SITE UPDATECentral and Camelback Water Quality Assurance Revolving Fund Site

March 2013

SITE DESCRIPTIONADEQ is investigating groundwater and soil con-

tamination at the Central and Camelback WQARFSite. The ADEQ WQARF program, which is alsoknown as state superfund, investigates and cleansup contaminated groundwater and soil sites acrossthe state. The Central and Camelback WQARF Site is locatedin central Phoenix. The area of study is bounded byMissouri Avenue to the North, Pierson Street to theSouth, Third Avenue to the West and First Street tothe East.

WHAT ARE THE CONTAMINANTS AT THE SITE?Groundwater at the site is contaminated with the

following: tetrachloroethene (PCE), a commonlyused solvent in the dry cleaning process;trichloroethene (TCE), a solvent primarily used inmetal degreasing and cleaning operations; cis-1,2-dichloroethene (cis-1,2-DCE), used to producesolvents and in chemical mixtures, benzene, acomponent of gasoline, and 1,2-dichlorothane(1,2-DCA), a lead scavenger which was used inleaded gasoline to reduce the effects of lead oxideformation in automobile engines.

HEALTH/WATER QUALITYAny risks associated with exposure to contami-

nated groundwater are principally through drinkingwater. The groundwater under the site is not used inthe public drinking water system. Without a directroute of exposure, such as drinking the groundwater,there should be no risk to you. NOTE: If your drinking water is provided by theCity of Phoenix, it meets all regulatory drinkingwater standards.

The City of Phoenix is required by law to providewater that meets all state and federal drinking waterstandards. The City of Phoenix conducts regular test-ing of your drinking water to ensure that standardsare met and to ensure that safe drinking water isdelivered to the community. For more informationconcerning your drinking water quality, pleasecontact the City of Phoenix Water Services at (602)

262-6251. If you are using a private well locatedwithin the boundary of the Central and CamelbackWQARF site and are concerned about the waterquality, please call Kevin Snyder, ADEQ ProjectManager, at (602) 771-4186 or, toll free at (800)234-5677, Ext: 771-4186.

For more information about possible healthissues, please call the Department of HealthServices, Office of Environmental Health, (602)364-3118 or (800) 367-6412.

SITE HISTORY

The Central and Camelback WQARF Site waslisted on the WQARF registry in 2000 due to thepresence of PCE in groundwater. Historically, severaldry cleaners operated in the area. Several otherbusinesses are known to have sold petroleum fuelin the area and experienced leakage from under-ground storage tanks. An early response action(ERA) was initiated at the site with the installation offour groundwater extraction wells intended toprevent the plume from spreading. A groundwaterpump and treat system began operating in 2003,initially pumping 90 gallons per minute. A soil vaporextraction (SVE) system was installed in November2007, to treat soil contamination at the formerMaroney’s Dry Cleaner location (southwest cornerof Central Avenue and Camelback Road).

Central and Camelback Groundwater Treatment Plant.

Publication Number: FS 13-05

SITE INVESTIGATION/CLEANUP ACTION

ADEQ continues to operate ERA that uses both agroundwater pump and treat system and a SVEsystem to treat contamination. The systems preventthe contaminated groundwater plume and associatedsoil vapors from migrating further away from thesource area. The SVE system is currently removingcontaminant vapors in soil from three vapor wells.To date the system has cleaned up approximately5,000 pounds of PCE. SVE draws gases from under-ground contaminated soils through the extractionsystem where the gases are treated and dischargedclean into the air.

For treated groundwater, ADEQ was granted arenewal for its National Pollutant DischargeElimination System permit for discharge to SaltRiver Project’s (SRP) Grand Canal. The permit, nowgoverned by the State of Arizona, allows for treated,clean groundwater to leave the site via the SRPirrigation system.

WHAT ARE ADEQ’S PLANS AT THIS SITE?

ADEQ plans to continue the remedial investiga-tion field work for the Central and Camelback Site.This involves determining the extent of the ground-water contamination and collecting the informationnecessary to evaluate areawide remediation andcleanup options. As part of the continuingRemedial Investigation (RI) ADEQ is planning toconduct soil vapor sampling along Central Avenuenorth of Camelback Road to investigate soil vaporsin the subsurface and to install two groundwatermonitor wells to investigate groundwater contami-nation. One well will be located by Colter Streetwest of Second Street and one will be locatedbyMedlock Drive east of Central Avenue. The draftRI report will be prepared to capture informationneeded to present cleanup options. These optionswill be outlined in a feasibility study. The draft RIreport will be made available for public comment.

FOR MORE INFORMATION:

A community advisory board (CAB) for the sitewas established in 2000. The primary purpose ofthe CAB is to advise ADEQ and the public of issuesand concerns related to the remediation of the site.The CAB consists of a diversified cross-section ofthe community and meets on a regular basis.Details of CAB meeting agendas and minutes canbe viewed at the ADEQ Web site. All CAB meetingsare open to the public.

Technical Information:Kevin SnyderADEQ Project Manager1110 W. Washington Street, Phoenix, AZ 85007 (602) 771-4186toll free at (800) 234-5677 Ext: 771-4186E-mail: kcs@azdeq.gov

Community InvolvementWendy FloodADEQ Project Manager1110 W. Washington Street, Phoenix, AZ 85007 (602) 771-4410toll free at (800) 234-5677 Ext: 771-4410E-mail: wv1@azdeq.govFax number (602) 771-4236

Hearing-impaired individuals may call our TDD line at (602) 771-4829.

Complete public files regarding this site are locatedat ADEQ. With 24 hours notice, an appointment toreview related documentation is available, Mondaythrough Friday from 8:30 a.m. to 4:30 p.m. atADEQ, Records Management Center, 1110 WestWashington Street, Phoenix, Arizona. Pleasecontact (602) 771-4380 to schedule an appoint-ment to review these documents.

For more information on this WQARF site or otherssites in Arizona, please visit the ADEQ Web site at:www.azdeq.gov. In the left hand column, click onWaste Programs, then Superfund/WQARF. Look forsite information and map link.

Para información en español sobre este sitio,comuniquese con Cecilia Montiel al (602) 771-4151.

Monitoring Well Water Level Measurement.