HomeMy WebLinkAbout[Untitled]_2017012011174374_3-6CALIFORNIA
Water Boards
TO: Shelton R. Gray Z�C=.
Senior Engineering Geologist
Douglas K. Patteson
Supervising WRC Engineer
Clay L. Rodgers
Assistant Executive Officer
FROM: John D. Whiting "J�4 "2)e
Engineering G Whiting
PG No. 5951
DATE: 10 February 20.16
EomuNo G. BROWN JR.
GOVERNOR
17% N MATTHEW RODRIQUEZ
SECRETARY FOR
QW; ENVIRONMENTAL PROTECTION
SUBJECT: CASE CLOSURE SUMMARY, UNDERGROUND STORAGE TANK RELEASE,
FORMER GARRIOT CROP DUSTING (K. L. AVIATION), 2014 SOUTH UNION
AVENUE, BAKERSFIELD, KERN COUNTY, RB CASE 6T15000909
Background
Site Summary
The underground storage tank (UST) release site (Site) is on the east side of South Union
Avenue, and south of Watts Drive, in an area of commercial properties at the Bakersfield
Municipal Airport (Bakersfield Air Park). The Site was most recently used to store junked
automobiles, and was formerly a fueling facility for private aviation and as part of an aerial
applicator facility (Garriot Crop Dusting). The UST system was constructed during 1978 under
permit from the Bakersfield Fire Department, Environmental Services Division (BFD), and stored
aviation and unleaded gasoline until 1988. The Kern County Assessor's Tax Number is
170-030-36.
One 10,000- gallon aviation gasoline UST and one 10,000 - gallon unleaded gasoline UST, two
fuel dispensers on an adjacent dispenser island and associated piping, were removed during
December 2000, under BFD permit. Analytical results of soil samples indicated concentrations
of total petroleum hydrocarbons as aviation gasoline (TPHav) up to 3,000 milligrams per
kilogram (mg/kg) in samples collected from 14 and 18 feet below ground surface (bgs), beneath
the northern end of the aviation gasoline (western) UST. Analytical results also indicated
concentrations of total petroleum hydrocarbons as gasoline (TPHg) at 3,300 mg/kg at the same
depths beneath the northern end of the adjacent (eastern) unleaded gasoline UST. TPHg was
also detected at 2,200 mg/kg at six feet bgs beneath the northern dispenser. Benzene was
d ' etected in one sample at less than 1 mg/kg. Toluene, ethylbenzene and xylenes were
detected in some of the 14 samples collected, at maximum concentrations of 110, 71 and
610 mg/kg, respectively. The fuel oxygenate methyl tertiary butyl ether (MTBE) was not
detected.
KARL E. LONGLEY ScD, P.E., CHAIR I PAMELA C. CREEDON P.E., BCEE, EXECUTIVE OFFICER
1685 E Street, Fresno, CA 93706 1 www. waterboards .ca.9ov /centralvalley
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