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Home My WebLink AboutCT 98-18; Carnation Property; Tentative Map (CT) (30)I E I 1 I ADDENDUM TO "AGRICULTURAL CHEMICAL RESIDUE SURVEY, I CARNATION PROPERTY, APN 215-070-08, CITY OF CARLSBAD, " SAN DIEGO COUNTY, CALIFORNIA 92009," W.O. E2759-SC, - BY GEOSOILS, INC., DATED OCTOBER 11,1999 FOR C RYLAND HOMES 15373 INNOVATION DRIVE, SUITE 300 r SAN DIEGO, CALIFORNIA 92128 W.O.E2759-SC OCTOBER 18,1999 E c c E I E ,-:. E ..: •••." • '.'...'-.'.,. -.:•.,' ' C , •::''•.•' '• ' Geotechnical • Geologic • Environmental 5741 Palmer Way • Carlsbad, California 92008 • (760)438-3155 • FAX (760) 931-0915 October 18,1999 W.O. E2759-SC Ryland Homes 15373 Innovation Drive, Suite 300 San Diego, California 92128 Attention: Mr. Jim McMenamin Subject: Addendum To "Agricultural Chemical Residue Survey, Carnation Property, APN 215-070-08, City of Carlsbad, San Diego County, California 92009," W.O. E2759-SC, by GeoSoils, Inc., dated October 11,1999. Dear Mr. McMenamin: Pursuant to the request of Mr. Nasser Sionit, Ph.D. (Environmental Health Specialist, Department of Environmental Health, County of San Diego) and your verbal authorization, GeoSoils, Inc. (GSI) is providing the following addendum to our agricultural chemical residue survey report on the Carnation property in Carlsbad (Establishment No. H 38425). The purpose of this addendum was to evaluate the recommended burial depths of agricultural chemical residue affected soils provided in the above subject survey report, relative to depth to groundwater on the subject property. In addition, the information provided herein is to clarify and/or revise specific conclusions and recommendations submitted in the initial residue survey report. The information provided herein is based upon information provided by Mr. Sionit in a meeting on October 7, 1999, as well as subsurface data collected from a boring drilled on the site on October 11, 1999. All conclusions and recommendations not revised herein remain applicable, and should be adhered to during remedial earthwork. Scope of Work In fulfillment of the San Diego County Department of Environmental Health (DEH) requirements regarding the installation of test borings/groundwater monitoring wells, GSI submitted a permit application to the DEH on October 8,1999. Due to time constraints of the subject property transaction, Mr. Michael Vernetti (Supervisor Environmental Health Specialist) reviewed the permit application and provided the test boring permit over the counter the same day (permit No. W98519). A copy of the permit application and boring permit are provided in Appendix A. The boring location is provided on Figure 1. Proposed Borir>ig All locations are approximate. LOS ANGELES CO. RIVERSIDE CO. ORANGE CO. SAN DIEGO CO. BORING LOCATION MAP Figure 1 W.O. E275&-SC DATE 10/99 SCALE r=100f On October 11,1999, a licensed well drilling contractor, West Hazmat Drilling Corporation (C57 No. 554979), drilled a 51-foot deep boring (B-1) in the east-central portion of the subject site. The eight-inch diameter boring, drilled with a hollow stem auger, encountered medium dense to dense terrace deposits consisting of slightly moist, silty sands and silty clayey sands, overlying sandy claystone/clayey sandstone bedrock the Eocene age Santiago Formation. "Perched" groundwater was encountered at the terrace deposit/Santiago Formation contact, at a depth of approximately 40± feet. After a half hour waiting period, the water level in the boring was measured at a depth of 46 feet. A log of the boring (B-1) is provided herein as Appendix B. Since the cuttings displayed no physical signs of contamination (i.e., no noxious odors, no discoloration), cuttings were placed on the surface of the property, down slope from the boring. The boring was backfilled with a bentonite slurry. Prior to sampling, groundwater was purged from the boring for approximately one half hour with a disposable plastic bailer. The purged water was stored in a 55-gallon drum that was removed from the property by the drilling contractor. The water was observed to have a high settleable solids (i.e., silt and clay) content. There was no unusual discoloration (i.e., sheen) noted on the water and there were no noxious odors detected. The groundwater sample was collected by a registered geologist, stored in sterilized glass containers provided by the testing laboratory (D-TEK Analytical Laboratories, Inc.), and transported to the California Department of Health Services (DHS) certified laboratory the same day, following proper procedures. A Chain-of-Custody document, recorded with the laboratory, is included in Appendix C. Based upon information provided by Mr. Nasser Sionit in the October 7,1999 meeting, as well as during a telephone conversation on October 12, 1999, the water sample was analyzed for the following: Chlorinated Pesticides and PCB's, utilizing EPA test method 3510/3620/8080. • Total Recoverable Petroleum Hydrocarbons (TRPH), utilizing EPA test method 418.1. • Total Petroleum Hydrocarbons (TPH) - gas and diesel, utilizing EPA test method 8015 (modified). • Benzene, Ethylbenzene, Toluene, and Xylenes (BTEX), utilizing EPA test method 8020 (modified). Chemical Test Results Laboratory test results reported concentrations of Chlorinated Pesticides and PCB's at less than the laboratory detection limit (i.e., <DL). Ryland Homes W.O. E2759-SC Carnation Property, Carlsbad October 18,1999 File:e:\wp7\env\e2700\e2759add.acr Page 3 GeoSoils, Inc. Laboratory test results reported TRPH concentrations at less than 0.5 milligrams/liter (mg/l). TPH-gas and TPH-diesel laboratory test results were reported as less than 0.05 mg/l and 0.5 mg/l, respectively. Concentrations of Benzene, Ethylbenzene, and Toluene were reported by the laboratory as less than 0.3 micrograms per liter (/ug/l). Concentrations of Xylenes (Total) were reported by the laboratory as less than 0.6 ^g/l. Laboratory test results are provided in Appendix C. A summary of test results are provided in Table 1 below. TABLE 1 SUMMARY OF CHEMICAL TEST RESULTS SAMPLE LOCATION B-1 EPA TEST METHOD 8080 fcg/L) <DL'1> TRPH (mg/l) <0.5 TPH-gas <0.05 TPH- diesel <0.5 BTEX <0.3&0.6<2) <DL(1) - Less Than Laboratory Detection Limits 0.6 (2> - Test Result for Xylenes (Total) Conclusions and Recommendations Based upon the absence of detectable concentrations of petroleum hydrocarbons, Chlorinated Pesticides, and PCB's in the "perched" groundwater encountered in the boring recently drilled on the Carnation property, it appears that agricultural operations on the property have not adversely affected "perched" groundwater. Beneficial use groundwater, located at a depth of greater than 51 feet below the surface of the subject site, is also unlikely adversely affected. It is our opinion, therefore, that the initial survey report recommendations remain applicable. Where applicable, GSI has used existing regulatory data as a screening tool for the detected concentrations of pesticides and other contaminants within the property. Specifically, GSI utilized Preliminary Remedial Goals (PRGs), which combine existing USEPA and CALEPA (where available) toxicity values with generally accepted exposure factors to estimate concentrations in residential-use soil that do not represent a cancer risk to humans greater than one-in-one million (i.e., 1 x 10~6). All surficial soils with concentrations of DDT^a,) and Toxaphene greater than the Preliminary Remedial Goal criteria should not be placed within five (5) feet of asphalt grade within streets on the subject site. Burial within open spaces or within building areas is not acceptable to the Department of Environmental Health (DEH). Based upon residue concentrations detected by laboratory testing, GSI recommends that the upper one (1) foot of soils from within two (2), one-acre grids (i.e., two acres) onsite will Ryland Homes Carnation Property, Carlsbad File:e:\wp7\env\e2700\e2759add.acr W.O. E2759-SC October 18,1999 Page 4 GeoSoils, Inc. require remediation. Specifically, remedial earthwork is required in the area covering all or a portion of Lots 14 through 23. Remedial earthwork should consist of the excavation and stockpiling of the upper one (1) foot of earth materials within each of the two (2), one- acre grids. Subsequently, the stockpiled soils would be buried in over-excavated areas within the onsite streets. The estimated quantity of soils requiring remediation is on the order of 3,225 cubic yards (yds3). Removals and burial should be monitored by a representative of this office. Sampling should be conducted in at least two (2) locations within each of the two (2) one-acre grids (i.e., 4 total samples) after removal of the affected earth materials onsite to evaluate that all affected earth materials have been removed and buried. If concentrations of restricted pesticides are detected above the PRG criteria in samples collected at a depth of 1/2 foot in the excavation, additional removal would occur until residue concentrations of earth materials are below PRG criteria. It is our understanding that if a "Closure Letter" is needed, a final report of the excavation, removal, and burial of the affected soils onsite will be required by the DEH for review. The final report would include a sample and burial location map (81/2 x 11-inch size) and laboratory test results. Data submitted herein is consistent with conclusions and recommendations provided in the initial report. Based upon the information collected by GSI during this survey, further studies or action, other than the recommendations provided in the initial survey reports (dated October 11,1999), are not proposed from an environmental viewpoint, at this time. LIMITATIONS GSI has performed the services for this project in accordance with the terms of a contract between GSI and Client and in accordance with current professional standards for investigations of this type. The conclusions presented in this report are based on the information collected during the study, the present understanding of the site conditions, and professional judgment. Please note, subsurface conditions may vary throughout the property from those encountered in subsurface excavations, and/or information provided in historical documents reviewed by GSI. The interpretations and recommendations of GSI are based solely on such information, and/or information supplied by Client. Findings of this assessment based on data provided by others carries no warranty, expressed or implied, as a result of the usage of such data. It is possible that future assessments may reveal additional data or variations of the current data which may require the current conclusions and recommendations to be re-evaluated. As a result, GSI makes no warranty, either express or implied, as to its findings, opinions, Ryland Homes W.O. E2759-SC Carnation Property, Carlsbad October 18,1999 File:e:\wp7\en\Ae2700\e2759add.acr Page 5 GeoSotts, Inc. recommendations, specifications, or professional advice except that they were promulgated after being prepared in accordance with generally accepted standards of care and diligence normally practiced by recognized consulting firms performing services of a similar nature. The information in this report is relevant to the date of the site work and should not be relied on to represent conditions at any later date. Facts, conditions, and acceptable risk factors change with time, accordingly, this report should be viewed within this context. If you have any questions pertaining to this addendum or we may be of further service, please do not hesitate to contact this office. We appreciate the opportunity to be of service to you. Respectfully submitted, GeoSoils, Inc. ,? Edward P. Lump Director of Environmental Service REA-1 2565, RG 5975, CEG 1924 EPL/DG/mo ivy,.-';Distribution: (3) Addressee (1) Department of Environmental Health, Attention: Mr. Nasser Sionit, Ph.D. Enclosures: Appendix A - Boring Permit Application and Permit Appendix B - Log of Boring B-1 Appendix C - Laboratory Test Results Ryland Homes Carnation Property, Carlsbad Rle:e:\wp7\env\e2700\e2759add.acr W.O. E2759-SC October 18,1999 Page6 GeoSoils, Inc. E E E E i C I E 1 I i 1 APPENDIX A BORING PERMIT I APPLICATION AND PERMIT PERMITS W98519 A.P.N. #215-070-08 EST#H38425 COUNTY OF SAN DIEGO DEPARTMENT OF ENVIRONMENTAL HEALTH LAND AND WATER QUALITY DIVISION MONITORING WELL AND BORING CONSTRUCTION AND DESTRUCTION PERMIT SITE NAME: Carnation Property ; ::: SITE ADDRESS: Black Rail Road, Carlsbad, CA 92009 : -;,. PERMIT FOR: One: hydropunch boring r -;:; PERMIT APPROVAL: October 8, 1999 % PERMIT EXpRES ON: February 8, 20QO % PERMITjpWDITIONS:[~~~ : " -• '' ' % 1. Al^borings must be destroyed in accordance with Department of Water Resources Bulletin 74-81 and 2. 3. 4. 5. All wash watermust be:contained and disposed of :|ubmit complete laboratory data for both soil and groundwater with the well logs. 1 i|ubmit all the information specified in the SAM Manual in: .. iiiii 1 : : Section 6, Page B-8,C., 2. f All water and soil that is placed in drums must be labeled and stored as specified in the SA:M Manual Section 1, Page 12,;;(5). .f 6. This office must be given 48 hour notice of any drilling activity on this site. Please contact Marisue Crystal at (6^9) 338-2339. ,:i;=F' 7. This office must be given advanced notification of drilling cancellation. Please contact Marisue Crystal at (619) 338-2339. ,,;::; ; NOTE: This permit does not constitute approval of a workplan as defined in Section 2722 of Article 11 of C.C.R., Title 23. Workplans are required for all unauthorized release investigations in San Diego County. APPROVED BY: Notified: DATE: W08/1999 YD PERMIT APPLICATION GROUNDWATER AND VADOSE MONITORING WELLS AND EXPLORATORY OR TEST BORINGS OFK1CE I SE ONLY s \\' SAN! CASdjiV _ DATE RECEIVED: /° • F- 5T FEE PAID A. RESPONSIBLE PARTY - Spectrum Communities Mailine Address 15375 Barranca Pkvy. St. B-211 Contact Person Mr. Don Clannan PI Phone ( Cirv Irvine State ,nn* (040.) 7S1-R400 ext 949) 753-8400 CA Zio 926 18 R ^TTFA^^^MTrXTPRnTFrTIirAPPIirATlITiiH C. CONSULTING FIRM GeoSoils, Inc. Mailing Address 5741 Palmer Way Recistered Professional Edward P. Lump r«y Carlsbad State CA RM»«ration«! 5975 1 ZJD92008 fRG) RCE, CEG) ContactPerson Edward P. Lump Phone(760) 438-3155 ext D. DRILLING COMPANY West Hazmat Drilling Mailinc Address 3 620 Kurtz Street Corp C57S 554979 Phone(619)686-5800 r\ty San Dieao State CA Zip 92110 „. E. CONSTRUCTION INFORMATION TYPE OF WELLS/ BORINGS TO BE CONSTRUCTED Urr PI Groundwater PI Vadose SkBorine 1 f~l Other NUMBER OF WELLS TO BE DESTROYED # NiA. MATERHLS TO BE USED CASING SEAL Type N'A- fl Neat Cement Gau?e PI Cement & Bentonite Diameter [D Sand-Cement Well Screen Size | | Bentonite Filter Pack Q Other (Specify) Drilling Method 0 Auger l~1 Air Rotor O Mud Rotary O Percussion Q Other PROPOSED CONSTRUCTION•• Estimated i?round water depth > 100 ft. CEMENT SEAL to BENTONITESEAL to FILTER PACK to PERFORATION to PROPOSED DRILLFNG DATE 1 0 - 1 1 - 9 9 NOTE: For wells with multiple completion attach a well construction diagram 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 pertaining to well/boring construction and destruction. -^-^~^ /^^DRILLER'S SIGNATURE DATE Within 30 days of completion, I will furnish the Monitorwg Well Plan Check desk with a complete and accurate well/boring log. I will certify t^desiga^nd consffuctiorv'oF-^estruction of the well/borings in accordance with the permit application. ^^S>=^-^>\^^ ^f7 10-8-99 >,G'TlCE/CEG^GNAiKJJRE DATE DEH:SAM-9060 (Rev. 10/98)Page 1 of 5 County of San Diego Department of Environmental Health „, F. SITE INFORMATION 1. ASSESSOR'S PARCEL NUMBER 215-070-08 Site Name Carnation Property Site Address Black Rail Road Chy Carlsbad Zip 92009 PROPERTY OWNER Spectrum Communities Mailing Addresses75 Barranca Pkwy, St. B-211 City Irvine Phone (949)753-8400 State CA Zip 92618 NUMBER OF WELLS TYPE OF WELLS Boring/Hydropunch 2. ASSESSOR'S PARCEL NUMBER. Site Name Site Address City.Zip. PROPERTY OWNER. Mailing Address City. Phone . State.Zip. NUMBER OF WELLS TYPE OF WELLS. 3. ASSESSOR'S PARCEL NUMBER. Site Name Site Address City.Zip. PROPERTY OWNER. Mailing Address Chy. Phone State Zip. NUMBER OF WELLS TYPE OF WELLS 4. ASSESSOR'S PARCEL NUMBER. Site Name Site Address Chy.Zip. PROPERTY OWNER. Mailing Address City. Phone .State.Zip. NUMBER OF WELLS TYPE OF WELLS. G. FEES: FEE CODE 1 Groundwater MWs Vapor Extraction MWs VaHnc*» Wollcv auubc wells 2 Boring/Hydropunch Geoprobes, etc. 3 Destruction BASE FEE INCLUDES FIRST BORINGAVELL SI 50.00 SI 50.00 S150.00 FEE FOR ADDITIONAL xS150 = xS90 = x$140 = DEH:SAM-9060 (Rev. 10/98)Page 2 of 5 County of San Diego Deportment of Environmental Health H. APPLICATION SUBMITTAL, PLAN APPROVAL, PERMIT ISSUANCE, AND REQUIRED INSPECTIONS Submit one (1) original and two (2) copies of this application package, including plan drawings with the required fet to the Department of Environmental Health, Site Assessment and Mitigation Program (SAM). 1255 Imperial Avenue 3rd Floor, San Diego, CA 92101. Or mail to P.O. Box 129261, San Diego, CA 92112-9261. Checks should bf made payable to the County of San Diego. A permit will be issued by SAM upon review and approval of the application and plans. The required fees must be submitted with the application package. Information in addition to that presented in the application package may be needed in order to obtain final approval. No work is to begin on the proposed project until a permit has been issued. The required inspections cannot be scheduled until a permit is issued Once the permit has been issued, it is the responsibility of the permittee to notify SAM at least two (2) working days in advance to schedule each required inspection. USE ONE APPLICATION PACKAGE FOR A SINGLE SITE PROJECT. A SINGLE PERMIT WILL BE ISSUED FOR A SINGLE SITE PROJECT, EVEN IF WELLS/BORINGS ARE COMPLETED ON MORE THAN ONE PROPERTY. FOR MULTIPLE SITE PROJECT'S, USE SEPARATE APPLICATIONS. County of San Diego DEH:SAM-9060 (Rev. 10/98) Page 3 of 5 Department of Environmental Health PERMIT APPLICATION FOR GROUND WATER AND VADOSE MONITORING WELLS EXPLORATORY OR TEST BORINGS S For well destruction, complete only £ 1 below. S 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 California. $ Well driller must have an active C-57 License and current S2,500 bond with the County. $ Provide a plot plan giving location of property lines, existing improvements such as structures, underground tanks, underground utilities, underground 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.N.A. 2. What is the proposed purpose of the well/boring? To evaluate if beneficial use groundwater is located within 50 feet of the ground surface. If encountered, water sample would be collected and tested for pesticide contamination. 3. What procedures will be used to prevent the well/boring from providing an avenue to contamination during construction? Drill boring/hydropunch in area of property of no known contamination. Backfill with bentonitic slurry. •" 4. What field procedures will be utilized to determine if contamination exists? N.A. 5. What procedures will be used to determine whether samples will be sent for laboratory testing or archiving? If groundwater is encountered within 50 feet of surface, sample would be collected with hydropunch, and sent to lab for chemical testing. County of San Diego DEH:S AM-9060 (Rev. 10/98) Page 4 of 5 Department of Environmental Health 6. What constituents will be monitored and tested (Include EPA Laboratory Test Methods to be used)? EPA 8080, TPH, TRPH 7. How will samples be transported and preserved? Placed in cooler and transported to lab by geologist. 8. What sampling methods will be used? Hydropunch 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? Steam clean drilling equipment 11. What methods will be used to clean sampling equipment? steam clean sampling equipment 12. What cleaning method will be used to clean casing and screen prior to installation? N.A. County of San Diego DEH:SAM-9060 (Rev. 10/98) Page 5 of 5 Department of Environmental Health u>g0 LARRY T. AKER DANIEL J. AVERA , A5S.STANT DIRECTOR °IHECTOR DEPARTMENT OF ENVIRONMENTAL HEALTH P.O. BOX 3S2S1. SAN 13633. CA 92186-S2S1 (619) 338-2222 FAX (613) 338-277 SITE ASSESSMENT AND MITIGATION DIVISION PROPERTY OWNER RESPONSIBILITY FOR MONITORING WELLS US'- 070'Proposed Location of Monitoring Wcll(s): • Pmpgrty Owner \ WffCTJttnr* fcAtfk,,^ , T/r\ ; Dear Property Owner A proposal has been made to install one or more monitoring wells on your property. Monitoring wells are typically installed to gather data for environmental investigations. This letter is to inform you of your responsibilities for monitoring wells installed on your property. Whether or not you obtain the permit or are responsible for installing the monitoring wells you may be held responsible for the maintenance and destruction of the wells on your property. Section 67.431 of San Diego County Code states that -Whenever the Director of DEH determines that an abandoned or other well is causing a nuisance by polluting or contaminating ground water, or constitutes a ._ safety hazard, he may issue a written order requiring that the conditions productive of the nuisance be abated within a period of ten days thereafter and shall forthwith serve the order upon the person occupying the premises, if any, and if no person occupies the premises, the order shall be posted upon said premises in a conspicuous place. In addition, a copy shall be mailed to the owners of the premises as their names and addresses appear upon the last equalized assessment role." If you have any questions contact the Monitoring Well Program at (619) 338-2339. I understand my responsibilities as property owner under San Diego County Code concerning monitoring wells installed on my proofat Signature: XflxCAX" . Date: Print Name: Mailing Address: _^ <_ . / ) S I >vfV\/* i/t/fl^S- , ^ "Prevention da ma F^rs: H. APPLICATION SUBMITTAL, PLAN APPROVAL, PERMIT ISSUANCE, AND REQUIRED INSPECTIONS Submit one (1) original and two (2) copies of this application package, including plan drawings with the required fee to the Department of Environmental Health, Site Assessment and Mitigation Division (SAM). 1255 Imperial Avenue, San.Diego, CA 92101. Or mail to P. O. Box 85261, San Diego, CA 92186-5261. Checks should be made payable to the County of San Diego. A permit will be issued by SAM upon review and approval of the application and plans. The required fees must be submitted with the application package. Information in addition to that presented in the application package may be needed in order to obtain final approval. No work is to begin on the proposed project untfl a permit has been issued. The required inspections cannot be scheduled until a permit is* issued. Once the permit has been issued, it is the responsibility of the permittee to notify SAM at least two (2) working days in advance to schedule each required inspection. USE ONE APPLICATION PACKAGE FOR A SINGLE SITE PROJECT. A SINGLE PERMIT WILL BE ISSUED FOR A SINGLE SITE PROJECT, EVEN IF WELLS/BORINGS ARE COMPLETED ON MORE THAN ONE PROPERTY. FOR MULTIPLE SITE PROJECT'S, USE SEPARATE APPLICATIONS. County of' S.m Dicy DI3H:.SAM-')(XiO (Rev. 9/961 p:l»e 3 of 5 Dcpanmeni of Environment:)! Heuli • 4--> .-./•-: 5741 ^c Carlsbad, - J"v-. "KVi i'"- /"•-.': .•'•!'.•£•"' po/1\ .' .•• ORANGE^CQ. \ • ' . SAN DIEGO CO\V£.N W.O. E2759-SC DAYE c E E i . APPENDIX B LOG OF BORING B-1 I C I i i I E' E GeoSoils, Inc. /WX/fCTVRYLAND HOMES Carnation Property +•<<-^ r+• 0. 0)a 5 _ 10- 1 K 20- 25- Sample *. 3 03 Undis-turbedBlous/ft.usesSumbo 1SC CL SC +- 3 +-,-, s\:»~ La •sture (X)oE Saturation CX)BORING LOG W.O. E2759-SC BORING B-1 SWff7 1 OF 2 DA TE EXCA VA TED 10-11-99 SAMPLE METHOD: M ^ Standard Penetration Test ^ Water Seepage into holeUndisturbed, Ring Sample Description of Material I i I I TERRACE DEPOSITS @ 0-5'+/-, SILTY CLAYEY SAND, orange brown, slightly moist, medium dense; moderately difficult drilling. @ 5-15' + /-, SANDY CLAY, orange brown, slightly moist, medium dense to dense; moderately difficult drilling. @ 15-30' + /-, SILTY CLAYEY SAND, orange brown, slightly moist to moist, medium dense to dense; moderately difficult drilling. n GeoSoils, Inc. _,..__ B1Carnation Property PLATE B-1 GeoSoils, Inc. PROJECT: RYLAND HOMES Carnation Property /^ •t-i- v^ JC•(- 0. 0)a 35- 10^ 45- 50- 55- Sample y 3 CD Undis-turbedB I ous/ft.usesSymbo ISC CL +- 3 H 3~ La /^ Xw a L 3 +•in oE Saturation (.'/.)BORING LOG W.O. E2759-SC BORING B-1 SHEET 2 OF 2 DATE EXCAVATED 10-11-99 SAMPLE METHOD: 1 '% Standard Penetration Test £y Water Seepage into hole Undisturbed, Ring Sample Description of Material f f •// '^ I @ 30-40' + /-, SILTY CLAYEY SAND, orange brown, moist, medium dense to dense. SANTIAGO FORMATION @ 40-50' + /-, SANDY CLAYSTONE/CLAYEY SANDSTONE, light gray, moist, medium dense. Total Depth = 51' Seepage at 40' Backfilled with bentonite slurry to 51' D GeoSoils, Inc. _. .__ R,Carnation Property PLATE B-2 E G 1 I C C I E C C C E E E C APPENDIX C LABORATORY TEST RESULTS D-TEK Analytical Laboratories, Inc. 9020 Kenamar Drive, Suite 205 San Diego, CA 92121 (858) 566-4540 FAX (858) 566-4542 GEOSOILS 5741 Palmer Way Carlsbad, CA 92008 Attn: Mr. Ed Lump Date of Report: 10/15/99 Sampling Date: 10/11/99 Date Sample Received: 10/11/99 Date Extracted: 10/14/99 Date Analyzed: October 14,1999 Analyzed By: EA and ASL Sample Type: Ground Water Project Name: E2759X-SC Log Number: 99-3013 The sample(s) were analyzed with EPA methodology or equivalent methods as specified on the attached "Analyses Results" report. The symbol for "less than" indicates a value below the reportable detection limit. The results of these analyses and the quality control data are enclosed. Ellen Atienza ' Operations Manager D-TEK Analytical Laboratories, Inc. 9020 Kenamar Drive, Suite 205 San Diego, CA 92121 (858) 566-4540 FAX (858) 566-4542 GEOSOILS 5741 Palmer Way Carlsbad, CA 92008 Attn: Mr. Ed Lump Date of Report: 10/15/99 Sampling Date: 10/11/99 Date Sample Received: 10/11/99 Analyzed By: EA Sample Type: Ground Water Method: EPA 3510/3620/8080 Unit: (J,g/L Date Extracted: 10/14/99 Date Analyzed: 10/14/99 Detection Log Number: 99-3013 ANALYSIS Limit Sample ID; B-l @ 46* + 4,4'-ODD 0.1 <DL 4,4' - DDE 0.09 <DL 4,4' - DDT 0.07 <DL Aldrin 0.04 <DL Alpha- BHC 0.12 <DL Beta-BHC 0.11 <DL Gamma-BHC 0.06 <DL Delta-BHC 0.11 <DL Dieldrin 0.05 <DL Endosulfan I 0.06 <DL Endosulfan II 0.09 <DL Endosulfan Sulfate 0.07 <DL Endrin 0.08 <DL Endrin Aldehyde 0.09 <DL Endrin Ketone 0.09 <DL Heptachlor 0.03 <DL Heptachlor Epoxide 0.05 <DL Methoxychlor 10 <DL Toxaphene 10 <DL Chlordane 5 <DL PCB-1016 0.65 <DL PCB -1221 0.65 <DL PCB -1232 0.65 <DL PCB -1242 0.65 <DL PCB -1248 0.65 <DL PCB -1254 0.65 <DL PCB -1260 0.65 <DL Ellen Atienza Operations Manager D-TEK Analytical Laboratories, Inc. 9020 Kenamar Drive, Suite 205 San Diego, CA 92121 (858) 566-4540 FAX (858) 566-4542 Date: Attn: Log#: Date Extracted: Date Analyzed: Extraction Method: Analysis Method: METHOD BLANK QUALITY CONTROL DATA REPORT 10/15/99 Mr. Ed Lump 99-3013 10/14/99 October 14,1999 EPA 3510 / 3620 EPA 8080 No target analytes were detected in the method blank. LABORATORY CONTROL STANDARD Compound G-BHC(Lindane) Heptachlor Aldrin Dieldrin Endrin 4,4' DDT Log# % Recovery QC Limits % * 92 90 90 92 84 104 32-127 34-111 42-122 36-146 30-147 25-160 SURROGATE RECOVERIES (Tetrachloro-M-Xylene) Percent Recovery: Method Blank 128% 99-3013 100% LCS 104% QC Limits: 43 to 169% Ellen Atienza ' Operations Manager QUALITY CONTROL TERMINOLOGY LCS - LABORATORY CONTROL SAMPLE. Reported as % recovery of an independent standard carried through all sample preparation procedures to verify method performance. Acceptable range is based on historical laboratory control data and EPA requirements. Any out-of-control QC data is clearly indicated. Spike- environmental sample is matrix spiked with method compounds and % recovery of concentration spiked into sample is calculated. Reported as % recovery. Acceptable range for "Normal Matrix Sample" is based on historical laboratory control data. Any out-of-control QC data is clearly indicated. Surrogates- Compounds representative of a group of compounds. Surrogates are spiked into environmental samples and % recovery of concentration spiked is calculated and reported. Acceptable range varies depending on sample matrix and analysis method. Any out-of-control QC data is clearly indicated. Pagel D-TEK Analytical Laboratories, Inc. 9020 Kenamar Drive, Suite 205 San Diego, CA 92121 (858) 566-4540 FAX (858) 566-4542 GEOSOILS 5741 Palmer Way Carlsbad, CA 92008 Attn: Mr. Ed Lump Date of Report: Sampling Date: Date Sample Received: Date Analyzed: Analyzed By: Sample Type: Project Name: Log Number: 10/15/99 10/11/99 10/11/99 October 14,1999 EA and ASL Ground Water E2759X-SC 99-3013 ANALYSES RESULTS Analysis Prep/Analysis Method Units Log Number: 99-3013 Sample ID; B-l @ 46* + TRPH TPH-G TPH-D Benzene Ethylbenzene Toluene Xylenes (Total) EPA 418.1 M8015 M8015 M8020 M8020 M8020 M8020 mg/1 mg/1 mg/1 ug/1 ug/1 ug/1 ug/1 <0.5 * <0.05 ** <0.5 <0.3 <0.3 <0.3 <0.6 Ellen Atienza Operations Manager TPH-G - Total Petroleum Hydrocarbons - Gasoline * Total Petroleum Hydrocarbon analysis resulting in hydrocarbons of the range C4-C12. Sample quantitated against gasoline. TPH-D - Total Petroleum Hydrocarbons - Diesel * * Total Petroleum Hydrocarbon analysis resulting in hydrocarbons of the range C10-C44. Sample quantitated against diesel. DHS - Recommended Procedure From Leaking Underground Fuel Tank Field Manual, May 1988 TRPH - Total Recoverable Petroleum Hydrocarbons D-TEK Analytical Laboratories, Inc. 9020 Kenamar Drive, Suite 205 San Diego, CA 92121 (858) 566-4540 FAX (858) 566-4542 Date: Attn: Log#: Date Analyzed: QUALITY CONTROL DATA REPORT 10/15/99 Mr. Ed Lump 99-3013 October 14,1999 Analysis Prep/Analysis Method LCS % Recovery TRPH TPH-D EPA 418.1 M8015 115 92 Ellen Atienza Operations Manager QUALITY CONTROL TERMINOLOGY LCS - Laboratory Control Sample. Reported as % Recovery of an Independent Standard carried through all sample preparation procedures to verify method performance. Acceptable range Is 80 % -120 % recovery. Spike-Environmental sample is matrix spiked with method compounds and % recovery of concentration spiked into sample is calculated. Reported as % Recovery. Acceptable range for "Normal Matrix Sample" is 75 % - 125% recovery. % Recovery = (Spike Sample Result - Sample Result) *100/Spike Concentration. RPD (Relative % Difference) = (Spiked Sample - Spike Duplicate) * 100 / Average Result. D-TEK Analytical Laboratories, Inc. 9020 Kenamar Drive, Suite 205 San Diego, CA 92121 (858) 566-4540 FAX (858) 566-4542 QUALITY CONTROL DATA REPORT Date: Attn: Log#: Date Analyzed: 10/15/99 Mr. Ed Lump 99-3013 October 14,1999 ANALYSES RESULTS Analysis Prep/Analysis Method Benzene M8020 Toluene M8020 Surrogate Recoveries Spike % Recovery 102 119 Spike Dup % Recovery 101 114 RPD 1 4.3 Compound 99-3013 Bromofluorobenzene 113 % Ellen Atienza Operations Manager QUALITY CONTROL TERMINOLOGY LCS - Laboratory Control Sample. Reported as % Recovery of an Independent Standard carried through all sample preparation procedures to verify method performance. Acceptable range Is 80 % -120 % recovery. Spike-Environmental sample is matrix spiked with method compounds and % recovery of concentration spiked into sample is calculated. Reported as % Recovery. Acceptable range for "Normal Matrix Sample" is 75 % - 125% recovery. % Recovery = (Spike Sample Result - Sample Result) *100/Spike Concentration. RPD (Relative % Difference) = (Spiked Sample - Spike Duplicate) * 100 / Average Result. - 2 . >-Q- o- I-- (0 O LL O Z < o oc (A0) 2 = ll OP O cyO f-Of coo o o o z _ Z IU OT 3 J A o 1 o **? f lA £ IU i ^j- Y 6 ft O - *<J 3, C 1? 1 LU a. ;<w PECIi A7 ^ I QCO %<£ £8! 8 COi e ICO Uli COs I n D-TEK POLICIES Fee Schedule Criteria / Discounts: Fees are established from our fixed list prices, with the exception of non-routine analyses requiring supplemental research, method development, extensive QA/QC reporting data, not-routine detection limits, or additional materials. Fixed prices are applied to routine analyses and reporting formats. The prices for non-routine analyses are assessed on a "time and materials" basis. Expedited turnaround times for sample analyses may be arranged with advanced notice. Surcharges are applied to the prices of analyses requiring expedited turnaround times. Discounts are extended for projects involving large numbers of samples, or on a contractual arrangement. Please call our office for price quotations. Turnaround Time: Standard turnaround time is five to seven (5-7) working days for verbal results, with a written report following within three (3) working days. Expedited turnaround times may be arranged with advanced notice and are subject to a surcharge. Samples received after 5:00 PM on regular working days are considered as being received at 8:00 AM on the next working day and turnaround time begins at that point. Surcharges: Standard turnaround time (TAT) is five to seven (5-7) working days. On expedited turnaround times the following surcharge factors apply: Three (3) day TAT (X) 1.2. Two (2) day TAT (X) 1.5, One (I) day TAT (X) 2.0 and Same Day TAT (X) 2.5. Holding Times: Holding times are carefully monitored at D-TEK since this is a vital part of Quality Control procedures. D-TEK will make every effort to perform analyses within the applicable holding limes established by the Environmental Protection Agency (EPA) or equivalent methodology. We reserve the right to apply a surcharge to prices if the sample holding time dictates sample processing within a specified time that would otherwise not be performed within our standard turnaround time. Payment; Payment for pre-approved accounts is net 30 days from the date of invoice. On all analyses that are done on other than pre-approved accounts, payment must accompany the sample at the time of the sample delivery unless credit is approved by D-TEK. Cash, checks, money order or Visa / MasterCard are acceptable forms of payment. D-TEK has a forty dollar ($40) minimum laboratory/data generation fee per visit. Without pre-approved credit, no analyses will begin until payment is received in full. Sample Archiving: After thirty (30) calendar days, samples will be disposed of or returned to customer. D-TEK will not be held responsible for reanalysis of samples after this time. Samples stored after 30 calendar days are subject to an archiving fee of $5.00 per sample per month. Samples received with instruction's to only "hold" or '"store" are subject to an archiving fee commencing on the date of receipt. However, if analytical work is performed within the thirty (30) days, the archiving fee is suspended until another thirty (30) days have passed. Hazardous Samples: Hazardous samples will be returned to the client. Samples that D-TEK deems as "hazardous" or difficult to dispose of are subject to a disposal fee per sample. Reporting Results: Analyses are reported in wet weight values. Dry weight values may be obtained when percent total solids is performed at an additional cost. Overtime Services: Time-and-a-half charges will apply for hours worked 5:00 PM to 12:00 AM Monday through Friday and 8:00 AM through 5:00 PM on Saturday and 8:00 AM to 5:00 PM on Sunday. Triple time will be charged for hours from 12:00 AM to 8:00 AM on Saturday and 5:00 PM to 12:00 AM on Sunday. Sample Collection: D-TEK does not accept any liability with regard to the collection, preservation technique, or transportation method of samples by clients. Policies, 2/8/99