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May 24 - Tacoma, Washington
Mold Removal & Remediation

Mold inspection and removal in a bathroom

April 9 - Tacoma, Washington
Mold Removal & Remediation

crawl space water

November 18 - Tacoma, Washington
Mold Removal & Remediation

Mold removal

May 2 - Tacoma, Washington
Mold Removal & Remediation

Clean up of dry mold spores off of personal belongings in a small apartment, this includes HEPA vacuum and some textiles.

April 13 - Tacoma, Washington
Mold Removal & Remediation

Ensure black?? mold is removed in 1200 s.f. rambler house. Only one or two rooms showed small evidence of the black?? mold. Thanks, Ray.

Mold Removal & Remediation near Tacoma, Washington

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Services Offered: Environix - Tacoma      
Mold Removal & Remediation x      
Mold Testing x      
Mold Inspection x      
Lead Testing & Inspection x      
Asbestos Testing x      

Environix - Tacoma

2367 Tacoma Avenue South
Tacoma, WA 98402

Environix Certified Provider

Schedule Today

We are Tacoma's premier indoor environmental services firm; specializing in mold inspection, remediation, lead, asbestos and any other indoor air quality problems.  Check out dedicated site for our lead testing here.

A A Cleaning Co

905 97th St E
Tacoma, WA 98445

Sandy's Cleaning Svc

Tacoma, WA 98499

William Dixson

3315 S Pine St
Tacoma, WA 98409

Cleaning Co

2809 Rochester St W
Tacoma, WA 98466

Jordy's Inc

7202 Meadow Park Rd W
Tacoma, WA 98499

Demolition Specialists

Tacoma, WA 98409


4312 N 9TH ST
TACOMA, WA 98406

William Dickson Co

3315 S Pine St
Tacoma, WA 98409

Ascendent LLC

Tacoma, WA 98443

Hylebos Dredging Begins


Release date: 10/16/2002

Contact Information: Ken Marcy
(206) 553-2782


October 16, 2002

32,000 cubic yards of contaminated sediment to be removed and treated

With oversight from the Environmental Protection Agency, the Occidental Chemical Corporation this week begins a three to four month effort to dredge and treat 32,000 cubic yards of contaminated sediments in the Hylebos Waterway in Tacoma= s Commencement Bay.

The area being dredged, known as Area 5106, lies near the mouth of the Hylebos Waterway, just off shore of the former Occidental Chemical facility (currently owned by Pioneer Chemical) on Alexander Avenue. The sediments, which are contaminated with volatile organic compounds (VOC's) and semi-volatile organic compounds, (SVOC's) will be removed with a specialty dredge known as a 'Toyo'. The slurry of contaminated sediments will then be pumped directly to an enclosed holding tank, and then to treatment tanks. The treatment process removes the VOC's and SVOC's by heating, mixing and aerating the slurry in the tanks. Treated sediments will be de- watered and stored on the Occidental property until the disposal site in the mouth of the adjacent Blair Waterway is prepared. .

Last March, the EPA issued orders to Occidental and other responsible parties requiring them to proceed with clean-up activities. The Hylebos Waterway is one of three remaining waterways in the Commencement Bay/Nearshore Tideflats site requiring cleanup under Superfund. Dredging work for the remaining reaches of the Hylebos is slated for 2003 and 2004.

"Marine life in the bay is constantly threatened by the pollutants in these sediments," said John Iani, Administrator of EPA's regional office in Seattle. "Occidental's efforts to remove these contaminants are another important step to restoring a healthy bay."

Since the late 1800's a multitude of industrial uses, including shipbuilding, oil refining and chemical manufacture and storage have caused widespread hazardous waste contamination of the soil and nearshore sediments in Commencement Bay. Many of the contaminants have harmed marine life and pose a threat to humans who consume fish and shellfish from the area.

Example of Mold Removal in Tacoma, WA

Date of Remediation: March 7th, 2011

Mold Growth:

  • Inspection of attic revealed moderate mold growth throughout significant areas of attic sheathing.  At this time, the mold growth has not lead to significant structural damage of the underlying materials. However, the mold growth may be a health concern and is an indication of a failure of the home to adequately exhaust damp air created by the occupants. 


  • Elevated moisture noted throughout significant portions of the attic sheathing.  It is necessary to thoroughly dry the framing and sheathing prior to the application of encapsulant.


  • No obvious roof leaks were observed on inspection of the attic.  Environix is not a professional roofing contractor and cannot guarantee the condition of any roofing structure.


  • Insulation shows no signs of significant water damage, or mold growth.  Spores may be present in the insulation, and it can be removed at the customer’s request, but once the recommended steps are performed the spores are unlikely to negatively impact indoor air quality.
  • Insulation is insufficient to meet current standards, it is recommended that attics be insulated to a level of R-38 where possible to prevent unnecessary heat loss.


  • Insufficient soffit ventilation throughout the attic.  Existing ventilation blocked by improperly installed insulation.  This limits the influx of fresh air through the soffit vents, leading to excess condensation and mold growth.  It is recommended that blocked soffit vents be cleared and all soffit venting be protected by the appropriate baffling.
  • Proper ventilation is necessary to minimize condensation and subsequent mold growth.  All areas of elevated moisture or improper ventilation must be addressed to ensure the effectiveness of our process.  Current code calls for 1sqft of ventilation for every 300 square feet of attic space, distributed evenly between the ridge and soffit area. 

Air Seal:

  • The ceiling currently lacks proper air sealing, allowing excess moisture and heat to escape into the attic area.  This air leakage is a key cause of energy loss, attic condensation and mold growth. 


  • The exhaust ducting from the bathroom fan, whole house fan and/or kitchen range exhaust hood is not appropriately venting to the exterior.  This condition allows warm moist air to flow into the attic and is likely a contributing factor in condensation.  It is necessary for all exhaust ducting to vent completely to the exterior through insulated ducting and be connected to a dedicated roof jack with appropriately sized collar.

Trash and debris:

  • The attic currently has walk-boards or make-shift flooring installed. These must be removed to provide access the cavities for insulation and air-sealing improvements.
  • The attic is currently free from excessive amounts of trash and construction debris.
  • Stored contents located in attic, it is necessary for these contents to be completely removed prior to the start of any remediation work.

Interior Ventilation:

  • It is necessary to ensure appropriate ventilation, and prevent the buildup of humidity and other pollutants.
  • Current standards recommend 0.35 to 0.7 air changes per hour, this may be attained by installation of a ducted heat recovery ventilator or upgrading mechanical exhaust ventilation to function on a continuous flow (the recommended units for this method is a Panasonic Whisper Green exhaust fan).
  • The estimated square footage of this home is 1,400 sq.ft.
  • The necessary flow rate to establish 0.35-0.7 ACH for this home is 65-130CFM.

Important considerations for mold removal and remediation in the Tacoma area.

  • Due to the age of homes in the Tacoma area, mold remediation project may run into other indoor environmental hazards such as lead and asbestos. 
  • The age of homes in Tacoma also means plumbing leaks are more likely. 

Make sure your mold remediation contractor follows environmental guidelines!

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