Storm Water Pollution Prevention

 
Treated Storm water meets Industrial General Permit requirements

Treated Storm water meets Industrial General Permit requirements

CATEGORY OF SERVICE, LOCATION:

Storm Water Monitoring and Treatment System Operation, Santa Cruz, California

TYPE OF CLIENT:

Concrete Plant

BACKGROUND:

The client required assistance improving and implementing storm water treatment, monitoring, and documentation per State Water Resources Control Board, Storm Water Program requirements. The client needed improved monitoring, treatment, and tracking to meet regulatory compliance. Specialized consulting services were required to support company staff with implementation and compliance of more stringent storm water discharge requirements.

CLIENT GOALS FOR PROJECT:

Support specialized design and construction of automated storm water treatment equipment, monitor effectiveness of storm water treatment system, and support staff compliance with storm water related regulations. Implementation of an improved Storm Water Pollution and Prevention Plan.

PROJECT APPROACH:

  • Coordinated with client staff, storm water engineers, and specialized consultants during design of the storm water treatment system.
  • Assistance updating and improving the Storm Water Pollution and Prevention Plan (SWPPP) based on more stringent permit requirements.
  • Perform field and bench tests of storm water treatment approaches to determine the optimal treatment approach.
  • Support and oversight of client staff and construction sub-contractors in implementation of engineered design of the storm water treatment system.
  • Continued monitoring of effectiveness, reliability, and performance of the storm water treatment system.
  • Regular sampling and monitoring of storm water and storm water treatment system per permit requirements by the State Water Resources Control Board, Storm Water Program.

RESULTS, RESOLUTION, NEXT STEPS:

  • Following detailed monitoring by Trinity the client successfully met all requirements of the enhanced storm water monitoring permit criteria by implementing an enhanced Storm Water Pollution and Prevention Plan (SWPPP).
  • Supported implementation of storm water treatment equipment.
  • Continued support overseeing storm water monitoring and sampling requirements.
  • Gradual transition to client staff operated and monitored treatment systems to reduce cost and improve client work-flow.

 

CATEGORY OF SERVICE, LOCATION:

Industrial Storm Water Pollution Prevention Plan (SWPPP)

TYPE OF CLIENT:

Industrial - Shock Absorber Manufacturing
Scotts Valley, California

BACKGROUND:

A manufacturing company requested assistance with the State Water Resources Control Board’s (SWRCB’s) National Pollutant Discharge Elimination System (NPEDS) General Permit for Storm Water Discharges associated with industrial activities. The Santa Cruz County Environmental Health Services Agency (SCCEHSA) requested that the client implement a plan to prevent potential contaminants from an outdoor above ground storage tank (AST) and a hydraulic pump from entering nearby storm drains during dry and wet (storm) events.
Because the AST and hydraulic pump were outside and not covered the client could not apply for the no exposure certification (NEC) coverage under the general permit.

CLIENT GOALS FOR PROJECT:

To address the SCCEHSA’s request by implementing a plan to protect two storm drains at the Site from possible leaks/spills related to an outdoor AST and hydraulic pump.

PROJECT APPROACH:

  • Trinity designed a pollution prevention plan to address possible spills/leaks related to the outdoor AST and hydraulic pump during dry and wet weather.
  • The SWPPP included contact information in case of a spill or release, the responsible party, a storm water pollution prevention team, potential pollutant sources, and how to address spills and leaks during an emergency.
  • Trinity developed best management practices which included good housekeeping, drain inlet protection during dry and wet events with a high strength impermeable drain seal, inspection protocols during rain and non-rain events to ensure the drain is protected, and a 95-gallon spill kit for the potential contaminants of concern.
  • The SWPPP also included procedures for daily and weekly inspections during rain and non-rain events, and record keeping to comply with the industrial General Permit.
  • A Qualified Storm Water Developer (QSD) and Qualified Industrial Storm Water Practitioner (QISP) from Trinity initially trained the SWPPP team at the manufacturing facility on the AST and hydraulic pump SWPPP.
  • Trinity designed the SWPPP so that the SWPPP team managers can conduct the recurrent annual training in-house.

RESULTS, RESOLUTION, NEXT STEPS:

  • The SCCEHSA approved of the SWPPP with no comments and agreed the SWPPP adequately protected the contaminants from entering the storm drains during rain and non-rain events.
  • The client is currently implementing the SWPPP.