2013 Water System Plan, Volume II - Seattle City Clerk's Office - City ...

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Landsburg Chlorination System Goal Fluoridation System Target Residual Lake Youngs Plant Type: Capacity: Table 2 Cedar Water Treatment Facility Design Parameters Chorine Gas Minimze entry of nuisance and invasive species at Lake Youngs Hydrofluosilicic Acid 0.8 mg/L Raw Water Ozonation and Ultra Violet Disinfection 180 mgd Intake and Raw Water Pump Station Pump type Submersible Number of units: 7 Size 2 @ 20 mgd, 5 @ 40 mgd Ozone Generation Type: LOX Feed Number of units: 2 Design concentration of ozone 6 - 12 % Capacity: 825 lbs/day @ 12 % each (nomimal) 1250 lbs/day @ 6 % each (peak) Applied ozone dose 0.3 - 0.6 mg/L (typical) 0.8 mg/L (peak) Ozone Contacting Type: Fine bubble diffusion Flow direction Counter-current Contactor type Pipeline Number of units: Two parallel trains Volume 0.61 MG Contact time: 9.8 min @ peak capacity Ultra Violet Disinfection Design basis 3-log Cryptosporidium Method Medium pressure Dosage 40 mJ/sq cm Contactor type Closed vessel Number 13 total Capacity: 18.4 MGD each Clearwell Type: Pre-stressed Concrete Number of units: 2 Total volume: 20 MG Treatment Chemicals Gaseous chlorine: Disinfectant residual Lime: pH and alkalinity adjustment Sodium Bisulfate Excess ozone quenching Source: Design Criteria (Updated July 12, 2004), CH2MHILL; SPU updated in 2006 and 2011 Notes: lbs/day = pounds per day mgd = million gallons per day min = minutes mg/L = milligrams per liter LOX = Liquid Oxygen MG = million gallons mJ/sq cm = millijoules per square centimeter 1 of 1
Table 3 Seattle Well Fields Treatment Facilities Disinfection System Sodium Hypochlorite Target Dosage 1.0 to 1.4 mg/L Fluoridation System Hydrofluosilicic Acid Target Dosage 0.8 mg/L fluoride* Corrosion Control System NaOH Addition Target pH 8.2 * Historically, fluoride dose has been 1.0 mg/L. Reduction made in early 2011. Source: Updated by SPU in October 2011 1 of 1
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2013 Water System Plan Our Water. O
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Seattle Public Utilities 2013 Water
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SPU 2013 Water System Plan 2013 Wat
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SEATTLE PUBLIC UTILITIES 2013 WATER
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2013 Water System Plan Official Yie
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WATER DEMAND FORECAST MODEL STRUCTU
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Household size is calculated for si
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Annual Growth in Average Water Rate
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forecast by subtracting the project
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Page 25 and 26: Forecast Uncertainty What is most c
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Page 35 and 36: Permit Certificate or Claim # Prior
Page 37 and 38: Permit Certificate or Claim # Name
Page 41 and 42: Groundwater Elevations at Seattle W
Page 45 and 46: Forquestions,callKristinaWestbrook,
Page 47 and 48: WaterReclamationEvaluationChecklist
Page 53 and 54: 9. 24 HOUR PRIMARY CONTACT INFORMAT
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Page 67 and 68: Water Treatment Chemicals February
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Page 81 and 82: Table 11 Metered Connections by Cla
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Chapter 5 Water Infrastructure 5.6.
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Chapter 5 Water Infrastructure prop
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Chapter 5 Water Infrastructure are
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Chapter 5 Water Infrastructure outs
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Chapter 5 Water Infrastructure most
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Chapter 5 Water Infrastructure Groo
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Chapter 5 Water Infrastructure Valv
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Chapter 5 Water Infrastructure leve
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Chapter 5 Water Infrastructure 2. A
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Chapter 5 Water Infrastructure Tabl
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Chapter 5 Water Infrastructure Ever
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Chapter 5 Water Infrastructure A. C
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Chapter 5 Water Infrastructure Mult
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Chapter 5 Water Infrastructure Fast
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Chapter 5 Water Infrastructure 3. T
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Chapter 5 Water Infrastructure Hatc
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Chapter 5 Water Infrastructure Thru
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Chapter 5 Water Infrastructure 5.10
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Chapter 5 Water Infrastructure Foll
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Chapter 5 Water Infrastructure Cont
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Chapter 18 Plan Review Contents Cha
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18.2 GENERAL INFORMATION This secti
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Figure 18-1 Development Permit Boun
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18.3.1.5 Street Use Permit SDOT iss
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3. The Conditional Reviewer enters
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Table 18-2 Information Included in
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5 working days. If an SPU plan revi
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esponsibility in verifying and prot
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RPS sends letter to property owner
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Table 18-4 Plan Review Roles and Re
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Stormwater Code(2009) SMC Chapter 2
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each pay period, SPU Finance sends
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Director’s Rule Title Standard, C
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Other New Service Installation Stan
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Exception: To renew and increase ½
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• Adjust buried, obstructed or lo
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3.16 HYDRANT RESET Set hydrant back
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4. DEVELOPER PROJECTS Note: Charges
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5. PROPERTY SERVICES SPU must charg
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elow- or above-ground structure mea
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6. LABORATORY ANALYSIS All laborato
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SEATTLE PUBLIC UTILITIES 2012-2014
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Effective January 1, 2014 (a) (b) (
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Policy and Procedure Title Water Av
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1) Location of the property, includ
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J. The easement for an SPU-owned ma
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Seattle Public Utilities System Sto
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actual experience with the 1987 Tol
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pipelines to lower pressure zones t
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Pressure Zone West Seattle 498 West
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Seattle Public Utilities - 2013 Wat
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DELRIDGE WY SW Haller Lake INTERSTA
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Seattle Public Utilities 2013 Water
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Water System Planning Handbook Chap
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Water System Planning Handbook Chap
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