The URL can be used to link to this page

Home My WebLink AboutCDP 97-58A; Carlsbad Park Estates; Coastal Development Permit (CDP) (10)CHRISTIAN WHEELER ENGINEERING November 30,1999 Carlsbad Estates LLC 110 Juniper Street San Diego, California 92101 ATIN Herb Palmtag CWE 198.100.8 SUBJECT Report of Environmental Monitoring, Proposed 14-Lot Subdivision, Tract 97-24, Park Drive, Carlsbad, California REFERENCES: 1) Results of Limited Phase I1 Environmental Study, Pesticide/Fertilizer Residue Sampling, Palmtag Carlsbad 14,3926 Park Drive, Carlsbad, California by Southern California Soil & Testing, Inc., Project No. 9811181, Report No. 1, dated July 15,1998 2) Report of Grachg Observations and Testing, May Subdivision, Carlsbad Tract 97- 24, Park Drive at Monroe Street, Carlsbad California by Christian Wheeler Engineering, Report No. 198.100.4, dated August 20, 1999 Dear Ladies and Gentlemen: In accordance with your request, we have prepared this letter regarding environmental monitoring at the subject site. The subject site had been previously used in the growing of small plants in greenhouses. The City of Carlsbad had requested that some testing be performed prior to grading to assess the presence of pesticide residues and to monitor the site during grading operations in order to further evaluate the potential for significant amounts of soil contaminated with pesticides or fertilizers. The results of the tests performed prior to grading were presented in the referenced Limited Phase I1 Environmental Study report. The site was monitored continuously by a member of our technical staff and periodically by a member of our geologg/mvironmental staff as gradmg proceeded. The grading was performed in accordance with the requirements of the project geotechnid report No areas identified as containing significant amounts of soil contaminated with pesticides or fertilizers were observed during gradmg operations. Representative samples of the soils exposed at finish grade have been obtained; one sample was obtained from each quadrant. The samples were submitted to an approved environmental testing laboratory under chain-of-custody procedures for analysis for pesticide residue. Preliminary remediation goals (PRGs) for residential soil established by the United States Environmental Protection Agency for toxaphene, dieldrin, DDT/DDE, and DDD are 0.4 mg/kg, 0.O28mg/kgy 1.7 mg/kg, and 2.4 mg/kg, respectively. A summary of the PRGs, and the laboratory test results are presented below; complete copies of the test results are presented at the rear of this report. 4925 Mercury Street + San Diego, CA 92111 + 858-496-9760 + FAX 858-496-9758 . CWE 198.100.8 PRG , @P4 @Pb) Sample Location NE (#2) sw (#3) SW (#3) DUP SE (#4) November 30,1999 2 DDD 2.4 2400 DDD @Pb) ND ND ND ND ND DDE DDT 1.7 1.7 1700 1700 32 43 3 ND 54 7 51 6 3 5 ToxaDhene 0.4 400 T- @Pb) ND ND ND ND ND Dieldrin 0.028 28 Dieldrin @Pb) 25 2 ND ND ND Based on the laboratory test results, it is our opinion that after site preparation procedures associated with the mass grading operations, the amount of pesticide residues remaining in the near-surface soils is sufficiently low so that "no significant risk" to the health and safety of workers and residents is preserit. The "no significant risk" level assumes that that the occurrence of one excess lifetime cancer in a population of one million is "not significant". If you have any questions after reviewing this letter, please do not hesitate to contact this office. Respectfully submitted, CHRISTIAN WHEELER ENGINEERING Curtis R Burdett, C.E.G. #lo90 CRB:crb cc: (4) Submitted Pac$c Treatment 4340 Viewridge Avenue, Suite A San Diego, CA 92123 (858) 560-7717 Fax (858) 560-7763 Analytical Chemistry Laboratory Analytical Services, Inc. October 19, 1999 Christian Wheeler Engineering Attn.: Curtis Burdett 4925 Mercury St. San Diego, CA 921 11 Project Namemo.: Carlsbad Tract 97-24 Laboratory Log No.: 1959-99 Date Received: 10/13/99 Sample Matrix: Four soil samples PO NO.: 198-100 Please find the following enclosures for the above referenced project identified: 1) AnalyticalReport 2) QNQCReport 3) Chain of Custody Form ....................................................... Cerrificate of Analysis ...................................................... Samples were analyzed pursuant to client request utilizing EPA or other ELAP approved methodologies. Date of extraction, date of analysis, detection limits and dilution factor are reported for each compound analyzed. All samples were analyzed within the method required holding time fi-om sample collection. Data for each analytical method was evaluated by assessing the following QNQC functions, as applicable to the methodology: Quality Control Standard Surrogate Percent Recovery Laboratory Control Sample (LCS) percent recoveries for all analyses Mctrix Spike Recovery,Matrix Spike Duplicate Recovery (MSR & MSDR) and/or Relative Percent Difference (RPD from MSR & MSDR) I certifi that this data report is in compliance both technically and for completeness. Release of the data contained in this hardcopy data report has been authorized by the following signature. n ice PresidentLaboratory Director Water Soil Waste Wastewater Marine Sediment & Tissues Elutriate Analyses That Produce Results! ANALYSIS RESULTS - EPA 8081 ORGANOCHLORINE! PESTICIDES CLIENT: CHRISTIAN WHEELER ENGINEERING DATE SAMPLED: NIA DATE RECEIVED: NIA PROJECT NAMEMo.: CARLSBAD TRACT 97-24 DATE EXTRACTED: 10/14/99 PTAS LOG #: METHOD BLANK DATE ANALYZED: 10/15/99 SAMPLE ID: NIA MATRIX: SOLID DILUTION FACTOR: 1 SAMPLE V0L.M.: 30 G ANALYTE ALDRIN ALPHA-BHC BETA-BHC GAMMA-BHC (LINDANE) DELTA-BHC CHLORDANE 4,4-DDD 4,4-DDE 4,4 -DDT DIELDRIN ENDOSULFAN I ENDOSULFAN I1 ENDOSULFAN/SULFATE ENDRIN ENDRIN ALDEHYDE HEPTACHLOR HEPTACHLOR EPOXIDE METHOXYCHLOR TOXAPHENE REPORTING LIMITS PPB (UGKG) 2 2 2 2 2 20 2 2 2 2 2 2 2 2 2 2 2 20 25 ND = ANALYTE NOT DETECTED AT OR ABOVE THE INDICATED REPORTING LIMIT REPORTING LIMITS AND RESULTS HAVE BEEN ADJUSTED ACCORDINGLY TO ACCOUNT FOR DILUTION FACTOR. SURROGATE PARAMETER TCMX ACCEPTANCE CRITERIA 26-146 RESULTS PPB (UGKG) ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Yo RECOVERY 80 PTAS DCN 300-078 (Rev 4/99) Pacific Treatment Analytical services, lnc. mo Viewridge Ave., suite A San Diego, cA 92123 (858) 560-7717 FAx (858) 560-7763 0 ANALYSIS RESULTS - EPA 8081 ORGANOCHLORINE PESTICIDES CLIENT: CHRISTIAN WHEELER ENGINEERING DATE SAMPLED: 10/13/99 DATE RECEIVED: 10/13/99 PROJECT NAMEMo.: CARLSBAD TRACT 97-24 DATE EXTRACTED: 10/14/99 PTAS LOG #: 1959-99- 1 DATE ANALYZED: 101 15/99 DILUTION FACTOR 1 SAMPLE V0L.m.: 30 G SAMPLE ID: CT97-24 NW (#1) MATRIX: SOIL ANALYTE ALDRIN ALPHA-BHC BETA-BHC GAMMA-BHC (LINDANE) DELTA-BHC CHLORDANE 4,4 - DDD 4,4 - DDE 4,4 - DDT DIELDRIN ENDOSULFAN I ENDOSULFAN I1 ENDOSULFAN/SULFATE ENDRIN ENDRIN ALDEHYDE HEPTACHLOR HEPTACHLOR EPOXIDE METHOXYCHLOR TOXAPHENE REPORTING LIMITS PPB (UGKG) 2 2 2 2 2 20 2 2 2 2 2 2 2 2 2 2 2 20 25 ND = ANALYTE NOT DETECTED AT OR ABOVE THE INDICATED REPORTING LIMIT REPORTING LIMITS AND RESULTS HAVE BEEN ADJUSTED ACCORDINGLY TO ACCOUNT FOR DILUTION FACTOR. SURROGATE PARAMETER TCMX ACCEPTANCE CRITERIA 26-146 RESULTS PPB (UGKG) ND ND ND ND ND ND ND 31.5 43.0 24.9 ND ND ND ND ND ND ND ND ND % RECOVERY 89 PTAS DCN 300-078 (Rev 4/99) p Pacific Treatment Analytical Services, lnc. 4340 Viewridge Ave., Suite A San Diego, CA 92123 (858) 560m7 FAX (858) 560-7763 0 ANALYSIS RESULTS - EPA 8081 ORGANOCHLORINE PESTICIDES CLIENT: CHRISTIAN WHEELER ENGINEERING DATE SAMPLED: 10/13/99 DATE RECEIVED: 10/13/99 PROJECT NAMEMo.: CARLSBAD TRACT 97-24 DATE EXTRACTED: 10/14/99 PTAS LOG #: 1959-99-2 DATE ANALYZED: 10/15/99 DILUTION FACTOR: 1 SAMPLE VOL./WT.: 30 G SAMPLE ID: CT97-24 NE (#2) MATRIX: SOIL ANALYTE ALDRIN ALPHA-BHC BETA-BHC GAMMA-BHC (LINDANE) DELTA-BHC CHLORDANE 4,4 - DDD 4,4 - DDE 4,4-DDT DIELDRIN ENDOSULFAN I ENDOSULFAN I1 ENDOSULFAN/SULFATE ENDRIN ENDRIN ALDEHYDE HEPTACHLOR HEPTACHLOR EPOXIDE METHOXYCHLOR TOXAPHENE REPORTING LIMITS PPB (UGKG) 2 2 2 2 2 20 2 2 2 2 2 2 2 2 2 2 2 20 25 RESULTS PPB (UGKG) ND ND ND ND ND ND ND 3.2 ND 2.4 ND ND ND ND ND ND ND ND ND ND = ANALYTE NOT DETECTED AT OR ABOVE THE INDICATED REPORTING LIMIT REPORTING LIMITS AND RESULTS HAVE BEEN ADJUSTED ACCORDINGLY TO ACCOUNT FOR DILUTION FACTOR. SURROGATE PARAMETER TCMX ACCEPTANCE CRITERIA 26-146 Yo RECOVERY 98 PTAS DCN 300-078 (Rev 4/99) Pacific Treatment Analytical services, /nc. 4340 Viewridge Ave., suite A San Diego, cA 92123 (858) 56o-ni7 FAx (858) 560-7763 0 ANALYSIS RESULTS - EPA 8081 ORGANOCHLORINE PESTICIDES CLIENT CHRISTIAN WHEELER ENGINEERING PROJECT NAMENO.: CARLSBAD TRACT 97-24 PTAS LOG #: 1959-99-3 SAMPLE ID: CT97-24 SW (#3) DILUTION FACTOR: 1 DATE SAMPLED: 1011 3/99 DATE RECEIVED: 10/13/99 DATE EXTRACTED: 10/14/99 DATE ANALYZED: 101 15/99 MATRIX: SOIL SAMPLE VOL./WT.: 30 G ANALYTE ALDRIN ALPHA-BHC BETA-BHC GAMMA-BHC (LINDANE) DELTA-BHC CHLORDANE 4,4 - DDD 4,4 - DDE 4,4 -DDT DIELDRIN ENDOSULFAN I ENDOSULFAN I1 ENDOSULFAN/SULFATE ENDRIN ENDlUN ALDEHYDE HEPTACHLOR HEPTACHLOR EPOXIDE METHOXYCHLOR TOXAPHENE REPORTING LIMITS PPB (UGKG) 2 2 2 2 2 20 2 2 2 2 2 2 2 2 2 2 2 20 25 ND = ANALYTE NOT DETECTED AT OR ABOVE THE INDICATED REPORTING LIMIT REPORTING LIMITS AND RESULTS HAVE BEEN ADJUSTED ACCORDINGLY TO ACCOUNT FOR DILUTION FACTOR. SURROGATE PARAMETER TCMX ACCEPTANCE CRITERIA 26-146 RESULTS PPB (UGKG) ND ND ND ND ND ND ND 53.7 6.7 ND ND ND ND ND ND ND ND ND ND Yo RECOVERY 103 PTAS DCN 300-078 (Rev 4/99) P pacific Treatment Analytical Services, /nc. 434o Viewridge Ave., Suite A San Diego, cA 92123 (858) 560-7717 FAx (858) 56o=na 0 ANALYSIS RESULTS - EPA 8081 ORGANOCHLORINE PESTICIDES CLIENT: CHRISTIAN WHEELER ENGINEERING PROJECT NAMEMo.: CARLSBAD TRACT 97-24 PTAS LOG #: 1959-99-3 (DUPLICATE) SAMPLE ID: CT97-24 SW (#3) (DUPLICATE) DILUTION FACTOR: 1 DATE SAMPLED: 10/13/99 DATE RECEIVED: 10/13/99 DATE EXTRACTED: 10/14/99 DATE ANALYZED: 10/15/99 MATRIX: SOL SAMPLE VOL./WT.: 30 G ANALYTE ALDRIN ALPHA-BHC BETA-BHC GAMMA-BHC (LINDANE) DELTA-BHC CHLORDANE 4,4 - DDD 4,4-DDE 4,4 -DDT DIELDRIN ENDOSULFAN I ENDOSULFAN I1 ENDOSULFAN/SULFATE ENDRIN ENDRIN ALDEHYDE HEPTACHLOR HEPTACHLOR EPOXIDE METHOXYCHLOR TOXAPHENE REPORTING LIMITS PPB (UGKG) 2 2 2 2 2 20 2 2 2 2 2 2 2 2 2 2 2 20 25 RESULTS PPB (UGKG) ND ND ND ND ND ND ND 50.5 6.4 ND ND ND ND ND ND ND ND ND ND ND = ANALYTE NOT DETECTED AT OR ABOVE THE INDICATED REPORTING LIMIT REPORTING LIMITS AND RESULTS HAVE BEEN ADJUSTED ACCORDINGLY TO ACCOUNT FOR DILUTION FACTOR. SURROGATE PARAMETER TCMX ACCEPTANCE CRITERIA 26-146 Yo RECOVERY 92 PTAS DCN 300-078 (Rev 4/99) Pacific Treatment Analytical services, Inc. 434o Viewridge Ave., suite A san Diego, CA 92123 (858) som7 FAX (858) 560-7763 0 ANALYSIS RESULTS - EPA 8081 ORGANOCHLORINE PESTICIDES CLIENT CHRISTIAN WHEELER ENGINEERING DATE SAMPLED: 10/13/99 DATE RECEIVED: 10/13/99 PROJECT NAME/No.: CARLSBAD TRACT 97-24 DATE EXTRACTED: 10/14/99 PTAS LOG #: 1959-99-4 DATE ANALYZED: 10/15/99 DILUTION FACTOR 1 SAMPLE VOL./WT.: 30 G SAMPLE ID: CT97-24 SE (#4) MATRIX: SOL ANALYTE ALDRIN ALPHA-BHC BETA-BHC GAMMA-BHC (LINDANE) DELTA-BHC CHLORDANE 4,4 - DDD 4,4 - DDE 4,4 - DDT DIELDRIN ENDOSULFAN I ENDOSULFAN I1 ENDOSULFAN/SULFATE ENDRIN ENDRIN ALDEHYDE HEPTACHLOR HEPTACHLOR EPOXIDE METHOXYCHLOR TOXAPHENE REPORTING LIMITS PPB (UGKG) RESULTS PPB (UGKG) 2 2 2 2 2 20 2 2 2 2 2 2 2 2 2 2 2 20 25 ND ND ND ND ND ND ND 2.9 5.2 ND ND ND ND ND ND ND ND ND ND ND = ANALYTE NOT DETECTED AT OR ABOVE THE INDICATED REPORTING LIMIT REPORTING LIMITS AND RESULTS HAVE BEEN ADJUSTED ACCORDINGLY TO ACCOUNT FOR DILUTION FACTOR. SURROGATE PARAMETER TCMX ACCEPTANCE CRITERIA 26- 146 Yo RECOVERY 95 PTAS DCN 300-078 (Rev 4/99) a pacific Treatment Analytical services, lnc. 434o Viewridge Ave., suite A san Diego, cA 92123 (858) 560-7717 FAx (858) 560-7763 0 . METHOD: EPA 8081-SOIL DATE ANALYZED: 10/15/99 QAIQC SAMPLE: PTAS 1959-99-2 SPIKED ANALYTE LCS Yo R MS % R MSDYoR RPD GAMMA-BHC 105 99 96 3 HEPTACHLOR 95 86 89 3 QMQC REPORT ACCEPTABLE ACCEPTABLE LCS,MS/MSD RPD CRITERIA CRITERIA YO % 32- 127 <3 0 34-1 11 <3 0 ALDRIN DIELDRIN ENDRIN 4.4-DDT 98 78 80 2 42- 122 <3 0 132 50 66 27 36-146 <3 0 114 95 112 15 30-147 <3 0 118 71 67 6 25-160 <3 0 LCS % R = LABORATORY CONTROL SAMPLE PERCENT RECOVERY MSD % R = MATRIX SPIKE DUPLICATE PERCENT RECOVERY RPD = RELATIVE PERCENT DIFFERENCE MS 'Yo R = MATRIX SPIKE PERCENT RECOVERY PTAS DCN 300-078 (Rev 4/99) 1Q pacific Treatment Analytical services, Inc. 4340 Viewridge Ave., suite A San Diego, CA 92123 (858) mni7 FAX (858) w-m 0 Pacific Treatment Analytical Services, Inc. CHAIN-OF-CUSTODY RECORD 4340 Viewridge Avenue, Suite A San Diego, CA 92123 Phone (619) 560-7717 Fax (619) 560-7763 Client: -. Address. .I I . II ~~ ~ *I Attn: Phone: I , I' 2 Billing Address: I Sampled by: Fax: a ' * & Signature Print I Company: * PTAS reserves the riglit to return samples that do not match our waste profile. "hi& - PTAS Canary - Accounting Pink - TED ANALY BIZ IS Conipan y: Signature Print I I Icompany: I Lent (wReport) Goldenrod - Client (Relinquish Samples)