My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2008-09-19_REVISION - M1997032
DRMS
>
Day Forward
>
Revision
>
Minerals
>
M1997032
>
2008-09-19_REVISION - M1997032
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
6/15/2021 10:32:51 AM
Creation date
10/28/2008 12:19:01 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1997032
IBM Index Class Name
REVISION
Doc Date
9/19/2008
Doc Name
Address designated mining operation status
From
Denison Mines
To
DRMS
Type & Sequence
AD1
Email Name
RCO
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
29
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
Christy Woodward <br />September 17, 2008 <br />Page 8 <br />completion of 5 consecutive quarters of groundwater quality data. Therefore, available data <br />will be included in the hydrogeological report and the additional data will be compiled and <br />provided to the state when it becomes available. Water quality data will continue to be <br />collected from the downgradient groundwater monitoring wells until the objectives of this <br />work plan are achieved. <br />The intent of installing groundwater wells below the water table is to provide free-flowing <br />wells. Groundwater flow at the Sunday Mines Group is strongly controlled by local <br />discontinuities in the bedrock such as bedding planes and fractures. These discontinuities <br />may cause local perturbations in the groundwater table. A contingency has been included in <br />the proposed monitoring well design to facilitate sampling using a peristaltic pump in the <br />event that the wells are not free flowing. <br />Monitoring well samples will be analyzed in the field for pH, electrical conductivity, <br />dissolved oxygen, temperature, and oxidation-reduction potential. As recommended by <br />DRMS, groundwater quality will be evaluated based on samples submitted for all <br />constituents listed under the Colorado Department of Public Health and Environment <br />(CDPHE) Regulation 41 (groundwater), minus the exceptions noted below. The CDPHE <br />Regulation 41 constituents are listed in Fable 3. <br />DRMS recommended (DRMS 2008b) that various constituents from these CDPHE regulations <br />be omitted from the analyte list, which include total'coliforms, asbestos, free cyanide, <br />chlorophenol, color, corrosivity, foaming agents, odor, and phenol. In addition, DRMS <br />recommended that hardness, conductivity, dissolved oxygen, and oxidation reduction <br />potential be added to the analyte list. Tritium has-been added to the groundwater analyte list <br />in order to provide information regarding the age of the groundwater and the degree of <br />connection between surface water and groundwater. The complete analyte list is shown as <br />Table 2. Upon review of initial groundwater quality data by DRMS and Denison, parameters <br />that repeatedly show concentrations below detection limits may be dropped from the analyte <br />list, p&-DRMS' recommendations. <br />Field Activities, Methods, and Procedures <br />This section discusses equipment and procedures for groundwater well installation and <br />groundwater sampling. <br />Equipment and Supplies <br />Groundwater Monitoring Well Installation <br />The following is a list of supplies needed to install groundwater monitoring wells: <br />¦ 350 feet of 1 inch schedule 80 PVC pipe, 5-foot long flush joint threaded sections <br />¦ 25 feet of 1 inch schedule 80 PVC slotted screen pipe, 5-foot long flush joint threaded <br />sections
The URL can be used to link to this page
Your browser does not support the video tag.