===== PDF PAGE 1 ===== [Extraction: OCR (rendered-page OCR)] DATA CENTER REQUIREMENTS WEST CHICAGO ===== PDF PAGE 2 ===== [Extraction: OCR (rendered-page OCR)] EXISTING DATA CENTER LOCATIONS August 11, 2026 & Ferry Rd Data Centers in the City of Aurora : gs > { Diehl Rd White Oak cr Molitor Rd Molitor Rd > < Bennett Pj 2 2 : : é £ = i z Reckinger Rd 8 5 reer Zz a g E Indian Tr § i & North Aurora Rd ADDRESS STATUS 2725 BILTER RD UNDER CONSTRUCTION (PH. 1), ZONING ENTITLEMENT APPROVAL (PH. 2) Legend 2805 BILTER RD UNDER CONSTRUCTION (5 Datta Centers 2835 BILTER RD CONSTRUCTED STATUS 711 N COMMONS DR SUBMITTED PRIOR TO ENACTMENT OF THE MORATORIUM ies 2905 DIEHL RD CONSTRUCTED 6 near 2705 DIEHL RD CONSTRUCTED SUBMITTED PRIOR TO 2805 DIEHL RD CONSTRUCTED ° EO TEENT OF, THE 4267 MERIDIAN PKWY CONSTRUCTED Si ace ace 4245 MERIDIAN PKWY SUBMITTED PRIOR TO ENACTMENT OF THE MORATORIUM 4235 MERIDIAN PKWY PERMIT ISSUED 0 § 05 1 psbury Dr 2 Miles Ll ra] SS, iz 1 L 2 es i 1 L | = vA Plain Av ca Dearborn Av 5 ae & az ===== PDF PAGE 3 ===== [Extraction: embedded PDF text] REASONS FOR AMENDMENTS TO BUILDING CODE AND CODE OF ORDINANCES • Staff is seeing an increased number of data center and/or warehouse development requests, while attempting to address Citizen's complaints of existing data centers and/or warehouses. Staff's research is finding that other municipalities have passed policies to address these issues pre-development. • Citizens have expressed concerns over noise, traffic, and other environmental impacts of data centers and/or warehouses. Privacy and AI concerns have also been prevalent. • Ultimately, we wanted to clarify the data center and/or warehouse development process while ensuring potential long-term community and environmental impacts are addressed prior to construction. • City Council voted to approve a 180-day moratorium September 25, 2025 so staff could suggested new language to address concerns. August 11, 2026 3 ===== PDF PAGE 4 ===== [Extraction: embedded PDF text] NOISE CONCERNS • Largest noise emitters are diesel emergency power generators and HVAC chiller systems. • According to numerous municipalities, noise is their largest complaint when located near residential. • HVAC Chillers are constantly running system to cool computer systems • Emergency Generators run in the event of a power outage and need to be exercised regularly to ensure functionality in the event of an emergency. August 11, 2026 4 Image source: sensear.com ===== PDF PAGE 5 ===== [Extraction: embedded PDF text] WATER CONCERNS • Water-based evaporative cooling utilizes vast amounts of water. •A small 1-megawatt (MW) data center can consume ~18,500 gallons daily •Medium-sized data centers may use ~110 million gallons per year •Large-scale data centers, particularly those with AI workloads, can consume up to 5 million gallons per day (~1.8 billion gallons annually), comparable to the water needs of a town of 10,000 to 50,000 people • Data centers can increase stormwater runoff and pollution due to large impervious surfaces. August 11, 2026 Image source: zutacore.com 5 ===== PDF PAGE 6 ===== [Extraction: embedded PDF text] EMISSIONS CONCERNS •Air quality: Diesel generators can cause a notable increase in polluting particulates in the air, including NOx, PM2.5, carbon monoxide (CO), and HAPs like formaldehyde and benzene; which can negatively affect health •Global: ~0.5% of total CO₂ emissions annually (~330 Mt CO₂e in 2020) •U.S.: ~2.18% of total CO₂ emissions annually (~105 Mt CO₂e in 2023) •Hyperscale U.S.: ~1.10% of U.S. CO₂ emissions annually (~52 Mt CO₂ in August 11, 2026 Image source: impactlab.com 62024–2025) ===== PDF PAGE 7 ===== [Extraction: embedded PDF text] PRIVACY AND TRANSPARENCY CONCERNS • Community concerns about privacy, biometric data, and AI uses; BIPA • There was no public process or notification required when new data centers were built • Operationally we do not know exactly how much energy, pollution, and water these facilities use every year • We do not know the impacts of these data centers on the nearby neighborhoods Image source: serverlift.com August 11, 2026 7 ===== PDF PAGE 8 ===== [Extraction: embedded PDF text] ELECTRICITY COSTS CONCERNS • Data centers use large quantities of electricity for computing power and cooling of servers • Current estimates suggest that data centers account for 3% of global electricity consumption, with predictions indicating a rise to a potential 10% by 2030. • A single data center building can use between 60-90MW of power at peak demand (more than 15,000 households). • A 25% rate hike just happened in ComEd territory, with some consumers complaining of triple-digit increases. PJM showed that 70 percent — or $9.3 billion — of this year’s increase in electricity cost was the result of data center demand. • Another rate hike is promised in 2026 August 11, 2026 8 ===== PDF PAGE 9 ===== [Extraction: embedded PDF text] Pause ProposeListen Vote/ • 180-day • Define data• Increased Change moratorium on centers data center data center & • Council to requests • Require warehouse vote on text Council• Concerns developments amendments approval on about noise, & lift • Staff new data water, energy moratorium researched centers use, pollution by March 24 best practices • Clarify and• No current and wrote • If not expand public requirements proposed approved, new input process for data language data centers and make centers. changes would be reporting• No required treated as • Listen and transparent public before – no record public • Add new engagement requirements, comments requirements process no public for noise, input, no vibrations, Council water, energy, approval & emissions required August 11, 2026 9 ===== PDF PAGE 10 ===== [Extraction: OCR (rendered-page OCR)] THE NEW STANDARDS August 11, 2026 10 ===== PDF PAGE 11 ===== [Extraction: embedded PDF text] WHY NEW DATA CENTER STANDARDS • Data centers bring economic activity but also significant local impacts • Facilities can strain electric grids, water supplies, and infrastructure • Noise, vibration, and visual impacts affect nearby neighborhoods • Community concerns about privacy, biometric data, and AI uses • Need for predictable rules to protect residents while providing clarity for developers • Aligns with Aurora’s Sustainability Plan & GHG reduction goal August 11, 2026 11 ===== PDF PAGE 12 ===== [Extraction: embedded PDF text] AURORA DATA CENTER & WAREHOUSE ORDINANCE PACKAGE • A coordinated regulatory framework governing siting, construction, operation, and oversight for data centers • Designed for transparency, accountability, and legal defensibility • Four ordinances deal with different areas of amended text in the Zoning Ordinance, Building Code, and Code of Ordinances. August 11, 2026 12 ===== PDF PAGE 13 ===== [Extraction: embedded PDF text] TIMELINE Sept Jan Feb Feb Mar Mar Mar Mar Mar Mar 25 06 12 18 03 04 11 18 18 24 2025 2026 2026 2026 2026 2026 2026 2026 2026 2026 Create a staff working group Conduct research Engage stakeholders, residents, & cities Data Center Regulations Passed Draft policy language August 11, 2026 13 ===== PDF PAGE 14 ===== [Extraction: embedded PDF text] PRELIMINARY RESEARCH - ACTIONS BY OTHER MUNICIPALITIES St, Charles, MO One-year moratorium in response to community pushback on a proposed data center Douglas County, GA 90-day moratorium on data centers to study their impact on the community DeKalb County, GA 100-day moratorium on new data center developments to establish regulations Cowetta County, GA 180-day moratorium after public concerns on data centers Chicago, IL Passed a data center ordinance that includes studying noise and environmental impacts by December 31, 2025 Elk Grove Village, IL Created a district specifically zoned for data centers; requirements for higher fences, less parking Loudoun County, VA Dedicated data center district with clear guidance; requires public hearings for all new projects Fredericksburg, VA Created region-wide plan for data center development, including shared water and utility use planning August 11, 2026 14 ===== PDF PAGE 15 ===== [Extraction: OCR (rendered-page OCR)] THANK YOU! The residents of Aurora Edged Metropolitan Mayors Caucus and the participants of | SLS Consultants the Data Center Task Force Naperville, IL Illinois Environmental Council Yorkville, IL Sierra Club Minooka, IL Natural Resources Defense Council Chicago, IL Environmental Law and Policy Center Hobart, IN IL American Planning Association DuPage Mayor's and Managers Conference (DMCC) American Civil Liberties Union Kane County Citizens Utility Board Electronic Frontier Foundation IL American Planning Association ComEd Elevate CME CyrusOne h 24, 2026 15 ===== PDF PAGE 16 ===== [Extraction: OCR (rendered-page OCR)] 175 150 125 100 75 50 25 DATA CENTER & WAREHOUSE MORATORIUM SURVEY RESPONSES 204 201 187 VT 167 145 130 112 : Based on comments & responses from February 8th - March 3rd Q1: WHAT ARE YOUR BIGGEST CONCERNS ABOUT DATA CENTERS AND/OR WAREHOUSES? CHECK ALL THAT APPLY. TOTAL RESPONSES: 1 ,386from(226respondents TOP CONCERNS: Y Increased Utility Bills v¥ Water Consumption/Water Quality v High Energy Use Y Air pollution/Air Quality Y Noise v Increased Greenhouse Gas Emissions © Noise Vibrations © Air Pollution/Air Quality © © High Energy Use © Increased Greenhouse Gas Emissions |= @ Water Consumption/Water Quality © Increased Utility Bills © Traffic/Land Use © Local Jobs 16 ===== PDF PAGE 17 ===== [Extraction: OCR (rendered-page OCR)] DATA CENTER & WAREHOUSE MORATORIUM SURVEY RESPONSES 15 (6.8%) weep} Q4: WHAT WARD DO YOU CURRENTLY RESIDE IN? (oa) TOTAL RESPONSES: i aa 219 Responses, 7 skipped ¥Y All 10 Aurora Wards are represented. v 27 responders were unsure of which ward they reside in. — 30 (13.7%) ¥ Majority responses came from Ward 4, Ward 10 and Ward 9. 24 (11.0%) @ Notan Aurora Resident © Wardi @ Ward2 @wWads @Wad9 @Wardi0 © NotSure 417 (7.8%) ~ 10 (4.6%) @ Ward3 @Ward4 OQ Wad5 @Wad6 © Ward7 ===== PDF PAGE 18 ===== [Extraction: embedded PDF text] PUBLIC SURVEY SUMMARY TO-DATE Overall Community Sentiment My ComEd bill in Aug '25 (for 2 people A significant portion of respondents called for a permanent ban or moratorium on all future data in a townhouse) went from " centers in Aurora ~$125/month (summer) to $750/month in Sept '25. From 1 Residents emphasized that the City should prioritize the “health, environment, and finances” of its month to another! Outrageous!citizens over corporate profits. ComEd told me to get used to Residents expressed deep anxiety over the rising cost of electricity and water, fearing that data $300/month bills. As would be centers are straining the grid and passing infrastructure costs onto homeowners. basically my new normal." Skepticism regarding the effectiveness of fines, with residents worried that tech companies will "Will the City reimburse residents for simply view fines as a "cost of doing business." their increased electric bills-using the 'profits' they get from the dataResidents frequently cited the neighboring city of Naperville's decision to reject similar projects as a model Aurora should follow. centers?" While the city anticipates tax-revenue, many residents argue the trade-offs are not worth the perceived "Please, don't sell out residents, loss in property values and quality of life. their kids' quality of life, property values...Make a permanent Require Community Benefit Agreements (CBAs) and fiscal impact analyses for every project. 18 moratorium!! NO more data centers."August 11, 2026 ===== PDF PAGE 19 ===== [Extraction: OCR (rendered-page OCR)] PROPOSED CHANGES - HIGH LEVEL Topic BEFORE (Current Situation) AFTER (Proposed Changes) Clear day and nighttime noise limits (that are lower than state requirements) at property lines. Professional sound study required before approval. Require continuous monitoring of noise & vibration. Independent sound testing before the facility opens and if complaints are filed. Detailed water study required showing source, demand, and community impact. Difficult to measure and enforce NOISE Illinois pollution control board standards referenced No required water impact study Encourage water-efficient cooling systems and prohibit contaminated discharge WATER USE es . . . . specific to data centers. & evaporative cooling. Annual reporting required. Water use limits set at approval. Penalties if approved limits are exceeded. On-site renewable energy or battery storage required. Energy efficiency standards ENERGY USE&GRID No specific energy efficiency or and peak demand management plan required. Require energy efficiency STRAIN renewable requirements. standards and peak-demand management plans. Energy plan reviewed during approval. Reporting of electricity use. Modular nuclear prohibited. Backup generators permitted under Cleaner engine standards required. Air quality impact review required. Must meet EMISSIONS Ps . P state and federal air quality standards. Simultaneously testing restricted to 2 general regulations. . generators at a time. PRIVACY & Al No local standards specific to data Required compliance with strict biometric data privacy safeguards. Written data PROTECTIONS centers. governance policies required. Annual compliance certification. No public comment or Council All new data centers will require City Council approval and public notice. Annual TRANSPARENCY oversight required. No ongoing public public reporting of water use, energy consumption, and noise. Reports posted reporting specific to data centers. online. ===== PDF PAGE 20 ===== [Extraction: embedded PDF text] AURORA DATA CENTER & WAREHOUSE ORDINANCE PACKAGE Transparent Performance Renewable Transparent Public Process Standards for and Resilient Operations for new data new data Grid requirements centers centers requirements for new and for new data existing data centers centers August 11, 2026 20 ===== PDF PAGE 21 ===== [Extraction: embedded PDF text] AURORA DATA CENTER & WAREHOUSE ORDINANCE PACKAGE Transparent Public Process for new data centers: • All new data centers are conditional use • Public hearing required • City Council approval required • Public notice online, in newspapers, and mailed • Water study and plan required • Energy plan required • Sound study and plan required with verification before final occupancy permit • Development Agreement required August 11, 2026 21 ===== PDF PAGE 22 ===== [Extraction: embedded PDF text] AURORA DATA CENTER & WAREHOUSE ORDINANCE PACKAGE Performance Standards for new data centers: • Daytime and nighttime noise limits (56 daytime; 46 nighttime) • Vibration limits • Energy consumption limits (1.2 PUE); modular nuclear prohibited • Water use limits (0.2 WUE); evaporative cooling prohibited August 11, 2026 22 ===== PDF PAGE 23 ===== [Extraction: embedded PDF text] AURORA DATA CENTER & WAREHOUSE ORDINANCE PACKAGE Renewable and Resilient Grid requirements for new data centers: • On-site renewable (25% of peak load) or • On-site battery storage (50% of peak load for 15 minutes) *Alternative compliance available if on-site is not feasible August 11, 2026 23 ===== PDF PAGE 24 ===== [Extraction: embedded PDF text] AURORA DATA CENTER & WAREHOUSE ORDINANCE PACKAGE Transparent Operations requirements for new and existing data centers: • Annual energy consumption reporting requirement • Annual water use reporting requirement • Annual noise testing requirement • Bio metric data protection compliance certificate requirement • Backup generator testing limited to two at a time • Continuous vibration monitoring requirement August 11, 2026 24 ===== PDF PAGE 25 ===== [Extraction: embedded PDF text] THE FOUR ORDINANCES AT A GLANCE 26-0112 26-0114 26-0115 26-0092 Data Center Zoning Warehouse Zoning Building Code Responsible Data Center Amendments Amendments Amendments • New Chapters 50 & • Zoning • Zoning • Building Code 51 in Code of • Defines Data Centers • Warehouse • Clarifies ability to Ordinances limitation in the ORI require Testing & • Creates performance • Addresses Data requirements & • Vibration Stanards Verification for Center ongoing conditional use for all ORI, M-1,M-2 applicable standards operations & • References new transparency Zoning requirements • References new Zoning requirements August 11, 2026 25 ===== PDF PAGE 26 ===== [Extraction: embedded PDF text] DATA CENTER PROPERTY TAXES Address 2024 Tax Year* City of Aurora Taxes* 2905 Diehl Rd $1,455,769.62 $301,783.96 2805 Diehl Rd “ “ “ “ 2705 Diehl Rd “ “ “ “ 2835 Bilter Rd $55,478.28 $11,500.76 4267 Meridian Pkwy $139,164.88 $28,849.16 2725 Bilter Rd $2,230.62 $462.42 2805/2815 Bilter Rd $67,076.36 $13,905.06 711 N Commons Dr $101,368.54 $21,013.90 4235 Meridian Pkwy $163,646.62 $33,924.28 4245 Meridian Pkwy “ “ “ “ Total $1,984,734.92 $411,439.54 *Data from DuPage County Treasurer’s website Constructed Under construction Submitted prior to Permit issued August 11, 2026 26 moratorium enactment ===== PDF PAGE 27 ===== [Extraction: embedded PDF text] ESTIMATED MUNICIPAL UTILITY DUTY (MUD) TAXES Estimated MUD Taxes at Address Estimated Megawatts* Estimated MUD in 2026* Full Capacity* 2905 Diehl Rd 90 MW $940,680.00 $940,680.00 2805 Diehl Rd “ “ “ “ “ “ 2705 Diehl Rd “ “ “ “ “ “ 2835 Bilter Rd 48 MW $501,696.00 $83,656.00 4267 Meridian Pkwy 6 MW $62,712.00 $62,712.00 2725 Bilter Rd 24 MW $250,848.00 $75,254.00 2805/2815 Bilter Rd 24 MW $250,848.00 $0.00 711 N Commons Dr 24 MW $250,848.00 $0.00 4235 Meridian Pkwy 24 MW $250,848.00 $0.00 4245 Meridian Pkwy 9 MW $94,068.00 $0.00 Total 249 MW $2,602,548.00 $1,204,110.00 *Estimates are based on available data but may be inaccurate; actual consumption or MUD taxes likely varies August 11, Constructed Under construction Submitted prior to Permit issued 27 2026 moratorium enactment ===== PDF PAGE 28 ===== [Extraction: embedded PDF text] SUMMARY This ordinance reflects a balance between economic competitiveness, infrastructure protection, and resident privacy — recognizing that data centers are long-term facilities with long-term impacts. August 11, 2026 28 ===== PDF PAGE 29 ===== [Extraction: OCR (rendered-page OCR)] MAY 307TH, 2026 oittom=umne POWER Act Lobby Day will protect our state’s people and environment from big corporate polluters. Register now to join the Illinois’ environmental movement will gather at the Illinois Environmental Council on May State Capitol to meet with legislators and push for key 30th environmental priorities. = Protecting Our Energy, and Ratepayers August 11, 2026 Water, ===== PDF PAGE 30 ===== [Extraction: OCR (rendered-page OCR)] THANK YOU! Alison Lindburg, Director of Sustainability Contact: lindburga@aurora.il.us August 11, 2026 30