HomeMy WebLinkAbout04.c. Receive update regarding the cost analysis for Clean Air Act requirements Page 1 of 6
Item 4.c.
CENTRAL SAN
July 26, 2021
TO: REAL ESTATE, ENVIRONMENTAL AND PLANNING COMMITTEE
FROM: LORI SCHECTEL, ENVIRONMENTALAND REGULATORY COMPLIANCE
DIVISION MANAGER
JEAN-MARC PETIT, DIRECTOR OF ENGINEERINGAND TECHNICAL
SERVICES
REVIEWED BY: ROGER S. BAILEY, GENERAL MANAGER
SUBJECT: RECEIVE AN UPDATE REGARDING THE COST ANALYSIS FOR THE
FURNACE AND RELATED IMPROVEMENTS FOR CLEAN AIR ACT
REQUIREMENTS
An update will be provided to the Committee.
Strategic Plan re-In
GOAL TWO: Environmental Stewardship
Strategy 1—Achieve 100% compliance in all regulations
ATTACHMENTS:
1. Presentation
July 26, 2021 Special REEP Committee Meeting Agenda Packet- Page 29 of 40
Page 2 of 6
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129 REGULATIONS UPDATES
r
Real Estate, Environmental and Planning Committee Meeting
July 26,2021
Jean-Marc Petit, P.E.
_ Director of Engineering and Technical Services
Lori Schectel
Environmental and Regulatory Compliance Division Manager
40 CFR (Code of Federal Regulations)
Part 62 Subpart LLL (129 Rule)
50% cost threshold:
If the cumulative cost of changes over the life of the multiple
hearth furnaces (MHFs) exceeds 50% of the original cost of
constructing the MHFs, the MHFs must meet the emissions
limits for "new/modified" MHFs
Emissions limits for "existing" MHFs are less stringent than the
emissions limits for "new/modified" MHFs
129 Emission Limits
--- _ Existing New/Modified
Pollutant(corrected to 7%02) MHFs MHFs
Cadmium,mg/dscm 0.095 0.0024
.�. Carbon Monoxide,ppmvd 3,800 52
Hydrogen Chloride,ppmvd 1.2 1.2
Mercury,mg/dscm 0.28 0.15
_ Oxides of Nitrogen,ppmvd 220 210
Lead,mg/dscm 0.30 0.0035
Dioxins/Furans(Toxic Equivalency Basis),ng/dscm 0.32 0.0022
Dioxins/Furans(Total Mass Basis),ng/dscm 5.0 0.045
Particulate Matter,mg/dscm 80 60
Sulfur Dioxide,ppmvd 26 26 '
2
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July 26, 2021 Special REEP Committee Meeting Agenda Packet- Page 30 of 40 1
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New
_ ID Fan'
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SI )r•► ttr eK_(41I1� : Bypass
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System
ar+
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Potentialry Future Upgrades Potential
Pump System RehadoWerkt I� Future
Enhanred
Emergency sludge _ MHF and Building New Wet 1 1 1 Air
Loedout Improvemens Seismic Upgrades Pol
tlution
L� system Contralsr
Ve r.
it
EXEMPT Ash HandllnSend
_ Loedout Poten
w 1 • Im ravemems
LIKELY EXEMPT � `� �• � P Snubber Si
Combustion Air Blower Gamer.....I Drive Replacemerrt Stream
NON-EXEMPT Replacement,
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Emergency w PAW— Building 1 Air
[readout lmpmverri �- Seismic UPgrade6 [oPollution
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EXEMPTr. Ash Handling an'
_ Loedout Potential
LIKELY EXEMPT • 1 �* ^r Improvements Future Wat
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Com6uoTfon er Cemershnft Odve Replacement stream
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Emergency sludge _ MHF and Building W t i i Air
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EXEMPT Ash Handling end
Loedout potential
LIKELY EXEMPT �� r b� �• mpravemems FutureWet
Scrubber Side
Combustion Air Blower Centershah Drive Replaoemerrt Stream
NON-EXEMPT Replacements Iw/vFol rma�entt
Description Estimated Costs Percentage of
Original Cost
Original MHF Installation(Commissioned in 1984) • ••',
50%of Original MHF Installation •'.
Cumulative Non-Exempt Improvements(Between 1984-2019)
Solids Project Planned Non-Exempt Improvements(*)
Remaining Balance Before Exceeding 50%Cost Threshold r r
Page 5 of 6
RESPONSE TO CLEAN AIR ACT SECTION 114(A) INFORMATION
REQUEST FOR CENTRAL CONTRA COSTA SANITARY DISTRICT
Prior References to 50% cost analysis item to Board meetings:
• June 20, 2016: Comprehensive Wastewater Master Plan Board
Workshop
• January 27, 2017: Capital Improvement Program (CIP) and Capital
Improvement Budget (CIB) Board Workshop
• March 13, 2018: Engineering & Operations Committee Meeting
Position Paper for Solids Project Design
• April 26, 2018: Board Meeting Position Paper for Solids Project Design
• May 1, 2020: Submittal to United States Environmental Protection
Agency (USEPA) on Modification Cost Analysis
Potential Enhanced Air Pollution Control Technologies Required for 129 Compliance
Air Pollution Control Device Target Pollutants Existing MHF New MHF
®a ( Limits Limits
Hg, Pb,Cd,
�1 Venturi Scrubber* Filt PM, HCl,S02 X X
Dioxins/Furans
Low-NOx Afterburners* NOx X X
- Mercury Modules Hg,S02
Wet Electrostatic Precipitator Pb,Cd, X
(WESP) Fine PM
Zero Hearth CO X
_Y Carbon Adsorption3 Dioxins/Furans X
Selective Catalytic Reduction NOx
- *Included in Solids Handling Project
_ ' a
July 26, 2021 Special REEP Committee Meeting Agenda Packet- Page 33 of 40 4
Page 6 of 6
QUESTIONS
iv�
What is a Maximum Achievable Control Technology
(MACT) standard? The MACT standard is a level of
control that was introduced by Title III of the 1990 Clean
Air Act Amendments. The purpose of these Amendments
was to expedite the development of standards that would
reduce hazardous air pollutant (HAP) emissions.
io
July 26, 2021 Special REEP Committee Meeting Agenda Packet- Page 34 of 40 5