S000000371 Stryton Topo Survey.pdf
PDF 3 MB Posted
- Attached to
- Stryton Mine Remediation
- Solicitation number
- S000000371
- Issued by
- Van Buren County, Arkansas
About this file
This document is a Base Topographic and Volumetric Survey of the Stryton Pit located in Hartford, Sebastian County, Arkansas. The survey was conducted on behalf of the Arkansas Department of Energy and Environment (ADEE) and the Division of Environmental Quality (ADEQ) to assess the current conditions of the abandoned Stryton Mine site. The survey provides detailed topographic maps, water depth measurements, and volumetric calculations for the pit and adjacent stockpile. Key findings include a maximum pit depth of 74.15 feet, a water volume of 211,280 cubic yards, and a stockpile volume of 412,063 cubic yards.
The state of Arkansas is seeking bids for the remediation of the Stryton Mine site through a contract opportunity managed by the Department of Transformation and Shared Services Office of State Procurement (TSS OSP). The project consists of four stages - earthwork, topsoil, vegetation, and clean-up - to be completed within 270 days of contract award. Prospective contractors must attend a mandatory site visit, hold a current Arkansas contractor license, and have completed at least three similar projects in the past five years. The contract will be awarded to the responsive and responsible bidder with the lowest bid meeting the stated requirements and may be renewed for up to six additional one-year terms. The project will be funded by a forfeited bond to ADEQ, and if the lowest bid price exceeds the bond amount, some stages of the project may not be completed. Minority and women-owned businesses are encouraged to participate, but there are no set-aside designations or restrictions on the types of organizations that can respond.
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Other files
| File | Type | Posted |
|---|---|---|
| S000000371 Stryton Mine Remediation IFB- Revised.pdf | ||
| S000000371 Stryton Mine Remediation IFB.pdf | ||
| S000000371 Official Bid Price Sheet.xlsx | XLSX spreadsheet | |
| S000000371 Response Packet~1.docx | DOCX document | |
| S371 Q_A_Extract_Report- Answers.pdf | ||
| S000000371 Contract and Grant Disclosure.pdf | ||
| S000000371 Services Contract SRV-1 Sample.pdf |
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Text version
POND DEPTH
734.72 WSEL
NO.
DEPTH
0' - 10'
10' - 20'
20' - 30'
30' - 40'
40' - 50'
50' - 60'
60' - 70'
70' - 80'
COLOR
STOCK PILE
HEIGHT
NO.
ELEV.
0' - 10'
10' - 20'
20' - 30'
30' - 40'
40' - 50'
50' - 60'
60' - 70'
70' - 80'
COLOR
076577
0775780
745 750
0 685
5 700
0 715
5 730
760765770
72072573073574074575
Scale in Feet
100 100
Drawn By:
Approved By:
Date:
Project No.:
JMN
WWPII
12.15.21
AEE-01
1 of 1SHEET
Vert. Scale:
Horiz. Scale:
Plot Scale:
DWG Name:
NA
1"=100'
BASE
TOPOGRAPHIC AND
VOLUMETRIC SURVEY
of STRYTON PIT
W. HARMONY ROAD
HARTFORD, SEBASTIAN CO., AR
Prepared for:
Mark Strang
Energy & Environment Mining Division
D ra w in g N am e:
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Revisions
5704 EUPER LN, STE. 200 - FORT SMITH, AR 72903
479.452.1933 - HALFF.COM
Certification:
The Subject Plat And Survey Upon Which It Is Based Was Performed By Me Or Under My Direct Supervision And Was Executed In Accordance With The Current Minimum Standards As Set Forth For Property Boundary Surveys And Plats As Published By The Arkansas Geological Commission, Land Survey Division.
SURVEYOR NOTES:
1.Vertical Datum: NAVD88 (Geoid 18). Orthometric heights and contours are derived from Terrestrial and RT Kinematic GNSS Observations based on a Smartnet and OPUS processed solution having published coordinate values of N:252909.160, E:
615758.455 and an elevation of 663.765 feet.
2.Contour intervals are one-foot, as depicted hereon.
3.The last date of survey was 10/19/2021.
4.The Equipment that was used was a Trimble Sonarmite
Echosounder RTK unit and a Microdrones MD4 1000HR Lidar unit.
The aerial data was flown at 40 meters above ground level (AGL) with a 50% percent overlap and then cross hatched to ensure adequate ground coverage. The Sonar mite was attached to a flat bottom boat and was set to collect sonar data moving along the surface at a 10-foot interval to ensure there was adequate lake bed coverage.
5.This Bathymetric Survey is a product of integrating RTK GPS Sonar data with Aerial Lidar data to create a one-foot contour map. This survey was intended to be used for grading and volume calculation purposes.
6.The volume of water held in the strip pit at the time of survey was
±211,280 CY.
7.Max depth of the pit is 74.15'.
8.The volume of the adjacent stockpile is ±412,063 CY.
W . H
A
RM
O N
Y
RO
A D
LEGEND
734 Existing Grade Contours
Toe of Stock Pile
Water Surface Elevation 734.72
EOW
EOW
EOW
EOW
EOW
EOW
EOW
Existing Strip Pit
WSEL= 734.72
Existing Stock Pile
Existing Gravel
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HALFF
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ASSOCIATES INC.
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ARKANSAS
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STATE OF
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