Well Head Treatment Project · Our Water System 60 % 40% Imported Groundwater (3000 A.F.) (4500...
Transcript of Well Head Treatment Project · Our Water System 60 % 40% Imported Groundwater (3000 A.F.) (4500...
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Well Head Treatment Project
Water Well 13
This PowerPoint was originally presented to City Council in 2003.
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Our Water System
60 %40%
GroundwaterImported
(3000 A.F.)(4500 A.F.)
Average Annual Total Water Consumption--7500 A.F.
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W
Gar
field
Ora
nge
Dow
ney
Lake
woo
d
Par
amou
nt
710
Free
way
I-105 Freeway
Rosecrans
Somerset
Alondra
Century
Well 14
Well 13
CB 52
CB 13
City of Paramount Water Production Sites
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CB 13 and 52
l CB 13-Located at the end of San Marcus Street.
l CB 52 at the north end of Orange Avenue
l Connection to MWD l Meets 30-40% of
production need
CB 13
CB 52
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Well 14
l Located:– Behind Alondra
Schooll Built in 1984l Produces approx.
1/3 of the City’s total water demand
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Well 13
l Located:– 15123 Vermont
Avenuel Built in 1978l Produces approx.
1/4 City production need.
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Water System Testingl Testing is state
regulated.l Test for various
minerals and chemical content.
l Each item has a “Maximum Contaminate Level” or MCL.
l Non-compliance may require water treatment or shut down of well site.
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Groundwater Surface WaterAverage Range Average Range
PrimaryMCL
MCLG or
PHG
Aresnic 10 5-15 ND ND-2.0 50 -Erosion of natual deposits, glass
Manganese 48 ND-100 ND ND 50 -Erosion of natual deposits
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Water Quality Compliance
l Manganese is naturally found in drinking water.
l Manganese has no adverse health affect.
l Manganese can cause discolored water and damage water mains.
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Cast Iron Main and Manganese
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Manganese Compliance /Well 13
l Manganese MCL:– 50 parts per billion
l Well 13 Manganese level:– Exceeding 50 parts per billion
l 1994-1997-Manganese level:– averaged 80 parts per billion
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Manganese Compliance/Well 13
l 1998-City issued Compliance Order by Department of Health Services (DHS) to reduce Manganese.
l City agrees to twice monthly monitoring.l August, 2002-City ends monitoring.
– Manganese level drops just below MCL.l January, 2003-Manganese levels begin to
rise again.
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Manganese Sample History-Well 13January to April, 2003
0
10
20
30
40
50
60
70
80
January February March April
Manganese
Max.ContaminantLevel (MCL)
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Arsenic
l Arsenic is a chemical constituent of water that appears naturally.
l High levels of Arsenic can cause health issues.
l Arsenic, like Manganese, has a “Maximum Contaminant Level”
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Arsenic Levels
l Current State MCL:– 50 parts per billion.
l New Federal MCL:– 10 parts per billion effective January, 2006.
l Proposed State MCL: – .004 ug/l (or 4 parts per trillion) by 2004.
l Well 13 Arsenic level-10 parts per billionl Will not meet proposed state regulation.
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Treatment OptionsTreatment Facility-City of Signal Hill
Filter TanksBackwash Tank
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Ground Water/Distribution SystemWater Quality Assessment
Operational Recommendations
• Well Operations• Corrosion Control• Rigorous System Flushing
Water TreatmentFacility
• Permitting • Design
Development • Construction
• Historical System Analysis
• Water Quality Assessment
Þ Ground Water
Þ Distribution System
• Corrositivity Analysis
• Treatment Options
Water Treatment Recommendations
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Cost and Financing Options
l Study and Treatment Cost: – approximately $1,000,000
l Financing Options:� WRD:No interest loan� State Drinking Water Revolving Fund:
Low interest loan� Water Fund
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Water Rates
l Considering 5% increase (effective January, 2004)
l Last Increase: January, 2002l 3rd lowest rate among 14
surrounding water agencies.l Average residential increase:
– $2.36 every two months
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“We’ll neverknow the worthof water till thewell go dry.”- Benjamin Franklin
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Well Head Treatment Project
Water Well 13