Circle Oaks County Water District*

Recommendations 7

• R1
  Accept DHS formula for domestic storage as the District's minimum service requirement for domestic storage.
• R2
  Domestic Water Storage: The highest monthly water utilization was in July 1998. During this month 3,000,000 gallons of water was pumped. This is equivalent to 100,000 gallon per day. This high demand month has not been repeated since the 500% increase in water billing. The high demand since 1999 has been around 2,700,000 gallons per month. This equivalent to 90,000 gallons per day or for a 30-day month the treated water production can exceed demand by 300,000 gallons a month. From this the following may be extrapolated: PEAK MONTH DEMAND 2,700,000 GALLONS 90,000 AVERAGE DAY DEMAND 474gpdc (gallons per day/connection) DHS calculations for domestic water storage are follows: Domestic water storage is calculated by adding average day demand to 25% of the peak day demand for each residential connection. The DHS calculations for COCWD are based on water data between 1997 and 2001. CIRCLE OAKS WATER DISTRICT MORATORIUM ANALYSIS JANUARY 13, 2005 Average Day Demand 355gpdc (gallons per day/connection) Peak Day Demand 848gpdc DHS Domestic Storage Requirement per connection for Circle Oaks: 567gpdc 2004 189 Connections require 107,000 gallons of storage DOMESTIC STORAGE PER PRESSURE ZONE Pressure Zone Number of Connection Domestic Storage (DHS) Zone1 108 Connections 61,236 (61,000) Gallons Zone 2 81 Connections 45,927 (46,000) Gallons 107,000 Gallons Both pressure zones meet DHS standards for domestic storage.
• R3
  Emergency Water Storage (Structural and Wild Fire Protection) and Fire Flow Requirements. DHS Fire Protection: DHS fire protection standard is based on flow rate and storage capability to maintain the rate of flow. Because the storage capacity is set by flow standards, storage capacity standards can be augmented or off set by pumping. DHS Flow Rate Standard 750 gallons per minute for 2 hours = 90,000 gallons This standard is for the entire subdivision and is not dependent on the number of residents in Circle Oaks or the pressure zone. The 90,000-gallon standard addresses the required water to control a resident or structural fire. Zone Connections Fire Storage Domestic Total Storage Storage Zone 1 108 90,000 Gallons 61,000 Gallons 151,000 Gallons Zone 2 81 90,000 Gallons 46,000 Gallons 136,000 Gallons 197,000 Gallons * *Note Total Storage for District includes 90,000 gallons fire storage for entire subdivision. According to DHS Standards Zone 2 is 86,000 gallons deficient. The DHS has stated that in Title 22 Section 64562(a) allows 720gpm water flow to augment the storage in Zone 2. CIRCLE OAKS WATER DISTRICT MORATORIUM ANALYSIS JANUARY 13, 2005 Urban-Wildfire Protection: In 2000 the Napa County Fire Marshal recommended 1,500 gallons of storage per connection. This recommendation was based on Nevada County information. In July 21, 2004 the current Napa County Fire Marshal stated the current Napa County Fire Code for subdivisions with more than 141 parcel is 120,000 gallons of fire storage while the PUC requirement for Circle Oaks is 90,000 gallon. The PUC has determined in a rulemaking proceeding that the local fire flow standards shall be required whether greater or lesser than those set forth in PUC General Order 103. The referenced requirement of the Napa County Ordinance for subdivisions with more than 141 parcels applies to new development approval, so it is questionable whether this requirement would take precedence over the PUC General Order. However, the Fire Marshall's reference to a specific amount of fire storage for a subdivision the size the District could be viewed as a "local fire flow standard" within the context of PUC ruling. For wildfire protection the Napa County Fire Marshal stated that 300,000 gallons of storage for the entire subdivision of Circle Oaks is desirable, but that unless the Napa County Ordinace were to change, 120,000 gallons is all that could be required. The 300,000 gallon storage amount covered both residential and wildfire protection. It was based on the strike force response that Circle Oaks can expect from Napa County. In order to conform to the statements of the Fire Marshall, I recommend using the 120,000-gallon standard as the minimum service requirement of the District Because the 300,000-gallon storage amount is based on a Napa County response to wildfires, the District should set this standard as a goal. In addition the District needs to set a minimum service standard of 1000gpm for emergency transfer capability between pressure zones and the 100,000 clear-well holding tank to conform to the statements of the current Fire Marshall. This standard could allow all tanks (including the 100,000- gallon clear-well) to be classified as fire storage. In addition, the emergency pumping standard must be maintained independently of outside power providers. When all emergency pumping standards are met, our total domestic/fire storage will be the following: 200,000 gallons Lower Zone 50,000 gallons Upper Zone 100,000 gallons Clear-Well Total 350,000 gallons CIRCLE OAKS WATER DISTRICT MORATORIUM ANALYSIS JANUARY 13, 2005 Storage Requirements: Connections Domestic Storage Min. Fire Storage Fire Storage Goal Total Storage Min./Goal 189 107,000 gallons 120,000 gallons 300,000 gallons 227,000 /407,000 gallons 240* 136,000 gallons 120,000 gallons 300,000 gallons 256.000/436,000 gallons *Triad Homes year 2020 population projection is 240 connections ** 567gpc standard IN ORDER TO LIFT MORATORIUM THE DISTRICT MUST DO THE FOLLOWING:
• R4
  Accept the County's current 1000gpm for two hours as the District's minimum service requirement.
• R5
  Lift the Moratorium for Zone 1 (200,000-gallon tank) if the treatment plant capacity issues can be addressed to the satisfaction of the DHS, as stated in writing by the DHS.
• R6
  Engineer with a local pumping company and install an emergency pump between Zone 1 and Zone 2 that operates independently from outside energy providers. Lift the Moratorium on Zone 2. GOALS RELATED TO MORATORIUM:
• R7
  Lift the Moratorium, GOALS RELATED TO MORATORIUM: