Fort Walton Beach Ordinance — 1750 sale real property 109 Ready — reading text

The highest reported lead concentration was 260 ~ g/ i. Acetone was detected in one of thegroundwater i. Soil sampled at the site 1/ samples on one occasion at a concentration of 29 ~ g/ prior to removal contained total petroleum hydrocarbons ( as high as 22, 000 milligrams per kilogram [ mg/ kg]) and several polynuclear aromatic hydrocarbons PAH) includingacenaphthene, acenaphthylene, benzo( a) anthracene, b'enzo( a) 1,1 pyrene, dibenzo( a, h) anthracene, fluoranthene, indeno( l, 2, 3- 11 benzo( g, h, i) perylene, and pyrene. The " witches brew" from the c, d) pyrene, naphthalene, phenanthrene, i) lead ( 165, 000) , chromium ( 500) , barium fire training flash pan contained ( in /Jog/ 1, 500), benzene 5, 000), toluene ( 12, 700), ethyl benzene ( 1, 500), acetone ( 7, 800) and methyl isobutyl ketone ( 300) [ 9, 35, 36]. 1, 400), xy1enes ( drains and collected a 1990, the city sampled three storm water sewer I In June waste sample along the southern section of Ready Avenue evaluate odors noted to during the construction of a manufacturing facility. Sample resul~s for one of indicated contamination by petroleum consti tuents. The the storm drains l, I. contaminants detected include benzene ( 3, 610 / Jog/ toluene ( 6, 000 / i), and naphthalene ( 70 / Jog/ Jog/ i). i), ethyl However, benzene this ( 450 / Jog/ contamination i), is attributable to off -si te sources, possibly the Okaloosa County f,' apparently reportedly has 1 maintenance experienced yard, fuel which losses is located from in service near the storage storm tanks drain on the and property [ 26, 38]. J t',) RAl.P2 fINAL ( 1124/ 951 6  I 1, f! The supplemental preliminary contamination assessment was conducted at The the fire training area by the City from November 1992 through March 1993. supplemental assessment included the removal of an additional 237 tons of contaminated soil 7: ' of soil and groundwater. A head space' from two areas and confirmatory sampling determining in the location for the soil analysis for VOCs was completed to assist The soil samples collected were composited from the sides of the larger samples. total petroleum hydrocarbons ( TPHs) and II excavation area and analyzed for polynuclear aromatic hydrocarbons ( PAHs). One composite soil sample was collected obtained from from the bottom of the larger excavation area and one sample was Groundwater samples were collected from the smaller area and analyzed for TPHs. r:j four monitoring wells installed during previous investigations were analyzed for base neutral compounds and lead [ 75]. at the site and I':': i. i i The soil sample ranging from 5- 70 mg/ kg results larger presence of residual TPH indicated excavation in the the contamination area following the soil removal. The sample collected from the smaller excavation area indicated TPHs at 2 mg/ kg. 1 soil No contamination was detected in the in the samples. 1: 1 J No PAHs were detected groundwater samples exception of lead, which was detected with the the g/ xcavation area was at 4~ i. It should also be noted that groundwater from larger ~ sewer during the soil removal, pumped to the City of Fort Walton Beach sanitary I! however, no samples of the discharge water were 75] . collected during the assessment I:,' I,'" i I II I i I J i I I r1 I r. 1 t1~ 1 RAL.P2 FINAL (1 24195) 7  i. ! I~I I ENVIRONMENTAL SETTING Environmental conditions pertinent to this site inspection include site drainage, I.