Displaying items by tag: environmental investigation

Understanding the Costs of a Phase I Environmental Site Assessment (ESA)

"Why does it cost so much for a Phase I Environmental Site Assessment?" This is the most common question from prospective clients seeking this type of service. After all, the product is simply a large document outlining the detailed history of the property. How difficult is that?

First, understand that all Phase I Environmental Site Assessments (ESAs) must be conducted using the guidelines in the American Society of Testing & Materials (ASTM) Standard for Phase I ESAs. Following the ASTM standard assures protection from environmental damage caused by previous property owners.

Okay - so why does it cost so much? Let’s start with what it takes to prepare a Phase I site assessment according to the ASTM standard.

What are the Phase I Preparation Steps in an Environmental Site Assessment?

The preparation of a Phase I ESA can be broken down into the following steps:

What Drives the Cost of an Environmental Site Assessment?

Government and Historical Records Review

A large amount of time is spent on conducting a thorough investigation into the current and historical uses of the property under review. This is done by reviewing governmental and historical records. As seen in the table above - this takes up to 28 hours. 

Many Phase I providers turn to Environmental Data Resources (EDR), a company that tailors their products to comply with the ASTM Standard. EDR searches hundreds of federal, state, local, and tribal databases using the property as the focal point. An EDR database package for Phase I costs about  $375.

Local governmental agencies are also contacted for records related to the property under review. These agencies can include local fire departments, environmental health agencies, building departments, and tax assessors (for verifying property characteristics). Some agencies have their files available online, others will copy requested files and mail a CD, and others require an in-person visit to their office to review the files.

Historical records such as air photos, street directories, topographic maps, and fire insurance maps (Sanborns Maps) are also reviewed to provide information on past uses of the subject property. For example, if the local governmental agencies have no records of any USTs being used at the property, but an air photo from 1949 shows a gas station canopy on the property, then we’ll cross-check the historical street directories to see if a gas station existed at the property during this year.

Interviews, Inspection, and Reporting

Along with records review, interviews are conducted, the site is inspected, and a report of findings is prepared - according to the table estimate, up to 29 hours of work.

Completing a Phase I ESA can take at least 40 hours, with the average being around 52 hours. We quote most of our Phase I ESA projects between $4,200 and $5,500,on a fixed fee basis.

Why does the Phase I Report cost so much more than the Environmental Data Resources (EDR) Report?

To meet the ASTM Phase I standard, an Environmental Professional must conduct, or be responsible for conducting a Phase I ESA. The EP and staff must have sufficient education, training, and experience to conduct a Phase I ESA, and that drives cost.

The cost of an EDR report is fixed at a low price because it is primarily a computer-generated database dump. On the other hand, the EP and their staff sift through the EDR report, inspect the site, conduct interviews, and review historical information. They gather all the relevant information and summarize it in a Phase I report that includes conclusions and recommendations. It is these recommendations and conclusions that commercial real estate transactions depend upon. That is what drives the cost far above the cost of an EDR report.

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Our Phase I ESA preparers are well-qualified, with over 30 years of experience in the industry. We are here to answer your questions, and our initial consultation is always free. Click the button below to schedule a consultation or call us today at (831) 475-8141.

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An attorney we work with asked me to look at a phase I environmental site assessment (ESA) for his client. His client was really interested in the property, which already had a solid lease.

The ESA disclosed a historically recognized environmental concern (HREC) and a recognized environmental concern (REC). Both had to do with a release of gasoline from a former underground storage tank (UST) at the property. The property had environmental case closure with very low levels of gasoline contamination left in place.

The question posed by the attorney’s client boiled down to the Phase I recommendation - “Complete a Vapor Intrusion Assessment and Prepare a Soil Management Plan”.

“Is this necessary?” the client asked.

I told them that the recommendation was very conservative based on the information provided by the ESA. I let them know that if they planned to redevelop the property, the county would probably look to them to voluntarily investigate for vapor intrusion and prepare a soil management plan as part of the redevelopment.

I advised that the recommendation was overly conservative given their intention to hold the property as is. I also told them that it was unlikely a vapor intrusion assessment would disclose a vapor intrusion problem.

As we were wrapping up, a question came up, “What is a vapor intrusion assessment?”

I started my answer with an explanation of vapor intrusion.

Experienced Environmental Consulting in the Monterey Bay Area

You’re reading this because you are looking for an honest and reliable environmental consultant who will save you money, give you the answers you need, and provide reassurance. When confronted with an environmental issue, one of the most important questions you’ll have is, who are the best consultants in my area?

RRM wants to help prospective clients find the best company to meet their needs. We’ve been in business since 1992 providing cost-effective solutions to environmental challenges, and we understand the necessity for exploring other options. We compiled a list of local companies to help you narrow your search.

Here are our top picks for Environmental Consultants in the Monterey Bay, CA area

Weber, Hayes, & Associates

Located in Watsonville, WHA has been providing environmental and geotechnical services since 1988. They have extensive experience providing services to the agricultural industry, including guidance on stormwater conveyance and detention, and waste discharge for composting operations.
(831) 722-3580
www.weber-hayes.com

Aero-Environmental Consulting

This company operates from Monterey and offers a wide range of environmental testing and inspection services in areas such as industrial hygiene, building science, and specialty construction. Their industrial hygienist provides consulting in indoor air quality testing, indoor environmental services, and environmental analysis.
(831) 277-5831
www.aero-enviro.com

Trinity Source Group, Inc.

Established in 2005, Trinity is located in downtown Santa Cruz. They offer a broad range of environmental consulting, management, and construction services with a turnkey approach to environmental challenges. This includes providing drilling services in addition to environmental services.
(831) 426-5600
www.trinitysourcegroup.com

Red Hills Environmental

Based in Los Gatos, RHE offers a full range of professional and technical services for the investigation, remediation, and management of difficult environmental conditions. They are great at helping people understand tricky compliance situations.
(408) 455-9300
www.redhillslg.com

While cost is always one of the first topics you might discuss, you might also want to hear about their experience in dealing with your particular problem, about their relationship with the relevant county and state agencies involved, project timing, and what potential contract arrangements look like.

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We hope this post has provided you with information that helps you make the best choice. No matter which consultant you choose, we are here to answer any questions. Click the button below to schedule a free consultation or call us today at (831) 475-8141.

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What is an Environmental Screening Level (ESL)?

“I keep reading about how contamination levels are above the ESL, but all I really care about is closure. Instead, more samples and more talk about the ESL. I don’t know what this ESL is, but apparently I won’t get case closure until it is reached,” she said. “I’ve ignored it long enough - what is an ESL?”

“Good question,” I said. This prospective client came prepared with a tough question.

“ESL stands for Environmental Screening Level, '' I told her. “It’s the level of a chemical that signals there is a potential for harm to humans, water life, and animal life.” In the lull that followed, I added, “I know that’s a lot, so let’s start with where ESLs come from.”

Risk-Based Screening Levels (RBSLs) and Environmental Screening Levels (ESLs)

ESLs began as RBSLs

Risk-based screening levels (RBSLs) were first published by the San Francisco Bay Regional Water Quality Control Board (Board) in 2000 as a way to speed up human health and environmental risk assessments for contaminated sites.

Assessments were made easier by using a set of site conditions to estimate chemical levels (risk-based levels) that pose no harm and using them for comparison with levels at a contaminated site. If contaminant levels in soil, groundwater, or soil vapor were found to be below the RBSLs, then the site was considered low risk, otherwise, contamination levels were judged to be a potential risk.

The scope of the RBSLs expanded, and in 2003 the Board changed the name to Environmental Screening Levels (ELSs). Since then there have been several updates with the last in 2019.

The Board states that ESLs are not cleanup goals, however, the Board also states that for many sites ESLs are selected as cleanup goals. At a minimum, the Board accepts ESLs as preliminary cleanup goals.

“Okay,” my prospective client said. “What does low-threat mean?”

What is a Low-Threat Environmental Screening Level (ESL)?

In the context of ESLs, low-threat typically refers to chemical concentrations in soil, groundwater, or air that do not increase the chance of developing cancer or increase harm to humans.

For chemicals that cause cancer (carcinogen), low-threat means concentrations that result in less than one chance in a million (1 in 1,000,000) of developing cancer from lifetime exposure. For non-cancer-causing chemicals, a hazard quotient is used to gauge the potential for bodily harm. The hazard quotient is a ratio that compares the estimated exposure to a chemical to the reference level of that chemical at which no harmful health effects are expected. A hazard index of 1 or more indicates the potential for harmful non-cancer health effects.

“Well, thank you,” my caller said. “ If I understand you correctly, an ESL is an okay amount of contamination that is not a threat to human health and animals. I can appreciate that.” With that, we set up a time to talk about her site and ended our phone call.

Environmental Screening Levels and Cleanup Goals

We took a look at environmental screening levels, or ESLs, published by the San Francisco Bay Regional Water Quality Control Board. We noted that while ESLs are not specifically contamination cleanup goals, they can be used as cleanup goals and oftentimes are. Do you have a question about environmental investigation and cleanup? We have over 30 years of experience providing environmental services. Give us a call at 831-475-8141 or click the button below for a free consultation.

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How Much Will a Phase II Assessment Cost?

A close friend called. She told me she was working on a development project, and just got the results of a Phase I Environmental Assessment. The assessment pointed to a potential obstacle to the project - a Recognized Environmental Condition (REC). The project site used to be a dry cleaner that closed up shop a few years back, and the assessment noted there could have been a release of tetrachloroethylene, or perchloroethylene (PCE) into the soil and groundwater. My friend was really upset. It was already difficult enough with stakeholders, banks, city and county regulators taking chunks of her time and money - now this. She was stressed. “Can you help?” she said, “Now they want a Phase II Assessment to investigate the REC (Recognized Environmental Condition). All I want to know is, how much is this going to cost?”

I paused for a moment thinking, “It depends…”, but quickly remembered the stress she was under. “How about we meet for coffee in a couple of hours and in the meantime, I will work up a cost for a Phase II Assessment for you?” That’s what she wanted to hear.

Why a Phase II Assessment is Often Recommended

A Phase II Assessment is often recommended to verify a REC (Recognized Environmental Condition). In the case of my friend, a Phase II was recommended to determine whether there was a release of PCE. Typically, a Phase II assessment entails collecting soil and/or groundwater samples and analyzing the samples for particular chemicals. Often, a Phase II Assessment means the same thing as a soil and groundwater investigation.

My friend described the site as a small empty retail unit at a shopping mall, so it seemed to me that we could find out if there had been a chemical leak by drilling three small-diameter holes into the ground to collect soil and groundwater samples. One at the former location of the dry-cleaning machine, one at the floor drain, and one along the sewer leaving the unit. At least two soil samples and one groundwater sample would be collected from each hole, and samples would be analyzed at a state-certified laboratory. A soil and groundwater investigation report would be prepared that would include methods, results, conclusions, and recommendations. All the work would be overseen by a professional geologist or engineer whose signature would appear on the final report.

Breaking Up the Phase II Assessment Into Tasks

One way to estimate the cost of work is to break it up into tasks, and then estimate the cost of each task. A Phase II soil and groundwater investigation can be broken into three main tasks:

• preparation of a work plan,
• fieldwork, and
• reporting.

Estimate the Cost

With the tasks identified, we can estimate the cost. My knowledge and experience are important here, but a reference carries weight. The California Underground Storage Tank Cleanup Fund, a state program for underground storage tank owners and operators that funds investigation and cleanup, publishes cost recommendations (Guidelines). While these recommendations are associated with work on sites contaminated with gasoline and the like, they can be applied to assessment work for other compounds, such as the dry-cleaning chemicals my friend was worried about.

Work Plan

The work plan:

• identifies known property conditions,
• the potential contaminants and
• suggests how best to take samples.

The Guidelines estimate the 2018 cost of a Phase II soil and groundwater investigation work plan at $3,380.

Adjusting for inflation, about 8.6% according to California Consumer Price Index (CPI) Inflation calculator, we have estimated the cost of a Phase II soil and groundwater work plan at $3,671. (Note – you can also adjust estimated costs to a particular area of California or to a national average.)

Field Work

For field work, we will consider the cost of drilling three holes to 30 feet as suggested in the Guidelines. In the description of work, the Guidelines include scheduling, coordination, field preparation, permitting and field work in the estimated cost for three holes. The Guidelines also include costs for equipment rental and supplies, a drilling contractor, chemical analyses, and subcontractor mark-up. Here the number of samples and methods of sampling that the Guidelines recommend differing slightly from the proposed work for my friend’s site. To address the differences, we will simply adjust the Guidelines cost by subtracting unnecessary costs.

As presented in the Guidelines, the total cost to drill three holes to 30 feet is $11,244, but after adjusting for the difference in the number of samples to be analyzed (9 for my friend versus 15 in the guidelines) and the number of analyses to be conducted (one for my friend versus two in the guidelines), the total cost for drilling three holes to 30 feet comes down to $8,308.

Field work also includes health and safety coordination and waste disposal. The Guidelines estimate the cost of a Community Health and Safety Plan at $1,392 and waste disposal at $145 per 55-gallon drum of soil waste. It is likely only one drum of waste will be generated during field work on my friend’s project.

Reporting

Regarding an assessment report, the Guidelines provide the cost for a report where six holes are drilled and three of the holes are converted to groundwater monitoring wells. It’s clear the scope of work linked to the Guidelines estimate is greater than for my friend; however, in my experience, the difference in terms of report preparation is small, in this case, less than $500. The Guidelines quote $6,944 for an investigation report – let’s say $6,500 for our report.

Something Left Out

Finally, is there anything we left out? For example, it’s likely the floor of the unit is concrete, and we will need a concrete driller to actually get underground. Additionally, now that we have holes in the floor, we will need to restore the floor by backfilling the holes and patching the surface. The Guidelines are not much help here, but in my experience, a concrete-cutting contractor is going to cost about $500 and the backfill and patch is going to cost about $900.

Now, what else did we miss? Something. To address this something, we use a contingency factor, say 10 percent. This additional 10 percent is to account for things we did not address or for unforeseen circumstances – like the concrete floor being 15 inches thick instead of the typical 6-to-8-inch thickness.

Estimated Cost

Now we are ready to sum up the costs. Between the work plan, field work, and the report, the total estimated cost (adjusted for inflation) is $22,946. With a 10% contingency the total cost ranges from $22,946 to $25,241. Now I was ready for a cup of coffee with my friend.

I arrived on time to find my friend seated at a window table. She looked up and noticed me, “Hi, great to see you”, she said. We received our coffee and spent what seemed like forever adding cream and sugar in silence. I spouted up, “Ready for the news?” She slumped, “Okay.”

I started with my explanation of how I got the estimate, but when I looked over, her glazed eyes told me to get on with it. “Alright, I estimated the cost for a Phase II soil and groundwater investigation at your location to be $25,000.” The glaze turned intense, “That’s a heck of a lot of money - why does it cost so much?” I thought for a moment and said, “Let’s look at the factors that drive cost.”

Factors That Drive Cost Up in a Phase II Assessment (Why Does it Cost So Much?)

There are several factors that drive the cost of a soil and groundwater investigation, but for me, two factors top the list: the type of contamination and site location.

Type of Contamination

The type of contamination can be broken down into the composition (what’s in it), the magnitude (how much is there), and the extent (how far has it spread).

Site Location

Site location includes things like where the site is located, how big it is and whether improvements have been done, the location of groundwater, site geology, local regulations, site use (residential or commercial); and how hard it is to properly dispose of waste from drilling.

Let’s take a closer look at some of these factors.

"Well, that sounds complicated," she said. “So you’re saying that if the groundwater was deeper at my place, a soil and groundwater investigation would cost more?” “Yes”, I said, “for one thing, the field investigation might take longer than it would otherwise, increasing the cost.”

“So it could be worse…” she said flatly.

We sat in silence for a moment and then I asked if she had any more questions. She sat up straight and said, “Probably, but thank you. I need to let this soak in.” “No problem”, I replied, “let me know if you need any more help with your project.” I let her know our firm was a one-stop-shop that could provide all the environmental-related services she would need to complete her project. I also told her we are very sensitive to the hardships, both financial and emotional, that environmental issues bring.

Understanding the Cost of a Phase II Environmental Assessment: Factors That Influence the Price

We covered a lot of ground here. Using cost guidelines from California’s Underground Storage Tank Cleanup Fund as a reference, we broke down how much it costs to complete a Phase II soil and groundwater investigation, including the work plan, field work, report, and a 10% contingency. We also looked at the two primary factors that make a Phase II assessment so expensive - the type of contamination and site location. 

Are you staring down the barrel of a Phase II Assessment, and don’t understand why? Are you having trouble juggling the competing demands of regulators and other stakeholders?  Let us help. We’ve got 20 years of experience solving problems just like this. Schedule a consultation by clicking the button below, or just give us a call at 831-475-8141.

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An Inroduction to Vapor Intusion

We got a phone call from a concerned citizen. She was concerned because the county environmental health agency sent a letter stating vapor intrusion could be occurring at her property. “Before I talk to anybody at county health, I want to know what vapor intrusion is and what it means for my family,” she confessed. 

“If you have a moment, I’ll explain,” I said. “Let’s start with the vapor.”

The Vapor

Understanding Chemical Evaporation: Why Some Liquids Evaporate Faster than Others

I’m sure you’ve seen gasoline evaporate off the pavement, or a bowl of water evaporate leaving salt rings behind. How about rubbing alcohol? You might have noticed how it quickly evaporates leaving your skin cold. When you think about it, you might have noticed how gasoline or rubbing alcohol evaporates much faster than water. What’s going on?

When a liquid chemical evaporates, it turns from a liquid into a vapor or gas. All liquid chemicals evaporate to some extent, and the extent to which a chemical liquid evaporates shows its volatility. The more volatile a chemical liquid is, the greater the tendency it has to generate vapor. Gasoline has a greater tendency to turn into vapor than water, that’s why gasoline evaporates off the driveway faster than water, and that’s why gasoline is more volatile than water.

The Intrusion

The Risks of Vapor Intrusion: How Chemicals from Leaked Liquids Can Enter Buildings

When a liquid chemical leaks into the ground, it enters the soil and groundwater. Once in groundwater, the chemical has the potential to move along with the groundwater. As this process unfolds, and depending on its volatility, some of the released chemical turns into a vapor and enters the space of dry soil between the groundwater surface and the ground surface. At the ground surface, the vapor can enter buildings causing a buildup of chemical vapors. 

Vapors primarily enter through openings in the building foundation or basement walls such as cracks in the concrete slab, gaps around utility lines, and sumps. It also is possible for vapors to pass through concrete, which is naturally porous. In their vapor form, contaminants like gasoline, tetrachloroethylene (PCE), and other volatile organic compounds (VOCs) can be inhaled, thereby posing immediate or long-term health risks.

What is Vapor Intrusion?

After explaining what vapor is and what intrusion is all about, we got back to the subject of the county's letter. I explained, “The letter is warning you that a groundwater plume contaminated with PCE may have moved under your property and the PCE vapor from the plume may be causing a vapor intrusion health risk.”

“The letter goes on to request you contact the county office so they can arrange sampling soil vapor at your property and determine if there is a health risk,”  I finished.

“So what if they find contaminated vapor beneath my property?” she asked.

I told her it depends on the level of contamination. At low levels, only monitoring may be necessary to show vapor intrusion is not a threat over time.  At moderate to high levels, contaminant cleanup and/or mitigation might be required to eliminate a vapor intrusion health risk.

“I have one more question,” she said. “Who’s going to pay for all this? It wasn’t our fault the contaminated groundwater moved under our property.”

I sympathized and explained that there are various grant and funding programs in California for this situation. “I am sure that if the county finds contamination, they will look to those responsible for the contamination, and if they can’t find those responsible, they will use the appropriate funding mechanisms available from the state.”

What is the definition of vapor intrusion?

Vapor intrusion refers to the migration of volatile chemicals from contaminated soil or groundwater into the indoor air of buildings. This can occur when chemicals such as volatile organic compounds (VOCs) or radon gas migrate through the soil and into buildings through cracks in foundations, basement floors, or walls.

Protecting Yourself from Vapor Intrusion: Tips and Solutions

We looked at what vapor intrusion is and how it could affect anyone near a contaminant release, even if the release didn’t happen on your property. The next question is how to protect yourself from vapor intrusion. Check this space for some answers.

We have over 30 years of experience dealing with problems like vapor intrusion, cleanup, and mitigation. If you have similar issues, we may be able to help. Click on the button below for a free consultation and learn more about what we can do to help.

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We have a client who was the operator of a dry cleaner. Before he retired, he had already faced the consequences of being the responsible party for tetrachloroethylene (PCE) release from his operation. He did what was required by the local oversight agency and received a closure letter.

Our client had been retired for some time, living on a fixed income, when he got a letter from the local oversight agency he had dealt with while in business. The letter said that an investigation down the street from his former dry cleaning business found PCE, and they pointed the finger at the retiree. He replied with the truth; “I don’t have the money.”

That didn’t stop the oversight agency. The next letter told our client to apply for a SCAP grant. The regulator was referring to the Site Cleanup Subaccount Program (SCAP) run by the California State Water Resources Control Board (Board). Of course, our client had no idea what SCAP was and called with a host of questions.

What is Site Cleanup Subaccount Program (SCAP)?

SCAP is a funding program established by California Senate Bill (SB) 445, allowing the Board to issue grants for the cleanup of surface water or groundwater contaminated with human-made chemicals that harm, or threaten to harm, human health and the environment (e.g., fish, animals).

Who is a SCAP Grant For?

An applicant must meet three conditions to be eligible for a SCAP grant:

1. The applicant must have a site with surface water or groundwater contaminated by human-made chemicals.
2. The contamination harms or threatens to harm human health and the environment.
3. The site is under regulatory oversight for cleanup.

SCAP grants are awarded to responsible parties (those named by the Board as responsible for a release), public agencies, public utilities, non-profit organizations, tribes, and mutual water companies. The grant applicant(s) must show they lack sufficient financial resources to perform the required work. This means the applicant must provide certain financial records. For example:

• Individuals – individual income tax returns for the most recent three years.
• Businesses – business income tax returns for the most recent three years; Secretary of State documentation identifying the business and authorized signatories.
• Trusts – income tax returns of the trust and trust documents
• Limited Liability Corporations (LLC) – income tax returns of the LLC and identification of the partners who receive income from the LLC.

In addition to financial information, the Board also asks for a scope of work, cost estimate, and duration of the proposed project. 

The financial information, project budget, and project duration are used to make a preliminary determination of the ability of the applicant to pay for the project. The Board uses The U.S. Environmental Protection Agency’s (EPA) Penalties and Financial Model to estimate the applicant's available cash flow for the duration of the project.

What Cleanup Projects are Eligible for a SCAP Grant?

Cleanup projects are eligible when they:

• Provide cleanup to remove the harm or threat of harm to human health and the environment;
• Are not eligible for other Division of Financial Assistance funding programs; and
• Emphasize cleanup.

What are the Factors for Consideration for Awarding a SCAP Grant?

SCAP requires the Board to weigh the following considerations for awarding a grant:

1. The level of threat to human health, safety, and the environment from surface water or groundwater contamination at the location.
2. Whether the location is in a small or financially disadvantaged community.
3. The cost and potential environmental benefit of the investigation or cleanup.
4. Whether there are other potential sources of funding for the investigation or cleanup. 
5. Any other information the Board identifies as necessary for consideration.

There is no other guidance provided by the Board regarding how the five considerations are appraised, but there is a list of sites that received a SCAP grant. We took a sample of those sites, reviewed site characteristics as they relate to the five considerations, and summarized our findings as five rules of thumb.

Awarding a SCAP Grant: Rule of Thumb 1

Rule of Thumb 1 - The location of a contaminated site poses an immediate or imminent threat to human health, safety, and the environment (aquatic and terrestrial); or the site has significantly high PCE and TCE concentrations (>100,000 ug/m³) in soil vapor that pose an immediate threat or strong potential threat to human health, safety, and environment.

To get information for the sample sites, we reviewed case files uploaded to GeoTracker, the Board’s database of contaminated sites. Dry cleaners topped the list recently of awarded grants with at least 10 grants from a total thirteen sites awarded SCAP grants. One site was designated as a “Brownfield” site. While SCAP is not exclusively for dry cleaners, the list of awarded grants leans heavily in that direction. For the sites we reviewed, contaminants of concern were mostly long-lasting compounds such as methyl tertiary butyl ether (MtBE), tetrachloroethylene (PCE), and trichloroethylene (TCE).

There were a few sites where petroleum hydrocarbons (gasoline and diesel) were the contaminants of concern, and while the impact did not cause immediate threat (ongoing exposure to contamination), it did leave the sites with an imminent threat (strong potential for exposure) to human health and the environment. In one case involving petroleum hydrocarbons, the location of the impact threatened surface water and levy construction that if left undone would have caused an immediate threat to human health, safety, and the environment due to flooding.

In the case of MtBE, contaminant levels in groundwater were moderate, but the Board suspected that MtBE-impacted groundwater infiltrated an unused water supply well that connected upper water zones to deeper water zones. MtBE-contaminated water moving from shallow to deeper zones was considered an imminent threat to human health and safety. 

For most of the sites we reviewed, groundwater was impacted by PCE and TCE, but it was the concentrations in soil vapor that created a threat  to human health. In these cases, PCE concentrations in soil vapor easily exceeded 100,000 micrograms per cubic meter (ug/m³). For perspective, the Tier 2 commercial environmental screening level (ESL) published by the San Francisco Regional Water Quality Board for PCE in subsurface vapor is 67 ug/m³. In some cases there was vapor intrusion into occupied spaces (immediate threat), and in other cases there was imminent threat of vapor intrusion. In all the solvent cases reviewed there was either an immediate or imminent threat based on exceedingly high PCE and TCE concentrations in soil vapor beneath occupied buildings.

Awarding a SCAP Grant: Rule of Thumb 2

Rule of Thumb 2 - The location is disproportionately burdened by multiple sources of pollution and with population characteristics that make them more sensitive to pollution.

Over half the sites reviewed were categorized as disadvantaged or severely disadvantaged, a term used for water management and other public agency planning. The designation stems from digital map screening tools that help identify communities unequally challenged by multiple sources of pollution and with population characteristics that make them more sensitive to pollution. This information is available for sites on GeoTracker and is found under the” Community Involvement” tab on a site’s index page.

For sites that were not listed as disadvantaged or severely disadvantaged, it was unclear how this consideration was factored into the decision to award a SCAP grant; however, that does not mean the sites were not in a small or financially disadvantaged community.

Awarding a SCAP Grant: Rule of Thumb 3

Rule of Thumb 3 - The scope of work, duration, and cost of investigation and/or cleanup is reasonable and necessary to fix an immediate or imminent threat to human health, safety, and the environment.

This factor was difficult to discern from the available information. For all the sites reviewed, there was a lack of funds available to meet the regulatory directive and applicants had provided financial information, project scope of work, project duration, and project cost.

While the financial and project information were not available for our review, it was clear for most of the sites that contamination level or the location posed an immediate or imminent threat to human health (e.g, vapor intrusion), safety (e.g, risk of flooding), and the environment (e.g., poison fish). Since the environmental threat was immediate or imminent, action was necessary. SInce removing the immediate or imminent threat is beneficial and the cost is approved by the Board, the cost is reasonable.

Sites reviewed with SCAP grants had a scope of work, duration, and cost estimate that were necessary and reasonable to fix immediate or imminent threat to public health.

Awarding a SCAP Grant: Rule of Thumb 4

Rule of Thumb 4 - Applicants must show there is no other funding available to meet regulatory directives by providing financial information along with the project scope, duration, and cost estimate for investigation and/or cleanup. 

SCAP applicants were awarded grants because they showed there were no other sources of funding, including their own resources, to meet a regulatory agency directive. They showed there were no other sources of funding by providing financial information along with the project scope, duration, and cost estimate for investigation and/or cleanup. There is no broad consideration for this factor. A financial model is used by the Board as part of the assessment process. 

Awarding a SCAP Grant: Rule of Thumb 5

Rule of Thumb 5 - Applicants should engage in routine communication with SCAP and respond quickly and accurately to information requests.

Obviously, it’s hard to know on a site-by-site basis what other information the Board might consider in its deliberations. In some cases regulators make recommendations for a grant based on data not previously considered by the Board. The Board recommends routine communication and responding quickly and accurately to information requests.

Am I Eligible for a SCAP Grant

We looked at who a SCAP grant is for, what projects are eligible for a grant, and the five considerations weighed for awarding a grant. We have the experience to be your partner in the SCAP process. If you are interested in SCAP, contact us for a free consultation.

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Protecting Your Well from Contamination: Essential Tips and Strategies

What to do if your well is near a site where contamination was recently discovered

“I just received an alarming letter from my county environmental health department that our property well is near a site where contamination was recently discovered. Our well is our primary source for drinking water. What do we do? Should we be worried?”

First, try not to panic. We realize this can be concerning news, especially when the letter does not provide helpful information, or the language is overly technical and hard to understand. In most cases, private, domestic wells that serve a residential property are often installed to depths much deeper than the source of contamination and draw from a different underground water source (aquifer). To better understand this concept, which can feel abstract since we can’t see underground, let’s look at the graphic below which illustrates what this scenario might look like.

An aquitard is a layer of bedrock or other impermeable material that separates different aquifer zones. In most cases, an aquitard will prevent mixing between shallow and deeper aquifers. If the contamination affects the shallow aquifer, and a nearby well is drawing from a deeper aquifer, it’s not likely the same contamination will be found in the deeper aquifer because it’s separated by the barrier of the aquitard.

This graphic is only a generalized view, but it can put into perspective what might be the case for your well. To understand the situation more fully and what it means for your water source, you’ll want to review the installation records for your well. Once you have that information, you can compare your well with the depth of the contamination that was discovered. If you don’t have information on your well and don’t know the depth, the Department of Water Resources (DWR) may have a record of your well in their database. It is state law that geologic logs and pertinent information on all wells drilled in California be provided to DWR.

Next Steps if Your Well is Contaminated

Here are Your Next Steps:

1. Find your well information and review the design specifics.
2. Prepare a list of questions - here are some suggestions:
   • Should we stop drinking our water until it can be tested?
   • How did you determine this contamination is a threat to our water source?
   • Who will pay for testing?
   • Who is the consultant hired to mitigate the contaminated property?
   • How can I get records and status updates on the cleanup?
3. Call the person at the environmental health department who sent the letter for more information.
4. Call an environmental cleanup agency or consultant for an independent assessment of the situation.

What if the site has been identified as a source of contamination

When a site has been identified as a source of contamination, one of the first requirements from the oversight agency handling the case is to conduct a well survey, which is a tool to identify all the wells within a given radius from the source (usually ½ mile). The caseworker will analyze the survey and identify which wells could be affected by the contamination based on their construction and the distance from the source. The next step is usually obtaining permission from the well owners who could be affected to test the water from their well. 

Right now we are consulting for a property owner who had a small farm in the family. Underground storage tanks (USTs) were used at the farm for fueling equipment and vehicles. Although the USTs were removed in the 1980s, they leaked, and fuel was released into the surrounding soil and groundwater. A neighbor who lives in a house next door draws water from a private well on their property and is within proximity to the source of contamination. Although their well is constructed to draw water from a deep zone at 300 feet, their well has a screen that extends through the shallower aquifer where contaminants have been discovered in groundwater samples. We’ve tested samples from the well at least twice per year since 2007, and none of those samples showed traces of contaminants. It is the responsibility of the land owner or responsible person of the contaminated site to provide for testing, and relay the results to the well owner.

Close

It can be daunting to receive a letter with such alarming news, but arming yourself with information and asking the right questions will go a long way toward helping you feel safe about the integrity of your water. We have over 40 years of experience dealing with government agencies and cleaning up environmental messes - we can help you. Give us a call at (831) 475-8141 or click the link below for a free consultation.

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Understanding Phase I ESAs for Real Estate Buyers

"You know what a lemon car is, right? Nobody wants one. Nobody wants contaminated property either."

Why do Real Estate Buyers need a Phase I ESA?

In the simplest terms, the point of a Phase I Environmental Site Assessment (ESA) is to protect a prospective property buyer from getting a lemon of a property. You know what a lemon car is, right? Nobody wants one. Nobody wants contaminated property either. A Phase I ESA is designed to inform the buyer of what they’re getting into while providing liability protection.

Understanding Low-Threat Solvent Case Closure for PCE Contamination in California

For many of those managing investigation and cleanup of property contaminated with tetrachloroethylene (PCE) and other solvents in California, low-threat solvent case closure is the best but least understood option. This lack of clarity leads to frustration and mistrust. Let’s get familiar with low-threat solvent case closure and develop some general criteria beginning with the cleanup goal.

PCE Case Closure and Cleanup Goals: Reasonable Timeframe and Criteria

California State Water Resources Control Board (SWRCB) policy does not require that contamination is completely gone at the time of case closure; it specifies compliance with cleanup goals and objectives within a reasonable timeframe. This means that case closure can occur with contamination left in place as long as cleanup goals, such as relevant environmental screening levels (ESLs) or maximum contaminant levels (MCLs), are met in a reasonable timeframe. What defines a reasonable timeframe is ultimately decided by the regulatory oversight agency, but the decision considers the pace of natural cleanup mechanisms such as biodegradation. SWRCB closure orders for low-threat petroleum hydrocarbon sites state a reasonable time frame for plumes of a limited extent is multiple decades or longer, but expect more restrictions because PCE is less susceptible to natural cleanup mechanisms and has much lower ESLs. The general criteria for achieving cleanup goals are:

Criteria: Establish that natural mechanisms can reduce levels to cleanup goals and that contamination levels are at a point where natural mechanisms can reduce levels within a reasonable time frame.