605-615 West 42nd Street, New York, NY 10036

Hell's Kitchen

Brownfield VOCs "Vapor Intrusion"

ExxonMobil Foundation and 605 W. 42nd Owner, LLC c/o The Moinian Group
Site Description[1] 
The site is 0.346 acres, identified as tax Block 1090, Lot 23. The site includes 605 West 42nd Street and 615 West 42nd Street and lies on the north side of West 42nd Street between 11th and 12th Avenues. The site included in the application consists of a three-story garage which is presently abandoned. It is now owned by the volunteer 605 West 42nd Owner LLC who acquired it from Verizon. After careful review, the Department determined that this parcel (605/615 West 42nd Street - the former Verizon garage) is eligible for the BCP. The applicant was informed of this by the DEE on 10/11/06. The surrounding parcels are currently used for a combination of commercial and residential purposes- such as United Parcel Service (UPS), the Riverbank West Apartment Tower, Mobil filling station (now closed), street-level parking lot and a New York City mounted patrol unit building. Prior uses of the site were a coal and coke yard, a can manufacturer and a metal manufacturer. The Sanitary Automatic Candy Corporation and the New York Telephone Company have also occupied the current buildings. Contaminants which are known or suspected to affect soil, groundwater and/or soil gas are petroleum, petroleum related VOCs, SVOCs and metals. As of this update, this site has completed investigations including a Phase 1, Phase 2 and a Remedial Action Plan which was prepared under a stipulation agreement with the Department but never executed. The stipulation agreement was initiated prior to the site's entry into the BCP. The volunteer has submitted a draft RIWP with associated Fact Sheet and CP Plan. The RIWP was approved June 22, 2007. An RAWP was submitted in July 2007. The associated fact sheet was released along with the RAWP for public review on July 6. The comment period ended on August 19. There were no comments received. This site poses a significant threat to the public health as determined by NYSDOH. The RAWP with Stipulations was approved by the Department on November 5, 2007. Remedial Construction started on December 10, 2007. Construction was stopped in September 2008 because of contractual problems. The volunteer is presently rebidding the contract.

Site Environmental Assessment
A Remedial Investigation Work Plan/Remedial Investigation Report was submitted on April 13, 2007. It was approved on June 22, 2007. Previous investigations have revealed the following contamination: • The VOC analytical results indicated elevated levels including numerous TAGM 4046 RSCO exceedances in soils in the vicinity of the two on-site source areas namely the location of three closed in place USTs and the former gasoline dispenser; • Elevated levels of naphthalene were detected in samples in the vicinity of the closed in place USTs; • Elevated levels of SVOCs in shallow soil were attributed to the presence of historic fill which lies 0.5-8 feet below the basement floor; • The types and concentrations of VOCs in the groundwater are indicative of petroleum contamination in the area of the USTs. There were TOGS exceedances in groundwater samples from wells in the vicinity of the former gasoline dispenser and closed in place USTs; • Soil gas analytical results revealed elevated concentrations of VOCs at all 14 sampling locations. Total VOC concentrations exceeded NYSDOH's background levels, as presented in Soil Vapor Intrusion Guidance, by orders of magnitude as high as 4. Remedial Construction started with Mobilization on December 10, 2007.`The remedial construction is consistent with the requirements of a Part 375 Track 1 cleanup and consists of: 1. Excavation and removal of soil/fill exceeding Track 1 SCOs; excavtion will occur to at least 20' bgs; 2. Removal and treatment of contaminated groundwater by way of construction dewatering; 3. Appropriate off-site disposal of all material from the site (solid and liquid) in accordance with all Federal, State and Local Rules and Regulations; 4. Collection and analysis of end-point samples to ascertain achievement of Track 1 SCOs 5. Implementation of a Soil Vapor Intrusion Monitoring Plan to ensure there exists no potential for soil vapor intrusion into new development.

Site Health Assessment
On-site soil is contaminated with petroleum related Volatile Organic Compounds (VOC's). The site is vacant and capped with concrete, therefore, direct contact exposure is not expected. Groundwater is contaminated with petroleum related VOC's, however, ingestion exposure is not expected since the area is served with public drinking water. Sub slab soil vapor on the site was found to have elevated levels of petroleum related VOC's. This would pose a potential for soil vapor intrusion and subsequent inhalation exposure if buildings are constructed on-site in the future. Vapor intrusion into off-site structures is a potential exposure pathway that needs to be investigated. Therefore, the site poses a significant threat to public health due to the potential for exposure to site related contaminats via vapor intrusion.

Contaminants of Concern
Type of Waste Quantity
Chrysene UNKNOWN

admin, Debra Hall



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