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SAMDAILY.US - ISSUE OF MARCH 28, 2020 SAM #6694
SOURCES SOUGHT

Z -- Weston Dam Repair

Notice Date
3/26/2020 3:04:53 AM
 
Notice Type
Sources Sought
 
NAICS
237990 — Other Heavy and Civil Engineering Construction
 
Contracting Office
US ARMY ENGINEER DISTRICT CHARLESTO CHARLESTON SC 29403-5107 USA
 
ZIP Code
29403-5107
 
Solicitation Number
W912HP20R2001
 
Response Due
4/10/2020 1:00:00 PM
 
Archive Date
04/25/2020
 
Point of Contact
Holly Sopiak, Phone: 8432789401
 
E-Mail Address
holly.j.sopiak@usace.army.mil
(holly.j.sopiak@usace.army.mil)
 
Description
Repair Weston Dam consisting seepage mitigation repair and emergency spillway repair.� The repair for seepage mitigation consists of construction a toe berm to collect through-seepage and control the migration of soil particles occurring in boils.� The components of the toe berm repair include a horizontal drainage blanket, a trench drain, toe drain collection system, and extension of the existing 36� reinforce concrete outfall pipe.� The horizontal drainage blanket will placed along the existing downstream face of the dam and extending approximately 150 feet downstream of the toe.� This horizontal drainage blanket will collect embankment through-seepage and any foundation under-seepage and provide for a filter exit that prevents movement and migration of soil particles.� The trench drain will be excavated near the toe of the new horizontal blanket and will relieve hydrostatic pressures in the foundation, reducing likelihood of boils forming.� A toe drain collection system consisting of perforated pipes, manholes, and pipe outfalls will collect the seepage and direct it away from the dam.� The existing 36� reinforced concrete outfall pipe needs to be extended due to the required length of the toe berm.� The repair for the emergency spillway to reduce the risk consists of armoring the emergency spillway to reduce the potential of erosion, this reducing the risk associated with failure.� The components of the emergency spillway repair consists of high-performance turf reinforcement mat (HP-TRM), riprap, and a diversion berm.� The HP-TRM will be placed along the graded emergency spillway to armor it.� Sod will be placed on top of the HP-TRM as the vegetation cover.� Riprap will be placed were the HP-TRM is terminated at the downstream end of the emergency spillway to reduce the potential for erosion and head-cutting to progress upslope.� A diversion berm will be constructed along the left side (looking downstream) of the emergency spillway to direct the flow of water toward Cedar Creek.�
 
Web Link
SAM.gov Permalink
(https://beta.sam.gov/opp/7721952f71db4fe0a267bde0882d563f/view)
 
Place of Performance
Address: Columbia, SC 29217, USA
Zip Code: 29217
Country: USA
 
Record
SN05602051-F 20200328/200326230151 (samdaily.us)
 
Source
SAM.gov Link to This Notice
(may not be valid after Archive Date)

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