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Home My WebLink About3907; RANCHO SANTA FE ROAD WIDENING; OFF SITE WETLAND MITIGATION; 2009-07-3107-31/2009 12:18 FAX 310 840 8863 WALLACE LABS CB CO 0001/001 WALLACE LABORATORIES, LLC 365 Coral Circle El Segundo, CA 90245 phone (310) 615-0116 fax (310) 640-6863 July 31, 2009 Fax 760/745-8995 Green Horizons Landscape and Maintenance, Inc. 1530 Industrial Avenue 'Escondido, CA 92029 RE: 30-01164 Off Site Wetland Mitigation, P.O. No. 11475 Dear Allister, The soils are acidic. The pH values are 5.99 and 6.13. Salinity is moderate at 1.99 millimho/cm for sample 1 and is low at 0.77 millimho/cm. Nitrogen is suflicient. Phosphorus is low in sample 2. Potassium, zinc, boron and sulfur are low in both samples. Recommendations General soil preparation for native plants. Broadcast the following materials uniformly. The rates are per 1,000 square feet. Incorporate them homogeneously 6 inches deep: Potassium sulfate (0-0-50) - 8 pounds Triple superphosphate (0-45-0) —4 pounds for sample 2 agricultural gypsum - 15 pounds good,qualty composted organic amendment - 3 cubic yards For preparation of backfill mix for container, plants, uniformly blend the following materials into clean excavated soil. Rates are per cubic yard: Potassium sulfate (0-0-50) - 1/3 pound Triple superphosphate (0-45-0) - 114 pound for sample 2 agricultural gypsum - 1 pound good quality composted soil amendment - 15% by volume Soil amendments derived from compost are expected to provide zinc and boron. Do not over apply organic matter to native plants. For site maintenance, apply calcium nitrate (15-0-0) at 6 pounds per 1,000 square feet several times a year. If not over applied, it will help to increase the pH. Monitor the site with periodic soil testing and adjust the maintenance program as needed. Do not acidify the soil. Sincere/ Gain A. Wallace, Ph. D. GAW:n' 1 Soil Analyses Plant Analyses Water Analyses Date______________ -NOEXCEPTIONS TAKEN 0 MAKE CORRECTIONS NOTED 0 SUBMIT SPECIFIED ITEMS 0 REVISE AND RESUBMIT DREJECTED - Corrections or comments made on the shop drawings during this review do not relieve the contractor of his rsponsibiIity to comply with the requirements of the drawings and specifications. This review is only to - - check for general conformance with the design concept of the project and general compliance with the Contract Documents. The contractor remains responsible for confirming and correlating all dimensions and , quantities; selecting fabrication processes and techniques of construction; coordinating the work of the trades; and performing the work in a safe and satisfactory manner. 1 4-1 '4 -- 4 .-- - 4 - - - 4 -4 - - 0131/2008 11:46 FAX 310 640 6863 WALLACE LABS CG Co WALLACE LABS j[son.s REPORT 1Irint Date July 30, 2009 Receive Date 7/29109 365 Coral Circle llLocation 30-01164 Off Site Wetland Mitigation, P.O. No. 11475 El Segundo, CA 90245 Requester Grccn Horizons Lanscapc and Maintcuancc, Inc. (310) 615-0116 - rephic inteprtation: • "my low," low, c modma .luIIIuII,Iu. uii UUUUWIJJ ALit 'hlgll, '' VOIY high - extractable - mglkg soil Semple ID Number 09-211-06 09-211-01 Interpretation of data J Sample I Sample 2 low medium high clenti graphic gntphii 0.7 8-15 over 15 phosphorus 11.48 " 4.20 " 0-60 60-120 121.180 potassium 52.88 40 34.54 " 0-4 4 - 10 over 10 Iron 23.41 ".4 9.63 " 0- 0.5 06- 1 over I manganese 1.63 •'" 1.07 " 0-1 1 -1.5 over 1.5 zinc 0.93 " 0.71 " 0-0.2 0.3-0.5 over 0.5 copper 1.59 257 0-0.2 0.2. 0.5 over I boron 0.13 •' 0.08 ratio ofcaiciumtomagnesjun calcIum 426.47 "" 397.19 " needs obc more ihan2or3 magnesium 13159 "' 73.08 227.02 " 63.01 should be less than potassium sodium sulfur 22.46 ' 12.75 molybdenum ad • no nickel 0.14 - 0.13 The following trace aluminum ad Dd elements may be toxic arsenic 0.06 0.07 The degree of toxicity barium 0.71 • 1.20 depends upon the pH of'cadmium 0.02 ' 0.02 ' the evil, evil texture, . chromium V ad • ad organic mutter, and the cobalt 0.04 ' 0,04 concentrations of the lead 1.28 1.18" Individual elements aswell lithium 0.21 0119 ' as to their inthrsctIon mercury ad nd selenium ad nd - The p11 optimum depends silver ad ' ad - upon soil organic strontium 2.06 4 2.09 - matter and clay content- tin nd # a d for clay and loam soils: vanadium 0,24 • 0.17 under 5.2 is too acidic 63 to 7 Is Ideal V Saturation Extract over 8.0 Is too alkaline Hvalue 5.99 go 6.13 The ECe isa measure of Ce (mull. t 1.99 " 0.77 '• the soil salinity: mba/cm) j millicq/l 1-2 affects a few plants calcium 145.1 7.3 43.5 2-4 affects some plants, magnesium V 757 6.5 22.2 4 affects many plants. - sodium 117.9 5.1 74.4 V potassium V 11.4 0.3 2.7 cation sum 19.2 problems over 150 ppm chloride - 99 2.8 41 good 20-30ppm nitrate aeN 164 11.7 30 phosphorus as P 0.0 010 0.0 toxic over 800 sulfate as V 59-9 V 3.7 39.1 V anion Sum 18.3 -- toxic over 1 for many plants boron as S 0.16 ' 0.13 ' IInvreaslng problems start st3 SAR 2.0 " 2.3 •• eat, gypsum requirement-lbs./1000 sq. ft. - 12 slow/fair 11 slow/fair relative Infiltration rate estimated soil texture sandy loam sandy loam time (calcium carbonate) organic niaflCs' no low/fair no towlfair moisture content orsoil V 0.5% half saturation percentage 13.9% 12.4% -MWAU ury nyu or mgi. ior SululSuon extract pH and EC* are measured In a saturation paSte oxtreeL nd means not detected. - Analytical data determined on soil fraction passing a 2 mm steve. V C' @ 002/002 2.2 1.8 3.2 DI 7.3 1.2 2.2 0.0 2.4 U Page 1 of Duane Soileau From: Stuart Fraser [sfraser@dudek.com] Sent: Monday, August 03, 2009 9:01 AM To: dscmic@cox.net Cc: John Minchin; John Cahill; DougHei@aol.com; John Maashoff Subject: RE: Wallace Soil Report - Offsite Mitigation Duane, The analysis and results do not yield any concerns. I am fine with the Wallace Labs recommendations if you want to expedite the process and move forward before John returns. - Stu STUART FRASER Habitat Restoration SpecialistlRLA #5301 DUDEK ENGINEERING + ENVIRONMENTAL 605 THIRD STREET ENCINITAS, CALIFORNIA 92024 T 760.479.4274 F 760.942.9976 WMN.DUDEK.COM PLEASE NOTE: Dudek uses an email filter to clean viruses and filter Spam. Please take the time to verify receipt of any important or time-sensitive email sent to us. From: Allister Cooney [mailto:allisterc@greenhonzonsmaint.com Sent: Monday, August 03, 2009 7:45 AM To: Stuart Fraser; ccota@sierrapacificwestcom; Reception; dscmic@cox.net Cc: John Minchin; John Cahill; DougHei@aol.com; John Maashoff; Duane Soileau Subject: RE: Wallace Soil Report - Offsite Mitigation Stuart / Duane, I think we're looking for approval before John gets back - the suggested amendments are in the soil report; is there any way we can get approval today? . . Thanks, Allister. From: Stuart Fraser [mailto:sfraser@dudek.com] - Sent: Monday, August 03, 2009 7:24 AM To: Allister Cooney; ccota@sierrapacificwest.com; Reception; dscmic@cox.net - Cc: John Minchin; John Cahill; DougHei@aol.com; John Maashoff; Duane Soileau Subject: RE: Wallace Soil Report - Offsite Mitigation All, In last weeks construction meeting, I believe it was agreed that we would wail until John Minchin returned 8/5/2009 Allister Cooney . V.P. of Construction GREEN HORLZON : 1530 Industrial Ave., Escondido, Ca 92029. Tel. (760) 745-1776 x109 Fax. (760) 745-8995 Cell (760) 535-3056 Emi. allisterc@greenhorizonsmaint.com " Web. www.greenhorizonslandscape.com Regards, I Page 2 of 3 on the 8th of August to review the soil report and approve the soil amendments. If there is any question regarding this issue or if the approval needs to be expedited, please contact Duane Soileau. Thanks, Stu STUART FRASER Habitat Restoration .Specialist/RLA #5301 DUDEK ENGINEERING + ENVIRONMENTAL 605 THIRD STREET ENCINITAS; CALIFORNIA 92024 T 760.479.4274 F 760.942.9976 WWW.DUDEK.COM PLEASE NOTE: Dudek uses an email filter to clean viruses and filter Spam. Please take the time to verify receipt of any important or time-sensitive email sent to us. From: Allister Cooney [maitto:allisterc@greenhorizonsmaint.com] Sent: Friday, July 31, 2009 3:04 PM To: ccoth@sierrapacificwest.com; Reception; dscmic@cox.net Cc: John Minchin; Stuart Fraser; John Cahill; DougHei@aol.com; John Maashoff Subject: Wallace Soil Report - Offsite Mitigation Hi Chuck, Please find attached the soils report for the Offsite Mitigation job. I took two samples for the area where you are currently processing topsoil. I have previously submitted product information for the compost, fertilizer and other amendments, but don't believe I have received confirmation that these were accepted. I am requesting approval to proceed with amending the topsoil per the attached soils report and my submittals. 8/5/2009