2018-01-12_REVISION - M2000041 ‎(32)‎

• Permit No: M2000041
• IBM Index Class Name: Revision
• Doc Date: 1/12/2018
• Doc Name: Adequacy Review Response #2
• From: Fremont Paving and Redi-Mix
• To: DRMS
• Type & Sequence: TR4
• Email Name: ERR
• Email Name: WHE
• Media Type: D
• Archive: No

TABLE 1
Southwest Reservoir Slurry Wall Construction
Quality Control Program
Subject Standard Type of Test Minimum Frequency Specified Values
Trench Bottom Soundings — • Key trench depth soundings • Per 10 lineal feet • Greater of design depth or 4'key
Bottom Key Bedrock Samples — • Construction documentation e Per cut • Less weathered bedrock by observation
Backfill Profile Soundings — • Backfill profile soundings ' Beginning and • Consistent measurements with no indications of
end of each shift sloughing or caving
• Per water source
• pH pH between 6.0&8.0
Water — • Total Hardness or
as changes . Hardness less than or equal to 200 ppm
• Manufacturers certificate of
Additives — compliance with stated • One time • As approved by Engineer
Materials characteristics
Bentonite API Std 13A • Manufacturers certificate of 0 Each truck load • Premium grade sodium cation montomorillonite
compliance
• Selected soils obtained from • Per borrow source 0 >-50%
Supplemental a borrow area as approved or as changes passing
Fines — b the Engineer occur • Roll to 1/8"thread
• Unit Weight • Twice per shift • Unit weight z 1.03 gm/cc(64.27 pcf)
Prepared for • Viscosity • z 40 sec-Marsh 68eF
placement into API Std 136-1 Twice per shift @
the trench pH • Once per shift • Z 7&<10
Slurry Filtrate Loss • Once per week • Loss s 30 cc in 30 min.@ 100 psi
• Unit Weight • Twice per shift • 1.03-1.40 gm/cc(64.27—87.36 po
In Trench API Std 136-1 ' Viscosity • Twice per shift • z 40 sec-Marsh @ 68e
• Filtrate Loss • Twice per shift • Loss s 30 cc in 30 min.@ 100 psi
• Sand Content • Twice per shift • Sand content<—20%by volume
• Unit Weight • Twice per shift • Z Slurry in trench plus 15 pcf
• Slump • Twice per shift • 2e to 6"
• Gradation • Once per shift • 65 to 100%passing 3/8"
Backfill Mix At Trench ASTM C-143 • 40 to 85%passing#20
• > 30%passing#200
• Moisture Content • Once per shift • None
• Triaxial Permeability Test • One per 1,500 If • 51 x 10-7 cm/sec
NOTES:
1. Supplemental fines will be stockpiled in a windrow along the construction platform. The volume of supplemental fines stockpiles at each station shall be based on the design
amount required to provide backfill having>30%passing the No.200 sieve.
0.10212 Stonewall Springs10212.010 Southwest Reservoir Slurry Wall%TeOnical SpecsNaterlals Quality ContoLtal.doc