 BLACK ROCK DAM MODIFICATION
VALUE ENGINEERING STUDY
COST MODEL
COMPONENT/PERCENT PROJECT COST
PROJECT COST PROPORTION
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Remaining Name
Chart Area
I. SPILLWAY MODIFICATION
(33.2%)
**
A. CONCRETE
(32.1%)
**
B. EXCAVATION
(0.6%)
**
C. BACKFILL
(0.6%)
**
II. SEEPAGE CONTROL
(28.2%)
**
A. GEOMEMBRANE
(13.7%)
**
B. SITE PREPARATION
(7.5%)
**
1. GEOTEXTILE COVER
(5.9%)
**
2. EXCAVATION
(1.3%)
**
a. RIPRAP & BEDDING
(0.9%)
**
b. ABUTMENTS
(0.4%)
**
3. FILL AND ROLL
(0.1%)
**
4. CLEAR AND GRUB
(0.1%)
**
C. MEMBRANE SOIL COVERING
(5.9%)
**
E. DEWATERING
(1.2%)
**
III. OUTLET WORKS
(20.8%)
**
A. TOWER REPLACEMENT
(18.7%)
**
1. EXCAVATION
(9.2%)
**
2. BACKFILL
(6.5%)
**
3. CONCRETE
(2.2%)
**
4. TOWER REMOVAL
(0.7%)
**
B. TUNNEL LINER
(2.1%)
**
1. STEEL PIPE
(1.7%)
**
2. GROUT
(0.4%)
**
IV. RAISE DAM
(13.1%)
**
A. LEFT ABUTMENT
(6.5%)
**
1. EARTHFILL
(6.2%)
**
2. SITE PREPARATION
(0.3%)
**
B. DAM CREST
(6.1%)
**
1. CONCRETE FILL
(5.1%)
**
2. ROCK BLOCK
(0.9%)
**
C. RIGHT ABUTMENT
(0.5%)
**
1. EARTHFILL
(0.5%)
**
2. SITE PREPARATION
(0.0%)
**
V. MOBILIZATION
(4.7%)
**
**
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