20060926 City of Westminster, Carroll County Maryland Drinking Water Supply Capacity Management Plan

20060926 City of Westminster, Carroll County Maryland Drinking Water Supply Capacity Management Plan

September 26, 2006

City of Westminster

Drinking Water Supply Capacity Management Plan

______

Objectives

MDE requirements for Water Supply Capacity Management Plan

Water System Reliable Capacity

Projected Water Demand

Historical Water Supply Investigations

Solutions to Drought of Record Water Deficit

Impact of 2002 Drought On MDE Policies

• As a result of the drought, MDE developed “Final Water Supply Capacity Management Plan (WSCMP) Guidance Manual” published in July 2006

GUIDANCE DOCUMENT WATER SUPPLY CAPACITY MANAGEMENT PLANS

• MDE requires municipalities to complete and submit a WSCMP if they meet one of several triggers:

• Recommends every community over 5,000 gpd prepare a WSCMP

• Water system operating at 80% or more of design capacity

• Request an expansion

• Request modification to Water Appropriation Permit

• Operating subject to a consent order with MDE or EPA

Components of WSCMP Components of WSCMP

A WSCMP requires the following information:

• Reliable capacity of the existing water system components

• Ground Water Supply (11 wells)

• Surface Water Supply (2 water intakes)

• Water treatment plants (2 plants)

• Water distribution system including fire control, etc.

• Existing and future water demand based on population projections and development

• Determination of the water supply excess or deficit

_____

City of Westminster’s Water System Existing System

• 115-MG Raw Water Reservoir

• Permitted Surface & Ground Water Supplies = 3.48 mgd

• Water Treatment Plant Capacity = 3.25 mgd

• Finished Water Storage – Total 6.9 mgd

Reliable Capacity under “Drought of Record”

• Ground Water = 1.18 mgd (historical records)

• Surface Water = 1.05 mgd (flow mass analysis)

• Total Reliable Capacity = 2.23 mgd

_____

Historical Water Supply Investigations

• Early 1980s: R.E. Wright performed extensive hydrogeological evaluations

• Initial investigations indicated 12 – 14 million gallons per day of ground water available

• 1985 - 2006:

• Drilled recommended sites with mixed success

• Existing Wells No. 3 – 11 based on recommendations; typically 4 test wells at each site prior to locating water source

• Well 11 in final design stages

• Windemere – no water source located

• Pools Meadow – no water source located

• 1985 – 1987: Investigated Hydes Quarry

• 2002: Medford Quarry Emergency Water Source, Connected Wakefield to main system

• 2003: Hoff Nagana Test Wells (developer’s expense, no water available), Proposed reuse water for golf course irrigation (owner not interested)

• 2004:

• Cranberry WTP Upgrade to improve reliable treatment of poorer water quality

• Evaluation of Raw Water Reservoir Expansion by raising water level

• Evaluation of Raw Water Reservoir through purchase of land

• 2005: Evaluation of Little Pipe Creek

_____

Water Supply Alternatives

On-Going Solutions

• Medford Quarry (0.5 mgd)

• Design change to pump to existing Cranberry Reservoir

• Reliable capacity = 0.5 mgd

• Anticipated start of construction July 2007

• Expansion of 115 Million Gallon Raw Water Reservoir

• Final negotiations under way

• Currently under evaluation

• Anticipated reliable capacity = 0.4 mgd

• Koontz Creamery

• Currently requesting proposals

• Anticipated reliable capacity = 0.3 mgd

Water Supply Alternatives - Additional Solutions

• Little Pipe Creek

• Currently in permitting phase

• Roops Mills Well Connection

• Currently at 85% of design

• Working through easements

• Anticipated start of construction Spring 2007

• Water Conservation Plan

• Educational programs under development

• Developing public awareness programs

• Water saving incentive programs under development

• Big Pipe Creek

• Submitted water appropriation permit

• Evaluation is underway

####