181-26 Exhibit A- Final Specifications_compressed.pdf

vation completed without the supervision of the Engineer or the Engineer’s representative will not be considered for payment. HELEN AVE., LAWRENCE AVE., FLORENCE PL., AND LOWELL AVE., IMPROVEMENTS PROJECT Page 38 of 76

DIVISION 300 – SUBBASE AND BASE COURSES SECTION 302 – AGGREGATE BASE COURSE 302.01 DESCRIPTION THE FOLLOWING IS ADDED: Select Fill shall be used on an as needed and as directed basis to bring subbase areas to grade and/or to replace unsuitable material encountered during the installation of applicable utilities. 302.02 MATERIALS THE FOLLOWING IS ADDED: Select Fill shall be defined as I-10 material. 302.04 MEASUREMENTS AND PAYMENT THE FOLLOWING ITEMS ARE ADDED: Item Pay Unit SELECT FILL (IF AND WHERE DIRECTED) CUBIC YARD DENSE-GRADED AGGREGATE BASE COURSE, 6” THICK SQUARE YARD HELEN AVE., LAWRENCE AVE., FLORENCE PL., AND LOWELL AVE., IMPROVEMENTS PROJECT Page 39 of 76

DIVISION 400 – PAVEMENTS SECTION 401 – HOT MIX ASPHALT (HMA) COURSES 401.02.01 Materials THE FIRST ITEM IS CHANGED TO: Tack Coat 64-22, PG 64S-22 ......................................................................................................................... 902.01.01 401.03.01 Milling THE FOLLOWING IS ADDED: It shall be the CONTRACTOR’S responsibility to dispose of milled material, not re-used within the project limits. Milled materials shall be disposed of at a New Jersey Class “B” recycling facility. Documentation from the approved disposal facility showing the weight of material removed shall be provided to the municipality within 15 days of acceptance by the disposal facility. A. HMA Milling. THE LAST PARAGRAPH IS CHANGED TO: The time interval between milling of pavement and resurfacing shall not exceed 72 hours. Shorter time interval requirements shall be as directed by the RE based upon field conditions and provided that the conditions do not deteriorate the pavement or impact the safety of the public. At no time shall the roadway pavement be left in a milled state over a weekend. 401.03.03 HMA Pavement Repair THE TITLE AND ENTIRE SUBSECTION IS CHANGED TO: 401.03.03 HMA Repair A. HMA Pavement Repair. Arrange a project site meeting with the RE to establish the limits of HMA pavement repair. Additional repairs, not delineated on the Plans or by the RE during the project site meeting, may be required if the need is established by the RE. If potholes are discovered, notify the RE immediately. The RE may immediately direct repairs of small areas. The RE may require further evaluation of a large area to determine the need for additional milling and paving. Perform HMA repairs as a separate operation before milling, paving, and other surface treatments. The Contractor may request approval of the RE to perform the repair work as one operation with the paving or surface treatment. HMA repairs may be performed on full depth HMA pavement or on composite pavement (HMA over concrete pavement). For full depth HMA pavement, sawcut existing HMA pavement to a depth of 8 inches. For composite pavement, sawcut existing HMA to a depth of 8 inches or up to the top of concrete, whichever is less. Sawcut lines parallel and perpendicular to the roadway baseline and 3

hes. For composite pavement, sawcut existing HMA to a depth of 8 inches or up to the top of concrete, whichever is less. Sawcut lines parallel and perpendicular to the roadway baseline and 3 inches away, at the closest point, from the damaged area to be repaired. Remove damaged and loose material within the boundary of the sawcuts to form rectangular openings with vertical sides to a depth of 8 inches for HMA pavement, or to the top of concrete for composite pavement. A milling machine may be used to remove damaged pavement to form the repair areas if approved by the RE. After the existing damaged HMA and loose material has been removed, the RE will examine underlying material to determine its condition. HELEN AVE., LAWRENCE AVE., FLORENCE PL., AND LOWELL AVE., IMPROVEMENTS PROJECT Page 40 of 76

If the base of the repair area is unbound material, then shape and compact the unbound material to produce a firm and level base. If water exists in the area, remove the underlying material to the depth as directed by the RE. Place geotextile, then place and compact coarse aggregate to required grade to provide for a minimum 8 inch thick HMA pavement repair. Compact coarse aggregate as specified in 203.03.02.B.3. If the base of the repair is HMA or concrete pavement, then ensure that the remaining pavement is cleaned and dry prior to applying tack coat. Apply tack coat at an application rate of 0.15 gallons per square yard to the vertical surfaces and base of the opening. Spread and grade HMA surface course mix in the opening as specified for the roadway surface or a HMA surface course mix approved by the RE. Ensure that the temperature of the HMA when placed is at least 250 °F, and compact as specified in 401.03.07.F. Compact areas not accessible to rollers with a flat face compactor. Compact until the top of the patch is flush with, or 1/8 inch higher than, the adjacent pavement surface. Reuse removed material as specified in 202.03.03.C.1. B. HMA Longitudinal Joint Repair. Arrange a project site meeting with the RE to establish the limits of HMA longitudinal repair areas. Additional repairs, not delineated on the Plans or by the RE during the project site meeting, may be required if the need is established by the RE. Mill 2 feet wide, unless directed otherwise by the RE, centered over the HMA longitudinal joint, rumble strip, longitudinal distress areas or any combination of the three, as shown on the Plans and as directed by the RE. Mill to a minimum 2 inches in depth, or as required to remove the damaged pavement. For distress areas wider than 4 feet, the RE may direct the use of HMA pavement repair as specified in 401.03.03.A. Clean the milled area as specified in 401.03.01.A. Obtain RE approval of the repair area before proceeding with the repair. Apply polymerized joint adhesive to the vertical surfaces of the repair area as specified in 401.03.04. Apply tack coat as specified in 401.03.05 at an application rate of 0.15 gallons per square yard to the bottom surface of the repair area. Obtain RE approval of the repair area before

03.04. Apply tack coat as specified in 401.03.05 at an application rate of 0.15 gallons per square yard to the bottom surface of the repair area. Obtain RE approval of the repair area before proceeding with the repair. Spread and grade Hot Mix Asphalt 12.5M64 Surface Course in the repair area as specified in 401.03.07.E. Ensure that the temperature of the HMA when placed and compacted is at least 250 ºF. Compact as specified in 401.03.07.F, ensuring that the top of the compacted HMA is flush with, or not greater than 1/8 inch higher than, the adjacent pavement surface. Reuse removed material as specified in 202.03.03.C.1. 401.03.05 Tack Coat THE FOLLOWING IS ADDED AFTER THE FOURTH PARAGRAPH: The Department will perform verification testing of tack coat application rate according to ASTM D2995, Option A, within the first 300 feet of each paving operation for each lane of paving, except that only one pad assembly will be used for the transverse application rate and the longitudinal application rate will not be verified. Prior to tack coat application, allow the RE access to set geotextile pads for the initial verification test. After passing over the pads with the tack distributor, allow the RE time to perform the verification test and calculation. If the application rate is determined to be outside the rate specified in Table 401.03.05-1, stop the tack coat and paving operations, make the required adjustments to achieve a proper application rate, and allow the RE to perform an additional verification test within the next 300 feet. Allow the RE to perform additional tests until the correct application rate is achieved. Retack areas that are insufficiently coated. The frequency of testing may be increased based on a visual inspection or at the discretion of the RE. 401.03.07 HMA Courses A. Paving Plan. PART (4) IS CHANGED TO: 4. Lighting plan for night operations as specified in 108.06. C. Test Strip HELEN AVE., LAWRENCE AVE., FLORENCE PL., AND LOWELL AVE., IMPROVEMENTS PROJECT Page 41 of 76

REPLACE THE FIRST PARAGRAPH OF THIS SECTION WITH THE FOLLOWING: Test Strip. Construct a test strip for each HMA mix for contracts with more than a total of 5,500 tons of HMA. For HMA HIGH RAP, construct the test strip at least 14 days prior to production. Test strips are not necessary for temporary pavement. Ensure that the tack coat or prime coat has been placed as specified in 401.03.05 and 401.03.06, before placing HMA. Transport and deliver, spread and grade, and compact as specified in 401.03.07.D, 401.03.07.E, and 401.03.07.F, respectively, and according to the approved paving plan. Construct a test strip for the first 700 to 1,200 square yards placed for each job mix formula. If the paving lot area is less than 700 square yards, the District Local Aid Office may waive the coring requirements. While constructing the test strip, record the following information and submit to the RE: D. Transportation and Delivery of HMA. THE SECOND SENTENCE OF THE FIRST PARAGRAPH IS CHANGED TO: Do not allow trucks to leave the plant within 1 hour of sunset unless lighting for night operations is provided as specified in 108.06. THE SECOND PARAGRAPH IS CHANGED TO: Ensure that weigh tickets are signed and sealed by a certified weighmaster. Individual weigh tickets do not need to be signed and sealed if using an automated batching plant or automated drum plant. THE FOURTH PARAGRAPH IS CHANGED TO: When using an automated batching plant, obtain weigh tickets from the printer used in conjunction with an automated batching and mixing system. Ensure the printed ticket shows the individual weights of the various components of the HMA in a batch, the total weight of each batch, and the sum of all batch weights in the truckload. If using an automated batching plant or automated drum plant, at the completion of each day’s work, provide certification from the weighmaster that the total net weight supplied was correct. E. Spreading and Grading. G. Opening to Traffic. THE FOLLOWING IS ADDED AFTER THE LAST PARAGRAPH: Ensure that RPMs are installed and rumble strips are constructed within 14 days of opening each day’s surface paving to traffic. H. Air Void Requirements FOR LOCAL AID PROJECTS, THIS SUBSECTION IS REPLACED BY THE FOLLOWING. Pavement lots are defined as approximately 15,000 square yards of pavement in

paving to traffic. H. Air Void Requirements FOR LOCAL AID PROJECTS, THIS SUBSECTION IS REPLACED BY THE FOLLOWING. Pavement lots are defined as approximately 15,000 square yards of pavement in Surface area. If pavement lot area is less than 5000 square yards, the Local Aid District Office may waive the air voids requirements. The RE will designate an independent testing agency (Laboratory) to perform the quality assurance sampling, testing and analysis. The Laboratory is required to be accredited by the AASHTO Accreditation Program (www.amrl.net). The Laboratory’s accreditation must include AASHTO T 166 and AASHTO T 209. The Laboratory Technician who performs the quality assurance sampling shall be certified by the Society of Asphalt Technologists of New Jersey as an Asphalt Plant Technologist, Level 2. The Laboratory will determine air voids from 5 (Five) 6 inch diameter cores taken from each lot in random locations within the traveled way and at least one core in each travel lane. The HMA Core Sampling Plan form provided on the Local Aid Website must be utilized by the Laboratory to determine the random locations of the cores. The Laboratory may rerun the random location functions on the HMA Core Sampling Plan form to resolve any conflicts generated by the HMA Core Sampling Plan form and physical limitations of the HMA lot, such as utility conflicts, or the specifications HELEN AVE., LAWRENCE AVE., FLORENCE PL., AND LOWELL AVE., IMPROVEMENTS PROJECT Page 42 of 76

defined herein. The coring locations must be designated by a station and offset, and offsets are taken from the left edge of the pavement in the direction of travel within the lane lines. The Laboratory must disclose the contents of the HMA Core Sampling Plan with the Contractor to assist in the schedule of construction. The Laboratory will determine air voids of cores from the values for the maximum specific gravity of the mix and the bulk specific gravity of the core. The Laboratory will determine the maximum specific gravity of the mix according to NJDOT B-3 and AASHTO T 209, except that minimum sample size may be waived in order to use a 6-inch diameter core sample. The Laboratory will determine the bulk specific gravity of the compacted mixture by testing each core according to AASHTO T 166. The Laboratory will calculate the percent defective (PD) as the percentage of the lot outside the acceptable range of 2 percent air voids to 8 percent air voids. The acceptable quality limit is 15 percent defective. For lots in which PD > 15, the Department will assess a negative pay adjustment. The Laboratory will use and submit to the RE the DS8S-PD form provided on the Local Aid Website and verify manually the PD calculation. The Laboratory will calculate pay adjustments based on the following: 1. Sample Mean (X̅) and Standard Deviation (S) of the N Test Results (X1, X2,…, XN). 2. Quality Index (Q). 3. Percent Defective (PD). Using NJDOT ST for the appropriate sample size, the Laboratory will determine PDL and PDU associated with QL and QU, respectively. PD = PDL + PDU 4. Reduction Per Lot. Calculate the reduction per lot as specified in Table 401.03.07-3: Table 401.03.07-3 Reduction in Payment for Nonconformance to Air Void Requirements HELEN AVE., LAWRENCE AVE., FLORENCE PL., AND LOWELL AVE., IMPROVEMENTS PROJECT Page 43 of 76

Percent Defective (PD) Per Lot Reduction Per Lot (%) 0 < PD ≤ 15 0 15 < PD ≤ 30 0.5 30 < PD ≤ 35 2 35 < PD ≤ 40 10 40 < PD ≤ 45 15 45 < PD ≤ 50 20 50 < PD ≤ 60 30 60 < PD ≤ 75 45 PD > 75 Remove & Replace 5. Outlier Detection. If PD < 10, the Laboratory will not screen for outliers. If PD ≥ 10, the Laboratory will screen acceptance cores for outliers using a statistically valid procedure. The following procedure applies only for a sample size of 5 or 10. 1. The Laboratory will arrange the core results in ascending order, in which X1 represents the smallest value and XN represents the largest value. 2. If XN is suspected of being an outlier, the Laboratory will calculate: 3. If X1 is suspected of being an outlier, the Laboratory will calculate: 4. For N = 5 if R > 0.642, the value is judged to be statistically significant and the core is excluded. For N = 10 if R > 0.412, the value is judged to be statistically significant and the core is excluded. If an outlier is detected for N = 5 and no retest is warranted, the Contractor may replace that core by taking an additional core at the same offset and within 5 feet of the original station. If an outlier is detected and a retest is justified, take a replacement core for the outlier at the same time as the 5 additional retest cores are taken. If the outlier replacement core is not taken within 15 days, the Laboratory will use the initial core results to determine reduction per lot. If an outlier is detected for N = 10, the Contractor may replace that core by taking an additional core at the same