Term
| East Bay MUD can treat water with the following steps |
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Definition
Aeration
Coagulation
Flocculation
Sedimentation
Filtration
Fluoridation
Ozone Disinfection |
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Term
| The City of Oakland’s Water is treated at one of the following treatment facilites? |
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Definition
Orinda
San Pablo
Upper San Leandro |
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Term
| Oakland's water network uses a ____? |
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Definition
Dual Flow System
Combination of Direct Pumping and by Gravity from a large reservoir
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Term
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Definition
*By far the largest and most important
*Serves all of the area below 100' contour line from Berkeely to 73rd Ave.
*It is supplied by Gravity, mainly through the 59th street Aqueduct. |
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Term
| The 3 terminal storage reservoirs? |
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Definition
-Briones
-San Pablo
-Upper San Leandro |
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Term
| Secondary terminal reservoirs? |
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Definition
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Term
| EBMUD can treat water with the following 7 steps? |
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Definition
Aeration
Coagulation
Flocculation
Sedimentation
Filtration
Fluoridation Ozone Disinfection |
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Term
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Definition
25 Pressure zones and 8 regulator zones
33 zones
4 are supported by gravity supplemented by storage
8 are supplied by regulator valve
21 are supplied by pumps with equalizing storage |
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Term
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Definition
59th Street Aqueduct - From Claremont tunnel along 59th street to genoa street
Seuoia Aqueduct- from claremont tunnel to 82nd avenue
Wildcat Aqueduct - Supplies webster rate control stations which supplies claremont reservoir
Large transmission mains throughout the city. |
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Term
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Definition
| Is 2nd in size and importance. It serves the area between 100'-225' elevation |
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Term
| Central Pressure Zone South |
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Definition
Its 3rd in Importance
It lies below the 100' contour line and extends from 73rd ave, eastward |
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Term
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Definition
| A zone valve is a closed valve separating adjoining zones |
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Term
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Definition
| Responsibility rests with an official of the water district. They must respond to 3rd alarms or greater fires and 2nd alarm fires in the hills. |
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Term
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Definition
A reducing valve placed in a main to reduce pressure.
Pressure reduction is necessary when the source of water is from a higher than normal elevation |
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Term
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Definition
| Is a plug or ball valve operated by remote control from the oakland control center. These valves control the quantity of water entering the pressure zones fed by the respective filter plants |
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Term
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Definition
Red = closed zone valve
Blue = indicates an open valve
White = Hydrant Gate Valve
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Term
| Types of Hydrants found in Oakland? |
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Definition
M64
Greenberg
United iron works
Corey (dry barrel) *only 3
wharf style
flush |
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Term
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Definition
White - EBMUD
Yellow - Millitary
Green - Airport (salt water system regional park)
Red/Green - Private EBMUD (suction hydrants) |
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Term
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Definition
Red 0-500 gpm
Orange 501-999 gpm
Green 1000-1499 gpm
Blue 1500 + gpm |
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Term
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Definition
| There are 14 locations in the Oakland Hills that allow OFD to pump from a lower zone to a deficient upper water zone. |
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Term
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Definition
| Hydraulic procedures for this operation are to pump 10 psi over the normal static pressure into the white hydrant, or until 10 psi shows on the suction gauge. (which ever one comes first) |
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Term
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Definition
| The loss of pressure due to friction between the water and the walls of the pipe and the friction between water molecules. |
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Term
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Definition
| The rate of speed of the water as it moves through the main |
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Term
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Definition
| All of the dead end hydrants are marked with arrows which point in the direction of the dead end main, with the last hydrant having a vertical line ahead of the arrow. |
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Term
| The 3 mokelumne aqueducts? |
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Definition
Walnut Creek
Lafayette
Orinda |
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Term
Hydrant Cap Colors
(Pressure) |
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Definition
Red 0-50 psi
White 51-119 psi
Green 120+ psi |
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Term
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Definition
| The first reservoirs for potable water after treatment at a filter plant |
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Term
| The City of Oakland’s Water is treated at one of the following treatment facilites? |
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Definition
Orinda
San Pablo
Upper San Leandro |
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Term
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Definition
| The first reservoirs for potable water after treatment at a filter plan. The Claremont Tunnel acts as a clear well for the Orinda filters. It is 3.5 miles long and 9ft. in diameter |
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Term
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Definition
| Insures reliablitiy of pressure and supply especially in elevated districts |
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Term
| Oakland’s water network uses a dual-flow system. The pressure in the mains is supplied by? |
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Definition
| A combination of direct pumping and by gravity from a large reservoir |
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Term
| Since the mid 1980’s EBMUD has made no distinction? |
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Definition
| Between reservoirs and tanks based on capacity |
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Term
| The supply from a reservoir is by? |
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Definition
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Term
Pumping Plants operate by computer determined by prearranged water level in the reservoirs called
The Set Point
1. when level reaches set point pumps kick in and fill the reservoir
2. the pumps shut off automatically
time clocks act as a back up if computer fails |
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Definition
The Set Point
1. when level reaches set point pumps kick in and fill the reservoir
2. the pumps shut off automatically
time clocks act as a back up if computer fails |
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Term
| Hydrant pressure may vary by? |
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Definition
| 5 to 10lbs depending on whether the feed is from the pump supplying the reservoir or by gravity |
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Term
| When the pumping plant is in operation? |
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Definition
| The pressure will be 5lbs to 10lbs highe |
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Term
| Large Transmission Mains Diameter? |
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Definition
| 36”, 30”, 24” throughout the city |
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Term
| Distribution pipeline diameter? |
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Definition
| 12”, 24” mains supplying different areas of the city |
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Term
| Individual blocks of consumers and hydrants are served by? |
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Definition
| A gridiron arrangement of smaller mains 4” to 10” in diameter |
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Term
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Definition
| On distribution piplelines |
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Term
Because of the range of elevations in the area EBMUD’s distribution of water is divided into 25 pressure zones and 8 reguator zones
The 33 zones in the city are served by the following manner? |
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Definition
4 are supplied by gravity supplemented by storage
8 are supplied by regulator valve alone
21 are supplied by pumps with equalizing storage |
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Term
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Definition
| 500’ in high value districts and 800’ in residential areas |
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Term
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Definition
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Term
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Definition
Red – Closed Zone Valves
Blue – Indicates an Open Valve
White – Hydrant Gate |
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Term
| Number of Hydrants in Oakland? |
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Definition
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Term
| Types of Hydrants in Oakland |
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Definition
M64
Greenberg
United Iron Works
Corey (Dry Barrel)
Wharf Style
Flush |
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Term
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Definition
| One 2 ½” Two 2 ½” One 2 ½” & One 4” Two 2 ½” & One 4” |
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Term
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Definition
White – EBMUD
Yellow – Military
Green – Airport
Red/Green Private EBMUD (suction hydrant) |
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Term
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Definition
Hydrant Pressure
Red = 0 – 50 psi
White = 51 – 119 psi
Green = 120+ psi |
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Term
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Definition
GPM of Hydrant
Red = 0 – 500 gpm
Orange = 501 – 999 gpm
Green = 1000+ gpm
Blue = 1500+ gpm |
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Term
| What are the totals for the Mokelumne Aqueducts |
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Definition
202MGD Gravity
326MGD Pumping |
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Term
| What are the totals for the secondary terminal reservoirs (Chabot and Lafayette)? |
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Definition
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Term
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Definition
| Clear wells are the first reservoirs for potable water after treatment at a filter plant. The Claremont tunnel acts as a clear well for the Orinda filters. It is 3.5 miles long and 9' in diameter. |
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Term
| Oaklands water network uses? |
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Definition
A Dual Flow System
The pressure in the mains is supplied by a combination of direct pumping and by gravity from a large reservoir. |
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Term
| What are the time clocks for in the pumping plants? |
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Definition
| There are time clocks that act as a back-up in case of computer failure. |
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Term
| When the pumping plant is in operation the hydrant pressure may vary? |
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Definition
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Term
| The same main which supplied the reservoir by pump |
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Definition
| Also feeds the zone by gravity |
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Term
| The diameter of the distribution pipelines that supply the city? |
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Definition
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Term
| The gridiron arragement of smaller mains serving individual blocks of consumers and hydrants mostly consists of? |
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Definition
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Term
| Most hydrants are located on ? |
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Definition
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Term
| The pressure at the top of a zone versus the bottom? |
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Definition
40# at the top
130# at the bottom |
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Term
| Of the 33 zones in the city how many are supplied by gravity supplemented by storage? |
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Definition
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Term
| Of the 33 zones in the city how many are supplied by gravity supplemented by storage? |
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Definition
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Term
| Of the 33 zones in the city how many are supplied by regulator valves alone? |
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Definition
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Term
| According to the "Affect of Zone Pressure and Supply" section of the water course the cause of higher pressures at the bottom of a zone and lower pressures at the top of a zone is due to? |
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Definition
| 200' elevation difference |
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Term
| According to the "Affect of Zone Pressure and Supply" section of the water course the top of a zone is normally 100' below? |
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Definition
| The overflow level of the reservoir serving that zone |
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Term
| What is the distance between the top of a zone and the overflow level of the reservoir serving that zone? |
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Definition
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Term
| Do not confuse supply with pressure. A green top hydrant with a red cap means? |
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Definition
| Good supply but low pressure due to the location of the zone. |
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Term
| How do you locate a valves? |
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Definition
| EBMUD Hydrant Map at Battalion 2 or in each Chief's Car |
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Term
| What does a dotted line representing a zone line running directly through a valve mean? |
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Definition
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Term
| The responsibility for managing and operating valves during 3rd alarm or greater fires and 2nd alarm fires in the hills rests with? |
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Definition
| An Official of the Water District |
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Term
| Because the additional high pressure from an open zone valve could cause extensive damage? |
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Definition
| It is the responsibility of the EBMUD rep to open zone valves |
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Term
| What is the emergency phone number of the EBMUD Maintenance Shift Supervisor |
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Definition
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Term
| The placement of a zone valve on an otherwise seemingly continuous main creates? |
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Definition
| A functional dead-end main |
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Term
| True or False in some extreme cases zone valves can be opened and supply the adjacent zone? |
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Definition
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Term
| In order to limit potentially dangerous pressures when the source of water is from a higher-than-normal elevation? |
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Definition
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Term
| When pressure drops in the regulated area due to use? |
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Definition
| Regulators open adding more water to the area |
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Term
| Besides serving as a reducing valve a regulator? |
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Definition
| Has a compensating effect as a pressure equilizer |
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Term
| Besides serving as a reducing valve a regulator? |
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Definition
| Has a compensating effect as a pressure equalizer |
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Term
| Besides serving as a reducing valve a regulator? |
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Definition
| Has a compensating effect as a pressure equalizer |
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Term
| Besides serving as a reducing valve a regulator? |
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Definition
| Has a compensating effect as a pressure equalizer |
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Term
| When an engine connected to a hydrant is pumping into a ladder pipe and residual pressure in the water system drops to a predesignated amount a regulator will open and could result in a increase of how much on your incoming gauge? |
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Definition
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Term
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Definition
| A rate control valve is a plug or ball valve operated by remote control from the Oakland Control Center and control the quantity of water entering the pressure zones fed by the respective filter plants |
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Term
| According to the (typical) "Pressure Zone Service Elevation" diagram an elevation of 100' above sea level will produce a house service pressure of? |
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Definition
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Term
| According to the (typical) "Pressure Zone Service Elevation" diagram house service pressure at sea level is? |
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Definition
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Term
| All hydrants are gated and |
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Definition
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Term
| All hydrant gates are open |
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Definition
| and all hydrants are gated |
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Term
| What is the protocol when EBMUD shuts off a hydrant and places it "out-of-service"? |
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Definition
-the affected Fire Service Agencies are notified
-a 12" square yellow plywood marker is clamped under the 3" cap for visibility |
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