Question 1

What environmental concerns are specific to Nassau County properties?

Accepted Answer

Nassau County's industrial history and proximity to the sole-source Lloyd Aquifer create unique concerns. Common issues include petroleum contamination from gas stations and dry cleaners, legacy manufacturing contamination, and vapor intrusion from volatile organic compounds in groundwater.

Question 2

Why is the Nassau-Suffolk Aquifer System important for environmental assessments?

Accepted Answer

The Nassau-Suffolk Aquifer System is designated a sole-source aquifer by EPA, meaning contamination can directly impact drinking water. This designation triggers stricter regulatory oversight and often requires more comprehensive groundwater investigation for contaminated sites.

Question 3

How much does UST removal cost in Nassau County?

Accepted Answer

Underground storage tank removal in Nassau County typically costs $8,000-$20,000 for tank removal alone. If soil or groundwater contamination is discovered, remediation costs can range from $25,000 to over $200,000 depending on extent. Most gas station redevelopments require comprehensive site investigation.

Question 4

What is a NYSDEC spill number and when is it required?

Accepted Answer

A NYSDEC spill number is assigned when petroleum or hazardous substances are released to the environment. Once assigned, the spill file must be properly closed before property sale or redevelopment. Many older Nassau County commercial properties have open spill files requiring closure.

Question 5

How long does environmental remediation take on Long Island?

Accepted Answer

Remediation timelines vary significantly based on contamination type and extent. Simple UST closures with limited contamination may take 3-6 months. Complex groundwater remediation can take 2-5 years or more. NYSDEC oversight and reporting requirements add to timelines.

Question 6

How much does a Phase I ESA cost in Nassau County, NY?

Accepted Answer

A standard commercial Phase I Environmental Site Assessment in Nassau County, NY typically runs $2,400–$5,200. Property size, the volume of historical and agency records the reviewer has to pull, and rush turnaround are what move the number. We quote a fixed fee up front — no hourly surprises — and you can price your own scope with our cost estimator.

Question 7

What's included in a Phase I ESA?

Accepted Answer

An ASTM E1527-21 Phase I ESA includes a historical records and regulatory database review (Sanborn maps, aerial photography, city directories, and a full federal, state, and tribal database radius search), a site reconnaissance of the property and adjoining land uses, interviews with owners, occupants, and local agencies, and a written REC / HREC / CREC determination signed by the Environmental Professional of record. Where a recognized environmental condition is identified, we include scoped and budgeted Phase II recommendations. Asbestos, lead paint, mold, and radon are non-scope items under E1527-21 and are quoted separately when you need them.

Question 8

How long does a Phase I ESA take in Nassau County, NY?

Accepted Answer

Standard delivery is 10 business days from authorization, and most transactions close within the typical 2-3 weeks window once site access and records requests are factored in. Rush delivery in as little as one week is available when a closing date requires it, provided the site can be accessed promptly.

Question 9

Do Phase I ESA reports expire?

Accepted Answer

Yes. Under All Appropriate Inquiries (40 CFR Part 312), the database search, site visit, interviews, and records review stay viable for 180 days from the earliest component date. Between 180 days and one year the report can be updated rather than redone. Past one year, a new Phase I ESA is required for the report to support the CERCLA landowner liability defenses.

Scope	Typical range
Standard commercial Phase I ESA — NJ	$2,200–$4,500
Standard commercial Phase I ESA — NYC	$2,640–$5,625
Phase II ESA (soil / groundwater)	$8,000–$25,000

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