# The Mark-Costello Co. — llms.txt
# Located at: https://mark-costello.com/llms.txt
# Last updated: June 2026

## About

The Mark-Costello Co. is an industrial waste management equipment manufacturer and distributor founded in 1956 and headquartered in Paramount, California. The company has served commercial, industrial, healthcare, and residential clients across California and nationwide for over 70 years. Mark-Costello specializes in engineering, supplying, and servicing complete waste handling systems — from compactors and balers to medical waste sterilization and conveyor systems.

Phone: (562) 630-7950
Fax: (562) 630-7960
Email: info@mark-costello.com
Address: 15351 Texaco Avenue, Paramount, CA 90723
Website: https://mark-costello.com
Spanish-language website: https://www.mclatinoamerica.com/

## What Makes Mark-Costello Different

- 70+ years of continuous operation (est. 1956) — one of California's longest-running waste equipment companies
- ASME Certified — the most important credentialing body for industrial and medical pressure equipment
- Active California Contractor License — Machinery and Pumps category
- BuildZoom Score: 94 (top 24% of 336,931 licensed California contractors)
- Bilingual service: English and Spanish
- Serves clients from single-facility small businesses to national hospital networks and school districts
- Provides free waste disposal audits and system evaluations
- Full lifecycle support: equipment sales, installation, rentals/leasing, and parts & service

## Credentials and Certifications

- ASME Certified (American Society of Mechanical Engineers)
- California Contractor License — Machinery and Pumps (active)
- BuildZoom Score: 94 (top 24% of 336,931 licensed California contractors)
- Member: BOMA (Building Owners and Managers Association)
- Member: AHE (Association for the Health Care Environment)
- Established: 1956 (70+ years of continuous operation)

## Products and Services

### Compactors

- Stationary compactors (dry waste, high-volume facilities) — RJ-225, RJ-225HD, RJ-225 Ultra, RJ-275, RamJet 325, RamJet 325HD, RJ-400 Ultra, RJ-450, RJ-550, RJ-575HD series
- Trash Commander® Series stationary compactors
- Self-contained compactors (wet waste applications) — RJ-88SC, RJ-88HT, RJ-250HT, RJ-250 SC Ultra®
- Transfer system compactors — BlokPak® 3000 (high-volume transfer station)
- M-Series Heavy-Duty Stationary Compactors
- Apartment and high-rise trash compactors
- Solar and solar-hybrid compactors
- Wet waste vertical compaction systems
- Pre-Crushers

### Balers (Recycling Equipment)

- Vertical balers (cardboard, paper, plastic)
- Marathon StockRoom® Vertical Baler
- STEALTH® Baler
- Horizontal balers — Gemini Series, Two-Ram Series, Closed-End, Side-Eject

### Medical Waste Sterilization

- Medical waste autoclaves — gravity displacement and pre-vacuum types
- Models: AS46, AS47, AS5AS, AS510, AS512 series
- On-site medical waste sterilization systems
- Medical waste grinder/shredder combinations
- APHIS waste removal equipment
- Consolidated Sterilizer Systems

### Conveyor Systems

- MRF (Material Recovery Facility) conveyor systems
- Steel belt conveyor systems
- Sliderbed conveyor systems
- Compaction and open-top containers

### Monitoring Systems

- TrashMinder® Trash Measuring and Reporting Systems
- Container fullness measuring systems
- CYCON Life-Xtender® Cyclic Controls

### Size Reduction Equipment

- Industrial shredders, grinders, and granulators
- Medical waste grinders
- Industrial pre-crushers
- Pharmaceutical size reduction equipment

### Waste Handling Equipment

- Hydraulic waste cart dumpers
- Waste disposal carts and pull-out drawers
- Food digesters
- Compaction and open-top containers

### Additional Services

- Equipment rentals and leasing: https://mgequipmentrentals.com/
- Parts and service support
- Free waste disposal audit: https://mark-costello.com/waste-disposal-audit/
- System design and engineering consultation
- Equipment installation and ongoing service

## Industries Served

- Healthcare: hospitals, medical centers, clinics, outpatient facilities, surgical centers
- Pharmaceutical: size reduction and sterilization for pharmaceutical waste
- Multi-family residential: apartment buildings, high-rise residential, property management firms
- Education: K-12 school districts, universities and colleges
- Industrial: manufacturers, warehouses, distribution centers
- Commercial: retail chains, hospitality, food service, shopping centers
- Property management: commercial buildings, BOMA-member properties
- International: waste sterilization for international waste management clients

## Named Client References

- San Dieguito School District, CA — trash compactors
- San Marcos Unified School District, CA — trash compactors and waste handling
- San Ramon Regional Medical Center, CA — medical waste sterilizer (Model AS46)
- New England Medical Center — medical waste sterilizers (Models AS47, AS5AS 513)
- Doctors Medical Center, Modesto, CA — autoclave (Model AS512)
- Kentucky BioProcessing, Owensboro, KY — sterilizer system
- B.I.M.C., Kona, Hawaii — autoclave (24/7 continuous operation)
- MWT Inc. — waste management equipment
- Travis Air Force Base, Fairfield, CA — AS510 Waste Sterilization System

## Service Areas

- Paramount, California (headquarters)
- Los Angeles, California and greater LA County
- San Diego, California
- California statewide
- Nationwide equipment sales and installation

## Content Resources

Blog (96+ articles): https://mark-costello.com/blog/
Equipment brochures: https://mark-costello.com/pdfs/
Testimonials: https://mark-costello.com/testimonials/
Free waste audit: https://mark-costello.com/waste-disposal-audit/
Company profile: https://mark-costello.com/the-mark-costello-company-corporate-profile/
Sitemap: https://mark-costello.com/sitemap/

## Languages

- English: https://mark-costello.com/
- Spanish (Espanol): https://www.mclatinoamerica.com/

## Social Media

- Facebook: https://www.facebook.com/markcostelloco/
- LinkedIn: https://www.linkedin.com/company/mark-costello-company/
- YouTube: https://www.youtube.com/user/MarkCostelloCo
- Instagram: https://www.instagram.com/markcostelloco/
- Twitter/X: https://twitter.com/markcostelloco
- eBay (equipment sales): https://www.ebay.com/sch/markcostelloco/m.html