Overview of the Environmental Overview of the Environmental Impact - - PowerPoint PPT Presentation

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Overview of the Environmental Overview of the Environmental Impact - - PowerPoint PPT Presentation

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Overview of the Environmental Overview of the Environmental Impact Report for IRWDs Biosolids & Energy Recovery Project June 27, 2012 1 Presentation Overview Approach to environmental review Project objectives Project

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SLIDE 1

Overview of the Environmental Overview of the Environmental Impact Report for IRWD’s Biosolids & Energy Recovery Project

June 27, 2012

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SLIDE 2

Presentation Overview

  • Approach to environmental review
  • Project objectives
  • Project description and location
  • Key environmental concerns

Key environmental concerns

  • Demonstration of off-site views
  • Project features to address concerns
  • Summary of impacts and mitigation measures

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  • Schedule
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SLIDE 3

Approach to Environmental Review of Project

  • Project modifies the Michelson Water Recycling Plant

(MWRP) Phase 2 and 3 Capacity Expansion Project

  • Phase 2 – expansion from existing 18 mgd to 28 mgd
  • Phase 3 – expansion 33 mgd

p g

  • Final EIR certified by IRWD in February 2006
  • Biosolids Handling & Energy Recovery Facilities

to be added

  • Notice of Preparation circulated on March 28, 2011
  • Mailed to 53 interested parties
  • 30-day scoping period
  • 30-day scoping period
  • Public scoping meeting held on April 12, 2011
  • Comments received from 9 organizations

D ft S l t l E i t l I t R t

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  • Draft Supplemental Environmental Impact Report

(Draft SEIR) has been prepared.

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SLIDE 4

Comments on Notice of Preparation

Organizations that submitted comments:

  • South Coast Air Quality Management District

South Coast Air Quality Management District

  • University Synagogue
  • Airport Land Use Commission

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  • Orange County Public Works
  • City of Irvine
  • LBA Realty
  • Orange County Fire Authority
  • Orange County Sanitation District
  • University of California Natural Reserve System

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SLIDE 5

Project Objectives

  • Allow IRWD to make efficient and sustainable use of its

Allow IRWD to make efficient and sustainable use of its renewable resources

  • Increase IRWD’s autonomy for residual management
  • Allow for beneficial use of biosolids and biogas
  • Minimize environmental impacts associated with residuals

management management

  • Provide residuals management facilities to meet future solids

handling needs of the MWRP Phase 2 and 3 Capacity Expansion Project Expansion Project

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SLIDE 6

Project Description

  • IRWD to construct facilities at MWRP

for:

  • Biosolids processing
  • Biogas management & energy

g g gy recovery

  • IRWD would no longer export solids to

Orange County Sanitation District (OCSD)

  • Project would treat digested and

dewatered sludge from IRWD’s Los Alisos Water Recycling Plant (LAWRP)

MWRP LAWRP

Alisos Water Recycling Plant (LAWRP)

  • Delivered by truck
  • Project to be constructed on disturbed

vacant land

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vacant land

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SLIDE 7

Biosolids Project Area

Biosolids Project Area

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SLIDE 8

Project Components

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SLIDE 9

Environmental Impacts Analyzed

  • Key environmental concerns underlined:
  • Aesthetics
  • Air Quality (incl. Odor)
  • Biological Resources
  • Cultural Resources
  • Geology, Soils & Seismicity
  • GHG Emissions
  • Hazards & Hazardous Materials
  • Hydrology & Water Quality
  • Land Use, Planning & Recreation
  • Noise
  • Utilities & Energy
  • Transportation & Traffic
  • Hazardous risks associated with:
  • Production and transport of Class A and B biosolids
  • Production, storage and use of biogas

, g g

  • Adverse effects on the San Joaquin Marsh
  • NOP Comments focused on aesthetics, biosolids products,
  • dors and hazardous risks of biogas handling

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  • dors and hazardous risks of biogas handling
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SLIDE 10

Visual Simulation – Looking East

SEIR includes visual simulations from 11 vantage points (Figures 3.1-4 to 15)

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SLIDE 11

Visual Simulation – Looking West

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SLIDE 12

Animation of Offsite Views of Project

Go to .WMV File outside of this presentation

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SLIDE 13

Products of the Biosolids Project

  • Regulated by the Clean Water Act, 40 Code of Federal Regulations

g y , g Part 503, Standards for the Use or Disposal of Sewage Sludge

  • Biosolids products can be used for fertilizer (for landscaping or

crops), cement kiln biofuel, or disposed of in a surface landfill p ), , p (considered non-hazardous).

  • Project will produce both:

Cl A Bi lid “P ll t ” P th d d b l

  • Class A Biosolids “Pellets” – Pathogens are reduced below

current detectable levels. Can be used by the general public.

  • Class B Biosolids “Cake” – Pathogens and vectors are reduced

t l l th t lik l t th t t bli h lth d to levels that are unlikely to pose a threat to public health and the environment. Cannot be used by the general public.

  • Biogas (product of biosolids stabilization) will be used to produce

it f t MWRP

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power on-site for use at MWRP.

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SLIDE 14

Odor Control Features

  • Project will incorporate a state-of-the-art odor control system
  • Highly reliable
  • Built-in redundancy
  • Back-up power generators
  • Collects foul air from all sources including the truck load out/receiving bays
  • Collects foul air from all sources including the truck load-out/receiving bays
  • Three stage odor scrubber system
  • Allows for taking units out of service for maintenance without

interrupting odor control service

  • IRWD to prepare and implement an Odor Control Maintenance and

Monitoring Plan

  • Defines schedule for regular preventative maintenance of all equipment
  • Modeled after a similar plant operated by the City of Mesa in Arizona
  • Proven record of zero odors detected at the treatment plant boundary

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SLIDE 15

Biogas Management System

  • Biogas from the Project is a renewable energy source
  • Multiple uses for methane contained in the biogas
  • Generate electricity using microturbines
  • Heat generated would be recovered for use in the digestion process
  • Combusted to generate heat in the boiler or dryer

Co busted to ge e ate eat t e bo e o d ye

  • Biogas management components
  • Low-pressure biogas holding tank
  • Biogas Conditioning System
  • Microturbines
  • Microturbines
  • Clean Enclosed Burner
  • All facilities designed in conformance with National Fire Protection

Association Code 820

  • Standard for fire protection for wastewater treatment and collection systems
  • Incorporates monitoring devices and pressure relief systems
  • IRWD would develop and implement a Biogas Handling System

Maintenance and Monitoring Plan 15 g

  • Defines schedule for regular preventative maintenance of all equipment
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SLIDE 16

Summary of Impacts and Mitigations

Impact Category Significance Level Mitigation Measure Summary

Aesthetics Less than significant with mitigation

  • Select paint color schemes that blend with the

existing environment existing environment

  • Shielding of temporary construction lighting

Air Quality Less than significant N/A Biological Resources Less than significant with mitigation

  • Standard measures to avoid impacts to nesting

birds endangered species sensitive natural birds, endangered species, sensitive natural communities and movements of wildlife Cultural Resources Less than significant with mitigation

  • Standard measures to avoid impacts to

archaeological and paleontological resources as well as human remains Geology, Soils and Mineral Resources Less than significant N/A Greenhouse Gas Emissions Less than significant N/A Emissions Hazards and Hazardous Materials Less than significant with mitigation

  • Standard BMPs to be included in the SWPPP to

prevent accidental releases of hazardous materials

  • Other standard hazardous material, trash and

i

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containment measures

  • Preparation of a hazardous substance

management, handling, storage, disposal and emergency response plan

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SLIDE 17

Summary of Impacts and Mitigation (continued)

Impact Category Significance Level Mitigation Measure Summary

Hydrology and Water Quality Less than significant with mitigation

  • Updating existing SWPPP and including standard

BMPs Quality BMPs. Land Use, Planning & Recreation Less than significant N/A Noise Less than significant with mitigation

  • Compliance with City of Irvine Noise Ordinances
  • Standard equipment and truck noise control
  • Standard equipment and truck noise control

techniques

  • Establishment of a noise disturbance coordinator

to respond to local complaints

  • Securing temporary waiver for construction

activities outside exempted construction hours activities outside exempted construction hours

  • Post construction noise surveys and sound‐

dampening revisions and improvements to ensure compliance Utilities & Energy Less than significant N/A gy g Transportation & Traffic Less than significant N/A

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SLIDE 18

Project Schedule

  • July 3, 2012 – Release SEIR for 45-day public review

y , y p

  • July 16, 2012 – Public informational meeting on SEIR
  • August 17, 2012 – Comment period closes
  • September 24, 2012 – SEIR presented to IRWD Board for certification
  • September 25, 2012 – File Notice of Determination

O 26 2012 f f f

  • October 26, 2012 – End of statute of limitations for challenges
  • November & December 2012 – Planning Commission action on

Conditional Use Permit for the Project

  • December 2012 – IRWD to award construction contract
  • December 2015 – Class B facilities on-line (digestion & dewatering)

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  • June 2016 – Class A facilities on-line (dryer)
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SLIDE 19

Questions? Questions?