BPA ABERDEEN SUBSTATION stormwater system upgrade


Project Overview

Install a new stormwater treatment system and upgrade the existing containment system by installing a new set of stormwater treatment vaults to treat and store oil in the event of a spill. The new vaults consist of a new 816 API style oil water separator and a new 816 coalescing plate separator. In addition, the old liners will be retired, and new liners will be installed around the bank 4 transformer and the bank 5 transformer..

Key Components

  • Approximately 5274 square feet of XR-5 8130 geomembrane liner 
  • Approximately 1,200 square yards of 12 oz. non-woven geotextile under and over liner 
  • Approximately 300 Lineal feet of SS batten (including rubber gasket, Conseal 440 ½” x 2”, sikaflex and all SS lags and hardware).  The drawings show approximately 288-feet however Tricter Rig is considering the likelihood of installing batten to the north face of  6 footings on the south side of the containments. 
  • 4 - 6” (4”) x 8’ x 21.4’ geo-cell panel perforated (6” and 4” geo-cell may be installed as needed to support areas in containment accessible to vehicles) 
  • 2-Liner boots A few small concrete pads will be installed to attach batten around conduit at each transformer pad. Each Transformer pad also has a bank of conduits that will require a concrete block out.

Project Scope

The scope of work for this project included the installation of a secondary oil containment liner around the 230 kV Power Transformers. We removed an existing containment liner and disposed of the materials and contents. The previous excavation was re-contoured to accommodate the new containment system. The liner consisted of a graded and compacted subgrade around the transformer, lined with an XR-5 liner sheathed by one layer of geotextile fabric on each side. Tricter Rig performed all aspects of the liner installation including excavation, subgrade preparation, batten installation, quality control and backfill of containment. To expedite project schedule a technician with Northwest Linings was utilized to assist with seaming and detail work. The subgrade elevation for each of the three treatment vaults was approximately 1-foot below sea level. Tricter Rig set up a pumping/dewatering system to control groundwater influence. The slide rail shoring was installed, vaults were set, excavation was backfilled and slide rail was removed within one week. To complete the project a new outfall was installed near the new treatment vaults and the site was restored.

Technical Experience

Tricter Rig’s technical expertise is significant regarding liner installation and sub grade preparation.  Our Project Manager has accumulated project experience on over 1-million square feet of geo-synthetics.  Our field crew has performed several liner containment projects and self-performed installation on several projects.  This experience includes sub-grade preparation, liner installation, batten installation, quality assurance/ quality control procedures and reporting.

Quality Control

Tricter Rig oversaw and performed field Quality Control testing.  Our Project Manager (Liner Lead) coordinated the QC procedures in the field.  Our Liner Lead was also on hand to perform seaming and fabrication duties.  This final asset reduced the overall project time and time required for liner installation.  Having our Liner Lead on-site and prepared to weld and install the liner also reduced the risk of excessive costs due to scheduling conflicts, weather delays and or equipment failure.


Aberdeen, Washington



Project Overview

Install a new stormwater treatment system and upgrade the facilities existing operating system while preserving the efficiency of the day to day business operations.

Key Components

  • Performed Heavy Earthwork moving approximately 4,000 CY of earth
  • Graded and prepped for paving 71,000 SF of subgrade
  • 235 LF of Ultra Block Retaining Wall was excavated for and installed including drainage and backfill
  • Approximately 33,000 SF of Concrete Treated Base (CTB)

Work Plan / Schedule

Tricter Rig’s overall approach to site management was the effective use of scheduling personnel and setting up work areas to accommodate facility operations while meeting project milestones.  

On a regular basis Tricter Rig works with customers who must execute a project and continue to dedicate all or a large portion of their site to keeping the existing operations functioning.  These sites include electrical substations, metal recycling facilities, trucking distribution centers, fuel stations and commercial facilities.   

Our general strategy is to first understand the needs of the facility such as peak hours of operation, required processing areas and required staging areas.  This knowledge provides us the opportunity to tailor a scheduled management plan that best suites goals of the project and the facility.  Some of the strategies we used were to prepare as many aspects of a task as possible before moving into a critical area, such as staging the proper materials for the task close by and scheduling the work to be performed during off hours or away from peak hours.

Erosion Control / Site Restoration

Bob's Metals is a highly visable site from several angles including City inspectors, the general public and Regulators as well as the close proximety to the Columbia Slough.  Tricter Rig treated all appearances of the site as a high priority daily.  Erosion control methods were inspected and maintained daily and after each rain event., as well as general housekeeping, including construction debris.


Portland, Oregon



Project Overview

Upgrade the stormwater treatment and containment system

Key Components

  • Mass grading and haul off of 9,000 tons of clean soil
  • Installation of 2 storm water infiltration basins approximately 95,000 Sq Ft
  • Installation of approximately 5,000 tons of bioretention media
  • Installation of 5 stormwater man holes
  • Approximately 1300 LF stormwater conveyance piping
  • Utilized Shoring Boxes for Man Hole and Conveyance Piping Installation
  • Reroute approximately 200 LF of 12” HDPE Fire Line and 3” HDPE Water line

Project Specifics

  • Erosion & Sediment Control
  • Stormwater Pollution Prevention Plan
  • Installation of (1) new 5:1 side slope infiltration basin
  • Asphalt cutting/repair and rerouting of storm sewer piping
  • Relocate 10" fire water pipe & 3" HDPE Schedule 80 potable water line
  • Installation of (1) 3:1 side slope infilitration basin
  • Removal & dispoal of existing containment pond, switchyard rock, and piping
  • Restore existing access landing
  • Install new outfall marker & mechanical attachment to the opening of the outfall pipe to prevent animals entrance to the drainage system
  • Abatement of existing hazardous materials on-site


Based on direct observations and field quality control practices this project was completed in substantial conformance to the project specifications, project work plan and industry standards.  


Covington, Washington



Project Overview

Design and construct a pipeline that discharges treated leachate generated at the CERCLA landfill into the City of the Dalles sanitary sewer collection and treatment system.

Key Components

  • Approximately 863 LF 2” HDPE pump line pipine
  • Installation of 2 cleanout vaults
  • Approximately 1200 LF 8” sewer main piping (85% excavated through bed rock)
  • Installation of 8 sewer man holes
  • Conduct all testing and camera work for sewer line and man holes
  • Utilized Shoring Boxes for Man Hole and Conveyance Piping Installation that wasn’t in solid rock
  • Excavate around multiple utilities
  • Contaminated soil excavated from within Lockheed property stockpiled on and covered with plastic, tested and hauled to approved landfill approximately 800 tons
  • Prepared and paved all trench in roadway approximately 4000 Sq Ft

Erosion Control

Tricter Rig utilized all necessary BMP's to eliminate sediment run-off and control erosion.  Straw wattles were used at ditch inlets during excavation and a silt fence was utilized around the construction perimeter to contain potential sediement runoff and prevent erosion


Tricter Rig has managed and executed several projects of this nature, including a wide variety of projects for federal customers, AECOM and a variety of industries working closely with consulting and design teams. Our management team understand environmental and construction specifications on a detailed level.


The Dalles, Oregon



Project Overview

Install a vehicle wash rack system at the BPA Alvey Maintenance Facility.  Including designing and installing a free standing canopy, concrete pad, equipment room and all associated structural components.

Key Components

  • Demolish and dispose of existing asphalt as needed for new canopy footprint.
  • Installation of 2 - API style 612 SA 3,000 gallon oil/water separators. 
  • Design and Installation of a 32’ x 66’ x 8” concrete wash pad, 20’ x 2’ x 2’ concrete trench drain and a 16’ x 16’ x 4” concrete equipment room pad.  
  • Installation of a 16’ x 16’ x 14’ CMU block wall building that houses the wash rack equipment. 
  • Design and Installation of a steel canopy over the newly built wash rack pad. 
  • Installation of an electrical system, including various 230 and 120 volt conduit runs. 
  • Installation a 60mil Thermoplastic PolyOlefin roof on top of the CMU equipment room.
  • Installation of an industrial exhaust fan, asphalt patch, hot tap and water main, 25gpm water blaster, undercarriage spray system, space heater, 1.5” wash down pump, ozone generator, various lighting, heated pressure washing system, complicated drain system, catch basins and redundant piping.  
  • Complete triple coat epoxy painting of all structures. 
  • Surrounding drive lane refurbishment


Eugene, Oregon



Project Description

This project was comprised of storm, sewer, water, gas, building footings and parkinglot upgrades.

Key Components

  • Rough grade site approximately 98,000 Sq. Ft 
  • Approximately 1100 LF stormwater conveyance piping 
  • Installation of 7 stormwater man holes 
  • Approximately 475 LF sewer conveyance piping 
  • Installation of 1 sewer man hole 
  • Utilized Shoring Boxes for Man Holes and Conveyance Piping Installation 
  • Utilized excavated soil to fill building pad and site 
  • Excavated for and installed conduit and sleeves for site utilities and landscaping approximately 730’ 
  • Excavate for and install PGE vault 
  • Approximately 215 LF of Ductile Iron fire line  
  • Graded and concrete amended approximately 21,000 Sq. Ft of parking area 
  • Excavate for and backfill all building footings and loading dock 
  • Fine grade building pad and loading dock for concrete approximately 22,000 Sq Ft 
  • Fine grade for all asphalt approximately 60,300 Sq. Ft

Portland, Oregon



Closed Loop Equipment Wash Rack

Construct a large industrial truck wash rack at the BPA Chemawa Substation Facility.  The equipment wash rack is a recirculated system with zero discharge.  Tricter Rig performed as the General Contractor while also self performing a great deal of the system installation, including all excavation and site grading, installation of all underground structures, system piping and portions of the electro-coagulation treatement system.

Key Components

  • Demolish & dispose of existing wash rack paid, 2'x4' vault & associated equipment
  • Installation of (2) API style 612 SA 3,000 gallon oil/water separators
  • Installation of 28'x55'x8" concrete wash pad, 20'x2'x2' concrete trench drain & a 14'x20'x8' concrete pad
  • Installation of 14'x20'x13' CMU block wall building that houses the wash rack equipment
  • Installation of 40'x70' galvanized steel canopy over the newly built wash rack pad
  • Installation of electrical system, including various 480, 230 & 120 volt conduit runs
  • Installation of a 60mil thermoplastic polyolefin roof on top of the CMU equipment room
  • Installation of a flocculating electro-coagulating water treatment system, industrial exhaulst fan, space heater, 1.5" wash down pump, ozone generator, various lighting, heated pressure system, complicated drain system & redundant piping
  • Complete double coat painting of all structures
  • Surrounding drive lane refurbishment


Tricter Rig provided a turnkey installation of a new generation wash rack system.  This project was costructed from the ground up.  Although a few schedule hindrances became evident during construction, Tricter Rig accomplished the project on schedule, including the installation of a few additional components.  The project success was furthered by the restoration of the surrounding area's rock drive lane and a nearby catch basin.

Risk Identfication, Procument & Communication Planning

Due to the nature of the work, scheduling and coordinating subcontractors for the project required a great deal of coordination and planning since it was most likely schedule slippage could occur if one or more subs missed a deadline. Tricter Rig utilized a thorough communication and procurement plan resulting in successful completion deadlines.   

The procurement plan consisted of thoroughly vetting all subcontractors and vendors to ensure they had the proper skills, resources and experience to perform work to project standards. 

Value Engineering

During the course of the project a number of items were identified that were not fully identified on the blueprints or items that conflicted with field conditions. On one occasion it was noted that the roof for the equipment room building was not thoroughly designed to shed rainwater and be fully watertight. Tricter Rig solicited a solution from a qualified vendor that came highly recommended. The vendor offered a thorough yet cost effective solution. The solution was accepted and implemented. This process gained BPA a cost effective, engineered and warrantied product without extensive time delays and further consulting costs.

Project Location

Salem, Oregon



Project Overview

Install a secondary containment/stormwater treatement system for oil filled equipment at the Albany Substation.  An impermeable oil containment liner was installed around two spare transfosrmers.  All liners (new & existing) were routed to three 816 vaults.  The first 2 vaults are API type oil water separators.  The third vault was an 816 equipped with a single row coalescing media.  Two manual shut-off vales were installed to allow manual direct isolation of the drainage/containment system.  A spill control liner (barrier boom) system was installed around three oil circuit breakers.

Key Components

  • Heavy Earthwork including mass excavation and embankment installatio
  • Installation of 2-816 API style oil/water separator vaults
  • Installation of 1- 816-2-CPS coalescing plate separator vault
  • Approximately 6,960 SF XR-5 Liner (installation self-performed)
  • Approximately 350 LF PVC piping
  • Excavation and equipment work in close proximity to electrical equipment
  • Installation of manual shutoff valve (2)
  • Installation of a semi-permeable oil spill control liner


Albany, Oregon



Project Summary

Installation of new secondary containment at Ovando Substation to bring that facility into compliance with regulatory requirements. Transformer Bank #1 did not have adequate containment for the 230-kV transformer which contains 7,700 gallons of insulating oil. This project included the installation of a new XR-5 underground liner system with a footprint that meets current design standards. In addition, installed one new 816-SA API oil-water separator (OWS#1), one new 612-2-CPS coalescing plate oil-water separator (CPS#1), one new manual shutoff valve (MSV#1), and associated plumbing.

Key Components

  • Installation of 1-816 API style oil/water separator vault
  • Installation of 1- 612-2-CPS coalescing plate separator vault
  • Liner installation at Transformer Bank 1
  • Approximately 1,500 SF XR-5 Liner (installation self-performed)
  • Approximately 100 LF PVC piping
  • Excavation and equipment work in close proximity to electrical equipment 
  • Installation of manual shutoff valve

Ovando, Montana