Attachment_B_-_St._of_Ca_Bid_Specification-5610-4896.pdf

State of California Bid Specification

Sand & Cinders De-Icing Department of Transportation (DOT)

5610-4896 56-10

Attachment B

Lai, Y Page 1 of 6 Feb. 18, 2020

Document Summary Detail Type Detail Event ID 0000013965 Commodity Sand & Cinders De-Icing Attachment 2 Group-Class 56-10 Bid Specification 5610-4896 Revision Level Original Revision Date February 18, 2020 Agency Name Department of Transportation (DOT) Location Multiple

Revision History Bid Spec

Rev Level

Revision Date

Author Summary of Changes

5610-1329R2 Original May 20, 2015 Ahmed, M. First Bid Development 5610-4896 Original Feb. 18, 2020 Lai, Y Bid Development, added type H

Sand & Cinders De-Icing Department of Transportation (DOT)

5610-4896 56-10

Attachment B

Lai, Y Page 2 of 6 Feb. 18, 2020

Table of Contents Document Summary Revision History Table of Contents

1.0 SCOPE

2.0 APPLICABLE LAWS and INDUSTRY STANDARDS

2.1 LAWS and REGULATIONS

2.2 INDUSTRY STANDARDS

3.0 TECHNICAL REQUIREMENTS

3.1 SAND AND CINDERS REQUIREMENTS:

Sand & Cinders De-Icing Department of Transportation (DOT)

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1.0 SCOPE

Different types of de-icing material are required in different locations because of varying road conditions, weather, and environmental considerations. This specification establishes the minimum requirements for eight types of sand & cinders specification, A, A1, A2, B, C, D, G, and H.

2.0 APPLICABLE LAWS and INDUSTRY STANDARDS

Specifications, standards and codes referenced in this document in effect on the opening of the ‘Invitation for Bid’, form a part of this specification.

2.1 LAWS and REGULATIONS

2.1.1 NONE

2.2 INDUSTRY STANDARDS

2.2.1 California Test 125 - Method for Sampling Highway Materials and

Products Used in the Roadway Structural Sections

2.2.2 California Test 202 – Method of Tests for Sieve Analysis of Fine and

Coarse Aggregates.

2.2.3 California Test 217 – Method of Test for Sand Equivalent.

2.2.4 California Test 226 – Method for Determining Moisture Content by Oven

Drying.

2.2.5 California Test 229 – Method of Test for Durability Index.

2.2.6 Attachment A in the specification – Method of Test for Turbidity Analysis of Traction Abrasives.

3.0 TECHNICAL REQUIREMENTS

3.1 SAND AND CINDERS REQUIREMENTS:

3.1.1 Must meet the specifications requirements in Table 1 below.

3.1.2 Total moisture content shall be measured per CTM 226.

a) Specification G applies to the locations below:

Truckee, Castle Peak, Floriston, Kingvale, Tahoe City, Gold Run, 20/80 Jct., Whitmore, Sierraville, Downieville, Gold Lakes, Nevada City, Auburn, Grey Bar, Camino, Riverton, Kyburz, Echo Summit, S. Lake Tahoe, Placerville, Chico-Forest Ranch, Willows, Chico MS

b) All locations in Specification G shall have moisture content ≤5% except the following locations accept moisture content of ≤ 10%:

Grey Bar, Camino, Riverton, Placerville, Chico-Forest Ranch, Willows, and Chico MS.

Sand & Cinders De-Icing Department of Transportation (DOT)

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c) For these locations (Grey Bar, Camino, Riverton, Kyburz, Echo Summit, South Lake Tahoe, and Placerville) per Specification G, sand shall not be the color black or dark gray when material is wet or dry.

3.1.3 Must not contain frozen lumps larger than one (1) inch in size.

3.1.4 Must be suitable for de-icing highway.

3.1.5 A certificate of compliance to the specification is to be provided for each day’s delivery, regardless of the number of deliveries that occur that day.

3.1.6 For specification H, the maximum turbidity produced by the sand shall be 200 Nephelometric Turbidity Units (NTUs) as measured using the Method of Test for Turbidity Analysis of Traction Abrasives (See Attachment A).

Table 1:

Speci-fication

Sieve Size 1

Percentage Passing

Minimum Sand Equivalent

Minimum Durability Index 3

Total Moisture Content 4

Weight per cubic foot

A - Sand 3/8" #4 #8 #200

100% 90-100% 35-87% 0-5%

70 55 ≤ 5% N/A

A1 - Sand 3/8" #8 #50 #200

100% 35-87% 10-30% 0-10%

75 55 ≤ 5% N/A

A2 - Sand 3/8" #8 #50 #200

100% 35-87% 0-30% 0-5%

75 55 ≤ 5% N/A

B - Sand 3/8" #4 #200

100% 90-100% 0-5%

70 55 ≤ 5% N/A

C - Cinders

3/4" 3/8" #4 #200

100% 85-100% 40-65% 0-5%

N/A N/A ≤ 5% 40-70 Pounds

Sand & Cinders De-Icing Department of Transportation (DOT)

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Attachment B

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Speci-fication

Sieve Size 1

Percentage Passing

Minimum Sand Equivalent

Minimum Durability Index 3

Total Moisture Content 4

Weight per cubic foot

D - Cinders

1/2" 3/8" #4 #8 #16 #200

100% 90-100% 5-30% 0-10% 0-5% 0-2%

N/A N/A ≤ 5% 40-70 Pounds

D - Cinders 5

1/2" 3/8" #4 #8 #16 #200

100% 90-100% 5-85% 0-65% 0-55% 0-15%

N/A N/A ≤ 5% 40-70 Pounds

G - Sand

1/4" #8 #16 #50 #200

100% 48-80% 15-70% 0-20% 0-3%

75 55 ≤ 5% 7

≤ 10% 8

N/A

H - Sand 3/8" 1/4" #8 #16 #50 #200

100% 97-100% 40-60% 10-30% 0-5% 0-1%

80 55 < 5% N/A

Note:

1 Per CTM 202 2 Per CTM 217 3 Per CTM 229 4 Per CTM 226 5 Cinder sources in the Clearlake area 6 Specification G applies to the locations on Section 3.1.2 a)

Sand & Cinders De-Icing Department of Transportation (DOT)

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7 Moisture content ≤5% applies to Specification G locations: Truckee, Castle Peak, Floriston, Kingvale, Tahoe City, Gold Run, 20/80 Jct., Whitmore, Sierraville, Downieville, Gold Lakes, Nevada City, Auburn, Kyburz, Echo Summit, and S.

Lake Tahoe

8 Moisture content ≤10% applies to Specification G locations on Section 3.1.2 b)

Attachment A

Method of Test for Turbidity Analysis of Traction Abrasives

A. Scope

The Turbidity Analysis of Traction Abrasives test method has been developed to aid Caltrans in reducing the amount of fine sediment particle (FSP) in traction abrasives used in the Lake Tahoe Basin by providing a means to field test abrasives samples taken from aggregate stockpiles. The method provides an indication of the fine sediment particle (FSP) (< 16 microns in diameter) content of aggregate materials such as those used for traction abrasives on roadways during winter driving conditions.

This procedure describes a method of preparing dry traction abrasives samples for turbidity measurements by mixing the material with water to suspend the FSP.

Turbidity measurements may be performed using a portable turbidimeter in field situations or by standard methods, such as EPA Method 180.1, in an analytical laboratory.

B. Apparatus

The following equipment is required to perform this test:

1. A 1.5-2.0 L minimum size glass or plastic container with lid.

2. An analytical balance or scale accurate to 0.01 g

3. Portable turbidimeter accurate to 0.1 NTUs (field test only)

C. Materials

Use distilled or deionized water for the normal performance of this test. If it is determined that normal tap water is of such quality that it does not affect the test results, it is permissible to use it in lieu of distilled or deionized water.

D. Control

The temperature of the water should be maintained at 20 ± 2˚C during the performance of this test.

E. Sample Preparation

1. Obtain a representative sample of the material to be tested. Stockpile sampling of aggregates should be conducted according to the procedures in California Test 125 Part G.

2. Using the analytical balance or scale, create quantities of aggregate and water in a ratio of 1:20 by mass (e.g. 50 g aggregate and 1000 g of water).

Note: The 1:20 ratio was selected because it produces turbidities that are readily measurable by most portable turbidimeters without requiring dilutions, and that are not near the lower end of their typical range of accuracy.

3. Combine the aggregate and water in the sample container. Gently invert the container 25 times at a rate of 1 inversion per second, to break up material and suspend fines. Do not agitate vigorously or entrain air bubbles in the solution.

4. Allow the mixture to soak for 10 minutes and then repeat the 25 inversions, again being careful not to entrain air bubbles.

5. Allow the mixture to sit for 30 seconds then, using the pipette, withdraw an adequate volume of solution for the turbidity measurement. Withdraw the sample from the center of the container approximately one-inch below the surface.

6. Obtain the turbidity measurement of the sample following the procedures specified by the manufacturer of the specific turbidimeter being used.

7. Repeat the above procedure three times and calculate an average value from the three measurements.

F. Quality Assurance Procedures

1. Turbidimeter Verification of Accuracy and Calibration:

a. Follow the manufacturer’s instructions to perform all recommended maintenance procedures and verify that the instrument is accurate to the specified limits for the measurement range of interest.

b. If necessary, calibrate the instrument per the manufacturer’s instructions using calibration standards appropriate for the measurement range of interest.

c. Document all verification and calibration procedures and measurements and include with the reported test results.

G. Troubleshooting

1. Consult the instrument manufacturer for additional guidance if the suggestions below do not remedy the problem.

2. For erratic readings:

a. Check voltage of the batteries and replace if needed.

b. There may be bubbles in the system: tap the sample chamber system to dislodge bubbles.

3. For unusually high or low turbidity readings:

a. See 2b: Bubbles

b. There may be fouling of optical surfaces: clean with a lint-free cloth or toothbrush.

4. If readings at first appear stable and then begin to increase inexplicably:

a. Check for moisture condensation on the cell wall

b. Wipe cell dry with a soft, lint-free cloth.

c. Apply a thin veneer of silicon oil (if compliant with manufacturer’s instructions).

5. If blank samples or calibration standards do not read accurately:

a. Check that the cells are oriented as instructed.

b. Check the age/expiration of the calibration solutions.

c. Check the accuracy against another instrument.

Method of Test for Turbidity Analysis of Traction Abrasives (remove ASTM D422) (004)