My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2009-03-02_REVISION - M2004009 (10)
DRMS
>
Day Forward
>
Revision
>
Minerals
>
M2004009
>
2009-03-02_REVISION - M2004009 (10)
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
6/16/2021 6:12:44 PM
Creation date
3/3/2009 1:52:20 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2004009
IBM Index Class Name
REVISION
Doc Date
3/2/2009
Doc Name
Subsurface Exploration Report- Feasibility Study Proposed Turnpike Water Storage Reservoir
From
EEC
To
DRMS
Type & Sequence
TR3
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.
/
79
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
S <br />A11 <br />EEC Project No. 1082030 <br />ASCI - Tumpike Reservoir <br />May 5, 2008 <br />Page 15 <br />Earth Engineering Consultants, Inc. <br />Care should be taken to provide a consistent, uniform low permeability cohesive material for <br />use as the earthen liner. In our experience, lean clay soils and siltstone/claystones bedrock <br />materials similar to the subsurface conditions encountered on-site have a high probability <br />that the material would be suitable for development for use as an earthen liner. In general, a <br />typical coefficient of permeability for lean clay soils would be on the order of 1 x 10-7 cm/s or <br />lower when compacted to at least 95% or greater of the material's standard Proctor <br />maximum dry density (ASTM D 698). <br />For any proposed intake and/or outlet pipes, or any other intrusions penetrating the cohesive <br />liner embankments, the pipes should be properly bedded and backfilled with approved, <br />relatively impervious cohesive soils. The intrusions/pipes should be surrounded by a <br />minimum of 2-feet of relatively impervious cohesive materials having a coefficient of <br />permeability of 1 x 10-7 cm/sec. or slower when properly compacted as described herein. The <br />backfill should be compacted to a minimum of 95% of the material's standard Proctor <br />density as determined by ASTM D698. Anti-seep collars should be placed around all inlet <br />and outlet pipes. <br />Based on our understanding of the proposed water storage reservoir design concept and our <br />experience with materials with similar properties, we expect the on-site overburden cohesive <br />soils and underlying bedrock material, (processed to at least 2-inch minus nominal particle <br />size), would be suitable for use as a low permeability earthen embankment material and <br />deepened core trench as intended. The materials permeability should continually be <br />evaluated during construction to verify compliance. Variations and characteristics of the <br />bedrock may exist across the pond. Seepage could occur through interbedded sandstone <br />seams. <br />GENERAL COMMENTS <br />The analysis and recommendations presented in this report are based upon the data obtained <br />from the soil borings performed at the indicated locations and from any other information <br />discussed in this report. This report does not reflect any variations, which may occur <br />between borings or across the site. The nature and extent of such variations may not become
The URL can be used to link to this page
Your browser does not support the video tag.