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EnvirOmega Consultants Site Assessment Report 1 SITE ASSESSMENT • REPORT FOR n Hubbard Contracting Co. Facility 46 Encinitas Boulevard Encinitas, California PREPARED BY EnvirOmega Consultants 16732 Palmero Drive San Diego, California October 31, 2000 EnvirOmega Consultants 16732 Paimero Drive San Diego, Califomia 92128 (858) 676-0046, Fax (858) 676-0750 October 31, 2000 County of San Diego Department of Environmental Health Site Assessment and Mitigation Program P.O. Box 129261 San Diego, California 92112-9261 Attention: Ms. Marisue Crystal Subject: Transmittal - Well/Boring Log Submittal (Permit No. W98748) Don Hubbard Contracting 46 Encinitas Boulevard, Encinitas, California Unauthorized Release No. H03635-001 Assessor's Parcel No. 760-165-0100 EnvirOmega Consultants Project No. EOC-98-065 Ms. Crystal: Pursuant to the requirements of Monitoring , 200 aWell and Borin Construction and nd San Diego County Code, Sections 67.440 and it No. W98748, approved d on on January27 67.421, and the Califomiartea Water of the EOC prepared report aenti led SitenvirOmega Consultants (EOC) is submitting herein, tha Assessment Report for Don Hubbard Contracting Co. Mr. Rod Reeve, the responsible l Californa registered geo ogist eTh st the report is signed by M report includes details of the advancement of 11 borings and the collection and analysis of soil and groundwater samples. The following pertinent information is included: (1) Background information concerning the site (2) A Vicinity Map (3) A Site Plan (4) Logs of 11 Borings (5) Laboratory Data Sheets 2000 The well permit application submitted Cond tionss encountered at the sit a idunng he drill ng operat ons EOC on January necessitated a check for the cost of advancing 9 borings on the ith Count permitting necessitated the advancement of two additional borings. In accordance w Y requirements, we have included a check for $180.00 for the cost of the two additional borings. Should you have any questions concerning the contents of this transmittal, or we may be of further service, please contact the undersigned at your convenience at (858) 676-0046. Sincerely, j "522 David A. Eminhizer Environmental Scientist EnvirOmega Consultants Attachments cc Mr. Scott Weldon, SAM Program Mr. Don Hubbard EnvirOmega Consultants 16732 Palmero Drive San Diego, California 92128 Phone (858) 676-0046, Fax (858) 676-0750 , October 31, 2000 Don Hubbard Contracting Co. 1015-A Linda Vista Drive San Marcos, CA 92069 Attention: Mr: Don Hubbard Subject: Site Assessment Report Don Hubbard Contracting Co. Facility 46 Encinitas' Boulevard, Encinitas, California h Unauthorized Release No.-H03635-001 EnIvirOmega Consultants Project No. EOC-98-065 i , l Dear Mr. Hubbard: i At your request, representing the, Don Hubbard Contracting Co. (Hubbard), "EnvirOmega 9 Consultants (EOC)`has performed environmental services for Hubbard facility formerly located at 46 Encinitas Boulevard in Encinitas, California. ' The following Site Assessment Report,summarizes the results of the removal of underground storage tanks (USTs) from the site, the subsequent removal (at that time) of approximately 170 cubic' yards (224 tons) of contaminated soil from the area of the removed USTs, and the completion during March and April 2000 of assessment activities on the site. In accordance with a SAM approved Post-Tank Removal Work Plan, on December 3, 1998, following the removal of two 1000 gallon USTs'from the site, Hubbard excavated approximately 170 cubic yards of contaminated soil from the areas of'the two removed USTs. When it became apparent that the excavation of soil should be discontinued, Hubbard backfilled each excavation with gravel and clean soil and eventually had the contaminated soil transported from the site under non-hazardous-waste manifest to Candelana Environmental in Anza, California for treatment and disposal. The County of San Diego Site Assessment and Mitigation Program (SAM) then issued Unauthorized Release No., H03635-001 for the site and directed the performance of site, assessment activities. During March and April 2000, after receiving approval from SAM for the proposed work,and receiving approval from the State Underground Storage Tank Cleanup Fund, EOC advanced 11 borings on the site and collected sail and groundwater samples from each boring. Analysis of the soil and, groundwater samples confirmed that, while most of the. petroleum: hydrocarbon- impacted soil was removed from the areas of the removed USTs, some minor petroleum hydrocarbon impact to the groundwater was still present in the areas directly downgradient of each of the two excavations and in the area of a removed oil trap/sump, but that the contaminants were not present at concentrations of concern. In general, the remaining Mr. Hubbard October 31, 2000 Page 2 petroleum hydrocarbon impact measured in the soil and groundwater at the site appears to be minor and not likely to pose a threat to public health or a useable groundwater resource. Consistent with SAM requirements and based on the results of the field effort performed by EOC on the Hubbard site, EOC has concluded that site closure is appropriate in this case and that SAM should issue a "no further action" letter for the site. If there are any questions concerning the contents of this report, or if we may be of further service, please contact us at (858) 676-0046. Sincerely, 9 GEp~O 00 R.. fv c~ David A. Eminhizer od Reev No. 4941 Environmental Scientist Registered Geologist EnvirOmega Consultants No. 4941 TFOF CA4Y Enclosure: Site Assessment Report cc: Mr. Scott Weldon, County of San Diego SAM I I I I I I Don Hubbard Contracting Co. Facility Project No. EOC-98-065 1 TABLE OF CONTENTS 1 1.0 INTRODUCTION 1 1 1.1 Site Location ....................................................1 1.2 Background Summary 1 1.3 Soil Mitigation at Time of UST Removal 2 ' 1.4 Oil Trap/Sump 2 2.0 TECHNICAL APPROACH AND SERVICES PROVIDED 3 2.1 Technical Approach ..............................................3 2.2 Assessment Services Provided 4 .4 ~ 3.0 FIELD ACTIVITIES . 1 3.1 Advancement of Exploratory Borings 4 1 3.1.1 Gasoline UST Area 5 1 1 3.1.1.1 Boring Advancement, Soil Sampling and Analysis 5 I 3.1.1.2 Groundwater Sampling and Analysis 6 1 3.1.2 Diesel UST Area 7 3.1.2.1 Boring Advancement, Soil Sampling and Analysis 7 3.1.2.2 Groundwater Sampling and Analysis 8 1 3.1.3 Oil Trap/Sump Area 9 1 3.1.3.1 Boring Advancement, Soil Sampling and Analysis 9 1 3.1.3.2 Groundwater Sampling and Analysis 9 1 3.2 Disposition of Drill Cuttings and Oil Trap/Sump Rinsate 10 4.0 SITE GEOLOGY AND HYDROGEOLOGY 10 4.1 Geology .......................................................10 4.2 Hydrogeology ..................................................10 1 5.0 SUMMARY, CONCLUSIONS AND FUTURE SITE USE ISSUES 12 1 5.1 Summary ..............12 5.2 Conclusions ...................................................13 1 I 6.0 FUTURE SITE USE ISSUES 14 1 7.0 RECOMMENDATION .................................................15 i 1 8.0 REPORT LIMITATIONS 15 1 EnvirOmega Consultants i October 31, 2000 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 TABLE OF CONTENTS (continued) 10 r Figures 1 Vicinity Map 2 Site Plan r 3 Soil Analytical Results and Contaminant Contours r 4 Groundwater Analytical Results, Contaminant Contours and Elevations 5 Topographic Map r Tables 1 Summary of Analytical Results, Tank Removal Soil Samples M 2 Summary of Analytical Results, Oil Trap/Sump Soil Sample M 3 Summary of Analytical Results, Boring Soil Samples 4 Summary of Analytical Results, Borehole Groundwater Samples 5 Summary of Analytical Results, EPA Method 8260 and EPA Method 8270 6 Summary of Groundwater Depths and Elevations 1 Appendices A Underground Storage Tank System Closure Report, Tank Removal Laboratory Data and r Soil and Liquid Manifests B Work Plan for Environmental Services and SAM Approval Letter C Well Permit Application D Boring Logs E Laboratory Data r r r EnvirOmega Consultants ii October 31, 2000 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 1.0 INTRODUCTION r At the direction of Mr. Don Hubbard, representing the Don Hubbard Contracting Co. (Hubbard), EnvirOmega Consultants (EOC) has provided post-tank removal mitigation and site assessment services for the subject site formerly located at 46 Encinitas Boulevard in Encinitas, California. The location of the site is presented on the Vicinity Map, Figure 1. r Many years prior to its use as a heavy equipment storage and construction yard, the subject site was operated as a sewage treatment facility by the City of Encinitas. Approximately 30 years ago, Hubbard leased the site from the City of Encinitas for use as a construction yard. During the term of the lease, Hubbard installed and operated two 1000 gallon r underground storage tanks (USTs) on the site. One UST stored gasoline and the other stored diesel fuel. An oil trap/sump was also located on the site. The approximate locations of the USTs and the sump are depicted on Site Plan, Figure 2. ' The removal of the two USTs, the fuel dispensers, the oil trap/ sump and petroleum contaminated soil, and the advancement of 11 borings on the site by EOC are the subject of ' this report. ' 1.1 Site Location r The Hubbard business, a heavy equipment and construction operation, was located at the northwest corner of the intersection of Encinitas Boulevard and Interstate 5 in Encinitas, California. A survey of the area indicates that Interstate 5 is located east of the site with commercial businesses including restaurants, automobile service stations and a grocery store ' located east of Interstate 5; Encinitas Boulevard is located south of the site with a restaurant and vacant land located south of Encinitas Boulevard; Vulcan Avenue, railroad tracks and State Highway 101 are located west of the site, and private residences are located north of the site. The general layout of the site is depicted on the Figure 2. 1.2 Background Summary r On December 3, 1998, two USTs, one storing gasoline and one storing diesel, were removed from the site. Each 1,000 gallon UST was removed from a separate excavation with two soil samples collected from each excavation under the direction of Mr. Scott Weldon, County of San Diego Site Assessment and Mitigation Program (SAM) specialist assigned to the site. While neither soil sample collected from the excavation created by the removal of the unleaded gasoline UST contained detectable concentrations of total petroleum hydrocarbons (TPH), some soil staining and petroleum hydrocarbon odors were noted in the excavation. Of the two soil samples collected from the excavation created by the removal of the diesel UST, r one soil sample contained 3,200 milligrams per kilogram (mg/kg) of TPH diesel and the other did not contain a detectable concentration of TPH gasoline or diesel. During the UST removal activities, Mr. Weldon noted the presence of a "small amount of diesel floating on surface of groundwater" in the excavation created by the removal of the diesel UST. A copy of the "Underground Storage Tank System Closure Report" prepared by Mr. Weldon is provided in Appendix A. The analytical results of the tank removal effort are summarized on Table 1, Summary of Analytical Results, Tank Removal Soil Samples with the associated laboratory data sheets provided in Appendix A. EnvirOmega Consultants 1 October 31, 2000 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 1.3 Soil Mitigation at Time of UST Removal 1 Following the removal of the USTs and Mr. Weldon's departure from the site, but with Mr. Weldon's concurrence and in accordance with an approved "post tank removal work plan", EOC assisted Hubbard with the excavation of approximately 160 cubic yards of mixed clean and contaminated soil from the excavation created by the removal of the gasoline UST. Approximately 10 cubic yards of soil were also removed from the diesel UST, primarily to clean any free product from the groundwater in the excavation. During the excavation of the soil, it became apparent that the soil removal activities should be discontinued and that the excavations should be backfilled. This conclusion was based primarily on the fact that some r hydrocarbon odors continued to emanate from the gasoline UST excavation and some soil staining was still apparent on the excavation sidewalls. Additionally, the "post-tank removal work plan" limits the amount of soil that can be excavated following the tank removal effort and the removal of that quantity of soil was attained without resolution of the extent of the contaminant impact to the soil. It should be noted that while soil removal was discontinued, the observed soil conditions did not necessarily suggest extensive contamination. Instead, EOC, with Mr. Hubbard's concurrence, concluded that to avoid the possibility of removing r excessive amounts of soil, soil removal should be stopped and replaced with an assessment effort, including soil borings. Within a day of the removal of the tanks, Hubbard placed gravel, filter fabric and clean soil (to the ground surface) in each excavation. In April 1999, under non-hazardous waste manifest, Dupree Trucking transported the stockpiled soil to Candelaria r Environmental for disposal. Copies of the soil manifests are provided in Appendix A. r Based on the analytical results from the tank removal effort, SAM issued Unauthorized Release No. H03635-001 for the site and directed Mr. Hubbard to proceed with site assessment activities. 1.4 Oil Trap/Sump ' Subsequent to the removal of the USTs, during December 1999, Hubbard removed an oil 1 trap/sump from the south central area of the site, at the location depicted on Figure 2. On r December 22, 1999, EOC visited the site and inspected the concrete oil trap/sump that had ' been removed from the ground by Hubbard. The sump, measuring approximately 4.5 feet ' square by 7 feet high was topped with a metal grate and contained water contaminated with petroleum hydrocarbons. EOC indicated to Hubbard representatives that proper disposal of the sump and its contents was required by the Department of Environmental Health. Hubbard ' representatives indicated they would transport the sump to their facility in San Marcos, where they would pump the liquid into a 55-gallon drum, clean the sump with a surfactant and pump that liquid into the drum and the concrete sump would be crushed and recycled. Hubbard ' completed the disposal of the sump and liquid as planned and Alternative Disposal Inc. ' transported the liquid to a licensed recycling facility (Innovative Waste Utilization) in Phoenix, Arizona. A copy of the soil/liquid manifest is provided in Appendix A. On January 20, 2000, at the request of Hubbard, EOC visited the site to survey a stockpile of r soil reportedly generated during the removal of the sump. Approximately 25 cubic yards of soil was observed stockpiled at the west end of the site. It appeared that the soil may have been mixed with other clean soil by unknown parties. EOC collected a soil sample (HC-soil-1120) from the stockpile and submitted the sample for TPH and total recoverable petroleum hydrocarbon (TRPH) analysis. Analysis of the soil sample indicated the presence of gasoline range TPH (not identified as gasoline) of 32 mg/kg, diesel range TPH (not identified as diesel) ' of 390 mg/kg, TPH in carbon range of C25-40 of 800 mg/kg and TRPH of 1300 mg/kg (TRPH EnvirOmega Consultants 2 October 31, 2000 Don Hubbard Contracting Co Facility Project No. EOC-98-065 result is likely represents a total of the TPH results). The analytical results from the oil trap/sump sampling effort are summarized on Table 2, Summary of Analytical Results, Oil Trap/Sump Soil Samples with the associated laboratory data sheets provided in Appendix A. A few days after collecting the soil sample, EOC transmitted the results to Hubbard. At that time, Hubbard indicated that someone other than Hubbard had mixed, moved, or otherwise disturbed the soil stockpile and that none of the soil from the sump area could be located. The final disposition of this soil is unknown, but since the City of Encinitas and others apparently use the area as a staging location for green recycling and other soil and specific waste storage activities, it is impossible to determine the current status of this soil. 2.0 TECHNICAL APPROACH AND SERVICES PROVIDED The following sections describe the planned approach and the scope of services for the Hubbard assessment activities. 2.1 Technical Approach Based on the above information and conversations with Mr. Hubbard and Mr. Weldon, EOC prepared and submitted a work plan, dated June 21, 1999, to SAM. The work plan proposed that soil borings be advanced in the two areas on the site where the USTs were formerly located and that soil and groundwater samples be collected from each of the borings and submitted to the laboratory for analysis. The purpose for the collection and analysis of the samples was to complete the delineation of the extent of the petroleum hydrocarbon impact to the soil and the groundwater at the site. Since petroleum hydrocarbons were released from both of the fuel systems formerly located on the site, delineation of the impact in each area was necessary to satisfy regulatory requirements. Mr. Weldon reviewed the work plan and in a letter dated July 1, 1999, Mr. Weldon approved the work plan. Following the removal of the oil trap/sump in December 1999, Mr. Weldon requested that an additional boring be advanced in the area of the removed oil trap/sump. Copies of the work plan and the SAM approval letter are provided in Appendix B. In conjunction with delineating the extent of the petroleum hydrocarbon impact to the soil and groundwater at the site, as proposed by EOC and approved by Mr. Weldon, EOC estimated the approximate volume of contaminated soil in the area of each removed UST and calculated the average contaminant concentration remaining in the soil in each area. Additionally, EOC estimated the areal extent of the contaminant impact to the groundwater in each area and reported the maximum concentration of each target analyte for the groundwater samples collected from each area. Figure 2 presents the locations for the eleven soil borings advanced on the site (note that eight borings were proposed). Borings B1, B2, B3, B4 and 61A were advanced in the area of the former location of the gasoline UST. Borings B5, B6, B7, B8 and 138A were advanced in the area where the diesel UST was located. Boring B9 was advanced in the area of the removed oil trap (sump). Groundwater Designation. Based on a review of the Water Quality Control Plan, San Diego Basin (Region 9), the site is located in the Batiquitos Hydrologic Subarea (HSA) of the San Marcos Hydrologic Area of the Carlsbad Hydrologic Unit (Hydrologic Unit Basin Number 4.51). While groundwater in the Batiquitos HSA possesses potential beneficial uses for municipal, agricultural and industrial purposes, the site is located west of Interstate 5 and is therefore exempt from these beneficial use designations. Additionally, the subject site is located EnvirOmega Consultants 3 October 31, 2000 1 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 ' approximately 2800 feet east of the Pacific Ocean and therefore not subject to any other ocean or bay standards. EOC concluded that the site is located in an area not possessing any existing or potential beneficial uses for groundwater and proceeded with the assessment effort accordingly. 2.2 Assessment Services Provided EOC provided environmental mitigation and assessment services on behalf of Mr. Hubbard as proposed in the work plan dated June 21, 1999 (in Appendix B), detailed in the SAM approval letter dated July 1, 1999, and requested by Mr. Weldon. These services are briefly summarized below. The scope of services included Tasks I through Task IV. Task I - Prefield Activities, included the preparation of the work plan and community health and safety plan, a ' site specific health and safety plan and a boring/well permit application (copy of the boring/well permit application is provided in Appendix C); Task II - Boring Advancement included the advancement of 11 soil borings (copies of the boring logs are provided in Appendix D), as ' required by SAM and the collection of soil and groundwater samples from the borings, and Task III - Report Preparation details the results of the field activities and presents a recommendation for site closure. 3.0 FIELD ACTIVITIES The field services performed by EOC included the advancement of exploratory borings, the ' collection and analysis of soil and groundwater samples from the borings and the ' measurement of groundwater elevations. Sampling and Analysis. Soil samples were collected from the boreholes by driving a t stainless steel split spoon sampler through hollow stem augers, removing the soil from the spoon and placing it in laboratory prepared jars with proper labels and delivering the soil samples to the on-site mobile laboratory provided by Mobile One Laboratories Inc. (Mobile ' One). The sampler was cleaned with an Alconx solution and rinsed with potable water prior to each use. Borehole groundwater samples were collected from temporary wells with casing and screen using VOSS disposable bailers. / Mobile One performed on site and fixed laboratory analysis of soil and groundwater samples. Selected soil samples and all of the groundwater samples were submitted for analysis of TPH using the Department of Health Services (DHS) TPH Method. Selected soil samples and all of the groundwater samples were analyzed for benzene, toluene, ethylbenzene and xylenes ' (BTEX) and methyl t-butyl ether (MTBE) using EPA Methods 8020 or 8260, as appropriate. Note that the detection limit for TPH by the DHS-TPH Method is 10 mg/kg. Several soil samples and one groundwater sample were analyzed for TRPH using EPA Method 418.1. 3.1 Advancement of Exploratory Borings Boring Advancement and Soil and Groundwater Sample Collection. EOC and West Hazmat (drilling contractor) met on the site on March 13, 2000 and April 5, 2000 to complete drilling and soil and groundwater sampling activities. Prior to commencing with the field ` activities, EOC personnel explained the health and safety plan and communicated the project goals to all field personnel. The following borings were advanced using a CME-85 drill rig equipped with hollow-stem augers. EnvirOmega Consultants 4 October 31, 2000 ` Don Hubbard Contracting Co. Facility Project No. EOC-98-065 A total of 11 borings were advanced in three areas of the site; the gasoline UST area, the diesel UST area and the oil trap/sump area at the locations depicted on Figure 2. The results of the analysis of the soil samples are depicted on Figure 3, Soil Analytical Results and ' Contaminant Contours, with the boring soil sample results summarized on Table 3, ' Summary of Analytical Results, Boring Soil Samples. The results of the analysis of the groundwater samples collected from temporary wells installed in each boring are depicted on Figure 4, Groundwater Analytical Results, Contaminant Contours and Elevations, with the ' groundwater sample results summarized on Table 4, Summary of Analytical Results, t Borehole Groundwater Samples. Copies of the boring logs are provided in Appendix D and copies of the laboratory data sheets are provided in Appendix E. 3.1.1 Gasoline UST Area Five soil borings were advanced in the area of the former location of the gasoline UST (Tank 1), at the locations depicted on on Figures 2 and 3. Soil and groundwater samples ' were collected from each boring. Soil sample results are provided on Table 3, groundwater sample results are provided on Table 4 and copies of the laboratory data sheets are provided in Appendix E. ' 3.1.1.1 Boring Advancement, Soil Sampling and Analysis Boring HC-B1 (B1) was advanced (on March 13, 2000) to a depth of 10.5 feet below ground t surface (bgs) at a location approximately 10 feet southwest of the former location of the ' gasoline UST (Tank 1) excavation as depicted on Figure 2. Five soil samples, B1-1 (4.0 feet bgs), B1-2 (5.5 feet bgs), B1-3 (7.0 feet bgs), B1-4 (8.5 feet bgs) and B1-5 (10.0 feet bgs) were collected from the boring with four of the soil samples subjected to TPH analysis. Soil sample B1-2 contained a TPH gasoline range (not identified as gasoline) concentration of 5,200 mg/kg and TPH diesel range (not identified as diesel) concentration of 1,800 mg/kg. ` Soil samples B1-3, B1-4 and B1-5 did not contain TPH gasoline or diesel above the detection limit of 10 mg/kg. Soil sample B1-2 was also subjected to analysis for TRPH, BTEX and MTBE and organic lead. A TRPH concentration of 4090 mg/kg detected in this soil sample (sample 61-2) is most likely the result of the TPH concentrations present in the sample, since the TRPH analysis measures all organics. MTBE and benzene were not present above their r respective detection limits of 0.1 mg/kg and 0.5 mg/kg. Toluene, ethylbenzene and xylenes t were present at 1.5 mg/kg, 25 mg/kg and 59 mg/kg, respectively. Organic lead was not present above the detection limit of 1.0 mg/kg. The organic lead result is provided in Table 5, Summary of Analytical Results, Organic Lead, EPA Method 8260 and EPA Method 8270. Boring HC-B2 (B2) was advanced (on March 13, 2000) to a depth of 15.0 feet bgs at a location approximately 10 feet northwest of the former location of the Tank 1 excavation. Four soil samples, B2-1 (6.0 feet bgs), B2-2 (7.0 feet bgs), B2-3 (9.0 feet bgs) and B2-4 (13.0 feet bgs) were collected from the boring with two of the soil samples subjected to TPH analysis. Neither soil samples B2-1 or B2-2 contained TPH gasoline or diesel above the detection limit of 10 mg/kg. ' Boring HC-B3 (B3) was advanced (on March 13, 2000) to a depth of 15.0 feet bgs at a location approximately 17 feet east of the former location of the Tank 1 excavation. Four soil samples, B3-1 (6.0 feet bgs), B3-2 (7.0 feet bgs), B3-3 (9.0 feet bgs) and B3-4 (13.0 feet bgs) were N EnvirOmega Consultants 5 October 31, 2000 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 r collected from the boring with two of the soil samples subjected to TPH analysis. Neither soil samples B3-1 or B3-2 contained TPH gasoline or diesel above the detection limit of 10 mg/kg. t Boring HC-B4 (B4) was advanced (on March 13, 2000) to a depth of 15.0 feet bgs at a location r approximately 10 feet south-southeast of the former location of the Tank 1 excavation. Four soil samples, 134-1 (6.0 feet bgs), B4-2 (7.0 feet bgs), B4-3 (9.0 feet bgs) and 134-4 (13.0 feet bgs) were collected from the boring with two of the soil samples subjected to TPH ' analysis. Neither soil samples 134-1 or B4-2 contained TPH gasoline or diesel above the r detection limit of 10 mg/kg. After completing the excavation and sampling of borings B1 through B4, EOC reviewed the results and concluded that the advancement of one or more additional borings to the southwest of boring B1 would be required, depending on the results obtained. This conclusion ` was based on the fact that a TPH gasoline range concentration (at 5,200 mg/kg) and diesel r range concentration (at 1,800 mg/kg) were detected in a soil sample collected from boring B1 and that the presumed direction of groundwater flow was to the southwest, in the direction of a nearby stream channel. To complete the contaminant delineation effort, boring HC-131A (B1A) was advanced (on March 13, 2000 and April 5, 2000) to a depth of 15.0 feet bgs at a location approximately 22 feet southwest of the location of Boring B1 as depicted on Figures 2 and 3. Eight soil samples, B1A-1 (4.0 feet bgs), B1A-2 (5.5 feet bgs), B1A-3 (7.0 feet bgs), 131A-4 (8.5 feet bgs), B1A-5 (10.0 feet bgs), B1A-6 (11.5 feet bgs), B1A-7 (13.0 feet bgs) and B1A-8 (14.5 feet bgs) were collected from the boring with three of the soil samples subjected ' to TPH analysis. None of the soil samples analyzed (B1A-2, B1A-5 and B1A-6) contained TPH gasoline or diesel above the detection limit of 10 mg/kg. Soil sample B1A-6 was also subjected to MTBE and BTEX analysis. This soil sample did not contain MTBE or BTEX above their respective detection limits. 3.1.1.2 Groundwater Sampling and Analysis To facilitate the collection of representative groundwater samples, temporary 2 inch diameter ' PVC well casing and screen, and filterpack sand was placed in each borehole (borings B1, B2, B3, B4 and B1A) during the drilling performed on March 13, 2000. After waiting several hours for the groundwater to stabilize, several gallons of groundwater were bailed from wells B1, B2, B3 and B4. After again waiting for the wells to recharge (approximately one hour for each well), a VOSS disposable bailer was used to collect a borehole groundwater sample from the temporary wells installed in each of the four borings. Groundwater could not be collected on March 13, 2000 from the temporary well installed in boring B1A due to the absence of ' measurable groundwater in the well. This condition was thought to be the result of low permeability soil in the area of boring B1A. When groundwater was not observed in the well on several subsequent monitoring efforts, on April 5, 2000, EOC and West Hazamt extended ! the depth of boring B1A from 10.5 feet bgs to15 feet bgs and installed a new casing and r screen in the borehole. Later in the day on April 5, 2000, after bailing a few gallons of groundwater from the well, EOC used a disposable bailer to collect a groundwater sample from the temporary well installed in boring B1A. Note that groundwater was encountered at slightly ' deeper than 10.5 feet bgs, a few inches deeper than the boring was advanced on March 13, 2000. ' Borehole groundwater samples HC-B1-Water, HC-B2-Water, HC-B3-Water, and HC-B4-Water were collected on March 13, 2000 from temporary wells installed in borings B1, B2, B3 and B4, 1 respectively. Borehole groundwater sample HC-B1A-Water was collected on April 5, 2000 1 EnvirOmega Consultants 6 October 31, 2000 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 from a temporary well installed in boring HC-B1A. Analysis of these borehole groundwater samples indicated that samples HC-B2-Water, HC-B3-Water, HC-B4-Water and HC-B1A-Water did not contain concentrations of TPH gasoline or diesel, MTBE or BTEX above their respective detection limits. Groundwater sample HC-B1-Water contained TPH at 9,500 micrograms per liter (Ng/L), MTBE at 66 pg/L (by EPA Method 8260), benzene at 15 pg/L, ethylbenzene at 150 pg/L and xylenes at 330 pg/L. Toluene was not present above the detection limit of 5.0 pg/L. Note that the gasoline concentration was in the gasoline range but was not identified as gasoline. 3.1.2 Diesel UST Area Five soil borings were advanced in the area of the former location of the diesel UST (Tank 2), at the locations depicted on Figures 2 and 3, with soil and groundwater samples collected from each boring. Soil sample results are provided on Table 3, groundwater sample results are provided on Table 4 and copies of the laboratory data sheets are provided in Appendix E. 3.1.2.1 Boring Advancement, Soil Sampling and Analysis Boring HC-B5 (B5) was advanced (on March 13, 2000) to a depth of 10.5 feet bgs at a location approximately 17 feet east of the former location of the diesel UST (Tank 2) excavation. Five soil samples, 654 (4.0 feet bgs), B5-2 (5.5 feet bgs), B5-3 (7.0 feet bgs), B5-4 (8.5 feet bgs) and B5-5 (10.0 feet bgs) were collected from the boring with one of the soil samples (collected from the capillary zone) subjected to TPH analysis. Soil sample B5-2 did not contain a detectable TPH concentration. Boring HC-B6 (B6) was advanced (on March 13, 2000) to a depth of 10.5 feet bgs at a location approximately 18 feet northeast of the former location of the Tank 2 excavation. Five soil samples, B6-1 (4.0 feet bgs), B6-2 (5.5 feet bgs), B6-3 (6.5 feet bgs), 664 (8.5 feet bgs) and B6-5 (10.0 feet bgs) were collected from the boring with two of the soil samples subjected to TPH analysis. Neither soil samples B6-2 or B6-3 contained a detectable TPH concentration. Boring HC-B7 (B7) was advanced (on March 13, 2000 and continued on April 5, 2000) to a depth of 15.0 feet bgs at a location approximately 10 feet west-northwest of the former location of the Tank 2 excavation. Eight soil samples, B7-1 (4.0 feet bgs), B7-2 (5.5 feet bgs), B7-3 (7.0 feet bgs), B7-4 (8.5 feet bgs) B7-5 (10.0 feet bgs), B7-6 (11.5 feet bgs), B7-7 (13.0 feet bgs) and B7-8 (14.5 feet bgs) were collected from the boring with five of the soil samples subjected to TPH analysis. Four of the tested soil samples (B7-2, B7-3, B7-5 and B7-6) did not contain TPH gasoline or diesel above the detection limit of 10 mg/kg. Soil sample 674 did contain TPH diesel at 670 mg/kg but did not contain TPH gasoline above the detection limit of 10 mg/kg. Soil sample B7-6, also subjected to MTBE and BTEX analysis, did not contain MTBE or BTEX above their respective detection limits. Boring HC-B8 (B8) was advanced (on March 13, 2000 and continued on April 5, 2000) to a depth of 15.0 feet bgs at a location approximately 10 feet south-southwest of the former location of the Tank 2 excavation. Eight soil samples, B8-1 (4.0 feet bgs), B8-2 (5.5 feet bgs), B8-3 (7.0 feet bgs), B84 (8.5 feet bgs) B8-5 (10.0 feet bgs), B8-6 (11.5 feet bgs), B8-7 (13.0 feet bgs) and B8-8 (14.5 feet bgs) were collected from the boring with four of the soil samples subjected to TPH analysis. Three of the tested soil samples (B8-4, B8-5 and B8-6) did not contain TPH gasoline or diesel above the detection limit of 10 mg/kg. Soil sample B8-3 contained TPH diesel at 5,200 mg/kg but did not contain TPH gasoline above the detection EnvirOmega Consultants 7 October 31, 2000 i Don Hubbard Contracting Co. Facility Project No. EOC-98-065 limit of 10 mg/kg. Soil sample B8-3 was also subjected to analysis for polynuclear aromatic hydrocarbons (PNAs) by EPA Method 8270. Only two of the target analytes were measured above the detection limit; fluorene at 640 micrograms per kilogram (Ng/kg) and phenanthrene at 680 pg/kg (the detection limit for each of these two compounds is 400 pg/kg). The EPA Method 8270 results are provided in Table 5. After completing the excavation and sampling of borings B5 through B8, EOC reviewed the results and concluded that the advancement of one or more additional borings to the southwest of boring B8 would be required, depending on the results obtained. This conclusion was based on the fact that TPH diesel was detected in a soil sample collected from boring B8 (at 5,200 mg/kg) and that the presumed direction of groundwater flow was to the southwest, in the direction of a nearby stream channel. To complete the contaminant delineation effort, boring HC-B8A (B8A) was advanced (on March 13, 2000 and April 5, 2000) to a depth of 15.0 feet bgs at a location approximately 37 feet south-southwest of the location of Boring B8, as depicted on Figures 2 and 3. Eight soil samples, B8A-1 (4.0 feet bgs), B8A-2 (5.5 feet bgs), B8A-3 (7.0 feet bgs), B8A-4 (8.5 feet bgs) B8A-5 (10.0 feet bgs), B8A-6 (11.5 feet bgs), B8A-7 (13.0 feet bgs) and B8A-8 (14.5 feet bgs) were collected from the boring with four of the soil samples subjected to TPH analysis. None of the tested soil samples (B8A-2, B8A-3, B8A-5 and B8A-6) contained TPH gasoline or diesel above the detection limit of 10 mg/kg. Soil sample B8A-6, subjected to analysis for MTBE and BTEX, did not contain MTBE or BTEX above their respective detection limits. 3.1.2.2 Groundwater Sampling and Analysis To facilitate the collection of representative groundwater samples, temporary 2 inch diameter PVC well casing and screen, and filterpack sand was placed in each borehole (borings B5, B6, B7, B8 and B8A) during the drilling performed on March 13, 2000, as was discussed earlier in the gasoline UST section. After waiting several hours for the groundwater to stabilize, several gallons of water were bailed from wells B5 and B6. After again waiting for the wells to recharge (approximately one hour for each well), a VOSS disposable bailer was used to collect a borehole groundwater sample from the temporary wells installed in each of the two borings. Groundwater could not be collected on March 13, 2000 from the temporary wells installed in borings B7, B8 and B8A due to the absence of measurable groundwater in the wells. As was suspected with boring B1A in the gasoline UST area, this condition was thought to be the result of low permeability soil in the area of the borings. When groundwater was not observed in the wells on several subsequent monitoring efforts, on April 5, 2000, EOC and West Hazamt extended the depth of borings B7, B8 and B8A from 10.5 feet bgs to15 feet bgs 3 and installed a new casing and screen in each of the boreholes. Later in the day, after bailing a few gallons of water from each well, EOC used a disposable bailer to collect a groundwater sample from the temporary well installed in each boring. Note that groundwater was encountered at slightly deeper than 10.5 feet bgs, a few inches deeper than the borings were advanced on March 13, 2000. Borehole groundwater samples HC-B5-Water and HC-B6-Water were collected on March 13, 2000 from temporary wells installed in borings B5 and B6, respectively. Borehole groundwater samples HC-B7-Water, HC-B8-Water and HC-B8A-Water were collected on April 5, 2000 from temporary wells installed in borings B7, B8 and 8A, respectively. Analysis of these five borehole groundwater samples indicated that none of the samples contained TPH gasoline or diesel, MTBE or BTEX above their respective detection limits. t EnvirOmega Consultants 8 October 31, 2000 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 3.1.3 Oil Trap/Sump Area I One soil boring was advanced in the area of the former location of the oil trap/sump, at the location depicted on Figures 2 and 3, with soil and groundwater samples collected from the boring. Soil sample results are provided on Table 3, groundwater sample results are provided on Table 4 and copies of the laboratory data sheets are provided in Appendix E. 3.1.3.1 Boring Advancement, Soil Sampling and Analysis Boring HC-139 (139) was advanced (on March 13, 2000 and continued on April 5, 2000) to a depth of 15.0 feet bgs at a location approximately 60 feet southwest of the former location of the Tank 1 excavation and 10 feet southwest of the former location of the oil trap/sump. Eight soil samples, 139-1 (4.0 feet bgs), 139-2 (5.5 feet bgs),'B9-3 (7.0 feet bgs), B9-4 (8.0 feet bgs) B9-5 (10.0 feet bgs), 139-6 (11.5 feet bgs), 139-7 (13.0 feet bgs) and B9-8 (14.5 feet bgs) were collected from the boring with three of the soil samples subjected to TPH and TRPH analysis. None of the tested soil samples (139-4, B9-5 and B9-6) contained TPH gasoline or diesel above the detection limit of 10 mg/kg. Soil samples 139-5 and 139-6 did not contain TRPH above the detection limit of 10 mg/kg while soil sample 139-4 did contain TRPH at 65 mg/kg. Soil sample 139-6, also subjected to analysis for MTBE and BTEX. did not contain MTBE or BTEX above their respective detection limits. 3.1.3.2 Groundwater Sampling and Analysis Temporary 2 inch diameter PVC well casing and screen, and filterpack sand was placed in borehole B9 during the drilling performed on March 13, 2000. Since groundwater was not observed in the well on March 13, 2000, no groundwater sample could be collected. After not observing groundwater in the well on several subsequent monitoring efforts, on April 5, 2000, EOC and West Hazmat extended the depth of the boring from 10.5 feet bgs to15 feet bgs and installed a new casing and screen in the borehole. Later in the day, after bailing a few gallons of water from the well, EOC used a disposable bailer to collect a groundwater sample from the temporary well installed in the boring. Borehole groundwater sample HC-139-Water was collected on April 5, 2000 from a temporary well installed in the boring. Analysis of this borehole groundwater sample indicated that TPH gasoline or diesel was not present above the detection limit of 500 pg/L and BTEX compounds were also not present above their respective detection limits. TRPH was present at 600 pg/L (detection limit of 500 pg/L). MTBE was present at 370 pg/L and chloromethane was present at 12 pg/L, as tested by EPA Method 8260. The results of the EPA Method 8260 analysis are provided in Table 5. EOC compared the groundwater analytical results from the borings advanced in the area of the former location of the Tank 1 excavation with the groundwater analytical results from boring B9. Consider that the groundwater in boring 131 contained TPH gasoline at 9500 pg/L, MTBE at 66 pg/L and benzene at 15 pg/L (groundwater from borings B2, B3, B4 and 61A did not contain detectable concentrations of TPH, MTBE or benzene), while the groundwater in boring B9 did not contain TPH above the detection limit of 500 pg/L or benzene above the detection limit of 0.2 pg/L, but did contain MTBE at 370 pg/L. It is EOC's opinion that the MTBE found in the groundwater in boring B9 is anomalous in that the MTBE present may be the result of MTBE vapor migrating from the oil trap/sump previously located on the site and not from any release that occurred from Tank 1. It has been documented that even when no EnvirOmega Consultants 9 October 31, 2000 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 release of petroleum hydrocarbons has occurred at gasoline service stations, some MTBE has been observed in the soil and the groundwater. Since MTBE is highly volatile, the source of this MTBE has been linked to the migration of the MTBE vapor. Since the oil trap/sump and some surrounding soil has been removed, EOC concludes that the minor amount of MTBE that remains in the groundwater in the area of boring B9 is not present at a volume or concentration of concern. r 3.2 Disposition of Drill Cuttings and Oil Trap/Sump Rinsate On September 12, 2000 four 55-gallon drums of soil and one 55-gallon drum of liquid rinsate r were transported from the site by Alternative Disposal Inc. and delivered to a licensed recycling ' facility (Innovative Waste Utilization) in Phoenix, Arizona. A copy of the soil/liquid manifest is provided in Appendix A. r 4.0 SITE GEOLOGY AND HYDROGEOLOGY 1 The geology and hydrogeology concerning the site are presented below. 1 1 4.1 Geology I A review of the US Geological Survey Encinitas, California 7.5 Minute Series Quadrangle 1968 I (photorevised 1975) indicates that the Hubbard site is located at the following estimated I coordinates: I Longitude 117°, 17', 57" west, Latitude 33°, 02', 57" north Township T.13.S, Range RA.W, Section 15 The subject site is located at an elevation of approximately 55 feet mean sea level (MSL). A i drainage/stream channel (unnamed creek), enclosed in a concrete pipe in most of the area of i the site, is located approximately 175 feet south of the former locations of Tanks 1 and 2. An unlined drainage/stream channel that empties into the concrete pipe is located approximately 190 feet east of the former location of Tank 1. The subject site is located approximately 2800 feet east of the Pacific Ocean. A survey of the topography of the area of the site indicates that the area of former locations of the USTs is nearly flat with a very slight slope that trends gently to the southwest. The area north of the former location of the USTs is sloped to the south at approximately five percent and the area to the south and west of the former location of the USTs is generally sloped to the west. A steep hillside rises to the south, south of Encinitas Boulevard and also to the east, in the direction of Interstate 5. The topography of the area of the site is presented on the Topographic Map, Figure 5. Soils encountered during the performance of the soil excavation and boring activities consisted of alluvial soils including mixed dark yellowish brown to black fine sand, clayey fine sand, sandy clay and some silt to the maximum depth explored of approximately 15.0 feet bgs. Some organic soils including grasses, wood and bark consistent with the environment in the area of a stream channel were encountered in some of the borings. Most of the soils were fine sands and clayey fine sands. The logs for the borings are provided in Appendix D. 4.2 Hydrogeology Groundwater Designation. As stated previously, the site is located in the Batiquitos HSA, Hydrologic Unit Basin Number 4.51. While groundwater in the Batiquitos HSA possesses EnvirOmega Consultants 10 October 31, 2000 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 potential beneficial uses for municipal, agricultural and industrial purposes, the site is located west of Interstate 5 and is therefore exempt from these beneficial use designations. Additionally, the subject site is located approximately 2800 feet east of the Pacific Ocean and ' therefore not subject to any other ocean or bay standards. Conclusion, the site is located in an area not possessing any existing or potential beneficial uses for groundwater. Additionally, no groundwater production wells were observed during a survey of the area surrounding the site, within a radius of 1000 feet. Site Groundwater Elevations. Groundwater was observed in the UST excavations following the removal of Tanks 1 and 2 but the depth was not recorded. During the drilling and sampling activities, EOC used an electronic water level meter to measure the depth to groundwater in t the temporary well casings installed in each of the borings. On March 13, 2000, the depth to groundwater was measured in the wells installed in borings 131 (7.0 feet below top of casing [BTOC]), B2 (6.9 feet BTOC), B3 (6.3 feet BTOC), B4 (7.7 feet BTOC), B5 (7.9 feet BTOC) ' and B6 (7.8 feet BTOC) and the casing and screen was then removed and the boreholes were filled with bentonite grout. Since groundwater was not present in the wells installed in borings 131 A, B7, B8, 138A and B9, groundwater elevations could not be measured in these wells at this ' time. As previously detailed, EOC returned to the site several times following the March 13, 2000 drilling effort to monitor for the presence of groundwater in the remaining borings. When ' groundwater was not observed on these days, EOC returned to the site on April 5, 2000 and extended the depth of the borings to 15 feet bgs and reinstalled new casing and screen in the borings. In conjunction with the sampling, EOC measured the depth to groundwater in borings B7, B8, 138A and B9 using an electronic water level meter. EOC also surveyed the top of casing elevation of the temporary wells installed in each boring. The depth to groundwater was measured in the wells installed in borings 131A (9.92 feet BTOC), B7 (11.04 feet BTOC), B8 (10.96 feet BTOC), 138A (10.05 feet BTOC) and B9 (11.25 feet BTOC). The elevation of a ' grate associated with the nearby drainage channel was also surveyed relative to the casings 1 installed in the borings. The depth to groundwater below the grate located above the drainage pipe was 16.05 feet. Note that the grate appears to cover a concrete sump with the drainage pipe entering the sump at a depth of approximately 8 feet below the top of the grate. This ' suggests that the water level measured at this location may not be representative of the true depth to groundwater in this area. The depths to groundwater in all of the borings and the calculated elevation for the groundwater in borings B7, B8, 138A and B9 and the drainage ' channel grate are summarized in Table 6, Summary of Groundwater Depths and ' Elevations. The depth to groundwater on the site was measured at between approximately 6.3 feet and ' 11.3 feet bgs. Based on the calculation of relative groundwater elevations in five of the borings, as surveyed with a rod and transit, and measured with an electronic water level meter, the direction of groundwater flow beneath the site is to the southwest beneath the site at a rate of approximately 0.01 feet per foot to 0.02 feet per foot. Borings 61 and 131A were advanced ' downgradient of the former location of the Tank 1 excavation and borings B8 and 138A were advanced downgradient of the former location of the Tank 2 excavation. While borings 131 and B8 contained petroleum hydrocarbon impacts to the soil and groundwater, borings 131A and ' 138A did not contain petroleum hydrocarbon impacts to the soil and groundwater. Note that boring 131A was advanced approximately 22 feet southwest of boring B1 and boring 138A was advanced approximately 37 feet southwest of boring B8. Borings 131A and 138A were each located approximately 90 feet to 100 feet north of the drainage channel. EnvirOmega Consultants 11 October 31, 2000 1 1 1 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 1 Extent of Groundwater Contamination. Petroleum hydrocarbon impact to the groundwater 1 likely remains in three areas of the site. TPH gasoline, MTBE, benzene, ethylbenzene and 1 xylenes are present in the groundwater in the area of the former location of Tank 1. While no 1 petroleum hydrocarbon contamination was detected in the borings advanced adjacent to the former location of Tank 2, EOC has estimated that since some diesel was observed in the 1 groundwater beneath Tank 2 at the time of its removal, some minor petroleum hydrocarbon contamination may remain in the groundwater immediately adjacent to the former location of 1 Tank 2. TRPH at slightly above the detection limit and an estimated minor amount of MTBE are present in the groundwater in a small area of the former location of the oil trap/sump. 1 1 The estimated areal extent of the contaminant impact to the groundwater in the areas of the 1 former location of Tanks 1 and 2 and the oil trap/sump are depicted on Figure 4. 1 5.0 SUMMARY, CONCLUSIONS AND FUTURE SITE USE ISSUES 1 Field activities and future site use issues are discussed in this section. I I 5.1 Summary Field activities, including the removal of two USTs and the post-tank removal excavation and transport of approximately 172 cubic yards (224 tons) of soil and the collection and analysis of 1 soil and groundwater samples from 11 borings advanced on the site summarized below: 1. Two single-walled, steel USTs, used for the storage of gasoline and diesel fuel, and the associated piping and fuel dispensers were removed from the site on December 3, 1998. I During the SAM directed soil sampling, a release of gasoline and diesel fuel into the soil was noted in the two separate excavations. In December 1999, a concrete oil trap/sump I was removed from the site. Slight TPH gasoline and diesel and TRPH was noted in the soil removed from the area of the oil trap/sump. It should be noted that the gasoline and I diesel concentrations identified in the soil from the oil trap/sump were in the gasoline and diesel ranges but were not identified as gasoline or diesel. 1 I 2. Hubbard removed approximately 172 cubic yards (224 tons) of contaminated soil from the area of the removed USTs. The soil was transported to Candelaria Environmental in Anza, 1 California for treatment and disposal. I 3. The excavations created by the removal of the USTs, oil trap/sump and the contaminated soil were backfilled to the ground surface with gravel and clean soil, as appropriate. I I 4. Eleven borings were advanced on the site to depths ranging between 10.5 feet and I 15.0 feet bgs. Groundwater was measured at depths ranging between approximately 6.3 feet and 11.3 feet bgs in boreholes advanced on the site. I I 5. Only one of the 32 soil samples collected (and analyzed) from the 11 borings contained detectable TPH in the gasoline range (but not identified as gasoline) at 5200 mg/kg I (sample 131-2). Three of the 32 soil samples collected (and analyzed) from the 11 borings I contained TPH diesel at 670 mg/kg (sample 137-1), 1800 mg/kg (sample B1-2) and I 5200 mg/kg (sample 138-3). Two of the four soil samples collected (and analyzed) from two of the borings contained TRPH concentrations of 65 mg/kg (sample 69-4) and 4090 mg/kg 1 (sample 61-2). The TRPH result from sample 131-2 likely represents the result of the I presence of TPH gasoline and diesel present in this soil sample. Six soil samples were I EnvirOmega Consultants 12 October 31, 2000 I 1 r Don Hubbard Contracting Co. Facility Project No. EOC-98-065 r analyzed for the presence of MTBE and BTEX. Toluene, ethylbenzene and xylenes were r present in only one of the six soil samples collected from the borings and MTBE and r benzene were not present in any of the six soil samples. The estimated areal extent of the contaminant impact to the soil in the areas of the former locations of Tanks 1 and 2 and the r oil trap/sump are depicted on Figure 3. r 6. Only one of the 11 groundwater samples collected from the borings contained a detectable r concentration of TPH gasoline (groundwater sample HC-B1-Water contained 9500 pg/L of gasoline range TPH, not identified as gasoline). None of the groundwater samples r contained TPH diesel above the detection limit of 500 pg/L. Groundwater sample r HC-B9-Water, the only groundwater sample subjected to TRPH analysis, contained a TRPH concentration of 600 pg/L. Only one of the 11 groundwater samples contained r benzene (groundwater sample HC-B1-Water contained 15 pg/L of benzene). Only two of r the groundwater samples contained detectable concentrations of MTBE, sample r HC-B1-Water at 66 pg/L and HC-B9-Water at 370 pg/L. Note that while the groundwater from boring B1 contained 66 pg/L of MTBE, the gasoline range TPH result was 9500 pg/L. r While the groundwater from boring B9 contained 370 pg/L of MTBE, gasoline and diesel r range TPH was not present above the detection limit of 500 pg/L and the BTEX r compounds were also not present above their respective detection limits. The MTBE concentration present in the groundwater sample collected from boring B9 is most likely an r anomalous result and should not be considered a concern. The estimated areal extent of r the contaminant impact to the groundwater in the areas of the former locations of Tanks 1 r and 2 and the oil trap/sump are depicted on Figure 4. r 7. Temporary well casing and screen and filterpack sand was removed from each of the r borings and the borings were backfilled with bentonite grout. r 8. Groundwater measurements performed on the site indicated that the depth to groundwater r beneath the site ranged between approximately 6.3 feet bgs and 11.3 feet bgs. The calculation of groundwater elevations indicated that groundwater flows to the southwest r beneath the site at a rate of approximately 0.01 feet per foot to 0.02 feet per foot. r 9. No groundwater production wells were observed during a survey of the area surrounding r the site, within a radius of 1000 feet and the Pacific Ocean is located approximately r 2800 feet west of the site. r 5.2 Conclusions r r Based on the information presented in this report as summarized above, EOC concludes the r following: r 1. Two USTs formerly associated with the dispensing of gasoline and diesel fuel and an oil r trap/sump have been removed from the site, along with approximately 224 tons r (or 170 cubic yards) of petroleum hydrocarbon contaminated soil. The removal of the r USTs, fuel dispenser islands and the contaminated soil constitutes source removal. r 2. While isolated areas of petroleum hydrocarbon contamination remain on the site, in the r area of the removed USTs and the oil trap/sump, this soil is generally present at varying depths in the vadose soils and was not generally observed in the capillary or saturated r r EnvirOmega Consultants 13 October 31, 2000 r 1 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 ' soils. The highest measured TPH concentrations in the soil on the site appeared to be 1 downgradient (to a distance of approximately 30 feet) of the former location of the removed USTs. ' An estimation of the remaining volume of contaminated soil in the area of removed Tank 1 is 30 to 50 cubic yards. Approximately 50 percent of this contaminated soil is ' estimated to contain a gasoline range TPH concentration greater than 1000 mg/kg but not ' more than 5200 mg/kg and diesel range TPH ranging up to 1800 mg/kg. The remaining 50 percent of this contaminated soil is estimated to contain gasoline range and diesel TPH at between 10 mg/kg and 1000 mg/kg. MTBE and benzene were present at minor ' concentrations in this area. This contamination appears to be present in vadose soils at ' depths ranging between approximately 5.5 feet and 6.5 feet bgs (the depth to groundwater in this area was 7.0 feet bgs). ' An estimation of the remaining volume of contaminated soil in the area of removed ' Tank 2 is 20 to 40 cubic yards. Approximately 30 percent of this contaminated soil is estimated to contain TPH diesel at greater than 1000 mg/kg but not more than 5200 mg/kg The remaining 70 percent of this contaminated soil is estimated to contain TPH diesel at ' between 10 mg/kg and 1000 mg/kg. MTBE and benzene were not present above the detection limit for MTBE and the adjusted limit for benzene in this area. The contamination in the area of boring B7 appears to be present in vadose soils at depths ranging between approximately 4.0 feet and 5.0 feet bgs and in the area of boring B8 at depths ranging ' between approximately 7.0 feet and 8.0 feet bgs. A few cubic yards of soil containing TRPH at up to 100 mg/kg may be present in the area ' of boring B9. This contamination appears to be present in the vadose soils at a depth ' ranging between 5 feet bgs and extending to near the groundwater. ' 3. The estimated areal extent of the contaminant impact to the groundwater in the areas of ' the former locations of Tanks 1 and 2 and the oil trap/sump are depicted on Figure 4. 4. The subject site is located in an area possessing no beneficial uses for groundwater, no ' production wells were observed within 1000 feet of the site and the Pacific Ocean is ' located approximately 2800 feet west of the site. Since source removal has been completed, and no free phase petroleum product was observed on the groundwater, EOC concludes that the petroleum hydrocarbon contamination that remains in the soil and r the groundwater at the site does not threaten a useable groundwater resource. Also, EOC has concluded that the minor dissolved petroleum hydrocarbon contamination remaining in the groundwater at the site is not likely to have impacted the nearby drainage channel, nor is it likely to impact the channel before the organic material and bacteria present in the soil degrade the compounds to below the contaminant action threshold levels. 6.0 FUTURE SITE USE ISSUES 1 It is understood that the City of Encinitas plans to build a park (Iwannah Park) on the site and on land adjacent to the site. A map of the proposed park was provided to EOC by 1 Mr. Weldon. A review of the park plans indicates that lawns and gravel walkways are 1 proposed for construction in the area over the remaining soil and groundwater contamination. Picnic tables and some play equipment may also be constructed in this area. Since no 1 1 EnvirOmega Consultants 14 October 31, 2000 1 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 enclosed structures are proposed for the area of remaining contamination, the area will be used sporadically and air will circulate constantly through the area and the levels of MTBE and benzene in the soil and groundwater are minor, EOC concludes that the petroleum hydrocarbon contamination that remains in the soil and the groundwater at the site does not, and is not likely in the future, to present an unacceptable risk to public health. 7.0 RECOMMENDATION Based on the results of the field services performed by EOC and Hubbard, as detailed in this report, EOC recommends that SAM issue a "no further action" determination for the Hubbard site. It is clear that public health and a useable groundwater resource are not threatened by the release of petroleum hydrocarbons that occurred from the two UST systems or the oil trap/sump that were previously located on the site and that the drainage channel is not threatened by the remaining soil or groundwater contamination. EOC believes site closure is appropriate in this case and that no further benefit will be derived from the performance of any additional services on this project. 8.0 REPORT LIMITATIONS This report has been prepared for the use of Mr. Don Hubbard (Don Hubbard Contracting Co. Inc.) and for review by representatives of SAM and the RWQCB (Region 9). Use of the j information contained in this report by other parties is at the sole risk of the user. i The client should recognize that the post-tank removal soil excavation effort and subsequent drilling and soil and groundwater sampling effort described in this report can not be interpreted as a characterization and statistical evaluation of the entire site but is intended to provide information relative to the effort to assess and mitigate the petroleum hydrocarbon impact to the soil and groundwater at the site created by the on site release of petroleum hydrocarbons in the area of the two removed USTs. This assessment and mitigation of petroleum hydrocarbon impacts does not preclude the possibility of the presence of petroleum hydrocarbons or hazardous materials in other areas of the site. The information obtained from assessing and mitigating the petroleum hydrocarbon impacts at the site can vary at different times and different locations and the interpolation or extrapolation of such data results in some degree of uncertainty. Additionally, the client should recognize that regulatory agencies possess the final authority relative to site closures and may require the performance of additional services beyond those proposed or performed and described in this report. Therefore, the conclusions and recommendations presented in this report should only be considered conclusive with respect to the information contained herein. No guarantee of the results presented in this report is implied or intended. 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I ~ sa a== g ul 1: x; • I ~d I 'F 4 1 Y • 11 c; 3' '1`r 4 r 4, `~c= II 11 'll t~ Fx I MI T n `6 P'ne"j 11~2S a o W 11 % N r} y 1 ~ t ~ _ : II t :.III I t ■ ~ ~ 1 ~ • t ~ • • t '11 A II I ~ ?h _ j .qg: v • i= ' • . 1 • S •11~ 11 Encinitas' I ' ~ ~ ~ San•• 'e ~ ~ U a ~ a` r ll ~ m o _ ~ u - Reference. Encinitas Quadrangle, San Diego U.S. Department of the Interior, Geological Survey 7.5 Minute Series 1968 Photorevised 1975 E1ZVlrOmega TOPOGRAPHIC MAP DON HUBBARD CONTRACTING CO. FACILITY COlZ.SILlt`a1Zt/s FIGURE 5 46 ENCINITAS BLVD PROJECT NO. EOC-98-065 ENCINITAS, CA A • t TABLES r r i 1 1 Don Hubbard Contracting Co. Facility Project No. EOC-98-065 Table I. Summary of Analytical Results 1 Tank Removal Soil Samples 1 Sample Depth TPH Identification ft. b s m /k 1 T1 N-10 10.0 <10 g&d 1 ' T1 S-11 11.0 <10 g&d T2N-8.5 8.5 <10 g&d T2S-11 11.0 <10 gas 1 3200 diesel ft. bgs feet below ground surface TPH total petroleum hydrocarbons mg/kg milligrams per kilogram 1 g&d gasoline and diesel 1 1 1 1 Table 2. Summary of Analytical Results Sump Soil Sample ' Sample TPH TRPH ' Identification (mg/kg) m k HC-Soil 1/20 32' gas 1300 3902 diesel 8003 C ' TPH total petroleum hydrocarbons TRPH total recoverable petroleum hydrocarbons 1 mg/kg milligrams per kilogram ' 1 gasoline range not identified as gasoline 2 diesel range not identified as diesel 1 3 extended range TPH concentration 1 1 1 1 1 1 EnvirOmega Consultants October 31, 2000 1 1 m 1 ~ Q Q ~ ~ mY Z a Z Z Q Q a Q Q Q Q ~ Q Q a Q a Q a Q N V Z Z Z Z Z Z Z o z Z Z Z Z Z Z Z o W m 1 z o +r N p v c,c a a Q Q Q a Q Q a Q o Q A` Z N z z z z z Z Z Z Z O Z Z Z Z Z Z Z Z O ~E ' W m 1 .22 Z Z Z Z Z Z Z Z Z Z o Z Z Z Z Z Z Z Z 1 H Y N a a a a a a a a o z o z z z Z Z z z z z Z Z Z Z Z Z Z Z 1 mE o 1 c. E C a to W s c mY Z o z Z Z Z Z Z Z Z Z ° Z Z Z Z Z Z Z Z '0 Em o X a a a Q a Q a a a a a a a a a Q a z0 z z z z z z z z z z z z z z z z a'Y Q w v w Q w a Q Q o o Q Q w om CM 0 a E Z o 0 0 0 o Z o Z Z o 0 Z Z o o Z Z o o Z W- V- Ir- T ~ CO v v v v v T v v v v v v T LQ W) V t H uY O Li O u) O tp O C O u) O 11) M! u7 C Q 1 - 91 VccQ~ r.: of CO eM- CO IM r CO r- 0 .~.d O N O to O O '+5 a uh o Lh d ui d h o D o d d C 4 ui r o o v ui r-Z 00 o T CQ co of vi cc I-z o C r T r r T r V O c V m C ~ Of Q G. v T N m e~ to t4 r• co E 4_ N M T a Q Q Q a Q a a r N M st cm co r T T T T r T r r r r T N N N N A A M y C m in m m m m m m m m m m m m m m m m _ _ _ m i i M22 = r = _ _ e) e) D _ = W I t ~ ~ ~ ~Y a a¢ a a¢ a¢¢ a a a a a a¢ a a `r E z z z z z z z z z zg z ~Z z z z z z z z z x ` W m Z c V ~ c"Y a a a¢¢ a a a a qz a a a a¢ a a a a ~ z z z z z z z z z z z z z z z z z z a L W ' ~Y a a a a a a a a a a a a zq a a¢ ¢ a a a E z z z z z z z z z z z z z z z z z z z NY a a a a a a qz qz ¢ a a qz a~ a¢ a a a a dE z z z z z z z z z z z z z z z z ' m tvm a ~E c ~ mY a a a a a a a a a a QQ a a a a a a a a a ' o c i- Z Z Z Z Z Z Z z z z Z z z z z z z z z z m ' NN ~ a~ ¢ ¢ ¢ ¢ ¢ a a ~ ¢ ¢ ¢ ¢ a qz a ¢ ¢ a a qz ~E z z z z z z z z z z z z z z z z z C 'C Q to h O cm cc ' H E Z o o Z Z o Z Z Z z o o z z o o o Z c v v v v v v~ v v ' v C ' C LO Wi in Wi ' V t to M LQ N LQ C4 W1 O LO O C O O O G N O M O C r ~O P- CD r 4 m ti o r v r~ O r f0 ti O r +r . a s a a a a ea O o a 0 a a6 o~ a 0 C G vi ro ai vi ui ti ao o .r vi ~c ao o Sri ti a o C r r r r r V V c 0 .gyp a ° lo C7 r c M d r N M et N r N M Lo r N M le ES , M et et ~ v ~ o ~ u3 u~ cb m ca m «3 r~ ~ ti ~ ~ Q Nc m m m m m m m m m m m m m m m m m m m m ' C a 616161616161616 U 61616 U 6 U U 1616 U 6 C w _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ = W 1 1 I ~ °c I ~ 0Y ~ Q a Q Q a Q Q ~ Q a a a a a a W)~ a Q `4 ► xE o z z z z z z z o z z z z z Z z o z z V V a ► W m 1 Z c v ~ "cY o Q a a Q a a Q o a a a a a Q a o a Q a ~ ► C o z Z Z Z Z Z z o Z Z Z Z Z Z Z o z Z Z I a t W 1 ► ~Y o Q a a Q a a Q o Q Q a a a a a Q Q a 3 o z z z z z z Z c Z Z Z Z Z Z Z o Z Z Z E v v v 1 I m 1 ' m Y tm LO o a a a a a Q Q o a a Q Q Q a a o a Q a I C o z z Z Z Z Z Z o Z Z Z Z Z Z Z o Z Z Z 1 00 to 1 a~ w mY r a a Q a a a Q r a a a a Q Q a r a a a z z z ► ° c o z z z z z z z o z z z z z z z o 1 ~ ~E m E 1 = o NN 1 Y a Q a a Q a qz Q Q Q Q a Q a Q Q Q a a ► z z z z z z z z z z z z z z z z z z 1 =Y m Q a Q a occ 0 z m m Q Q Q m m Q w m Q Q Q ► o_ Z Z Z Z CD_ O o_ c o Z Z z o_ o Z c O_ Z Z Z ► E _ v V N V V V v v V V M 1 w O O to q V~ O N O ~l O C 1 t Co N co to to O O O N m M 0 O N O O N M 1f1 O r r r r r r r m O r r r r (6 r-: 0.0 i N O N O O O N O Lq O M O O N O 111 O 1 c o r vi 4 4 6 r.: 00 o r CO it V to t- CO o r M V ~ c rc r r r r r r r r r r r 1 V V ° 1 1 Q Q.U r N M d M w r- w .Q U z E L_. ao r N M u~ t~ ti ao Q a Q Q a a a a r ► _ ab o 00 6 00 0 6 o0 0o ao co ao ao 0o 0o 00 C6 Q yc co co m m m m m in m m m co in m m m m m m co U 3: 161616 X: U U U U U U U U U 611: 1 0 " 4D 616101 U U U _ _ _ _ _ _ _ _ _ _ _ 4j 1 1 1 I 1 I ~ O O M O Lf) N 1 2+E Z Z Z Z o Z Z Vw O X N W m 1 Z c 1 A v c 'n c O a Z z z Z o z z 1 E v a L W 1 1 dY a a a a o a a o Z Z Z Z o Z Z 1 ~E 1 1 c to d Y 1 0 m dE z z z z o co Z Z I cc 1 CL ~E 1 a`0 w 1 ° c mY z z z Z o Z z 1 m E W E E E E= 0 Co c NN ~60 V- T- 1 Y Z Z CO V O O z z m 0 1 ~E v CO N 1 m c E-o 2 a) E=0 o f 815 1 . c aY Q Q v~ rn o Q Q c Vd 1 Z Z o 0 0 Z Z y 0 CL 0 m w o W 1 E v v vc m m m o e~ o Z m 1 anm 0 c NOS y m cm O O > c N co 1 w t 0 O W~ p E,r 8n ~m m m C Q. m ~ o o.~ ~,c ~ NW 07 ~cl O O d to o M w-- co O O y a% fn 1 C o vi P.: ao o t- ri v=m~moc`~a~~c~ y °w' E$$ E c cm cm v cam e 1 0 1 ~ o a 1 = o E w o a~a o 0 0 c W E I m CO m m m m m 00 cm =W 1 0 m _ _ _ _ _ _ _ ~tMaWa- In ~-ao6 1 D is~ E P P 2 z 01~Nchs LL 1 1 - 1 1 1 I Op C O 41 C7 r r r r r r e- e- T- O ' V M V V V V V V V V V V O X m W ~ 2 c v d O V C J p to to ~ tp ~ N to to to N ' d O O O O O O O O O p C V W ' y ` O to N to W N U tq Vp to N ' 7 V O O O O O O O O O p O V 1 ~ ' to W O d J d N N N N to ~ ~ O O O O O O O O W. Q O p ' m v m ' U) 3 a .o UJ * 0 0 o O O O O o O c r cm M I' O F' cpo v v v v v v v v v 0 ` C E d U) O c L C m ~ c aJ Q Q Q ¢ ¢ ~ ¢ ¢ ¢ Q °0 ~ v m z z z z z Z Z z z ' ° c T 0.0 v_ Q~ E o aNo cc U) N6 ' y a~ v v v o v v v m C.0 a 80 x _j cm 4) IL cn c~ o 0 0 0 0 0 0 0 0 o L E" m i- 00 0 O 0 0 0 O o 0 0 0 Oa V v v v v v v v v v m m a Q~w~TRaCMW MOI p>p.o N w p w ' w V E Q - C~ l o N `L ' d O 0 O O O O O O O O O 2-MS V - O O O O O O O O O O O N- O t4 M M c7 co Crl L C C C Or H H C w co co ch M M V) r U) E E Cc Wy, cc. cE V 0 w q.a w w+ .N rt+ y.il y.+ yI ' = E w r r N M d m OD 00 C m m co co co m m m m m m i o v v 0 v v v v 0 v 6 6 ~=am v 1 Don Hubbard Contracting Co. Facility pro ject No EOC 98-065 r Table 5. Summary of Analytical Results Organic Lead, EPA Method 8260' and EPA Method 82702 Parameter HC-61-2 HC-68-3 HC-139-Water ' Organic Lead (mg/kg) <1.0 NA NA r Fluorene (Ng/kg) NA 640 NA Phenanthrene (pg/kg) NA 880 NA Chloromethane (pg/L) NA NA 12 ' Meth I-t-but I ether (pg/L) NA NA 370 1 ' 1 Only EPA Method 8260 analytes present above detection limits included in table. All other EPA Method 8260 analytes were not detected. 2 Only EPA Method 8270 analytes present above detection limits included in ' table. All other EPA Method 8270 analytes were not detected. mg/kg milligram per kilogram pg/kg microgram per kilogram ' Ng/L microgram per liter NA not analyzed 1 1 1 1 r r r r r r r r r r r r EnvirOmega Consultants October 31, 2000 1 I Don Hubbard Contracting Co. Facility Project No. EOC-98-065 Table 6. Summary of Groundwater Depths and Elevations ' Boring Assigned Depth to G.W. Identification Elevation' Groundwater Elevation ft. MSL Z HC-B1 NA 7.0 ft. bgs NA HC-B1A 55.76 9.92 ft. BTOC 45.84 HC-B2 NA 6.9 ft. bgs NA HC-B3 NA 6.3 ft. bgs NA HC-B4 NA 7.7 ft. bgs NA ' HC-B5 NA 7.9 ft. bgs NA HC-B6 NA 7.8 ft. bgs NA HC-B7 56.66 11.04 ft. BTOC 45.62 HC-138 56.22 10.96 ft. BTOC 45.26 1 HC-B8A 55.00 10.05 ft. BTOC 44.95 HC-B9 56.41 11.25 ft. BTOC 45.16 Grate 54.57 16.05 ft. below to of rate 38.52 ft. bgs feet below ground surface ft. BTOC feet below top of casing ft. MSL feet mean sea level, estimated NA not applicable 1 Top of Casing elevation estimated from Encinitas, CA USGS Topographic Map 2 Based on assigned top of casing elevations 1 1 1 1 II 1 1 1 1 i 1 1 1 i 1 1 EnvirOmega Consultants October 31, 2000 r r r r r r APPENDIXA i i i i i i i i r r r 1 I SITE AESSMENT AND MITIGATION DASION UNDERGROUND STORAGE TANK SYSTEM CLOSURE REPORT ESTABLISHMENT NO. PLAN CHECK NO. sQT~1Z SITE NAME en LA 6arp PHONE 76 '763 II 7 SITE ADDRESS 4 G l✓Mc';~~f-Q VId CITY f'trcXS zip 9ZOZ~~ CONTRACTOR Do% H b6ar-J PHONE -760 --IS 3- 1137 ' Number of tanks to be removed 1 3 4 5 6 7 8 FIRE AGENCY PRESENT YE NO Decontamination by Rt?-IC'r~at:'~Q D+r. ca Dept. Mrre%A0kV1 "~y~st µrccte. Manifest No. 97415994 Permit No. Tank dnsate/(amount & destination) _200 9a(110AS J-6 D Inspector • D. 'V7Z ' Tank ID No. 'Tool Tool REMARKS Capacity 1 E7 1006 T p w ~c ! c o wd iii c,, c4cod Ta • Construction it +6kM3r -4" M rials stored N4 d Ca~c~.'h Gt od % L. E. L. staff ~Q C ti ECG -l t, s C'k ' Dry ice/other (amt.) l p ( 'rp~ W k 002 t r c+e ' Tank condition COv, I+Kpu . E-:- I, 5 *Chok ' Backfill soil type r * C S~ . So1►ce Backfill condition .M' H . S CO l oaf -j p M ® So, l) t vn Native soil type t -1 1a &Y_CetV0rtj .n. 5:.AjQ11 GtA,C Allt Native condition O+ 06PS,!A ~~~p., O~+ $µr Qe . Excavation odors? a vom "d oEA4er. Stockpile odors? took ; t? lea d a ^ t ojor ' Water present? V i ' Ponded product? y~ O y~ e od, Sec w-e k-&H, ' Piping removed? 6-2 eN&C VOLA io" S REINSPECTION REQUIRED I ES If yes, explain NOTICE: You are hereby notified that on ! 2 /_I / J, a Hazardous Materials Specialist conducted an inspection for the closure of Z hazardous substance underground storage tank(s). A summary of the conditions follows: ❑ An unauthorized release of a hazardous substance has been observed by the Hazardous Materials Specialist. You are hereby required to initiate Corrective Action measures (see Page 4 foi details). A determination of this site's status is pending the Site Assessment and+ Mitigation (SAM) Division's receipt and review of analytical results for the samples taken from the tank and/or piping closure site. A laboratory report must be submitted to SAM within 30 days. Please request that the laboratory send a copy of the analytical report directly to at the address provided below. • It is the responsibilityof the tank owner/operator or their agent to maintain the tdnkctosure site in a safe and secure manner. 1 Notify the 'local Fire Department and the SAM Division immediatety whenever a fire or explosion hazard is present. 1 Authorization to backfill the tank' excavation for safety purposes' does not indicate that a suspect or, known unauthorized 1 release has been mitigated to the satisfaction of SAM or any other regulatory agency. i RECEIVED BY L Hazardous atena s p ist PRINTED NAME SAM - P.O. Box 129261 • ' L • 6/1 San Diego, CA 92112-9261 (619) 338-2222 PHONE NUMBER DISTRIBUTION: WHITE-RETURN TO SAM YELLOW-BUSINESS RETAINS County of San Diego I M(BBItLI one LABORATDRI ES INC. 12/7/98 Enviromega consultants 16732 Palmero Drive ' San Diego, CA 92128 Project Name: Don Hubbard Contracting Co. Project No. H#03635, AT#4231 I Attention: ' Mr. David Ea►inhizer cc: Mr. Scott Weldon; County of San Diego, SAM Mobile One Laboratories received and analyzed the following sample(s): Date Received Quantity Matrix Date Received 12/4/98 4 soil Quantity Matrix The samples were analyzed by one or more.of the EPA methodologies or equivalent methods as specified below. TPH CA DHS "Total Petroleum Hydrocarbons" BTEX EPA Method 8020 TRPH EPA Method 418.1, modified for soils VOCs EPA Method 8260 The results are included with a summary of the quality control procedures. Please note that the, symbol "nd" indicates a value below the reporting limit for the particular compound in the sample. Flags qualifying the data are explained in footnotes on the same report page as they occur. Please feel free to call us to discuss any part of this report or to schedule future projects. Sincerely, c 4Recca L. Johnson Ar J cker, Ph.D President Lab Director Mobile One Laboratories is certified by the California Department of Health Services (certificate #s: 1194,1561,1921,2088,2278), and the Arizona Department of Health Services (certificate A2WO- MOL Project # E0102 48 SO. VINEWOOO STREET 9 FgmK'n'nn hA M(961tl n LABORATORIES INC. Report Summary 1 Client: EnvirOmega Consultants Matrix: soil Project: Don Hubbard Contracting Co. Units - mg/kg Method= TPH TPH TRPH <------------8020--------------> Analyte = Gasoline Diesel MTSE Benzene Toluene Ethyl- Xylenes benzene Detection Limit - 10 10 10 0.1 0.05 0.05 0.05 0.15 SAMPLE I.D. Date Analyzed: 12/4/98 TIN-10 nd nd T1S41 nd nd T2N-8.5 nd nd T28-11 nd 3,200 1 Footnotes: nd = Not found above the detection limit. & = Gasoline range organics not identified as gasoline. # = Diesel range organics not Identified as diesel. Sample dilution was required. Detection limits were adjusted accordingly. J = Analyte amount exceeds calibration curve. Amount estimated. This compound has been screened by EPA method 8020. Any positive results should be confirmed by a second analysis. = A second analysis has been performed on this sample by Mass Spectrometry. The results are as indicated. Analyses performed by: Bret Hutchinson E0102 Page 2 of 3 ' 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029 • PHONE (760) 735-3208 9 FAX (780) 735-2469 m(aBitions LABORATORIES /IN C. QC Summary Client: EnvirOmega Consultants Project: Don Hubbard Contracting Co. Matrix: soil Method TPH. TPH TRPH MTBE Benzene Toluene Ethyl- Xylenes gasoline diesel benzene APR - % OC Limits (67-125) 67-125 (75-126 60-125 (60-125) 59-125 (52-125) 60-12 RPD - % OC Limits <30 <30 <30 <30 <30 <30 <30 <30 Date Analyzed: 2/1 4/98 Spike Level (mg/kg) 151 251 MS Amount Found 158 236 MSD Amount Found 152 258 APR - % 102.6 98.4 RPD - % 3.9 8.9 1 r 1 1 r 1 r r r r r r r r r r r Calibration verification was within acceptable limits. r No contamination was found in method blanks at detectable levels. E0102 r Page 3 of 3 148 So. VINEWOOD STREET • ESCONDIDO, CA 92029 • PHONE (760) 735-3208 FAX (760) 735-2468 0 0 0 p ~ s w C = I N . Z m m c0 ca U m N ` Q O C c d1 (a 0 F- Z p C O C E -8 Go wo CD = W O = 'p O* C 0) Cf) co - 3 6 U C J > CL E rs a 0 LL co C N m E U c i C co z o Jo w`>E>-Of ° ° ° mm cE E CD W ~v~ cow o U o Si O ao25 m m ca v o U- Ww m C x rn Z E•5 co m ~c1 F- ° w CO '`L► 0i Q cA° ° c L m a cn E no D (D q 0 0) 0) C13 U~OCA~av) F' N m aa) a) Sa3NR/1N00 d0 'ON 0) 0.0 Cc F- Co 0 _ p ca ° LU 31190dwoo m m m m D H D F-- ~ eea~ w a oinon ' a a co anos m m r CD ° g r o o w ° m 4) t; D 0) D Mg/0108) ? m. a ~ °w m z o E LE r m w a3lVN3001VH j a Co> r CL c 'a °C °r (D CL (zosiozos) _ E 0 _ E .002 r co 3X19 c~ i' a` U cr iA n U m_, C? Q Q t'sly Vd3 m m m m m C0 r O Z Hdal E a E c° c r Q aoH13w sHOa ° ° 3 r a r r Hdl } r N C~ 0° w ° v O Ti r! N w r a Y° E E S d p 'L ° Z c > Z w Cd 'o co J T d aC C c EU c E 0) -r 1 r 4~ v d a 8 n CL . c`~ ~ cn o cs ID CD CD r~ Q !U i Q M m z - - w CD y j O LO 5 m co m rn 1 Z C y d w J C> Z C 1 i m m F- w T EL E 2 %P w a m au1 o a m ta/), 40 E T cr a CO -i CO a'- ° w w 1 r aV U or= co a ° 1 1 1 ~0 ~ 1 F 1 ~ 1 . 1 .150 1 r r r r External Standard Report bata File Name C:\HPCHEM\1\DATA\120498\011FO101.D pperator Bret Hutchinson Page Number : 1 Instrument HP - 1 Vial Number : it Sample Name TIN-10 Injection Number : 1 n;Time Bar Code: Sequence Line 1 Acquired on : 04 Dec 98 03:57 PM Instrument Method: TPHFRONT.MTH [Report Created on: 04 Dec 98 04:17 PM Analysis Method : TPHFRONT.MTH st Recalib on 05 MAR 93 04:05 PM ISamp STDle Amount : O r ltiplier 1 I Amount 1 in C:\HPCHEM\1\DATA\120498\0I1FOl01.D Name. t 'Time Area Type Width Ref# ng/ul ►~-------I------------I----I ---I I-------- 2lgasoline 4.150 313734 W 0.000 1 n~ diesel 12.252 * not found * 1 I Got all calibrated peaks were found 1 - - aaaa======as=a=asa =aaoa::caacaaaaooca-aaaaaaamaa=aaaasaaaaoo=-===_-__°-==-aa=c ( I 011 ~ ~ N CJ ~P ~ 0 0 0 0 1 0 (D (D N (D 1 1 I .150 External Standard Report )ata File Name : C:\HPCHEM\1\DATA\120498\036RO101.D )perator : Bret Hutchinson Page Number : 1 Instrument : HP - 1 Vial Number : 36 ")ample Name : T1S-11 Injection Number : 1 tun Time Bar Code: Sequence Line : 1 lcquired on : 04 Dec 98 03:57 PM Instrument Method: TPHFRONT.MTH tport Created on: 04 Dec 98 04:17 PM Analysis Method : TPHREAR.MTH past Recalib on 05 MAR 93 04:05 PM Sample Amount : 0 sultiplier 1 ISTD Amount ")ig. 2 in C:\HPCHEM\1\DATA\120498\036RO101.D tet Time Area Type Width Ref,f ng/ul Name I -----I-----1- 4.150 4.150 115573 VV + 0.000 1 t8~&7 gasoline 12.252 * not found * 1 diesel fot all calibrated peaks were found O O O 0 r ~ .150 1 M . r t r i ~aaasaxasoxsoexasxseasasaseasxassxssxxossxsssss=ssxccssss=sssssssssxsssxsas:asa ' External Standard Report 'Data File Name C:\HPCHEM\1\DATA\120498\012FO101.D Operator Bret Hutchinson Page Number : 1 WInstrument HP - 1 Vial Number : 12 0-sample Name T2N-8.5 Injection Number : 1 un Time Bar Code: Sequence Line : 1 Acquired on : 04 Dec 98 04:18 PM Instrument Method: TPHFRONT.MTH Report Created on: 04 Dec 98 04:38 PM Analysis Method : TPHFRONT.MTH Last Recalib on 05 MAR 93 04:05 PM Sample Amount : 0 Multiplier 1 ISTD Amount 'Sig. 1 in C:\HPCHEM\1\DATA\120498\012FO101.D et Time Area a Width Ref# ng/ul Name ~'YP I I 6 . i 4.150 519452 VB + 0.000 1 gasoline 12.252 * not found * 1 diesel. Not all calibrated peaks were found " N CJ 0 0 0 t a a 12.040 1 1 " 1 ~ 1 External Standard Report Bata File Name : C:\HPCHEM\1\DATA\120498\037RO101.D rJperator : Bret Hutchinson Page Number : 1 Instrument : HP - 1 Vial Number : 37 ample Name : T2S-11 Injection Number : 1 Fun Time Bar Code: Sequence Line : 1 Acquired on : 04 Dec 98 04:18 PM Instrument Method: TPHFRONT.MTH Report Created on: 04 Dec 98 04:43 PM Analysis Method : TPHR1028.MTH iLast Recalib on 05 MAR 93 04:05 PM Sample Amount : 0 'Multiplier 1 ISTD Amount pig. 2 in C:\HPCHEM\1\DATA\120498\037RO101.D Ret Time Area Type Width Ref, ng/ul Name --.236 I* not found -~----~-----~-i---~-------- (gasoline---------------------- 2 ) 1 12.040 2.21554E+007 MM 1.987 1 3227.386 diesel 1 Not all calibrated peaks were found 1 1 (User Modified I dxruntu v# C*zt C p1jesv* mc~mw GARY EANSIX DEPAKTN MT CF p#Vgro1 NMTAL HEALM ASSETAMT UROC OR ' ORFCrON LAMD Aw WATER auALrrY tr1A=w P.o. sox 1"=J. SAW DIEGO, CA 02771-W411 pis) 3311.2:1! FAX c.,.1 $49-:iTY June 16, 1999 ' - Don Hubbard Contracting Co. ' Attu: Mr. Don Hubbard P.O. Box 577 Encinitas. CA 92023 Dear mr. Hubbard., ' UNAXYTHORIZBD RE.LEAM Or PETROLEUM PRODUCT FP4" UNDERGROURD STORAGE TAM AT VW HUBBARD 0COTRACTZPG CO. 46 EXCItiITAS BLVD, ZNCIBITAS, CA 92024 ' CASE 003635-001 ' The Sate Diego County Department of awri- onmental Health (DER),. Site Assessment and mitigation Program (SAM).. has reviewed the Unauthorized Release Report (Form ?A*. ESC-05) submitted by Don Hubbard, and dated ` May 28, 1999. This report oonfuias to the Initial reporting requirements outlined. --i.n in. Chapter 6.7 of the California Health and Safety Code lands ' Title 23, Division 3, Chapter 16 of the California Code of Regulat (CCR) • California lair states that contamination resulting pthreat ren an to public unauthorized health release (leak) of a petroleum product may D~ ' and the environm+snt. The law requires responsible parties (persons investigation and responsible) to take corrective actioub, including ' rmwdiation (c).eanup) of soil and groundwater contamination caused by an unauthorized release. California regulations require that voc plans for submitted ' any site investigation or reme actiwlties 9 mind be perfo and approved by DSFI pxior to imp e~ work l~ most rent SPY of in accordance with the guideM nee preaeutsd in the DEE's Site Assessment and Mitigation Manual. Please suls>ott a varkpUm& dsaa Abinp yaks P *d aat:LvL+A*& to ",estAvate the abvlm-W0Z0Z0Wmd 1 ss osisvd s010600, by im "t 15, Is". The fuvestigatian and the remediation of an wma>zthorized release are performed in separate pdszes• much of the work msst be performed usually pe professional civil engineer or tble pies generally obtain the geologist the the mad, direction therefo fOre. a registered respcros' ' sexvices of a qualified enviror%antal consultant. Oltimatel teas anal, required to submit a written report, sigaed bit. a registered P~ WbL£ch addresses all the items on the enclosed -site Assessment Report Checklist." 'we ire cemwi ' i i • mr. Don Hubbard - 2 - June 16, 1999 Igo remind you that if you intend to seek reimbursement for your investigation and remediat,ion costs from the State hater Resources Control Board's (SWRCB) Underground Storage Tank Cleanup EUnd, you moat obtain'a minims- of three bids for the proposed work. Additionally, failure to rramply with DRH directives may jeopardize your eligibility for the reimbursement from the Underground Storage Tank Cleanup lhind. Please be advised that the California Health and Safety Code authorizes ' DER to issue notices to ensure the timely investigation and remediation of unauthorized release sites. These notices are called corrective ' action orders, and put responsible parties at risk of further legal action and monetary fines. ' Copies of the workplan requested above, and all future submittals, *hmld be sent to DSH. Send correspondence to my attention at the address appearing on the letterhead above. ' DEH staff are available to meet with you and/or your envirormental consultant, to discuss agency guidelines and requirements. Please call ' me at (619) 338-2539 if you have any questions. Sincerely, ' s 1ItSLDOH. Project Manager Site Assessment surd--Mitigation Program ~ sq: rya ' Enclosure: Site Assessment Report Checklist ' Cc: Ids'. Bob Nelson, City of Encinitas, Director of Public Waxks i ■P/a0.1p51ori71 ~t % ~ c~+wr.•~+e~ falls r„artntrst & Sory0fax Fxd) r We PC F. JOB AUTMRiU'TION MEMOTUMUM We iNo 13, Im 1 ' Ceedslsrim EtnrMnr CaMPWW (CEQ Is wAvdz d to po+►as tft talkWrV ftwbion far to pWjW Idea bdwA ' CLEM: . Mr. Dan HLMbmd 1 Ike ConbliAG co. 1 PRDJ eT- 46 awwAsi whmL 1 LJD"I W: 6ndnI CA, 1 AN"C Tw TONIMAE! "D PAeiflow: MCC 1 rrxx 1 WCUOR& 1 Trsa* o t E F4WVo * (NarMiWI rftA) 1 l _ T bgm 1 No _Bw M■a~.i Ammml of daw* p Now 1 ao~ of pwpvwO der on: BoWm In fu. 9 fts Wbv ol+ plr4l 1 I CEC Is Io p QQWd VM No WM& tM#* 0 NO Kd con ion dVAO . I hweW std raasl qw% an Apd 12. M, 1 Autuxbod 1 sage cork pms*m r ~ 8k~tuAy r - • .tom 1 I 2131 xeti+err Bhwd.. Sra 2A#,Sse yrgv, CA 92)01-1253 • Tetephorx (614) byK-d20T • Fiat (19) 49d-5117 i I ~~~~ytiiONgt~~r~ v ~ 4 CA NDV AR1A E?4 y 7RONNAMIAL COMPANY x coww I"atrd Soils -s Fr~trrrN~rtt do RrrrrNot4 Fac lift' C1,0L DATE 4113199 I MICE 8 99-070 CUSTOMER JOS NAME Hubbard ContracUM Ca. Hubbard CanUVding Yard Don Hubba ld 46 Ftnitss Blvd 46 ErK*nkm Blvd. Endr>ittB, CA Encinsas, CA PRICE1rON_ $20,00 TOTAL DATE MALNIFEST * TONS CHARGES CREDITS BALANCE 4113M 25288 26.64 $530.80 $530.80 25239 26.77 6535.40 81,Dd820 4/14199 25240 25.82 ;572.40 $1,638J10 25341 29.22 5584.411 $Z223AD 25242 29.00 5350.00 52,803-60 23243 27.39 5547.80 63,350_80 AJ1SM 23244 29JM $597.80 $3.948.$0 26M 26-62 $532.40 $4.481.00 [TOTAL AMOUNT DUE IN 5 DAYS AP'RL 20, 1999 48110 OTAL TONS 224 05 i THANK YOU FOR YOUR Bl18INES3 X1120 W9 D1~ Ann awduhts' me aid by the due dale am WA jest to A abonge ke of 51.06 per ton per day. 2535 Kanner BlveL, Ste. 2A4, Sari Diego, CA 92101-1253 • Telephone (619) 696-6207 • Fax (619) 696-3117 i I 51175 WE1GHMASTER CERTIFICATE THIS IS TO mm tfwt the faNa; ' Chee4 °OO~ vrae'~-d`~ a~ ~~pr+~~d by e 71 ~ nistwed~bl► tl~+ri Diwision DIVWwn 6 of *m CRINOW is BMW= snd Prate of Food and Ag of YeawransnW obwwwde of the rwarnia D" mmWit Delivered To & Weighed At Candelaria Environmental - Weighmaster 4001 Candelaris Lane Anxa, California 92539 999-763-0129 4.~e.•r Weighed For, © Manifest No. 2 3 ARN: Carrier:" Truck Mense No. Truck Trailer No. W ca.n.wdt,►: ~-~'d°"e s°~A+"'eri11af • ' INEmallIM C E ] GROSS: [ ]TARE: NET TONS: Candelaris Envim - Wei aster Gross & Tare By: e•rer CANDEL.AMA ENVIRONNIR AL I., 252$8 B10TREATMENT FACILJTY NON-HAZARDOUS MATERIALS HAULING MANIFEST NAME: ADDRESS: Rt vim. PRONE NO..(?"j..$,j~ /1ST G CITY, STATE, ZIP -At e i As j rA q CA. APN-. E 91.9 ova N WASTE DESCRIPTION A M,61. AjA 7 D& GENERATING PROCESS E COMPONENTS OF WASTE (PPM) COMPONENTS OF WASTIE (PPM) R A~~ll~tarcC~.32sia - - T O r R PROPERTIES: SOLID HANDLING INSTRUCTIONS--1, 9613 APPMPRIATE CLOTHING , GENERATOR CERTIFIES THAT THESE WASTES ARE SCRA NON-HAZA , AND M FORMA NON. HAZAPXKXA BASED ON THE VYFOR MATION PROVIDED BY THE GENERATOR ON THE SOIL ACCEPTANCE API~ICAT AND THE PANYINGn LABORATORY DATA BY: J7 DATE: +-Il-qg I Print nr T Name -COMPANY NAME PHONE NO. H ADDRESS !joi SERVICE ORD NO. A CITY, STATE, 21P C.,@ 9ZD, 69 PICKUP DATE T=! 3 -1t~_ U TRUCK TYPE: DUMP wf~ROI OFF OTHER fL-Ar 1 TRUCK I I # ' E TRUCK UC. # TRAILER UC. # l _ J S 57 R DRIVER NAME V 100.0.0 1 DRIVER SIGNATURE TIME LEFT ' P J01~3 r; UP . R JOB SITE REPRESENTATI~ e. •e C Signature Name E , im- - ' S Deliver 1o facility Location: Main office: S CANDELARIA EWROMMENTAL Phone:(619) 696-8207 O 4001 Candelw* Lane FAX (619) 896-5117 R Anne, CA 82sog .241 Emergency (61 9157 (909) 763-0129 1 1 1 1 ' S 17 6 WEIGHMASTER CERTIFICATE TM IS To Cr=WnFY 1hst tha i doe rq a~r1b oomm~ .nm 1oop.~ -d or amwM d by a weigbmaetOr. Whaa b an this whSeafion o is . 27ooZ~of eukhoriy of amwrr=Y~r as vr~d la! Ch9PW 7 Wo-o with ~wiston b ott3te CsFfomia Bu#iraw andfrofejomQ d&-&d~k[erod bvtw0 iawn and of Meswrements SWdarde of Im Ceiif9mia oepmmwK of Food Apricniture Delivered To & Weighed At Candelaria. Environmental - Weighmaster 4001 Candelaria Lane Anza, California 92539 909-78"129 Weighed For: z- r-e G.Ab APN: `'f r0 Manifest No. ..2-~~ Carrier. / Truck License No. Truck Trailer No. l~ r F Commodittr- Noaaazwd0w80WMw-FW 1NEIGNT'x t l GROSS: { t I TARE: / r, NET TONS: Candelaria Envi n ental ZW....hmaster Grass & Tare " ~ .1 r r 26239 CANDMRIA ENVIRONMENTAL BIOTREATMENT FACILITY NON-HAZARDOUS MATERIALS HAULING MAN11FEST NAME= +,t A 0_ ADDRESS: FA C..er JAJ . TAx Bl ✓n _ PHONE NO. a'J 7313 ► ► . 7 G CITY, STATE, ZIP &"~Iti.►zi rw_w APN. E N WASTE DESCRIPTION ,./nJy4Az. GENERATING PROCESS Jfr E COMPONENTS OF WASTE (PPM) COMPONENTS OF-WASTE (PPM) R A - Tom// •C :X2 po rbf T O R PROPERTIES: SOLID - yes HANDLING INSTRUCTIO : WEAR APPROPRIATE CLOTHING GENERATOR CERTIFIES THAT THESE WASTES ARE FCM NDN+IAZ-ARDOtX3'AND CALIFORrm NOW DO , gA$ED ON THE I ORMATION PROVIDED BY THE GENERATOR ON THE SOIL ACCEPTANCE An L A ICATI I AND THE PANYM LABORATORY DATA BY' f 0ATE:r13- . S' tine ! Print ar T Full Nww -COMPANY NAME S~'~r** Myeti~'~ PHONE NO. 6/f ff! -V71y H ADDRESS gel Ah-,W ,XT SERVICE ORDER NO. A CITY, STATE.. zip 5R4' vi&r !E U 4z*%f PICK UP DATE Y U TRUCK TYPE: DUMP.L_ ROLL OFF OTHER L TRUCK LIC. +jy/& TRUCK ID # ,69/ E TRAILER LIC_ # jW !S R DRIVER NAME DRIVER SIGNATURE TIME LEFTJOB I .3 LQAID*P P R JOB SITE REPRESENTATIVE O Name f rh. C E S Delim to facility Location: Main office: S ' CANDELARIA ENVIRONMENTAL Phone-(Big) 7 O 4001 Ca lelaft Lane FAX (619) 696-5117 R Anza. CA 92539 24'ff Emergency (61 157 (909) 70"129 :war i . 5177 WEICIM MTER CERTIFICATE THM jS r0 CERTIFY that the topowin d~ihed canDUWRV WW weighed. mea=wed S ' oo~untad a w~' snd b an this waaf uthorigr of ath. Cgjif.rn .Same M 7 {oom d*-a&~q ~ * 55ren deb Standards of sho Caiiomis DePSAM nt o[ Food ww AgtculP" MINered To & Weighed At Candelaria Environmental - Weighmaster 4001 Candelaris Lane Anza, California 92539 909-763-0129 Weighed For, !f f3 -r APN: $ 7-4 Manifest No. Carrier. t Truck License No. t Truck Trailer No. Gc~ F r ctmmaditr. ~-~"dO1a ]GROSS: J ~ I ode 11gE1 i1' a r [ ] TARE: t''~/' ! NET TONS:~ Candelaria Environ I - Wei aster EjV_ Gross & Tare ►:a 15240 1 CANIDELARIA ENVIRflNMBMAL 1 B10TREA'TMENT FAL;l rTY NON-HAZARDOUS MATERIALS HAULING MANIFEST 1 NAME: itb-- A17--A T -PHONE NO. rd 7 _ c 7-L '7' ADDRESS:_ ry T~t~ ~'4 • ' ► G CITY. STA E, ZIP -C- APN: 1 E N WASTE DESCRIPTION.to--j -,&#+z ,Ib+L-- GENERATING PROS E COMPONENTS OF WASTE (PPM) COMPONENTS OF WASTE (PPM) ► R 1 or I1►~'sEt~ 7-~y 31oc~ t A I T a. R PROPERTIES: SOLID HANDLING INSTRUCTIO VZV-E- i nooo„n„ m [ATE ry t'STNING I - I N~TOR OBTTIRES THAT _TKM WASTES _ ARE RCRA Wk4 AZAFMM AND CAUFORNIA NO ~IGE HRZA ,BASED ON THE IN opmATION PFIoVIDED 0TTFE GENERAT#t {~PtTHE':~4~ AM CCEPTA I API~IICATp THE AWING LABORATORY DATA DATE: I BY, I Sigmt ure ! Print or FIdi Name I -COMPANY NAME PHONE NO. d(lf V YT'9- H ADDRESS 1 O/ AIfe i ,Piv SERVICE ORDER NO. A CITY. STATE. ZIP cN PIS UP DATE 4 -!l- ff U TRUCK TYPE: DLJMP _ ROLL OFF I L TRUCK LIC. TRUCK ID E 4 TRAILER; "c- # l t f P R DRIVER NAME I DRIVER SIGNATURE & I rTI E :LEFT, JOB ~,F LOADf (Jr P R REPRESENTATIVE i O Name I E S Denver to facirlty Locamon- Mein aMiCe: S CAND}ELAFRA E7dVIF OMMENTAL. Phone-.(619) 6A6-6207 0 4001 Candelw1a Lane FAX (6191696-5117 R Antes, CA 92539 24"' Emergency (6 137 I (909) 76:3-0129 I I 1 I t M ~ ~ 'S 17 8 WE GUMASTER CERTIFICATE Ms 6 TO MTi" "wt *w fogow q d~acnb~d cww= i~as weWwd. mew tmd or counted W a whose bpnature s on this 90a6a soaC a~ Pre "ad amid ~Ooda bmpwd bv*o Dwaion of mem Wlessure°fments a~S14ganadsrda of th° CmDorni° DgwAmwA A~Fo an Agticuft" of im wered To & weighed At: Candelaria.Environmental - Weighmaster 4001 Candelade Lane Anza, California 92539 909-763-0129 Weighed For:. _ APN: V-Vd Manifest No. A ir Carries ~r- Truck License No. Truck Trailer No. Commodtfr. IGwA4pUwdmw 5674MAUdd 1RE1~1L'fs: [ l GROSS: ` [ TARE: Z 49 T .2 NET TONS: Candelaria Environme to Weig ster Grass & Tare BY: E 25241 CANDELARIA ENVIRONMENTAL 810TREATMENT FACILITY NON-HAZARDOUS MATERIALS HAULING MANIFEST 11 p 111 110 13A III ° - FADDRESS: ME: "++a ~ w PHONE G Y, STATE, ZIP t•'` G'~ r- APN: IGENERATING PAOCESS ,r- ew-Mrl"t So L N WASTE DE&CRIPTiONo1./ E COMPONENTS OF WASTE (PPM) COMPONENTS OF WASTE (PPM) - R A rp~r •C 3z 00 Le J)q ' rt~ ~ T O R PROPERTIES: SOLJD or,oQ~eT~ ry nTNINC~ HANDLING INSTRUCTI : 180 APP. GENERATOR CERTIFIES THAT THESE WASTES ARE ~D~t~ OI~TH L A~t7CEPTANCE CALWOMIA NOW I IAZ,II IDD BASED ON TFE INFORMATION A CAT D THE ANYING LABORATORY DATA . ~ DATE: ~~~3: BY: ►ure 113"Wor Full Name r -COMPANY NAME GRIPyree "rr! Ll~r.~S1' IZH-I NO. • -SECE ORDER t H ADDRESS wvt $K UP DATE A CITY. STATE, ZIP _ _ U TRUCK TYPE: D~ML f - OTHER TRUCK ID # L TRUCK LIC. ~ FYI -G, ~i~ E TRAILER LIC. 0 frs-- R DRIVER NAME T c DRIVER SIGNATURE J LOAD # r TIME LEFT Xe P R JOB SITE REPRESENTATIVE ' Sjgndturb - O~ C E 'r---. S Deliver to facility L_ocatian: Main office: 9) 896-5207 S CANDELAIRIA ENIARONMENTAL pFAX~(w::{61(61 699-5617 O 4p01 Candelaria Lane 24 ti Ernwggw'CY (61 651 R Anza, CA 92539 f (909) 783-0129 1 1 1 I ' aLl 1 F: 51 8 7 1 WEIGHMAWER CERTIFICATE 1 na 6 TO CERTIFY that the wing da-►~ pdilywasvreig _ ed, ~asd I or eoa'td by ■ wsigh~r, srhwe a~pna~ure ie on this who i~ e ss prssar~ed by Chwpptter 7 foom Sedtiun 12 - _ of aufi►o►ilY mess and Pro~eaafons Code. admirw/ the Osswa+ 1 Division 5 Of the CAN" 4{ 1►iaeaurernerds Standards of the Galilornia ~~M of ftDd end ft I 1 Del"nrered To & Weighed At Candelaria Environmental - Weighmaster 1 4001 Candelaria Lane 1 Anza, California 92539 909-763-0129 1 % Weighed For: _ Lmmwfia-..~ 1 rd ~d • APN Manifest No. : Carrier: { 1 Truck License No. ` 1 Truck Trailer Flo. I h1on.Haxerdoas Soi,Y,,,,~ wF3GN1'S: [ 1 GROSS: 1i - J*i I [ ] TARE: 1 NET TONS: I Cendelaria Environ n - We* aster Gro$s & fare By: ' 4 - ~ •--'rid I • 25242 CANDELAFHA ENVIRONMEk AL 1310TREATMENT FACILITY NON-HAZARDOUS MATERIALS HAULING MANIFEST NAME: N A 1111111 PHONE NO. ADDRESS:. 'y% - - - - 6u ++/,Q_ APN: P..-- T-~-~ - I G CITY, STATE, ZI -in I E I= ~t„r s T N WASTE DESCRIPTIOJ -Al GENERATING PROCESS I E COMPONENTS OF WASTE (PP COMPONENTS OF WASTE (PPM) R - A i O1-i 4 3 2 me CZ?-i ►e. ~-L 1 T 1 O R PROPERTIES: SOLID 1 HANDLING INSTRUCT 1 _ 1 - GENERATOR CER ERTlRES TfWT THESE WASTES ARE RCRA NON-FINTJIA6OM AND1 HAZARDOUS BAS THE ACrM BY, N THE INFORMA PANYNT (M PRE IDE 13Y THE GENERATOR OIL ACCEPTANCE APptJGA AQIA . _ I TA ~ ' Signature I Pr int ar T f -COMPANY NAME PHONENo. VICE QpDp3 NO. t H ADDRESS CITY, STATE, ZIP UP DATE U TRUCK TYPE: DUMP ROLL OFF OTH RUCK ID ' L TRUCK LIG. # ~A CIA t.. ~ ~y1(o ' E TRAILER LIC. R DRIVER NAME N -d . c ' DRIVER SIGNATURE ' TIME 7LEEFT 2- % LOAD # R R JOB RESENTATIVE - Signure 1 C E 1 S Deliver to facility Location: Main office: S CANDELARIA•EWIRONMENTAL Phone:(619) 896-6297 O 4001 Candelaria Lana FAX (619) 698-5117 R Anna. CA 92539 24" Emergency (619) (909) 763-0129 1 41 WE GNMASTEIi CE,ItTIFICATE THIS IS TO C MT",MMVwfcIuwiny dosrllbedoo wee weighed, meesursd K999mmDepaiti. Dianas,d~ whose s ecure w tlus' e~ e prosen~d by aapp~~arr farria Business snd Proks9iamm o uckadgMa med byrthe DWWm 9teedardo of the Caliharnia tlepsrtmeet Fend and Agrieukure a Delivered To & Weighed At Candelaria Environmental - Weighmaster 4001 Candelaria Lane Anna, California 92539 . 909-753-0129 Weighed For.- APN: JTr4 Manifest No... 2 i Carrier. Truck License No. Truck Trailer No. 9M I I GROSS: q 0I l TARE: NET TONS: Candelaris Enviro e I - Wei star Gross & Tare 1 By, DOW / I 1 1 1 CAN DELARIA ENVIRONMENTAL 1W 2 5 2 4 9 13I4TREATMENT FACILITY NON-HAZARDOUS MATERIALS MAULING MANIFEST I 1 1 1 NAME: ADDRESS: ✓ ` • PHONE NO. s G CITY, STATE, zip APN: 9 T- 7 b E N WASTE DESCR I PT ION.✓0--ft ,q&m..;~wj&,_ GENERATING PROCESS E COMPONENTS OF WASTE (PPM) COMPONENTS OF WASTE (PPM) R 601 T TAN 2<zv a O R PROPERTIES: SOLID HANDLING INSTRUCT S: WEAR APPROPRIATE ea OTI-Q GENEF4►TOR CERTIRES THAT THESE WASTES ARE RCRA AND CAUFOF*" NON- HAZARDOUS. W. -sm ON THE PffOFOAATION PROVK)ED eY THE GENERATOR ON THE SOIL ACCEPTANCE ' APP TFON THE A7 M LABORATORY DATA RY: DATE; 4" ' 7L- Signalure Prirt or T I Name -COMPANY NAME A PHONE NO. oll(/f ' H ADDRESS / Algr-e ;!Js d** SERVICE ORDER NO. ' A CITY, STATE, SIP r,!v?AWU& CA 9,14449 PICKUP DATE y =L V 9 f U TRUCK TYPE: DUMP ROLL OFF OTHER X11 L TRUCK LIC. # TRUCK ID # E TRAILER LIC. # W+C R DRIVER NAME] ' DRIVER SIGNATURE TIME LEFT JOB I LOAD # I P R JOB SITE REPRESENTATIVE O Name Sigradure E - , S DeiWer to twulty location: Main oifioe: r S CANDELARIA ENVIRONMENTAL Phone:(619) 696-8207 O 4001 Candelaria Lane FAX (619) 69"117 R Anza, CA 92539 24" EmWgericy (8 9157 r (909) 763-0129 1 ~y ..r ~ yr• '.r b • -1 • MO WEIGHMASTER CERTIFICATE TWIS. W To CMT" that the fCMav*Q deeerInd aommod- wiew0atwd, meamwed i or eowftd by a w+etohrea w. whose opnatum Is on Wo tirho is a re!oo Md iutl101iey of as ptex~ibed by Chapbrr 7 tcommeneing , Sel'[iOR 7z7aD1d I7Gr+aian 6 of tFta C~k omla Burines and Proiesainns cwh:. adm'remr+d bV dw Diriaion or U"wi m mu Manderde of the California Dqm ment of Food rtd ggriwldwe Delivered To & weighed At Candelaria Environmental - Weighmaster 40Q1 Candelaria Lane Anza. California 92539 909-7$3-0129 - ! B - ~ weighed For. API+t: r Manifest No. r f Carrier: ajrm~ 6 Truck License No.~~' Truck Trailer No. --T COMMOditr. Norrkardaw sa'tllul.t*felr I 9YEJo [ ] GROSS: 7- [ l TARE: r i NET TOMS: T ~ Candelaria Environme Weigh r Gross & Tare By: tuner Woo" r M R I I I CANDELARIA ENVIRONMENTAL iz 25244 BIQTREATMENT FACILITY NON-HAZARDOUS MATERIALS HAULING MANIFEST - NAME a~ dCAr r.J C- ADDRESS: - ti ' r•+ gZ PIi4NE -S G CITY, STATE, ZIP:, APN: 97- d 7 0 E N WASTE DFSCRIPTIO1N-✓0-- -&4Z S0. z GENERATING PROCESS Ar 5 T t CAS E COMPONENTS OF WASTE (PPM) COMPONENTS OF WASTE (PPM) R A 771W -<A2 o 4 l Dig 1 ' R PROPERTIES: SOLID 4 HANDLING INSTRL)cTI S:H A IATE CLOTHING -s GB4ERATOR CERTIFIES THAT THEW WAMS ARE FICRA NON+V0ARDOU1% AND C IA NCM- HAZARDUM BASED ON THE INFORMATION PROYK)ED BY THE GENERATOR ON IM f"L ACCFPTANOE APPLICATION AND THE ACCOMPANYING LABORATORY DATA } BY: DATE: - • i SWawre ! Print or Type F kM Name fr s -COMPANY NAME JbwV T ° PHONE NO. Alf ~"771 j H ADDRESS LV/ Aero< sp~r:~s rf'd~ SERVICE ORDER NO. A CITY, STATE. ZIP •tA-f aS PICK UP DATE ` 7T r U TRUCK TYPE: DUMP ROLL OFF OTHER L TRUCK LIC. # 5 Jr$e Z0 TRUCK 10 # E G , f,~~ TRAILER LIC. # I y''e r p DRIVER NAME p DRIVER SIGNATURE TIME LEFT JOB r LOAM # P R JOB SITE REPRESENTATIVE O Name SignoMire E - S Doliw to facility Locaboon: Main office: S CANDELARIA EWW40MNENTAL Phone:(619) 696-6207 i O 4001 Condelaria Lane FAX (619) 696-5117 R Anm CA •92539 24 Emergency (619) 9157 (909) 76"129 I 1 1 do 4 S 19 3 1 WEIGHMASTER CERTIFICATE 1 1 I' THIS *TO CMiFV thA the IW owing &%aiJmd co mmod ity was w.ig~.d. m..~d I oraoarftdb,,., ,maaea►.whoaasgnabmi~oethi'ee fe t~wiw~a..aco0r~.a ! authorty of arsuraey, as Dteacrieed M► {7rs~ar 7 {aornrn g w~tb Soatian 1i = d 1 Divispr 5 of the CafJorrw Business a nd Aoftalom God,, a ndrtia.rsd by ih QidOw i ON Mareuremanh Standards ofttw C.iforni■ D"m me"t of Food end AWientur, 1 1 Delhfflred To & Weighed At: t Candelaria Environmental - Weighmaster 4001 Candelaria Lane Anza, California 92539 ' 909-763-0129 Weighed For. ~a Aw's 1 AM: Q ? 2070 Manifest No. ~ 5k 1 Carver. ~u.~ •t4 y 611 1 Truck License No. - D f 1 ru G. r 1 Truck Trailer No. 1 Cmwwm K%tw MmMuKdcm SWIMNO d W ] GROSS: LI 111S 3 TARE: 1 NET TONS: ln• (a...- 1 Candelaria Environm - Wei aster - 1 Gross & Tare 1 By., a•.4► 1 Lam 1 1 1 1 1 1 I 25245 . CANDELARIA ENVIR MENTAL BIOTREATMENT FACILITY E NON-HAZARDOUS MATERIALS HAULING MANIFEST I F_3_0 pf5dL PHONE ~ " G A APN: E od ~-"A 2 sy s i, GENERATING PROCESS c•*•3 ~ N IPTION+~ CpMP(?NENTS OF WASTE (PPM) E OF WASTE (PPM) R A 4 T I 4 i R PROPERTIES-. SOLID ` HANDLING INSTRUCT NS: R A T u Ivo~+~- FAPPLICAMON -p I~~ ►+!t]N=W47AFiDQU3, AND C~I~JPOf3I+I RNTOR I8 THAT OR ATON pRpV l31f THE GENERATCM ON TW SOIL ACCEPTANCE DOUS. BASS O ON THE IN PDRA~lAT10N DATA AND THE AOCOMPAWM LA90RA I [)ATE: 15 BY SjgrwUe / Prim or Type FuIINww ! y ~l jjjllq 1 -ODMPANY NAM 0tuli'!P1-P *'f' i K 46~ SERVICE PHONE NO. DER NO- yo(r~ S•~?S- ADDRESS l~ ' 1 p CITY. STATE, ZIP f'!°~' pip( UP DATE 4 ROLL OFF OTHER - ~ U TRUCK TYPE: DUMP-2L- 4 TRUCK ID 0 1 L TRUCK LIC. -TRAILER LIC. ~ I wG 13 7 ~ i R DRIVER NAME DRIVER SIGNATURE ' TIME LEFT JOB ' 3 LOAD # Z- p R joa SITE REPRESENTATIVE Name - Signature E S Deliver to facility LOcafion: Main p}~ oe:ioe: itioe: 6.96- 7 ' S CANDELARIA ENVIRONLIENTAL FAX (619) 696-5117 R An m X-92 aria lane 24w EMW9encY (619) 899-9157 R -Anna, CA 92539 ' (909) 763-0129 ► ► ► M(961tE ► onre LABORATORIES INC. ► ► 2/3/00 ► Enviromega Consultants 16732 Palmero Drive ► San Diego, CA 92128 Project Name: Don Hubbard Contracting ' Project No.: BOC-98-065 Attention: Mr. Dave Eminhizer Mobile One Laboratories received and analyzed the following sample(s): ► Date Received Quantity Matrix Date Received Quantity Matrix ► 1/21/00 1 soil 1 ► The samples were analyzed by one or more of the EPA methodologies or equivalent methods as specified below. ' TPH CA DHS "Total Petroleum Hydrocarbons" BTEX EPA Method 8020 1 TRPH EPA Method 418.1, modified for soils ' Voss EPA Method 8260 The results are included with a summary of the quality control procedures. 1 Please note that the symbol "nd" indicates a value below the reporting limit for the particular compound in the sample. Flags qualifying the data are explained in footnotes on the same report page as they occur. ' Please feel free to call us to discuss any part of this report or to schedule future projects. ' Sincerely, ' R ecca L. Johnson J E. Picker, Ph.D President Lab Director ' Mobile One laboratories is certified by the California Department of Health Services (certificate #s: ' 1194,1561,1921,2088,2278), and the Arizona Department of Health Services (certificate #t: AZM466). ' NOL Project # E0012100B ' 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029 9 PHONE (760) 735-3208 • FAX (760) 735-2469 r r M(961tFm r one LABORATORIES INC r Report Summary 1 r Client: EnvirOmega Consultants Matrix: soil Project: Don Hubbard Contracting -Units - mg/kg Method = TPH TPH TPH TRPH r Analyte - Gasoline Diesel ' C6-CI2 C13-C24 C26-C40 ' Detection Limit - 10 10 10 10 SAMPLE I.D. Date Analyzed: 1/21 / r HC-soil4/20 1,300 1 Date Analyzed: 2/3/00 r HC-soil-1120 328 390# 800 r 1 r r r 1 1 1 1 r 1 1 Footnotes: nd = Not found above the detection Imit. & = Gasoline range organics not identified as gasoline. # = Diesel range organics not identified as diesel. 1 • = Sample dilution was required. Detection limits were adjusted accordingly. r E = Analyte amount exceeds calibration curve. Amount estimated. This compound has been screened by EPA method 8020. Any positive results should be r confirmed by a second analysis. = A second analysis has been performed on this sample by Mass Spectrometry. The results are as indicated. Analyses performed by: Bret Hutchinson ' E0012100B Page 2 of 4 ' 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029 • PHONE (760) 735-3208 • FAX (760) 735-2469 1 i I I LABORATORIES INC. QC Summary 1 1 Client: EnvirOmega Consultants I Project: Don Hubbard Contracting Matrix: soil I Method TPH TPH TRPH MTBE Benzene Toluene Ethyl- Xylenes gasoline diesel benzene APR - % QC Limits (67-125) (67-125) (75-126) (60-125) (60-125) (59-125 (52-125) (60-127) RPD - % QC Limits <30 <30 <30 <30 <30 <30 <30 <30 I Date Analyzed: 1/21/00 Spike Level (mg/kg) 82 MS A Amount Found 81 I MSD A Amount Found 79 APR - % 97.6 RPD-% 2.5 Date Analyzed: 2/3/00 I Spike Level (mg/kg) 151 251 LCS Amount Found 150 255 LCSD Amount Found 156 240 1 APR - % 101.3 98.6 RPD - % 3.9 6.1 1 1 1 1 1 1 I I ' 1 I Calibration verification was within acceptable limits. I I i I E0012100B I I Page 3 of 4 I 148 SO. VINEWOOD STREET 9 ESCONDIDO, CA 92029 • PHONE (760) 735-3208 FAX (760) 735-2469 M(9131ts one LABORATORIES INC. QC Summary Method Blanks Client: EnvirOmega Consultants Matrix: soil Project: Don Hubbard Contracting Units - mg/kg Method a TPH TPH TRPH <------------8020--------------> Analyte a Gasoline Diesel MTBE Benzene Toluene Ethyl- -Xylenes C`-C12 C13-C2A benzene Detection Limit - 10 10 10 0.1 0.05 0.05 0.05 0.15 SAMPLE I.D. Date Analyzed: 1/21/00 blank Horibe #1 nd Date Analyzed: 2/3/00 blank GC#6F nd nd blank GC#6R nd nd 10 1 1 r E00121008 Page 4 of 4 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029 • PHONE (760) 735-3208 FAX (7601 735-2469 4-4 lb O Jao°p0 a o Al/~ X66, p4 z z z 40 Io ~ z VC) A rs 1 ~ f• 7J09 0 N t C ~ N R F o N ~ ~ ❑ 00 0~0 ~o W ~ v ,.i O cn T 'u g U 10, ~ V M °a ~ e rl ~ •-1 o 3 u o U C o U y N n Q y G. C G e ~ v 'v'~ r~ v, U AG c r~ SEP-28-2000 01:33 FROM TO:1 619 676 0750 P.Id1~4~lOb! 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CBJ LMM UWAS &A 000-U r r r r M r r w r APPENDIXB r r r r r N M M w MI M M i 1 1 EnvirOmega Consultants 16732 Palmero Drive San Diego, California 92128 I (858) 676-0046, Fax (858) 676-0750 I June 21, 1999 I County of San Diego ILE Department of Environmental Health 1 Site Assessment and Mitigation Division P.O. Box 129261 San Diego, California 92112-9261 1 Attention: Mr. Scott Weldon 1 Subject: Work Plan for Environmental Services Don Hubbard Contracting 1 46 Encinitas Boulevard, Encinitas, California I Unauthorized Release No. H03635-001 EnvirOmega Consultants Project No. EOC-98-065 Mr. Weldon: 1 At the request of Mr. Don Hubbard, representing Don Hubbard Contracting, EnvirOmega 1 Consultants (EOC) has prepared this work plan proposing environmental services for the subject site located at 46 Encinitas Boulevard in Encinitas, California. The location of the site is presented on the Vicinity Map, Figure 1. 1 Background 1 1 On December 3, 1998, two underground storage tanks (USTs), one storing gasoline and one storing diesel, were removed from the site. Each 1,000 gallon UST was removed from a separate 1 excavation with two soil samples collected from each excavation under your supervision and at your direction as a representative of the County of San Diego Site Assessment and Mitigation Program 1 (SAM). While neither soil sample collected from the excavation created by the removal of the 1 unleaded gasoline UST 'contained detectable concentrations of total petroleum hydrocarbons (TPH), some soil staining and hydrocarbon odors were noted in the excavation. Of the two soil samples 1 collected from the excavation created by the removal of the diesel UST, one sample contained 3,200 1 milligrams per kilogram (mg/kg) of TPH-diesel and the other did not contain a detectable concentration of TPH. During the removal activities, you noted the presence of a "small amount of 1 diesel floating on surface of groundwater" in the excavation created by the removal of the diesel 1 UST. Following the removal of the USTs and your departure from the site, but with your concurrence and 1 in accordance with an approved "post tank removal work plan", EOC assisted with the excavation of approximately 150 cubic yards of clean and contaminated soil from the excavation created by the removal of the gasoline UST (a few cubic yards of soil were removed from the diesel UST). During the excavation of the soil, it became apparent that the soil removal activities should be discontinued and that the excavations should be backfilled. This conclusion was based primarily on the fact that some hydrocarbon odors continued to emanate from the gasoline UST excavation and some soil staining was still apparent on the excavation sidewalis. Additionally, the "post-tank removal work plan" limits the amount of soil that can be excavated following the tank removal effort and the removal of that quantity of soil was attained without resolution of the contaminant impact. It should be noted that while soil removal was discontinued, the observed soil conditions did not necessarily suggest extensive contamination. Instead, EOC, with Mr. Hubbard's concurrence, concluded that to ' avoid the possibility of removing excessive amounts of soil, soil removal should be stopped and replaced with an assessment effort, including soil borings. Within a day of the removal of the tanks, Hubbard Contracting removed a few cubic yards of soil from the diesel UST excavation, primarily to 1 I 1 Mr. Weldon June 21, 1999 Page 2 remove the observed diesel fuel from the surface of the groundwater, and placed gravel, filter fabric and clean soil (to the ground surface) in each excavation. In April 1999, under non-hazardous waste manifest, Dupree Trucking transported the stockpiled soil to Candelaria Environmental for disposal. Based on the analytical results from the tank removal, SAM issued Unauthorized Release No. H03635-001 for the site and directed Mr. Hubbard to proceed with assessment activities. Technical Approach ' Based on the above information and conversations with the property owner, EOC proposes the advancement of soil borings in both the areas where the gasoline and diesel USTs were formerly located. In an attempt to complete the assessment of the extent of petroleum hydrocarbon impact to the soil at the site, soil borings must be located in the area of each identified release of contaminants such that an approximate volume of contaminated soil and an average contaminant concentration. ' can be estimated for each area, as appropriate. Additionally, assessment of possible contaminant ' impact to the groundwater will be completed using a Hydropunch or similar acceptable method. ' Based on the fact that water was observed in the excavation at the time of the UST removal activities, we anticipate encountering groundwater at an approximate depth of 8 feet below ground surface (bgs). Each proposed boring should be extended approximately 5 feet into the groundwater ' with soil samples collected above and below the groundwater surface with selected soil samples and groundwater samples analyzed from each boring. ' The Site Plan, Figure 2, presents the proposed locations for eight soil borings. Borings BG1 through BG4 should be advanced in the area of the former location of the gasoline UST. Borings BD1 through BD4 should be advanced in the area where the diesel UST was located. 1 EOC proposes the collection of 7 soil samples from each of the borings starting at a depth of 5 feet ' bgs and collecting samples continuously to a depth of approximately 15 feet bgs. For vertical contaminant delineation, the consultant will obtain two consecutive soil samples from each boring (below the vadose contaminated zone or the water table, as applicable) that do not contain detectable concentrations of petroleum hydrocarbons. Depending on the results obtained from the collection and analysis of the groundwater samples, the ' installation of temporary groundwater monitoring wells on the site may be required. If it is determined that the groundwater has been impacted by petroleum hydrocarbons at concentrations of ` concern, at least three groundwater monitoring wells should be installed on the site. The locations of the wells (likely to be constructed by the conversion of existing borings) will be determined based on the results of laboratory analysis of the groundwater samples and following regulatory consultation. Note that the site is located in an area having no existing or potential uses for groundwater and is ' located more than 1000 feet from ocean waters. Scope of Services Based on SAM requirements, EOC proposes the following activities. Task I - Prefield Activities. These activities will be performed in preparation for the completion of the planned field activities. • Prepare and submit this work plan to SAM detailing the proposed activities. A Community Health and Safety Plan is attached to this work plan as required by SAM. Mr. Weldon June 21, 1999 Page 3 • Prepare a site specific Health and Safety Plan that identifies potential health and safety hazards anticipated during the performance of the field activities. The plan will be prepared before field j activities begin and will be reviewed by all field personnel. • Prepare and submit a boring permit application to SAM for the excavation of eight borings in } accordance with applicable well ordinances. Notify Underground Service Alert, as required by law, and obtain a "ticket number" at least 48 l hours prior to the commencement of field activities. Task II - Boring Advancement and Soil and Groundwater Sample Collection and Analysis. Eight borings will be advanced on the site with soil samples collected from each boring. The proposed locations for the borings are presented on the Site Plan, Figure 2. _j Advance each exploratory boring to an approximate depth of approximately 15 feet bgs using a drill rig equipped with hollow-stem augers. The soil cuttings, if contaminated, will either be placed in 55-gallon drums and stockpiled on site for proper disposal by the client. Note that if TPH contamination is encountered in any of the perimeter borings, additional borings may be excavated beyond those proposed, for the purpose of completing the contaminant delineation effort. The consultant will contact SAM if this additional effort is . necessary Collect approximately 7 soil samples from each boring using a split spoon sampler (2-3/8-inch inside diameter and 3-inch outside diameter) and place the soil into laboratory prepared glass jars. Soil samples will be collected at locations based on visual observation, corresponding to l depths where lithological changes occur, from the capillary zone, and below the groundwater surface, as appropriate. Each jar will be sealed, labeled, and transferred to an on-site California p.' certified mobile laboratory for analysis. • Analyze selected soil samples collected from the borings for the presence of TPH (gasoline and 3 diesel ranges) using the DHS-TPH Method. It is anticipated that four soil samples per boring will be analyzed for TPH from each of the seven borings. At least one soil sample (containing the highest TPH concentration) collected from each of the borings, will be analyzed for the presence of benzene, toluene, ethylbenzene, and xylenes (BTEX) by EPA Method 8020. The presence of methyl-t-butyl ether (MTBE) will be checked during the EPA Method 8020 analysis and if present, will be confirmed using mass spectrometry. The soil sample collected from the borings containing the highest TPH-gasoline concentration will be analyzed for organic lead. The soil sample containing the highest TPH-diesel concentration will be analyzed for the presence of polynuclear aromatic hydrocarbons (PNAs) using EPA Method 8270. • Collect groundwater samples (using a Hydropunch or similar acceptable method) from each of ' the boreholes following regulatory guidelines. The water samples will be placed in the appropriate laboratory prepared containers and transferred to an on-site California certified mobile laboratory for analysis. The groundwater samples will be analyzed for TPH, BTEX and MTBE using the DHS-TPH Method and EPA Method 8020, respectively. Positive MTBE results will be confirmed using mass spectrometry. The water sample containing the highest TPH- gasoline concentration will also be analyzed for total lead and the water sample containing the highest TPH-diesel concentration will be analyzed for PNAs using EPA Method 8270. Note that if TPH contamination is present in the borehole water samples, additional borings may be advanced so that delineation of petroleum hydrocarbon contamination to the groundwater will be completed. Follow quality assurance/control procedures (QA/QC) during all sampling activities. Soil and ' groundwater samples will be. placed into laboratory prepared containers and submitted to an on Mr. Weldon 1 June 21, 1999 ' Page 4 site California certified mobile laboratory for analytical testing. Chain-of-custody documentation ' will be provided for all of the samples. ' Note that three borings advanced on the site may be converted into groundwater monitoring wells. Each well would be constructed of two-inch Schedule 40 PVC casing and 0.020 inch slotted well screen. While installation of wells during this phase of work is a possibility, this work plan ' does not propose the installation of the wells unless conditions encountered necessitated exercising this option. ' Task III Preparation of the Assessment Report. Following completion of Tasks I and II, a report that summarizes the results of the field activities and provides recommendations, as appropriate, will be prepared and submitted to SAM. • Prepare and submit a letter to SAM detailing the boring excavation activities (including boring ' logs and laboratory data) in accordance with San Diego Well Ordinance No. 4286. • Prepare and submit an assessment report following the completion of Tasks I and II. The report ' will detail-the field-activities-and-request regulatory-closure of the site, if appropriate, or will provide recommendations for additional environmental services. The report will follow the guidelines presented in the most current version of the SAM Manual. PROJECT SCHEDULE It is anticipated that a boring permit will be-submitted to SAM-within a few weeks of SAM approval of the work plan. The drilling activities will be completed following a two week waiting period (as required by SAM). The field activities should take one to two days to complete with the report b completed and submitted to SAM within six to eight weeks of the completion of the field activities. ' If there are any questions, please call me at (858) 676-0046. r cerely, 1 Dave Eminhizer Environmental Scientist r EnvirOmega Consultants ' Attachments: Figure 1, Vicinity Map r Figure 2, Site Plan r Community Health and Safety Plan r cc: Mr. Don Hubbard r r r r r r r r r d' N o3 s" 0 » Q # ' v Q1 Jfll a QNII N U ro• YY 0 t U d ro •U vi ' 4 #I~1t3 -S MO L W k" t' V W CPO 0 a W 0 <u 00 U LL 4 1 1 t k' ~ r 4 E 0 0 ~ N C1 t" ~ v 1 1:. 1 Z Z ~ 0 = Y 1 CL F= P _ u 1 ZQ o oY zo O w uU ZQ z ~ V Z L U u J Q z W z =1 to O Z 0 O Z W m u >o m W CL m~ CL ma 0 ~ a a u u? Z 's 'a J oUu r/ cc Z Z 1 z----------------- Q W 1 Iol m v Cc ~ 1 loges = 1 0 ' ILLD< to 1 N 1 ' } zN 1 !2 J 1 - ° Z N W OC o 1 Do 1 LLJ Vz 1 cn o 1 oe 1 < a LAJ a o o~ U i zN a 1 0 0 / o y 1 k W 0 co Qu tn w r j o . I I ~ 0 < W • N s~ co z N it 1 1 1 1 i 1 1 1 COMMUNITY HEALTH AND SAFETY PLAN 1 FOR 1 DON HUBBARD CONTRACTING 1 1 46 ENCINITAS BOULEVARD 1 ENCINITAS, CALIFORNIA 1 1 1 1 1 1 1 1 1 1 1 1 Prepared by 1 1 1 ENVIROMEGA CONSULTANTS 1 16732 Palmero Drive 1 San Diego, CA 92128 1 1 1 1 1 1 JUNE 1999 1 1 1 1 1 Don Hubbard Contracting Community Health and Safety Plan June 21, 1999 1 1 1 ' DON HUBBARD CONTRACTING 46 ENCINITAS BOULEVARD, ENCINITAS, CALIFORNIA EMERGENCY NOTIFICATION REFERENCE Emergency Response - Fire/Police/Ambulance 911 Hospital - Scripps Memorial Hospital, Encinitas (760) 753-6501 Address: 354 Santa Fe Drive, Encinitas, California Directions: Take Encinitas Boulevard east to Interstate 5 (1-5). Go south on 1-5 to Santa Fe Drive. Take Santa Fe Drive west to the hospital. The hospital will be on the north side of Santa Fe Drive. 543-6000 r Poison Control Center . 1-800-876-4766 County of San Diego Dept. of Health Services Site Assessment and Mitigation Division (SAM) (619) 338-2222 Scott Weldon, SAM Specialist (619) 338-2539 Client - Don Hubbard Contracting ' Attn: Mr. Don Hubbard (760) 753-1157 Operations Consultant EnvirOmega Consultants Dave Eminhizer (858) 676-0046 Standard Procedure for Reporting Emergencies Provide the following information when calling for assistance in an emergency situation: 1. Name, phone number and location of person making call. . 2. Number of person(s) exposed or injured. 3. Nature of emergency. 4. Actions already taken. 5. Remain on the phone unless instructed otherwise. Enviromega Consultants Page 1 of 2 r Don Hubbard Contracting Community Health and Safety Plan 1 June 21, 1999 INTRODUCTION This Community Health and Safety Plan has been developed specifically for the assessment activities including the advancement of borings and the collection and analysis of soil and groundwater samples to be performed at the Don Hubbard Contracting facility in Encinitas, California. It addresses potential public health concerns and provides guidelines to reduce the potential for exposures and/or injuries to the surrounding public from the activities to be performed at the subject site. The provisions in this plan are based upon information contained within documents provided to EnvirOmega Consultants by the representatives of Don Hubbard Contracting. SITE LOCATION The project site is located at 46 Encinitas Boulevard in Encinitas, California. DESCRIPTION OF ACTIVITIES The activities -to be performed on this project consist of the following: (1) Advancement of borings using a drill rig, and the possible installation of groundwater monitoring wells. The risk to public health should be minimal. Ambient air monitoring will be performed to ensure a safe environment for the field personnel and those that will be in the vicinity of the activities. The public will be kept an appropriate distance from the work being performed. 1 (2) Collection and analysis of soil and groundwater samples from the borings. An on-site mobile laboratory may be used to perform the analyses. There should be minimal risk to public health during these activities. POTENTIAL ENVIRONMENTAL EFFECTS Gasoline and its constituents and diesel and its constituents are contaminants of concern at the site. Potential chemical, physical, and operational hazards identified by the consultant and described in this document are not anticipated to cause any unsafe or unhealthy environmental effects to the public. The public will be excluded from the area of the drilling activities and the consultant will perform ambient air monitoring to ensure that the hydrocarbon vapors are not affecting the public, either on site or migrating off site. LIMITED PUBLIC NOTIFICATION Since the subject property is currently occupied only by Don Hubbard Contracting, the limited public notification program will consist of posting a public notice on the perimeter of the work area detailing 1 the activities being performed on site and advising the public not to enter the subject area. The advancement of the borings and the collection and analysis of soil and groundwater samples should not present a risk, at levels of concern, to the public or to others located on the adjacent properties. Note that the area proposed for assessment is generally located in the central area of the subject property and that adjacent properties are located at a distance such that hydrocarbon vapors at detectable levels are not likely to migrate to those properties. EnvirOmega Consultants Page 2 of 2 1 1 • 1 GARY ERBECK DEPARTMENT OF ENVIRONMENTAL-HEALTH RICHARD HAAS 1 DIRECTOR LAND AND WATER QUALITY DIVISION ASSISTANT DIRECTOR P:O. BOX 129261,. SAN DIEGO. CA 92112-9261 1 (619) 338-2222 FAX (619) 338-2377 1 1 July 1, 1999 1 1 Don Hubbard Contracting Company City of Encinitas Attn: Mr. Don Hubbard Attn: Mr. Bob Nelson 1 46 Encinitas Boulevard Director of.Public Works 1 Encinitas, CA 92024 505 S Vulcan'Avenue Encinitas;-:C1 '92024 1 Dear Mr. Hubbard and Mr. Nelson: 1 UNAUTHORIZED RELEASE.#H03635-001, WORKPLAN APPROVAL DON HUBBARD CONTRACTING COMPANY 1 46 ENCINITAS BOULEVARD, ENCINITAS, CA 92024 This letter has been prepared in accordance with the requirements set 1 forth in Title 23 (State Undergtound Storage Tank Regulations), 1 Division- 3,--and.Amendment---to Chapter 16, Article 11, Section 2722. The Responsible Parties-of the status purpose of this letter is to notin3i 1 of the Workplan received by th Diego County' Site Assessment and 1 Mitigation Program (SAM) on Jun 999. orkplan, dated June 21, 19 prepared by David Eminhizer of The W 1 Enviromega Consultants, covers one of the following phases of corrective action: ` Preliminary Site Assessment ( ) Soil and Water Investigation (X) Corrective Action Plan ( ) ' Verification Monitoring ( ) Interim Remedial Action ( ) The workplan proposes to advance eight soil borings in- the area where the former gasoline and diesel USTs were located. The workplan also proposes. to collect seven soil samples from each boring, starting at a depth of t five feet below grade (fbg) and extending to a depth of 15 fbg. Two of the seven samples are also proposed below the vadose zone or water table, ' for purposes of completing vertical delineation of contaminated soil. Groundwater samples are to be taken from each boring, to assess the extent. of groundwater petroleum hydrocarbon contamination. If TPH contamination is encountered, in perimeter borings, additional borings are proposed 'for the purpose of completing contaminant delineation. SAM will be contacted if this additional effort is necessary. i "Prmm ion Gma Fiat" 1 1 Mr. Hubbard and Mr. Nelson = 2 - July 1, 1999 ' The workplan proposes to convert three borings to groundwater monitoring wells, should it make sense to exercise this option. The Workplan has been: ( ) approved. ` ( ) disapproved. Call the undersigned for further instructions. (R) approved with the following changes or conditions: i 1. Soil samples will be collected beginning at 5 fbg and every two feet thereafter. Using visual evidence of staining or odors, collect samples at the capillary fringe and/or wherever it is obvious soil ' is impacted by petroleum hydrocarbons. 2. Using sample results/observations from the first couple of borings ' - - -it--may-be possibl-e-to-coll-ec-t #-ewer-samples- from, -or--run--lab tests on the samples taken from the additional six borings. For example, it may not be necessary to sample at 5 fbg and 15 fbg in the additional borings if there was no evidence of contamination at these depths in the first two borings. 3. If more than--eight--bor-ings-are- to-be -done,-conttct -SAM-=prior to advancing additional borings. Also contact SAM if the decision is made to install groundwater monitoring wells. 4. Run EPA Method 8260 to test for MTBE on soil sample with highest T.PHg'concentration from each boring. Also run-8200 and test for t MTBE, on the water sample with highest TPHg concentration. 5. Contact Scott Weldon at the phone number below, 72 hours.prior to conducting the proposed site assessment work, and let me know the date and time that proposed work will commence. This approval is valid for six months from the date of this letter: -Keep this letter for your records as it may be required for corrective action j cost reimbursement under Senate Bill 2004 (California Health and Safety ' Code, Division 20, Chapter 6.75, Article 6). The need for further site characterization and mitigation actions will ' be determined following evaluation of the written report. If you have any questions, please call me at (619) 338-2539. Sincerely, - SCOTT WELDON, Project Manager ` Site Assessment and Mitigation Program SW : na ' cc: David Eminhizer, Enviromega Consultants ' WP/H036351WPLDH M r r [t APPENDIX C r r~ rr ~r ' ~~°rva u rye o "on" n r, o ~Moccc~~~ PERMIT # W98748 A.P.N. # 760-165-01 EST # H03635 COUNTY OF SAN DIEGO DEPARTMENT OF ENVIRONMENTAL HEALTH LAND AND WATER QUALITY DIVISION MONITORING WELL ANLlORE~r`15`RIOI"{IAND DESTRUCTION PERMIT SITE NAME: DON SS: {i SITE AD D RE PERMIT F PERMIT AIPI'RO 200 0 a. PERMIT :=;~5 26, 20 PE 1 . 1. Alk,10001 destroyed in accirdaince with Department of Water Repel Biti<.74-81 and 2. A: Was'. AN rntzst be :contained and dts.. d o erl 3. S nbmit.:c 1 for b t a rato data. otli'soil and : t r<wrth th It e bo rY $rottndwa e , ewe ld'logy::r>:» . i 4. S +ec~ed.~ . cti0n -P ::.B-' a . 1# C. 2 l~e 1 { vLt'~ 1 5. All w" 1 r ~ ced in d r~ s in st be and stored a ~ ctf 't~l ~:e~'I~I. a an u~ "etetl~~ ~1VI Manual in: :x.. i e t con 1 Pa 5 a :::::::i:::'::%•i'~iii ii:+'::::'::::: ' •i:•i::}i::y::+::y::%i:::::::::?::j :::::'i':'?::~:ii`:•:;:;: {i:i:;:;::'•• 6. This office 4::: ' n e....jiase contact Marisue at (619 ' Crystal ) . :'>Yfii:CC! ijii:r'::'{ if ~•••~%•'.E•ii::ji: : i(:;±i:; 7. This office must be ~:;iv'>::~..::advart"``'~`"•'~~~t~.' ` i •'•n::: • f:: ~€~l ~ . tT''"' ..:~~>T'1• ease contact Marisue Crystal at 619 338-2339. NOTE: This permit does not constitut oval of a workplan as defined in Section 2722 of Article 11 CC.Z)R, Title 23 Work lans are required for all unauthorized release investi tio~s i an e o Co APPROVED BY: DATE: 1/27/00 Notified: G/S'~ ~1y1 ' ~"jSv EnvirOmega Consultants 16732 Palmero Drive San Diego, California 92128 (858) 676-0046, Fax (858) 676-0750 January 17, 2000 County of San Diego Department of Environmental Health Site Assessment and Mitigation Program P.O. Box 85261 ' San Diego, California 92186-5261 ' Attention: Ms. Madsue Crystal Subject: Transmittal - Permit Application for Exploratory Borings ' Don Hubbard Contracting 46 Encinitas Boulevard, Encinitas, California Unauthorized Release No. H03635-001 ' Assessor's Parcel No. 760-165-0100 ' EnvirOmega Consultants Project No. EOC-98-065 ' Ms. Crystal: Pursuant to the San Diego County Code, Sections 67.440 and 67.421, and the California Department ' of Water Resources Bulletins 74-81 and 74-90, EnvirOmega Consultants (EOC) is enclosing herein a boring permit application for the advancement of nine borings, the collection of soil and groundwater samples from the borings and the possible conversion of three of the borings into I groundwater monitoring wells. The drilling activities will be performed on the former Hubbard Contracting (Hubbard) site located at 46 Encinitas Boulevard, California. The location of the site is presented on the Vicinity Map, Figure 1 with the proposed locations of the botings presented on the Site Plan, Figure 2. i Back round - On December 3, 1998, two underground storage tanks (USTs), one storing gasoline and one storing diesel, were removed from the site. Each 1,000 gallon UST was removed from a separate excavation with two soil samples collected from each excavation under the supervision and direction of Mr. Scott Weldon, representing the County of San Diego Site Assessment and Mitigation Program (SAM). Following the removal of the USTs and the departure of Mr. Weldon form the site, but with Mr. Weldon's concurrence and in accordance with an approved "post tank removal work plan', EOC assisted with the excavation of approximately 150 cubic yards of clean and contaminated soil from the excavation created by the removal of the gasoline UST (a few cubic yards of soil were removed from the diesel UST). During the excavation of the soil, it became apparent that the soil removal activities should be discontinued and that the excavations should be backfilled. This conclusion was based primarily on the fact that some hydrocarbon odors continued to emanate from the gasoline UST excavation and some soil staining was still apparent on the excavation sidewalls. Additionally, the "post-tank removal work plan' limits the amount of soil that can be excavated following the tank removal effort and the removal of that quantity of soil was attained without resolution of the contaminant impact. Based on the analytical results from the tank removal, SAM issued Unauthorized Release No. H03635-001 for the site and directed Mr. Hubbard to proceed with assessment activities. Scone of Services - On June 21, 1999, EOC submitted a work plan to SAM proposing the excavation of eight borings on the site and the possible conversion of three of the borings into groundwater monitoring wells (the installation of wells is not planned at this time). We anticipate Ms. Crystal January 17, 2000 Page 2 encountering groundwater at an approximate depth of 8 feet below ground surface (bgs) and propose advancing each boring approximately 5 feet into the groundwater with soil samples collected above and below the groundwater surface with selected soil samples and groundwater samples analyzed from each boring. Mr. Scott Weldon, SAM specialist assigned to the site, approved the scope of services detailed in the work plan. During December 1999, while performing site demolition activities, Hubbard encountered and removed an oil trap (concrete sump) from an area located approximately 30 feet r south of the former location of the gasoline UST. The approximate former location of the oil trap is presented on Figure 2. In accordance with Mr. Weldon's request, EOC directed Hubbard to clean and dispose of the oil trap (concrete sump), and added an additional boring to the proposed scope of services (the boring to be advance in the area of the former location of the concrete sump). Soil and groundwater samples collected from this boring will be analyzed for the same constituents as the other borings. In addition to these analyses, some of the samples will be tested for total recoverable hydrocarbons (TRPH) by EPA Method 418.1 and volatile organic compounds by EPA Method 8260, as appropriate. The Site Plan, Figure 2, presents the proposed locations for nine soil borings. Borings BG1 through BG4 will be advanced in the area of the former location of the gasoline UST. Borings BD1 through BD4 will be advanced in.the area where the diesel UST was located and boring BOT61 will be advanced in the area of the former location of the oil trap (concrete sump). Depending on the results obtained from the collection and analysis of the groundwater samples, the installation of temporary groundwater monitoring wells on the site may be required. If it is determined that the groundwater has been impacted by petroleum hydrocarbons at concentrations of concern, at least three groundwater monitoring wells will be installed on the site. The locations of the wells (likely to be constructed by the conversion of existing borings) will be determined based on the N results of laboratory analysis of the groundwater samples and following regulatory consultation. Note that the site is located in an area having no existing or potential uses for groundwater and is located more than 1000 feet from ocean waters. 1' . In accordance with well permit requirements, EOC will submit a letter detailing the results of the drilling and sampling activities to SAM following the completion of the field activities. The permit application including a check for the permit fee of $870.00 is enclosed. We plan to perform the drilling during the week of February 14, 2000. Should you have any questions concerning the contents of this transmittal, or we may be of further service, please contact the ` undersigned at your convenience at (858) 676-0046. Sincerely, Cam o David A. Eminhizer Environmental Scientist EnvirOmega Consultants attachment(s) Figure 1, Vicinity Map Figure 2, Site Plan Well Permit Application M cc: Mr. Don Hubbard, Hubbard Contracting a""' rti PERMIT APPLICATION c r ' : , - i s n PERMTT#: W 7 O' 7 yr ' . GROUNDWATER SAM cAS> iN Ha3~S y\~' ` AND DATE RECEIVED: r 1 ;'0 n-z VADOSE MONITORING WELLS FEE PAID: X870- V'Ju AND EXPLORATORY OR TEST BORINGS r . i JAN 3 2 is lo ' A. RESPONSIBLE PARTY Don Hubbard Contracting one (760) 736-3241 Mailing Address P.O. Box 230577 _ City tas State CA Zip cun21-0 977 Contact Person Don Hubbard Phone (fib) 735-324`I' ext B. SITE ASSESSMENT PROJECT IF APPLICABLE #H 03635-001 1 ' C. CONSULTING FIRM EnvirOmega Consultants Mailing Address 16732 Palmero Drive City San Diego State CA Zip 92128 Registered Professional Rod Reeve Registration # RG 4941 (RG, RCE, CEG) Contact Person Dave Eminhizer Phone (858) 676-0046 ext. 1 ' D. DRILLING COMPANY West Hazmat Drilling Corp C57;~ 554979 Phones 61 9) 686-5800 t Mailing Address 3620 Kurtz Street City San Diego State CA Zip 92110 1 ' E. CONSTRUCTION INFORMATION r TYPE OF WELLS/ MATERIALS TO BE USED PROPOSED CONSTRUCTION ' BORINGS TO BE Estimated ground water depth 8 ft. CONSTRUCTED CASING SEAL # Not Applicable CEMENNot TSpppp1EALicable to ❑ Groundwater Type El Neat Cement ' ❑ Vadose Gauge ❑ Cement &Bentonite BENTONITE SEAL to g Diameter F-1 Sand-Cement FILTER PACK to ( yd PERFORATION to ' ❑ h_ydr~punch - - Well Screen Size O 93 Bentonite ther Filter Pack ❑ Other (Specify) PROPOSED DRILLING DATE 2/15 - 2/16/2000 NUMBER OF WELLS TO ' BE DESTROYED # 0 NOTE: t Drilling Method Auger ❑ Air Rotor For wells with multiple completion ❑ Mud Rotary attach a well construction diagram ` ❑ Percussion ❑ Other ` I agree to comply with the requirements of the current Site Assessment and Mitigation Division Manual, and with all ordinances and laws of the County of San Diego and the State of California pe ag-te-+vell/boring construction and destruction. 1/18/2000 DRILLER'S SIGN 'RE DATE Within 30 days of compl sh the Monit'Well Plan Check desk with a complete and accurate well/boring log. I will certify the deli ns r 5!!! of the well/borings in accordance with the permit application. 1/18/2000 RG/RCE/CEG SIGNATURE DATE 1 County of San Diego ~DEH:S AM-9060 (Rev. 10/98) Page 1 of 5 Department of Environmental Healdh 1 1 F. SrT'9 ,MOR.'9IATION 1. ASSESSOR'S PARCEL NUMBER 760-165-01 Site Name Don Hubbard Contracting ' Site Address 46 Encinitas F31vd . City Encinitas Zip 92024 PROPERTY OWNER _ City of Encinitas Phone _790-6 - 6 6 Mailing Address 505 S. Vulcan Avenue City Encinitas State _~,'A- Zip 92024 NUMBER OF WELLS 9-, TYPE OF WELLS Rnri nCLc p 2. ASSESSOR'S PARCEL NUMBER Site Name ' Site Address City Zip PROPERTY OWNER Phone ' Mailing Address City State Zip ' NUMBER OF WELLS TYPE OF WELLS 3. ASSESSOR'S PARCEL NUMBER Site Name City _ Zip Site Address I PROPERTY OWNER Phone Mailing Address City state Zip I NUMBER OF WELLS TYPE OF WELLS 1 4. ASSESSOR'S PARCEL NUMBER I Site Name Site Address City Zip 1 PROPERTY OWNER Phone Mailing Address City State Zip NUMBER OF WELLS TYPE OF WELLS G. FEES: 1 ' BASE FEE INCLUDES FEE CODE FIRST BORING/WELL FEE FOR ADDITIONAL j Groundwater MW s Vapor Extraction MW s Vadose Wells $150.00 x $150 - I 2 Boring/Hydropunch 7 Geo robes etc. $150.00 8 x $90 20 1 3 Destruction $150.00 x $140 = 1 County DEH:SAM-9060 (Rev. 10/98) Palo 2 of S Sea Dish ' I Departtneat of Envimnma atel Health 1 I PERMIT APPLICATION FOR GROUND WATER AND VADOSE MONITORING WELLS EXPLORATORY OR TEST BORINGS $ For well destruction, complete only #1 below. $ Well design, logging and construction must be supervised by a Geologist, Engineering. Geologist or Civil Engineer who is registered or certified by the State of-Calif mid: $ Well driller must have an active C-57 License and current $2,500 bond with the County. $ Provide allot plan giving location of property lines, existing improvements such as structures, underground tanks, underground utilities, undergroundd piping, and the proposed monitoring and/or observation wells. $ If applicable, provide a signed copy of the Property Owner Responsibility form for each property listed in Section "F". ' • Provide encroachment/excavation permit and/or traffic control permit for work to be done in street or public right of way. 1. If wells are to be destroyed, provide a description of method of destruction. No wells to be destroyed. 1 1 2. What is the proposed purpose of the welt/boring? Delineation of petroleum hydrocarbon 1 impact to soil and groundwater. 1 1 1 3. What procedures will be used to prevent the well/boring from providing an avenue to contamination during construction? ' Drilling equipment will be cleaned prior to its use on site and between each of the 1 borings. 1 ' 4. What field procedures will be utilized to determine if contamination exists? Field personnel will use visual observations and an organic vapor..analyzer, as appropriate, as preliminary screening tools A laboratory will be use to analyze samples collected 5. What procedures will be used to determine whether samples will be sent for laboratory testing or archiving? Visual observations of the soil, screening with organic vapor analyzers, as appropriate, depth from which samples were collected (i.e., capillary zone, lithologic changes) will be used to determine testing and archiving. County of San Diego DERSAM-9060 (Rev. 10/98) Page 4 of 5 Department of EnvironmenW Health 6. What constituents will be monitored and tested (Include EPA Laboratory Test Methods to be used)? 1 Soil and groundwater samples will be analyzed for TPH or TRPH, BTEX and MTBE, using_ the DHS-TPH Method and EPA Methods-418.1, 8020, and 8260. The SAM Manual will be consulted for additional analyses. 7. How will samples be transported and preserved? Samples will be placed into laboratory prepared containers and transferred to the on site mobile laboratory for analysis. Chain-of- custody procedures will be followed throughout the sampling process. 8. What sampling methods will be used? A hollow-stem auger drill rig will be used to advance each boring and a split spoon sampler will be used to collect soil samples. Groundwater samples will be collected using disposable bailers. 9-.--Are you proposing a variation from the methods and/or procedures presented in the requirements for the construction of Vadose and Ground Water Monitoring Wells (Current SAM Manual Requirements). If yes, specify these variations. No- 10. What procedures will be used to ensure no contamination will be introduced by the drilling equipment? Augers will be steam cleaned by the driller and transported to the site, with 1 the augers steam cleaned prior to the advancement of each boring. i 1 11. What methods will be used to clean sampling equipment? _ Sampling equipment will be washed in a trisodium phosphate or alconox solution and rinsed with tap water. 12. What cleaning method will be used to clean casing and screen prior to installation? Casing and screen,if necessary, will be purchased from a supplier who will provide 1 steam cleaned and wrapped materials prior to their delivery to the site. 1 1 County of San Diego 1DERSAM-9060 (Rev. 10/98) Page 5 of 5 Department of Environmental Health I'D 1 . 1; MIN' 1 ciao 76 1~ 1 1 oar 1 ow 1 1 i - w, 1 Q o 1 1 W 0 o 1 ~w 1 Z 1 - ~ a 1 1 1 / y low a~ M° W L I ~ I ~ ~ V ~ z z z W t= 0 O O V Z Q U H U Y U Z Q ' W Z ~ O Z ~ OJ < U OJ CL. U J Q ' < Z Q O v J O z W m Z Fes- ' m U pe Q OZO. O t~ O__ ZQ_ U.j _ V < ~ to r LL'~ m u z 0-m- 0-m- CLm~ O~< LLJ D O o 0 o u u Z Z r ° ® p U U - - ' rl - - - - Q W W m %D I V ~ m it ' N IoOd I ' l _Z) Z a 0m O co r u © a O d 3E z~ ~ 1 ceeg~ ce m - - - _ a V U J Q¢ a0 Zcn 1 ° CL > U Ln V) ~o 1 Q o Z cv~ ce o 1 CL W L , V z r u_ G r a 1 t7i oe r v ° ZN a u o r N W r r 0 co O m m M co 1 0 ® 12 O Z r J O J N ~N < Lei r W N O ~ g~ co z L 0 O ® W N M r APPENDIXD s r r 1 1 BORING / TRENCH NO. HC-B1 WELL NO. "NO WELL" I Date Drilled: 3/13/00 Well Screen: Equipment: CME-85 Well Cover. Driller: West Hazmat Diameter & Type of Casing: I Water Level: - 7.0' bgs on 3/13/00 Ground Surface Elevation: Sample Soil Well Information Information Information Sample No. Sample TPH Blow Count Depth Soil a Well Time Type mg/Kg Feet / to Feet Description Construction I ' Medium dense, moist, r dark yellowish brown 1 (10 YR 4/4) ' fine to medium SAND, some clay I 2 (SP) _ 3 - Run 3.0-4.5 I B1-1 Sample 4 1 1120 4.0-4.5 NA 35 Run 5 4.5-6.0@,. ' B]-2 Sample 5,2Wgl - - - - - - I 1122 5.5-6.0 1,8O02 20 ' a odium dense, wet, black (7.5 YR N/2) I = Runes fine to medium 6.0-7.5 SAND ' (SP) Water Measured BI-3 Sample 7 @7.0'@1615HRS <10 1' 1124 7.0-7.5 Run 7.5-9.0 8 Medium dense, wet, dark brown 10 YR 3/3) Groundwater Sample ' Sample fine to medium SAND @ 1431 HR 3/13 d /00 11127 27 8.5-9.0 <10 22 9 (SP) - Run / Groundwater _le: 9.0-10.5 Medium dense, wet, I -10 dark yellowish brown TPHg TPHd 9,<soo500' u BI-5 Sample <10 18 (10 YR 4/6) 66 u 82 1 1138 10.0-10.5 fine to medium SAND MTBE g/ (SP) Benzene 15 ug/L 11 Toluene <5.0 ug/L ' BOH @ 10.5' Ethylbenzene 150 ug/L Xylenes 330 ug/L 12 ' Borehole backfilled with 13 bentonite grout ' 'Gasoline range not identified as gasoline 'Diesel range not identified as diesel ' Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 ' Eng. / Geo.: Eminhizer/Reeve Page: 1 of 1 BORING / TRENCH NO. HC-B 1 A WELL NO. "NO WELL" Date Drilled: 3/13/00 & 4/5/00 Well Screen: Equipment: CUE-85 Well Cover. Driller: West Hazmat Diameter & Type of Casing: Water Level: - 9.92' BTOC on 4/5/00 Ground Surface Elevation: Sample Soil Well Information Information Information Sample No. Sample TPH Blow Count Depth Soil Well / Type Description Construction Time mg/Kg Feet Feet Medium dense, moist, dark yellowish brown (10 YR 4/4) 1 fine to medium SAND, some clay (SP) 2 3 Run - 3.0-4.5 4 B1A-1 - Sample 1306 4.0-4.5 NA 16 - V - Run - 4.5-6.0 5 "'2 B1A-2 Sample <10 10 ` 1308 5.5-6.0 lob - Run 6.0-7.5' Medium dense, wet, B1A-3 Z Sample NA 19' 7 blaf e10 YR 1) 1311 7.0-7.5 SAND (SP) Run g - 7.5-9.0 - - - - - - - - - - Medium dense, wet; Water Measured B 1 A-4 Sample NA 20 dark brown (7.5 YR 3/2) @ 9.92 BTOC on 4/5/00 N 1313 8.5-9.0 9 clayey fine to medium Run SAND 9.0-10.5 (SC) Sample Collected 00 B1A-5 Sample 10 ~ - - - - - - - 1247IiRS on 4/5100 1315 10.0-10.5 <10 19 Medium dense, wet, Groundwater Sample: dark yellowish brown HC-B1A-Water Run (7.5 YR 3/2) TPHg <500 ug/L 10.5-12.0 11 fine to medium SAND TPHd <500 ug/L (SP) MTBE <20 ug/L B1A-6 Sample <10 19 Benzene <0.5 ug/L 0917 11.5-12.0 12 Medium dense, wet, Toluene <0.5 ug/L very dark brown Ethylbenzene <0.5 ug/L Run (10 YR 2/2) Xylenes <1.5 ug/L 12.0-13.5 fine to medium SAND _ (SP) Sample 13 Boring Terminated B1A-7 13.0-13.5 NA 27 @ 10.5' on 3/13/00 Efl I Boring Continued to 15' on 4/5/00 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 l Eng. / Geo.: Eminhizer/Reeve Page: 1 of 2 BORING/ TRENCH NO. HC-B IA (continued) WELL NO. "NO WELL" Date Drilled- 3/13/00 & 4/5/00 Well Screen: Equipment: CUE-85 Well Cover. r Driller: West Hazmat Diameter & Type of Casing: r Water Level: 9.92' BTOC on 4/5/00 Ground Surface Elevation: Sample Soil Well r Information Information Information Sample No. Sample TPH Blow Count Depth Soil Well Tare Type mg/Rg Feet Fe t Description Construction r Run Medium dense, wet, = 13.5-15.0 14 dark yellowish brown r (10 YR 4/4) clayey B1A-8 Sample fine to medium Borehole backfilled with r 0929 14.5-15.0 NA 25 15 SAND bentonite grout (SC) r BOH @ 15.0' r 16 r r 17 r r 18 0i: tr 19 r r 0 r r 21 r r 22 r r 23 r 24 r r 25 r r 26 r r Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 r Project No.: EOC-98-065 Date: October 31, 2000 r Eng. / Geo.: Eminhizer/Reeve Page: 2 of 2 r BORING / TRENCH NO. HC-B2 WELL NO. "NO WELL" Date Drilled: 3/13/00 Well Screen: Equipment: CME-85 Well Cover. Driller: West Hazmat Diameter & Type of Casing: Water Level: - 6.9' bgs on 3/13/00 Ground Surface Elevation: Sample Soil Well Information Information Information Sample No. Sample TPH Blow Count Depth Soil Well Time Type mfg Feet Feet Description Construction 3" Asphaltic Concrete Medium dense, moist, yellowish brown 1 (10 YR 5/6) fine SAND, some clay Sample Collected @ (SP) 1303 HRS on 3/13/00 2 Groundwater Sample: HC-B2-Water TPHg <500 ug/L TPHd <500 ug/L 3 MTM <20 ug/L Benzene <0.5 ug/L Toluene <0.5 ug/L, 4 Lthylbenzene <0.5 ug/L - - - - - Xylenes <1.5 ug/L 5 Medi A le w Run 0 /6) SAND 5.0-6.5 ~p (SP) B2-1 Sample <10 15 .aP;!6 0915 6.0.6.5 Run Water Measured 6.5-8.0 Medium dense, moist, @ 6.9" BGS @ 1300 HRS B2-2 Sample <10 ly very d~ brown on 3/13/00 - 0918 7.o-7.s fine SAND, some 8 clay (SP) Run B2-3 Sample 9 0921 9.0-9.5 NA 25 Medium dense, wet, olive brown Borehole backfilled with 10 (2.5 Y 4/4) fine to bentonite grout medium SAND, trace clay (SP) 11 _ 12 - - - - - - - - - Run Medium dense, wet 12.0-13.3 dark olive (5 Y 3/2) fine to B2-4 Sample 13 medium SAND 0931 13.0-13.5 NA 18 (SP) 10 [ BOH ® 13.0' Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 1 of 1 BORING / TRENCH NO. HC-B3 WELL NO. "NO WELL" Date Drilled: 3/13/00 Well Screen: Equipment: CUE-85 Well Cover. Driller: West Hazmat Diameter & Type of Casing: ' Water Level: - 6.3' bgs on 3/13/00 Ground Surface Elevation: Sample Soil Well Information Information 3 Information Sample No. Sample TPH Blow Couch Depth Soila Well ' Time Type mg/Kg Feet Feet Description Construction p' 3" Asphaltic Concrete I Medium dense, moist, ' yellowish brown 1 (10 YR 5/6) ' fine SAND, some clay (SP) 2 i~ 3 ' 4 Medium dense, m _st, 1 dark yello 01 5 t = Run_ 5.0-6.5 B3-1 Sample <10 20 Groundwater Measured 1 1001 6.0-6.5 ® 6.3" BGS @ 1300 HRS Run ez on 3/13/00 1 - 6.5-8.0 B3-2 Sample 7 _ _ _ _ _ _ _ _ _ Groundwater Sample Collected 1 1009 7.0-7.5 <10 Medium dense, moist Q 1255 HRS on 3/13/00 to wet, very dark 1 = brown (10 YR 2/2) Groundwater ter Sample: g fine SAND, some HC-B3-Water 1 Run clay TPHg <500 ug/L 8.0-9.5 (SP) TPHd <500 ug/L MTBE <20 ug/L B3-3 Sample 9 Benzene <0.5 ug/L 1 1007 9.0-9.5 NA 20 Toluene <0.5 ug/L Ethylben=e <0.5 ug/L 1 10 - - - - - - - - - Xylenes <1.5 ug/L 1 Medium dense, wet, olive brown 1 11 (2.5 Y 4/4) fine to medium SAND, trace 1 clay ' (SP) 12 - - - - - - - - - Run Medium dense, wet = 12.0-13.5 dark olive 13 (5 Y 3/2) fine to B3-4 Sample NA 20 medium SAND Borehole backfilled with 1 1011 13.0-13.5 (SP) bentonite grout 1 BOH Q 15.0' 1 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 1 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 1 of 1 1 BORING / TRENCH NO. HC-B4 WELL NO. "NO WELL" Date Drilled: 3/13/00 Well Screen: Equipment: CUE-85 Well Cover. Driller. West Hazmat Diameter & Type of Casing: Water Level: - 7.7' bgs on 3/13/00 Ground Surface Elevation: Sample Soil Well Information Information Information Sample No. Sample TPH Blow Count Depth Soil Well Time Type mg/Kg Feet Feet Description Construction 3" Asphaltic Concrete Medium dense, moist, yellowish brown 1 (10 YR 5/6) fine SAND, some clay (SP) 2 3 4 It Medium dense, in dark yello ' = '(1 5 e Run 5.0-6.5 B4-1 Sample <10 15 t 1040 6.0-6.5 - - - - - - - - Run 6.5-8.0 - A; 10 Medium dense, wet, - B4-2 Sample 7 black (5 Y 2.5/2) 1042 7.0-7.5 <10 fine to medium Groundwater Measured SAND @ 7.7 BGS @ 1614 HRS r 8 (SP) _ - on 3/13/00 ' Run 8.0-9.5 Groundwater Sample Collected 9 - - - - - - _ _ _ @ 1355 HRS on 3/13100 ' B4 Sample Medium dense, black, wet Groundwater loa5 n 9.0-9.5 NA 19 (10 YR 2/1) fine to ium HG1144-ater ' SAND, trace clay TPHg <500 ug/L -10 (SP) TPHd <500 ug/L ' - - - - MTBE <20 ug/L Soft, wet, black Benzene <0.5 ug/L 11 (10 YR 2/1) fine sandy Toluene <0.5 ug/L SILT Ethylbenzene <0.5 ug/L (MH) Xylenes <1.5 ug/L 12 - - - - - - - - = - Run Medium dense, wet, = 12.0-13.5 dark yellowish brown ' (10 YR 3/4) fine to B4-4 Sample NA 22 13 medium SAND Borehole backfilled with t 1049 13.0-13.5 (SP) bentonite grout ' BOH @ 15.0' 1 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 1 of 1 BORING / TRENCH NO. HC-B5 WELL NO. "NO WELL" Date Drilled: 3/13/00 Well Screen: Equipment: CME-85 Well Cover. Driller: West Hazmat Diameter & Type of Casing: Water Level: - 7.9' bgs on 3/13/00 Ground Surface Elevation: Sample Soil Well Information Information Information Sample No. Sample TPH Blow Count. Depth Soil Well . in lime Type mgtKg Feet Feet Description Construction I Medium dense, moist, yellowish brown (10 YR 5/g) 1 fine to medium i SAND (SIP) 2 i Groundwater Sample Collected _ 3 @ 1407 HRS on 3/13/00 ' Run Groundwater Sample: 3.0.4.5 HC-B5-Water B5-1 Sample 4 TPHg <500 ug/L 1336 4.0-4.5 NA 28 TPHd <500 ug/L MTBE <0 ug/L Run Benzene <0.5 ug/L 4.5-6.0 5 Toluene <0.5 ug/L = e, moist Ethylbenzene <0.5 ug/L Sam le Xylenes <1.5 ug/L ' B5-2 39 p <10 17 t' A +(10 YR 30 6) 5.5-6.0 fine to medium SAND, Run trace clay 6.0.7.5 00*1. A, (SP) B5-3 Sample 7 ' 1341 7.0-7.5 NA 1 Water Measured ' Run Soft to Firm, wet, _ ® 7.9- on 3/13/00 ' 7.5-9.0 8 dark brown (7.5 YR 3/2) fine sandy CLAY Sample 9 - - - (CL) - - - - 13" 344 9.5-9.0 NA 22 = Run Medium dense, wet, 9.0.10.5 dark yellowish brown r = (10 YR 3/4) B3-5 Sample 10 fine SAND 1347 1 mpl.5 NA 20 (SP) Borehole backfilled with bentonite grout BOH ® 10.5- 11 ' 12 13 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 1 of 2 1 BORING / TRENCH NO. HC-B6 WELL NO. "NO WELL" Date Drilled: 3/13/00 Well Screen: Equipment: CME-85 Well Cover. Driller: West Hazmat Diameter & Type of Casing: Water Level: - 7.8' bgs on 3/13/00 Ground Surface Elevation: Sample Soil Well Information Information Information Sample No. Sample TPH Blow Count Depth a Soil Well Time Type mg/Kg Feet Feet Description Construction Medium dense, moist, dark yellowish brown ' (10 YR 4/6) fine to 1 medium SAND 1 (SP) 1 2 i 1 3 Groundwater Sample Collected Run 3.0-4.5 Q 1100 HRS on 3/14/00 r Groundwater Sample: 4 ' 86-1 Sample NA 24 4.0-4.5 HC-B6-Water 1404 d~ TPHg <500 ug/L ' TPHd <500 ug/L Run MTBE <20 ug/L ' 4.5-6.0 5 ~8 Benzene <0.5 ug/L Toluene <0.5 ug/L .4 IL ' B6-21 Sample Ethylbenzene <0.5 ug/L 1405 5.5-6.0 <10 22 6 xylenea <1.5 ug/L Run ~.0-7.5 - 6un B6-3 Sample <10 ~FZS ~k 1407 6.5-7.0 ' Medium dense, wet, - - dark yellowish brown Groundwater Measured - Run (10 YR 3/6) @ 7.8' BGS ® 1645 HRS 7.5-9.0 8 fine to medium on 3/13/00 - SAND B6-4 Sample NA 16 (SP) 1410 8.5-9.0 9 - Run ' 9.0-10.5 B6-5 Sample 10 1412 10.0-10.5 NA 15 BOH @ 10.5- 11 1 12 ' Borehole backfilled with bentonite grout. 13 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 i Eng. / Geo.: Eminhizer/Reeve Page: 1 of 1 1 BORING/ TRENCH NO. HC-B7 WELL NO. "NO WELL" Date Drilled: 3/13/00 & 4/5/00 Well Screen: Equipment: CME-85 Well Cover. Driller West Hazmat Diameter & Type of Casing: Water Level: 11.04' 13TOC on 4/5/00 Ground Surface Elevation: Sample Soil Well Information Information Information Sample No. Sample TPH Blow Count Depth Soil rime Type m"g Feet Feet Description Constrwon uction Dense, moist, dark yellowish brown (10 YR 4/6) 1 fine to medium SAND (SP) 2 _ 3 Run 3.0.4.5 B7-1 Sample <10 g 30 4 1437 4.0.4.5 670 d Run V 4.5-6.0 5 4x! B7-2 Sample <10 27 1440 5.5-6.0 - - - - - - - - - Run Medium dense, moist, Groundwater Sample Collected dark yellowish brown 6.0-7.5 (10 YR 3/6) fine to 1247 HRS on 4/5/00 1 medium SAND Groundwater Sample: B7-3 Sample <10 18 7 (SP) HC-7-Water 1442 7.0.7.5 TPHg <500 ug/L ' Run TPHd <500 ug/L 7.5-9.0 8 MTBE <20 ug/L t Benzene <0.5 ug/L B7-4 Sam le Toluene <0.5 ug/L 1444 8.5-9 0 NA 17 Ethylbenzene <0.5 ug/L ' 9 Xylenes <1.5 ug/L ' Run 9.0.10.5 = Boring Terminated B7-5 Sample <10 25 10 Boring 10. ' on 3/1 00 ' 1446 10.0.10.5 - - - - - - - - - to 15' on 4/5/00 ' Run Medium dense, wet, 10.5-12.0 11 dark yellowish brown ' (10 YR 4/4) = Groundwater Measured B7-6 Sample <10 26 fine to medium SAND @ 11.04' BTaC ®1645 HRS ' 0840 11.5-12.0 12 (SP) on 4/5/00 ` Run - - -_12.0-13.5 7- Medium dense, wet, B7-7 Sample 13 yellowish brown (10 YR 518) 0845 13.0-13.5 NA 27 fine coarse SAND, - (SP) Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 1 of 2 I 1 BORING / TRENCH NO. HC-B7 (continued) WELL NO. "NO WELL,, Date Drilled: 3/13/00 & 4/5/00 Well Screten: Equipment: CME-85 Well Cover. Driller. West Hazmat Diameter & Type of Casing: Water Level: - 11.04' BTOC on 4/5/00 Ground Surface Elevation: x Sample Soil Well Information Information Information r Sample No. Sample TPH Blow Count Depth Soil Well /K in Time Type m8g Feet Feet Description Construction Medium dense, wet, Run yellowish brown (10 YR 5/8) - 13.5-15.0 14 fine to course SAND, scattered gravels B7-8 Sample (SP) 0850 14.5-15.0 NA 25 Borehole backfilled with 1 15 bentonite grout BOH @ 15.0' r1 16 17 18 _ - 2U 21 22 23 24 25 26 1 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 2 of 2 BORING/ TRENCH NO. HC-B8 WELL NO. "NO WELL" Date Drilled: 3/13/00 & 4/5/00 Well Screen: Equipment: CUE-85 Well Cover. Driller: West Hazmat Diameter & Type of Casing: M, Water Level: - 10.96' BTOC on 4/5/00 Ground Surface Elevation: Sample Soil Well Information Information Information Sample No. Sample TPH Blow Count Depth ,e Soil Well / Pe mg/Kg / in Description Construction Time Feet FeeMedium dense, moist, dark yellowish brown (10 YR 4/6) 1 fine to medium SAND (SP) 2 - 3 Run - 3.0.4.5 B8-1 Sample NA 40 4 1458 4.0-4.5 Run 4.5-6.0 5 i B8-2 Sample 1501 5.5-6.0 NA 20 41 A = Run .11, V ~ -7 1 - - - - - Medium dense, moist, - - 6.0.7.5 Groundwater Sample Collected dark yellowish brown 7 ( ® 1255 HRS on 415/00 B8-3 Sample <10 g 10 YR 3/ fine to 5 200 d medium SAND Groundwater Sample: 1502 inh 7.0.7.5 Act (SP) HC-8-Water 1 Run TPHg <500 ug/L 7.5-9.0 8 TPHd <500 ug/L - MTBE <20 ug/L B84 Sample Benzene <0.5 ug/L ' 1506 8.5-9.0 <10 25 9 Toluene <0.5 ug/L Ethylbenzene <0.5 ug/L 1 Run Xylenes <1.5 ug/L 9.0.10.5 1 B8-5 'IV Sample <]0 ] 8 -10 Boring Terminated 1 1510 10.0-10.5 - - - - - _ - - - @ 10.5' on 3/13/00 Boring Continued Run Medium dense, wet, to 15' on 4/5/00 1 10.5-12.0 1 1 dark olive gray - (5 Y 3/2) ' B8-6 Sample fine to medium SAND 1 0950 11.5-12.0 <10 18 12 (SP) u Oater BM1 Measured 1 Run on 4/5/00 12.0-13.5 1 B8-7 Sample 13 - Medium dense, we - - 1 0955 13.0-13.5 NA 27 t, olive brown (2.5 Y 4/4) fine to medium SAND 1 (SP) 1 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 1 Project No.. EOC-98-065 Date: October 31, 2000 t Eng. / Geo.: Eminhizer/Reeve Page: 1 of 2 BORING / TRENCH NO. HC-B8 (continued) WELL NO. "NO WELL" j Date Drilled: 3/13/00 & 4/5/00 Well Screen: Equipment: CUE-85 Well Cover. Q Driller: West Hazmat Diameter & Type of Casing: Water Level: - 10.96' BTOC on 4/5/00 Ground Surface Elevation: Sample Soil Well ! Information Information Information } Sample No. Sample TPH Blow Covert Depth soil well Time Type mg/Kg Feet Feet Description Construction Medium dense, wet, olive brown (2.5 Y 4/4) fine to medium SAND Run 13.5-15.0 14 (SP) Becomes clayey fine to B8_8 Sample medium SAND 0958 14.3-13.0 NA 38 (SC) Borehole backtilled with 15 bentonite grout ® BOH @ 15.0' 16 17 18 ~ A.." 0 21 22 23 24 25 26 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 2 of 2 BORING / TRENCH NO. HC-B8A WELL NO. "NO WELL" ~j Date Drilled: 3/13/00 & 4/5/00 Well Screen: Equipment: CME-85 Well Cover. Driller. West Hazmat Diameter & Type of Casing: Water Level: 10.05' BTOC on 4/5/00 Ground Surface Elevation: Sample Soil w Well j Information Information Information Sample No. Sample TPH Blow Count Depth Soil 2 ~ Well J / Type mg/Kg / in Description Construction Tune Feet Feet Medium dense, moist, dark yellowish brown (10 YR M6) 1 fine to medium SAND (SP) 2 3 Run 3.0-4.5 lie B8A-1 Sample 4 1610 4.0-4.5 NA 30 Run 4.5-6.0 5 B8A-2 ' Sample 1615 5.5-6.0 <10 27 6 = Run mss: = 6.0-7.5 o-? i B8A-3 Sample - - - - - - - - - 1616 7.0-7.5 <10 18 Medium dense, moist, dark yellowish brown Run (10 YR 4/3) fine to Groundwater Sample Collected 7.5-9.0 8 medium SAND a 1005 HRS on 4/15/00 - - - (SP) - - - - Groundwater le: H8A Water B8A4 Sample 1621 8.5-9.0 NA 18 Medium dense, wet, 9 very dark gray TPHg <500 ug/L Run (10 YR 3/1) TPHd <500 fLL 9.0-10.5 fine to medium SAND MTBE <20 ug/L (SP) Benzene <0.5 ug/L B8A-5 Sample 10 - - - - - - - _ Toluene <0.5 ug/L 1623 10.0-10.5 <10 24 Medium dense, moist _ Ethylbenzene <0.5 ug/L _ to wet, olive (5 Y 2.5/2) Xylenes <1.5 ug/L Run fine to medium SAND = 10.5-12.0 1 1 (SP) Boring Terminated B8A-6 Z Sample <10 17 @ 10.5' on 3/13/00 0755 11.5-12.0 12 Boring continued to 15' on 4/5/00 Run - - - - 12.0-13.5 Dense, wet, dark yellowish brown (10 YR 3/4) BgA-7 Sample NA 45 13 fine to medium SAND Groundwater Measured l 0860 13.0-13.5 (SP) @ 10.05' BTOC on 4/5/00 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 1 of 2 1 r BORING / TRENCH NO. HC-B8A (continued) WELL NO. "NO WELL" Date Drilled: 3/13/00 & 4/5/00 Well Screen: ' Equipment: CME-85 Well Cover. r Driller: West Hazmat Diameter & Type of Casing: ' Water Level - 10.05' BTOC on 4/5/00 Ground Surface Elevation: Sample Soil Well Information Information Information Sample No. Sample TPH Blow Count Depth Soil ~a Well Type mg/]{g in Description ~ Construction Time Feet Feet Dense, wet, dark yellowish brown (10 YR 3/4) Run fine to medium SAND 13.5-15.0 14 (SP) B8A- Sample 0805 14.5-15.0 NA 20 15 Borehole backfilled with BOH @ 15.0' bentonite grout . 16 17 -18 0 . 21 22 23 24 25 26 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 2 of 2 BORING / TRENCH NO. HC-B9 WELL NO. "NO WELL" Date Drilled: 3/13/00 & 4/5/00 Well Screen: Equipment: CME-85 Well Cover. Driller: West Hazmat Diameter & Type of Casing: Water Level: -11.25' BTOC on 4/5/00 Ground Surface Elevation: Sample Soil Well Information Information Information Sample No. Sample TPH Blow Count Depth Soil Well Time Tye mg/Kg Feet Feet`a"1O° Construction Dense, moist, dark yellowish brown (10 YR 4/6) 1 fine to medium SAND (SP) 2 3 . Run - 3.0.4.5 B9-1 Sample 4 1531 4.0.4.5 NA 40 • Run' 4.5-6.0 5 A B9-2 Sample . 1534 5NA 18 Ale Runs 6.0.7.5 4;. B9-3 Sample 7 i~)l Medium dense, moist, 1536 7.0.7.5 NA 2 dark yellowish brown Groundwater Sample Collected Run g (10 YR 4/3) fine to ® 1305 HRS on 415/00 7.5-9.0 medium SAND (SP) Groundwater Sample: B9-4 Sample HC-9-Water 1538 8.5-9.0 <10 17 9 TPHg <500 ug/L lop TPHd <500 ug/L Run - - - - - - - - - TRPH 600 ug/L 9.0.10.5 Medium dense, wet, MTBE <20 ug/L very dark gray Benzene <0.5 ug/L B9-5 Sample <10 g&d 1 (10 YR 3/1) Toluene <0.5 ug/L 1541 - 10.0-10.5 65 TRPH 20 fine to medium SAND Ethylbenzene <0.5 ug/L Run (SP) Xylenes <1.5 ug/L 10.5-12.0 11 Medium dense, wet, Boring Terminated = dark brown (10 YR 3)3) _ @ 10.5' on 3/13/00 B9-6 Sample <10 17 fine to medium SAND, Boring Continued 1025 11.5-12.0 some silt to 15' on 415/00 12 Run (SP) . 12.0-13.5 Groundwater Measured B9-7 Sample 13 - - - - - - - - - @ 11.25' BTOC 1027 13.0-13.5 NA 27 Medium dense, wet, dark on 415/00 yellowish brown (10 YR 4/6) fine to medium SAND (SP) Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 1 of 2 r BORING / TRENCH NO. HC-B9 (continued) WELL NO. "NO WELL" r Date Drilled: 3/13/00 & 4/5/00 Well Screen: Equipment: CUE-85 Well Cover. r Driller: West Hazmat Diameter & Type of Casing: ' Water Level: - 11.25' BTOC on 4/5/00 Ground Surface Elevation: Sample Soil Well 1 Information Information Information ' Sample No. Sample TPH Blow Count Depth Soil Well Tune Type mBB Feet Feet Description Construction 1 r Medium dense, wet, dark r Run yellowish brown (10 YR 4/6) fine to medium SAND = 13.5-15.0 14 (SP) r B9-8 Sample Medium dense to dense, wet, r 1032 14.5-15.0 NA 33 15 olive brown (2.5 Y 4/4) fine to medium SAND Borehole backflled with r (SP) bentonite grout r 16 BOH @ 15.0' r r 17 r 18 r x, r • A. No 1 21 22 1 23 1 24 1 25 1 26 1 Project: Don Hubbard Contracting Co. Facility Permit No.: W98749 Project No.: EOC-98-065 Date: October 31, 2000 Eng. / Geo.: Eminhizer/Reeve Page: 2 of 2 1 I 1 APPENDIXE r r s O ns LABORATORIeS INC. 4/3/00 Envir(knega Consultants 16732 Palmero Drive San Diego, CA 92128 Project Name: Hubbard Contracting Project No.: BOC-98-065 Attention: Mr. David Eminhizer r Mobile One Laboratories received and analyzed the following sample(s): Date Received Quantity Matrix Date Received Quantity Matrix 3/13/00 23 soil 3/13/00 5 water 3/14/00 1 water The samples were analyzed by one or more of the EPA methodologies or equivalent methods as specified below. TPH CA DHS "Total Petroleum Hydrocarbons" BTEX EPA Method 8020 TRPH EPA Method 418.1, modified for soils VOCs EPA Method 8260 The results are included with a summary of the quality control procedures. Please note that the symbol "nd" indicates a value below the reporting limit for the particular compound in the sample. Flags qualifying the data are explained in footnotes on the same report page as they occur. Please feel free to call us to discuss any part of this report or to schedule future projects. Sincerely, R ecca L. Johnson J es E. Picker, Ph.D President Lab Director Mobile one Laboratories is certified by the California Department of Health Services (certificate Ass: 1194,1561,1921,2088,2278), and the Arizona Department of Health Services (certificate M: AZM466). MOL Project # E0031300 1 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029 • PHONE (760) 735-3208 9 FAX (760) 735-2469 J M(aBlt n LABORATORIE5 IN C. . Report Summary Client: EnvirOmega Consultants Matrix: soil Project: Hubbard Contracting Units - mg/kg Method= TPH TPH TRPH <------------8020--------------> Analyte = Gasoline Diesel MTBE Benzene Toluene Ethyl- Xylenes Cs-C12 C1a-Cu benzene Detection Limit - 10 10 10 0.1 0.05 0.05 0.05 0.15 SAMPLE I.D. Date Analyzed: 3/13/00.3/20/00.3/23/00.3/29/00 i HC-612 5,2008 1,800# <0.25* <0.5* 1.5 25 59 nd## HC-1312 nd nd HC-1314 nd nd HC431-5 nd nd HC-B1A-2 nd nd HC-62-1 nd nd HC4322 nd nd HC-1334 nd nd HC-632 nd nd HC-B4-1 nd nd h HC-134-2 nd nd HC-B52 nd nd HC-66-2 nd nd HC436-3 nd nd HC-1374 nd 670 HC-137-2 nd nd HC-872 nd nd HC-682 nd 5,200 HC-1384 nd nd HC-89-4 nd nd 65 HC-139-6 nd nd nd Date Analyzed: 3/14/00 HC-B8A-2 nd nd HC-38A2 nd nd Footnotes: nd = Not found above the detection limit. 8 = Gasoline range organics not identified as gasoline. # = Diesel range organics not identified as diesel. * = Sample dilution was required. Detection limits were adjusted accordingly. E = Analyte amount exceeds calibration range. Amount quantitated by extrapolation. = This compound has been screened by EPA method 8020. Any positive results should be confirmed by a second analysis. = A second analysis has been performed on this sample by Mass Spectrometry. The results are as indicated. Analyses performed by: Bret Hutchinson, Tamara Davis E0031300 Page 2 of 11 SO. D STREET 9 ESCONDIDO, CA 92029 9 PHONE (760) 735-3208 9 FAX (760) 735-2469 r> U r M one LABORATORIES INC. Report Summary Client: EnvirOmega Consultants Matrix: water - Project: Hubbard Contracting Units ug/L - Method= TPH TPH TRPH <------------8020--------------> Analyte = Gasoline Diesel MTBE Benzene Toluene Ethyl- Xylenes Ca-C12 C13-C24 benzene Detection Limit - 500 500 500 20 0.5 0.5 0.5 1.5 SAMPLE I.D. _ Date Analyzed: 3/13/00.3/20/00.3/21/00 j HC-BI-water 9,5008 nd 67" 15 <5.0" 150 330 66M HC-1132water nd nd nd nd nd nd nd HC-B3-water nd nd nd nd nd nd nd HC-B4water nd nd nd nd nd nd nd r? Date Analyzed: 3/14/00.3/20/00 HC-B5-water nd nd nd nd nd nd nd Date Analyzed: 3/20/00 HC-186water nd nd nd nd nd nd nd r~ r r r r r r r r Footnotes: nd - Not found above the detection limit. & = Gasoline range organics not identified as gasoline. # = Diesel range organics not identified as diesel • = Sample dilution was required. Detection limits were adjusted accordingly. E = Analyte amount exceeds calibration range. Amount quantitated by extrapolation. This compound has been screened by EPA method 8020. Any positive results should be confirmed by a second analysis. f = A second analysis has been performed on this sample by Mass Spectrometry. The results are as indicated. Analyses performed by: Bret Hutchinson E0031300 Page 3 of 11 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029 9 PHONE (760) 735-3208 • FAX (760) 735-2469 ► M(@Blts n ► LABORATORIES INQ a E ~ o ~ ew a ao CL LU W M S E O 'C 'C O O 'C 'C 'C 'C 'C 'G 'C 'C O m N to N C c C't 00 c c c c c c c c c C c 00 O qs V ~ N ~ ~ H ch N c~ N Ln 3: cp pSpS O 0 0 0 8 80 0 8 0 0 S S SS tD O~ U C 00le14le It~q* ItRtq*VVd'.4 et MwQ go I Q7E o mm ~c ~eS~a 'v W= c m aci N~~ E m ~ c c m~r~' c c Ea o aci m m r 0 B mAcc a~ a o E o Eon m>.m c c c k W-0 m m~ t m yr ^,mA ao = Q c m Z H N C s a G C C C= y •N •y' C co W W c N N N N N c C N 7 O «~v a~~m._ sccocto~cUcccm~c 1%~c O ca m~ ac~ c~ m.. 3 QQu,aa~amimmm tom ~,Fa )a (aQ¢wo cc 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029 PHONE (760) 735-3208 • FAX (760) 735-2469 M (BBIt nG LABORATORIES INC. QC Summary r Client: EnvirOmega Consultants Project: Hubbard Contracting Matrix: soil Method TPH TPH TRPH MTBE Benzene Toluene Ethyl- Xylenes gasoline diesel benzene ® APR - % QC Limits (67-125) 67-125) (75-126) (60-125 (60-125 (59-125 (52-125) (60-12 RPD - % QC Limits <30 <30 <30 <30 <30 <30 <30 <30 Date Analyzed: /1 / 0 Spike Level (mg/kg) 151 251 MS Amount Found 148 227 MSD Amount Found 145 253 APR - % 97.0 95.6 AND % 2.0 10.8 Date Analyzed: 3/14/00 Spike Level (mg/kg) 151 251 MS Amount Found 163 251 MSD Amount Found 162 272 - a APR - 107.6 104.2 RPD - % 0.6 8.0 ' Date Analyzed: 3/20/00 Spike Level (mg/kg) 1.00 0.1 0.1 0.1 0.3 MS Amount Found 1.07 0.106 0.104 0.103 0.312 ' MSD Amount Found 0.962 0.100 0.100 0.098 0.305 APR - % 101.6 103.0 102.0 100.5 102.8 RPD - % 10.6 5.8 3.9 5.0 2.3 Date Analyzed: 3/29/00 f' Spike Level (mg/kg) 81 LCS Amount Found 83 LCSD Amount Found 85 APR - % 103.7 RPD-% 2.4 t Calibration verification was within acceptable limits. E0031300 Page 5 of 11 ' 148 SO. VINEWOOD STREET 9 ESCONDIDO. CA 92029 9 PHONE (760) 735-3208 FAX (760) 735-2469 ' ng LABORATORIES INC. OC Summary Client: EnvirOmega Consultants Project: Hubbard Contracting Matrix: water Method TPH TPH TRPH MTBE Benzene Toluene Ethyl- Xylenes ' gasoline diesel benzene APR - % QC Limits (75-125) (75-125 (60-125) (60-125 (69-125 63-125) (60-125) 57-12 RPD - % QC Limits <30 <30 <30 <30 <30 <30 <30 <30 I► ' Date Analyzed: 3/13/_0_Q Spike Level (ug/L) 7,600 LCS Amount Found 7,620 ' LCSD Amount Found 8,030 APR - % 103.0 ' RPD-% 5.2 r Date Analyzed: 3/ 3 Spike Level (ug/L) 100 10 10 10 30 i MS Amount Found 104 10.2 9.90 9.60 28.7 r MSD Amount Found 124 10.7 10.3 9.85 29.4 114.0 104.5 101.0 97.3 96.8 r -0~ 17.5 4.8 4.0 2.6 2.4 RPD- °k r r Date Analyzed: 3/20/00 Spike Level (ug/L) 7,600 r LCS Amount Found 7,320 ' LCSD Amount Found 7,870 APR - % 99.9 ' RPD-% 7.2 00 Date Analyzed: U201 Spike Level (ug/L) 100 10 10 10 30. / MS Amount Found 110 9.56 9.66 9.70 29.8 MSD Amount Found 97.7 10.4 10.3 102 31.4 ' 103.9 99.8 99.8 99.5 102.0 RPI) D - % 11.8 8.4 6.4 5.0 5.2 Calibration verification was within acceptable limits. 1 1 1 E0031300 . Page 6 of 11 ' 148 SO. VINEWOOD STREET - ESCONDIDO, CA 92029 - PHONE (760) 735-3208 0 FAX (760) 735-2469 1 1 M(DRIts one ' LABORATORIES INC. ' QC Summary ' Client: EnvirOmega Consultants Project: Hubbard Contracting Matrix: soil ' Method 8260 1,1-13CE Benzene TCE Toluene CI-Benz 1 Recovery % QC Limits (60-120 (60-120 60-120 (60-120 60-120 ' RPD - % QC Limits <30 <30 <30 <30 <30 ' Date Analyzed: / 3/0 ' Spike Level (ug/kg) 50.0 50.0 50.0 50.0 50.0 ' Sample Amount 0.0 0.0 0.0 0.0 0.0 MS Amount Found 35.2 44.7 40.3 41.2 49.9 MSD Amount Found 38.7 49.2 44.1 42.1 55.4 MS Recovery 70.4 89.4 80.6 82.4 99.8 MSD Recovery 77.4 98.4 88.2 84.2 110.8 RPD - % 9.5 9.6 9.0 2.2 10.4 P ~I ' Calibration verification was within acceptable limits. 1 E0031300 Page 7 of 11 148 SO. VINEWOOD STREET 9 ESCONDIDO, CA 92029 9 PHONE (760) 735-3208 FAX (760) 735-2469 1 IM ®n r LABORATORIES INC. QC Summary ' Client: EnvirOmega Consultants - Project: Hubbard Contracting Matrix: water Method 8260 1,1-13CE Benzene TCE Toluene CI-Benz Recovery % QC Limits (60-120 60-120 (60-120 60-120 60-120 ' RPD - % QC Limits <30 <30 <30 <30 <30 ' Date Analvzed: 3/21/00 ' Spike Level (ug/L) 10.0 10.0 10.0 10.0 10.0 Sample Amount 0.0 0.0 0.0 0.0 0.0 LCS Amount Found 8.1 9.8 10.1 10.2 9.7 LCSD Amount Found 8.3 9.9 10.1 10.4 10.5 1 LCS Recovery 81.2 98.4 100.5 102.2 97.3 1 LCSD Recovery 82.5 99.3 101.4 103.5 105.2 ' RPD - % 1.6 0.9 0.8 1.3 7.8 1 1 1 1 1 1 1 I 1 1 1 Calibration verification was within acceptable limits. 1 E0031300 1 Page 8 of 11 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029 • PHONE (760) 735-3208 • FAX (760) 735-2469 M(6131tf I n LABORATORIES /IN C. QC Summary EPA 8270 for PNX9 Client: EnvirOmega Consultants Project:_ Hubbard Contracting Matrix: soil Method 8270 Acenapthene Pyrene Recovery % QC Limits (45-126 32-150 RPD - % QC Limits <30 <30 Date Analyzed: 3/30/00 Spike Level (ug/kg) 1000 1000 Sample Amount 0.0 0.0 MS Amount Found 824 870 MSD Amount Found 825 823 MS Recovery 82.4 87.0 MSD Recovery 82.5 82.3 i RPD - % 0.0 5.5 1 1 Calibration verification was within acceptable limits. E0031300 Page 9 of 11 148 SO. VINEWDOD STREET • ESCONDIDO. CA 92029 0 PHONE (760) 735-3208 FAX (760) 735-2469 1 1 'M(OBItf ®ne ► LABORATORIES INC. I QC Summary I Method Blanks I Client: EnvirOmega Consultants Matrix: soil . Project: Hubbard Contracting - Units - mg/kg I Method= TPH TPH TRPH <------------8020--------------> I Analyte = Gasoline Diesel MTBE Benzene Toluene Ethyl- Xylenes I Cc-C12 C13-C24 benzene Detection Limit - 10 10 10 0.1 0.05 0.05 0.05 0.15 1 SAMPLE I.D. I Date Analyzed: 3/13/00 I blank GC61F nd nd blank GCGR nd nd ' Date Analyzed: 3/14/00 i blank GC6F nd nd blank GCGR nd nd pate Analyzed: 3/20100 blank GC7 nd nd nd nd nd Date Analyzed: 3/29/00 blank Horiba1 nd E0031300 Page 10 of 11 148 SO. VINEWOOD STREET ESCONDIDO, CA 92029 • PHONE (760) 735-3208 • FAX (760) 735-2469 0 LABORATORIES INC. 4C Summary Method Blanks Client: EnvirOmega Consultants Matrix: water w_ Project: Hubbard Contracting Units--ug/L j Method= TPH TPH TRPH <------------8020--------------> Iffy Analyte - Gasoline Diesel MTBE Benzene Toluene Ethyl- Xylenes Ce-C12 C13-C24 benzene Detection Limit - 500 500 500 20 0.5 0.5 0.5 1.5 SAMPLE I.D. Date Analyzed: 3/13/00 water blank GCSF nd nd blank GC7 nd nd nd nd nd Date Analyzed: 3/14/00 water blank GC6F nd nd ® Date Analyzed: 3/20100 water blank GC6F nd nd ® blank GC7 nd nd nd nd nd A R 1 1 1 1 E0031300 Page 11 of 11 148 SO. VINEWOOD STREET ESCONDIDO. CA 92029 • PHONE (760) 735-3208 FAX (760) 735-2469 1 ,tp U lj w Eb V b a z° z° z° o v) V' a c rwA M ~iy p`~`p'l Q 5 V o p 9s ~e a s a N E" O o f 03 ea .fe ❑ ❑ o 0 00 1~~-II Lo tp I 8 o Lo (n :~4- Cc e~ v y~ C$ O 0 0 ~ ~ •w r ~ A U V ~ ~ o 0 Ilk o O a' ev r 11 ~ b0 b0 a ~ 1 ~1 ~~..~M/ Mew N SIZ >1 >1 8 ~ N• , CIO N o^ N d m a "s ~ 2 f- o 0 ic 6 t I!t 8 %J %j .9 61 U ri a a w b ~yo M ` 0 I el j 0) z z z o sJ~ Jy tov) g C S a O O~ Qs j~l J092 A A A Oj F Hd Qtj W N t ~i t} N u a w H O ❑ ❑ G N 1 i kl O S7 I C~l 0 N ~ M a A4 v N OM r1M vn Ml`9 ~M~ w a Cl b gO Pin 1 t 'qz S Q N I C1 +~3 u u pia q q a h H ti u' O u ,Q pap d o tz b oq g 1` Cc Q C 1 "J 'j %J v _ w u o E J J t zi: 2-1 J u u v, v U in ~ ~ pG a A4 M ° ~sJai a. c M °A4j ~ u p I s~J~ b z z zA ,a co S l ~ M oZ, IQs y A ~s sb g I A ~ ~ O j~l J~2~ A ~ A A s y ~ H N L ~ a N .J. •C w L G F ° ~ ..i v C ` S p to ~n 0 ' s' 4q Q° x a a o o Cie) 4N .03 O ~j V ~ o S /ow Poffma ~ _ ¢ ~ O ~ C d0 bD ~ L 00 Ict 0 (4 En ~ ?sJa~ +U~M ~ ~ ` ~ a o a~ IS ~J~s~, 6b ~ Z ~ z z v) v? a y y 0 9 1 well `o A ~ rs 9sb r a o~ r~r~~2~ ~ A A A r 4 zoo r~ L G' 7 O O ~ 0 0 p 96 n Ul In 00 i `n C d o (~o x x a 0 0 i o M v w 4 a C 4) Na 1 J p A x U T 4 o o 'v ~Rom! ' C L N r /NO ` y Kl~ Lf~ CO CO C i•' 2 3 ~ ~ y O o i i 1 l i Q a oo U G4 A4 04 io C, E r n It Q s, c 0 't0aGl m Ja~p fa9tp J c s ~ 00 t Q ~ a U U O G O ~ i z z z .14 mss, ~ 02 ~Jp o F o F O~~SI j~ ~J092 Il0~ •o ~Sl. 0`oo • goo O~pX A A Z T Z c ~ ~ Qr~ • is v c • is c J a E v L W ,e E m o 00 in a` U in o. U c o E- o o o c EE c F $ ❑ ❑ N 0 • o 00 N v • 1 E tn ~ M ~ T ` Z C A ~ C = A ~ A Obi d !0 d d C eD E _ e iin a (g in k U 'h c ®Lj ~ • L ZZ_ ,D o / R N amp I Z Mrs O ` A w 8 • y O a3i a°o cd E . B 8 j M _ v A 8 R~ 3 C Q a 1 . c Ec~ m e e ~ •o ~ in a V in a`. U in v~ a. cn v 0 F Zalb 968 (i1L) rgdwo ova F c O El T 1 Q) L 0 El 0 z; w Q) ❑ imL0) Jo WSZI S3SV9 03X13 C5 a a L!J IL'9ZlOWN911'HO C' ui m (9 L-01) A (VV L-01) S00A o 0 J y Q (0L£8) SVNd Z CD L ? Q (OZ09) SIV13IN SWId3l W (GO LOS) S1tl13W ZZ1 'OV3 N (L LOS) JO (L'ti09) d3a01903 D (2808) SOOd w W (11180811S3d z w (30LZ8) SOOAS d to Z Z (909z8) Soon Ni N a I8 LZ08lsNOean301vH l v ¢ (a LZ08) 381W I X318 c a Z w (0) (0) Hdl w c o `c° (9) Hdl U a co a a ° d v v v m. ' m m V D d v o 4 c cc aC IL N Q I L' d a co a I ~ ~ Z 3 c J Q L, y, J yam'' p O i. in US U') J V o c CC a J y U T, X a. 0. 15 0 O F U Lo , ar w n Q Q V 4 .0 0 N^ a f El 2cn 0 Cf) ~ r CD aC to I•. W _ i _ s $ = O Q al n .y J M 1 Q ( 'C C El 0 Q _j LL 0 CC D J m m m S n Q .J0 N ZZ Z ` OG_1 Ol O.c. a) L9 41 w 0 0) W CL F m" W O v r w ¢ ! N a z co J 2 ¢ = W r z N ` m m m Q v O W ¢ y ) N Q U J ¢ Q Z (n U C C C m J ¢ El W W w a: g Q U ►w- F co ai m ¢ ¢ III A alscience nvironmental aboratories, inc. March 27, 2000- Dave Eminhizer EnvirOmega Consultants 16732 Palmero Drive San Diego, CA 92128 Subject: 'Calscience Work Order No.: 00-03-0803 Client Reference: EOC-98-065/MOL#EO031300 Dear Client: Enclosed is an analytical report for the above-referenced project. The samples included in this report were received 03/22/00 and analyzed in accordance with the attached chain-of-custody. The results in this analytical report are limited to the samples tested and any reproduction of this report must be made in its entirety. r If you have any questions regarding this report, require sampling supplies or field services, or information on our analytical services, please feel free to call me at (714) 895-5494. Sincerely, ICIscience Environmental illiam H. Christensen Laboratories, Inc. Quality Assurance Manager Nick C. Adolfo Project Manager ~.~7440LincoinWay,GardenGrove,CA92841-1432 • TEL: (714) 895-5494 • FAX: (714) 8947501 r r alscience 1 Z nvironmental r 1, aboratories, Inc. ANALYTICAL REPORT EnviroOmega Consultants Date Sampled: 03/13/00 r 16732 Palmero Drive Date Received: 03/22/00 r San Diego, CA 92128 Date Extracted: 03/30/00 r Date Analyzed: 03/30/00 r Work Order No.: 00-03-0803 Attn: Dave Eminhizer Method: EPA 418.1 M RE: EOC-98-065/MOL#EO031300 Page 1 of 1 r All total recoverable petroleum hydrocarbon concentrations are reported in mg/kg r (ppm)• Reporting Sample Number Concentration Limit r HC-B1-2 4090 500 Method Blank ND 10 1 1 1 1 1 1 ND denotes not detected at indicated reportable limit. Each sample was received by CEL chilled, intact, and with chain-of-custody attached. ~.~7440UincoinWay,GardenGrov,9,CA92841-1432 • TEL: (714) 895-5494 -FAX(714)894-7501 r alscience &Pvironmental aboratories, Inc. ANALYTICAL REPORT EnviroOmega Consultants Date Sampled: 03/13/00 -16732 Palmero Drive - - - Date Received: - 03/22/00 San Diego, CA 92128 Date Extracted: 03/24/00 Date Analyzed: 03/24/00 Work Order No.: 00-03-0803 Attn: Dave Eminhizer Method: DOHS LUFT RE: EOC-98-065/MOL#EO031300 Page 1 of 1 All concentrations are reported in mg/kg (ppm). Organic Lead Reporting Sample Number Concentration Limit HC-61-2 ND 1.0 Method Blank ND 1.0 ND denotes not detected at indicated reportable limit. Each sample was received by CEL chilled, intact, and with chain-of-custody attached. 7440 Lincoln Way, Garden Grove, CA 92841-1432 a TEL: (714) 895-5494 • FAX: (714) 894-7501 &.alscience environmental jw aboratories, Inc. QUALITY ASSURANCE SUMMARY Method EPA 418.1 M EnviroOmega Consultants Work Order No.: 00-03-0803 Page 1 of 1 Date Analyzed: 03/30/00 Matrix Spike/Matrix Spike Duplicate Sample Spiked: 00-03-0983-7 Control Control Anal a MS%REC MSD%REC Limits %RPD Limits Total Recoverable Petroleum Hydrocarbons 104 104 55 -135 0 0-30 Laboratory Control Sample Conc. Conc. Control Anal a Added Rec. %REC Limits ® Total Recoverable Petroleum Hydrocarbons 200 208 104 70 -130 r i i i / 1 1 1 1 1 1 7• TEL: (714) 895-5494 -FAX-(714)894-77501 1 1 1 alscience 1 & nvironmental aboratories, Inc. 1 QUALITY ASSURANCE SUMMARY 1 Flame AA Metals (Solids) 1 EnviroOmega Consultants Work Order No.: 00-03-0803 1 Page 1 of 1 Date Analyzed: 03/24/00 1 Matrix Spike/Matrix Spike Duplicate 1 Sample Spiked: HC-61-2 1 Control Control 1 Anal a Method MS%REC MSD%REC Limits % %RPD Limits ' Organic Lead DOHS LUFT 62 62 50 -130 0 0-20 1 Laboratory Control Sample 1 Conc. Conc. Control 1 Anal a Method Added Rec. %REC Limits 1 Organic Lead DOHS LUFT 5.0 4.0 80 50 -130 1 L 1 1 1 1 1 I I 1 I 1 1 1 1 1 1 1 1 1 ~.7440L:incoinWay,GardenGrove,CA92841-1432 • TEL: (714) 895-5494 • FAX: (714) 894-7501 1 ' zu6-%s (tlL) D!4de=o a*a .N o 07 O > © C) m E o O w i 0 o O Q ~LCM~j"d 0 0 w (9b610) ~o (L'SZI S3Stl9 03X13 z N a v 0 in N WE) OINN91 I "HO m NN\ o p J (SL-01) A (01-01) SOOA Z (OL£9) SVNd 0 m o Q (OZ09) SWIM SIN101 V o a IZO in W (O0L09) S1tl13W ZZl `3v3 `Q W ( L 109) Jo (L'bOS) dO801903 D (Z909) SBOd w O W MSOB11S3d ' z Z Z (30LZ9) SODAS a ` a 4 a (80928) SODA 4) 2 z n N (OLZO9) SNOGUV301VH w M z Y cz, w~ z n ' a 8~ vi (81209) 391W I X318 m 4) ' z Q a (0) (0) HE ~0 3 ' wa ca t v a co (9) Hdl J 01 } d 1 _ to > 0 Op Q x v m y 1 c `I 1 U, cc a Q o m T 4) -W 4) N 1 ❑ I W N a d N 3 v N z cc a: 0 L Q t } c Lb z N ai n 1 = o LL T v o w L) = as z d r Q I O U) V 4LA L N a N o 0 F ~rn ~n v ❑ ~W V M aN IC~V r C0 ¢ Oj WG CN lo- F? UL) a O 1 rc z 00 J Dy3oC 0oa a V, i ¢ o d m m c ~00ui • O = ac7 3 0 z~ ~.Z>~ v ~z m o w ~QJ2v- N W S s97 N zcr z o v, F- z n Q O❑ w00 O (A me ~ r+- w IL w 5 a a ~ cn u aJm~`wOD -J ¢w p 4 v o¢ a 5b v o a J ¢r Q 9~ W ¢v z w V J Q w Q¢ a s W 0O Q } J ac W w `m W J •m •d a. a- J Q V F~ F~ ❑ V~ El co J O O ¢ ¢ ¢ 1 0 n LABORATORIES INC. 4/10/00 EnvirOmega Consultants 16732 Palmero Drive San Diego, CA 92128 Project Name: Hubbard Contracting Project No.: EOC-98-065 Attention: Mr. David Eminhizer R Mobile One Laboratories received and analyzed the following sample(s): Date Received Quantity Matrix Date Received Quantity Matrix 3/13/00 4 soil The samples were analyzed by one or more of the EPA methodologies or equivalent methods as specified below. TPH CA DHS "Total Petroleum Hydrocarbons" r BTEX EPA Method 8020 TRPH EPA Method 418.1, modified for soils VOCs EPA Method 8260 The results are included with a summary of the quality control procedures. Please note that the symbol "nd" indicates a value below the reporting limit for the particular compound in the sample. Flags qualifying the data are ■ explained in footnotes on the same report page as they occur. Please feel free to call us to discuss any part of this report or to schedule future projects. Sincerely, ' Re ecca L. Johnson Jam E. Picker, Ph.D President Lab Director Mobile One laboratories is certified by the California Department of Health Services (certificate #s: ' 1194,1561,1921,2088,2278), and the Arizona Department of Health Services (certificate AZM466). MOL Project # E0031300A R ' 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029 • PHONE (760) 735-3208 • FAX (760) 735-2469 Ilk 0 n LABORATORIES INC. Report Summary Client: EnvirOmega Consultants Matrix: soil Project: Hubbard Contracting Units - mg/kg Method= TPH TPH TRPH <------------8020--------------> Analyte = Gasoline Diesel MTBE Benzene Toluene Ethyl- Xylenes C6 C12 C13"C24 benzene Detection Limit - 10 10 10 0.1 0.05 0.05 0.05 0.15 SAMPLE I.D. Date Analyzed: A&M HC-B8A-5 nd nd HC-B1A-5 nd nd HC-B8-5 nd nd HC-137-5 nd nd r ~ r Footnotes: nd = Not found above the detection limit. 8, = Gasoline range organics not identified as gasoline. # = Diesel range organics not identified as diesel. Sample dilution was required. Detection limits were adjusted accordingly. E = Analyte amount exceeds calibration range. Amount quantitated by extrapolation. 10 = This compound has been screened by EPA method 8020. Any positive results should be confirmed by a second analysis. = A second analysis has been performed on this sample by Mass Spectrometry. The results are as indicated. Analyses performed by: Bret Hutchinson E0031300A Page 2 of 4 148 S0. VINEWOOD STREET " ESCONDIDO, CA 92029 • PHONE (760) 735-3208 9 FAX (760) 735-2469 1 M(OBIts n LABORATORIES INC. QC Summary Client: EnvirOmega Consultants _ Matrix: soil s... Project: Hubbard Contracting ' Method TPH TPH TRPH MTBE Benzene Toluene Ethyl- Xylenes gasoline diesel benzene APR - % OC Limits 57-125 (67-125 5-126 60-125 (60-125 59-125 (52-125) (60-12 RPD - % OC Limits <30 <30 <30 <30 <30 <30 <30 <30 Date Analyzed: A&= Spike Level (mg/kg) 151 251 MS Amount Found 148 264 ® MSD Amount Found 149 239 APR - % 98.3 100.2 RPD-% 0.7 9.9 1 ~i i i i i i i i Calibration verification was within acceptable limits. E0031300A Page 3 of 4 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029 • PHONE (760) 735-3208 FAX (760) 735-2469 1 1 one 1 1 i LAB0RAT0RIE5 INC. QC Summary 1 Method Blanks 1 Client: EnvirOmega Consultants Matrix: soil 1 Project: Hubbard Contracting Units - mg/kg 1 1 Method = TPH TPH TRPH <------------8020--------------> r Analyte = Gasoline Diesel MTBE Benzene Toluene Ethyl- Xylenes Cs-C12 C13-C24 benzene 1 Detection Limit - 10 10 10 0.1 0.05 0.05 0.05 0.15 r SAMPLE I.D. 1 Date Analyzed: A r blank GC6F nd nd blank GC6R nd nd 1 r 1 1 r 1 1 1 1 1 r 1 r 1 1 r 1 r 1 1 1 1 r 1 E0031300A 1 r Page 4 of 4 1 148 So. VINEWOOD STREET • ESCONDIDO. CA 92029 9 PHONE (760) 735-3208 FAX (760) 735-2469 M k404 ~~j GSM a c T9 ~ _ • y, p j~r~~z~ _ ~ a o 0 r' N a co O L C I b • 3 Ll m I H O O O 1 ~ ~ ~ y" U rw ^ ~ H ' (h v+ w ' c - tv 1 ~ o'er 2 o ~N 0 b _ w IS ~ Y , ~ . OD DD b0 w 10 Ole, 71 ' 14- X )I it a y 3 NN~N t C1 am v y f ,r a a oc• op EA A z~ LL a `1 Ito 0 O` ~9s rlp 0 ~s110~~ x 1 O O o v v 1 o n o ~ ~ a "x x c 00 Q _ \ n .i p w r~ M M M c-~ Q M 8 a .t s r 41 1 ~ r O 3 . d ;'=e vJJ ~fVvV JVVV v ?n ca ti+ ts4 Cn G MR" cd V) a A g, rs~ s6~ VP 8 's ~l Q $s rp~L~~ U r Ls. t I E-+ o k O O V Y cc ,i V en q, .0 C 4 4- 4n (n ~ ~ Leo ~ ~ x a N ! M u M e v » ! 0 _ 'p ~ ~ 1 M:r~-SSA 10 jft 0. b o /mot FF t 3 ~ ~ s h e~ too .o COO CC c9c %C ~!V V v •c v c Q ~ VV v~ gg V 99 cqs i f~ z . z z .r Ar ~+I h I v Q A 4p 9,Pb 089 ~ ~ IU Sro~ • • IO x' s u 1 = 1-2 C- o ` o ❑ ❑ C 1 r h v v u G - 9 b q u„ ~ ' aG IG rs; c 1~ N ~ e 1u ~ v w 1 oM MT pN NN i b ~ C 1 ~ . Q v ~ u 1 4 a _ x 1a N N~ °9 S3 IN 'a I %J NJ 14: 19 M (@Bits one I LABORATORIES INC. 4/21/00 EnvirOmega Consultants ' 16732 Palmero Drive San Diego, CA 92128 ' Project Name: Hubbard Contracting Project No.: EOC-98-065 ' Attention: Mr. David Eminhizer ' Mobile One Laboratories received and analyzed the following sample(s): ( Date Received Quantity Matrix Date Received Quantity Matrix 4/6/00 5 soil 1 4/6/00 5 water 1. I The samples were analyzed by one or more of the EPA methodologies or equivalent methods as specified below. TPH CA DHS "Total Petroleum Hydrocarbons" BTEX EPA Method 8020 TRPH EPA Method 418.1, modified for soils VOCs EPA Method 8260 The results are included with a summary of the quality control procedures. Please note that the symbol "nd" indicates a value ,below the reporting limit for the particular compound in the sample. Flags qualifying the data are explained in footnotes on the same report page as they occur. Please feel free to call us to discuss any part of this report or to schedule future projects. Sincerely, Rebecca L. Johnson President Mobile One Laboratories is certified by the California Department of Health Services (certificate #s: 1194,1561,1921,2088,2278), and the Arizona Department of Health Services (certificate AZM466). MOL Project 0 E0040600 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029-1921 • PHONE 760 735-3208 • Ong mellit LABORATOR INC. Report Summary Client: EnvirOmega Consultants Matrix: soil L - Project: Hubbard Contracting Units: mg/kg 1 Method= TPH TPH TRPH <------------8020--------------> Analyte = Gasoline Diesel MTBE Benzene Toluene Ethyl- Xylenes Cs-C72 C13-C24 benzene Detection Limit - 10 10 10 0.1 0.05 0.05 0.05 0.15 SAMPLE I.D. Date Analyzed: 4/6/00.4/7/00 Date Analyzed: 4/12/00 HC-B8A-6 nd nd nd nd nd nd nd HC-B7-6 nd nd nd nd nd nd nd HC-B1A-6 nd nd nd nd nd nd nd HC-B8.6 nd nd nd nd nd nd nd HC-B8-6 nd nd nd nd nd nd nd nd r r ~r ~r Footnotes: nd = Not found above the detection limit. & = Gasoline range organics not identified as gasoline. I # = Diesel range organics not identified as diesel. IP " = Sample dilution was required. Detection limits were adjusted accordingly. E = Analyte amount exceeds calibration range. Amount quantitated by extrapolation. = This compound has been screened by EPA method 8020. Any positive results should be confirmed by a second analysis. = A second analysis has been performed on this sample by Mass Spectrometry. The results are as indicated. Analyses performed by: Bret Hutchinson E0040600 Page 2 of 12 M(8111te ong LABORATORIES INC. Report Summary Client: EnvirOmega Consultants Matrix: water - - Project: Hubbard Contracting Units: ug/L. Method= TPH TPH TRPH <------------8020--------------> Analyte = Gasoline Diesel MTBE Benzene Toluene Ethyl- Xylens CG"C12 C13-C24 benzene ' Detection Limit - 500 500 500 20 0.5 0.5 0.5 1.5 SAMPLE I.D. Date Analyzed: 4/6/00.4/7/00 Date Analyzed: 4/10/00 HC-B8A water nd nd nd nd nd nd nd HC-B7-water nd nd nd nd nd nd nd e HC-B1Awater nd nd nd nd nd nd nd HC-B8-water nd nd nd nd nd nd nd ® HC-B9-water nd nd 600 1 1 Footnotes: nd = Not found above the detection limit. & = Gasoline range organics not identified as gasoline. ' # = Diesel range organics not identified as diesel. * = Sample dilution was required. Detection limits were adjusted accordingly. 1 E = Analyte amount exceeds calibration range. Amount quantitated by extrapolation. This compound has been screened by EPA method 8020. Any positive results should be ' confirmed by a second analysis. = A second analysis has been performed on this sample by Mass Spectrometry. The results 1 are as indicated. ' Analyses performed by: Bret Hutchinson ' E0040600 Page 3 of 12 1 148 S0. VINEW 9 Do LABORATORIES INC. M 'c 5 A A CL 2 d. 0 tv E m E cm 7 N N ~ o O O d p W m N d cm C C C C C c c N C C c c C C C C C C C C C C C C C C C C c j. m c; Q V ~ N O c N N G C C G C C C C C C C C C C C C C C G G c c C C C C C G C C 7: is Q p 0 cc 7 C ^ - U N V C N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ep C O m .2 cc C m o_ N N C O t cQ t O C C N y C yCy W= N C.0 N C= Cc W C C y C= a C O L E m m E ct L W am ww o c ev m m e Er c voc) o c ~o °c m ow.- m-° Q E E e ° cr5w we E co .22 e t° e mao Q 6v~•ctcOEUQo E°a~Om o~crt oa Z H H U- O O y L O m _p O € = p m e _ E Q E e °'•y y G Et E 6 °s mc`!rr cr3•~L~ ~ o~ C m a O O E U O LO o g U N O O F- C C p 9 O E r' C 0 C4 d m 'h 0 ='D 7 a y G G v~ E o Q ~4 o` EE .z eN c N Ea C U QQU UUS co U•C W N ~t ' o.c _Q c ~Ne~ ci '3Uao.-.z0VZco .-m0~.=w- W 148 SO. VINEWOOD STREET ESCONDIDO, CA 92029-1921 p M(oBlte onnn LABORATORIES INC. } 10 30 W ~i ~a v o a ~E c N P) E Ln o a ado a o m > ~ ~ v•vv•vv-o•c~ccvv~~•vv•ovv~v~•v~v•vvvv~ 8r~o g 3 c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c~ 0000 ao I) W V c a v~•o~vv•vw•v•v•v~vvvvvvv•ovv~v~vv-cvv ~~nao~o~ t) H C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C N ap C ~ C t e0 C A2 V E N M N J O N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N W D U ~ 6 A Cs 4h 20 Pill U Co CO CO 40 E 12 ED C O~ Q a c We .WC N C c a C N W C° c >a W $'i N N may dI?aci d'~W)wwV w= W= Q L d C C N d N 2 0 C to m 0 w e C c N C1 Q 4 C m N N C S A ~ *J e ~i a 2-- ° N aci N c 0 c N r- m3? d ~E E e b o a o v~ a Z oc N a~ c € a~ cri~ c E 0 0- E- o 0 o f cry c 0-5 H o m rW,c0w.CL Q ~'cE° 'coo ~'-E'c-Wc mm m co i a o f ~ac~x o c o oc~F- CL o o a cW H m E Q o E ~c~c1~ E Eu~rtm.tm ooo~oo.~ ~Q~ dm ~ g a y~=~r- X~ O NON aOr~UU ~N yc~efmNNN NK WN mN p~ C Q U n. V~ F- U W E 0(5 m. - c m cV et w. r= m b. c 2 Z O H Q W 148 S0. VINEWOOD STREET ESCONOIDO, CA 92029-1921 • PHONE 760 735-3208 • FAX (760) 735-2469 M(oRlts orn1e LABORATORIES INC. 3 ' C m~ yy tt~~ NN yy yy yy y yy yy O y m O m m 0~ m m N+ WI O C N m o N 0 O d O N N d 10 co wQ. >.Y%A~c c :1% >►c >+>+~A~►l►c A>+T~c :0+ W cV v C o y r O_ V f t/~ N N to ~ Nm I! O U w 0.1 r p c N ~ O 4. c0 ~ ro f con wo cc 2 to r' a ~ W ~ to ce cpNN ~cOoY1~ tG~~N ~NCOC? V- V- a?V- eM-9V- C r r w UN O 0M I~cG~Od 00r-tpMO~GNI~et a-OfOtA D w OI co O C O O •3 C a+ Q U W o U U U U U ~0 U U U U U U m i ew c m > a m m o c c m m e a ~ C m c~ mmm~mmc= cvcoc•cm c Q cpmc w= E m z e $'.o ccv cc 1? 06 " 0 A a m m o o c m m E wr °~sw S E 0 CL E o° cc c eL o o~ 8 E R E w c e 'pop a Q-5 o-O a a~ S e 155 f3 E B o ZUH- IS m o mzc O m- 0 0 € DL O o m o~ E 'S Lo ~Op UO 17 U CO y o O E- c A H Cl O M O N O O _ E U O Z O 5. N 'o c m a~,>+ o ~E otU cr ~UU~ o E•-U U Nr~U QE E m~NCG p E C C O = C 7= N 4 L a ~ cc N d c N e a E N A Q va 0Q¢o U oUSmUr~~~2 rci130m~.-U.-mF-~In o..►- w r 148 SO. VINEWOOD STREET • ESCONDIDO, CA 92029-1921 • PHONE (760) 735-3206 FAX (760) 735-2469 i I ( M(661tl ► o rn s I LABORATORIES INC. I c W > 1 O 1 ~ I V 1 x iri I 1 y 1 co N N y t/~ N N N V) N N N V~ N Ul t 1/ O d N O d N O O O N Q o a.I T C A N~+ Ole ~ A ~ OIL N>+ C ~ c c ~ c c C ► WN 1 m I ZO N 0 H o0 Ism ~ I ~ _ .r N p r. N co I> c a a. I o H O IQ a c ~ a I W aEi IV p~Na 04 c O CD r- CDNle toNr- o ~QM~OI~.N-MOON~N~~ , c U I c V 1 ° (L w • 0 01-~1~-OODtf)tflr-~~N~OMO OI~I~MOM.y ~-t01~OtO~flM t~MOOOOf V LLetM~M'a'O»d"~t'►f1~A~fl~A~A~O~~'etf0~f'~f1M'V'~~MMMI~it'~000OOf00 C im 7 m O O 7 R I O C a J N to N to 30 U ~ p U r•.-~~ p 1 Ix c U U c UC00cooco W U ca G Q 2 4) 0. N ccc c O c C e d O C C C C° c Z .C c cY00p O C 7 C d N N C C C p N c O N N N~ 119 m W= O N EE O E O d N CD C N N N d 'p (D .2 c .2 CL r- r- .0 cc E N O N c UO N E o N 4) s N N a c a O ..C O O co a -ft Z c c N c~' c E o o b E Qo o c o E cr3 o m.rc3.yai,~ °o d o- o~ c1T a~ dw a~•c ~•c t a,•c Q U - B•c- p c Q mm m ~o 0 a o cry E o~N'`C1 C O N C4 G.O~ O O a._ ~ :cam E.. U U. X N E EC~ B E t t U. Y;m in poo ;ooh cctc$ L a H ~0 mm c d, d E O X d 10 E tv O N: E 2 ~X a o•=N C.EMUU CN 0 c~4mNNN Ca ccN Oto pO C O Um ~AUI-~Uw~ E of~m cm.-c44: 1. 0 c.= szr=(AOr=H~Q w 1 148 SO. VINEWOOD STREET ESCONDIDO, CA 92029-1921 • PHONE (760) 735-3208 9 FAX (760) 735-2469 M(DBIte •ng LABORATORIES IN C. QC Summary Client: EnvirOmega Consultants Project: Hubbard Contracting Matrix: soil Method TPH TPH TRPH MTBE Benzene Toluene Ethyl- Xylenes ' gasoline diesel benzene APR - % QC Limits (67-125) (67-125)-(75-125) (60-125) (60-125 (59-125 (52-125) 60-12 <30 <30 <30 <30 <30 <30 <30 RPD - % QC Limits <30 1 ' Date Analyzed: 4/6/00 Spike Level (mg/kg) 151 251 1 MS Amount Found 148 264 MSD Amount Found 149 239 1 APR - % 98.3 100.2 ' RPD-% 0.7 9.9 ' Date Analyzed: 417/00 ' Spike Level (mg/kg) 82 MS Amount Found 88 MSD Amount Found 85 ' APR - % 105.5 ' RPD - % 3.5 1 ' Date Analyzed: 4/12/00 Spike Level (mg/kg) 1.00 0.1 0.1 0.1 0.3 MS Amount Found 1.17 0.097 0.093 0.096 0.293 MSD Amount Found 0.946 0.100 0.099 0.100 0.311 105.8 98.5 96.0 98.0 100.7 APR-% 21.2 3.0 6.3 4.1 6.0 RPD-% • Calibration verification was within acceptable limits. E0040600 Page 8 of 12 9 PHONE (760) 735-3208 FAX (760) 735-2469 ~ M(MBItf o rnl r LABORATORIES INC. QC Summary Client: EnvirOmega Consultants Project: Hubbard Contracting Matrix: water Method TPH TPH TRPH MTBE Benzene Toluene Ethyl- Xylenes gasoline diesel benzene APR - % QC Limits (75-125) 5-125 (60-125 (60-125 69-125 (63-125 (60-125) 57-12 RPD - % QC Limits <30 <30 <30 <30 <30 <30 <30 <30 Date Analyzed: 4/6/00 Spike Level (ug/L) 7,600 LCS Amount Found 7,740 LCSD Amount Found 7,330 r APR - % 99.1 r RPD-% 5.4 Date Analyzed: 4/7/00 Spike Level (ug/L) 7,600 4,100 - LCS Amount Found 7,600 4,100 r LCSD Amount Found 8,460 4,000 APR - % 105.7 98.8 RPD-% 10.7 2.5 Date Analyzed: 4/10/00 r Spike Level (ug/L) 100 10 10 10 30 MS Amount Found 87.0 9.44 9.40 9.36 28.6 MSD Amount Found 93.8 9.61 9.49 9.62 29.1 APR-% 90.4 95.3 94.5 94.9 962 RPD - % 7.5 1.8 1.0 2.7 1.7 Calibration verification was within acceptable limits. E0040600 Page 9 of 12 14R Sn. VINEWDDD STREET • ESCONDIDO, CA 92029-1921 • PHONE (760) 735-3208 • FAX (760) 735-2469 (90) [1 Its I offs LABORATORIES INC. QC Summary Client: EnvirOmega Consultants Project: Hubbard Contracting Matrix: water Method 8260 1,1-DCE Benzene TCE Toluene CI-Benz Recovery % QC Limits (60-120) (60-120) (60-120) (60-120) (60-120 RPD - % QC Limits <30 <30 <30 <30 <30 Date Analyzed: 4/7/00 Spike Level (ug/L) 10.0 10.0 10.0 10.0 10.0 Sample Amount 0.0 0.0 0.0 0.0 0.0 LCS Amount Found 9.4 10.3 9.5 10.6 9.1 LCSD Amount Found 9.4 10.1 9.6 9.7 9.6 LCS Recovery 93.7 102.6 94.6 106.0 91.2 LCSD Recovery 93.8 101.3 96.2 97.4 96.0 RPD - % 0.1 1.3 1.7 8.5 5.1 Calibration verification was within acceptable limits. E0040600 Page 10 of 12 148 SO. VINEWOOD STREET ESCONDIDO, CA 92029-1921 9 PHONE (760) 735-3208 FAX (760) 735-2469 r M(aBlts ong LABORATORIES INC, QC Summary Method Blanks i Client: EnvirOmega Consultants Matrix: soil i Project: Hubbard Contracting Units: mg/kg Method= TPH TPH TRPH 8020--------------> Analyte = Gasoline Diesel MTBE Benzene Toluene Ethyl- Xylenes Cs-C12 C13-C24 benzene Detection Limit - 10 10 10 0.1 0.05 0.05 0.05 0.15 i SAMPLE I.D. Date Analyzed: 4/6/00 blank GC6F nd nd blank GC6R nd nd ' Date Analyzed: 4/7/00 1 blank Horiba1 nd ' Date Analyzed: 4/12/00 blank GC7 nd nd nd nd nd 1 1 1 1 i E0040600 Page 11 of 12 ' 148 So. VINEWOOD STREET ESCONDIDO, CA 92029-1921 • PHONE (760) 735-3208 • FAX (760) 735-2469 1 M(OBItions LABORATORIES INC. QC Summary Method Blanks Client: EnvirOmega Consultants Matrix: water Project: Hubbard Contracting Units: ug/L Method= TPH TPH TRPH <------------8020--------------> Analyte = Gasoline Diesel MTBE Benzene Toluene Ethyl- Xylenes CS-C12 C13-C24 benzene Detection Limit - 500 500 500 20 0.5 0.5 0.5 1.5 SAMPLE I.D. Date Analyzed: 4/6/00 water blank GCSF nd nd Date Analyzed: 417/00 blank Horibal nd blank GCGR nd nd 1 Date Analyzed: 4/10/00 blank GC7 nd nd nd nd nd 1 1 1 1 i ' 1 1 ' I E0040600 ' Page 12 of 12 1 148 SO. VINEWOOD STREET ESCONDIDO, CA 92029-1921 • PHONE (760) 735-3208 FAX (760) 735-2469 ~s IAO -%_0 4.4 W ! 610~ d) U1 Q .y U Z Z Z a cc u o^ r a o ~ 15~~ v~ U Z S y 02 J~ J E u ai ec j ° ° ca F lop xIOI;" 0.~ ~ U `7Qr ~ ~ ~ E Z 00 L ` , • • a E a ~ eD ° o 00 ° G cc u .1i1 in d U in a U c r o o r E- O O O E E Li U- P P N ° ~i M ~ R 00 N .r. o ICA . M W a w c ~p e Z Z r O r E E 10% 1 z --~b . Q, Ui m. c3 in a` Cg 'y Od -E z 0 1!.-,: 0 I-T 14 o Dry L 05 1 \ . ~.l O a =O E cc d• O m ' A a z Q ~ a ~v ) 1 , 1► ~ 1 I A v g A u p E., • a E • e E e 00 G~. cn ••ae in a` C~ in a` Cg y U (A fl avr ~ ~ ° r 9 ~~`rJa 'ro ra~~4o0 1 Q q °9pp r ke Vl N 4-4 . `O Iros.,fr~66 ~ f~P p o°~n ~ a Z c a. .0 a z z z b u a~ •N 2 SJ~ A F A E_ M co O ~1/r l ~J~9 A sj~~ dl's` ol FT slo ~sIO~ IRI~~.? ~ • w E w ~ pXO9l:? Z ~ E Z a OG 12 0 A E A u a t ~ ( ` m C C ~ C G x iin ~i U iT a U v r ti Cl Cl U- ° Y N O ~ 00 v d o M ~3 M w Z 6. C 96i 6. C 'P5 E E. E Cg H o. U a > a N Q u z~ %U • 0 40 co E E O y cn z z ~j ° Q •a E in ci Cg in o`- Cg v_ ar Ri CA c U v~ a alscience ' nvironmentai aboratories, Inc. 1 I April 27, 2000 I 1 I Dave Eminhizer 1 EnvirOmega Consultants 16732 Palmero Drive San Diego, CA 92128 1 1 I I Subject: Calscience Work Order No.: 00-04-0604 1 Client Reference: Hubbard Contractors/MOL#E0031300B Dear Client: I Enclosed is an analytical report for the above-referenced project. The samples I included in this report were received 04/20/00 and analyzed in accordance with I the attached chain-of-custody. I The results in this analytical report are limited to the samples tested and any 1 reproduction of this report must be made in its entirety. 1 If you have any questions regarding this report, require sampling supplies or field services, or information on our analytical services, please feel free to call me at 1 (714) 895-5494. 1 1 Sincerely, 1 C 1 v C (science Environmental William H. Christensen 1 Laboratories, Inc. Quality Assurance Manager 1 Nick C. Adolfo 1 Project Manager 1 1 1 ~~~77444400LLiinnccooinnWwaayy,,GGaarden Grove, CA 92841-1432 • TEL: (714) 895-5494 FAX: (714) 894-7501 1 ~ &.~alscience ~ ANALYTICAL REPORT JZ nvironmental 1 aboratories, Inc. 1 EnvirOmega Consultants Date Received: 04/20/00 16732 Palmero Drive Work Order No: 00-04-0604 San Diego, CA 92128 Preparation: Total Digestion Method: EPA 6010B Project: Hubbard Contractors/MOL#E0031300B Page 1 of 1 t Client Sample Number: Lab Sample Date Date Date 1 Number: Matrix: Collected: Prepared: Analyzed: QC Batch ID: ' F HC-BI-WATER 00-04-0804-1 Aqueous 03113100 04/21100 04124100 0004211cs3 ' Parameter Result RL DF Qual Units Lead 0.0988 0.0100 1 mg/L Method Blank 097-01-003-1,189 Aqueous NIA 04121100 04121100 000421lcs3 ' Parameter Result RL DF Qual Units ' Lead ND 0.0100 1 mg/L RL -Reporting Limit DF -Dilution Factor Qual -Qualifiers ' 7440 Lincoln Way, Garden Grove, CA 92841-1432 TEL: (714) 895-5494 FAX: (714) 894-7501 alscience nvironmental Quality Control - Spike/Spike Duplicate aboratodes, Inc. l i 1 EnvirOmega Consultants Date Received: 04/20/00 16732 Palmero Drive Work Order No: 00-04-0604 San Diego, CA 92128 Preparation: Total Digestion Method: EPA 60108 ~ Project: Hubbard Contractors/MOL#E0031300B 1 Date Date MS/MSD Batch t Spiked Sample ID Matrix Instrument Prepared Analyzed Number I` 1 00-04-0615-1 Aqueous ICP 3300 04121100 04124/00 042100=3 ' Parameter MS %REC MSD %REC %REC CL RPD RPD CL Qualifiers 1 ' Lead 103 96 80-120 6 0-20 1 7440 Lincoln Way, Garden Grove, CA 92841-1432 • TEL: (714) 895-5494 • FAX: (714) 894-7501 I 1 I L alscience 1 Znvironmental Quality Control - Laboratory Control Sample 1 LF aboratories, Inc. 1 Date Received: 04/20/00 EnvirOmega Consultants Work Order No: 00-04-0604 16732 Palmero Drive Preparation: Total Digestion San Diego, CA 92128 Method: EPA 60108 Project: Hubbard Contractors/MOL#E00313006 Lab File ID LCS Batch Number LCS Sample Number Matrix Instrument Date Analyzed i ICP 3300 04/21100 000421.1 0004211cs3 097-01-003-1,189 Aqueous . %Rec %Rec CL Qualifiers Parameter con. c Added Conc Recovered . 1.00 1.01 101 80-120 Lead 7440 Lincoln Way, Garden Grove, CA 92841-1432 • TEL: (714) 895-5494 • FAX: (714) 894-750 1 1 Q.,,alscience GLOSSARY OF TERMS AND QUALIFIERS 1 Aw nvironmental 1 Laboratories, Inc. 1 1 1 Work Order Number: 00-04-0604 1 1 Qualifier Definition 1 ND Not detected at indicated reporting limit. 1 1 i i i i 1 1 1 i i ' 1 i / / / 1 7440 Lincoln Way, Garden Grove, CA 92841-1432 • ~TEL(714)895-5494 • FAX: (714) 894-7501 ZOL6-e6e (biL) ~!qd-o aura 1 N P m 0) \ m o 04 E ki - } - 0 0 0 Q 1v o Z w Z M MMO) JO WE) S3Stl9 03X13 o m Q _ 1 a a N I l'SZ) OWN91 I °H0 m J (5l•01) J0 (VVL-01) SOOA o 0 0 Z (0 l£8) StINd Q (OZ09) MAW SWId01 o a W 180L091 S1tl13W ZZl'Otl0 W I l 1081 JO 1l'ti05) d080 1803 D (ZOOS) S80d &N! a ww H w (V 1808)1S3d W hOCZB► SDOAS a w D (809ZS) SODA w z J (9208) SNOSUVO01tlH o z 8 (0 LZ08) 301W I X318 m C z 3 ~ 101(0) Hdl 101 cm cm .0 ¢a co (9) Hdl o d co 8 > o VI ~ m .d m N N o~ o Y 3 m U 0 Lo N a 1 Y W o_ ~ cn Q ct~, Z Q p a 0 o 10 w z N ~h1 } cc J Q .0 w a IL -i 1: 0. CL la, N Q , n< d (D 0 k~j 4 cc CD Q ! co w o `o r 00 y ❑ N> ai dw C'a T a C_ 3 o.. Q a p < C W X Q 1,~1 J U ' 04 w LL ❑ Q❑ 0 _ - cc U- 0 U W• z Q V J m a Z pc ~v N p N F~ a) c c Z OC Z o rn o o (c} (rl 0 w❑ w o 0 U _ -Z~ w Q 1 2 W CL U J 1 mC Ix 4, u-J ~Qo v Jo ¢ ~CC cr a a N aomi Q T > Z o 0 m y N <V Jo w d z t$ t oa J Q w 1 a a 3 a 31 } Q Q J ~ 5 Q U ww- j❑ C❑ N 3=0 Q Q C