1. SUMMARY:
Artificial river has been designed to use
5cfs from the San Diego River to create a
varying depth and width channel that will
simulate a small stream. The artificial river
will serve as a local attraction and will
provide the City of San Diego a venue
from which to highlight the importance of
local water sources.
Calculations:
• Q=(1.49/n)AR2/3S0
1/2
Assumptions:
• Base: 10 feet
• Length: 2600 feet
• Change in Elevation: 2.6 feet
• Side Slope: 1
• Roughness Coefficient: 0.05
DESIGN:
The artificial river could have a depth of 8
inches to a foot with a base of 10feet.
Pump System:
The river will be pumped with 31hp
pumps:
COST:
Pump Cost: 6 x $2500 per pump =
$15,000
Electricity: 3 x 560 kWhr at $.08/kw-hr =
$134/day
Total cost: $50,000/year
SUMMARY:
Microfiltration will be used to
remove dissolved solids and
particles that cause turbidity in
water. This unit will be able to treat
2.6mgd of nonpotable water before
storage. (1.4mgd – Dewatering &
1.2mgd - Storm-water).
SPECS:
Membrane pore size: 0.1um - 5.0um.
Pressure: 30 psi to pushed the water
through the membrane.
USES:
• Irrigation
• Dual Plumbed Building
-Toilets
- Laundry
• CoolingTowers
• Augment Proposed Artificial River
COST:
Total: $3,630,000
SUMMARY:
WRE intends to provide the
Qualcomm site with an abundant
supply of non-potable water found
from excavating for construction
foundation. WRE has implemented a
permanent dewatering system that
will provide about 1.5 MGD of water
from two subgrade structures: a 40
MG water storage tank and parking
structure.
ASSUMPTIONS:
• Yields 1000gpm (1.4mgd)
groundwater
•Water Meets RWQCB Objectives
•Kinder Morgan Petroleum Facility
-Largely Complete
SUMMARY:
One of the water supply component
is storm-water captured from Serra
Mesa watershed.
An additional element of water
harvesting will be to capture and use
the storm-water runoff, specifically
from the Serra Mesa Canyon that
discharges in the northwest corner of
the site. Dry weather flows were
assumed to be 1.9cfs (1.2mgd).
Spatial analysis of the Mission Valley
Watershed was used to verify that
figure.
Project Objective:
Create a conceptual plan for water supply and water quality for the Qualcomm
Stadium Redevelopment. The conceptual plan will incorporate creative approaches to
offset the use of potable water that includes storm-water harvesting, groundwater,
and a creative approach that makes use of the San Diego River water.
Qualcomm Stadium Development Water Re-use Project
Dewatering System
Storage
MissionBay
San DiegoRiver
QualcommStadium
Serra MesaWatershed
Qualcomm
Stadium
I-15
San DiegoRiver
Serra MesaWatershed
I-8
Stormwater
Artificial River
Acknowledgement
Microfiltration
SUMMARY:
The tank is designed in accordance with
California Building Code 2013, AWWA D110, ACI
350, ACI 350.3 and incorporates state of the art
features such as close tolerance electro-servo
controlled wrapping, galvanized circumferential
prestressing, automated shotcrete, vertical post-
tensioning and utilizes flexible connections at the
wall base and wall top to improve seismic
performance.
CAPACITY:
40 Million gallons
450 ft. diameter and 40ft depth
Well Design
Structure Perimeter = 600 feet
Well Spacing = 50 feet
Number of Wells = 600/50 = 12 Wells
Cost of construction per
well = $20,000
Total Cost = $20,000 x 12 = $240,000
Pump Design
Pump Require = 12 pumps
Cost of each pump = $6,500
Total Cost of Pump = $6,500 x 12 = $78,000
Component Total Cost = $240,000 + $78,000 $318,000
Precipitation Data for San Diego
Water Year
(Oct. - Sep.)
Actual
Rainfall (in.)
Normal
Rainfall (in.)
2010 10.6 10.77
2011 12.7 10.34
2012 7.9 10.34
2013 6.55 10.34
2014 5.09 10.34
COST:
The estimate includes all work associated
with the construction and design of the
floor, wall footing, core wall, round
columns, two way, flat slab roof
(designed for 100 psf live load),
circumferential and vertical pre-
stressing, automated shotcrete and
standard appurtenances attached to the
tank (i.e. vent, hatch and exterior and
interior ladders.
$17,000,000.00
WRE would like to thank the following Professors and mentors: Alicia Kinoshita, Natalie Mladenov, John Prince, Tim Smith,
Tom Bloomer. Especially: James R. Haughey and Jim Rasmus from
.
Project Manager: Ismael Marquez
Civil : Rob Lane
Environmental: Jose Alcaraz
Environmental: Loren Miller
Environmental: Fed Pinongcos
Environmental: Heather Tegley
Team
The New Qualcomm stadium conceptual plan by the City of San Diego including an
Artificial River.
An Artificial River from Seoul Korea.
Conceptual Plan:
The final design that was created by Water
Resources Engineering (WRE) has four
primary components:
• An artificial river,
• A groundwater dewatering system,
• A storage reservoir for dry weather storm-
water flow
• A microfiltration unit that will treat the water
to non-potable standards to be used on any
future development plan.
If this conceptual plan is implemented, the
combination of storm-water flow and
dewatering system will generate 2.6MGD of
water that could be used to offset the
demand of potable water.
(Unit cost x flow)
= $9,000/MGD x 3 MGD =
= $27,000/*3 years = $9,000 per year
Membrane Filtration
equipment
(Estimated equipment cost x total
capacity)
= $.5/gpd x 3 MGD = $1,500,000
Energy cost to operate = (111356.233 m3/day x .05 kwh/m3) = 567.81 kwh/day
= (.1351/kwh x 567.81 kwh/day) = $77/day
= ($77/day x 365 days) = $28,105/year
Total annual Operation
and Maintenance cost $1,537,105
Capital Cost $3,630,000
Membrane replacement
*Filtration membranes should be replaced about every 3 years because the
membranes will not be put under too much stress.
Microfiltration: Operation and Maintenance Cost for 3 MGD flow
Project Cost:
Component Cost + Annual Operations and
Maintenance
=$23,231,500 + $286,365
=$23,517,865!
DS,
$1,285,760
, 6%
ST,
$17,000,000,
72%
AR,
$100,000,
0%
MS,
$5,167,105,
22%
Original
Groundwater Level
Made Ground
Proposed
Basement
ExcavationDewatering
Well Installed
Int. or Ext.
Temporary Reduced
Groundwater Level