' I, ANALYTICAL RESULTS Enseco I

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I Enseco Incorporated I· l ·Z,F · . II, II· I I I I I I I I I I I I- ANALYTICAL RESULTS FOR : .1 .J "'" \ ' ff Enseco U.S. GEOLOGICAL SURVEY ENSECO-RMAL NO. 011249 SEPTEMBER 29, 1990 , I. KAFB1051 llllllllllllllllllllllllllllllllllllllllllllllllll

Rocky Mountain Analytical Laboratory J!!!! ANALYTICAL RESULTS ,Enseco . . FOR U.S. GEOLOGICAL SURVEY ENSECO-RMAL NO. 011249 SEPTEMBER 29, 1990 -- Randall ) . Reviewed by: / ------··- Enseco Incorporated -!955 Yarrow Street Awada Colorado 80002 J03/42i-6611 Fax: 303/-131-7171

---------------------· ·-------------; Enseco A Coming Company Introduction This report presents the analytical results as well as supporting information to aid in the evaluation and interpretation of the data and is arranged in tile following order: o o o o Sample Description Information Analytical Test Requests Analytical Results Quality Control Report Sample Description Information The Sample Description Information lists all of the samples received in this project LJJcther with the internal laboratory identification number assigned for cJch sample. Each project received at Enseco - RMAL is assigned a unique six digit number. Samples within the project are numbered sequentially. "Tl:e laboratory identification number is a combination of the six digit p: t code and the sample sequence number. Also give:11 in the Sample Description Information is the Sample Type (matrix), D::te of Sampling (if known) and Date of Receipt at the laboratory. Analytical Test Requests The Ancii ,. each sample. to conform , Test Requests lists the analyses that were performed on Custom Test column indicates where tests have been modified specific requirements of this project. ; .:il c

- - - - - - - - - - - - - - - - - - -----------·- Enseco A Commg Company SAMPLE DESCRIPTION INFORMATION for U.S. Geological Survey Lab ID Client ID Matrix 011249-0001-SA 011249-0002-SA 011249-0003-SA 011249-0004-SA 011249-0005-SA 011249-0006-SA 011249-0007-SA 011249-0008-SA KAFB060210-2 KAFB060211-2 KAFB060212-2 KAFB060213-2 KAFB060214-2 KAFB060215-2 KAFB090107-2 KAFB090108-2 AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS Sampled Received Date Time Date 05 05 05 05 05 05 06 06 SEP SEP SEP SEP SEP SEP SEP SEP 90 90 90 90 90 90 90 90 10:57 12:17 13:31 15:46 17:52 18:15 12:50 12:50 07 07 07 07 07 07 07 07 SEP SEP SEP SEP SEP SEP SEP SEP 90 90 90 90 90 90 90 90

- - - - - - - - - · - - - - - - - - · ·----------.· Enseco -. .- A Coming Company ANALYTICAL TEST REQUESTS for U.S. Geological Survey Lab ID: 011249 Group Code Analysis Description Custom Test? 0001 ' 0003, 0004 - 0005 A Chromium, Furnace AA Chromium, Furnace AA (Total) Prep - Total Metals, ICP N N N 0002 B Chromium, Furnace AA Chromium, Furnace AA fTotal) Prep - Total Metals, CP ICP Metals Dissolved) ICP Metals Total) N N N Total Organic Carbon (TOC) Total Organic Halogen (TOX) Nitrate Plus Nitrite Chromium, Furnace AA Chromium, Furnace AA iTotal) Prep - Total Metals, CP ICP Metals Dissolved) ICP Metals Total) N N N N N N Total Organic Carbon (lUC Total Organic Halogen (TO ) Nitrate Plus Nitrite Chromium, Furnace AA Chromium, Furnace AA (Total) Prep - Total Metals, ICP N N N N N N 0006 0007 - 0008 c D y y y y

- - - - - - - - - - - - - - - - · ·---------;:S ·Enseco - A Commg Company Analytical R .:ts The an.:ti. 11 results for this project are presented in the following data table includes sample identification information, and .,1J appropriate, dates sampled, received, authorized, prepared when availa" and analyzec'. :11e authorization data is the date when the project was defined by the clier:: .,cr1 that laboratory work could begin. data tables. .:ii Data shec s contain a listing of the parameters measured in each test, the analytical rc Jlts and the Enseco reporting limit. Reporting limits are adjusted to' ; c ct dilution of the sample, when appropriate. Solid and waste , ted on an "as received" basis, i.e. no correction is made for samples are moisture cc Enseco.s no longer routinely blank-correcting analytical data. Uncorrected . ytical results are reported, along with associated blank results, fo . organic and metals analyses. Analytical results and blank results are r , r' ted for conventional inorganic parameters as specified in the method. Thie , . l icy is described in detail in the Enseco Incorporated Quality Assurance P: .:n Plan for Environmental Chemical Monitoring, Revision 3.3, May, 1989. 1 u 0 The res . which are i from the Standard Enseco QA/QC Program, which generates data . ,Jent of matrix effects, is provided subsequently.

- -·- - Enseco A Coming Company Metals Total Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060210-2 011249-0001-SA AQUEOUS Sampled: 05 SEP 90 07 SEP 90 Prepared: See Below Parameter Result Chromium Units 0.0062 mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Limit Method O.OO!iO 7191 20 SEP 90 25 SEP 90 ND Not detected NA Not applicable Reported By: Mark Brundege Approved By: Prepared Analyzed Date Date Dave Roberts

- - - - - - - - - - - - - - - - - - · ·-----------· ·Enseco A Coming Company Metals Total Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060211-2 011249-0002-SA Sampled: 05 SEP 90 AQUEOUS 07 SEP 90 Prepared: See Below Result Parameter 0.050 NO NO 2.2 NO 0.054 NO NO NO 0.35 Chromium Cobalt Copper Iron Lead Manganese Molybdenum Nickel Vanadium Zinc Units mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Received: 07 SEP 90 Analyzed: See Below Relorting Analytical imit Method o.ooso 0.010 0.020 0.10 0.050 0.010 0.020 0.040 0.010 0.020 7191 6010 6010 6010 6010 6010 6010 6010 6010 6010 20 20 20 20 20 20 20 20 20 20 NO Not detected NA Not applicable Reported By: Sandra Jones Approved By: Prepared Analyzed Date Date Dave Roberts SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP 90 90 90 90 90 90 90 90 90 90 25 24 24 24 24 24 24 24 24 24 SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP 90 90 90 90 90 90 90 90 90 90

- - - - - - - - - - - - - - - - - - - -----------·· ;·Enseco . - A Coming Company Metals Total Metals Client Name: Client IO: Lab ID: Matrix: Authorized: U. S. Geo 1og i ca 1 Survey KAFB060212-2 011249-0003-SA AQUEOUS 07 SEP 90 Parameter Result Chromium 0.037 Sampled: 05 SEP 90 Prepared: See Below Units mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Limit Method 0. 00! 0 7191 20 SEP 90 25 SEP 90 ND Not detected NA Not applicable Reported By: Mark Brundege Approved By: Prepared Analyzed Date Date Dave Roberts

- - - - - - - - - · - - - - - - - - : :-S:·Enseco - Metals A Coming Company Total Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060213-2 011249-0004-SA AQUEOUS Sampled: 05 SEP 90 07 SEP 90 Prepared: See Below Parameter Result Chromium 0.042 Units mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Method Limit o.ooso 7191 20 SEP 90 25 SEP 90 ND Not detected NA Not applicable Reported By: Mark Brundege Approved By: Prepared Analyzed Date Date Dave Roberts

-- -· Enseco A Coming Company Metals Total Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060214-2 011249-0005-SA AQUEOUS Sampled: 05 SEP 90 07 SEP 90 Prepared: See Below Parameter Result Chromium 0.024 Units mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Limit Method o.ooso 7191 20 SEP 90 25 SEP 90 ND Not detected NA Not applicable Reported By: Mark Brundege Approved By: Prepared Analyzed Date Date Dave Roberts

- - - - - - - - - - - - - - - - - - - - , , . ·Enseco ·- Metals A Coming Company Total Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060215-2 011249-0006-SA AQUEOUS Sampled: 05 SEP 90 Prepared: See Below 07 SEP 90 Parameter Result 0.045 ND 0.035 0.65 ND ND NO NO NO 0.48 Chromium Cobalt Copper Iron Lead Manganese Molkbdenum Nie el Vanadium Zinc Units mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Received: 07 SEP 90 Analyzed: See Below Reeort·i ng Analytical imit Method 0.0050 7191 0.010 6010 0.020 6010 0.10 6010 0.050 6010 0.010 6010 0.020 6010 0.040 6010 0.010 6010 0.020 6010 20 20 20 20 20 20 20 20 20 20 ND Not detected NA Not applicable Reported By: Sandra Jones Approved By: Prepared Analyzed Date Date Dave Roberts SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP 90 90 90 90 90 90 90 90 90 90 25 24 24 24 24 24 24 24 24 24 SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP 90 90 90 90 90 90 90 90 90 90

- - - - - - - - - - - - - - - - - - - - · ·------------· Enseco A Coming Company Metals Total Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB090107-2 011249-0007-SA AQUEOUS Sampled: 06 SEP 90 07 SEP 90 Prepared: See Below Parameter Result Units Chromium ND mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Method Limit 0.00!50 7191 20 SEP 90 25 SEP 90 ND Not detected NA Not applicable Reported By: Mark Brundege Approved By: Prepared Analyzed Date Date Dave Roberts

- - - - - - - - - - - - - - - - - - - - ------------.: 0 Enseco ·- A Coming Company Metals Total Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB090108-2 011249-0008-SA Sampled: 06 SEP 90 AQUEOUS 07 SEP 90 Prepared: See Below Result Parameter 0 .12 Chromium Units mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Method Limit 0.010 7191 20 SEP 90 25 SEP 90 ND Not detected NA Not applicable Reported By: Mark Brundege Approved By: Prepared Analyzed Date Date Dave Roberts

- - - - - - - - - - - - - - - - - - - , , ,, Enseco - Metals A Coming Company Dissolved Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060210-2 011249-0001-SA AQUEOUS Sampled: 05 SEP 90 07 SEP 90 Prepared: See Below Parameter Result Units Chromium ND mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Method Limit 0.0050 7191 NA ND Not detected NA Not applicable Reported By: Scott Moroschan Approved By: Prepared Analyzed Date Date Dave Roberts 11 SEP 90

;Enseco - Metals :\ Coming Company Dissolved Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060211-2 011249-0002-SA Sampled: 05 SIEP 90 AQUEOUS 07 SEP 90 Prepared: See Below Parameter Result 0.013 ND ND 0.36 ND ND ND ND ND 0.13 Chromium Cobalt Copper Iron Lead Manganese Molybdenum Ni eke l Vanadium Zinc Units mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Received: 07 SEP 90 Analyzed: See Below Relorting Analytical imit Method 0.0050 7191 0.010 6010 o.o:w 6010 0 .10 6010 0.050 6010 O.OllO 6010 0. 0( 0 6010 0.040 6010 0.010 6010 o. o o 6010 NA NA NA NA NA NA NA NA NA NA ND Not detected NA Not applicable Reported By: Sandra Jones Approved By: Prepared Analyzed Date Date Dave Roberts 11 25 25 25 25 25 25 25 25 25 SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP 90 90 90 90 90 90 90 90 90 90

- - - - - - - - - - - - - - - - - - - , ,------------ Enseco A Coming Company Metals Dissolved Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060212-2 011249-0003-SA AQUEOUS 07 SEP 90 Sampled: 05 SEP 90 Prepared: See Below Parameter Result Units Chromium ND mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Method Limit 0.0050 NA 7191 ND Not detected NA Not applicable Reported By: Scott Moroschan Approved By: Prepared Analyzed Date Date Dave Roberts 11 SEP 90

- - - - - - - - - - - - - - - - - - - · ·-----------··· Enseco A Coming Company Metals Dissolved Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060213-2 011249-0004-SA AQUEOUS 07 SEP 90 Sampled: 05 SEP 90 Prepared: See Below Parameter Result Units Chromium ND mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Method Limit 0.010 NA 7191 ND Not detected NA Not applicable Reported By: Mark Brundege Approved By: Prepared Analyzed Date Date Dave Roberts 18 SEP 90

---------------------· ·------------:· 1Enseco - Metals A Coming Company Dissolved Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060214-2 011249-0005-SA AQUEOUS Sampled: 05 SEP 90 07 SEP 90 Prepared: See Below Parameter Result Units Chromium ND mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Method Limit 0. 00!50 7191 NA ND Not detected NA Not applicable Reported By: Mark Brundege Approved By: Prepared Analyzed Date Date Dave Roberts 18 SEP 90

S ·Enseco - Metals A Coming Company Dissolved Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060215-2 011249-0006-SA AQUEOUS Sampled: 05 SEP 90 07 SEP 90 Prepared: See Biel ow Parameter Result Chromium Cobalt Copper Iron Lead Manganese Molybdenum Ni eke l Vanadium Zinc ND ND ND ND ND ND ND ND ND 0.088 Units mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Received: 07 SEP 90 Analyzed: See Below Relortiing Analytical . imit Method 0.00!50 0.010 0.020 0.10 0.050 0.010 0.020 0.040 0.010 0.020 7191 6010 6010 6010 6010 6010 6010 6010 6010 6010 NA NA NA NA NA NA NA NA NA NA ND Not detected NA Not applicable Reported By: Sandra Jones Approved By: Prepared Analyzed Date Date Dave Roberts 18 25 25 25 25 25 25 25 25 25 SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP 90 90 90 90 90 90 90 90 90 90

-----------. 1Enseco - Metals A Coming Company Dissolved Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB090107-2 011249-0007-SA AQUEOUS Sampled: 06 SEP 90 07 SEP 90 Prepared: See Below Parameter Result Units Chromium ND mg/l Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Method Limit 0. 00!50 7191 NA ND Not detected NA Not applicable Reported By: Mark Brundege Approved By: Prepared Analyzed Date Date Dave Roberts 18 SEP 90

- - - - - - - - - - · - - - - - - - - - · ·-----------.;S Enseco - Metals A Coming Company Dissolved Metals Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB090108-2 011249-0008-SA Sampled: 06 SEP 90 AQUEOUS 07 SEP 90 Prepared: See Below Parameter Result Chromium 0.037 Units mg/L Received: 07 SEP 90 Analyzed: See Below Reporting Analytical Limit Method 0.0050 7191 NA ND Not detected NA Not applicable Reported By: Mark Brundege Approved By: Prepared Analyzed Date Date Dave Roberts 18 SEP 90

----------·----------------------: ;·Enseco A Coming Company General Inorganics Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB060215-2 011249-0006-SA AQUEOUS Sampled: 05 SEP 90 07 SEP 90 Prepared: See Below Parameter Result Nitrate plus Nitrite 23.9 Total Organic Carbon 0.69 Total Organic Halogen as Cl ND Units mg/L mg/L ug/L Received: 07 SEP 90 Analyzed: See Below ReEorting Analytical imit Method 1.0 0.50 30.0 353.2 9060 NA NA 17 SEP 90 17 SEP 90 9020 NA 18 SEP 90 ND Not detected NA Not applicable Reported By: Steve Pope Prepared Analyzed Date Date Approved By: Toni Stovall

- - - - - - - - - - - - - - - - - - , ,----------· ;·Enseco A Coming Companv General Inorganics Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAF8090107-2 011249-0007-SA Sampled: 06 SEP 90 AQUEOUS Prepared: See Below 07 SEP 90 Result Parameter Nitrate plus Nitrite 0.14 Total Organic Carbon ND Total Organic Halogen as Cl ND Units mg/L mg/L ug/L Received: 07 SEP 90 Analyzed: See Below ReEort·i ng Analytical imit Method 0.10 0.50 30.0 353.2 9060 NA NA 17 SEP 90 17 SEP 90 9020 NA 18 SEP 90 ND Not detected NA Not applicable Reported By: Steve Pope Prepared Analyzed Date Date Approved By: Toni Stovall

- - Enseco A Coming Company General Inorganics Client Name: Client ID: Lab ID: Matrix: Authorized: U.S. Geological Survey KAFB090108-2 011249-0008-SA AQUEOUS Sampled: 06 SEP 90 07 SEP 90 Prepared: See Below Parameter Result Nitrate plus Nitrite 3.4 Total Organic Carbon 1.1 Total Organic Halogen as Cl ND Units mg/L mg/L ug/L Received: 07 SEP 90 Analyzed: See Below Relorting Analytical Method imit 0.20 0.50 30.0 353.2 9060 NA NA 17 SEP 90 17 SEP 90 9020 NA 18 SEP 90 ND Not detected NA Not applicable Reported By: Steve Pope Prepared Analyzed Date Date Approved By: Toni Stovall

- - - - - - - - - - - - - - - - - - · ·-----------:: ;·Enseco A Coming Companv Qua l i ty Con The Ens: . ensure the monitoring include the analytical :. the precisi· rigorous sy:. In addi'. certificat· frequent 3· Laboratory and Inorg:; Corps of E and Florid The st. 1 \ I · ,,, sults .:;oratories operate under a vigorous QA/QC program designed to ,,Lion of scientifically valid, legally defensible data by ::spect of laboratory operations. Routine QA/QC procedures f approved methodologies, independent verification of .,.:·ds, use of duplicate Laboratory Control Samples to assess . , accuracy of the methodology on a routine basis, and a A data review. . , : he Enseco laboratories maintain a comprehensive set of both state and federal governmental agencies which require lf blind audit samples. Enseco - Rocky Mountain Analytical : fied by the EPA under the EPA/CLP program for both Organic .:,scs, under the USATHAMA (U.S. Army) program, by the Army ., and the states of Colorado, New Jersey, New York, Utah, ; others. . , .,"1 lJboratory QC package is designed to: .lJblish a strong, cost-effective QC program that ensures the . : ct t i on of s c i en t if i c a 1 l y va l i d , l e g a l l y def en s i b l e dat a .ss the laboratory's performance of the analytical method . J control limits generated with a well-defined matrix .ijlish clear-cut guidelines for acceptability of analytical ,so that QC decisions can be made immediately at the bench, 41 ide 1 .·:.: a standard set of reportables which assures the client quality of his data.

--------------------- ·-------------·· Enseco - The Ensr · of an anal · at frequen 1., which is s i' · depending 11. to duplicat . homogeneous These limit. any given cl A Corning Company ,,roqrarn is based upon monitoring the precision and accuracy . u1od by analyzing a set of Duplicate Control Samples (DCS) -Jcfined intervals. Each DCS is a well-characterized matrix i Lh target compounds at 5-100 times the reporting limit, , methodology being monitored. The purpose of the DCS is not Z1i11ple matrix, but rather to provide an interference-free, from cihich to gather data to establish control limits. :.c.:d to determine whether data generated by the laboratory on · ;1 control. Control historicci1 for preci DCS result standard cl consistenc basis. accuracy (percent recovery) are based on the average, . covery /- 3 standard deviation units. Control limits : ive Jercent difference) range from 0 (identical duplicate average, historical relative percent difference 3 ,Jr1its. These control limits are fairly narrow based on the iLJtrix being monitored and are updated on a quarterly For ea in the fom matrix tha compounds sample lo uf samples analyzed, an additional control measure is taken Accuracy f 1 01' .;:11gle Control Sample (SCS). The SCS consists of a control ,,cd with either representative target compounds or surrogate . to the method being used. An SCS is prepared for each . the DCS pair are not analyzed. SCS is measured by Percent Recovery. Measured Concentration % R. x 100 Actual Concentration Precision : . . ; 111easured by Relative Percent Difference (RPO). ,11centration DCSl - Measured Concentration DCS2 RPO I .ccntration OCSl Measured Concentration DCS2)/2 x 100

- - - - - - - - - - - - - - - - - ----------· ·Enseco A Coming Company All Scli'. QC lot nu;; days, may i i nformat i o: with each ( from the Q. lots. The r, reported i ri lyzed concurrently by the same test are assigned the same ccts which contain numerous samples, analyzed over several . iple QC lot numbers associated with each test. The QC .0llows includes a listing of the QC lot numbers associated , ,,;,p-1 es reported, DCS and SCS (where applicable) recoveries J ociated with the samples, and control limits for these :s reported by test code, in the order that the tests are .,lytical results section of this report.

··IS;·Enseco - A Coming Company QC LOT ASSIGNMENT REPORT Metals Analysis and Preparation Laboratory Sample Number QC Matrix QC Category QC Lot Number (DCS) 011249-0001-SA 011249-0001-SA 011249-0002-SA 011249-0002-SA 011249-0002-SA 011249-0002-SA 011249-0003-SA 011249-0003-SA 011249-0004-SA 011249-0004-SA 011249-0005-SA 011249-0005-SA 011249-0006-SA 011249-0006-SA 011249-0006-SA 011249-0006-SA 011249-0007-SA 011249-0007-SA 011249-0008-SA 011249-0008-SA AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS CR-FAA-AD CR-FAA-AT CR-FAA-AD CR-FAJ,-AT ICP-AD ICP-AT CR-FAA-AD CR-FAA-AT CR-FAA-AD CR-FAJ,-AT CR-FAJ,-AD CR-FAA-AT CR-FAA-AD CR-FAJ\-AT ICP-AD ICP-AT CR-FAJl-AD CR-FAA-AT CR-FAA-AD CR-FAtl-AT 11 20 11 20 25 20 11 20 18 20 18 20 18 20 25 20 18 20 18 20 SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP SEP 90-A 90-A 90-A 90-A 90-A 90-M 90-A 90-A 90-D 90-A 90-D 90-A 90-D 90-A 90-A 90-M 90-D 90-A 90-D 90-A QC Run Number (SCS/BLANK) 20 SEP 90-A 20 SEP 90-A 20 SEP 90-M 20 SEP 90-A 20 SEP 90-A 20 SEP 90-A 20 SEP 90-A 20 SEP 90-M 20 SEP 90-A 20 SEP 90-A

., ·Enseco A Coming Company DUPLICATE CONTROL SAMPLE REPORT Metals Analysis and Preparation Analyte Concentration Spiked Measured DCSl DCS2 AVG Accuracy Average{%} DCS Limits Precision (RPD) DCS Limit Cate ory: CR-FAA-AD Matrix: AQUEOUS QC Lot: 11 SEP 90-A Concentration Units: mg/L Chromium 0.02 0.0191 0.0188 0.0190 0.2 0.200 0.208 0.204 2.0 0.5 0.5 2.0 0.05 0.05 100 0.2 0.5 0.25 1.0 0.5 50 0.5 0.5 1.90 0.455 0.447 1.85 0.0455 0.0449 93.9 0.184 0.447 0.239 0.938 0.441 48.0 0.452 0.455 49.3 0.0451 95.3 0.468 0.552 1.91 0.460 0.449 1.88 0.0458 0.0408 95.5 0.187 0.453 0.241 0.947 0.442 48.7 0.460 0.459 47.4 0.0451 94.6 0.472 0.563 1.90 0.458 0.448 1.86 0.0456 0.0429 94.7 0.186 0.450 0.240 0.942 0.441 48.4 0.456 0.457 48.3 0.0451 94.9 0.470 0.557 95 75-125 1.6 20 102 75-125 3.9 20 0.9 1.1 0.6 I. 5 0.7 9.6 I. 7 1.6 1.3 1.0 1. 0 0.2 1.5 1.8 0.9 3.9 0.0 0.7 0.9 2.0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 Category: CR-FAA-AT Matrix: AQUEOUS QC Lot: 20 SEP 90-A Concentration Units: mg/L Chromium Cate ory: ICP-AD Matrix: AQUEOUS QC Lot: 25 SEP 90-A Concentration Units: mg/L Aluminum Antimony Arsenic Barium Beryllium Cadmium Ca lei um Chromium Caba lt Copper Iron Lead Magnesium Manganese Ni eke 1 Potassium Silver Sodium Vanadium Zinc so 0.05 100 0.5 0.5 95 92 90 93 91 86 95 93 90 96 94 88 97 91 91 97 90 95 94 111 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 Calculations are performed before rounding to avoid round-off errors in calculated results.

· ;Enseco - A Coming Company DUPLICATE CONTROL SAMPLE REPORT Metals Analysis and Preparation (cont.) Analyte Concentration Measured Spiked DCSl DCS2 AVG Accuracy Precision Average(%) (RPO) DCS Limits DCS Limit Category: ICP-AT Matrix: AQUEOUS QC Lot: 20 SEP 90-M Concentration Units: mg/L Aluminum Antimony Arsenic Barium Beryllium Cadmium Ca lei um Chromium Cobalt Copper Iron Lead Magnesium Man anese Nie el Potassium Silver Sodium Vanadium Zinc 2.0 0.5 0.5 2.0 0.05 0.05 100 0.2 0.5 0.25 1.0 0.5 0.5 0.5 50 0.05 100 0.5 0.5 1.90 0.454 0. 452: 1.82: 0.0453 0 .0366i 93. 2: 0.184· 0. 448: 0.246 0.985' 0.441 47.S 0.451 0.454· 42.2 0.0427 83.1 0.466 0.472 1.94 0.471 0.470 1.89 0.0480 0.0432 96.1 0.187 0.463 0.251 0.979 0.465 49.0 0.464 0.471 43.8 0.0438 86.8 0.484 0.474 1.92 0.462 0.461 1.86 0.0466 0.0399 94.6 0.186 0.456 0.248 0.982 0.453 48.2 0.458 0.462 43.0 0.0432 85.0 0.475 0.473 0.2 0.207 0.210 0.208 so 96 93 92 93 93 80 95 93 91 99 98 91 97 92 93 86 87 85 95 95 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 2.1 3.7 3.9 3.8 5.8 17 3 .1 1.6 3.3 2.0 0.6 5.3 3.1 2.8 3.7 3.7 2.5 4.4 3.8 0.4 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 104 75-125 1. 4 20 Category: CR-FAA-AD Matrix: AQUEOUS QC Lot: 18 SEP 90-0 Concentration Units: mg/L Chromium Calculations are performed before rounding to avoid round-off errors in calculated results.

;Enseco A Coming Company METHOD BLANK REPORT Metals Analysis and Preparation Analyte Test: CR-FAA-AT Matrix: AQUEOUS QC Lot: 20 SEP 90-A QC Run: QC Run: QC Run: QC Run: Cobalt Copper Iron Lead Manganese 0.0050 ND mg/L 0.0050 ND ND ND ND ND ND ND ND ND mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 0.010 0.020 0.10 0.050 0.010 0.020 0.040 0.010 0.020 ND mg/L 0.0050 ND ND ND ND ND mg/L mg/L mg/L mg/L mg/L 0.010 0.020 0.10 0.050 0.010 20 SEP 90-A Chromium Test: ICP-AT Matrix: AQUEOUS QC Lot: 20 SEP 90-M mg/L 20 SEP 90-M Cobalt Copper Iron Lead Manganese Molybdenum Nickel Vanadium Zinc Test: CR-FAA-AT Matrix: AQUEOUS QC Lot: 20 SEP 90-A ND 20 SEP 90-A Chromium Test: ICP-AT Matrix: AQUEOUS QC Lot: 20 SEP 90-M Relorting imit 20 SEP 90-A Chromium Test: CR-FAA-AT Matrix: AQUEOUS QC Lot: 20 SEP 90-A Units Result QC Run: 20 SEP 90-M

- - - - - - - - - - - - - - - - - - - , ,-----------.; ,,Enseco - METHOD BLANK REPORT Metals Analysis and Preparation (cont.) Analyte Test: ICP-AT Matrix: AQUEOUS QC Lot: 20 SEP 90-M QC Run: Chromium Reporting Limit ND ND ND ND mg/L mg/L mg/L mg/L 0.020 0.040 0.010 0.020 ND mg/L 0.0050 20 SEP 90-M Molybdenum Nickel Vanadium Zinc Test: CR-FAA-AT Matrix: AQUEOUS QC Lot: 20 SEP 90-A Units Result QC Run: 20 SEP 90-A A Coming Company

---------·-------------------: Enseco A Coming Company QC LOT ASSIGNMENT REPORT Wet Chemistry Analysis and Preparation Laboratory Sample Number QC Matrix QC Category QC Lot Number (DCS) 011249-0006-SA 011249-0006-SA 011249-0006-SA 011249-0007-SA 011249-0007-SA 011249-0007-SA 011249-0008-SA 011249-0008-SA 011249-0008-SA AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS AQUEOUS TOC-A TOX-A N03-A TOC-A TOX-A N03-A TOC-A TOX-A N03-A 17 18 17 17 18 17 17 18 17 SEP SEP SEP SEP SEP SEP SEP SEP SEP 90-A 90-A 90-A 90-A 90-A 90-A 90-A 90-A 90-A QC Run Number (SCS/BLANK)

-- Enseco - A Coming Company DUPLICATE CONTROL SAMPLE REPORT Wet Chemistry Analysis and Preparation Analyte Concentrat ·ion Spiked Measured DCSl DCS2 AVG Accuracy Precision Average(%) (RPD) DCS Limits DCS Limit Cate ory: TOC-A Matrix: AQUEOUS QC Lot: 17 SEP 90-A Concentration Units: mg/L. Total Organic Carbon 25.0 25.3 25.3 25.3 100 95.9 93.9 94.9 3.8 3.82 3.84 3.83 101 91-1 09 0.0 20 95 80-120 2.1 20 0.5 10 Category: TOX-A Matrix: AQUEOUS QC Lot: 18 SEP 90-A Concentration Units: ug Cl/L Total Organic Halogen as Cl Category: N03-A Matrix: AQUEOUS QC Lot: 17 SEP 90-A Concentration Units: mg/L Nitrate as N 101 91-109 Calculations are performed before rounding to avoid round-off errors in calculated results.

Appendix

ENSECO ANALYTICAL SERVICES REQUEST FORM I I' f. I' 1. I Site Type (circle one) (Circle as appropriate and explain in record 5) )pecial Handling urface Water round Water Meteorological Hazardous material LK Lake ES · Estuary SP ·Spring SS . S ecial Source Field ID K A.F.5 Cld) .Z./0-Z. Field Office Bo Protect (SOSlZIPZ-(,(, 76 Collector Phone !FTSJ /31L.L DAN Sample identification . 1 , A.PJ3.0/e.0.2. 1.0.-,2,, ,0,-5, ,/.C.5,7, L-.1.--.J Montn Dav Time Montn OJ SW -- - Protect Account Time Dav Composite End Date Begin Date {,,, 6w' ,4 t.,3, 5,3, "' 0, 0, 1; Station ID or Unioue Number For Laboratory Use Only , , 9 Year USGS USGS/WRD/AJEWl"fc)(/CV SWNf/ Statton Name ile Deposition* (Circle one) 0 · WATSTORE X ·Lab File - () I ,N/'1, ,Q,3,S. State Code D1stnctl User Code t # 0. 0,1, County Code Analysis level codes and schedules , (p / H or 9 Geologic Un rt Samo1e Medium Analvs1s Status q ::u;.r,1i&ll Gs; Ftelo MllVOc ·UtB Cf G Analysis Source Hyrdo1og1c Condition Sample Type Hydro1ogrc Event PA AHeT .e.: NETf-/OP: pA.eAl"lcTEg: /\4 ETHOP: PA&41'1ETe/l: H c Tl-f O.D: PARAMereg: HETflDo: 3:JjS O DIX I I C.P 12, :P c 1a i5 / C?. os s-;:;w-;- ,,.,"1"rT--- AP SW Chain-of-Custody R.ecord PROJECTNAME K!ETLAND AfB SWHU PROJECTNO. 40353 001 P.O.NO. Received by: ( Signalure J Date Time All?80/ZNE E3Xf'/ CS:S 00010{:;. I ( ,3( ' · --- ---.,,, ---.,. - Received by: ( Signmure J Date Time Relinquished by: (Signalure J RjP i'n'd'Ja 1 lab by: rSi gna""' 1 Relinquished from lab by: ( Sig11ature) Received by: ( Sig11awre J (41&1,,r Date Time ti--1.A-.i. L- .; .1 . ().7 -.1 o o ?.:;;;3 o :."""" Date Time Comments (Only SO characters stored in NWIS) necord 5 1 \\,r /!, 1-, L-., .S,S,(S . 1,S.,T 1 Record 6 f, C. "', {.;,, 2 ,G. o, L., F1 ,c.,o p .12 ,E., ,P ,o, N, Di"'"' .s, A, Ml P, L, E; ,8,A,I ,L, ,v,D,L,U.t:JE j.hbL.'12;.131410,F,T,;, -r; -I t/1,q 0 c . 7' ) .a 6 5 8. ,V ,5 , /J.: ,M, j , t"? Ii ;:: ? . .,.h -."""'2 '--'---'--"----'-- . . . . . . . . ---' Total number of sample bottles for this request:--'Z--. 1 SHIP TO: Enseco-Rocky Mountain Analvtical 4955 Yarrow Street · Arva CO 80002 ATIENTION: (303) 421-6611 7HOHPSQ/V. 8f?FYeg.ol! HCPEVltT

ENSECO ANALYTICAL SERVICE.S REQUEST FORM (Circle as appropriate and explain in record 5) :pecial Handling Site Type (circle one) · Surface Water r Ground Water · Meteorological l-lazardous material LK ES SP SS Field ID f.!.AFBCip02 il-2. Field Office (SOSlZ Z- (, 78 US iS USGS/WteD/NewNex'ICO SWNV Station Name Pro1ect · Lake Estuary ·Spring S ecial Source Collector Phone !FTS) 13/LL DAN ile Deposition* (Circle one) Sample identification Q · WATSTORE ,4 ,3, 5,3, ' 0, 0, 1 ,k!.A.FB. 0 b, O.J. . I I - 2., X ·Lab File Station ID or Unoaue Numoer

This report presents the analytical results as well as supporting information to aid in the evaluation and interpretation of the data and is arranged in tile following order: o Sample Description Information o Analytical Test Requests o Analytical Results o Quality Control Report Sample Description Information

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