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Home My WebLink About620024.tiffContract No, CONSTRUCTION CONTRACT Name and Address of Contractor 14 A. Nielson Construction 801 West 5thAeon Company Deaver 4, Colorado Q a'e oi"Cdntrac-t Maaoh 19, 1962 Check Appropriate Box Individual Partnership Incorporated in the State of CalessI* Contracting Agency State Soil Ceasorvatien Board, 1525 Shaman St., Denver 3, Colorado Contract For (Work to be Performed) Construction of one Stabilisation Streeter* and ono Box Inlet Drop Spillny Place Located within the Ceaibank Crook Watershed, Situs CB -2 and CB -3, approzinately 4 miles West of Ault, Weld Counts, Colorado Amount of Contract (Express in words and figures) Twenty -see► Thousand sewn hundred six and no/100 dollars ($27,706.00) State Soil Consorvatian THIS CONTRACT, entered into this date by the yy " hereinafter called the Contracting Local Organization, represented by the Contracting Officer executing this contract, and the individual, partnership, or corporation named above, hereinafter called the Contractor, witnesseth that the parties hereto do mutually agree as follows: Statement of Work. The Contractor shall furnish all labor, equipment, and materials and perform the work above described for the amount stated above in strict accordance with the General Provisions, specifications, schedules, and drawings all of which are made a part hereof and designated as follows: General Provisions (Porn SCS-43) Addendum No. 1, dated February 28, 1962 Bid Schedule - Site CB -2 and CB -3, Cealbank Creek Watershed Technical Speellieations - Nos. 3-58 4-58, 5-58, 8A-58, 9-58, 12-58 13-58 20-58, 100-58, 10158, 102-58, 103-58, 104-58, 30j-58, 107-58,.111-58, 120-58 Special Specifications - Nos. L-217, L-218, L-232, L-234, 1.-244, L-246, L-260, Additional Special Specifications - I. Structure Drains, II. Watestop, III. Corrugated Metal Pipe Conduit f, (�, �O%(� Drawings - Sits CB -2s Jo. 5,8-17,510 shoots 1 through 5 Site CB -3t No. 5,a-17,766 sheets 1 thraa®t 9 G' gtD:9-9 Work shall be started: Within __p_ calendar days after date of receipt of notice to 'proceed. Work shall be completed: Within �_ calendar days after date of receipt o3" notice to proceed. Alterations. The following changes were made in this contract before it was signed by the parties hereto: In witness whereof, the parties hereto have executed this contract as of the date entered on the first page hereof. Cont1actircal Orrganization) BINC->tze(22/ kin BY Official Title CONTRACTOR as atNara of Contrac l Cry (Signature) SCS-43 U. S. DEPARTMENT OF AGRICULTURE REV. 6-61 SOIL CONSERVATION SERVICE GENERAL PROVISIONS (CONSTRUCTION CONTRACTS) (PL -566) 1, DEFINITIONS Terms used or referred to herein are defined as follows: (a) Contracting Local Organization: The organization or agency awarding the contract. (b) Contracting Officer: The individual or his duly ap- pointed successor who is designated and authorized to enter into and administer contracts on behalf of the Contracting Local Organization. (c) Engineer. The individual or his representative charged with the responsibility of determining that the construction work conforms to the technical requirements as set forth in the Drawings and Specifications. 2. SPECIFICATIONS AND DRAWINGS. The Contractor shall keep on the work a copy of the draw- ings and specifications and shall at all times give the Con- tracting Officer access thereto. Anything mentioned in the specifications and not shown on the drawings, or shown on the drawings and not mentioned in the specifications, shall be of like effect as if shown or mentioned in both. In case of dif- ference between drawings and specifications, the specifications shall govern. In any case of discrepancy either in the figures, in the drawings, or in the specifications, the matter shall be promptly submitted to the Contracting Officer, who shall promptly make a determination in writing. Any adjustment by the Contractor without such a determination shall be at his own risk and expense, The Contracting Officer shall furnish from time to time such detail drawings and other information as he may consider necessary, unless otherwise provided. 3. CHANGES The Contracting Officer may, at any time, by written order, and without notice to the sureties, make changes in the drawings and or specifications of this contract if within its general scope. If such changes cause an increase or de- crease in the Contractor's cost of, or time required for, performance of the contract, an equitable adjustment shall be made and the contract modified in writing accordingly. Any claim of the Contractor for adjustment under this clause must be asserted in writing within 30 days from the date of receipt by the Contractor of the notification of change unless the Contracting Officer grants a further period of time before the date of final payment under the contract. If the parties fail to agree upon the adjustment to be made, the dispute shall be determined as provided in Clause 6 of these General Pro- visions; but nothing provided in this clause shall excuse the Contractor from proceeding with the prosecution of the work as changed. Except as otherwise provided in this contract, no charge for any extra work or material will be allowed. 4, CHANGED CONDITIONS The Contractor shall promptly, and before suchconditions are disturbed, notify the Contracting Officer in writing of: (a) subsurface or latent physical conditions at the site differ- ing materially from those indicated in this contract, or (b) unknown physical conditions at the site, of an unusual nature, differing materially from those ordinarily encountered and generally recognized as inhering in work of the character provided for in this contract. The Contracting Officer shall promptly investigate the conditions, and if he finds that such conditions do so materially differ and cause an increase or decrease in the Contractor's cost of, or the time required for, performance of this contract, an equitable adjustment shall be made and the contract modified in writing accordingly. Any claim of the Contractor for adjustment hereunder shall not be allowed unless he has given notice as above required; or unless the Contracting Officer grants a further period of time before the date of final payment under the contract. If the parties fail to agree upon the adjustment to be made, the dis- pute shall be determined as provided in Clause 6 of these General Provisions, 5. TERMINATION FOR DEFAULT - DAMAGES FOR DE- LAY - TIME EXTENSIONS (a) If the Contractor refuses or fails to prosecute the work, or any separable part thereof, with such diligence as will insure its completion within the time specified in this contract, or any extension thereof, or fails to complete said work within such time, the Contracting Local Organization may, by written notice to the Contractor, terminate his right to proceed with the work or such part of the work as to which there has been delay, In such event the Contracting Local Organization may take over the work and prosecute the same to completion, by contract or otherwise, and may take posses- sion of and utilize in completing the work such materials, appliances, and plant as may be on the site of the work and necessary therefor. Whether or not the Contractor's right to proceed with the work is terminated, he and his sureties shall be liable for any damage to the Contracting Local Organization resulting from his refusal or failure to complete the work within the specified time. (b) If fixed and agreed liquidated damages are provided in the contract and if the Contracting Local Organization so terminates the Contractor's right to proceed, the resulting damage will consist of such liquidated damages until such reasonable time as may be required for final completion of the work together with any increased costs occasioned the Contracting Local Organization in completing the work. (c) If fixed and agreed liquidated damages are provided in the contract and if the Contracting Local Organization does not so terminate the Contractor's right to proceed, the re- sulting damage will consist of such liquidated damages until the work is completed or accepted. (d) The Contractor's right to proceed shall not be so terminated nor the Contractor charged with resulting dam- age if: (1) The delay in the completion of the work arises from unforeseeable causes beyond the control and without the fault or negligence of the Contractor, in- cluding but not restricted to, acts of God, acts of the public enemy, acts of the Contracting Local Organi- zation in its contractual capacity, acts of another contractor in the performance of a contract with the Contracting Local Organization, fires, floods, epi- demics, quarantine restrictions, strikes, freight em- bargoes, unusually severe weather, or delays of sub- contractors or suppliers arising from unforeseeable 1 causes beyond the control ..., without the fault or negligence of both the Contractor and such subcon- tractors or suppliers; and (2) The Contractor, within 10 days from the beginning of any such delay (unless theContracting Officer grants a further period of time before the date of final pay- ment under the contract), notifies the Contracting Officer in writing of the causes of delay. The Contracting Officer shall ascertain the facts and the extent of the delay and extend the time for completing the work when, in his judgment, the findings of fact justify such an extension, and his findings of fact shall be final and conclusive on the parties hereto. (e) If, after notice of termination of the Contractor's right to proceed under the provisions of paragraph (a) of this clause, it is determined that the delay is excusable under the provi- sions of paragraph (d) of this clause, such notice of termina- tion shall be deemed to have beenissued pursuant to the clause of this contract entitled "Termination for Convenience of the Contracting Local Organization," and the rights and obligations of the parties hereto shall in such event be governed by such clause, (This paragraph (e) applies only if this contract con- tains such termination clause.) (f) The rights and remedies of the Contracting Local Or- ganization provided in this clause are in addition to any other rights and remedies provided by law or under this contract, 6. DISPUTES Any dispute arising under this contract which is not dis- posed of by agreement shall be decided by the Contracting Officer, Before making a decision the Contracting Officer shall afford the Contractor an opportunity to be heard and to present written evidence. The Contracting Officer shall reduce his decision to writing and mail or otherwise furnish a copy thereof to the Contractor, The decision of the Contracting Officer shall be final and conclusive. Pending final decision the Contractor shall proceed diligently with the performance of the contract, 7, PAYMENTS TO CONTRACTOR (a) The Contracting Local Organization will pay the con- tract price as hereinafter provided, (b) The Contracting Local Organization will make progress payments monthly as the work proceeds, or at more frequent intervals as determined by the Contracting Officer, on esti- mates approved by the Contracting Officer, If requested by the Contracting Officer, the Contractor shall furnish a breakdown of the total contract price showing the amount included therein for each principal category of the work, in such detail as requested, to provide a basis for determining progress pay- ments. In the preparation of estimates the Contracting Officer, at his discretion, may authorize material delivered on the site and preparatory work done to be taken into consideration. Material delivered to the Contractor at locations other than the site may also be taken into consideration (1) if such con- sideration is specifically authorized by the contract and (2) if the Contractor furnishes satisfactory evidence that he has acquired title to such material and that it will be utilized on the work covered by this contract, (c) In making such progress payments, there shall be retained 10 percent of the estimated amount until final com- pletion and acceptance of the contract work, However, if the Contracting Officer, at any time after 50 percent of the work has been completed, finds that satisfactory progress is being made, he may authorize any of the remaining progress pay- ments to be made in full. Also, whenever the work is sub- stantially complete, the Contracting Officer, if he considers the amount retained to be in excess of the amount adequate 2 for the protection of the .racting Local Organization, at his discretion, may release to the Contractor all or a portion of such excess amount, Furthermore, on completion and ac- ceptance of each separate building, public work, or other division of the contract, on which thepriceis stated separately in the contract, payment may be made therefor without reten- tion of a percentage, (d) All material and work covered by progress payments made shall thereupon become the sole property of the Con- tracting Local Organization, but this provision shall not be construed as relieving the Contractor from the sole respon- sibility for all material and work upon which payments have been made or the restoration of any damaged work, or as waiving the right of the Contracting Local Organization to require the fulfillment of all of the terms of the contract, (e) Upon completion and acceptance of allwork, the amount due the Contractor under this contract shall be paid upon the presentation of a properly executed voucher and after the Contractor shall have furnished the Contracting Local Organi- zation with a release, if required, of all claims against the Contracting Local Organization arising by virtue of this con- tract, other than claims in stated amounts as may be specifi- cally excepted by the Contractor from the operation of the release. If the Contractor's claim to amounts payable under the contract has been assigned, a release may also be required of the assignee at the option of the Contracting Officer, 8, MATERIAL AND WORKMANSHIP (a) Unless otherwise specifically provided in this contract, all equipment, material, and articles incorporated in the work covered by this contract are to be new and of the most suitable grade for the purpose intended, Unless otherwise specifically provided in this contract, reference to any equipment, material, article, or patented process, by trade name, make, or catalog number, shall be regarded as establishing astandard of quality and shall not be construed as limiting competition, and the Contractor may, at his option, use any equipment, material, article, or process which, in the judgment of the Contracting Officer, is equal to that named, The Contractor shall furnish to the Contracting Officer for his approval the name of the manufacturer, the model number, and other identifying data and information respecting the performance, capacity, nature, and rating of the machinery and mechanical and other equip- ment which the Contractor contemplates incorporating in the work. When required by this contract or when called for by the Contracting Officer, the Contractor shall furnish the Con- tracting Officer for approval full information concerning the material or articles which he contemplates incorporating in the work. When so directed, samples shall be submitted for approval at the Contractor's expense, with all shipping charges prepaid. Machinery, equipment, material, and articles installed or used without required approval shall be at the risk of subsequent rejection, (b) All work under this contract shall be performed in a skillful and workmanlike manner, The Contracting Officer may, in writing, require the Contractor to remove from the work any employee the Contracting Officer deems incompetent, careless, or otherwise objectionable. 9, INSPECTION AND ACCEPTANCE (a) Except as otherwise provided in this contract, inspec- tion and test by the Contracting Local Organization of mate- rial and workmanship required by this contract shall be made at reasonable times and at the site of the work, unless the Contracting Officer determines that such inspection or test of material which is to be incorporated in the work shall be made at the place of production, manufacture, or shipment of such material, To the extent specified by the Contracting Officer at the time of determining to make off -site inspection or test, such inspection or test shall be conclusive as to • Whether the material involved conforms to the contract re- quirements. Such off -site inspection or test shall not relieve the Contractor of responsibility for damage to or loss of the material prior to acceptance, nor in any way affect the con- tinuing rights of the Contracting Local Organization after acceptance of the completed work under the terms of para- graph (f) of this clause, except as hereinabove provided. (b) The Contractor shall, without charge, replace any material or correct any workmanship found by the Contracting Local Organization not to conform to the contract require- ments, unless in the public interest the Contracting Local Organization consents to accept such material or workmanship with an appropriate adjustment in contract price, The Con- tractor shall promptly segregate and remove rejected material from the premises. (c) If the Contractor does not promptly replace rejected material or correct rejected workmanship, the Contracting Local Organization (1) may, by contract or otherwise, replace such material or correct such workmanship and charge the cost thereof to the Contractor, or (2) may terminate the Contractor's right to proceed in accordance with Clause 5 of these General Provisions. (d) The Contractor shall furnish promptly, without addi- tional charge, all facilities, labor, and material reasonably needed for performing such safe and convenient inspection and test as may be required by the Contracting Officer. All inspection and test by the Contracting Local Organization shall be performed in such manner as not unnecessarily to delay the work. Special, full size, and performance tests shall be performed as described in this contract. The Contractor shall be charged with any additional cost of inspection when mate- rial and workmanship are not ready at the time specified by the Contractor for its inspection. (e) Should it be considered necessary or advisable by the Contracting Local Organization at any time before acceptance of the entire work to make an examination of work already completed, by removing or tearing out same, the Contractor shall, on request, promptly furnish all necessary facilities, labor, and material, If such work is found to be defective or nonconforming in any material respect, due to the fault of the Contractor or his subcontractors, he shall defray all. the expenses of such examination and of satisfactory reconstruc- tion. If, however, such work is found to meet the requirements of the contract, an equitable adjustment shall be made in the contract price to compensate the Contractor for the additional services involved in such examination and reconstruction and, if completion of the work has been delayed thereby, he shall, in addition, be granted a suitable extension of time, (f) Unless otherwise provided in this contract, acceptance by the Contracting Local Organization shall be made as promptly as practicable after completion and inspection of all work required by this contract, Acceptance shall be final and conclusive except as regards latent defects, fraud, or such gross mistakes as may amount to fraud, or as regards the Contracting Local Organization's rights under any warranty or guarantee, 10. SUPERINTENDENCE BY CONTRACTOR The Contractor shall give his personal superintendence to the work or have a competent foreman or superintendent, satisfactory to the Contracting Officer, on the work at all times during progress, with authority tD act for him. 11. PERMITS AND RESPONSIBILITIES The Contractor shall, without additional expense to the Contracting Local Organization, be responsible for obtaining any necessary licenses and permits, and for complying with any applicable Federal, State, and municipal laws, codes, and regulations, in connection with the prosecution of the work. He shall be similarly responsible for all damages to persons or property that occur as a result of his fault or negligence, He shall take proper safety and health precautions to protect the work, the workers, the public, and the property of others, He shall also be responsible for all materials delivered and work performed until completion and acceptance of the entire construction work, except for any completed unit of construc- tion thereof which theretofore may have been accepted, 12. CONDITIONS AFFECTING THE WORK The Contractor shall be responsible for havingtaken steps reasonably necessary to ascertain the nature and location of the work, and the general and local conditions which can affect the work or the cost thereof. Any failure by the Contractor to do so will not relieve him from responsibility for successfully performing the work without additional expense to the Con- tracting Local Organization. The Contracting Local Organi- zation assumes no responsibility for any understanding or representations concerning conditions made by any of its officers or agents prior to the execution of this contract, un- less such understanding or representations by the Contracting Local Organization are expressly stated in the contract, 13, OTHER CONTRACTS The Contracting Local Organization may undertake or award other contracts for additional work, and the Contractor shall fully cooperate with such other contractors and Contract- ing Local Organization employees and carefully fit his own work to such additional work as may be directed by the Con- tracting Officer. The Contractor shall not commit or permit any act which will interfere with the performance of work by any other contractor or by Contracting Local Organization employees. 14, PATENT INDEMNITY Except as otherwise provided, the Contractor agrees to indemnify the Contracting Local Organization and its officers, agents and employees against liability, including costs and expenses, for infringement upon any Letters Patent of the United States (except Letters Patent issued upon an application which is now or may hereafter be, for reasons of national security, ordered by the Government to be kept secret or otherwise withheld from issue) arising out of the performance of this contract, or out of the use or disposal by or for the account of the Contracting Local Organization of supplies furnished or construction work performed hereunder, 15. ADDITIONAL BOND SECURITY If any surety upon any bond furnished in connection with this contract becomes unacceptable to the Contracting Local Organization, or if any such surety fails to furnish reports as to his financial condition from time to time as requested by the Contracting Local Organization, the Contractor shall promptly furnish such additional security as may be required from time to time to protect the interests of the Contracting Local Organization and of persons supplying labor or materials in the prosecution of the work contemplated by this contract. 16. COVENANT AGAINST CONTINGENT FEES The Contractor warrants that no person or selling agency has been employed or retained to solicit or secure this con- tract upon an agreement or understanding for a commission, percentage, brokerage, or contingent fee, excepting bona fide employees or bona fide established commercial or selling agencies maintained by the Contractor for the purpose of securing business. For breach or violation of this warranty the Contracting Local Organization shall have the right to annul this contract without liability or in its discretion to deduct from the contract price or consideration, or otherwise recover, the full amount of such commission, percentage, brokerage, or contingent fee, 3 17. PAYROLL RECORDS AND PAYROLLS (a) Payroll records will be maintained during the course of the work and preserved for a period of three years there- after for all laborers and mechanics working at the site of the work. Such records will contain the name and address of each such employee, his correct classification, rate of pay, daily and weekly number of hours worked, deductions made, and actual wages paid. The Contractor will make his employ- ment records available for inspection by authorized repre- sentatives of the Contracting Officer and the U. S. Department of Labor, and will permit such representatives to interview employees during working hours on the job. (b) If requested by the Contracting Officer, a certified copy of all payrolls will be submitted weekly to the Contracting Officer. The Contracting Local Organization Prime Contractor will be responsible for the submission of certified copies of the payrolls of all subcontractors. The certification will af- firm that the payrolls are correct and complete, and that the classifications set forth for each laborer or mechanic conform to the work he performed. 18. COPELAND (ANTI -KICKBACK) ACT - NONREBATE OF WAGES The regulations of the Secretary of Labor applicable to Contractors and subcontractors (29 CFR, Part 3), made pur- suant to the Copeland Act, as amended (40 U.S.C.. 276c) and to aid in the enforcement of the Anti -Kickback Act (18 U.S.C. 874) are made a part of this contract by reference. The Con- tractor will comply with these regulations and any amendments or modifications thereof and the Contracting Local Organiza- tion Prime Contractor will be responsible for the submission of statements required of subcontractors thereunder. The foregoing shall apply except as the Secretary of Labor may specifically provide for reasonable limitations, variations, tolerances, and exceptions. 19. SUBCONTRACTS - TERMINATION The Contractor agrees to insert Clauses 17, 18, and 30 of these General Provisions in all subcontracts and further agrees that a breach of any of the requirements of these clauses may be grounds for termination of this contract. The term "Contractor" as used in such clauses in anysubcontract shall be deemed to refer to the subcontractor except in the phrase "Contracting Local Organization Prime Contractor." 20. LAND RIGHTS Adequate land rights needed (for work sites, borrow areas, and for trails and roadways for ingress and egress to the work sites) in order to perform the work under this contract, as far as can be determined, have been acquired. Should it develop that the land rights obtained are not, in the sole opinion of the Contracting Officer, adequate for prosecution of the work, necessary steps to correct any deficiency in the land rights as determined by the Contracting Officer shall be promptly taken. If the Contractor's operations are delayed thereby, the Contractor shall be entitled only to an equitable adjustment of performance time to cover the delay. The right to enter, re- move, or otherwise make use of adjacent property, roads, utility lines, fences, and other improvements not included within the land rights provided shall be the sole responsibility of the Contractor. Where the right of ingress and egress is not defined on the drawings, the Contracting Officer will designate the right- of-way to be used, 21, RECORDS OF TEST PITS AND BORINGS The Contracting Local Organization does not represent that the available records show completely the existing con- ditions and does not guarantee any interpretation of these records, The Contractor must assume all responsibility for 4 deductions and conclusions as to the nature of rock and other. materials to be excavated, the difficulties of making and main- taining the required excavations and of doing other work af- fected by the geology of the site of the work, and for the final preparation of the foundations for the spillway, dikes, and other structures. 22, MATERIALS TO BE FURNISHED BY THE CONTRACTOR Unless otherwise specified herein, or on the drawings, the Contractor shall furnish all materials required for the com- pletion of the contract. The cost of handling, storing, and hauling of all the materials required to be furnished by the Contractor shall be included in the unit price bid in the Bid Schedule for the work for which the materials are required. It shall be the Contractor's responsibility to require suppliers to furnish materials which meet the require- ments of the specification. Unless otherwise waived in writing by the Contracting Officer, the Contractor will be re- quired to furnish the Contracting Local Organization with certifications prepared and signed by the manufacturer and/or supplier to the effect that the items listed therein meet all requirements of the specifications. Such certifications must be dated and furnished prior to the use of the material in any part of the construction and should identify the project on which the material is to be used. 23, FENCES Existing fences to be removed by the Contractor are in- dicated on the drawings, The Contractor will not be required to replace or relocate such fences. Fences to be salvaged, as indicated on the drawings, will be removed and the materials salvaged by the Contractor for the landowner. Permanent fences to be constructed are indicated on the drawings and listed in the Bid Schedule, The Contractor shall bear all costs for the construction and removal of temporary fences which he requires during construction. 24. WATER The Contractor shall provide and maintain at his own ex- pense an adequate supply of water suitable for construction purposes. 25, ACCIDENT PREVENTION AND SAFETY MEASURES The Contractor shall comply with the accident prevention and safety measures recommended in the latest edition of the Manual of Accident Prevention in Construction published by the Associated General Contractors of America, Inc. The Contractor shall provide, erect, and maintain all necessary barricades, suitable and sufficient red lights, danger signals and signs, and shall take all necessary precautions for the protection of the work and the safety of the public, Roads closed to traffic shall be protected by effective barricades on which shall be placed acceptable warning and detour signs, All barricades and obstructions shall be illuminated at night, and all lights shall be kept burning from sunset until sunrise, The cost of all work required by this paragraph shall be re- flected in the unit prices bid for other items of construction work in the Bid Schedule, and the Contractor shall be entitled to no additional compensation by reason of the requirements of this paragraph, 26, SANITATION The Contractor shall furnish and maintain adequate sani- tary facilities and shall comply in every respect with laws and regulations applicable thereto, 27. HOURS OF WORK Unless otherwise shown in the Invitation for Bids, a work- week comprising five eight -hour days (Monday through Friday) was used as the basis for setting the performance time, The 'Contractor shall obtain prior approval of the Contracting Of- ficer to carry on work other than during the above work days and/or hours. (Special construction operations of short dura- tion which must be carried through to completion, such as pouring concrete, pumping, etc., are excluded from the above requirements.) 28, LIGHTING REQUIREMENTS Work carried on between the hours of sunset and sunrise shall be subject to the following regulations: Construction areas, including roads, excavation and fill areas, shall be adequately lighted to provide safe working conditions between the hours of sunset and sunrise while work is in progress, The lighting plan shall be acceptable to the Engineer, All temporary electrical installations shall comply with the safety requirements as outlined in the latest edition of the Manual of Accident Prevention of Construction published by the Associated General Contractors of America, Inc. All earth moving equipment, motor trucks, scrapers, tractors, etc., operated between sunset and sunrise shall be adequately equipped with head and tail lights. Equipment lights shall be maintained in good condition and kept clean. 29, CONSTRUCTION SCHEDULE Within ten days following the commencement of work, the Contractor shall submit a complete construction schedule satisfactory to the Contracting Officer, The schedule shall show the proposed order of work and indicate the time re- quired for completion of each item of work listed on the Bid Schedule, If at any time progress falls behind schedule and is inadequate to insure completion of the work within the time specified, the Contracting Officer shall have the right to re- quire the Contractor to submit a revised construction schedule providing for proper and timely completion of work. 30; SUBCONTRACTORS Work shall be sublet only upon approval of the Contracting Officer after having determined the acceptability of a proposed subcontractor. Prior to commencement of work by any subcontractor, the Contractor shall notify the Contracting Officer, in writing, of the name of the subcontractor proposed for the work and a description of the work to be done. Unless the Contracting Officer notifies the Contractor in writing within 10 days after receipt of such proposal, it will be presumed that the proposal meets the approval of the Contracting Officer and the subcon- tractor may proceed, Within 7 days after the award of any subcontract either by himself or a subcontractor, the Contractor shall deliver to the Contracting Officer a statement setting forth the name and address of the subcontractor and a summary description of the work subcontracted, The Contractor shall at the same time furnish a statement signed by the subcontractor acknowledging the inclusion in his subcontract of Clauses 17, 18 and 30 of these General Provisions, If at any time the Contracting Officer determines that any subcontractor is incompetent or undesirable, he shall notify the Contractor accordingly and the Contractor shall take im- mediate steps for cancellation of the subcontract. Subletting by subcontractors shall be subject to the same requirements. Nothing contained in this contract shall create any contractual relationship between any subcontractor and the Contracting Local Organization, (see Clause 19 of these General Provisions), 31, SURVEYS Staking Out of Work. Unless otherwise stated in the In- vitation for Bids, the work to be done will be staked out by the Contracting Local Organization. If the Contracting Local Organization does the staking, the Contractor shall notify the Contracting Officer in advance of any staking required in order that such work can be properly scheduled, Bench Marks. Bench marks shall be preserved by the Contractor, and in the case of their destruction or removal by him or his employees they will be replaced by the Con- tracting Local Organization at the Contractor's expense. Survey Stakes. Survey stakes destroyed or removed by the carelessness of the Contractor or his employees will be replaced by the Contracting Local Organization at the Con- tractor's expense, Stakes removed or destroyed in the due course of the work will be replaced by the Contracting Loral Organization without cost to the Contractor, Errors in Staking. If the Contractor, in the course of the work finds any errors or omissions in the layout as given by survey points or staking, he shall immediately inform the Contracting Officer in writing. 32. SUSPENSION OF WORK (a) The Contracting Officer may, when in the best interest of the Contracting Local Organization, order suspen- sion of all work or any part of the work, (b) When the Contracting Officer orders a suspension of work due to weather or effects of weather, the contract completion date will be extended a full calendar day for each calendar day during the period of suspension of work if: (1) Written suspend and resume work orders are issued; (2) All work is suspended (except minor items as listed in Note (f) to the Bid Schedule); and (3) The hours lost in any one calendar day through such suspensions equal } or more of the hours in an au- thorized work day. (c) Work suspended as indicated in Note (e) to the Bid Schedule shall be totally suspended except for work classed as minor items in Note (f) to the Bid Schedule, and work of an emergency, protective and maintenance nature for which no charge will be made against per- formance time, Written suspend and resume work orders shall be issued. The contract completion date will be extended by the number of calendar days lost as a result of such suspension. 33, CLEAN-UP WORK During construction the Contractor shall keep the site in an orderly condition, free and clear from all rubbish and debris, Care shall be taken to prevent spillage when hauling is being done on private or public roads and any such spillage or debris resulting from the Contractor's operations, shall be immediately cleaned up. Upon completion of the work the Contractor shall remove from the vicinity of the work, all plant, buildings, rubbish, unused materials, concrete forms and other like material belonging to him or used under his direction during the con- struction and in the event of his failure to do so, the same may be removed by the Contracting Local Organization at the expense of the Contractor. 34, QUANTITY VARIATIONS The quantities of work shown in the Bid Schedule are estimated. Overruns and underruns within 25 percent of the estimated quantity reflected in the Bid Schedule do not require or permit adjustment of contract unit prices or performance time, Overruns or underruns of more than 25 percent may be the basis for equitable adjustment in price and/or per- formance time. The contract shall be modified in writing to reflect new quantities, performance time, or price. Any price established hereunder shall apply to any additional overruns or underruns regardless of quantity. Any claim of the Con- tractor for adjustment for overruns or underruns must be 5 • 6 asserted in writing before the date of final payment under the contract, 35, LIQUIDATED DAMAGES If the work, or any part thereof, is not completed on or before the date fixed for its completion by the terms of the contract, or any extension thereof, the Contractor shall pay the Contracting Local Organization as fixed and agreed liqui- dated damages the sum set forth below for each calendar day of delay until the work is completed or accepted. Amount of Liquidated Original Contract Amount Damages per Day More than $ 2,000 and less than $ 25,000 $ 25,00 25,000 and less than 50,000 40,00 50,000 and less than 75,000 60.00 75,000 and less than 100,000 80,00 100,000 and less than 250,000 125.00 250,000 and less than 500,000 150,00 500,000 or more 175.00 36, ASSIGNMENT . , The Contractor shall not assign the contract or sublet it as a whole without the written consent of the Contracting Local Organization, The Contractor shall not assign any moneys due or to become due to him hereunder, without the prior consent of the Contracting Local Organization, 37. SPECIFICATIONS Copies of the Specifications for Construction and Con- struction Materials referred to herein, if not attached, may be secured from the Contracting Officer, Federal Specifications referred to herein may be pur- chased from the Business Service Center of the nearest Gen- eral Services Administration Regional Office or from the Superintendent of Documents, U. S. Government Printing Office, Washington 25, D. C. 38, FEDERAL, STATE, AND LOCAL TAXES Except as otherwise provided, contract unit prices include all applicable Federal, State, and Local taxes, STATE SOIL CONSERVATION BOARD c/o Soil Conservation Service 804 -- 21st Avenue Greeley, Colorado February 28, 1962 ADIENDUN NO. 1 TO INVITATION NO. 2 COALBANK CREEK SCHEDULED TO BE OPENED AT 1:00 P.r►., MST, MARCH 16, 1962, COVERING CONSTRUCTION OF ONE STABILIZATIOF STRUCTURE AND ONE BOX INLET DROP SPILLWAY AT SITES CB -2 and CB -3 IN COALBANK CR ( WATERSHED. 1. Prospective bidders are hereby advised of a change in quantity in Item 3 of the "Bid Schedule" and the addition of Item 11 to the "Bid Schedule" of the subject Invitation for Bids. These items will read as follows: Item Unit No. Item Unit Quantity Cost Amount 3. 4" dia. perforated fibre pipe Lin.Ft. 86 'p 1.00 $ 86.00 11. 4" dia. nonperforated �� $ 120.00 fibre pipe Lin.Ft. 24 $ • Quotations on these items should be made in the spaces provided above and should be included in the TOTAL BID on the Bid Schedule. If your bid has been placed in the mail or transmitted by other appropriate means, prior to the receipt of this notice, the prices quoted in this addendum will be con- sidered in evaluating your bid. 2. All other conditions of this Invitation for Bids remain the same. 3. Bidders must acknowledge receipt of this addendum. Acknowledgment must be shown in the spaces provided herein or on the bid form in the Invitation for Bids, and must be received before the time set for receiving bids, 1:00 P.M., MST, March 16, 1962. 4. FAILURE TO ACKNOWLEDGE RECEIPT OF THIS ADDENDUM WILL CAUSE REJECTION OF BID. Clarence H. Svedman Contracting Officer ACKNOWLEDGED: Bidder: R. A. Nielsen Construction Company By: S/Robert A. Nielsen Title: President BID SCHEDULE COALBANK CREEK WATERSHED Weld County, Colorado Stabilization Structure CB -2 and Box Inlet Drop Spillway CB -3 Item Unit No. Item Unit Quantity Cost Amount — 1. Removal of existing Job 1 ! 500.00 t 500.00 concrete structure 1.00 150600 2. Ii" dia. extra strength, Lin.Ft. 150 perforated, vitrified clay tile with bell and spigot joints 3. 4" dia. perforated fiber Lin.Ft. 110 ass A. #1 pipe 4. Graded Filter Material a. Site CB -2, graded Cu.Yd. 8 $ 15.00 $ 120.00 gravel b. Site CB -3, Fine Cu.Yd. 185 10.00 1.850.00 filter, gradation #1 c. Site CB -3, Coarse Cu.Yd. 13 ]00 182.00 filter, gradation #2 d. Site CB -3, Coarse Cu.Yd. 26 13.00 )38.QQ filter, gradation #3 5. Pit run sand and gravel Cu.Yd. 30 TAO 210.00 6. Steel bar reinforcement Lb. 26,500 0.20 _ 5,300.00 7. Concrete (Class B) Cu.Yd. 200 65.00 13.000.00 8. Compacted earth fill, Cu.Yd. 3,700 1.50 _ 5.550.00 Class B-2, in dikes and gully 9. Installation of 24" Job 1 200.00 200.00 dia. C.N. Pipe, 614 long 10. Common Excavation Cu.Yd. 100 1.00 100.00 TOTAL BID 1+06.00 (Gce fol l ow_i ng pnGc: ro:t• i'Jo I s on 111 ri .`',hccl»l ei acid ret 1'rn man(e Time) NOTES: (a) The quantities listed in the above bid schedule are estimates only. (b) The quantities of each item in the bid schedule, as finally ascertained at the close of the contract, will determine the total payments to accrue under the contract. (c) No bid will be considered unless all items in the bid schedule are priced, and only one contract will be awarded unless otherwise stated in the invitation. (d) The contract will be awarded on the total of the bid schedule. In case of error in extension of price, the unit price will govern. (e) It is expected that all work will be suspended for winter season from approximately December 1 to April 1. See Clause 32, General Provisions. (f) The following bid items are classed as minor items of work (see Clause 32, General Provisions): Item No. - None SPECIAL SPECIFICATIONS for Stabilization Structure CB -2 and Box Inlet Drop Spillway CB -3 Coalbank Creek Watershed Weld County, Colorado L -al The Construction Specifications and Material Specifications referred to in the Special Specifications are contained in the book of "Standard Specifi- cation, Construction end Construction Materials," issued by the Soil Conser- vation Service, Washington, D. C. L-218 COFFERDAMS, UPWAT3RING & PROTECTION OF WORKS AGAINST FLOODS It shall be the responsibility of the Contractor to take such steps as he considers necessary to protect the project work during construction from runoff after rains or continuous stream flow if such occurs. The size of the drainage area above the project is given on the plans. The Contractor shall keep the foundation free of water, silt, debris, or other deleterious matter. He shall furnish all material and furnish and operate all equipment required to provide protection. After having served their purpose, all protective works shall be removed. Construction of he protective works required to .protect the work duringconstruction shall be at the.expense of the. Contractor, as shall be the expense of furnishing and operating the equipment required. L=232 STRUCTURAL EXCAVATION 232.1 Scope The work covered by this specification consists of furnishing all labor, equipment and materials necessary to perform the structural excavation re- quired to construct the structures shown on the plans. For these specifica- tions structural excavation shall mean all excavation necessary to build the structure or structures in accordance with the plans and these specifications. 232.2 General - Strudtural Excavation All excavation shall be made in accordance with the lines and elevations shown on the plans and established by the Engineer. Care shall be taken not to excavate below the elevations indicated on the plans unless directed by the Engineer. Such excavations below grade not directed by the Engineer shall be corrected by placing either firmly compacted layers of earth near optimum moisture content or by placing a sub -floor of mass concrete, as re- quired, to provide a good foundation. The Fm gineer will determine the method to be used. Special care shall be taken not to disturb the bottom of the excavation after excavation to final grade has been made. The Contractor may make the width and length of the excavation for the structure any reasonable distance to enable him to proceed with his construc- tion plan, unless indicated otherrise on the plans. - 2 - Where unstable material is found during construction beneath the bottom of the structure, the unstable material shall be excavated as directed by the Engineer and the Contractor will be paid for this work as extra negotiated work in accordance with the contract. The space occupied by this unstable material shall be backfilled by spacing firmly compacted layers of selected earth in accordance with the specifications for the class of earth embank- ment specified for the embankment. The Contractor will be paid for this backfill at his unit contract price for the class of earth fill specified for the embankment. 232.3 'Parent for Struotiiral Exxavat3•oii The Contractor will not be paid for structural excavation as such. All structural excavation, including the cost of labor, equipment and material re- quired for it, shall be considered as a subsidiary obligation of the Con- tractor and the cost of this work shall be included in the contract unit prices for concrete, reinforcing steel, concrete or steel pipe lines of the principal spillway through the dam, as the case may be. L-234 COM (ON. EXCAVATION 1. General Common excavation shall be performed, measured and paid for in accordance with Construction Specification 14 58 - EXCAVATION except that excavated material from any of the required excavation deemed suitable by the Engineer, which is hauled and placed in the fill or embankment in one operation will not be paid for as common excavation but will be paid for at the contract unit price for the class of fill or embankment in which the material is placed. When the excavated material is too wet to obtain proper density in the fill using methods outlined in Construction Specification 5-58 - EARTH FILL, the Engineer may request the Contractor to stock -pile the material to dry out, if the material is later used in the fill, the Contractor will be paid both for common excavation and for fill or embankment. 2. Excavation Of Emergdnoy Spillway and Use of Top Soil When excavating the emergency spillway, all topsoil shall be stock- piled for use as top dressing on top of the excavated spillway where the soil at the bottom and on the side slopes of the excavation is unsuitable for growing grass or used for top dressing on the top and slopes of the embank- ment of the dam. '"here the soil at the side and bottom of the spillway ex- cavation is not suitable for growing grass, the spillway shall be over ex- cavated as called for on the plans. L -2J411 COePACT'SP EARTH FILL CLASS B-2 P1i1t.1 General Compacted earth fill Class B-2 shall comply with all the provisions of Construction Specifications 5-58 - EARTH FILL for this class of fill or em- bankment. 3 214.2 Compaction Equipment (1) Clay and fine silt material will be compacted with tamping rollers unless approved otherwise by the Engineer. The tamping roller shall be of the sheepsfoot type. The roller shall be capable of being weighted so that its total weight in pounds, divided by the total area of the maximum number of tamping feet in one row parallel to the axis of the roller, shall be not less than two hundred (200) pounds per square inch. The roller shall be pulled by a tractor of sufficient power at a maximum speed of three (3) miles per hour. (2) Coarse silt, sand and gravel material will be compacted by a vibra- tory roller or pneumatic roller approved by the Engineer. The vibratory or pneumaticroller shall be capable of producing a compactive effort equal to a weight of 200 pounds per square inch on the tamping feet of a sheepsfoot roller. 21.3 Moisture Control Moisture control shall be in accordance with paragraph 5.8.1 of Construc- tion Specification 5-58 - EARTH FILL except for the following modification: The optimum moisture content for each class of earth material to be used for embankment has been determined by the laboratory to be the percent of dry weight for standard Proctor compaction given in Table 1. In order to obtain the density required and the deformability of the embankment desired, the moisture content of each material shall be within the percentage of the dry weight shown in Table 1 unless approved otherwise by the Engineer. TAME 3. STRUCTURE DESCRIPTION UNIFIED OPTIMUM ALLOMABLE RANGE NUMBER OF SYSTMq MOISTURE OF MOISTURE MATERIAL CLASSIFICATION P: RCENT PERCENT I CB -2 Clayey Sand . SC 11.5 CB- 2 Clay 10-114 CL 14.5 12.5-16 CB -3 Sandy Clay CL 15.5 13-18 The Contractor will not be paid for water or for sprinkling the fill ma- terial to obtain proper moisture content as the cost of this work shall be included in the contract price per cubic yard for that class of fill. 2)44.4 Compaotion Compaction of the fill shall be in accordance with paragraph 5.9.2 of Construction Specification 5-58 - EARTH FILL. The optimum dry weight of each class of material for standard Proctor com- paction has been determined by laboratory methods to he the weight given in Table 2. The minimum acceptable density for each class of material is also given in Table 2. The minimum acceptable density is 95 percent of the dry weight for optimum density. TABL 2 i STRUCTURE DESCRIPTION UNIFIED OPTIMUM I!i1NI14JM 1 NUMBER OF SYSTEM DRY WEIGHT ACCEPTABLE DENSITY MATERIAL CLASSIFICATION PO CU. FT. PER. CET. FT. CB -2 Clayey Sand SC 118 112 CB -2 Clay - CL 108 _ 103 CB -3 Sandy Clay CL 109.5 104 21x!}.5 Measurement and Payment Measurement and payment for compacted earth fill will be made in accord- ance with paragraph 5.10 of Construction Specification 5-58 - EARTH FILL. L -2L16 BACKFILLING AROUND FTRUCTURRS All spaces excavated and not occupied by the structure shall be back - filled with earth up to the surface of the surrounding ground, with suffi- cient allowance for settlement as determined by the Engineer. This backfill shall be of the class of earth fill as the fill to which it is adjacent and comply with all provisions of Construction Specifications 5-58 - EARTH FILL except "Measurement and Payment." The Contractor will not be paid for backfill around struotures up to the surface of the original ground. The cost of this work is considered inci- dental to the concrete work and should be included in the unit contract price for concrete. The yardage of all embankment above the level of the original surrounding ground surface will be included in the measurement for payment of the class of fill specified or the class of fill to which it is adjacent. L-260 CONCRETE The concrete shall be of the class indicated on the plan and in the bid schedule and shall meet all the requirements of Construction Specification 8A-58 - CONCRETE except for the following modifications: (1) In paragraph 8A.10 "Placing" change the sentence starting on the third line of sub -paragraph 8A:10.1 "General" (which reads "Concrete shall be placed within 1 1/2 hours after the introduction of the water to the cement - S - and aggregates") to read as follows: "Concrete shall be placed within 1 1/2 hours after the introduction of mixing water to the cement and aggregates. In hot weather or under conditions contributing to quick stiffening of the concrete, a time less than 1 1/2 hours may be specified by the Engineer." (2) In states, except Wyoming, the first two (2) paragraphs of 8A.5 "Strength Tests" shall be eliminated and the following substituted therefore: Test for Compressive Strength of Concrete When making concrete pours of more than ten (10) cubic yards or during smaller pours when requested by the Engineer, the Contractor shall make a minimum of three (3) standard cylindrical test specimens six (6) inches in diameter by twelve (12) inches in length under the supervision of the Engineer. On continuous pours in excess of ten (10) cubic yards, an additional test specimen may be required for each additional ten (10) cubic yards. The con- crete compression test specimens for checking the strength shall be made and cured in accordance with the following specifications: A.S.T.M. Designation C-31, "Standard Method of Making and Curing Concrete Compression and Flexure Test Specimens in the Field," except that the specimens shall be handled and cured in the manner described in paragraph 7C of 0-31. A.S.T.M. Designation C-172, Standard Method of Sampling Fresh Concrete. The Contractor shall have one (1) concrete specimen tested at the age of seven (7) days by a competent testing laboratory in accordance with the following specifications: A.S.T.M. Designation 0-39, Standard Method of Test for Compressive Strength of Molded Concrete Cylinders. The Contractor shall furnish the Engineer a copy of the laboratory test report within ten (10) days after the date the concrete sample was taken. If the seven (7) day test result does not give a strength equal to seventy (70) percent of the twenty-eight (28) day age strength required by the concrete specification, the second test specimen shall also be tested at the age of seven days. One specimen will be tested at the age of twenty-eight (28) days by a competent testing laboratory in accordance with specification A.S.T.M. Designation 0-39, and the Contractor shall furnish a report to the Engineer within thirty-three (33) days after the specimen was taken. If the seven day test shows ample strength, the Engineer may have the Contractbr omit the 28 day test. The Contractor will not be paid for making and testing the concrete specimens. The cost of this work and the tests shall be included in the unit contract price per cubic yard for the concrete work involved in the contract. - 6 - 260.2 ',xpansion and Contraction Joints (1) General 'xpansion or contraction joints shall be in accordance with paragraph 8A.12 of Construction Specification 8A-58 - C0'TCR,T^. When called for on the plans, smooth steel shear dowel bars will extend through the expansion joint. An expansion sleeve shall be provided on one end of each dowel bar. The sleeve shall be metal of an approved type, crimped or capped on one end, and provide a minimum of three (3) inch length of covering of the dowel bar with a minimum of three-quarters (3/1}) of an inch expansion chamber beyond the end of the dowel bar. The portion of the dowel bar on the expansion sleeve side of the joint shall be coated to prevent bond between the bar and the concrete. The dowel bars shall be securely held in place by use of metal dowel chairs at each intersection of a dowel bar and spacer bar. The dowel bars shall be installed on proper horizontal and longitudinal alignment to assure a workable expansion device. The premolded joint filler at these ex- pansion joints shall be held in a true vertical plane by means of a header board. The header board shall remain in place for a minimum of thirty (30) minutes after the concrete has been placed on one side or until the concrete has set sufficiently to prevent sloughing, before the header is removed and the work of placing concrete continued. (2) Fxpansion Joint Filler At all expansion joints shown on the plans, a premolded joint filler of the thickness specified, shall be provided to prevent bond between, and allow for the expansion and contraction of adjacent parts. The filler material shall be of sufficient length and width, and shall be accurately cut, matched and placed to prevent contact of the concrete in the parts of the structure to be separated. Premolded joint material shall conform to the latest revision of A.S.T.'2. Designation D -5L4)4 "Preformed ';xpansion Joint Fillers for Concrete, Non -Extruding and Resilient Types" or to the latest revision of A.S.T.M. Designation D -99t "Preformed Expansion Joint Filler for Concrete, Bituminous Type." (3) Asphalt Treated Roofing Felt Two layers of heavy, smooth surface asphalt treated roofing felt, approximate weight 55 pounds per 100 square feet, shall be placed at expan- sion joints, as shown on the plans. (L4) waterstops 1Naterstops when shown on the plans, shall be installed in accordance with sub -paragraph 8A.12.3 "Waterstops" of Construction Specification 8A-58 - CONCRETE and the materials shall meet the requirement of Construction Material Specification 107-58 - '"'ATF,RSTOPS. (5) Payment Payment for labor, materials except dowel bars and equipment required to do the work specified in paragraph 260.2 - "Expansion and Contraction -7 260.2 Continued Joints" of this specification shall be included in the contract price for cubic yard for the class of concrete involved. The dowel bars are included in the reinforcing steel quantity. 260.3 Measurement and Payment Measurement and payment shall be in accordance with Construction Speci- fication 8A-58 - CONCRETE 260.4 Type of Portland Cement The Portland cement shall meet the requirements of ASTM Designation 0-150 for Type II cement and Astm Designation C-175 for Type IIA air -entrained Portland Cement. L_261i - ST?h'C. REINFORCEMENT 264.1 Material Reinforcing steel shall comply with the requirements of Construction Material Specification 103-58 - STEEL REINFORCEMENT. 26!4.2 Placing The placing of reinforcing steel shall meet all requirements of Con- struction Specification 9-58 - PLACING STEEL REINF0RC7,3MENT. 2(1.3 Measurement and Payment measurement and payment shall be in accordance with paragraph 9.8 "Measurement and Payment" of Construction Specification 9-58. 8 ADDITIONAT, SP W AL SP ,'CI FI CATI0NS 1. S T HY CTTJ R' ; DRAINS A. Scope The work covered in this specification consists of furnishing- all labor, equipment and material and performing all operations in connection with the excavation, laying perforated and non -perforated fiber pipe to- gether with making the necessary connections, laying perforated clay tile, placinr the filter material, placing- the animal guard screens, placing the hardware cloth, and making the required earth backfill. B. Material 1. Perforated Fiber Pipe. The physical characteristics of the per- forated'ffber p pe and f!tting:s shall be similar or equal to the per- forated fiber pipe as manufactured by the Fiber Conduit Company, 0ranmeburg, Y. Y. The perforations shall be two (2) rows of one-half (1/2) inch holes on four (L) inch centers approximately 120 degrees apart. 2. Nonperforated Fiber Pipe. The physical characteristics of the nonperforatod fiber pipe -and fittings shall be similar or equal to the perforated fiber pipe specified in paragraph 1B (1) above without the perforations. 3. Perforated Flay Tile. The physical characteristics of the per- forated clay pipe sliai7: meet Construction Specification 111-58 - Clay Pipe, paragraph 111-5 "extra -Strength Clay Pipe." The perforations shall be four (1) rows of one-half (1/2) inch holes on three (3) inch centers approximately f0 dec=rees apart. I!. Filter material. The graded filter material as shorn on the plans sha1� donform toTe following requirements as to size and gradations. " Grade Stabili zetion Structure CB -2 Sieve Size 2" 1" 1 =''10 )'20 Percent Passing Percent Retained 100 85-100 67-85 37-6a 12-38 0-15 0 0 0-15 15-33 39-63 62-88 85-100 100 9 Box Inlet Drop Spillway CB -3 Fine Filter - Gradation 4'1 Sieve Size 3/8" 5:4 //ID „ 20 x'30 f50 x'100 112200 Percent Passing 100 94-100 73-93 3):-73 18-63 5-14 0-26 0-5 Coarse Filter - Gradation f2 Sieve Size Percent Retained 0 0-6 7-27 27-66 37-82 56-95 71r-100 95 -too Percent Passing Percent Retained 3" 100 0 2" 95-100 0-5 1" 85-97 3-15 3/4" 70-93 7-30 3/8" 36-73 27-64 -4 7-45 55-93 '10 0-l0 90 -loo "20 0-5 95-100 Coarse Filter - Gradation "3 Sieve Size Percent Passing Percent Retained 3" 2" 1" 3/4" 1/2" 3/8" x'10 f20 9"100 X200 loo 94 -too 85-93 79-90 72-85 66-81 53-73 29-63 7-52 0-34 0-20 0-10 0 0-6 7-15 10-21 15-28 19-34 27-b7 37-71 18-93 66 -too 80-100 90-100 Crushed stone shall not be used as filter material. The pit -run sand and gravel as shown on the plans for Box Drop Inlet Spillway CB -3 shall be a pit -run sand gravel mixture of fine and coarse material having not more than 5 percent of its material passing a "200 sieve. 5. The small animal guard screens shall fulfill the requirements as shown on the plans. -10- 6. Hardware Cloth. 3ach piece of hardware cloth shall be one foot square of £our by four (1xL) hardware cloth (sixteen square open- ings to the square inch) manufactured vith twenty-three (23) gage galvanized wire. D. Installation The area for the drains shall be excavated to the lines, grades and cross -sections as shown on the plans. The pipe shall be laid to the lines and grade as shown on the plans. The lateral line shall be placed over the outlet line. Snap couplings shall be used to connect the sections of perforated fiber pipe. The clay pipe shall have bell and spigot joints with the bells upstream. The upstream end of each pipe shall be plugged. A guard screen shall be provided at the outlet end of each fiber pipe as shown on the plans. A piece of hardware cloth shall be placed between the filter material and the outside concrete wall at each weep hole. Each clay pipe outlet shall have a piece of hardware cloth placed between the end of the pipe and the sand and gravel material. E. Measurement and Payment The unit of measurement for the sand and gravel filter material for the drains shall be the cubic yard of this material measured in place. Payment will be made at the contract price per cubic yard for "Graded Filter Material" and for "Pit Run Sand and Gravel." Such payment shall include the cost of all materials and excavation as well as the placement. The unit of measurement for the pipe in the drains shall be linear feet and tenths thereof of pipe measured along the centerline of the pipe in place. Such measurement will include the lengths of nonperforated pipe in the cross -fittings. Payment will be made at the contract price per lineal foot for "14 inch diameter Perforated Fiber Pipe" and for "4 inch --diameter Nonperferated Fiber Pipe" and for "4 inch diameter Extra Strength, Perforated, Vitrified Clay Tile with Bell and Spigot Joints," which payment shall be full compensation for the pipe and fittings and all labor, equipment and materials necessary to install the drain pipes as shown on the plans. No payment will be made for the animal guard screens and end plugs as the cost of these items shall be included in the contract price for the pipe. No payment will he made for the hardware cloth as the cost of this item shall be included in the contract price for the filter material. II. WAT ERSTOP A. Scope The work covered by this specification consists of furnishing all labor, equipment and material and performing all operations in connection with the installation of the waterstop as shown on the plans or as directed by the Engineer. B. Materials The waterstop shall conform to the requirements of Construction Specification 107-58 - Waterstops. C. Installation The waterstop shall be placed as shown on the plans and in accord- ance with paragraph 8A.12.3 of ':onstruction Specification 8A-58 - Concrete. D. Payment No payment will be made for waterstops as such. The cost of over- head, labor, materials and equipment to do the work shall be inoluded in the contract price per cubic yard for "Concrete (Class B)." III. CORRUGATED METAL PIPE ^0NWIT The installation of the corrueated metal pipe shall be in accordance with Construction Specification 12-58 - Pipe Conduits -Corrugated "metal. The Con- tractor will be paid for this work at his lump sum contract price. Hello