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Earlier editions: 2026-09

Title 18 — DEVELOPMENT CODE›Division II — Zoning Districts – Uses and Standards

Concord Municipal Code Ch. 18.40 Office and Commercial Districts (co, Cmx, Nc, Sc, and Rc)

Concord Municipal Code · 2026-10 edition · updated 2026-10-05 · Concord

Cite as: Concord Municipal Code Chapter 18.40 · Text as of 2026-10-05

18.40.010 Purpose.

This chapter lists the uses that may be permitted within the office and commercial zoning districts, the type of permit or approval required for each use, and basic development standards for the site and building. The purpose of each district is as follows:

A. CO – Community Office. The CO district is applied to areas of the city appropriate for a mix of small-scale single and multiple tenant businesses, professional, and medical offices in low-rise buildings that are compatible with adjacent residential areas. Building intensity may be up to 1.0 FAR. Residential uses consistent with the residential medium density may also be allowed. The CO district is found along major thoroughfares including portions of East Street, Salvio Street, Willow Pass Road, Clayton Road, Oak Grove Road, Treat Boulevard, and Monument Boulevard. The CO district is consistent with and implements the community office (CO) land use designation of the general plan.

B. CMX – Commercial Mixed-Use. The CMX district is applied to areas of the city appropriate for an integrated mix of neighborhood commercial uses, including retail and personal services on lots 10,000 square feet or larger, and offices at up to 1.0 FAR, together with or adjacent to residential uses at densities ranging from 11 to 40 units per net acre. The CMX district includes retail, office, and residential properties, and is primarily located along portions of Clayton Road, Monument Boulevard, and Willow Pass Road. The CMX district is consistent with and implements the commercial mixed-use (CMU) land use designation of the general plan.

C. NC – Neighborhood Commercial. The NC district is applied to areas of the city appropriate for neighborhood shopping centers including retail and personal service uses up to 0.35 FAR. The NC district is applied to neighborhood shopping centers including Clayton Valley Shopping Center, Dana Plaza, Olivera Crossings, Oak Grove Plaza, and Solano Plaza. The NC district allows residential uses on the second floor at densities up to 24 dwelling units per net acre. The NC district is consistent with and implements the neighborhood commercial (NC) land use designation of the general plan.

D. SC – Service Commercial. The SC district is applied to areas of the city appropriate for commercial uses such as automobile services, auto-oriented uses, light industry, contractors’ yards, and building materials storage, at up to 0.8 FAR. The SC district also allows retail, personal service, restaurant, and offices uses. The SC district is found on Monument Boulevard, Detroit Avenue, Cloverdale Avenue, on the east side of Market Street south of Concord Avenue, and Galaxy Way at Via de Mercados. The SC district provides areas for uses that typically require outdoor storage and activities with higher volumes of truck traffic, noise, and visual impacts. The SC district is consistent with and implements the service commercial (SC) land use designation of the general plan.

E. RC – Regional Commercial. The RC district is applied to areas of the city appropriate for a mix of regional-scale commercial uses, including regional shopping centers, big box retail, new automobile dealerships, and associated services at up to 0.5 FAR. The RC district is applied to areas with good freeway access, including Sunvalley Shopping Center and the Willows Shopping Center along I-680, Lowe’s and the Solano Drive-In Theater off Highway 4, along the west side of Market Street, and along Concord Avenue between Highway 242 and Interstate 680. The RC district is consistent with and implements the regional commercial (RC) land use designation of the general plan. [Ord. 17-11 § 3 (Exh. 8); Ord. 12-4. DC 2012 § 122-130].

Exceptions & meaning →

18.40.020 Table 18.40.020 – Office and commercial districts – Allowed uses and permit requirements.

A. Applicability. Table 18.40.020 identifies the uses allowed by the development code in each office and commercial zoning district and the type of permit required to establish each use. See CDC 18.25.030(B) or Division VII of this title (Permits and Permit Procedures). Additional requirements may apply pursuant to Division IV (Development Standards) and Division V (Standards for Specific Uses) of this title.

Table 18.40.020 Office and Commercial Districts Allowed Uses and Permit Requirements Table 18.40.020 Office and Commercial Districts Allowed Uses and Permit Requirements Table 18.40.020 Office and Commercial Districts Allowed Uses and Permit Requirements Table 18.40.020 Office and Commercial Districts Allowed Uses and Permit Requirements Table 18.40.020 Office and Commercial Districts Allowed Uses and Permit Requirements Table 18.40.020 Office and Commercial Districts Allowed Uses and Permit Requirements ZC = Permitted Use , Zoning Clearance AP = Administrative Permit Required MP = Minor Use Permit Required UP = Use Permit Required 6409 = Section 6409 Application – = Use Not Allowed
Land Use Classifications Permit Required by District Permit Required by District Permit Required by District Permit Required by District Permit Required by District Additional Requirements
Land Use Classifications CO CMX NC SC RC Additional Requirements
Office, Commercial, and Retail Uses Office, Commercial, and Retail Uses Office, Commercial, and Retail Uses Office, Commercial, and Retail Uses Office, Commercial, and Retail Uses Office, Commercial, and Retail Uses Office, Commercial, and Retail Uses
Adult Day Care Center – ZC (5) ZC (5) ZC ZC
Adult-Oriented Business – – – – – Chapter 18.210 CDC, Adult-Oriented Businesses
Animal Services Animal Services Animal Services Animal Services Animal Services Animal Services Animal Services
Boarding, Kennel – UP UP MP MP
Dog Day Care, Training – ZC ZC (2) ZC ZC
Grooming – ZC ZC (2) ZC ZC
Hospital, Veterinary Clinic ZC ZC ZC (2) ZC ZC
Antique, Collectible Store – ZC (4) ZC ZC ZC
Automobile Sales and Rental/Leasing Automobile Sales and Rental/Leasing Automobile Sales and Rental/Leasing Automobile Sales and Rental/Leasing Automobile Sales and Rental/Leasing Automobile Sales and Rental/Leasing Automobile Sales and Rental/Leasing
Auction – – – ZC –
Brokers, Office Only ZC ZC ZC ZC ZC
Brokers, Office with Vehicle Display AP AP – ZC ZC
Dealership, New – – – UP ZC
Dealership, Used – – – ZC –
Dealership, Motorcycles – – – ZC ZC
Rental – – – AP MP
Automobile Services and Repair Automobile Services and Repair Automobile Services and Repair Automobile Services and Repair Automobile Services and Repair Automobile Services and Repair Automobile Services and Repair
Car Wash, Attended – – UP AP UP CDC 18.200.090 , Gas stations and car washes
Car Wash, Unattended – – – UP – CDC 18.200.090 , Gas stations and car washes
Gas Station – – UP UP UP CDC 18.200.090 , Gas stations and car washes
Maintenance Services – UP UP ZC ZC
Major Repair/Body Work – – – ZC –
Minor Repair – – UP ZC AP
Banks and Financial Services Banks and Financial Services Banks and Financial Services Banks and Financial Services Banks and Financial Services Banks and Financial Services Banks and Financial Services
Bank, Credit Union – ZC (4) ZC (2) ZC (2) ZC
Bank with Drive-Through Service – UP UP UP MP CDC 18.200.060 , Drive-through facilities
Check Cashing Business – – – – –
Building Materials Sales and Services Building Materials Sales and Services Building Materials Sales and Services Building Materials Sales and Services Building Materials Sales and Services Building Materials Sales and Services Building Materials Sales and Services
No Outdoor Storage – – ZC ZC ZC
With Outdoor Storage – – – AP UP CDC 18.200.160 , Outdoor sales and displays
Business Support Services ZC ZC (3) ZC (2, 3) ZC (3) ZC (3)
Catering Service – ZC (4) ZC (2) ZC ZC
Eating and Drinking Establishments Eating and Drinking Establishments Eating and Drinking Establishments Eating and Drinking Establishments Eating and Drinking Establishments Eating and Drinking Establishments Eating and Drinking Establishments
Bar , Night Club, Lounge – UP UP UP UP CDC 18.200.080 , Entertainment uses
Food Vendor Group Site – MP MP MP MP CDC 18.200.210 , Food vendor group sites
Micro-Brewery/Distillery – – – MP MP CDC 18.200.040 , Alcoholic beverage sales
Micro-Brewery/Distillery, Large (6) – – – UP UP CDC 18.200.040 , Alcoholic beverage sales
Restaurant, Full Service – AP AP UP ZC CDC 18.200.040 , Alcoholic beverage sales
Restaurant, Limited Service – ZC (4) ZC AP ZC
Restaurant, with Drive-Through – UP UP UP UP CDC 18.200.060 , Drive-through facilities
Restaurant, with Live Entertainment – – UP UP UP CDC 18.200.080 , Entertainment uses
Tasting Room – – – AP AP CDC 18.200.040 , Alcoholic beverage sales
Fitness Facility, Health Club – AP AP (2) AP (2) AP
Food, Beverage Sales Food, Beverage Sales Food, Beverage Sales Food, Beverage Sales Food, Beverage Sales Food, Beverage Sales Food, Beverage Sales
Convenience Store, no Alcohol Sales – ZC (4) ZC ZC ZC
Convenience Store, with Alcohol Sales – UP UP – UP CDC 18.200.040 , Alcoholic beverage sales
Grocery Store – ZC (4) ZC ZC ZC
Liquor Store – – UP – UP CDC 18.200.040 , Alcoholic beverage sales
Hotel, Motel – UP UP UP UP
Maintenance Services Maintenance Services Maintenance Services Maintenance Services Maintenance Services Maintenance Services Maintenance Services
Office with No Outdoor Storage or Activities – – – ZC –
Office with Outdoor Storage or Activities – – – AP –
Nursery, Preschool, Childcare UP UP UP AP AP CDC 18.200.050 , Child day care facilities
Offices Offices Offices Offices Offices Offices Offices
Administrative, Information Processing ZC ZC – ZC ZC
Professional ZC ZC ZC (2) ZC (2) ZC
Personal Services Personal Services Personal Services Personal Services Personal Services Personal Services Personal Services
General ZC ZC ZC (2) ZC (2) ZC (2)
Improvement, Instructional – ZC ZC (2) ZC ZC
Restricted – – MP MP MP
Repair Service, Appliance and Small Equipment – – UP ZC –
Retail Sales Retail Sales Retail Sales Retail Sales Retail Sales Retail Sales Retail Sales
Big Box – UP UP UP UP
General – ZC (4) ZC ZC ZC
Nursery, Garden Center – UP ZC ZC ZC CDC 18.200.160 , Outdoor sales and displays
Restricted – – MP MP MP
Retail Sales with Drive-Through – UP UP UP UP CDC 18.200.060 , Drive-through facilities
Secondhand Sales – AP AP AP –
Business Park and Industrial Uses Business Park and Industrial Uses Business Park and Industrial Uses Business Park and Industrial Uses Business Park and Industrial Uses Business Park and Industrial Uses Business Park and Industrial Uses
Auto Wrecking, Dismantling Yard – – – – –
Contractors, Special Trade Contractors, Special Trade Contractors, Special Trade Contractors, Special Trade Contractors, Special Trade Contractors, Special Trade Contractors, Special Trade
Cabinet Shop – – – ZC –
Contractor Office, No Outdoor Storage ZC ZC – ZC –
Contractor Yard, with Outdoor Storage – – – ZC –
Fleet-Based Service – – – ZC UP
Freight and Truck Terminal – – – – –
Heavy Vehicle and Large Equipment, Sales/Rental, Service, and Repair
Commercial Vehicles and Equipment – – – AP –
Recreational Vehicle – – – AP –
Laboratory, Research, and Development ZC AP – ZC –
Manufacturing, Processing Manufacturing, Processing Manufacturing, Processing Manufacturing, Processing Manufacturing, Processing Manufacturing, Processing Manufacturing, Processing
Artisan/Custom Product – – – ZC –
Industry, Heavy – – – – –
With No Outdoor Storage or Activities – – – ZC –
With Outdoor Storage or Activities – – AP –
Warehouse Show Room with Assembly and Sales – – – ZC –
Media Production Facility ZC ZC – ZC –
Storage Storage Storage Storage Storage Storage Storage
Hazardous Materials – – – – –
Self-Storage Facility, Mini-Storage – – – UP –
Vehicle – – – UP –
Towing Services – – – UP –
Warehouse, No Outdoor Storage – – – ZC –
Warehouse, with Outdoor Storage – – – ZC –
Wholesaling, Distribution – – – AP –
Public/Quasi-Public and Recreational Uses
Airport – – – – –
Ambulance Service – UP – AP –
Cannabis Uses Cannabis Uses Cannabis Uses Cannabis Uses Cannabis Uses Cannabis Uses Cannabis Uses
Commercial Cultivation – – – – –
Distribution (Type 11) – – – – –
Distribution Transport Only (Type 13) – – – – –
Indoor Personal Cannabis Cultivation ZC ZC ZC ZC ZC Up to six plants per residence, pursuant to state law
Industrial Hemp Cultivation – – – – –
Manufacturing – – – – –
Microbusiness – – – – –
Non-Storefront Retail – – – – –
Storefront Retail – – – – –
Testing Laboratory – – – – –
Cemetery, Columbarium, Mausoleum – – – – –
Conference, Convention Facility UP – – – UP
Cultural Institution – UP UP UP UP
Emergency and Homeless Shelter – – – – – CDC 18.200.070 , Emergency shelter and homeless shelters
Low Barrier Navigation Center ZC, UP (7) ZC, UP (7) ZC, UP (7) – – California Government Code Section 65660 et seq.
Farmers’ Market – – UP UP UP
Funeral Parlor, Mortuary – – UP UP UP
Government Office ZC ZC ZC ZC ZC
Heliport – – – – –
Library ZC ZC (2) ZC (2) ZC (2) ZC
Medical Medical Medical Medical Medical Medical Medical
Hospital, Medical Center – – – – –
Medical Services Facility AP – AP (2) AP (2) –
Nursing Facility/Extended Care – UP UP UP –
Urgent Care Facility AP AP (4) AP (2) AP AP
Meeting Facility, Public/Private UP UP UP UP UP
Military – – – – –
Parking Facility AP – AP AP AP
Public Maintenance and Service Facility – – – AP –
Recreational Facilities Recreational Facilities Recreational Facilities Recreational Facilities Recreational Facilities Recreational Facilities Recreational Facilities
Bingo Hall – – – – UP
Commercial Recreation, Indoor – AP (4) AP UP ZC
Golf Course, Country Club – – – – – CDC 18.200.130 , Mechanical and electronic games
Park and Recreation Facility – – – – –
Residential Recreation Facility – AP (5) – – –
Sports and Entertainment, Assembly – – UP – UP CDC 18.200.080 , Entertainment uses
Sports and Recreation Facility – – UP – UP CDC 18.200.130 , Mechanical and electronic games
Recycling Facilities Recycling Facilities Recycling Facilities Recycling Facilities Recycling Facilities Recycling Facilities Recycling Facilities
Small Collection Facility – – AP AP AP CDC 18.200.170 , Recycling facilities
Large Collection Facility – – – UP – CDC 18.200.170 , Recycling facilities
Processing Facility – – – – – CDC 18.200.170 , Recycling facilities
Religious Facility UP UP UP – –
Schools Schools Schools Schools Schools Schools Schools
Elementary, Middle, Secondary – MP – – –
College, University – MP – – –
Trade School , Vocational Training AP AP AP AP AP
Social Services Facility UP UP UP UP –
Theater, Auditorium – UP UP – UP CDC 18.200.130 , Mechanical and electronic games
Utility Facility, Transmission Towers – – ZC ZC ZC
Wireless Communications Facility AP, MP or 6409 AP, MP or 6409 AP, MP or 6409 AP, MP or 6409 AP, MP or 6409 Chapters 18.205 and 18.207 CDC
Residential Uses Residential Uses Residential Uses Residential Uses Residential Uses Residential Uses Residential Uses
Bed and Breakfast Inn – UP – – –
Dwelling , Dwelling Unit, Housing Unit Dwelling , Dwelling Unit, Housing Unit Dwelling , Dwelling Unit, Housing Unit Dwelling , Dwelling Unit, Housing Unit Dwelling , Dwelling Unit, Housing Unit Dwelling , Dwelling Unit, Housing Unit Dwelling , Dwelling Unit, Housing Unit
Single-Family, Detached ZC – – – –
Single-Family, Detached – Small Lot Subdivision UP UP – – –
Single-Family, Attached ZC ZC – – – Chapter 18.152 CDC, Objective Design Standards; Chapter 18.120 CDC, Affirmatively Furthering Fair Housing Overlay District
Duplex ZC ZC – – – Chapter 18.152 CDC, Objective Design Standards
Multifamily ZC (8) ,UP ZC (8) ,UP ZC (8) ,UP (1) – – Chapter 18.152 CDC, Objective Design Standards; Chapter 18.120 CDC, Affirmatively Furthering Fair Housing Overlay District
Family Day Care Home (14 or fewer children) ZC (5) ZC (5) ZC (5) – –
Group Housing UP UP – – –
Home-Based Business – ZC (5) , AP ZC (2) , AP – – CDC 18.200.100 , Home-based business es
Live/Work Unit – ZC (5) – – – CDC 18.200.110 , Live/work or work/live units
Mixed-Use Projects ZC (9) ,UP ZC (9) ,UP ZC (9) ,UP – – Chapter 18.152 CDC, Objective Design Standards CDC 18.200.140 , Mixed-use projects ; Chapter 18.120 CDC, Affirmatively Furthering Fair Housing Overlay District
Mobile Home Park – – – – –
Residential Care Facility, Small ZC (5) ZC (5) – – –
Residential Care Facility, Large – MP – – –
Residential Facility for Seniors, Assisted Living – UP UP – –
Supportive Housing ZC, UP (7) ZC, UP (7) ZC (1) , UP (7) – – California Government Code Section 65650 et seq.
Transitional Housing, Multifamily UP UP UP (1) – –
Transitional Housing, Single-Family ZC ZC – – –
Work/Live Unit – – – AP – CDC 18.200.110 , Live/work or work/live units
Open Space and Agricultural Uses Open Space and Agricultural Uses Open Space and Agricultural Uses Open Space and Agricultural Uses Open Space and Agricultural Uses Open Space and Agricultural Uses Open Space and Agricultural Uses
Companion Animal , Horses, Fowl – – – – –
Community Garden AP AP AP AP AP
Crop Production, Orchard, Vineyard ZC ZC ZC ZC ZC
Livestock , Grazing – – – – –
Mining and Quarrying – – – – –

(1) Not allowed on ground floor.

(2) Allowed to occupy up to 20 percent gross area of shopping center or multi-tenant building or 20 percent street frontage of one building.

(3) No outdoor facilities, storage, or activities are allowed.

(4) Requires a minimum lot size of 10,000 square feet.

(5) Allowed with residential use only.

(6) A facility which exceeds 3,000 square feet.

(7) Use permit required for any facility that does not meet the requirements of the referenced article of the California Government Code.

(8) Zoning clearance required for multifamily projects when a project is located entirely on a parcel or parcels listed in the current housing element sites inventory that conform to objective development standards and Chapter 18.152 CDC (Objective Design Standards).

(9) Zoning clearance required for mixed-use projects when a project is located entirely on a parcel or parcels listed in the current housing element sites inventory, with at least two-thirds of the total square footage designed for residential use, and that conform to objective development standards and Chapter 18.152 CDC (Objective Design Standards).

[Ord. 26-425.1 § 10 (Exh. D); Ord. 24-7 § 7 (Exh. D); Ord. 24-6 § 8 (Exh. D); Ord. 24-5 § 7 (Exh. D); Ord. 21-2 § 5 (Exh. E); Ord. 20-4 (Exh. B); Ord. 19-5 § 1 (Exh. D); Ord. 18-3 § 7 (Exh. A); Ord. 17-13 § 3 (Exh. A); Ord. 17-11 § 3 (Exh. 8); Ord. 17-5 § 2 (Exh. I); Ord. 17-2 § 2 (Exh. F); Ord. 15-8 § 3 (Exh. B); Ord. 14-6 §§ 3, 4; Ord. 13-5; Ord. 12-5; Ord. 12-4. DC 2012 § 122-131].

Exceptions & meaning →

18.40.030 Table 18.40.030 – Office and commercial districts – Development standards.

Subdivisions, new uses and structures, and alterations to existing uses and structures shall be designed, constructed, and established in compliance with the requirements specified in Table 18.40.030. Additional requirements may apply pursuant to Division IV (Development Standards) and Division V (Standards for Specific Uses) of this title..

Table 18.40.030 Office and Commercial Districts Development Standards (1)

Standards CO (4) CMX (4) NC (4)(6) RC SC Additional Standards
Density (du/net acre) minimum/maximum 11 – 40 11 – 40 24 max** NA NA **Residential uses not allowed on ground floor .
Floor Area Ratio (FAR) (maximum) 1.0 1.0 0.35 0.5 0.8
Lot Area (square feet) minimum 10,000 10,000 10,000 80,000* 10,000 *Smaller lots may be approved with a use permit
Lot Width (feet) minimum 100 100 100 100 100 Reduced dimensions may be allowed subject to use permit approval
Lot Depth (feet) minimum 100 100 100 200 100 Reduced dimensions may be allowed subject to use permit approval
Building Height (feet) maximum (3) Building Height (feet) maximum (3) Building Height (feet) maximum (3) Building Height (feet) maximum (3) Building Height (feet) maximum (3) Building Height (feet) maximum (3) Building Height (feet) maximum (3)
Residential and Mixed-Use (5) 37 37 40 NA NA Additional height may be allowed with a use permit
Nonresidential 30 30 40 50 35 Additional height may be allowed with a use permit
Setbacks (feet) minimum (1, 2) Setbacks (feet) minimum (1, 2) Setbacks (feet) minimum (1, 2) Setbacks (feet) minimum (1, 2) Setbacks (feet) minimum (1, 2) Setbacks (feet) minimum (1, 2) Setbacks (feet) minimum (1, 2)
Front 10 5 5 15 15 Reduced setbacks may be allowed subject to use permit approval
Corner Side 10 10 10 10 10 Reduced setbacks may be allowed subject to use permit approval
Interior Side, Rear 5 None required unless adjacent to an R district or residential use in CMX. See CDC 18.150.180 (Transitional requirements) for buildings up to 30 feet in height . None required unless adjacent to an R district or residential use in CMX. See CDC 18.150.180 (Transitional requirements) for buildings up to 30 feet in height . None required unless adjacent to an R district or residential use in CMX. See CDC 18.150.180 (Transitional requirements) for buildings up to 30 feet in height . None required unless adjacent to an R district or residential use in CMX. See CDC 18.150.180 (Transitional requirements) for buildings up to 30 feet in height . None required unless adjacent to an R district or residential use in CMX. See CDC 18.150.180 (Transitional requirements) for buildings up to 30 feet in height .
Open Space/Unit (square feet) minimum See CDC 18.150.100 , Open space and recreational facilities for residential developments , and Chapter 18.155 CDC, Standards for Small Lot and Medium Density Development See CDC 18.150.100 , Open space and recreational facilities for residential developments , and Chapter 18.155 CDC, Standards for Small Lot and Medium Density Development See CDC 18.150.100 , Open space and recreational facilities for residential developments , and Chapter 18.155 CDC, Standards for Small Lot and Medium Density Development See CDC 18.150.100 , Open space and recreational facilities for residential developments , and Chapter 18.155 CDC, Standards for Small Lot and Medium Density Development See CDC 18.150.100 , Open space and recreational facilities for residential developments , and Chapter 18.155 CDC, Standards for Small Lot and Medium Density Development See CDC 18.150.100 , Open space and recreational facilities for residential developments , and Chapter 18.155 CDC, Standards for Small Lot and Medium Density Development

(1) Additional requirements may apply pursuant to Chapter 18.155 CDC (Standards for Small Lot and Medium Density Development) and Division V of this title (Standards for Specific Uses). Lot area, width, depth and setback limits listed here may not apply if a site in CO, CMX, or NC is subdivided into multifamily fee simple/condominium units or small residential lots.

(2) Measured from property line to the face of building or to a structure.

(3) Consistent with transitional requirements (See CDC 18.150.180).

(4) Standard does not apply to small, independent parcels corresponding to individual dwellings within a larger multifamily residential, mixed-use, or townhome development.

(5) Mixed-use projects shall meet the definition of a “housing development project” in California Government Code Section 65589.5(h) to qualify for the residential and mixed-use height standard: all other mixed-use projects shall be subject to the nonresidential height standard.

(6) Additional requirements may apply pursuant to Chapter 18.120 CDC (Affirmatively Furthering Fair Housing Overlay District).

[Ord. 26-425.1 § 10 (Exh. D); Ord. 26-1 § 8 (Exh. B); Ord. 12-5; Ord. 12-4. DC 2012 § 122-132].

Exceptions & meaning →

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