Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. EPA in the Pacific Islands

CWA-09-2020-0015: Hawaiian Rock Products Corporation, Mangilao, Guam

Related Content

Learn More: Water Enforcement

Proposed administrative penalty settlement with Hawaiian Rock Products Corporation for violations of the Clean Water Act (CWA) at its Ready-Mix Concrete #5 facility located in Santa Rita, Guam.

Complainant: Elizabeth Berg, Acting Assistant Director, Enforcement and Compliance Assurance Division, U.S. EPA, Region 9, 75 Hawthorne Street, San Francisco, California 94105.
Respondent: Hawaiian Rock Products Corporation, 1402 Route 15, Mangilao, Guam 96913
Description of Business or Activity Conducted by the Respondent: Concrete Production
Summary of Alleged Violations: Respondent is engaged in concrete production which is a regulated industrial activity under the Clean Water Act. The Respondent had obtained Clean Water Act NPDES permit authorization for discharges of stormwater from its Facility.
Proposed Penalty: $10,000
Applicant or Respondent: Hawaiian Rock Products Corporation 1402 Route 15, Mangilao, Guam 96913

Free viewers and readers are available to access documents on our website. If you encounter issues with assistive technology, please contact us.

  • Proposed Expedited Settlement Agreement (ESA): Hawaiian Rock Products Corporation, Mangilao, Guam (pdf) (151.99 KB, June 25, 2020)
    Proposed administrative penalty settlement with Hawaiian Rock Products Corporation (Respondent) for violations of the Clean Water Act (CWA) at its Ready-Mix Concrete #5 facility located in Santa Rita, Guam. Docket Number CWA-09-2020-0015.

EPA in the Pacific Islands

  • Remedial Action Plan, Marpi Point, Saipan
  • Johnston Atoll
  • Geospatial Data Input
  • Typhoon Mawar
Contact Us About EPA in the Pacific Islands
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 24, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.