April 5, 2026
EARTHTEK Earns Diamond Certified®
Scores Highest in Quality and Helpful Expertise in Customer Satisfaction Study
EARTHTEK, a commercial paving, grading, and site preparation company in Alameda County, has been awarded the prestigious Diamond Certified for the 24th consecutive year after being rated Highest in Quality and Helpful Expertise in ongoing customer satisfaction ratings performed by American Ratings Corporation (ARC).
In order to earn Diamond Certified, a local service company must apply to be rated by ARC and pass each step of its 12-step certification process. ARC actually pulls a random sample of past customers from the applicant company's files and surveys typically 100 customers by telephone. Not only do the customers rate the applicant company on a 1 to 10 scale for quality, but they also indicate their willingness to return or refer other consumers to the company. Most companies can't pass the rating because a customer satisfaction survey score of greater than 90 on a 100 scale is required.
ARC also verifies liability and workers' compensation insurance, state license status, complaint status, business practices, financial stability, and legal judgment status. Additionally, ongoing customer satisfaction surveys are conducted to ensure the Diamond Certified Company is maintaining its high customer satisfaction.
"Our entire team at EARTHTEK is pleased to earn this prestigious award," says Owner Vic Ramirez. "It's especially gratifying because it's based on our customers' perception of our quality."
"Personally, I've been focused on rating local service companies for the past 20-plus years and I'm always impressed by how certain organizations are so focused on satisfying their customers," says Jim Stein, Founder of ARC. "EARTHTEK is one of those special companies."
About American Ratings Corporation
American Ratings Corporation (ARC), the creator of Diamond Certified Resource, the source for consumers who love quality local companies, rates local companies by surveying only their verified real customers to produce the country's most accurate ratings of local companies. It also creates deeply researched company reports and consumer guides that give consumers the best companies plus the best advice for choosing a local Auto, Home, Health or Personal service type of company.
Only companies rated Highest in Quality and Helpful Expertise® earn Diamond Certified and are backed by their Performance Guarantee. All their deeply researched reports and guides are available for free at diamondcertified.org. They also produce an annual, full-color, printed Diamond Certified Directory with 840,000 copies published in 9 geographic zones in the Greater San Francisco Bay Area. Each April, these are mailed for free to their 182,000 Diamond Certified Preferred Members and selected homeowners and companies.
Contacts:
- Vic Ramirez, Business Owner — EARTHTEK — (408) 478-9761
- Jim Stein, Founder & CEO — American Ratings Corporation — (800) 738-1138 — jimstein@diamondcertified.org
