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City of Newport Beach
Date: 7/6/2024
City of Newport Beach, Back Bay Bungalow LLC
Clear Sky Landscape Inc.
20462 Santa Ana Ave
Newport Beach, CA, 92660
Dear Miguel Boyzo,
Thank you for the opportunity to perform a landscape irrigation audit for Back Bay Bungalow. All of the zones on the
current phase of Back Bay Bungalow irrigation system were fully evaluated with a complete visual and hands on
inspection. As per your request we evaluated the current phase of the landscape and irrigation valves in accordance to
the California Water Efficient Landscape Ordinance (MWELO), City of Newport Beach, Irrigation Association
landscape audit and architectural plans. The audit consisted of the documentation of each zone with an emphasis that all
landscape plants are water conserving or drought tolerant with a low to mid crop coefficient. The Irrigation consisted of
the documentation with an emphasis that all irrigation is A) Installed per plan B) There is no visual run off ) Irrigation
types are not mixed D) The zone is fully functional.
Per plan: After evaluating each single hydro zone, all of the current layout, components and functionality meet the
requirements of the architectural irrigation design and IA (Irrigation Association) requirements. Each hydro zone was
noted on the evaluation form with notes and zone details.
MWELO: The Model Water Efficient Landscape Ordinance is adopted by many cities throughout California which is a
common standard for new construction installs and originally based from AB1881 water efficient landscape ordinance.
Chapter 2.7 Model Water Efficient Landscape Ordinance Section 192.12 Irrigation Audit, Irrigation Survey, and
Irrigation Water Use Analysis.
(a) All landscape irrigation audits shall be conducted by a local agency landscape irrigation auditor or a third party
certified landscape irrigation auditor. Landscape audits shall not be conducted by the person who designed the landscape
or installed the landscape.
(b) In large projects or projects with multiple landscape installations (i.e. production home developments) an auditing
rate of 1 in 7 lots or approximately 15% will satisfy this requirement.
(c) For new construction and rehabilitated landscape projects installed after December 1, 2015, as described in Section
490.1:
(1) the project applicant shall submit an irrigation audit report with the Certificate of Completion to the local agency that
may include, but is not limited to: inspection, system tune-up, system test with distribution uniformity, reporting
overspray or run offt hat causes overland flow, and preparation o fan irrigation schedule, including configuring irrigation
controllers with application rate, soil types ,plant factors, slope, exposure and any other factors necessary for accurate
programming;
(2) the local agency shall administer programs that may include, but not be limited to, irrigation water use analysis,
irrigation audits, and irrigation surveys for compliance with the Maximum Applied Water Allowance.
Uniformity: The catch can test on zone 1 was to determine the overall system uniformity. The uniformity came in at
88%% which is the average range and manufacture specification for Drip. Thepressure at the drip line was measured at
30 PSI. The manufacturer's specification is rated 30 to 40PSI. The Audit is conducted using catch cans in the middle of
zone 1 to determine the uniformity rate.
The irrigation system and landscape planting was fully evaluated on 3/6/2024. Based on the irrigation
association audit rules/guidelines, City of Newport Beach, MWELO and Architectural design, the
irrigation system is in full compliance.
The root depth of the plants on site ranged from 6 to 24 inches, and the distribution uniformity ranged
from 85% to 95% percent .All recommended adjustments were corrected on site to reach maximum
efficiency.
The type of plants meet the required crop coefficient from the design and state requirements.
The pressure at your drip line ranges between 30 and 40 psi. The designed pressure for the Drip is within
compliance from the irrigation architectural design.
Finally, my recommendation is to implement a responsible watering schedule that follows local
restrictions and use an annual water budget based on local ET (Evapotranspiration). Regular landscape
maintenance on a weekly or bi-weekly is also recommended. A quarterly irrigation inspection by a
certified irrigation technician will keep the irrigation at peak performance throughout the year.
Eduardo Segura
Landscape Architect
edwardsegura21@gmail.com