My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
REP12981
DRMS
>
Back File Migration
>
Report
>
REP12981
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 11:43:28 PM
Creation date
11/27/2007 1:04:28 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1992069
IBM Index Class Name
Report
Doc Date
2/28/2002
Doc Name
January 2002 Quarterly Monitoring Report
From
Paragon
To
DMG
Permit Index Doc Type
Hydrology Report
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.
/
16
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
<br />- Ms. Connie Davis/Aggregate Industries - F Street January 2002 QMR <br />Project Number 1001018 PlZRl~Ci~N <br />February 27, 2002 <br />Page 4 <br />collected from the site between July 2001 and January 2002 are summarized in Table 2. The <br />laboratory results for the groundwater samples collected from wells MW-1 through MW-5 <br />and EW-1 on January 29, 2002 are also summarized on Figure 4. Copies of the January <br />2002 TLI laboratory reports are also attached to this report. <br />As seen from Table 2 and Figure 4, BTEX and TEPH concentrations were not observed <br />above the laboratory detection limits of 0.5 micrograms per liter (µg/L) and 0.5 mg/L, <br />respectively, in the groundwater samples collected from wells MW-1 through MW-5 and <br />EW-1 on January 29, 2002. Concentrations of BTEX and TEPH observed in the <br />groundwater samples collected from wells MW-1 through MW-4 and EW-1 during January <br />2002 remained generally consistent with results from October 2001. <br />The Maximum Contaminant Levels (MCLs) for BTEX are also summarized in Table 2. As <br />seen from Table 2, the MCLs for BTEX are 5.0; 1,000; 680 and 10,000 µg/L, respectively. <br />Those standards are the statewide interim organic pollutant standards published in "The <br />Basic Standards for Ground Water" Regulation 41, (5 CCR 1002-41). It should be noted <br />that TEPH is not regulated by a numeric standard in Colorado at this time. As seen from <br />Table 2, BTEX concentrations observed in the groundwater samples collected from the site <br />during January 2002 did not exceed the CGS. <br />4. CONCLUSIONS AND RECOMMENDATIONS <br />The following conclusions are made based on information obtained during the quarterly <br />groundwater sampling activities. <br />1. Groundwater was observed at depths ranging from approximately 7.4 to 25.5 feet below <br />grade during the January 2002 sampling event. Free-phase product was not observed <br />during the January 2002 sampling episode. <br />2. The regional groundwater flow generally appeared to be in a northerly direction with a <br />more northwesterly component on the east side of the site on January 29, 2002 and the <br />hydraulic gradient was estimated to range from approximately 0.004 to 0.02 for the <br />overall site. The regional groundwater flow direction and hydraulic gradients estimated <br />for January 2002 are similar to previous observations. <br />3. The local groundwater flow direction appeared to be to the east in the vicinity of the spill <br />area with a southeasterly component east of the spill azea on January 29, 2002. The <br />hydraulic gradient was estimated to range from approximately 0.002 to 0.02 for the spill <br />azea. The local groundwater flow direction and hydraulic gradients estimated for January <br />
The URL can be used to link to this page
Your browser does not support the video tag.