Serving Nassau & Suffolk Counties
Allied All-City delivers thorough Phase I, II, and III environmental site assessments for Long Island properties — backed by NYSDEC licensing and 50+ years of local experience.
We hold New York State environmental contractor licensing, qualifying us to assess, sample, and remediate regulated sites.
Phase I through Phase III handled by one team — no handoffs, no gaps, no competing priorities between firms.
Decades of work across Nassau and Suffolk gives us unmatched familiarity with Long Island's environmental history and conditions.
Allied All-City holds county-level certifications for environmental work throughout Long Island's two primary jurisdictions.
A thorough environmental assessment from Allied All-City gives buyers, developers, and property owners the clarity and documentation they need to move forward with confidence.
Every benefit above is delivered on every job we take.
Get a Free QuoteOur licensed crew serves Nassau and Suffolk County with same-day availability and transparent pricing on every job.
We review historical records and inspect the site to identify environmental conditions that may require further investigation.
Targeted sampling confirms whether contamination is present, defines its extent, and generates the data needed for remediation planning.
We design and execute the remediation plan, coordinate with NYSDEC, and prepare the final closeout documentation for your records.
A Phase I Environmental Site Assessment is a non-invasive review of historical records and a physical site walk-through intended to identify recognized environmental conditions — signs that contamination may be present or has occurred. No sampling is conducted. A Phase II assessment adds soil, soil vapor, and groundwater sampling to confirm or rule out contamination identified during Phase I. A Phase III assessment takes the findings of Phase II and moves into active remediation — designing and executing a cleanup plan to address confirmed contamination and achieve regulatory closure with the NYSDEC.
Phase I assessments are most commonly required as part of commercial real estate transactions, particularly when a lender is involved. Most institutional lenders require a Phase I as a condition of financing for commercial or industrial property purchases. Phase I assessments are also commonly ordered by buyers seeking environmental due diligence before closing, by developers evaluating sites for new construction, and by property owners responding to regulatory inquiries or pending permit applications. In some cases, municipalities and government agencies require Phase I assessments as part of grant or funding programs tied to brownfield redevelopment on Long Island.
Yes. Allied All-City performs Phase I Environmental Site Assessments in accordance with ASTM International Standard E1527-21, which is the current standard practice for Phase I ESAs recognized by lenders, attorneys, and regulatory agencies. The ASTM standard defines the scope of the records review, site reconnaissance, interviews, and reporting that constitutes "all appropriate inquiry" for purposes of federal liability protection under CERCLA. Reports prepared by Allied All-City are formatted to meet the requirements of lenders, legal counsel, and regulators commonly involved in Long Island real estate transactions.
Phase I assessment timelines vary depending on the complexity of the site's history and the availability of historical records, but most straightforward commercial or residential Phase I assessments on Long Island can be completed within two to three weeks from authorization. Phase II assessments take longer because they involve field sampling, laboratory analysis, and data interpretation. Depending on the scope of the sampling program and lab turnaround times, a Phase II typically ranges from three to six weeks. Allied All-City will provide you with a realistic timeline specific to your site during the initial consultation.
Yes — and this is one of the key advantages of working with Allied All-City. Because we are a licensed NYSDEC environmental contractor, we can take a site all the way from Phase I records review through Phase III remediation without transferring your project to another firm. When the same team that conducted the Phase II sampling also designs and executes the remediation, there is no gap in institutional knowledge, no time lost in project hand-off, and no risk of a new contractor misinterpreting the site data. We coordinate directly with the NYSDEC throughout Phase III and handle all reporting through final site closeout.
Buyers and their attorneys are among the most frequent clients, seeking due diligence protection before closing on commercial, industrial, or mixed-use properties. Lenders and banks routinely require Phase I assessments as a condition of commercial real estate financing. Developers evaluating sites for new construction order assessments to understand environmental risk before committing to a project. Sellers sometimes commission Phase I assessments proactively to identify and address issues before listing. Municipalities order assessments for brownfield redevelopment initiatives. Allied All-City works with all of these client types across Nassau and Suffolk Counties regularly.
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