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About Kellco
KELLCO provides a full spectrum of environmental and engineering services from preliminary investigation to final design and construction oversight. This profile covers Kellco, a company classified under Environmental Consulting Services, based in Hayward, California, United States, employing 6-10 people and reporting $1M-$5M in annual revenue.
Its primary NAICS classification is 541620 (Environmental Consulting Services). Kellco is one of 7,660,543 companies listed in California.
Business Contact Information
- Phone
- +1 (510) 7869751
- Fax
- +XXX (510) 7869625
- Website
- kellco.com
- Address
- 3137 Diablo Ave, Hayward, California, 94545, United States
Industry & Classification
NAICS Codes
- 54Professional, Scientific, and Technical Services
- 5416Management, Scientific, and Technical Consulting Services
- 541620Environmental Consulting Services
SIC Codes
- 89Miscellaneous Services
- 899Miscellaneous Services
- 8999Environmental Consulting Services
Company Details
- Employees
- 8 (6-10)
- Annual Revenue
- $2.0M ($1M-$5M)
Kellco: frequently asked questions
What does Kellco do?
KELLCO provides a full spectrum of environmental and engineering services from preliminary investigation to final design and construction oversight.
Where is Kellco located?
Kellco is headquartered at 3137 Diablo Ave, Hayward, California, 94545, United States.
How many employees does Kellco have?
Kellco has about 8 employees (the 6-10 range).
What is Kellco's annual revenue?
Kellco's annual revenue is estimated at $2.0M (the $1M-$5M range).
What industry is Kellco in?
Kellco's primary NAICS code is 541620 (Environmental Consulting Services).
How can I contact Kellco?
Its website is kellco.com and its phone number is +1 (510) 7869751.
Largest companies in California
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Manufacturing sales in California, 2026
In California, Factur's 2026 study counted 98 manufacturing quotes worth $14.7M and 18 purchase orders over 12 months: 18% of quotes became orders, against 21% nationally. See the California data.
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