The URL can be used to link to this page

Home My WebLink AboutDRC-2009-007620 - 0901a068803619e1Page 1 of 1 Dean Henderson - Seeps and Springs Sampling Plan From: To: Date: Subject: CC: Attachments: Steve Landau <Slandau@denisonmines.com> Dane Finerfrock <DFINERFROCK @utah.gov> 3117n0A910:17 AM Seeps and Springs Sampling Plan Dean Henderson <DFIENDERSON @ utah. gov>, David Frydenlund <DFrydenlund @ denisonmines.com> Figurl 1 Seep & Springs.pdf; 3-17-09 Final Seeps and Springs.pdf; 3-t7-09 Redline Seep.pdf Dear Mr. Finerfrock., please find enclosed the revised Sampling Planfor Seeps and Springs In the Vicinity of the White Mesa MiIt. Thisrevision of the plan incorporaies the modifications requested in correspondence authored by Mr. Dean Henderson of Mirch 4,2W9. If you should have any questions regarding this plan, please contact me. Sincerely, Steven D. Landau Steve Landau {trtanager, ff nvi rmwfianta! Af{airs t: (303) 38e-4132 | f : (303) 3Be-4125 1050 17th Street, Suite 950, Denver, CO 80265 nENtsoN MINE$ (u$A) conp www.denisonmines.com This e-mail is intended for exclusive use the person(s) mentioned as the recipient(s). This message and any attached fites with it are contidential and may contain priviteged or proprietary intormition. n you ire not t'it6 intendea recipitnt(il ileasb deete this meisage and notity the sender. You may not use, distrhute print or copy this message if you are not the intended recipient(s). file://C:\Documents and Settings\Dhenderson\Local Settings\Temp\XPgrpwise\498F78C6... 4ll4lz0rc OfiC-2009-007620 Sampling Plan for Seeps and Springs In the Vicinity of the White Mesa Uranium Mill Revision: 0 March 17,2009 Page 1 of6 Prepared by: Denison Mines (USA) Corp. 1050 17*" Street, Suite 950 Denver, CO 80265 March, 2009 Revision: 0 March 17.2009 I'fige 2 of 6 Table of Contents 1.0 Introduction and Objectives 2.0 Seeps and Springs Sampling Locations 3.0 Frequency and Timing of Sampling 4.0 Analytical Parameters 5.0 Sample Collection IVfethodology 6.0 Reporting Figures Figure I- Seeps and Springs Sampling Locations Tables lable I- Seeps and Springs Sampling Locations Attachments Attachment A- Field Data Record Sheet Revision: 0 March 17,2009 piige 3 ore 1.0 Introduction and Objectives This work plan describes the procedures for sampling seeps and springs in the area around the White Mesa Uranium Mill site near Blanding, Utah. The work plan is a part of the requirements of Groimdwater Discharge Pemiit ("GWDP") No. UGW370004, initially issued to International Uranium (USA) Corporation (now Denison Mines (USA) Corp., "DUSA") on March 8, 2005. The current GWPD, issued on March 17, 2008, lists the requirements for Seeps and Springs at Part 1 .H.9. 2.0 Seeps and Springs Sampling Locations The sampling locations were selected to correspond with those seeps and springs sampled for the initial site characterization perfonned for the Environmental Assessment and as shown on Plate 2.6-10 ofthe 1978 Environmental Report (the "ER, Dames & Moore, January 30, 1978), plus additional sites located by lUSA (now DUSA), the BLM and Ute Mountain Tribal representatives. Each location was initially surveyed with a hand held Global Positioning System (GPS). In order to confirm these locations, a formal land survey will be conducted under the direction of, and be certified by, either a Utah licensed Professional Engineer or Land Surveyor. The Survey will be in accordance to the commonly accepted professional standards and methods for land suiveyors. The sutA'ey will include Slate plan Coordinates (northings and eastings) and vertical elevations. The surveyed coordinates and elevations ofthe seeps and springs shall be within I foot ofthe highest point ofthe saturated seepage face on the day ofthe survey. This seep/spring survey data shall be included in the 3'^'^ quarter Routine Groundwater Monitoring Report due on December 1, ofeach year. The locations are lisied below in Table 1 and are shown on Figure I attached. Table 1 Seeps and Springs Sampling Locations Name Corral Canyon Seep Corrals Seep Ruin Spnngs Cottonwood Seep Westwater Seep Location N37° 33.119' W109*29.2ir N3r* 29.609' W109" 29.600' N37" 30.100' W109''31.397' N37''31.3Sr Wl 09" 32.276' N37''31.978' W109''31.394' Elevation, feet above MSL 5417 5166 5172 5014 5272 Revision' 0 March 17,2009 Page 4 ol" 6 Name Entrance Seep Location N37'32.031' VV109''29.555' tllevation, feet above MSL 5344 3.0 Frequency and Timing of Sampling Seeps and spring sampling will be conducted on an annual basis and will be scheduled between May 1 and July 15 ofeach year. This sampling period is aimed at maximizing the opportunity for flow but excludes lhe poiential for surface water influence occasioned by late summer "monsoon" conditions. Denison representatives conducted a reconnaissance visit to the locations listed in Table 1 on June 25, 2008 in order to determine the status of the listed springs and seeps and to evaluate the feasibility of physical development of these locations in order to better accommodate sampling at dry locations. It was observed at that time that water t1ow was available for sampling at Ruin Springs, Cottonwood Seep and the location named "Entrance". Alternatively, locations known as Corral Canyon Seep and Corrals Seep vvere entirely dry and the Westwater Seep exhibited only barely moist soil (largely due to its shaded location benealh a rock outcrop). It is Denison's observation tiial physical development is infeasible at Corral Canyon Seep, Corrals Seep and Westwater Seep. These locations were so dry that flowing water would not be available for sampling even if these locations were lo be excavated for location development and sampUng purposes. However, for each annual sampling period, these sites will b visited a minimum of three times in order o attempt a sampling. Should a visit reveal a change in conditions at any of these dry locations which would warrant development opportunities, Denison will proceed with limited hand tool excavation to develop the sampling location. Should three annual visits at seeps and springs locations reveal only dry conditions, and a continued absence of physical development opportunities, a sample will not be collected and such conditions (and the inability lo sample) will be recorded on the sarnpiing field sheet and reported along with the results of collected samples for that annual sampling event. DUSA will provide at least 15 days notice of site visits for sampling purposes during periods of time when actively flowing locations are likely in order to allow the Hxecutive Secretary to collect split water quality samples ofthe seeps and springs. 4.0 Analytical Parameters Satnples will be analyzed for all ground water compliance parameters found on Table 2 ofthe GWDP, including analysis ofthe volatile compounds included in the Table and with the addition of semi-volatile organic compounds which are not included in Table 2. The lab procedures ulilized lo conduct the analyses of parameters listed in Table 2 will be those utilized for groundwaler sampling and as shown in Section 8.2 in the Giound Water Monitoring Quality Assurance Plan (QAP). For semi-volatile compounds (not lisied in Table 2), the anal>'tical procedures will be those indentified in EPA Method 8270. Reporting limits utilized by the laboratory will be required to not exceed the Ground Water Standards. In addition to these laboratory parameters, the pH. temperatuie and conductivity ofeach sample will be measured and recorded in the field. Laboratories Revision: 0 Miirch 17,2009 Page 5 ofb selected by DUSA to perfomi analyses of seeps and springs samples will be required lo bc certified by the Slale of Utah in accordance with Utah Administrative Code (UAC) R317-6.6.12.A. 5.0 Sample Collection Methodology The seeps and springs in the vicinity ofthe White Mesa Mill generally originate form a perched groundwater zone located in a low-yield formation. As noted above, during any sampling event some or all ofthe seeps or springs may have either no flow, very limited flow, or insufficient flow to provide the necessary sainple volume for all ofthe required sample analysis. Toward this end, the sampling period and repeat visit protocol outlined in Section 3.0 above have been selected by Denison so as to maximize the ability to collect any groundwater available for sampling at these locafions. Such limited flow, and seep or spring environment in general, may impact the quality ofany samples that are obtained. Samples will be collected and containerized in the order of the Parameters listed in Table 2 ofthe GWDP, Should flow be limited to where all containers can not be filled on the inilial sanipling attempt then repeated sampling attempts will be made at least one time per day until sufficient volume of water is eollected lo fill all the required containers, or until instructed otherwise in writing by the Executive Secretary. . Whenever possible, sample bottles, particulariy those for VOC's and SVOCs shall bc filled direcfiy from the seep or spring as a means of limifing volafilization of these parameters during sample collection and handling. If the flow environment is such that this is not possible, then a clean stainless steel ladle shall be used to collect water until a sufficient volume is contained in the ladle for transfer to the sample bottle. Similarly, larger volume samples for metals analyses wil! be collected using the ladle. The stainless steel ladle and any other sampling equipment will be subjected to decontamination procedures for sampling equipment between seep and springs sample locations as outlined in Secfion 6.2.5 ofthe QAP. . The seep and Springs sample events will be subject to the currentiy approved White Mesa Mill Ground water monitoring Quality Assurance Plan (QAP). Water quality QC samples will be in accordance with Secfion 4.3 ofthe QAP and any corrective actions identified will follow the requirements as outlined in Secfion 10 ofthe QAP. In addition, samples analyzed for heavy metals, all other non-radiologies (i.e. fluoride, general inorganics, TDS, total cafions and anions) and gross alpha activity will be filtered with a 0.45 micron filter and preserved by the addition of appropriate preservative for the analytical technique the samples will be subjected to and stored at 4^* C or less prior to laboratory analysis. These data will bereported as dissolved concentrations by the laboratory. Revision: 0 Mnroli 17,2009 Pai^e 6 uf 6 6.0 Reporting DUSA will collect seeps and springs samples during the first available sampling period (see section 3.0 above) subsequent to approval of this plan. Each report will: 1) document the sampling event by means of providing the field sheets recorded at the time of sampling; 2) transmit copies of all field measurements and laboratory resuUs; 3) provide a water table contour map that nicludes water table elevation of al! groundwater monitoring wells at the facility and the elevafions of the phreafic surfaces observed at each ofthe seeps and springs sampled; and 4) provide an evaluafion and interpretation of the gi'oundwater quality data collected. • The annual seeps and springs monitoring report that will be included with the 3^ quarter Routine Groundwaler Monitoring Report due on December I, of each year. • The seeps and springs water table contour map will include all water level data measurements from all monitoring wells at the site from the 3'^ quarter groundwater monitoring event for each year. • The seeps and springs waler tabic contour map shall be at the map scale such that all seeps and springs listed in the PJan and monitor wells at the site may be seen on one map. Attachment A Field Data Recnrd-Seeps and Spriimn Smnpiitiu Time und Date of Sample Event: Seep or Spring Lccfttion: SampHng Personnel: Weather Conditions at time of Sampling; Sampling Rquipment Utilized: Stimpling Method Utilized: Estimated Seep of Spring Flow Rate: Parameteis to he Analyzed at the Laboratory: Field Parameter McHSuremcnls: "PH -Temperature -Conductivity [(7/6/2009^Dean Henderson nnurFT^i^fc ' i i|illlii| |iill Page 1 i I (Ml [>, I J. ' •orf^'' >.. ft I J^a -I I 1 I '^'^J • .. K«iaSBS ,3\ *1 i....wS.. ...•'.*••/ rrr? fl '1! II