The former Olin Corporation (Olin) site is a 13-acre parcel located in southern Morgan Hill. Olin manufactured signal flares at the facility for about 32 years from 1956 to 1988. Standard Fusee leased the site and manufactured signal flares for seven years from 1988 to 1995. Potassium perchlorate was used in the manufacturing of flares by both Olin and Standard Fusee from 1956 to 1996. Perchlorate contamination at the site occurred primarily from an unlined evaporation pond that received wastes from the cleaning of the ignition material mixing bowls, on-site incineration of cardboard flare coatings with residues on them, and accidental spills. The perchlorate leached through the soil into the groundwater over the 40 years of operation and created a ten-mile long plume of perchlorate. Below are links that give an up-to-date account of the Central Coast Water Board's efforts to oversee the cleanup of perchlorate in the groundwater below Morgan Hill, San Martin, and Gilroy.

Olin FTP Site

Review the latest reports and workplans submitted by Olin.

View the Water Board's, City of Morgan Hill's, Olin's, Santa Clara Valley Water District's, and PCAG's most recent letters to each other.

• Water Board Correspondence With the City of Morgan Hill, the Santa Clara Valley Water District, and other Concerned Parties

View all of the Water Board's correspondence with various outside parties concerning the Olin site.

• Olin's Correspondence with the Water Board and other Concerned Parties

View the latest correspondence between Olin and the Water Board or other concerned parties.

Perchlorate Community Advisory Group (PCAG)

Olin Bottled Water Termination