OSWER/OSRTI Washington, DC 20460 

## N ATIONAL 

## P RIORITIES 

## L IST 

## (NPL)
***Final Site*** Septe mb er 2014 

### DELTA SHIPYARD Houma, Louisiana

Terrebonne Parish
 Site Lo cation: The former Delta Shipyar d is located at 200 Dean Court in southe a stern Houma, Terrebonne Parish, Louisiana. The facility is loc a ted in a mixed industrial and residential ar e a south of the city of Houma, Louisiana

.

 Site Hi

st or y: Delta Shipya rd was a cleaning and repa ir f ac i lity for small ca rgo boats, fi shing bo ats, and oil b ar ge s. Oi ly waste from the c le aning pro ce ss was stored in several unlined ea rthen pits used as evaporation ponds. Th e se pi ts were reported l y also used to dispose of oil fi e ld d rilling materia l. Delta Shipya rd w as o wn ed b y Delta Ironworks, Inc. The entire p rop erty consisted of 165 acres and was home to seven divi si ons of Delta Ironworks, including Delta Shipyard. Du ri ng the 1970s and 1980s, the propert y ch anged h ands through several me rge rs and sales. In January 201 2, the Louisiana Dep artment of Environmental Quality asked the EP A for a ss istance in ev alu ating th is site.

 Site Contamination/Contaminants: Wetlands are contaminated with a rs enic, antimony, anthr ace n e, barium, benzene, ca dmium, chrom iu m, ethylben zen e, fluo re n e, le ad, ma nganese, mercu ry, 2-methylnaphthalene, naphthalene, ph en anthrene, pyrene, o-xy le ne and m,pxy le ne to the surfac e water pa th way. In addition, thre e eva po ration pits containing gr ea te r than 30,000 cubic yards o f h azardous ma te rial a re lo ca ted in a wetland and may potentially re le ase waste to n ea rby wa te rways.

 Potential Im

p ac ts on Surrounding Community/Environment: L ar ge volu me s of waste remain on si te, and hazardous substan ce s h ave b een found in ground water, surface wate r and soi l. The closest residential property is located app ro xima te ly 400 feet we st of the op en pits. Without remediation of the sit e, additional re le ases to ground water, surface wate r and soil will continue.
 R es pon se Activities (t

o date): No re sponse ac tions have taken place.

 Ne ed for NPL Listi

ng: The si te w as referred to the EPA in 2012 from the state of Louisiana. Without l is ting the si te , contamination will continue to pose a risk to human health and the environment. Other federal and sta te c le anup programs were
ev aluated, but a re not viable a t this time. The EPA received a letter of support for placing this site on the NPL from the sta te

.

[The description of the site (release) is based on information available at the time the site was evaluated with the HRS. The description may change as additional information is gathered on the sources and extent of contamination. See 56 FR 5600, February 11, 1991, or subsequent FR notices.]

For more information about the hazardous substances identified in this narrative summary, including general information regarding the effects of exposure to these substances on human health, please see the Agency for Toxic Substances and Disease Registry (ATSDR) ToxFAQs. ATSDR ToxFAQs can be found on the Internet at http://www.atsdr.cdc.gov/toxfaqs/index.asp or by telephone at 1-888- 42 -ATSDR or 1- 888 -422-8737.