Waterstone Environmental is a full-service environmental consulting firm that provides the following consulting and engineering services:

The Firm

Waterstone Environmental, Inc. was formed in 1997 as a group of senior scientists and engineers applying their decades of experience as active consultants in the environmental area. 

We employ a team approach and senior consultants work intimately on all aspects of each project. As a result, we believe that we have established a service-oriented company culture that provides our clients with high quality consulting and timely service.

HHRA Note 10 and ITRC's TPH Risk Evaluation Web Document

March 2019

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On September 4, 2018 the Toxicity Criteria for Human Health Risk Assessments, Screening Levels, and Remediation Goals rule (hereafter “Rule”) was approved by the State of California Office of Administrative Law and became effective immediately. In February 2019, DTSC HERO issued a new HHRA Note to address the specification of promulgated criteria and address the recommendation and approval of recommended criteria. 

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Regarding TPH Risk Evaluation, HHRA Note 10 recommends consulting the ITRC TPH Risk Evaluation at Petroleum-Contaminated Sites guidance document.

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Amendment to the Industrial General Permit

July 2019

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The new amendment to the General Permit for Stormwater Discharges associated with Industrial Activities in the State of California will likely become effective on July 1, 2020. This amendment includes a list of impaired water bodies and the Total Maximum Discharge Limits (TMDLs) that will apply to stormwater dischargers within those watersheds. You can check if your facility is located within an impaired body watershed with the online mapping tool.

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Fall 2019 at UCI Continuing Education

October 2019

The new quarter (Fall 2019) at UCI's Division of Continuing Education starts this week. Once again, Waterstone staff member, Brianne Archer, is excited to teach Chemical and Physical Principles of Environmental Management. It's a great survey course for those interested in the interdisciplinary approach of using chemistry, physics, geology, meteorology, bioremediation and engineering principles to identify, evaluate and manage multi-media environmental problems.

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LA County Bar Association - Environmental Law Fall Symposium

November 2019

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Thanks for coming out to see Waterstone at the 18th Annual Environmental Law Fall Symposium.  This year’s Fall symposium offered three panels focused on: (1) A science and legal update on “Forever Chemicals” such as Per- and polyfluoroalkyl substances 

(PFAS), (2) The future of alternative fuel transportation, (3) AB 617 California’s new nonvehicular air pollution criteria. 

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We'll see you again in Spring 2020.