Addendum No. 1 - FS 227 33 0110.58 Disinfection of Water Utility Piping Systems Enclosure 44.pdf
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- Attached to
- 1202 - County Fire Station 227 New Build
- Solicitation number
- ANE223-ANE2C-6144
- Issued by
- San Bernardino County, California
About this file
This is an Addendum No. 1 to the specifications for Fire Station 227 (Project FS 227 33 0110.58), issued by STK Architecture, Inc. in August 2025. The document outlines the disinfection of water utility piping systems for both domestic water lines and fire water lines as specified in Section 33 1416. The scope of work requires a qualified water treatment firm with a minimum of three years documented experience in disinfecting potable water systems, and a certified testing firm approved by the governing state authorities. The work involves disinfecting site water utility distribution piping using approved methods and chemicals in accordance with SBMWD Standard Specifications and Drawings or AWWA C651 standards.
The disinfection process requires verification that all piping systems and water wells have been cleaned, inspected, and pressure tested prior to work commencement. The contractor must inject treatment disinfectant chemicals (including AWWA B300 Hypochlorite, AWWA B301 Liquid Chlorine, AWWA B302 Ammonium Sulfate, or AWWA B303 Sodium Chlorite) into the system, maintain the disinfectant for 24 hours, and then flush and circulate the system until required cleanliness standards are achieved using municipal domestic water. All permanent system devices removed during the disinfection process must be replaced upon completion. The work must be coordinated with system start-up, testing, adjustment, balancing, and demonstration procedures.
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Text version
STK Architecture, Inc. August 2025
SBC Fire Station 227 33 0110.58-1 Disinfection of Water Utility Piping Systems
SECTION 33 0110.58
DISINFECTION OF WATER UTILITY PIPING SYSTEMS
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Disinfection of site domestic water lines and site fire water lines specified in Section 33 1416.
1.02 RELATED REQUIREMENTS
A. Section 33 1416 - Site Water Utility Distribution Piping.
1.03 REFERENCE STANDARDS
A. AWWA B300 - Hypochlorites; 2010, Addendum 2011.
B. AWWA B301 - Liquid Chlorine; 2010.
C. AWWA B302 - Ammonium Sulfate; 2016.
D. AWWA B303 - Sodium Chlorite; 2010.
E. AWWA C651 - Disinfecting Water Mains; 2014.
1.04 QUALITY ASSURANCE
A. Water Treatment Firm: Company specializing in disinfecting potable water systems specified in this Section with minimum three years documented experience.
B. Testing Firm: Company specializing in testing potable water systems, certified by governing authorities of the State in which the Project is located.
PART 2 PRODUCTS
2.01 DISINFECTION CHEMICALS
A. Chemicals: AWWA B300 Hypochlorite, AWWA B301 Liquid Chlorine, AWWA B302 Ammonium Sulfate, and AWWA B303 Sodium Chlorite.
PART 3 EXECUTION
3.01 EXAMINATION
A. Verify that piping system and water well has been cleaned, inspected , and pressure tested.
B. Schedule disinfecting activity to coordinate with start-up, testing, adjusting and balancing, demonstration procedures, including related systems.
3.02 DISINFECTION
A. Use method prescribed by the SBMWD Standard Specifications and Drawings for Construction of Domestic Water Systems, or in the absence of any of these follow AWWA C651.
B. Provide and attach equipment required to perform the work.
C. Inject treatment disinfectant into piping system.
D. Maintain disinfectant in system for 24 hours.
E. Flush, circulate, and clean until required cleanliness is achieved; use municipal domestic water.
F. Replace permanent system devices removed for disinfection.
END OF SECTION
Enclosure #44 Fire Station #227 11/17/25
| PART 1 GENERAL |
| 1.01 SECTION INCLUDES |
| A. Disinfection of site domestic water lines and site fire water lines specified in Section 33 1416. |
| 1.02 RELATED REQUIREMENTS |
| A. Section 33 1416 - Site Water Utility Distribution Piping. |
| 1.03 REFERENCE STANDARDS |
| A. AWWA B300 - Hypochlorites; 2010, Addendum 2011. |
| B. AWWA B301 - Liquid Chlorine; 2010. |
| C. AWWA B302 - Ammonium Sulfate; 2016. |
| D. AWWA B303 - Sodium Chlorite; 2010. |
| E. AWWA C651 - Disinfecting Water Mains; 2014. |
| 1.04 QUALITY ASSURANCE |
| A. Water Treatment Firm: Company specializing in disinfecting potable water systems specified in this Section with minimum three years documented experience. |
| B. Testing Firm: Company specializing in testing potable water systems, certified by governing authorities of the State in which the Project is located. |
| PART 2 PRODUCTS |
| 2.01 DISINFECTION CHEMICALS |
| A. Chemicals: AWWA B300 Hypochlorite, AWWA B301 Liquid Chlorine, AWWA B302 Ammonium Sulfate, and AWWA B303 Sodium Chlorite. |
| PART 3 EXECUTION |
| 3.01 EXAMINATION |
| A. Verify that piping system and water well has been cleaned, inspected , and pressure tested. |
| B. Schedule disinfecting activity to coordinate with start-up, testing, adjusting and balancing, demonstration procedures, including related systems. |
| 3.02 DISINFECTION |
| A. Use method prescribed by the SBMWD Standard Specifications and Drawings for Construction of Domestic Water Systems, or in the absence of any of these follow AWWA C651. |
| B. Provide and attach equipment required to perform the work. |
| C. Inject treatment disinfectant into piping system. |
| D. Maintain disinfectant in system for 24 hours. |
| E. Flush, circulate, and clean until required cleanliness is achieved; use municipal domestic water. |
| F. Replace permanent system devices removed for disinfection. |
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