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  • Phase I Environmental Site Assessment Risk Decisions2
    Entry posted Jun 27 by JoeDerhakeContributor

    When doing Phase I Environmental Site Assessments, sometime the facts are on the border between a recognized environmental condition and an environmental issue.   This blog is my latest in a series of borderline decisions.  

    Here is the scenario: the Phase I ESA finds a classic REC on site.  Let’s say we have 15 years of dry cleaners on-site in the 1970s and 1980s—clearly a REC.  However, in this instance the site was redeveloped with a high-rise office building with a 3 level subterranean garage in 1988.  The construction project necessitates excavating 40 feet from lot-line to lot-line.   Assume groundwater is at 80 feet below ground surface. 

    The environmental professional may point out that the solvent could have penetrated all of the way to groundwater, but the excavation of 40 feet of soil clearly is a significant mitigating event.  

    Would you as an environmental professional still consider this situation a recognized environmental condition?   Would you recommend Phase II Environmental Testing?  

    Providing our clients with good environmental risk management opinions is a very important part of our job.  Please let me know what you think?

     

     

  • Environmental Professionals as Required by ASTM E15279
    Entry posted May 8 by JoeDerhakeContributor

    There has been much discussion about the creation of a national environmental professional registration system and having a new ASTM Standard to require that a ‘Registered’ Environmental Professional conduct a Phase I Environmental Site Assessment (ESA).

    I support such a requirement, as Environmental Professionals too often have to compete with either non-professionals or professionals in a related profession who think that because they are engineers or geologists, they are qualified to complete a Phase I Environmental Site Assessment.  The fact is, performing a Phase I ESA well depends heavily on experience.  Experience is what you need to uncover the less than apparent, recognized environmental conditions; it is what makes the assessor ask the less than obvious questions.

    Now, I realize that there is much to work out on the subject of the environmental professional registration process.  Who will run such a program?  What will be the qualifications? Who will verify education and/or experience? Who will design the ‘test,’ if the registration includes passing a base test?   I am open to all reasonable proposals here, but I would like to offer my recommendations:

    Who would run the Environmental Professional Registration Program?

    I propose that the ASTM would run the National Environmental Professionals Registry Program.   The ASTM could likely charge a significant fee—good, this will serve as a barrier to entry.

    Qualifications?

    Qualifications should require a combination of experience, education, and test base registration.    A professional with a strong education and state registrations would require less experience.  An individual without as much education or registrations can still become an EP, but would require more experience.  Again, here is my proposal:

    To become an Environmental Professional, the person must meet one of the following:

    1)      A Registered Professional Engineer or a Registered Geologist with five years  experience in environmental consulting;

    2)      A bachelors in science in a related field from an accredited university with 5 years full time experience in environmental due diligence;

    3)      A bachelors in arts or a bachelors of science in an unrelated field from an accredited university with 7 years full time experience in environmental due diligence;

    4)      Have the equivalent of 15 years of full time relevant experience.

    My suggested qualifications are a bit more stringent than those currently incorporated in ASTM 1527.

  • TCE by Another Name would Smell as Putrid
    Entry posted Apr 9 by JoeDerhakeContributor

    When doing a Phase I ESA, we all know that significant on site use of TCE, PCE, or vinyl chloride amount to a recognized environmental condition. But will we recognize these chemicals if they are called by an obscure brand name?

    For example, Petzinol is a branded solvent that contains a lot of TCE and this may slip by a field inspector. Beware of the following common name and brand names for chemical mixtures containing significant quantities of TCE:

    Acetylene trichloroethylene
    Algylen
    Anameth
    Benzinol
    Chlorilen
    CirCosolv
    Germalgene
    Lethurin
    Perm-a-chlor
    Petzinol
    Philex
    TRI-Plus M
    Vitran

    Similarly, here are common names and brand names for chemical mixtures containing significant quantities of PCE:

    Carbon bichloride
    Carbon dichloride
    Ethylene tetrachloride
    Perchloroethylene
    Tetrachloiroethtlene
    Ankilostin
    Blacosolve No.2
    Dee-Solv
    Didakene
    DowPer (Dow Chemical)*
    Isoform (Dow Chemical)
    Midsolv
    Nema
    Perclene (Du Pont, Diamond Shamrock)
    Perclene TG (Du, Pont, Diamond Shamrock)

    *Manufacturer names in italics.

     

    Recognizing these chemicals as evidence of Chlorinated Solvents is important to identifying Recognized Environmental Conditions and designing an appropriate Phase II Subsurface Investigation.

  • New Regulations on Dihydrogen Monoxide!15.0
    Entry posted Apr 1 by JoeDerhakeContributor

    The Obama Administration announces new regulations on Dihydrogen Monoxide (DHMO)!

    These regulations may prove to be the most significant regulations of the decade.   Environmental consultants see this as a huge new market.  I understand the EDR is will be creating a new product to help consultants understand where the DHMO risks are the greatest and I am trying to form an ASTM Task Group to explore a new standard that will address these regulations.

    What is DHMO?

    Dihydrogen Monoxide is a colorless and odorless chemical compound, also referred to by some as Dihydrogen Oxide, Hydrogen Hydroxide, Hydronium Hydroxide, or simply Hydric acid. Its basis is the highly reactive hydroxyl radical, a species shown to mutate DNA, denature proteins, disrupt cell membranes, and chemically alter critical neurotransmitters. The atomic components of DHMO are found in a number of caustic, explosive and poisonous compounds such as Sulfuric Acid, Nitroglycerine and Ethyl Alcohol.

    Why we are concerned?

    Each year, Dihydrogen Monoxide is a known causative component in many thousands of deaths and is a major contributor to millions upon millions of dollars in damage to property and the environment. Some of the known perils of Dihydrogen Monoxide are:

     
    • Death due to accidental inhalation of DHMO, even in small quantities.
    • Prolonged exposure to solid DHMO causes severe tissue damage.
    • Excessive ingestion produces a number of unpleasant though not typically life-threatening side-effects.
    • DHMO is a major component of acid rain.
    • Gaseous DHMO can cause severe burns.
    • Contributes to soil erosion.
    • Leads to corrosion and oxidation of many metals.
    • Contamination of electrical systems often causes short-circuits.
    • Exposure decreases effectiveness of automobile brakes.
    • Found in biopsies of pre-cancerous tumors and lesions.
    • Given to vicious dogs involved in recent deadly attacks.
    • Often associated with killer cyclones in the U.S. Midwest and elsewhere, and in hurricanes including deadly storms in Florida, New Orleans and other areas of the southeastern U.S.
    • Thermal variations in DHMO are a suspected contributor to the El Nino weather effect.

    Despite the known dangers of DHMO, it continues to be used daily by industry, government, and even in private homes across the U.S. and worldwide. Some of the well-known uses of Dihydrogen Monoxide are:

    • as an industrial solvent and coolant,
    • in nuclear power plants,
    • by the U.S. Navy in the propulsion systems of some older vessels,
    • by elite athletes to improve performance,
    • in the production of Styrofoam,
    • in biological and chemical weapons manufacture,
    • in the development of genetically engineering crops and animals,
    • as a spray-on fire suppressant and retardant,
    • in so-called "family planning" or "reproductive health" clinics,
    • as a major ingredient in many home-brewed bombs,
    • as a byproduct of hydrocarbon combustion in furnaces and air conditioning compressor operation,
    • in cult rituals,
    • by the Church of Scientology on their members and their members' families (although surprisingly, many members recently have contacted DHMO.org to vehemently deny such use),
    • by both the KKK and the NAACP during rallies and marches,
    • by members of Congress who are under investigation for financial corruption and inappropriate IM behavior,
    • by the clientele at a number of bath houses in New York City and San Francisco,
    • historically, in Hitler's death camps in *** Germany, and in prisons in Turkey, Serbia, Croatia, Libya, Iraq and Iran,
    • in World War II prison camps in Japan, and in prisons in China, for various forms of torture,
    • during many recent religious and ethnic wars in the Middle East,
    • by many terrorist organizations including al Quaeda,
    • by the semi-divine King Bhumibol of Thailand and his many devoted young working girls in Bangkok,
    • by the British Chiropractic Association and the purveyors of the bogus treatments that the BCA promotes,
    • by commodities giant Trafigura in their well-publicized and widely-known toxic-waste dumping activities in Ivory Coast,
    • in animal research laboratories, and
    • in pesticide production and distribution.

    If you are interested in participating in the ASTM work group please email me at joe@partneresi.com.

     

  • Passive Soil Venting Systems: when are they appropriate?
    Entry posted Mar 29 by JoeDerhakeContributor

    All of the soil vapor sampling that we do in buildings that once used solvents reveal some nasty soil vapors under these buildings.   Sometimes the problem is large and requires remediation, and sometimes the problem is de minimis.   For solvent releases that are relatively minor, Passive Soil Venting Systems are most appropriate.  

     

    Consider this case:   A California dry cleaner is measuring sub-slab soil vapor concentrations of PCE at levels of 100 ug/L, but concentrations attenuate rather quickly with depth.  Soil samples show low levels  (<50 ug/kg) of PCE at 5 feet below ground surface (bgs) and are non-detect by 20 feet bgs.    Assume the site is well characterized and groundwater is deep (100’).  

     

    With the site characterized, the geologist should compare the site to the applicable regulations.   First question to address:  Is the release a threat to groundwater?   If the site is located in Los Angeles, we would compare the levels to the Site Screening Levels set by the Regional Water Quality Control Board and the levels would pass easily.     Second question:  Are the PCE vapors a vapor intrusion risk and threat to human health?   The consultant would compare the data to CHHSLs and find that the sub-slab soil vapors exceed CHHSLs by a couple orders of magnitude and therefore are presumably a threat to human health.   Now the consultant may recommend testing indoor air or doing full risk assessment, which are all fine courses of action.   However, it is here when a Passive Soil Venting System should enter the conversation. 

    Often the problem is that there is a teaspoon of very toxic solvents in the shallow soils.  These soils represent some level of cancer risk via vapor intrusion.  We can build models and estimate the risk or we can rely on the often overly conservative CHHSLs, but either way we will ultimately want to mitigate the problem as cost effectively as possible.


    A sub-slab Passive Venting System accomplishes one thing, it provides the very low levels of PCE in soil gas a preferential path to escape that does not create a breathing risk to building occupants.    The reason this is such an attractive system is that a sub-slab Passive Venting System can be installed for 1/6th the price of an active remediation system.  


    Although Passive Venting Systems can be a little tricky to design, they can be more cost-effective.  The client should find a Professional Civil Engineer that is experienced in Passive Venting Systems and/or Vapor Barrier Design. 

  • Phase II by any name is still Soil Testing5
    Entry posted 12/29/09 by JoeDerhakeContributor

    What is the industry standard name for a Phase II?  Candidate names:  Phase II Environmental Site Assessment, Phase II Subsurface Investigation, Phase II Environmental Testing, Soil Testing?     Does it even matter?   Well, perhaps not much, but I think we are better off to use a common vocabulary.

     

    According to ASTM E1903-97 (2002), Phase IIs are called, “Phase II Environmental Site Assessment “ and are conducted “to evaluate the recognized environmental conditions identified in the Phase I ESA or transaction screen process for the purpose of providing sufficient information regarding the nature and extent of contamination to assist in making informed business decisions about the property; and where applicable, providing the level of knowledge necessary to satisfy the innocent purchaser defense under CERCLA”.

     

    I prefer the term Phase II Subsurface Investigation over Phase II Environmental Site Assessment as Phase I ESAs and Phase IIs are very different scope of work.   I like to give simple definitions to clients:  a Phase I ESA is basically all the reasonable research that you can do on a site; a Phase II is drilling holes in the ground.  


    Can asbestos testing, indoor air testing, or stormwater testing qualify as a Phase II?   These activities are often done as a follow-up to a Phase I and I have seen these activities called a Phase II; however, I think no.   Our clients would be mislead if we called these activities as Phase IIs—call them something else.

     

    What do you think?  Am I on the right track? 

  • Probable Maximum Loss Reports45.0
    Entry posted 11/1/09 by JoeDerhakeContributor

    As an engineer that has been providing lenders Probable Maximum Loss (PML) reports for the past 15 years, I was hopeful that the two new ASTM Standards published in 2007 would standardize the practice of PMLs.    However, the ASTM Standards are overly flexible and have not resulted in sufficient uniformity.  

    For a real estate financing transaction, a failing PML often precipitates onerous requirements that may affect the economics of the deal.    Lenders want to understand why a building passes or fails and they need a PML engineer to produce reports that can be trusted.

    The PML has long been somewhat controversial, as too often they have seen two engineers return two significantly different PML numbers for the same building.   One reason for this variance is that  the methods employed to calculate the PMLs by engineers vary widely. Recently, ASTM has updated their original PML Standard with ASTM 2026-2007 and published a new standard directed to lenders, ASTM 2557-2007.   These new standards have created uniform definitions for key terms and have nudged the industry towards uniformity.  However, ASTM 2026-2007 is a very flexible standard; this standard is a big tool box that offers many ways for an engineer to calculate a PML.   For a banker, PMLs that are calculated differently create inconsistency in their underwriting process. 

    Bankers can get greater consistence they must manage their PML providers by specifying their order request, just as bankers ask for specifics beyond the standard Phase I ESA, they should be more specific with their PML orders.  

    Here is how to order a PML.  ASTM 2557 recommends that the PML is reported as the Scenario Expected Limit, Design Build Earthquake, 475-Year-Event.  I recommend adding: Level 1 Building Damageability Assessment, Level 1 Building Stability Assessment, Level 1 Site Stability Assessment, and Calculated by the Thiel Zsutty Method.  I know that is a lot of variables, but if you do not control for these variables you will get different product engineer to engineer.  

    One more recommendation:  require the engineers should show the math.   For a report to be peer reviewable, the report must show the math.   Many downstream users do not completely trust the process and the best way to make them comfortable is by making the method calculation transparent.

  • Foreclosure Phase I Environmental Audits1
    Entry posted 9/12/09 by JoeDerhakeContributor

    This year I think half of the Phase I Environmental Audits that I do are on properties queued for foreclosure.  The Phase I Environmental Audits must meet the ASTM Standard 1527-2007, but in a foreclosure environment there are a few differences.  

    First, most clients want the Phase I Environmental Audit to be completely AAI compliant.  To save our clients a few bucks, sometimes we do not order an environmental lien in favor of reviewing a preliminary title report. But, when a lender is taking title to a property the Phase I Environmental Audit should be completely AAI compliant with no limitations.

    During a foreclosure, the borrower is not exactly excited about the process.   Often the site contact does not cooperate or is completely recalcitrant.   Sometimes our inspectors get shined at the site visit. Using an environmental firm with a local environmental site inspector helps mitigate this problem.  If the inspector had to fly to the site, then the firm may try to pass extra costs on to their clients.  Ask your consultant for a coverage map.

    Finally, lenders often want to know what kind of shape their asset is now.   Often the appraiser will need a Property Condition Assessment Report in order to deliver a value.    The Property Condition Assessment Report also helps when selling the property.

  • Building Energy Performance Disclosure3.0
    Entry posted 5/17/09 by JoeDerhakeContributor

    Thank you to Tony Buonicore with Building Energy Performance News and Jack Huntress of EDR!

    As many of EDR’s commonground readership know, this April the ASTM approved the formation of a committee to develop a national standard on Building Energy Performance Disclosures.    EDR and Tony Buonicore (one of EDR’s founders) have provided our industry much needed leadership over the years and their push of this standard is another manifestation of their leadership. 

    We need their leadership.  The environmental consulting industry is highly fractured.  No firm commands a double digit market share and 1,000 firms participate with a sub-one-percent market share.   The result is no one consulting firm can dedicate the time resources to creating an ASTM Standard that will benefit us all.   EDR’s position affords them the resources to invest time in long campaigns like creating ASTM Standards.

    I personally see great value in buyers of buildings understanding the energy ratings of the buildings that they buy.   When you buy a car, the fuel efficiency is on the window—buildings should have something similar. 

    California has led the way with Assembly Bill 1103, requiring sellers and lessors to disclose a commercial building’s energy rating to buyers and lessees, respectively.   The State of California mandated that disclosure of commercial building energy performance via EPA’s Energy Star Portfolio Manager.   The California mandated method of disclosure will have value, but the yet to be written ASTM standard has the potential to improve the process.

  • Groundwater vs. Ground Water
    Entry posted 4/11/09 by JoeDerhakeContributor

    The debate has raged through our profession for years.  Finally, the USGS has settled the issue:  groundwater is one word. 

     

    It has been a longstanding practice within the USGS to spell ground water as two words and to hyphenate when ground water is used as a modifier (e.g., ground-water hydrology). Ground Water Branch Technical Memorandum 75.03 (http://water.usgs.gov/admin/memo/GW/gw75.03.html) issued just under 35 years ago specified that the two-word form should be used.


    Language evolves, and it is clear that the one-word spelling of groundwater has become the preferred usage both nationally and internationally. The one-word spelling has been used by the Merriam-Webster online dictionary since 1998. Most water-resources publications also use the one-word spelling, as do many technical groups, such as the National Research Council. With the emphasis on interdisciplinary science, many USGS scientists who are not specialists in the field commonly use the one-word form, as increasingly do many hydrologists within the Water Resources Discipline.

     

    The term surface water has not seen the same language simplification that has occurred with the term “groundwater.” “Surface water” continues in the English language universally spelled as two words. Use of the two terms together spelled as “groundwater and surface water” has become common usage.

     

    With this memorandum, we are making a transition to the use of groundwater as one word in USGS. Changeover to use of the one-word spelling in our publications and web sites will be accomplished as seamlessly as possible. Reports in preparation should be converted to the one-word spelling where this does not require a special effort. Reports submitted for approval after August 1, 2009, will be expected to use the one-word form. During this transition period, the one-word or two-word spelling should be used consistently throughout a publication.

     

    With this settled our government can get down to the rest of the country's problems. 

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