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Home My WebLink About2007 CON CDC Healey Construction - Change Order #9 Foodland Market' Cl1ANGE ORDER C/O Number 9 To I Iealey Construction Co. California CO initiation Date: July 23, 2007 Project: Foodland Market Project Specification No.:06-04 A Change Order is hereby recommended for the following work in the amount identified in this document: DESCRIPTION OF CHANGE (SAMPLE STATEMENT BELOW): Remove and replace approximately 700 sq. ft. of unstable soil below the proposed concrete pavements adjacent to the building entrance and replace isolated unstable soil conditions located under the new parking area concrete walkway. In addition the paving asphalt contained a binding material fabric between asphalt overlays and could not be disposed at a standard recycle site. This change order also covers the disposal costs. REASON FOR CHANGE (SAMPLE STATEMF,N'I' BELOW): During the demolition and removal of the old concrete pavement and asphalt it was discovered that the subgradc below was wet and unstable. The C'ity's testing soil consultant visited the site and provided recommendations to provide a stable subgrade for the new concrete pavements. For the soil below the concrete pavement adjacent to the building, the soil consultant recommended the removal of the unstable soil to a depth of 12-inches and replaced with aggregate base. This arca totals approximately 700 sq. ft. The subgrade in the parking area was mostly stable and had an existing aggregate base with only isolated areas of subgrade instability. For those unstable areas the recommendation is to remove and also replace with aggregate base. The removal and replacement of unstable soil is a changed condition. In addition, the parking lot asphalt contained a binding material fabric between asphalt overlays. The disposal of the asphalt could not he disposed at a standard recycle sight and created additional cost to disposal at a landfill. In order to avoid added costs and delay to the project, the contractor was directed to remove the material and replace as recommended by the soil consultant. The contractor provided a field estimate not to exceed S4,500. The actual amount is $4,373.76 and based on a time and material basis. COST RECONCILIATION (SAMPLE STATEMENT BELOW): Costs were reviewed and negotiated to the satisfaction of the City. The work will be compensated through the project budgct.(Sce attached detailed breakdown). The contractor agrees Change Order No. 9 in the amount of $4,373.76 covers all costs associated with the above change order work and all overhead expenses and costs and no additional compensation will be permitted. Construction Contract Accounting Summary: The original Contract Amount (Base Bid) Net change by previously authorized Change Orders The Contract Amount prior to this Change Order With this Change Order request the Contract cost is increased by New Contract Amount $ 290,326.00 S--20,043.10 S 310,369.10 $ 4,373.76 — S 314,742.86 Change in Contract Time: Contract Completion Date: Recommended for Approval by: TY PROJEC"1MANAGE Approved by: HEALEYS,OXS'I'RUCTION CO. DATE ITY DEVELOP 'N I' COMMISSION DATE CITY OF,$ATI! NAL C ENGIN RING DEPARTMENT CC: Construction File Inspector Change Order No. 9 0 August 08, 2007 - 3 l - 07- jq/07_. DATE Construction Estimate Page 1 Qty Craft@Hours Unit Material Labor Equipment Total City of National City Owner Addr: Office of City Clerk, January 09, 2006 1243 National City Blvd National City, CA 91950 Contact: Dean Tel: (619) 336-4380 Fax: (619) 336-4397 Remove Unstable Soil. Labor. January 08, 2006 David Healey 1.00 CC@.0000 0.00 David Brothers 1.00 CC@.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 January 09, 2006 David Healey 1.00 CC@8.000 0.00 504.00 0.00 504.00 David Brothers 1.00 CC@4.000 0.00 252.00 0.00 252.00 Richard Raynor 1.00 CL@4.000 0.00 180.00 0.00 180.00 Equipment. Hawthorn Rental - it Service Padfoot trench Roller 33" 1.00--@.0000 -- 30.00 0.00 223.04 253.04 Sub-Contractors. Mark's Bobcat Service 1.00--@.0000 Billy Stokes Trucking, Inc. 1.00--@.0000 0.00 0.00 1,100.00 1,100.00 0.00 0.00 0.00 376.00 Dump Fees. 1.00--@.0000 1.00--@.0000 0.00 0.00 0.00 0.00 0.00 185.00 0.00 165.00 construction Estimate Qty Craft@Hours Unit Material Additional Cost to Dump Asphalt with cloth 1.00--@.0000 -- 0.00 Labor Equipment 0.00 0.00 Page 2 Total 300.00 Fill. Class 2 Base 1.00--@.0000 0.00 0.00 Total Manhours, Material, Labor, and Equipment: 16.0 30.00 Total Only (Subcontract) Costs: 936.00 Subtotal: 5.00% Overhead: 1.00% Insurance / Bond: 10.00% Profit: Estim- = . a 0.00 1,323.04 696.00 2,289.04 1,722.00 4,011.04 5 .12 425.37 46 ee. 'T` A L 21 4, 22 , op at n.l n l 4!-1 'i o 15 70 15Yc 04.3c tx-Pe to '4 "1- 3 Q i 7a 4313,76 • . To: From: Date: Klelnfelder Project No: Subject: Project: Memorandum E. Javier Saunders, P.E. Harris & Associates 750 B Street, Suite 1800 San Diego, Califomia 92101 Kevin R. Wells, Staff Engineer Rick Larson, Senior Engineer Kleinfelder, Inc. 5015 Shoreham Place San Diego, California 92122 January 9, 2007 79531 Wet and Unstable Subgrade Below New Foodland Market 303 Highland Avenue National City, California KLEINFELDER Concrete Flatwork This memorandum presents our recommendations for improving the wet, unstable clayey subgrades below the new flatwork areas located on the west side of the subject project in the appropriate locations shown on the attached rough site sketch (Figure 1). Our observation and recommendations presented below are based on our field engineer's evaluation of the wet, unstable subgrade conditions from our site visit of January 7, 2007, two expansion index tests of soils retrieved from the site, and our previous experience with unstable subgrade soils in National City. We understand that the existing Foodland Market will be improved with new concrete flatwork on the west side of the building and westerly parking lot. At the time of our field engineer's site visit, a portion of the previously existing sidewalks and pavements had been removed in preparation of the new concrete flatwork construction, exposing the existing subgrade surface. One area where the previously existing flatwork had been removed (and where new 4-inch thick concrete flatwork will be placed) was located adjacent to the west side of the existing Foodland Market building and measured approximately 70 feet by 10 feet; this area Is identified as Area A on Figure 1. Another area where the existing AC pavements had been removed (and where new 6-inch thick concrete flatwork will be placed) was located along an 8-foot wide by 100-foot long area that runs east to west across the existing parking lot; this area is identified as Area B. 79531/SDI7M001 Page 1 of 3 January 9, 2007 Copyright 2007 Kleinfelder, Inc. 111■ KLEINFELDER Based on our field engineer's site observations, Area A is underlain by wet, unstable soils that are generally unable to support the contractor's grading equipment without significant rutting of the subgrade surface. Wheel ruts up to 4 inches deep were observed over significant portions of Area A where the subgrade had been exposed to construction traffic. The Area A subgrade generally consists of wet clayey sand and sandy clay soils that were estimated to be roughly 8 percent over optimum moisture content. Our field engineer's testing with a 5/8-inch diameter, conical -tipped, steel probe indicated the wet and unstable conditions were likely limited to the upper 12 inches of the subgrade surface. Laboratory tests indicate the near surface soils in Area A have an expansion index (El) of 42, which indicates these soils have a relatively low potential for expansion. Our field engineer observed that Area B was generally underlain by stable subgrades with only limited areas of isolated instability. The Area B subgrade generally consists of 4 inches of crushed aggregate base over clayey sand subgrades that were generally estimated by our field engineer to be approximately 1 to 4 percent over optimum moisture content. Our field engineer observed that water runoff from other portions of the westerly parking lot had collected in the western half of Area B. A minor amount of isolated rutting of the subgrade surface was observed where the contractor's grading equipment had traveled over these water -collected areas. Laboratory tests indicate the near surface soils in Area B have an expansion index (El) of 5, which indicates these soils have a very low potential for expansion. RECOMMENDATIONS Area A We recommend the upper 12 inches subgrade soil in Area A be removed and replaced with crushed aggregate base meeting the requirements for Caltrans Class 1I aggregate base. The bottom of the excavation should be cut clean and left relatively undisturbed. Since potentially sensitive subgrades are likely to be encountered at the bottom of the excavation, the contractor should avoid excessive construction traffic in the bottom of the excavation while removing the upper 12 inches of wet soil. Once the soils have been removed, crushed aggregate base should be placed in one 12-inch lift across the bottom of the excavation. If possible, the aggregate base should be delivered and placed dry of optimum moisture content. The aggregate base should be compacted with a minimum of six passes of a vibratory -drum -compactor; first without vibration for three passes, then with full vibration three passes. Vibration should be discontinued if the aggregate base tends to lose stability after two vibratory passes. Area B Although some isolated areas of subgrade instability and wetting of the aggregate base surface were observed, we anticipate that most of the Area B subgrade can be left in - place without the need for significant removals. We recommend that Area B be brought to finished subgrade and compacted with a minimum of six passes of a vibratory-drum- 79531/SDI7M001 Page 2 of 3 January 9, 2007 Copyright 2007 Kleinfelder, Inc. KLEINFELDER compactor; first without vibration for three passes, then with full vibration three passes. Existing subgrade surface should not be scarified or disturbed prior to compaction. Our field representative should be onsite to observe the compaction of the subgrade and note any area of instability. Where instability is observed (say more than 1-inch of subgrade deflection or 1/2-inch of permanent rutting), the area should be removed to a depth an 12 inches and replaced with crushed aggregate base (Caltrans Class II) as described previously for Area A. Provided the finished subgrade surface is stable under the contractor's compaction equipment (vibratory drum compactor), density testing of the subgrade surface Is not required. LIMITATIONS Prior to implementing any procedures described in this memorandum, Kleinfelder suggests that the contractor obtain the owner's approval before beginning work. A Kleinfelder representative should monitor improvements to the subgrade and evaluate the applicability of the recommendations presented in this memorandum. If the subsurface conditions differ from those described herein, we should evaluate the situation and recommend appropriate changes in design or construction procedures. Recommendations contained in this memorandum are based on our field observations and our present knowledge of the proposed construction. It is possible that soil conditions could vary between or beyond the points explored which could require a revision to our recommendations as indicated above. We have prepared this memorandum in substantial accordance with the generally accepted engineering practice in the San Diego area at the present time. No warranty is made or intended. If you have any questions or comments regarding this memorandum, please contact our office at (858) 320-2000 at your earliest convenience. KRW:REL:aa Attachments: Figure 1 cc: Din Daneshfar, City of National City 79531/SDI7M001 Page 3 of 3 January 9, 2007 Copyright 2007 Kleinfelder, Inc. ,677 EA 6))0,4 .•1 �KLEINFELDER PROJECT fzpor.,L./in/✓j A44-1-1. ("i" SUBJECT (.a 'z f/J lC'CA1,4 1'+.+i l.r.s•.f PROJECT NO. BY 1<Loe REVIEWED BY Fa.,t L.4t / A:RI<r i �i- 'rz\i+ ) \G CFI SHEET_ OF. 1- Wc9 f UNS Fr : SJ3&P.+Qe� ?ate_ l '11=rirnaNcG /7'%J c;-y r;o s A ' A - 2.e-?^lLA wITt1 (217ccne,_ A 1 • e_--v Zl 7n cp+`Y1 AuI i w� ens s L4 cc fN cawc (i; U+` Is Tv;',1Si-L:j DATE DATE WITH L] - 17s4�. Sc` V 7 z F.<. •i c� iG� _ 7.2c)l1.-,r ocicEA; Sft01-1...1. T5c 1t"A'0v t) /j7.e 'L:A<c '* . 4-1.1' 12 Iw I'F. S C.i (= Q.j«d,l'fe'r) n�� 1r.Asc 1-7 4-5 14 c, H L.a niAvg. 3 FAT-ze.n a 1-/vw2IT: M-4 LADE, CA 92040.0903 619 340 8786 619-390-7508 Fax Sold To: Healey Construction Company 1545 Tidelands Avenue, Ste. E National City, CA 91950 Ship to: OD LAND 303 HIGHLAND AVENUE NATIONAL CITY Invoic Invoice Numbe 412 Invoice Datt Jan 9, 200 Pag Customer ID Customer PO Payment Terms H400 Sales Rep ID FOOD LAND pphMethod Net 15 Days Ship Date 1/9/07 Quantity ! Item 1D.00015 1.00 06 1.00(006 Dump Truck, Dump Fees Incurred: DIRT Dump Fees Incurred: DIRT 1.00�007 Materials: trONS ) Check No: Due Date -H 1/24/07 Description [ Unit Price Bobcat & Excavator - One Operator 110.00 185.00 165.00 RECYCLED CLASS II BASE (55.21 j 773.35 PAID CK. O. DATE Subtota 1 Sales Tax Total Invoice Amount Payment Received TOTAL L Extension 1,100.00 185.00 165.00 773.35 2,223.35 2,223.35 2,223.35 I' i INC. General Engineering -A License #t: 844597 P.O. Box 1078 Lakeside, CA 92040-0903 Pt,ca re: 619.390.87SE Fax: 5 19.390.750B JOB ORDER I-9-67 DATE TIME IN TIME OUT PO# JOB# r-t=0p c..46ri P PREV WAGE CUSTOMER `j— E_Ar. j_ E -' 6._tsiu S JOB ADDRESS 3 30 I I.-4-k y N. Lt}yy U N ,R--T i i ..1 A i- C I T Y BILLING ADDRESS CRY, STATE, ZIP CONTACT NAME CELL PHONE OFFICE PHONE DESCRIPTION ....-......• ... ` i......✓.FR:::.... CITY HOURS RATE AMOUNT MOVE -IN/ MOVE -OUT 1 Lam. BOBCAT EXCAVATOR BOBCAT & EXCAVATOR CONCRETE BREAKER DUMP TRUCK, BOBCAT & EXCAVATOR 10 1i0.00 I I O 0• Co 0 DUMP TRUCK ONLY I .pier I8S.p0 I S S.00 DUMPH pumpFEL I OtRT 1Cz,S,00 I C . oO LABORER 5rJ,aiTwe ,13.Ob+iiit . 4 !y 7 3. 35 MATERIALS f<,Ec-yuzC.Lisil P RENTAL - .____ OTHER '\_MTh (- -Alla a a 3, 3 S) NOlCS �.)c7RP. E XcAv.4T I+v 9 c, E rl A � L. „�+ ti A-A-c_ i N' O t- c IL /1 s S a 8 R-St IINVOICE TOTALI5 INITIALS Not responsible for damage to any underground utilities, sprinkler and irrigation lines not located or potholed by locating service. Not responsible for incidental water damage from coring or saw cutting. Not responsible for water and slurry control into gutters or storm drains. Not responsible for delays due to equipment malfunctions, weather or causes beyond our control. Our liability shall be limited strictly and solely to acts or omissions of our direct employees or contracts notwithstanding. Customer agrees to pay for all services at our current hourly rates. Rates are subject to change without notice. If you have an account with Mark's Bobcat and Services, Inc., then full payment is DUE 14 DAYS from receipt of this job order, unless other terms have been specifically agreed to. If you do not have an account set up, then full payment is due upon receipt of Job Order. Under the Mechanics Lien Law, any contractor, subcontractor, laborer, supplier or other person who helps to improve your property, but Is not paid for his work or supplies, has the right to enforce a claim against your property. Any balance over 30 days will be charged a service charge at the maximum APR allowable by law, together with attomey's fees and other costs of collection. Billy Stokes Trucking, Inc 325 Harbison Canyon Road El Cajon, CA 92019-1524 Bill To Healey Construction Invoice Date Invoice # 1/9/2007 1168062 P.O. No. Terms Project Quantity Description Rate Amount 4 Highland Road - 4 hr. min 94.00 376.00 Total $376.00 MULTI TERRAIN LOADER C•T25; 24 2 Width 5'6' 6'2'. _. 6.4'_. SKID STEER ATTACHMENTS Day Week Month 325 1300 3900 350 _ 1400. 4200 375 1500 4500 Day Week Month 6r<,aker 150 600 1800 Trrncher;_sweeper / auger ! 4-in-1 bucket _75 300 900_ WALK BEHIND UTILITY LOADER - Day Week Month 910 TX420 wTucket auger, leveler, forks175 700 2100 WALK 3EHIND ATTACHMENTS Day Week Month ::Iren.ker _ 10(1.. 400 1200_ Trencher / cultivator / broom / stump grinder _ 75 300 .• 900 SKIPLDADERS 4100i. Drive Cap Yd. Day Weelr: Moab '/asseys/J.DJFOX 4WD 1 225 900 2700 TRENCHERS Trench Dept !'dch Witct / Vermeer 48' ',WATER TRUCKS/TRAILERS Gallons :',tiler Truck 2 000 i,la:erTower_ 10,000 lacer Trailer -Tow Behind 500 ensure Washer-3000 PSI JUMP TRUCKS I.I..-mp Truck Cap. Yd. 5-6yd Day WeekMonth 275 1100 3300'. 4111keee>• Day Week Month. 260 1040 3120 125 500 1500: 100 400- 1200 75 300 900 VaD Day Week Month 250 1000 3000 SINGLE DRUM SMOOTH Drum Width Op. Weight Day Week: Mvmb CAT CS323 Smooth 50' 10,000 300 1200 .3600 CAT CS433 Smooth 66' 14200 350 1400.4200' CAT CS563____ Smooth 84' 24,700 400 1600 4800 SINGLE DRUM PADDED Drum Width Op. Weight Day Week Month CATCP323 Padfoot 50' 10,500 325 .1300 3900' CAT CP433 Padfoot 66' 15,000 375 1500 4500: CAT CP563 Padfoot 84' 25,700 425 1700 500- DOUBLE DRUM SMOOTH Drum Width Op. WelgM Day Week Month DN315/RD11A 1XTon 36' 2,415 150' 500' 11100> CAT CB224 3-5 Ton 47' 5,335 175 ; 700 '2100' CAT C8434 5-8 Ton 56' 14,300 300 1200' 3600' CAT CB534 11-12 Ton 6T 20,270 350 1400 ''421IO PNEUMATIC RIDE ON ail =E. Op. WeIgM Dar;` •Wei CAT PS150 9 Wheel Roller 28500 30i5O(F:' VIBRATORY WALK BEHIND Drum Wldlh Op. Weight Padfoot Trench Roller 24' or 33' 3,000 TAMPERS SMOOTH DRUM AVM ABLE Shoe size Op. Weight Day Week- Mort* Wacker BS700 Gas 13x13' 154 95 380 1140 Wacker DS720 Diesel 13x13' 165 100 400 1200.. VIBRATORY PLATES Width Op. Weight Day Week Moon Wacker WP1550 19.5225 75 300 900 LAKESIDE ESCONDIDO CARLSBAD 619) 561-8700 (760) 745-8775 (760) 431-7000