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  2. NPDES Permits Around the Nation

GUS040001: Guam Department of Public Works MS4, Tamuning, Guam

Return to: Guam NPDES Permits

Discharger Name: Guam Department of Public Works
Discharger Address: Department of Public Works (DPW), 542 N. Marine Corps Drive, Tamuning, Guam 96913
Facility Name: Municipal Separate Storm Sewer System (MS4)
Facility Location Address: DPW MS4 on the Island of Guam
Facility Rating: Minor
This permit was issued on: December 20, 2018
This permit shall become effective on: February 1, 2019
The permit modification shall become effective on: February 1, 2022
This permit shall expire at midnight on: January 31, 2024

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  • NPDES Permit Modification: Guam Department of Public Works MS4 (pdf) (1.34 MB, January 28, 2022)
    Authorization to Discharge Under [MODIFIED] National Pollutant Discharge Elimination System (NPDES) Permit No. GUS040001 for Guam Department of Public Works Municipal Separate Storm Sewer System (MS4).
  • NPDES Permit Modification Fact Sheet: Guam Department of Public Works MS4 (pdf) (2.76 MB, January 18, 2022)
    EPA Fact Sheet for final modification of National Pollutant Discharge Elimination System (NPDES) Permit No. GUS040001 for the Guam Department of Public Works Municipal Separate Storm Sewer System (MS4).
  • NPDES Permit No. GUS040001: Guam Department of Public Works Municipal Separate Storm Sewer System (MS4) (pdf) (1.68 MB, 12/20/2018)
    Authorization to Discharge Under National Pollutant Discharge Elimination System (NPDES) Permit No. GUS040001 for Guam Department of Public Works Municipal Separate Storm Sewer System (MS4).
  • Addendum to NPDES Permit Fact Sheet: Guam Department of Public Works Municipal Separate Storm Sewer System (pdf) (2.14 MB, 12/19/2018)
    EPA Fact Sheet for National Pollutant Discharge Elimination System (NPDES) Permit No. GUS040001 for the Guam Department of Public Works Municipal Separate Storm Sewer System.
  • Response to Comments: Guam Department of Public Works (DPW) Municipal Separate Storm Sewer System (MS4) (pdf) (410.29 KB, 06/08/2017)
    Response to Public Comments on the Issuance of National Pollutant Discharge Elimination System (NPDES) Permit No. GUR040001 for Discharges from the Municipal Separate Storm Sewer System (MS4) Operated by the Guam Department of Public Works.
  • Response to Supplemental Comments: Guam Department of Public Works (DPW) Municipal Separate Storm Sewer System (MS4) (pdf) (302.4 KB, 06/18/2018)
    Response to Supplemental Comments on the Issuance of National Pollutant Discharge Elimination System (NPDES) Permit No. GUR040001 for Discharges from the Municipal Separate Storm Sewer System (MS4) Operated by the Guam Department of Public Works (DPW).
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Last updated on March 24, 2025
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