WPC  2QB$R ZCourierw RomanCourierCourier BoldCourier Italic@`7@HP LaserJet 4HPLAS4.PRS 4dp@sQ\#n@wA6AX`AT`T`TA``66`6````AI6````T\&\hA2hXAAA2AAAAAAAA`6TTTTT}TwTwTwTwTA6A6A6A6``````````T`^```k`TTTTTTTywTwTwTwT````````A6A6A6A6kI`w6wMw6wAw6`q````AAAkIkIkIkIwQw6w6```````wTwTwT`w6`AkIw6``y``2``@#@WddddddddddddddddddddddddddddddddddddddddNEssEX`AT`````6=`:=`:AATT`BBs``uEssErkkAT`:"`soh`kss`!|dBoldHPLAS4.PRS 4?f\  P6G;\#n?P2+rZ  X` hp x (#%'0*,.8135@8:, P age,  s5  F ooter, B , E dit. Delete the "Project Name (ftr B)" text and replace  s5 it with the name of the project (bolded) . , until you arrive at the document text.(# D.The Guide Specifications are being reviewed and revised. Your technical comments on any guide spec would be greatly appreciated.(#  s5  DRAWING DATA REQUIRED: None  s4  REVISIONS OF THIS SECTION:  r5  CSI format, editorial changes: 9/97 Metric: Technical Update: 9/97 z0*(( yXM s4 #d `7#`@(#PEXPLOSIVES Project Name (ftr B)`(#(#Z .02302   b-SECTION 02302 .EXPLOSIVES PART 1: GENERAL 1.1SUMMARY(# A.Section Includes: Work which relates to explosives including receiving, handling, transporting, storing, distributing, priming, loading, firing, and disposing.(# B.Related Sections:(# ************************************************** DELETE EITHER 01009 OR 01010. EITHER SECTION 01300 OR 01410 MUST BE USED WHEN 01010 IS USED. ************************************************** General Information and Requirements(#`(#MSection 01009 Summary of Work(#`(#MSection 01010 1.2DEFINITIONS(# A.Blaster in Charge (BIC): One competent, experienced person shall be specifically designated as BlasterinCharge (BIC); the BIC shall be in charge of explosives and blasting operations. (# B.Explosives and Initiating Devices: Explosives and initiating devices include, but are not limited to, dynamite and other explosives, slurries, water gels, emulsions, blasting agents, initiating explosives, detonators, and detonating cord.(# 1.3SUBMITTALS(# A.Blasting Plan: [Within 15 days of Notice to Proceed,] [and at least 48 hours prior to drilling,] submit three copies of the Two-Part Blasting Plan in accordance with section 01300, Submittals, before bringing any explosives and initiating devices to the jobsite. Obtain written approval before beginning blasting. The blasting plan is for quality control and record keeping purposes. The review of the blasting plan does not relieve the Contractor of the responsibility for using existing drilling and blasting technology and for obtaining the required results in a safe manner.(# 1.` ` Part 1: Include in Part 1 of the blasting plan a complete summary of proposed transportation, handling, storage, safety precautions, and use of explosives and initiating devices, and include the name of the Blaster in Charge (BIC), who will supervise and be responsible for blasting operations, written evidence of past experience and competency, and a minimum of three references for that person.(#` 2.` ` Part 2: Shall contain the general concept for the blasting. As a minimum, Part 2 of the blasting plan shall contain the following:(#` ` ` a.@ @ Typical plan and section view of the drill pattern for controlled blast holes, and production blast holes as necessary. Indicate stations or coordinates for the areas to be shot and number of holes. Show the free face, burden, hole diameters, depths, spacings, inclinations, and depth of subdrilling if any.(#@ %0*s's'Ԍ` ` b.@ @ Individual blast hole loading pattern diagram for each type of shot anticipated showing:(#@ ` ` @ @ 1. !Location of each hole.(# ` ` @ @ 2. !Maximum dimensions for width, length, and depth of shot.(# ` ` @ @ 3. !Amount of each type of explosive in each hole including primer and initiators.(# ` ` @ @ 4. !Location, type, and depth of stemming.(# ` ` c.@ @ Initiation and delay methods, delay times, and overall power factor.(#@ ` ` d.@ @ Manufacturer's data sheets for all explosives and initiating devices.(#@ ` ` e.@ @ Controls of noise, dust, fly rock, airblast, and vibrations.(#@ ` ` f.@ @ Data necessary to support the adequacy of the Contractor's proposed efforts regarding the safety of structures and slopes.(#@ ` ` g.@ @ Information on test blasts [planned by the Contractor or] required by the Government.(#@ B.Permits: Submit copies or other proof of all applicable permits and licenses.(# C.Drilling Log: Once drilling begins, a drill log shall be recorded and submitted to the Contracting Officer at the end of each day of drilling. The drill log shall show location, pattern, number, spacing, inclination, diameter, hole depth, and subsurface material different than that shown on the blasting plan.(# D.Blasting Log: Record and submit to the Contracting Officer at the end of each day a blasting log showing:(# 1.` ` Actual measurements of the shot including blast hole depths, diameter, burden, spacing, subdrilling, stemming, power loads, time of each delay, type of initiators, and time of blast.(#` 2.` ` Drawing or sketch showing the direction of the face, or faces, and the physical shot layout.(#` ***************************************************** DELETE BELOW IF GOVT IS MONITORING THE BLASTS. ***************************************************** E.Records: Submit the records of the seismic and vibration monitoring.(# F.Certification: Submit evidence that the BIC has a valid State blaster's license or other license issued by an equivalent licensing body for the type of blasting required. The certification shall be dated within the last two years.(# G.Special Request: Also, submit any other data which the Government may deem pertinent to the Government's determination of the Contractor's intent and purpose to produce smooth and sound rock surfaces at the lines of excavation, and to protect adjacent structures.(# 81.4QUALITY ASSURANCE(# ***************************************************** WHEN BLASTING IS OF A CRITICAL NATURE SUCH AS WITHIN 300 FT OF BUILDINGS, OR WHEN THE APPEARANCE OF A ROCK FACE IS IMPORTANT TO THE JOB, THE CONTRACTING OFFICER MAY WANT TO APPROVE THE BLASTER IN CHARGE ON THE JOB BY REVIEWING HIS CREDENTIALS. SELECT APPLICABLE WORDING. ***************************************************** A.Certification: 8The BIC shall have a valid permit for the type of blasting required according to NFPA 495, Chapter2, and local codes. [The designated person shall submit a resume detailing work}&0*s's' experience, blasting experience, and references relating to the person's blasting experience.] The BIC shall exercise careful supervision of work related to the use, storage, and handling of explosives and initiating devices. Permit only a minimum number of competent, experienced persons, consistent with efficient operation, to handle explosives and initiating devices. Anyone demonstrating carelessness, incompetence, or inexperience shall be excluded from further handling of explosives and initiating devices.(# B.Permits: Obtain required permits and comply with applicable Federal, State and local laws and regulations pertaining to the use, storage, and handling of explosives and initiating devices. In the event of inconsistencies between these specifications and the laws and regulations, the laws and regulations take precedence, subject to final determination by the Contracting Officer. Precise reds, available for inspection by the Contracting Officer at anytime, shall be kept on the inventory of explosives and initiating devices. Reds shall indicate, as a minimum, daily uses and balances.(# (# 1.5DELIVERY, HANDLING, AND STORAGE(# A.Authority: The BIC shall also indicate who shall be the authorized persons designated to assist with loading and handling of explosives and initiating devices. (# B.Regulations: Comply with Federal, State, and local regulations and National Codes on the purchase, transportation, storage, and use of explosive material. Federal regulations and National Codes include but are not limited to the following:(# 1.` ` Storage, security, and accountability: Bureau of Alcohol, Tobacco, and Firearms (BATF): 27 CFR Part 181.(#` 2.` ` Shipment: DOT, 49 CFR Parts 171179, 390397.(#` 3.` ` Safety and Health: OSHA 29 CFR Part 1926, Subpart U.(#` 4.` ` Transportation and Storage: NFPA 495, Chapters 3 through 6.(#` 1.6SCHEDULING(# A.Requirements: Schedule blasting between the hours of [____] and [____], and only on [____] days.(# PART 2: PRODUCTS  2.1MATERIALS(# A.Explosives and Initiating Devices: Use only those explosives and initiating devices less than 1 year old, and that are produced by a nationally recognized manufacturer. (# 2.2EQUIPMENT(# A.General: Equipment shall be of sufficient size and capacity to provide a hole of the depth and diameter needed to accommodate explosives being used.(# !0*s's'ԌZPART 3: EXECUTION 3.1PREPARATION(# A.Examination: Perform a preblast survey to determine and document with pictures the condition of adjacent structures, utilities, wells, buried cables, and other features within 450 m (1500 ft) of the blast area. Determine safe distances to structures or other facilities according to NFPA 495, Appendix B. Where facilities are closer than these distances, and natural barriers are not present, or when the amount of explosive cannot be reduced economically, blasting mats shall be used. In environmentally sensitive areas, mats shall be used to protect trees 6 m (20 feet) from the blasting area, streams, or rock formations from throw rock.(# B.Preparation: Provide security, notification of adjacent owners, warning signs, guard, clearances, and other protective measures and procedures necessary to this project.(# C.Protection: Protect existing features and facilities from damage, movement or gasinduced pressures. Make proper use of blasting mats and other protective devices, Zadopting additional precautions necessary to prevent damage to trees, shrubs, and other landscape features [; buildings, utilities, monuments, and other structures.] Should damage occur, make restoration as required by the Contracting Officer.(# (# D.Test Blasting: Drill, blast, and excavate one or more short test sections as proposed in the blasting plan before fullscale drilling and blasting. Test blasts may be made away from or at the final slope line.(# 1.` ` Space blast holes for controlled blasting 760 mm (30 inches) apart for the initial test blast. Adjust the spacing as approved. Use the approved spacing in the fullscale blasting or subsequent test blasts if necessary.(#` 2.` ` When a test blast is determined to be unacceptable, revise the blasting plan and make an additional test blast. A test blast is unacceptable when it results in fragmentation beyond the final rock face, fly rock, vibration, air blast, overbreak, damage to the final rock face, or is a violation of other requirements.(#` 3.2BLASTING(# A.Procedures: Drill and blast according to the approved blasting plan to enable excavation to line, grades, and cross-sections [indicated on the drawings] [as staked]. Control the blasting adjacent to [dams and appurtenant structures] [buildings and] facilities susceptible to vibration or air blast damage. Employ blasting techniques described in the blasting plan as approved by the BIC and Contracting Officer.(# 1.` ` Use controlled blasting techniques for all perimeter surfaces when blasting to final grades or lines. Drill perimeter blastholes following the lines of the final excavation and do not deviate more than 150 mm (6 inches) from their designed location in any direction along the length of the hole. Reduce depths of blastholes if necessary to conform to this requirement.(#` 2.` ` For all controlled blasts, the technique, perimeter hole spacing, and loading density may vary depending on formation competency. Actual techniques, loading densities, and spacing are subject to the approval of the BIC. The BIC may require a change in the%0*s's' controlled blasting technique, perimeter hole spacing, and/or loading density if unsatisfactory results are obtained.(#` 3.` ` Do not use blasthole diameters larger than 75 mm (3 inches).(#` 4.` ` Blast rock remaining on the site or used in fill shall be fragmented to sizes less than 0.75 cubic meter ([1/2] [1] cubic yard). [Blasted rock used in fill shall be fragmented to sizes less than 150 mm (6 inches) at its largest dimension according to Section 02315 Excavation and Fill and Section 02224 Excavating, Backfilling, and Compacting for Structures.] Reduction of rock fragments greater than 0.75 cubic meter ([1/2] [1] cubic yard) shall be accomplished by mechanical means or blasting at no additional cost to the Government.(#` 5.` ` At no time shall a blast be permitted that overloads holes with explosives so that the blasting forces totally evacuate the material being blasted.(#` 6.` ` Cap and fuse initiation shall not be allowed.(#` 7.` ` Electric detonators, delays, and caps shall not be allowed if stray electric current exists near the blast area, as determined by the BIC.(#` 8.` ` Delay blasting methods shall be used on shots consisting of two or more rows of holes. Each delay shall initiate one blast.(#` 9.` ` Record activities on drilling and blasting logs.(#` B.Explosive Weights: In no blast shall the total amount of explosives used exceed [1,000] lb of TNT equivalent. The weight of explosive used per blast shall not exceed the amount that can be detonated within an 8 millisecond period obtained by the following formula:(#  r5D W = (D/60)2(# ` ` W =@ @ Weight of explosive in equivalent-pounds of TNT(#@ ` ` D =@ @ Distance in feet to nearest structure or project perimeter, whichever is less(#@ 3.3FIELD QUALITY CONTROL(# A.Inspection: The BIC shall inspect an excavation following the blast and cleanup to determine acceptability. Immediately adjust procedures to prevent damage and accomplish project objectives.(# ***************************************************** WHEN SEISMIC EFFECT IS A CONCERN ON THE PROJECT SUCH AS SENSITIVE STRUCTURES, DAMS, OR EMBANKMENTS, THE BLASTING EFFECT SHOULD BE DESIGNED TO MINIMIZE THE SEISMIC EFFECT. DECIDE IF GOVT WILL MONITOR BLASTS. EDIT PARAS B & C BELOW FOR CONFLICTING STATEMENTS. ***************************************************** B.Seismic Monitoring by Government: The Government will perform monitoring of each blast using blasting seismographs and airblast monitors. The equipment characteristics and calibrations will be made available to the Contractor upon request. The results of monitoring of individual shots will be made available to the Contractor within 24hours of the blast upon request. The Contractor may, at the Contractor's own expense, monitor blasts using the Contractor's own equipment as a check. C.Seismic Monitoring by Contractor: Monitor the blast vibrations with calibrated seismographs containing internal calibration and triaxial orthogonal transducers having a flat frequency response from 2 to 200 hertz. Make available to the Contracting Officer and the BIC a realtime, directreadout, tamperproof, permanent record seismograph recording or seismogram of the vibration measurements before the next blast holes are drilled. The BIC shall analyze these records or duplicate copies to determine whether the resultant vibration measurements exceed the allowable peak particle velocity at a specified location.(# 1.` ` Do not use less than two[, nor more than [___]] vibration monitoring locations for any individual blast. (#` 2.` ` Place the transducers in designated locations or structures, or both, as directed by the BIC. For blasts located [________], locate transducers [________], or as directed by the Contracting Officer. Securely fasten the transducers to the ground surface or structure being monitored by use of stakes, epoxy, or bolting where blast accelerations are expected to exceed 0.3 g as determined from the following equation:(#` ` ` a = (v)(f)/61.5(#` ` ` @ @ a = !the acceleration in g's(# ` ` @ @ v = !the velocity in inches per second(# ` ` @ @ f = !the predominant frequency of the blast determined from the direct readout record of ground vibrations in cycles per second.(# D.Vibration Limits: Vibration limits are based on instrumentation with a flat frequency response from 2 to 200 hertz. For Government-owned concrete or steel structures, the maximum peak particle velocity shall not exceed 100 mm (4 inches) per second measured in any one component on the ground surface adjacent to the structure. (# 1.` ` For non-Government-owned structures, the maximum vibration permitted shall not exceed the values given in the following table:(#` T ddx ! ddx  @@ T  /  Z vMAXIMUM VIBRATION PERMITTED AT NON-GOVERNMENT-OWNED STRUCTURES/ $ @ H  Structure Type" Vibration frequencies cycles/secondJ$ Maximum vibration permitted inches/second$ @ H ! Residence: up to 10 years old, with wallboard walls& below 40 above 40& 0.75 2.0 &0*s's'  $ Residence: older, with plaster walls below 40 above 40 0.5 2.0 }  Historically Significant: Precarious condition Sound conditionS S  0.2 0.5} ?   Industrial  2.0?  S 2.` ` The peak airblast levels measured adjacent to non-Government-owned structures, or any Government-owned structures deemed appropriate by the BIC shall not exceed 133 decibels utilizing instruments with a flat frequency response from 2 to 200 hertz.(#` E.Clearance Requirements: Do not use electricaltype blasting system within 500 feet of energized lines or equipment. Do not use freeflowing blasting agents within 12 feet of existing structures.(#  PART 4: MEASUREMENT AND PAYMENT ***************************************************** WHEN A "LUMP SUM" CONTRACT IS USED, DELETE THE TITLE PART 4: MEASUREMENT AND PAYMENT, AND BOTH ARTICLES FROM THIS SECTION. MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PART 4 OF SECTION 01009 GENERAL INFORMATION AND REQUIREMENTS OR SECTION 01010 SUMMARY OF WORK. ***************************************************** 4.1METHOD OF MEASUREMENT(# A.Units: The work described in this section will not be measured for payment.(#  4.2BASIS OF PAYMENT(# A.Payment: No direct payment for the work described under this section will be made. Consideration for this item shall be included in the bid price for other items of the Contract.(# 0,END OF SECTION