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Home My WebLink About01320001 - Fastrip Report of Findings - FINAL-- PHASE I ENVIRONMENTAL SITE ASSESSMENTS • PHASE II ENVIRONMENTAL SITE ASSESSMENTS • SITE REMEDIATION 215 West Dakota Avenue • Clovis, California 93612 • (559) 348-2200 • FAX (559) 348-2190 With Offices Serving the Western United States REPORT OF FINDINGS SOIL SAMPLING AND ANALYSIS FUEL STORAGE AND DELIVERY SYSTEM REMOVAL FASTRIP #3351/HOWARD’S MINI MARKET 3200 PANAMA LANE BAKERSFIELD, CALIFORNIA 93313 Project No. 01320001 February 12, 2020 Prepared for: Mr. Darren Kettler Project Manager Jaco Oil Company 3101 State Road Bakersfield, California 93308 DarrenK@jaco.com (661) 633-7531 Prepared by: Krazan-VEIR 215 West Dakota Avenue Clovis, California 93612 (559) 348-2200 -- PHASE I ENVIRONMENTAL SITE ASSESSMENTS • PHASE II ENVIRONMENTAL SITE ASSESSMENTS • SITE REMEDIATION 215 West Dakota Avenue • Clovis, California 93612 • (559) 348-2200 • FAX (559) 348-2190 With Offices Serving the Western United States 01320001 – Report of Findings – Fastrip #3351 REPORT OF FINDINGS SOIL SAMPLING AND ANALYSIS FUEL STORAGE AND DELIVERY SYSTEM REMOVAL FASTRIP #3351/HOWARD’S MINI MARKET 3200 PANAMA LANE BAKERSFIELD, CALIFORNIA 93313 INTRODUCTION Pursuant to your request, Krazan-VEIR has prepared this report of findings for the soil sampling and analysis conducted during the removal of four (4) underground storage tanks (USTs) and associated ancillary piping located at the referenced property (subject site). The work was conducted at the request of Jaco Oil (Client) and not by the request of a regulatory agency, however, the Bakersfield Fire Department – Prevention Services (BFD) provided oversight of the UST removal and soil sampling activities. SITE LOCATION AND DESCRIPTION The subject site is located on the northeast corner of the intersection of Panama Lane and Wible Road in Bakersfield, California (Figure 1). The subject site is associated with a street address of 3200 Panama Lane, Bakersfield, California 93313. According to the United States Geological Survey, 7.5 minute Gosford, California topographic quadrangle map, dated 2018, the subject site is located within the southeast quarter of Section 24, Township 30 South, Range 27 East, Mount Diablo Baseline and Meridian. The subject site is located within a commercial/retail area of Bakersfield. Panama Lane is located to the south of the subject site, Wible Road is located to the west and commercial/retail developments are located to the north and east of the subject site. Presently, the subject site is developed with a convenience store (Howard’s Mini Market) and automobile fueling station. Upon our arrival, excavation activities had already began, however, the fueling station consisted of two (2) fueling islands containing two (2) multi-product dispensers (MPDs) each, covered by a single canopy. The convenience store is located within the eastern portion of the subject site and the fueling station and USTs are located within the western portion of the subject site. Concrete curb, gutter and sidewalks are located along the western and southern borders of the site. The subject site is relatively level with no major changes in grade. SCOPE OF WORK Pursuant to the scope of work outlined in the January 13, 2020 Request for Proposal/Cost Estimate, Soil Sampling and Analysis, Fastrip, 3200 Panama Lane, Bakersfield, California 93313, prepared by Krazan- KV Project No. 013-20001 Page No. 2 Krazan-VEIR With Offices Serving the Western United States 01320001 – Report of Findings – Fastrip #3351 VEIR and authorized January 28, 2020 by the Client, the following scope of work was conducted (please refer to Figure 2 – Site Plan for referenced locations): General Activities • A site-specific health and safety plan (HASP) was prepared, including the appropriate level of personal protection equipment (PPE) for Krazan-VEIR personnel, to cover on-site field activities. • Site safety protocols, including appropriate level of PPE, were maintained as was a proper exclusion zone around the work area. • Soil samples were collected in laboratory-grade stainless steel sleeves. Subsequent to sample collection, the soil samples were immediately placed in an iced chest, labeled on a chain of custody and transferred to a State-approved laboratory under chain-of-custody protocol. • Constituents of concern investigated during the course of this assessment and their respective analytical test methods included the following: o Total petroleum hydrocarbons – carbon chain (TPH-cc) by EPA Test Method 8015, o Benzene, toluene, ethylbenzene, and xylenes (BTEX) and fuel oxygenates by EPA Test Method 8260, and o Total lead by EPA Test Method 6010. Field Observations On February 6, 2020, Ayler Excavation and Jaco representatives uncovered two (2) 12,000-gallon 87- octane unleaded gasoline USTs, one (1) 12,000-gallon premium unleaded gasoline UST, and one (1) 12,000-gallon diesel UST, all located within the southwest corner of the subject site property. At the time of Krazan’s arrival, the four (4) USTs were still in place and being filled with dry ice. The four (4) MPDs and ancillary product transfer and ventilation piping had been removed from the subject site. Stockpiled soils from the uncovered USTs were placed under the canopy covering the former dispenser locations and to the south of the USTs. The soils present in the excavation consisted of fine- to medium- grained silty sand. The bottom of the USTs were measured at approximately ten (10) feet below ground surface (bgs). The USTs were observed to be in very good condition with no visible holes and only exhibiting a slight rust coating. Subsequent to the removal of residual product in the USTs, approximately 250 pounds of dry ice was placed inside each UST. Soil Sampling Soil sampling activities were conducted under the direction of Mr. Shane Gardner with the BFD. As directed by Mr. Gardner, a total of 32 soil samples were collected in 16 locations (S-1 though S-16) as follows: • Two (2) soil samples were collected from beneath each end of each UST at two (2) and six (6) below the bottom of the USTs; KV Project No. 013-20001 Page No. 3 Krazan-VEIR With Offices Serving the Western United States 01320001 – Report of Findings – Fastrip #3351 • Two (2) soil samples were collected at two (2) and six (6) feet below the bottom of the under- dispenser containments (UDCs) of the MPDs; and • Soil samples were collected at two (2) and six (6) below the bottom of the ancillary product transfer and ventilation piping every 20 linear feet. As directed by Mr. Gardner, all of the soil samples (S-1 through S-16) were submitted for laboratory analysis for TPH-g, BTEX, and fuel oxygenates, and lead. APPLICABLE REGULATORY AGENCY REFERENCES Krazan’s evaluation of the results and findings associated with the soil sampling included referencing the November 2007 (Revised July 2019 [Rev. 2]) San Francisco Regional Water Quality Control Board’s (SFRWQCB) environmental screening levels (ESLs) referenced in the technical document titled, Screening for Environmental Concerns at Sites With Contaminated Soil and Groundwater. According to the RWQCB’s 2007 document, ESLs are considered to be conservative. Under most circumstances and within limits described by the Regional Water Quality Control Board (RWQCB), the presence of a chemical in soil, soil-vapor or groundwater at concentrations below the corresponding ESL (Residential Exposure, Commercial/Industrial Exposure or Construction Worker/Any Land Use Exposure) for the respective constituent can be assumed not to pose a significant, long-term (chronic) threat to human health and the environment. Additional evaluation will generally be necessary at sites where a chemical is present at concentrations above the corresponding ESL. Active remediation may or may not be required, however, depending on site-specific conditions and considerations. As stated by the RWQCB, the ESL document may be especially beneficial for use at subject sites with limited impacts, where the preparation of a formal environmental assessment may not be warranted or feasible due to time and cost constraints. REPORT OF FINDINGS The laboratory analytical results for soil analyses are summarized in Table I. Please refer to Appendix B for the laboratory analytical report. • Analytical results for the soil samples submitted for laboratory analysis for TPH-cc were reported as not detected (ND) above laboratory reporting limits (RLs) with the exception of the soil samples collected from approximately two (2) and six (6) feet bgs beneath the bottom of the ancillary product transfer and ventilation piping (soil sampling location S-6), which had reported concentrations of gasoline-range petroleum hydrocarbons (GRO) of 9,800 milligrams per kilogram (mg/kg) and 46 mg/kg, respectively and diesel-range petroleum hydrocarbons (DRO) of 880 mg/kg and 60 mg/kg, respectively. • Analytical results for the soil samples submitted for laboratory analysis for BTEX were reported as ND above laboratory RLs, with the exception of the soil samples collected from approximately two (2) and six (6) feet bgs beneath the bottom of the ancillary product transfer and ventilation piping (soil sampling location S-6). Please refer to Table I for a complete summary of reported BTEX concentrations. KV Project No. 013-20001 Page No. 4 Krazan-VEIR With Offices Serving the Western United States 01320001 – Report of Findings – Fastrip #3351 • A majority of the soil samples submitted for laboratory analysis for lead were reported as ND above laboratory RLs, however, a total of eight (8) soil samples (S1@2', S2@2', S3@2’, S4@2', S5@2', S5@6', S6@2', and S6@6') had reported lead concentrations ranging from 3.1 mg/kg to 6.4 mg/kg. Please refer to Table I for a complete summary of reported lead concentrations. • Analytical results for the soil samples submitted for laboratory analysis for fuel oxygenates were reported as ND above laboratory RLs. CONCLUSIONS Based on the findings in the field and the laboratory analytical report for the soil samples collected and analyzed from the subject site during this investigation, evidence of a significant impact of GRO, DRO and BTEX was identified only beneath the ancillary product transfer and ventilation piping located immediately north of the northernmost UST (soil sampling location S-6). However, the reported concentrations decreased significantly between the two (2) and six (6) foot soil sampling interval, therefore the vertical extent of impacted soils is presumed to be relatively shallow do not appear to pose a significant threat to current and anticipated beneficial uses of groundwater at this time. Additionally, analytical results for the remainder of the soil samples for GRO, DRO, BTEX, and fuel oxygenates were reported as ND above laboratory RLs suggesting the lateral extent of the impacted soils is minimal. However, the lateral and vertical extent of petroleum hydrocarbon constituent (PHC)-impacted soils is unknown. Eight (8) of the soil samples had reported concentrations of lead, however, the reported concentrations are significantly lower than the Construction Worker ESL of 2,700 mg/kg. The Construction Worker ESL was chosen due to the fact that the highest incidence of exposure to lead in on-site soils would be that of construction workers. Therefore, the reported lead concentrations do not appear to pose a significant threat to human health or the environment at this time, however, proper hygiene should be exercised when coming into contact with on-site soils. RECOMMENDATIONS Due to the unknown lateral and vertical extent of PHC-impacted soils, Krazan-VEIR recommends the following: • A minimum of five (5) feet of soil should be excavated from the sidewalls and bottom of the excavation in the location of soil sample S-6. • Field screening, utilizing visual and olfactory senses and a photoionization detector (PID), should be conducted prior to the collection of soil samples. • Subsequent to additional excavation and field screening, confirmation soil samples should be collected from the sidewalls and bottom of the new excavation and submitted for laboratory analysis for TPH-cc and BTEX. • The excavated stockpiled soils should be segregated from the existing stockpiled soils. • Composite soil samples should be collected from the excavated stockpiled soils that originated in the location of soil sample S-6 and submitted for laboratory analysis for TPH-cc and BTEX prior KV Project No. 013-20001 Page No. 5 Krazan-VEIR With Offices Serving the Western United States 01320001 – Report of Findings – Fastrip #3351 to reuse or off-haul. Significantly impacted stockpiled soils should be off-hauled and disposed according to state and federal rules and regulations. • A copy of this report should be provided to: Mr. Shane Gardner Bakersfield Fire Department - Prevention Services 2101 H Street Bakersfield, California 93301 (661) 626-3979 sgardner@bakersfieldfire.us LIMITATIONS This scope of work conducted at the subject site was not intended to characterize or define the extent of possible impact beneath the site; rather, this work was conducted to assess the presence or absence of significant concentrations of constituents of concern (COCs) associated with the removal of an automobile fuel storage and delivery system. The findings of this report were based upon the results of our field and laboratory investigations, along with the interpretation of subsurface conditions encountered during removal activities. Therefore, the data are accurate only to the degree implied by review of the data obtained and by professional interpretation. The excavation and sample locations were located in the field by third parties and available maps. Therefore, the location of the samples should be considered accurate only to the degree implied by the methods used to locate them. Chemical testing was done by laboratories certified by the State of California Department of Health Services. The results of the chemical testing are accurate only to the degree of care of ensuring the testing accuracy and the representative nature of the soil samples obtained. This subsurface investigation of the subject site has been limited in scope. This type of assessment is undertaken with the calculated risk that the presence, full nature and extent of contamination would not be revealed by methods employed. Therefore, no warranty is given, either expressed or implied, that hazardous material contamination or buried structures which would not have been disclosed through this investigation do not exist at the subject site. Therefore, the data obtained are clear and accurate only to the degree implied by the sources and methods used. KV Project No. 013-20001 Page No. 6 Krazan-VEIR With Offices Serving the Western United States 01320001 – Report of Findings – Fastrip #3351 CLOSING We appreciate the opportunity to be of service to Jaco Oil. If you have any questions or if we can be of further assistance, please do not hesitate to contact our office at (559) 348-2200. Respectfully submitted, KRAZAN-VEIR Martin Groth Professional Geologist No. 8477 MG/jb ATTACHMENTS: Figures Figure 1 – Vicinity Map Figure 2 – Site Plan Appendices Appendix A – Laboratory Report Ta b l e s TABLE I UST Removal and Soil Sampling Fastrip Facility Bakersfield, California February 6, 2020 Soil Sampling Results – TPH-cc, BTEX and MTBE (Concentrations are expressed in milligrams per kilogram [mg/kg]) Analyte* TPH-g TPH-d Benzene Toluene Ethylbenzene m,p– Xylene o–Xylene Total Lead Sample ID / ERSL S1@2’ ND ND ND ND ND ND ND 4.8 S2@2’ ND ND ND ND ND ND ND 3.1 S3@2’ ND ND ND ND ND ND ND 5.1 S4@2’ ND ND ND ND ND ND ND 4.1 S5@2’ ND ND ND ND ND ND ND 6.4 S5@6’ ND ND ND ND ND ND ND 5.6 S6@2’ 9800 880 47 570 190 670 240 3.9 S6@6’ 46 60 0.034 0.74 0.36 1.8 0.76 3.2 *Only the constituents detected are shown ND = Not detected above the laboratory reporting limit Fi g u r e s PANAMA LANE PANAMA LANE WI B L E R O A D G O L D E N S T A T E H I W Y WI B L E R O A D AK E R S R O A D AK E R S R O A D HARRIS ROAD CANAL CANAL GO L D E N S T A T E H I W Y 0 SCALE IN FEET (±) *ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE 750 1500 1 FEB. 2020 A. G.M. G. Figure No.Project No. Approved by: AS SHOWN Scale: Drawn by: Date: 013-20001 BAKERSFIELD FASTRIP 3200 PANAMA LANE BAKERSFIELD, CA 93313 SITE DEVELOPMENT ENGINEERS Offices Serving the Western United States Krazan-VEIRVICINITY MAP EXPLANATION SUBJECT SITE BOUNDARY NO PARKING CATCH BASIN PANAMA LN. WI B L E R D . HOWARD'S MINI MARKET GATED ENCLOSURE WITH A STAND ALONE ROOF S-16 S-15 S-10 S-9 S-7 S-8 S-13 S-14 12,000 GALLON 87-2UNLEADED 12,000 GALLON DIESEL 12,000 GALLON87-I UNLEADED 12,000 GALLONPREMIUM S-2 S-1 S-12S-11 S-3 S-4 STP STP STP STP STOCKPILE STOCKPILE FORMER MULTI-PRODUCT DISPENSERS EXISTING FUEL ISLAND CANOPY S-6S-5 0 SCALE IN FEET (±) *ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE 25 50 EXPLANATION EXISTING CONCRETE CURB & GUTTER SUBJECT SITE BOUNDARY SOIL SAMPLING LOCATION W/ SAMPLE NUMBER AS NOTED STREET RIGHT-OF-WAY 2 FEB. 2019 A. G.M. G. Figure No.Project No. Approved by: AS SHOWN Scale: Drawn by: Date: 013-20001 BAKERSFIELD FASTRIP 3200 PANAMA LANE BAKERSFIELD, CA 93313 SITE DEVELOPMENT ENGINEERS Offices Serving the Western United States Krazan-VEIRSITE PLAN S-7