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Residential Development HHRA Evaluation

Location: Marple Township, Delaware County, PA


In support of a Pennsylvania Department of Environmental Protection (PADEP) Act 2 Remedial Investigation Report (RIR) and Cleanup Plan (CP), Brickhouse performed a Baseline Human Health Risk Assessment (HHRA) for a future residential development in Marple Township, Delaware County, PA.  The property formerly operated as a pre-Mining Act quarry in the early 1900s, and most recently, was used by a construction company for equipment storage and maintenance. The currently unused property is proposed to be redeveloped by 26 residential homes.  The HHRA was unique in that the property is surrounded by woodlands on all sides.  A tributary to Darby Creek flows from west to east through the northern edge of the Site and the banks of the stream dip steeply down to the channel five to ten feet below surrounding grade.

The HHRA was conducted in order to characterize the potential exposure and risks associated with Site soil, bank soil, sediment, surface water, and soil vapor to all potential current and future human health receptors. Brickhouse used Site-specific conditions to consider individual and cumulative risks to both future construction/utility workers and child and adult residents.  Recreational users and trespassers were considered in the evaluation and Brickhouse conservatively assumed that future Site residents would also recreate along and within the tributary and may potentially be exposed to bank soils, sediment, and surface water, in addition to Site soil and indoor air.  Brickhouse employed upper-bound conservative exposure parameters to ensure that early lifetime exposure to mutagenic carcinogens was accounted for the residential child/recreator. Brickhouse was able to conclude that under baseline conditions, there are no adverse impacts to current- and potential future-use receptors at the Site and the original plan to include a two-foot engineered clean soil cap was no longer needed.

 

Filed Under: Risk Assessment

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Our Services

Site Remediation
Environmental Due Diligence
Solid Waste Management
Industrial Compliance
Water Resource Management
Expert Testimony & Litigation Support
Heating Oil Clean-ups
Risk Assessment

Contact Us

515 South Franklin Street
West Chester, PA 19382
610-692-5770 (Phone)
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brickhouse@brickhouse-environmental.com

Testimonials

Michael, I am so pleased with the response time, and thoughtfulness of your effort and Brickhouse in general. I wasted a LOT of time with other environmental companies. I guess it’s never too late. I plan on working for another 20+ years. Both you and Doug have been fantastic.

Jack B.
 

Dave, Very solid and professional work Dave. Thank you for everything.

– Dan W.
 

Paul, Thanks for your excellent work and planning for this. Glad it is done!

– Phillip R.
 

Your field staff were awesome. Steve is especially sharp and communicates well with the client and attorneys.
The whole crew inspired confidence, and made a strong impression that Brickhouse is a quality outfit.

– Sam C. and Mark R.
 

Excellent job to all at Brickhouse! Yet another successful project, nice work! Thank you.

– Scott E.
 

The loan went through! Thanks for all that you have done for us, you did an amazing job!!!

– Pete S.
 

We officially sold the home. We thank you and appreciate what you have done to ease the transition. Your expertise is duly noted and it was nice working with you.

– Joseph P.
 

It was a pleasure working with you guys… I will definitely call again when we run into any environmental issues on our projects.

– Steven O.
 

You did an absolutely incredible job. I am so impressed by the level of detail in the report. Thank you so very much.

– David T.
 

Thanks Paul and company, great job.

– Richard B.
 

Your work has been excellent and I will be very happy to continue our relationship going forward.

– Gordon M.
 

Thanks for the status updates, I got out there as they were working on the newly uncovered well. Nice guys out there, personable and professional.

– Gary P.
 

Thank you very much for your assistance in my tank removal project. Your managers and field crew were a pleasure to work with.

– Chris M.
 

Thanks Michael, you did a fantastic job on this report, and made my life a lot easier.

– Brian B.
 

Thanks so much for your continued great work on this project. We are impressed with your work.

– Michael H.
 

Dave Farrington and Brickhouse have worked with Action Manufacturing Company as consultants on our Environmental projects with excellent results.

– Randy A.
 

I want to thank you and Brickhouse for your help throughout this process. I will recommend you to everyone that requires environmental services. Your company is truly professional. Thanks again.

– Tommy M.
 

Thanks Dave. Outstanding effort by you and your team in getting this done.

– Richard F.
 

I just heard from my colleagues in Philadelphia about the case.  They had nothing but praise for the effort your firm contributed.  Thanks for stepping up to this project at the last minute.

– John C.
 
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