CSC performed initial scope for the removal of potential asbestos and lead-containing building materials in an abandoned structure.  The Public Agency was in the process of demolishing all abandoned structures at a remote offsite facility.  After completing the initial assessment, CSC reported that the window putty contained asbestos in addition to other structural components, and that several pipes and roof locations were contaminated by lead-based paint.  CSC also conducted abatement oversight and provided final clearance services following the removal of the previously identified ACM and lead-based paint building materials. 

For this project, services provided by CSC included:

  • Attending pre-bid and pre-construction meetings
  • Conducting initial review of contractors submittals
  • Performing initial assessment of ACM and lead-based paint.
  • Performing abatement oversight, air monitoring and documenting regulatory compliance
  • Providing suggestions for redesign of abatement methods being employed by abatement contractor
  • Performing final visual inspection following abatement
  • Collecting clearance samples following the abatement
  • Generating clearance reports and close out documents for each project phase

Schedule:  CSC received a request from the client to perform this project, along with preliminary project document information for review.  This project was performed in phases; the first phase was the initial assessment and the second phase was abatement monitoring and final clearance. 

Final clearance report and close out documents were generated and delivered within approximately one week of completion for each phase. 

Project Outcome:  Initial project design called for this work to be performed under full containment. After reviewing the methods being employed to perform the abatement activities and review of the air sample results of the first few locations, CSC suggested that the abatement approach be modified.  CSC provided suggestions in the redesign of the abatement approach to include the following approach:

  • Set up the work area using tape.
  • Place drop cloths on the floor of the structure.
  • Remove ACM window putty and immediately bag or wrap in poly enclosure.
  • Remove lead based paint, wrap in poly and dispose of appropriately in hazardous waste labeled dumpster.


We have been more than pleased with the service provided by Clark Seif Clark Environmental. This is our second contract with them and their professionalism is top notch. I can only hope they are the successful bidder on our next contract as well.

Jim B.
Chief of Plant Operations II

Just want to say Thank You.
Your lunch presentation was nothing less than awesome. Your professionalism, enthusiasm, and knowledge energized the class. We look forward to a continued relationship with you and your organization. Thanks again,


I just wanted to take a moment to say Thank You for on excellent presentation on Saturday.
My technicians and I were all very impressed by what we learned, and I received some very positive feedback from the other offices in attendance. Being in the water damage business, we are frequently faced questions about mold growth from water damage customers, insurance personnel and property managers. Your presentation, visual aids and handouts were well planned and targeted to our particular interests. I think we can now address the topic with a greater sense of confidence (and a little less guesswork!). I am sending copies of your presentation packet to everyone who attended along with request for feedback. Thank you again for a well done presentation. I look forward to working with you on future projects.


Wanted to take a few minutes to express our "thanks" for the wonderful presentation that Derrick Denis gave at our office meeting last month.
We had over twenty agents in attendance and they were all very impressed with no only the knowledge, but the informative way Derrick presented the material. The Mold Disclosure Issue is one of the most confusing that we as real estate practitioners have had to deal with in a number of years. Derrick made the confusion somewhat less on our part and gave us all a better understanding if just how we should present this problem to our clients. Again, thank you for having such a wonderful person representing your company. We would not hesitate to use or recommend your firm to our clients.


Thank you again for being part of the Los Angeles County East Chapter (LACE) luncheon program last week.
We greatly appreciated your understanding of our audience and what they needed to know. Both your presentation and responses to the participants questions were right on target.


COVID-19: Assisting Clients with Strategies for the New Realities