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Home My WebLink AboutCT 98-17; Hadley Property; Tentative Map (CT) (57)RECEIVED APR 1 3 2000 CfTY OF CARLSBAD PLANNING DEPT. Geotechnical • Geologic • Environmental 5741 Palmer Way • Carlsbad, California 92008 • (760)438-3155 • FAX (760) 931-0915 October 12,1999 W.O. E2758-SC Ryland Homes 15373 Innovation Drive, Suite 300 San Diego, California 92128 Attention: Mr. Jim McMenamin Subject: Addendum To, "Agricultural Chemical Residue Survey, Hadley Property, APN 215-080-19, City of Carlsbad, San Diego County, California 92009," W.O. E2758-SD, by GeoSoils, Inc., dated October 8, 1999. Dear Mr. McMenamin: Pursuant to the request of Mr. Nasser Sionit, Ph.D. (Environmental Health Specialist, Department of Environmental Health) and your verbal authorization, GeoSoils, Inc. (GSI) is providing the following addendum to our agricultural chemical residue survey report on the Hadley property in Carlsbad (establishment No. H38426). The purpose of this addendum was to evaluate the recommended burial depths of agricultural chemical residue-affected soils provided in the subject survey report, relative to depth to groundwater on the subject property. 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. 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. W98518). A copy of the permit application and boring permit is provided in Appendix A. On October 11,1999, a licenced well drilling contractor, West Hazmat Drilling Corporation (C57 No. 554979), drilled a 511/2 foot deep boring (B-1) in the east-central portion of the subject site. Due to the surface of the site being soft and loose from recent discing operations, access to the boring location as presented in the permit application was unattainable. The revised location is provided in Figure 1. The eight-inch diameter boring, drilled with a hollowstem auger, encountered medium dense to dense Terrace Deposits consisting of slightly moist, silty sands and silty clayey sands. 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. Prior to backfilling the boring with a bentonitic slurry, a waiting period occurred to allow any seepage to accumulate. After 1/2 hour, there were no signs of subsurface water in the boring. Conclusions and Recommendations Based upon the absence of groundwater encountered in the deep boring recently drilled on the Hadley property, it is our opinion that the initial survey report recommendations remain applicable. 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 8,1999), 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 reevaluated. As a result, GSI makes no warranty, either express or implied, as to its findings, opinions, 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. Ryland Homes W.O. E2758-SC Hadley Property, Carlsbad October 12,1999 File:e:\wp7\env\e2700\e2758add.acr Page 3 GeoSoilSj Inc. 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 subm GeoSoils, Inc.Reviewed by: Edward P. Lump Director of EnvironmentaTSewcBs REA-1 2565, RG 5795, CEG 1924 EPL/JPF/sl HA ^ / in P. Franklin lanager REA-1 1675, CEG 1340, CHG 532 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 Ryland Homes Hadley Property, Carlsbad File:e:\wp7\env\e2700\e2758add.acr W.O. E2758-SC October 12,1999 Page 4 GeoSoils, Inc. I TING 10" ACP- MAIN ING 8" PVC • MAIN.. !?£ STREET- 1p~~DlP- N ' IV" RECLAIMED- •M/N A - Concrete swale B - Minor wood/metal/glass/plastic trash C - Irrigation lines (reclaimed water) D - Tire and rim E - Undisturbed brush with sandstone rock fragments F - Empty plastic bucket G - Plastic/carpet/metal trash and empty quart oil cans (no staining) H - Dumped small freezer and car door ~j • -— —- I - Phreatophytes J - Dumped glass/tin cans/plastic/cloth trash K - Waste vegetation L - Rubber tire John Deere farm equipment (hydraulic) M - Stockpiled import soil N - Old tomato plants 0 . Stockpiled utility construction materials PPT- Power pole with transformer "in Artificial fitt- Base Map: Tentative Tract Map, Hadley Property, City of Carlsbad, by Hunsaker & Associates, sheet 2 of 2, dated 7-22-98 PROJECT BOUNDARY StockpiledSoils PEN SPACE \PN 215 Palm trees ~>SEDETREET 18- KCft STORM-DRAIN BOUNDARYV,•-:;•/'-4 con REMOVE £Vvrr;/v;7 POWER POLEZ iT:?';TO 3E ALL LOCATIONS ARE APPROXIMATE Proposed Boring '" Graded lots Site recon performed 9-16-98 street - - :GeoSosls, Inc. LOS ANGELES CO. RIVERSIDE CO. ORANGE CO. SAN DIEGO CO. BORING LOCATION Figure 1 W.O. E2758-SC DATE 10/99 SCALE 1"=100' APPENDIX A BORING PERMIT APPLICATION AND PERMIT PERMIT #W98518 A.P.N. #215-080-19 EST # H38426 COUNTY OF SAN DIEGO DEPARTMENT OF ENVIRONMENTAL HEALTH LAND AND WATER QUALITY DIVISION MONITORING WELL AND BORING CONSTRUCTION AND DESTRUCTION PERMIT SITE NAME: Hadley Property :::;:;::;:i:;: . '"'""''"^lii:,, SITE ADDRESS: Black Rail Road, Carlsbad, CA 92009 : : i;;; ; PERMIT FOR: On^iiydropunch boring PERMIT APPROVAL: October 8, 1999 PERMIT EXPIRES ON: February 8, 2000 PERMIT CONDITIONS: 1 . All borings must be destroyed in accordance with Department of Water Resources Bulletin 74-8 1 and 74-90. ;;i;- 2. All wash water must be contained and disposed of properly-^^:^^^;;::;;;;:^;i: 3. Submit complete laboratory data for both soil and groundwater with the well logs. 4. Submit all the information specified in the SAM Manual in: Section 6, Page B-8, C, 2. 5. All water and soil that is placed in drums must be labeled and stored as specified in the SAM Manual in::;; . ' I!; • ; .;i;i' % 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 (619) 338-2339. 7. This office must "be given advanced notification of drilling cancellation. Please contact Marisue Crystal at (619) 338^233?. ;;;:^ NOTE: This permit does not:!(:onstitute:%pproyal;:Qfa':workplan as defined in Section 2722 of Article 11 of C.C.R., Title 23. Wbrkplans are required for all unauthorized release investigations in San Diego County. APPROVED BY: *ar?7 _ D ATE : ^08/1999 Notified: _ \O PERiVQT APPLICATION GROUNDWATER AND VADOSE MONITORING WELLS AND EXPLORATORY OR TEST BORINGS OFFICE USE ONLY PERMITS: W SAM CASBi) DATE RECEIVED:: FEE PAID. A. RESPONSIBLE PARTY Spectrum Communities Mailins Address 15375 Barranca Pkwy, St. B-211 Phone (949) 753-8400 Citv Irvine State CA Contact Person Mr- David Salene Phone (949) 753-8400 ext. Zio 92618 B. SITE ASSESSMENT PROJECT IF APPLICABLE £H C. CONSULTING FIRM GeoSoils, Inc. Mailins Address 5741 Palmer Way Resistered Professional Edward P. Lump Ch%- Carlsbad State CA Registration # 5975 /<RG)RC ContactPerson SAME Phone(760) 438-3155 ext D. DRILLING COMPANY West Hazmat Drilling Mailing Address3620 Kurtz Street Corp C57i= 554979 Phone ( Chy San Dieao State CA Zio 92008 E, CEG) 619)686-5800 Zip 95110 E. CONSTRUCTION INFORMATION TYPE OF WELLS/ BORINGS TO BE CONSTRUCTED LI Groundwater PI Vadose ixl Boring 1 f~l Other NUMBER OF WELLS TO BE DESTROYED # N.A. I agree to comply with the require: the County of San Diego and the S MATERIALS TO BE USED CASING SEAL Type N ' A ' PI Neat Cement Gauge (~~1 Cement & Bentonite Diameter Fl Sand-Cement Well Screen Size nBentem"6 Filter Pack D Other (Specify) Drilling Method fxl Auger (~l Air Rotor D Mud Rotary D Percussion Q Other nents of the current Site Assessment and Mitigation Division N idle of CaJifoiiii^-yeiUlllillu tu we!I/boi ing construction and d& PROPOSED CONSTRUCTION Estimated'ground water depth > TOO ft- CEMENT SEAL to BENTONITE SEAL to FILTER PACK to PERFORATION to PROPOSED DRILLING DATE 10-11-99 NOTE: For wells with multiple completion attach a well construction diagram lanual, and with all ordinances and laws of struction. DRILLER'S' SIGNATURE DATE" Within 30 days of completion, I will furnish the Monftofing Well Plan Check desk with a complete and accurate well/boring log. I will certify the design and construction/'oF-daacuction of the well/borings in accordance with the permit application. £ — i ":~CL^ s ^s\ •*^^- \^^ 10-8-99 ' RGRCE/CEG SlG^fVRE 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 Site Name Hadley Property 215-080-19 Site Address Black Rail Road City Carlsbad Zip 92Q09 PROPERTY OWNER Spectrum Communities Mailing Address 15375 Barranca Parkway, Suite B-21(Eity Irvine .Phone (949) 753-8400 State CA Zip 92618 NUMBER OF WELLS one TYPE OF WELLS Boring/Hvdrommch 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 City. Phone State Zip. NUMBER OF WELLS TYPE OF WELLS 4. ASSESSOR'S PARCEL NUMBER. Site Name ^___ Site Address City.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 Varlncp W*>11cvauose vveiis 2 Boring/Hydropunch Geoprobes. etc. 3 Destruction BASE FEE INCLUDES FIRST BORINGAVELL 5150.00 5150.00 S150.00 FEE FOR ADDITIONAL x$150 = x S90 = xS140 = DEH:SAM-9060 (Rev. 10/98)Page 2 of 5 County of San Diego Department 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 fee 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. 0. Box 129261, San Diego, CA 92112-9261. 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 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 1 PERMIT APPLICATION FOR GROUND WATER AND VADOSE MONITORING WELLS EXPLORATORY OR TEST BORINGS 5 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 52,500 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 Property1 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. . If wells are to be destroyed, provide a description of method of destruction. " 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 fo? 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- vith hvdropunch, and sent Co lab for chemical testing. County of San Diego DEH.SA.M-9060 (Rev. 10/98) Page 4 off 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. 10/9S) Page 5 of 5 Department of Environmental Health (Emmtg 0f OF ENVIRONMENTAL HEALTH ASSISTANT DIRECTOR P.O. SOX352S1.'SANOEGO. CA 92166-5261 (613)338-2222 FAX (BIS) 338-2377 SITE ASSESSMENT A?O) MTTIGATION DIVISION PROPERTY OWNER RESPONSIBILITY FOR MONITORING WELLS Proposed Location of Monitoring Well(s): Property Address: HI *f^-Q(fO- /*? Property Owner 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 67.43 1 of San Diego County Code states that "Whenever the Director of DEH detennines that an abandoned or other -wefl 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 often 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) 333-2339. I understand my responsibilities as property owner under San Diego County Code concerning monicorin* wells installed on m\ " * ° Signature: c " Date: Print Name: Mailing : AT? >.r N/ "Prr.-enc:an Ciimet Fir;:" 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 852611 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 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 Sun Die.! DrZH:SAM-0060 (R0v. 9/9<^ P:1r- 3 o»' * Department of Environmental Heull APPENDIX B LOG OF BORING B-1 GeoSoils, Inc. PROJECT: HADLEY PROPERTY /•N q- £•t-0. 0)a 5- 10- 15- - Sample 3 0)Und is-turbedB lous/f t.usesSymbo ISM SC CL •i- 3 ^ La /-s X 0)L3 +• 01 O Saturation <.'/.)SAl ^ ^ BORING LOG W.O. E2758-SC BORING B-1 Stt££7 1 Of 2 D/1 TE EXCA VA TED 10-11-99 VIPLE METHOD: Standard Penetration Test ^ Water Seepage into holeUndisturbed, Ring Sample Description of Material -t^. ' :-*?' . . w~ ' y/ \ TERRACE DEPOSITS: @ 0-8' + /-, SILTY SAND, orange/brown, slightly moist, medium dense to dense; moderately easy to drill. @ 8-10' + /-, became very hard to drill. @ 10-15' + /-, SILTY SAND, orange brown, slightly moist, medium dense to dense; moderately difficult drilling. @ 15-20' + /-, CLAYEY SILTY SAND, orange brown, traces of moisture; moderately easy drilling. @ 20-30' + /-, SANDY CLAY, orange brown, traces of moisture. GeoSoils, Inc. B.1 GeoSoils, Inc. PflOJfCr.-HADLEY PROPERTY /•N -1- 1- V/ r•t-a 0a •3R 40- 45- 50- 55- Sample ^ 3 ffl Undi s-turbedBlous/ft.usesSymbo Isc •i- 3 +-~ i| 3)w LQ r\ X 01L3+- 01 0E Saturation (X)BORING LOG W.O. E2758-SC BORING B-1 S//££T 2 OF 2 D/» 7£ £XCXl l/X» TED 10-11-99 SAMPLE METHOD: ^xx> m Standard Penetration Test ^ Water Seepage into holeUndisturbed, Ring Sample Description of Material I '< ^i ^ •// @ 30-40' + /-, CLAYEY SAND, orange brown, slightly moist, medium dense to dense; moderately difficult drilling. @ 40-50' +/-, FINE CLAYEY SILT/SAND, orange brown with traces of fine light brown/tan SILTY SAND; difficult drilling. Total Depth = 51.5' No groundwater encountered Backfilled with Bentonitic Slurry 10-1 1-99 GeoSoils, Inc. pLATE B.2