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Home My WebLink About19-21-C TALLEY OIL INC CCO 1.pdfCOUNTY OF FRESNO CONSTRUCTION MANAGEMENT CONTRACT CHANGE ORDER BITUMINOUS SEAL COATS CHANGE ORDER NO. 1 VARIOUS LOCATIONS IN FRESNO COUNTY MAY 26, 2020 CONTRACT NO. 19-21-C PAGE 1 OF 5 TO: TALLEY OIL INC: Make the following changes to the plans and specifications or do the following work not included in the plans and specifications for this contract. Because of the change(s), ZERO WORKING DAYS will be added to the contract time. PART I: MODIFY SPECIAL PROVISIONS SECTION 37 Add before section 37-4.03 in the Special Provisions: 37-4 FOG SEALS AND FLUSH COATS 37-4.01 GENERAL 37-4.01A General 37-4.01A(1) Summary Section 37-4.01 includes general specifications for applying fog seals and flush coats. 37-4.01A(2) Definitions Reserved 37-4.01A(3) Submittals At least 15 days before use, submit: 1. Sample of asphaltic emulsion in two 1-quart plastic container with lined, sealed lid 2. Asphaltic emulsion information and test data as follows: 2.1. Supplier 2.2. Type/Grade of asphalt emulsion 2.3. Copy of the specified test results for asphaltic emulsion 37-4.01B Materials Not Used 37-4.01C Construction 37-4.01C(1) General Reserved 37-4.01C(2) Weather Conditions Only place a fog seal or flush coat if both the pavement and ambient temperatures are at least 50 degrees F and rising. Do not place a fog seal or flush coat within 24 hours of rain or within 24 hours of forecast rain or freezing temperatures. 37-4.01D Payment Not Used COUNTY OF FRESNO CONSTRUCTION MANAGEMENT CONTRACT CHANGE ORDER BITUMINOUS SEAL COATS CHANGE ORDER NO. 1 VARIOUS LOCATIONS IN FRESNO COUNTY MAY 26, 2020 CONTRACT NO. 19-21-C PAGE 2 OF 5 37-4.02 FOG SEALS 37-4.02A General 37-4.02A(1) Summary Section 37-4.02 includes specifications for applying fog seals. Applying a fog seal includes applying a diluted slow-setting or quick setting asphaltic emulsion. 37-4.02A(2) Definitions Reserved 37-4.02A(3) Submittals Immediately after sampling, submit two 1-quart plastic container of asphaltic emulsion taken in the presence of the Engineer. Samples must be submitted in insulated shipping container. 37-4.02A(4) Quality Assurance 37-4.02A(4)(a) General Reserved 37-4.02A(4)(b) Quality Control 37-4.02A(4)(b)(i) General Reserved 37-4.02A(4)(b)(ii) Asphaltic Emulsions Circulate asphaltic emulsions in the distributor truck before sampling. Take samples from the distributor truck at mid load or from a sampling tap or thief. Before taking samples, draw and dispose of 1 gallon. In the presence of the Engineer, take asphalt emulsion sample in two 1-quart plastic containers with lined, sealed lid. For asphaltic emulsions, the authorized laboratory must perform quality control sampling and testing at the specified frequency and location for the following quality characteristics: COUNTY OF FRESNO CONSTRUCTION MANAGEMENT CONTRACT CHANGE ORDER BITUMINOUS SEAL COATS CHANGE ORDER NO. 1 VARIOUS LOCATIONS IN FRESNO COUNTY MAY 26, 2020 CONTRACT NO. 19-21-C PAGE 3 OF 5 Asphaltic Emulsion Quality characteristic Test Method Minimum sampling and testing frequency Sampling location Saybolt Furol Viscosity, at 25 oC (Saybolt Furol seconds) AASHTO T 59 Minimum 1 per day per delivery truck Distributor truck Sieve Test (%) Storage stability, 1 day (%) Residue by distillation (%) Particle chargea Tests on Residue from Distillation Test: Penetration, 25 oC AASHTO T 49 Minimum 1 per day per delivery truck Distributor truck Ductility AASHTO T 51 Solubility in tricloroethylene AASHTO T 44 aIf the result of the particle charge is inconclusive, the asphaltic emulsion must be tested for pH under ASTM E70. Grade QS1h asphaltic emulsion must have a minimum pH of 7.3. Grade CQS1h asphaltic emulsion must have a maximum pH of 6.7. 37-4.02A(4)(b)(iii) Asphaltic Emulsion Spread Rates For fog seals, the authorized laboratory must perform sampling and testing at the specified frequency and location for the following quality characteristics: Fog Seal Quality Control Requirements Quality characteristic Test method Minimum sampling and testing frequency Location of sampling Asphaltic emulsion spread rate (gal/sq yd) California Test 339 2 per day Pavement surface 37-4.02A(4)(c) Department Acceptance Fog seal acceptance is based on: 1. Visual inspection for the following: 1.1. Uniform surface texture throughout the work limits 1.2. Flushing consisting of the occurrence of a film of asphaltic material on the surface 1.4 Streaking consisting of alternating longitudinal bands of asphaltic emulsion approximately parallel with the lane line 2. The Department's sampling and testing for compliance with the requirements for the quality characteristics specified in section 94 for asphaltic emulsion 3. Department's sampling and testing for compliance with the requirements for fog seal shown in the following table: COUNTY OF FRESNO CONSTRUCTION MANAGEMENT CONTRACT CHANGE ORDER BITUMINOUS SEAL COATS CHANGE ORDER NO. 1 VARIOUS LOCATIONS IN FRESNO COUNTY MAY 26, 2020 CONTRACT NO. 19-21-C PAGE 4 OF 5 Fog Seal Acceptance Criteria Quality Characteristic Test Method Requirement Asphaltic emulsion spread rate (gal/sq yd) California Test 339 TV ± 10% 37-4.02B Materials You determine the grade of slow-setting or quick setting asphaltic emulsion to be used. 37-4.02C Construction Apply asphaltic emulsions for fog seals at a residual asphalt rate from 0.02 to 0.06 gal/sq yd. If additional water is added to the asphaltic emulsions, the resultant mixture must not be more than 1-part asphaltic emulsion to 1 part water. You determine the dilution rate. If the fog seals become tacky, sprinkle water as required. If fog seals and chip seals are on the same project, the joint between the seal coats must be neat and uniform. 37-4.02D Payment The Department does not adjust the unit price for an increase or decrease in the asphaltic emulsion quantity. TOTAL COST PART I: $0.00 (NO COST) TOTAL TIME EXTENSION PART I: ZERO WORKING DAYS PART II: PROVIDE QUALITY CONTROL TESTING FOR ASPHALT EMULSION FOR FOG SEAL EXTRA WORK In accordance with Section 4-1.05, Ch Standard Specifications, provide quality control testing for fog seal emulsion in accordance with Section 37-4.02 of Change Order #1. This work will be paid as extra work by specialist billing in accordance with Section 9-1.05 of the Standard Specifications . The estimated unit price for this testing is $918.50 per sample with 10 samples for the project, an estimated total of $9,185.00. The payment includes compensation for all sample delivery charges; all labor, equipment, and tools necessary for sampling and storing samples; all overhead costs; incidental costs; delay costs if any; and markups for this change. The testing does not affect the controlling activity. No time adjustment is warranted. TOTAL COST PART II: A $9,185 INCREASE TOTAL TIME EXTENSION PART II: ZERO WORKING DAYS NET COST THIS CHANGE ORDER: $9,185 INCREASE NET TIME EXTENSION THIS CHANGE ORDER: ZERO WORKING DAYS COUNTY OF FRESNO CONSTRUCTION MANAGEMENT CONTRACT CHANGE ORDER BITUMINOUS SEAL COATS CHANGE ORDER NO. 1 VARIOUS LOCATIONS IN FRESNO COUNTY MAY 26, 2020 CONTRACT NO. 19-21-C PAGE 5 OF 5 JAMES DREWS, Resident Engineer APPROVAL RECOMMENDED: TALLEY OIL INC. Contractor STEVE DEIS, Construction Engineer By: STEVEN E. WHITE, Director of Public Works Title: and Planning Accepted Date: Date: