0.02 0.057 4 20 Magnesium 290 0.1 290 1 20 Manganese ND 0.005 ND 0 20 Nickel ND 0.04 ND 0 20 Potassium 5.6 5 6.4 14 20 Silver ND 0.01 ND 0 20 Vanadium ND 0.01 ND 0 20 Zinc ND 0.02 ND 0 20 Client: CGRS Batch ID: A3935 Sample ID: LCS Method: EPA 200.7 Prepped: Work Order:9912163 Seq No: 72974 Unit: mg/L Analyzed: 12/29/99 Project: 2755 ua Laboratory Control Spike Run ID: ICAP_991229A Matrix: Aqueous Analyst: CLH Analyte Result t 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal t 2 sigma RPD/RER RPDLimit Qual Aluminum 9.8 0.05 10 98 85 115 Barium 10 0.02 10 100 85 115 Beryllium 0.98 0.004 1.0 98 85 115 Boron 5.1 0.1 5.0 101 85 115 Cadmium 1.0 0.005 1.0 102 85 115 Calcium 20 0.2 20 100 85 115 Chromium 2.0 0.01 2.0 102 85 115 Copper 2.0 0.01 2.0 100 85 115 Iron 10 0.1 10 102 85 115 Lithium 5.1 0.02 5.0 101 85 115 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits Y-Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit B-Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample>10 times blank result Page 3 of 11 Date: 20-Jan-00 Barringer Laboratories, Inc. BATCH QC SUMMARY REPORT 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Magnesium 20 0.1 20 101 85 115 I Manganese 1.0 0.005 1.0 101 85 115 Nickel 5.1 0.04 5.0 101 85 115 Potassium 20 5 20 102 85 115 Silver 1.0 0.01 1.0 101 85 115 Vanadium 5.0 0.01 5.0 100 85 115 Zinc 1.0 0.02 1.0 101 85 115 Client: CGRS Batch ID: A3935 Sample ID: MBLK Method: EPA 200.7 Prepped: Work Order:9912163 Seq No: 72975 Unit: mg/L Analyzed: 12/29/99 Project: 2755 ua Method Blank Run ID: ICAP_991229A Matrix: Aqueous Analyst: CLH Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit (Dual Aluminum ND 0.05 Barium ND 0.02 Beryllium ND 0.004 Boron ND 0.1 Cadmium ND 0.005 Calcium ND 0.2 Chromium ND 0.01 Copper ND 0.01 Iron ND 0.1 Lithium ND 0.02 Magnesium ND 0.1 Manganese ND 0.005 Nickel ND 0.04 Potassium ND 5 Silver ND 0.01 Vanadium ND 0.01 Zinc ND 0.02 Client: CGRS Batch ID: A3935 Sample ID: 9912163-01BMS Method: EPA 200.7 Prepped: Work Order:9912163 Seq No: 72885 Unit: mg/L Analyzed: 12/29/99 Project: 2755 ua Matrix Spike Run ID: ICAP_991229A Matrix: Aqueous Analyst: CLH Analyte Result ±2 sigma Limit SpikeVal SpikeRetVal %REC LowLimit HighLimit DupRelVal t 2 sigma RPD/RER RPDLimit 'Dual Aluminum 2.0 0.05 2.0 ND 98 75 125 Barium 1.7 0.02 2.0 0.032 85 75 125 Qualifiers: ND-Not detected at the reporting limit R- RPD outside accepted recovery limits V•Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit B-Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample>10 times blank result Page 4 of 11 I I Hr- , • Date: 20-Jan-00 Barringer Laboratories, Inc. BATCH QC SUMMARY REPORT 15000 W 6th Avenue Suite 300 Golden, Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Beryllium 0.048 0.004 0.050 ND 96 75 125 r Boron 1.4 0.1 1.0 0.44 94 75 125 Cadmium 0.038 0.005 0.050 ND 77 75 125 Chromium 0,20 0.01 0.20 ND 98 75 125 Copper 0.25 0.01 0.25 ND 98 75 125 Iron 0.95 0.1 1.0 ND 95 75 125 Manganese 0.49 0.005 0.50 ND 99 75 125 Nickel 0.49 0.04 0.50 ND 98 75 125 Silver 0.042 0.01 0.050 ND 84 75 125 Vanadium 0.50 0.01 0.50 ND 100 75 125 Zinc 0.49 0.02 0.50 ND 97 75 125 Client: CGRS Batch ID: A3947 Sample ID: 9912163-01BDUP Method: EPA 200.7 Prepped: Work Order.9912163 Seq No: 73136 Unit: mg/L Analyzed: 12/29/99 Project: 2755 ua Sample Duplicate Run ID: ICAP_991229B Matrix: Aqueous Analyst: CLH Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Cobalt ND 0.01 ND 0 20 Sodium 310 1 300 4 20 Client: CGRS Batch ID: A3947 Sample ID: LCS Method: EPA 200.7 Prepped: Work Order:9912163 Seq No: 74400 Unit: mg/L Analyzed: 12/29/99 Project: 2755 ua Laboratory Control Spike Run ID: ICAP_991229B Matrix: Aqueous Analyst: CLH Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Qual Cobalt 5.1 0.01 5.0 102 85 115 Sodium 20 1 20 102 85 115 Client: CGRS Batch ID: A3947 Sample ID: MBLK Method: EPA 200.7 Prepped: Work Order:9912163 Seq No: 74401 Unit: mg/L Analyzed: 12/29/99 Project: 2755 ua Method Blank Run ID: ICAP_991229B Matrix: Aqueous Analyst: CLH Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Qual Cobalt ND 0.01 Sodium ND 1 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits Y-Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit B-Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result Page 5 of 11 • Date: 20-Jan-00 Hr I Barringer Laboratories, Inc. BATCH QC SUMMARY REPORT 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Batch ID: A3947 Sample ID: 9912163-01BMS Method: EPA 200.7 Prepper4: Work Order:9912163 Seq No: 73137 Unit: mg/L Analyzed: 12/29/99 Project: 2755 ua Matrix Spike Run ID: ICAP_991229B Matrix: Aqueous Analyst: CLH Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HlghLimit DupRefVal ±2 sigma RPD/RER RPDLimit Dual Cobalt 0.47 0.01 0.50 ND 94 75 125 Client: CGRS Batch ID: A3960 Sample ID: 9912163-01CDUP Method: EPA 365.1 Prepped: Work Order.9912163 Seq No: 73333 Unit: mg/L Analyzed: 12/30/99 Project: 2755 ua Sample Duplicate Run ID: LACHAT_991230A Matrix: Aqueous Analyst: RAB Analyte Result x 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal x 2 sigma RPD/RER RPDLimit Qual Total Phosphorus(As P) 0.088 0.05 0.19 74 20 X Client: CGRS Batch ID: A3960 Sample ID: 9912163-01CMS Method: EPA 365.1 Prepped: Work Order:9912163 Seq No: 73334 Unit: mg/L Analyzed: 12/30/99 Project: 2755 ua Matrix Spike Run ID: LACHAT_991230A Matrix: Aqueous Analyst: RAB Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Dual Total Phosphorus(As P) 0.34 0.05 0.20 0.19 74 75 125 S Client: CGRS Batch ID: A3978 Sample ID: 9912163-01BDUP Method: EPA 245.1 Prepped: Work Order:9912163 Seq No: 73623 Unit: mg/L Analyzed: 12/30/99 Project: 2755 ua Sample Duplicate Run ID: FIMS_991230A Matrix: Aqueous Analyst: BAB Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Qual Mercury ND 0.0002 ND 0 20 Client: CGRS Batch ID: A3978 Sample ID: 9912227-01ADUP Method: EPA 245.1 Prepped: Work Order:9912163 Seq No: 73657 Unit: mg/L Analyzed: 12/30/99 Project: 2755 ua Sample Duplicate Run ID: FIMS_991230A Matrix: Solid Analyst: BAB Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Mercury ND 0.002 ND 0 20 Client: CGRS Batch ID: A3978 Sample ID: LCS Method: EPA 245.1 Prepped: Work Order:9912163 Seq No: 74321 Unit: mg/L Analyzed: 12/30/99 Project: 2755 ua Laboratory Control Spike Run ID: FIMS_991230A Matrix: Aqueous Analyst: BAB Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Dual Mercury 0.0049 0.0002 0.0050 99 85 115 Qualifiers: ND•Not detected at the reporting limit R-RPD outside accepted recovery limits V-Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X•Duplicate sample(s)<5 times limit B.Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z.Sample>10 times blank result Page 6 of 11 I • Date: 20-Jan-00 HBarringer Laboratories, Inc. BATCH QC SUMMARY REPORT 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Far(303)277-1689 Client: CGRS Batch ID: A3978 Sample ID: MBLK Method: EPA 245.1 Preppe4: Work Order:9912163 Seq No: 74322 Unit: mg/L Analyzed: 12/30/99 Project: 2755 ua Method Blank Run ID: FIMS_991230A Matrix: Aqueous Analyst: BAB Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Qual Mercury ND 0.0002 Client: CGRS Batch ID: A3978 Sample ID: 9912163-01BMS Method: EPA 245.1 Prepped: Work Order:9912163 Seq No: 73624 Unit: mg/L Analyzed: 12/30/99 Project: 2755 ua Matrix Spike Run ID: FIMS_991230A Matrix: Aqueous Analyst: BAB Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupReNal x 2 sigma RPD/RER RPDLimit Qual Mercury 0.00075 0.0002 0.0010 ND 75 75 125 Client: CGRS Batch ID: A3978 Sample ID: 9912227-01AMS Method: EPA 245.1 Prepped: Work Order:9912163 Seq No: 73658 Unit: mg/L Analyzed: 12/30/99 Project: 2755 ua Matrix Spike Run ID: FIMS_991230A Matrix: Solid Analyst: BAB Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupReNal ±2 sigma RPD/RER RPDLimit Qual Mercury 0.014 0.002 0.020 ND 69 75 125 S Client: CGRS Batch ID: A4030 Sample ID: 9912163-01BDUP Method: EPA206.2 Prepped: Work Order.9912163 Seq No: 74514 Unit: mg/L Analyzed: 1/3/00 Project: 2755 ua Sample Duplicate Run ID: 5100ZL_000103A Matrix: Aqueous Analyst: JWH Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC Lou/Limit HighLimit DupReNal x 2 sigma RPD/RER RPDLimit Qual Arsenic ND 0.003 ND 0 20 Client: CGRS Batch ID: A4030 Sample ID: LCS Method: EPA 206.2 Prepped: Work Order: 9912163 Seq No: 74550 Unit: mg/L Analyzed: 1/3/00 Project: 2755 ua Laboratory Control Spike Run ID: 5100ZL_000103A Matrix: Aqueous Analyst: JWH Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Arsenic 0.051 0.003 0.050 102 85 115 Client: CGRS Batch ID: A4030 Sample ID: MBLK Method: EPA 206.2 Prepped: Nork Order. 9912163 Seq No: 74551 Unit: mg/L Analyzed: 1/3/00 roject: 2755 ua Method Blank Run ID: 5100ZL_000103A Matrix: Aqueous Analyst: JWH Analyte Result ±2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Arsenic ND 0.003 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits Y-Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit 8-Analyte detected In the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample>10 times blank result Page 7 of 11 . Date: 20-Jan-00 Barringer Laboratories, Inc. BATCH QC SUMMARY REPORT 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Batch ID: A4030 Sample ID: 9912163-01BMS Method: EPA 206.2 Prepped: Work Order:9912163 Seq No: 74515 Unit: mg/L Analyzed: 1/3/00 Project: 2755 ua Matrix Spike Run ID: 5100ZL_000103A Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeRefVal °/GIREC LowLimit HighLimit DupReNal t 2 sigma RPD/RER RPDLimit Oual Arsenic 0.020 0.003 0.020 ND 98 75 125 Client: CGRS Batch ID: A4037 Sample ID: 9912163-01BDUP Method: EPA 270.2 Prepped: Work Order:9912163 Seq No: 74629 Unit: mg/L Analyzed: 1/3/00 Project: 2755 ua Sample Duplicate Run ID: Z5100_000103A Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal t 2 sigma RPD/RER RPDLimit Qual Selenium ND 0.01 ND 0 20 Client: CGRS Batch ID: A4037 Sample ID: LCS Method: EPA 270.2 Prepped: Work Order:9912163 Seq No: 74625 Unit: mg/L Analyzed: 1/3/00 Project: 2755 ua Laboratory Control Spike Run ID: 7.5100_000103A Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal t 2 sigma RPD/RER RPDLimit Qual Selenium 0.055 0.005 0.050 109 85 115 Client: CGRS Batch ID: A4037 Sample ID: MBLK Method: EPA 270.2 Prepped: Work Order:9912163 Seq No: 74626 Unit: mg/L Analyzed: 1/3/00 Project: 2755 ua Method Blank Run ID: Z5100_000103A Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal t 2 sigma RPD/RER RPDLimit Qual Selenium ND 0.005 Client: CGRS Batch ID: A4037 Sample ID: 9912163-01BMS Method: EPA 270.2 Prepped: Work Order:9912163 Seq No: 74628 Unit: mg/L Analyzed: 1/3/00 Project: 2755 ua Matrix Spike Run ID: Z5100_000103A Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupReNal t 2 sigma RPD/RER RPDLimit Qual Selenium 0.032 0.01 0.040 ND 80 75 125 Client: CGRS Batch ID: A4040 Sample ID: 9912163-01BDUP Method: EPA 204.2 Prepped: Work Order:9912163 Seq No: 74700 Unit: mg/L Analyzed: 1/4/00 Project: 2755 ua Sample Duplicate Run ID: 51002L_000104A Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefal t 2 sigma RPD/RER RPDLimit Qual Antimony ND 0.006 ND 0 20 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits Y-Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit B-Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result Page 8 of 11 • Date: 20-Jan-00 Hrr , Barringer Laboratories, Inc. BATCH QC SUMMARY REPORT 15000 W 6th Avenue Suite 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Batch ID: A4040 Sample ID: LCS Method: EPA 204.2 Prepped: Work Order:9912163 Seq No: 74681 Unit: mg/L Analyzed: 1/4/00 Project: 2755 ua Laboratory Control Spike Run ID: 5100ZL_000104A Matrix: Aqueous Analyst: JWH Analyte Result x 2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefVal x 2 sigma RPD/RER RPDLimit Qual Antimony 0.054 0.006 0.050 109 85 115 Client: CGRS Batch ID: A4040 Sample ID: MBLK Method: EPA 204.2 Prepped: Work Order.9912163 Seq No: 74682 Unit: mg/L Analyzed: 1/4/00 Project: 2755 ua Method Blank Run ID: 5100ZL_000104A Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Antimony ND 0.006 Client: CGRS Batch ID: A4040 Sample ID: 9912163-01BMS Method: EPA204.2 Prepped: Work Order: 9912163 Seq No: 74699 Unit: mg/L Analyzed: 1/4/00 Project: 2755 ua Matrix Spike Run ID: 5100ZL_000104A Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Antimony 0.015 0.006 0.020 ND 74 75 125 S Client: CGRS Batch ID: A4050 Sample ID: 9912163-01BDUP Method: EPA 279.2 Prepped: Work Order:9912163 Seq No: 75013 Unit: mg/L Analyzed: 1/4/00 Project: 2755 ua Sample Duplicate Run ID: Z5100_000104B Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupReNal x 2 sigma RPD/RER RPDLimit Qual Thallium ND 0.002 ND 0 20 Client: CGRS Batch ID: A4050 Sample ID: LCS Method: EPA 279.2 Prepped: Work Order:9912163 Seq No: 75000 Unit: mg/L Analyzed: 1/4/00 Project: 2755 ua Laboratory Control Spike Run ID: 25100_000104B Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefVal x 2 sigma RPD/RER RPDLimit Qual Thallium 0.052 0.002 0.050 104 85 115 Client: CGRS Batch ID: A4050 Sample ID: MBLK Method: EPA 279.2 Prepped: Work Order:9912163 Seq No: 74999 Unit: mg/L Analyzed: 1/4/00 Project: 2755 ua Method Blank Run ID: Z5100_000104B Matrix: Aqueous Analyst: JWH Analyte Result t 2 sigma Limit SpikeVal SpikeReNal %REC LowLimit HighLimit DupRefVal x2 sigma RPD/RER RPDLimit Qual Thallium ND 0.002 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits Y-Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X-Duplicate sample(s)c 5 times limit B-Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result Page 9 of 11 I Date: '20-Jan-00 Barringer Laboratories, Inc. BATCH QC SUMMARY REPORT 15000 W 6th Avenue Suite 300 Golden, Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Batch ID: A4050 Sample ID: 9912163-01BMS Method: EPA279.2 Prepped: Work Order:9912163 Seq No: 75012 Unit: mg/L Analyzed: 1/4/00 Project: 2755 ua Matrix Spike Run ID: Z5100_000104B Matrix: Aqueous Analyst: JWH Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Thallium 0.023 0.002 0.020 ND 115 75 125 Client: CGRS Batch ID: A4282 Sample ID: 0001093-02BDUP Method: EPA 300.0 Prepped: Work Order:9912163 Seq No: 78589 Unit: mg/L Analyzed: 1/14/00 Project: 2755 ua Sample Duplicate Run ID: IC2_000114A Matrix: Aqueous Analyst: RAB Analyte Result t 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Chloride 11 1 11 0 20 Sulfate 14 1 14 1 20 Client: CGRS Batch ID: A4282 Sample ID: 0001072-01BDUP Method: EPA 300.0 Prepped: Work Order:9912163 Seq No: 78600 Unit: mg/L Analyzed: 1/14/00 Project: 2755 ua Sample Duplicate Run ID: IC2_000114A Matrix: Aqueous Analyst: RAB Analyte Result t 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal x 2 sigma RPD/RER RPDLimit Qual Chloride 110 1 110 1 20 Sulfate 290 1 290 1 20 Client: CGRS Batch ID: A4282 Sample ID: 0001001-02DDUP Method: EPA 300.0 Prepped: Work Order. 9912163 Seq No: 78623 Unit: mg/L Analyzed: 1/14/00 Project: 2755 ua Sample Duplicate Run ID: IC2_000114A Matrix: Aqueous Analyst: RAB Analyte Result x 2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal t 2 sigma RPD/RER RPDLimit Qual Chloride 120 1 120 0 20 Fluoride 0.81 0.1 0.76 7 20 Sulfate 130 1 130 0 20 Client: CGRS Batch ID: A4282 Sample ID: LCS Method: EPA300.0 Prepped: Work Order: 9912163 Seq No: 78640 Unit: mg/L Analyzed: Project: 2755 ua Laboratory Control Spike Run ID: IC2_000114A Matrix: Aqueous Analyst: RAB Analyte Result x2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal t 2 sigma RPD/RER RPDLimit Qual Chloride 52 1 50 104 90 110 Fluoride 10 0.1 10 102 90 110 Sulfate 76 1 75 102 90 110 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits Y-Unspiked sample>4 times amount spiked .3-Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit B-Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample>10 times blank result Page 10 of 11 H ..._ t Date: 20-Jan-00 Barringer Laboratories, Inc. BATCH QC SUMMARY REPORT 15000 W 6th Avenue Suite 300 Golden, Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 Client: CGRS Batch ID: A4282 Sample ID: MBLK Method: EPA 300.0 Preppei Work Order:9912163 Seq No: 78641 Unit: mg/L Analyzed: Project: 2755 ua Method Blank Run ID: IC2_000114A Matrix: Aqueous Analyst: RAB Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal ±2 sigma RPD/RER RPDLimit Qual Chloride ND 1 Fluoride ND 0.1 Sulfate ND 1 Client: CGRS Batch ID: A4282 Sample ID: 0001093-02BMS Method: EPA 300.0 Prepped: Work Order: 9912163 Seq No: 78590 Unit: mg/L Analyzed: 1/14/00 Project: 2755 ua Matrix Spike Run ID: IC2_000114A Matrix: Aqueous Analyst: RAB Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal t 2 sigma RPD/RER RPDLimit Qual Chloride 21 1 10 11 99 75 125 Sulfate 22 1 10 14 89 75 125 Client: CGRS Batch ID: A4282 Sample ID: 0001072-01BMS Method: EPA 300.0 Prepped: Work Order:9912163 Seq No: 78601 Unit: mg/L Analyzed: 1/14/00 Project: 2755 ua Matrix Spike Run ID: IC2_000114A Matrix: Aqueous Analyst: RAB Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal t2 sigma RPD/RER RPDLimit Qual Chloride 120 1 10 110 117 75 125 Sulfate 310 1 10 290 138 75 125 Y Client: CGRS Batch ID: A4282 Sample ID: 0001001-02DMS Method: EPA 300.0 Prepped: Work Order: 9912163 Seq No: 78624 Unit: mg/L Analyzed: 1/14/00 Project: 2755 ua Matrix Spike Run ID: IC2_000114A Matrix: Aqueous Analyst: RAB Analyte Result ±2 sigma Limit SpikeVal SpikeRefVal %REC LowLimit HighLimit DupRefVal t 2 sigma RPD/RER RPDLimit Qual Chloride 120 1 10 120 82 75 125 Fluoride 11 0.1 10 0.76 99 75 125 Sulfate 140 1 10 130 88 75 125 Qualifiers: ND-Not detected at the reporting limit R-RPD outside accepted recovery limits Y-Unspiked sample>4 times amount spiked J-Analyte detected below quantitation limits X-Duplicate sample(s)<5 times limit B-Analyte detected in the associated method blank E-Value above quantitation range S-Spike recovery outside accepted recovery limits Z-Sample> 10 times blank result Page 11 of 11 Hello