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..
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.
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.
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.
Install a new stormwater treatment system and upgrade the facilities existing operating system while preserving the efficiency of the day to day business operations.
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.
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.
Upgrade the stormwater treatment and containment system
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.
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.
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
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.
This project was comprised of storm, sewer, water, gas, building footings and parkinglot upgrades.
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.
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.
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.
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.
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.
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.