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SS9301-CS 930712 ,---- Coppell, Texas 75019 The City With A Beautiful Future 214-462-0022 July 12, 1993 Mr. H. Wayne Ginn, P.E. The Ginn Corporation 17103 Preston Road, Suite 205 Dallas, Texas 75248 RE: Grapevine Creek Sewer Branch I and II Dear Wayne, In response to your request for an opinion on whether or not Kenko is due compensation for extra bedding material used on the captioned project, I site the following specifications: Division O - Bidding and Contract Documents. Section 220 - Investigation Data 1.1GENERAL B. Bidder should visit the site and acquaint himself with conditions prior to bidding. Additionally, the Bidder/Contractor may make his own investigation of existing subsurface conditions. Neither the Owner, nor the Engineer will be responsible in any way for the additional compensation for additional work performed under the contract due to Contractor's assumptions based on subsoil data prepared solely for Engineer's use. Section 830 Specific Project Requirements 1.9 SUBSURFACE CONDITIONS Contractor shall make his own investigation of subsurface conditions. No claims for extra compensation due to unusual soil conditions that are found to exist will be allowed. Page 2 Division 2 - Sitework Section 2622 - PVC Sewer Pipe Part 3 Execution 3.4 TRENCH PREPARATION: A. Where the bottom of the trench at subgrade is found to be soft or includes organic material, the contractor shall excavate and remove the undesirable material to the width of the trench and at a depth of at least 12 inches, or as required so as to provide a firm foundation for the pipe. The over-excavation shall be replaced with granular material and compacted to a minimum of 95 % Standard Proctor per ASTM D 698. Additionally, boring numbers BI-ll @ Sta 56+75, Bl-12 @ Sta 51 +75 and Bl-14 @ Sta 41-75 all show the presence of ground water. Based on this information, I recommend that the request by Kenko for compensation for additional bedding material be denied. I hope this information is helpful. If I can be of further service please do not hesitate to call. Sincerely, Project Representative cc: Kenneth M. Griffin, P.E., City Engineer file/kgriffin/grpvne/ginn, ltr -- JLL~ ~ /q93 f'^(L t-\ .\~IA9--G~V1 PE I v _ . r I , Tk c;: ~ V\ Cm-tf6{Zf\ +t ~ V1 l1\()3. t're~V\ R~.l s~ U:l.5 \))d\L\.o.~ T eJCtt~ lS2-4b ~.. G(U~ ~\L- ~l0-eA ~6\V\~l\.:r d1vtJ.zr ~( ~~ ;;; I//. ~'SpB1A~ ~ 1()I1.V ~tuJb"b-r ~ d\V\ 19p;H(~ C9-Vt uJk-!iw cH ~.~ ~~ (~ ~ c~I\J\F~~~ ~ e)(~_~JJu<<~ ~k6--\ LJ-~~ eM tkc! ~p~~ P~l~~ II 5L~ 1M -fc \,\~t~ "')P"d~~-h~\\S < 0 DnH$t~ 0 BJl;""'1 ""~ C&>,wJ ~c:wwu,JS . (:9 ~~ 2-LO c;)Ct' I Y\ ~~{9t'l~J~ ~~ I.l C; ~,-;ttJ p~ tc\ (5... ls-~dck,r J keve( d,. -- @ ~~, ~~D S~~~ ?~\~ ~~~~~ \.c; Stb Stot~ ~d'L ~'o-~5 C6-v\,~~ S~d\l\ . '.' C)'~\l'\~~~ Z- s~ ~wQQL .........1'2:\ ~~~ L!e'Z:l..-, puce ~ i\~ .g'~~4 r .~<>-i~~p:.t"--t.:1M \- ~\O\ A. tL~ C) t,0~ tk ~~ 4 ffi.o ~l ' - - . - --- ~ ~. Add\. ~. CW\GL ([~ J (5ttf l~1 <<.> ~tJ u. Nl bsv 5 r.. U @ 5 ~ 5(p t 7:; B 1 ~ I L ~ S~ 5/tlS aDr\J. 5l-t4 @ S~ L\\t1S a:tl ~~-tko p-e-m 6* t'f&u,~ ~ -\<<r ' &seJ i9'l!!'l Hr(~ ;1t~n1C{,h6A'1l J reee.uw-.J tM-1ir fD/a# ~ I~. t~ &of Coolt'l ~~ ~ ~ c1J.rdt'r7i\c<J ~J'1 tV\cLk~( b>- JvL~d _ J A~ IN'? tl{Jo,~, 26 kip k/. J f f duo, b- ef- -f Ll-d kl'-l &< IfLLQ P &ex- fye k 'iLJ A Q:, c ~ -/0 Ca. U. , SvtA-~~ J _ ~v,~ ~ ~~klf, . '?C\9\~ ~~~-k.ke - -- DIVISIOB 0 - BIDDIBG AHD COBTRACT RBOUIRBKBMTS SBCTIO. 00220 - SOIL IBVBSTIGATIO. DATA PART 1 - QEORAL 1. 1 GENERAL: PAGE 00220-1 A. Soil investiqation reports have been prepared for the proposed improvements for the Grapevine Creek Sewer Trunk Main. That report was obtained by the Engineer for his own use in designinq the project. Its accuracy or completeness is not quaranteed by the OWner or the Enqineer and in no event is it to be considered as part . of the contract plans or specifications. -- Bidder should visit the site and acquaint himself conditions prior to biddinq. Additionally, the Bidder/Contractor may make his own investigation of existing subsurface conditions. Neither the Owner, nor the Engineer will be responsible in any way for the additional compensation for additional work performed under the contract due to Contractor's assumptions based on subsoil data prepared solely for Enqineer's C. Oriqinals of the soil investiqation reports for the Grapevine Creek Sewer Trunk Main may be inspected at the Enqineer's office. It is available for iDforaatioD ~ and is not a warranty of subsurface conditions on this project. The data is available for review by biddinq contractors upon written request. Requests are required to be in the followinq form: "Please forward a complete copy of the subsurface exploration reports for the Grapevine Creek Sewer Trunk Main. The contracting firm herein named releases the Owner and Enqineer from any responsibility or obliqation as to its accuracy or completeness or for any additional compensation for work performed under the Grapevine Creek Sewer Project contract due to assumptions based on use of such furnished information." i 1 " f' i,.,' \.j 1 ~! D. Copies of the utility trench confiqurations, earth pressure diaqrams for temporary bracing or shoring, soil and shale stratiqraphy, sieve analysis, and log of borings is contained in Appendix A. PART 2 - PRODUCTS Not Used PART 3 - EXSCCTION Not Used END OF SBCTION GINN & CASE, INC. PRO,TF,C"T' .4 C:;.4 l.i c:; c:; GRAPBVINB CRBBIt SBWBR TRtJlflt DIN I" I I I I I I I I I I I I I I I . . III DIVISIO. 2 - SIT"O~ S,OTIO. 02122 - PVC J~WBR PIPE PAGE 02122-3 - B. Installation shall be in accordance with the recommendations contained herein and in the pipe manufacturer's installation guide. All applicable safety regulations shall be followed. 3.3 FILL MATERIALS: A. pipe bedding and backfill materials shall be as shown on the plans. 3.4 TRENCH PREPARATION: A. Trenches shall be open cut to proper depth and alignment for the installation of the pipe and appurtenances as shown on the plans. The minimum trench width shall be the pipe o. D. + 18", unless noted otherwise. Where excavation or caving causes excavation wi thin the pipe zone to be wider than specified, the contractor shall remove all loose and3. sloughed in material from the tr lace ' with co ula at 'ale ere the bottom 0 e trench at subgrade is foun to be soft or includes organic material, the contractor shall excavate and remove the undesirable material to the width of the trench and at a depth of at least 12 inches, or as required so as to provide a firm foundation for the pipe. The over-excavation shall be replaced with granular material and compacted to a minimum of 95% Standard Proctor per ASTM D 698. B. Dewatering: The contractor shall provide and maintain at all times, during construction ample means and devices with which to remove and properly dispose of all water, from any source whatsoever, entering the trench. Pipe trenches shall be kept free from water during excavation, construction, pipe laying and joining. C. Trench Support: Contractor shall follow the recommendations of the manufacturer during installation and shall comply with all applicable safety standards and regulations. 3.5 PIPE LAYING: A. Before sewer pipe is placed in trench bottom, the sides and bottom of trench shall be carefully prepared, the bedding placed and the necessary bracing, Sheeting or shoring in place, where required. Each section of pipe shall be accurately placed to the line and grade called for on the drawings. GINN & CASE, INC. PROJECT 454/455 GRAPBVID CUBit SBWBR TRUBIt )lAI. CITY or COPPELL, TEXAS - ^- ~ - ..:Ii:..."'....-".:..t~k.:-Il< i!i':;~:;\~;>,;;;:\ - - DIVISIOB 0 - BIDDIBG AKD CONTRACT RBOUIRBKBNTS SBCTIOB 00830 - SPBCIWIC PROJBCT RBOUIRBKBNTS 1.8 REFERENCE SPECIFICATIONS: . . . . . PAGB 00830-4 Reference to ASTM, or others as listed below, shall be considered as referring to the Specifications or Method of Test as set forth by those various organizations and shall be considered as part of these Specifications when designated as such. Abbreviations and meanings are as follows: A.S.A.............American Standards Association A.S.T.M...........American Society of Testing Materials A.A.S.H.T.O.......American Association of State Highway & Transportation Officials A.C.I.............American Concrete Institute A.W.S.............American Welding Society A.W.W.A...........American Water Works Association S.S.P.C...........Steel Structures Painting Council, Federal Specifications Treasury Department Procurement Division, u.S. Government U.L...............Underwriters Laboratories N.E.M.A...........National Electrical Manufacturers Assoc. W.P.C.F...........Water Pollution Control Federation T.S.D.H.P.T.......Texas State Department of Highways and or THD Public Transportation C.D.G.S...........City of Dallas General specifications S.S.P.W.C.N.C.T...Standard Specifications for Public Works Construction North Central Texas N.C.T.C.O.G.......North Central Texas Council of Governments SUBSURFACE CONDITIONS: ---..------ Contractor shall make his own investigation of conditions. No claims for extra compensation due to unusual soil conditions that are found to exist will be allowed. 1.10 SERVICE OF MANUFACTURER'S REPRESENTATIVE: (Where Applicable) The Contract price for the project shall include the cost of furnishing competent and experienced engineers or superintendents who shall represent the manufacturers and shall assist the Contractor, when required, to install, adjust and test the equipment in conformity with the Contract Documents. After the equipment is placed in permanent operation by the Owner, such engineer or superintendent shall make all adjustments and tests required by the Engineer to prove that such equipment is in proper and satisfactory operating condition, and shall instruct the Owner's representatives in the proper operation and maintenance of such equipment or system. 1.11 PLANS AND SPECIFICATIONS AVAILABILITY: The Engineer will provide the Contractor with three (3) copies of Plans and Specifications in addition to the GINN & CASE, INC. PROJECT 454/455 GRAPBVIIIB CUBit SBWBR TRtJIIK KAIB CITY O. COPPBLL, TBXAS .. .,.