Transcript Water Quality for New Subdivsions

MONTERY COUNTY
2005 GENERAL PLAN UPDATE
STUDY SESSION – DOMESTIC WATER
May 19, 2005
Feasibility and Application
Completeness Requirements

Source Water Quality Analysis

Meets all Title 22 water quality parameters.
Technical, Managerial, and Financial (TMF)
Feasibility and Capacity
 A Water Consolidation or “Can and Will
Serve” Letter
 Water Use and Nitrate Impact Questionnaire
 Source Capacity

Water Quality
Based on Level of Public Health Risk
(MCC 15.04.090, H&SC 116555, CCR Title 22)
 Acute
– High Public Health Risk
Immediate illness could result in death.
 Chronic – Moderate Public Health Risk
 Prolonged exposure shown to cause
illnesses which can lead to death.

 Aesthetic

– Low Public Health Risk
Unpleasant taste or odor, staining of
clothing and fixtures.
Water Quality
Acute Risk
Nitrates
 Most common contaminant in Monterey
County.
 45 mg/l (MCL) maximum contaminant level.
 Infants (“Blue Baby Syndrome”) , elderly,
people who are anemic are susceptible
Nitrates
Acute Risk

When the nitrate level in the water supply exceeds
the maximum contaminant level, then treatment is
not acceptable due to:
The risk of failure.
 Must have regular maintenance on the treating
device and is only effective to a certain level.
The treatment is expensive $10K -$20K for a
typical 4 connection system.
 The disposal of waste products is problematic
with Regional Water Quality Control Board.

Nitrate Monitoring Results
Nitrate Results
3/12/1990
8/22/1991
50
42
10/6/1992
7/14/1994
29
30
25
8/1/1995
17
20
7/5/1996
12
7
10
2
2
9
10/26/1998
3
4/26/2001
Date
3/2/05
5/14/02
4/26/01
10/26/98
7/5/96
8/1/95
7/14/94
10/6/92
8/22/91
0
3/12/90
Nitrate Results (mg/L)
40
5/14/2002
3/2/2005
Chronic Risk
Prolonged Exposure

Naturally occurring contaminants in groundwater
such as arsenic, and fluoride which exceed the
MCL.
 Subdivision is approvable. There is approved
treatment technology. $10K - $100K
 Disposal of brine is problematic (hazardous
material)
 All TMF requirements.

Non-naturally occurring contaminants such as
Cadmium and Chromium which exceed the MCL.
 Subdivision is not approvable. There is no
approved treatment technology.
Technical, Managerial, and Financial
(TMF) Requirements
(MCC15.040.040, MCC 19.03.015, H&SC 116540) (1 0f 2)
Source Water Assessment Program (SWAP)
Map of potential contaminating activities
 Type of ownership
 Contract for Certified Operator
 How professional services will be provided
 Budget projection
 Equipment replacement fund
 Capital improvement plan

TMF - Water Rights
(MCC 15.04.040 and 19.03.015l, H&SC 116555) (2 of 2)
Title Report (if necessary)
 Deed of trust for well
 Documentation of surface water rights
 Identification of any other water right issues

Water System Consolidation Letter &
Valid “Can and Will” Serve Letter
(MCC 15.04 and H&SC 116540)
Includes identification of existing systems
within one mile.
 Feasibility of incorporating into an existing
system.
 Feasibility of being owned, operated or
managed by a satellite agency.
 Documents the ability to serve with an
expiration date in place.

1 ACRE LOTS
WITH WELL AND SEPTIC
208 Ft
208 Ft
100 ft.
1 ACRE LOTS
WITH WELL AND SEPTIC
1
2
3
5
4
6
RECOMMENDATIONS
DOMESTIC WATER AND LAND
USE PERMITTING
PRIVATE WELLS FOR DOMESTIC USES
1.
All new wells for domestic uses must meet minimum quantity
requirement of 3 gpm after a maximum 72-hour pump test. In
hydrogeologic areas where data has been previously
developed, the pump test may be reduced.
2.
Bulk hauled water is not considered an approvable supply for
new construction.
3.
New development on existing lots of record must have a
determination of water quality via a one time biological and
chemical analysis of primary and secondary constituents. A
noticing process would be required so that future owners of
the lot would be informed of the water quality.
4.
Continue the requirement that lots served by a well and an
onsite wastewater treatment system must be a minimum of
2.5 acres.
WATER SYSTEMS
5.
Require consolidation of water systems for new
development with existing utilities in community areas
and rural centers. In all other planning areas, the
formation of new mutual water systems would be
discouraged by requiring the creation of satellite systems
owned and operated by existing entities (i.e., PUC
Utilities, Community Service Districts) where feasible
with the appropriate Technical, Managerial and
Financial, (TMF) feasibility assurances.
6.
To assure water quality and improved basin-wide
management of groundwater resources, water system
owners and purveyors shall retain all water rights for
new lots created through minor and standard
subdivisions.
LAND USE PERMITTING
(1 OF 3)
7
The County shall continue to require that new
development have a long term sustainable water supply.
This shall not be a factor in determining a project
complete, but will be a critical factor in determining
whether a project deemed complete can be
recommended for approval.
8.
Long Term Sustainable Supply should be determined on
a basin by basin basis:





Projects in Zone 2C shall be considered to haves a long term
sustainable supply
Projects in basins under the purview of the Pajaro Water Management
Agency shall be evaluated in terms of the implementation of that
agency’s CIP
Projects in the area managed by the Monterey Peninsula Water
Management District shall be governed by State Order 95
The Seaside Basin shall be considered not to have a long term supply
at this time
Long term supply in the Toro Basin (t.b.d.)
LAND USE PERMITTING
(2 OF 3)
9.
As part of the determination of long term supply for individual
projects, the County shall encourage the reduction of water usage on
a property in the permitting process. For the purpose of determining
baseline, documented water usage for 10 out of the past 20 years
shall be calculated. A minimum of 30% savings over baseline shall
be required.
10.
Water quality shall be a key additional determinant of long-term
sustainable supply.
11.
A will serve letter from an existing water purveyor verifying that
financial and infrastructure commitments have been completed will
also be required.
LAND USE PERMITTING
In Community Areas, regional impacts may be addressed via impact
fees tied to a CIP for new development.
12.
13.
(3 OF3)
Outside Community Areas:

Require connection to a water system or establishment of a
satellite to an existing water system that has the appropriate
TMF.

Regional impacts may be address via impact fees tied to a CIP
for new development. However, outside community areas the
CIP shall have Tier 2 priority.
WASTEWATER TREATMENT
AND DISPOSAL
(1 0f 2)
14.
Require new development to consolidate wastewater
collection, treatment and disposal systems of services to
existing systems where feasible. The county shall not
allow the use of package plants when connection to a
regional facility is feasible.
15. Prior to deeming an application for development
complete, proof of wastewater treatment infrastructure
feasibility must be approved. Proof of wastewater
treatment infrastructure would include an evaluation of
technical, managerial, and financial capability of the
responsible entity for operating the facility.
16. Wastewater treatment facilities must be built and
approved prior to the issuance of building permits.
WASTEWATER TREATMENT
AND DISPOSAL
(2 of 2)
17.
New wastewater treatment facilities shall meet tertiary or
advanced tertiary treatment standards in coordination with the
Central Coast Regional Water Quality Control Board.
18. All community wastewater systems will be operated by duly
constituted public or private entities including independent
Community Services District or Community Facilities
District, but excluding County Service Areas or County
Sanitation Districts.
19. Wet weather storage capacity of 120 days is required for
treated sewage.
20. A minimum lot size of one acre will be required for lots
served by a community water system and where sewage
disposal is by an onsite wastewater treatment system.
SOLID WASTE
19.
The county shall adopt a Landfill Buffer
Zone Ordinance