Agenda

the No. 200 sieve; no stone greater than two-third (2/3) loose lift thickness, or
six inches, whichever is smaller.

2. Select Backfill:

Select backfill shall be granular, well graded friable soil, free of rubbish, ice,
snow, tree stumps, roots, clay and organic matter, and other deleterious or
organic material; graded within the following limits:

Sieve Size Percent Finer by Weight
3” 100
No. 10 30 - 95
No. 40 10-70
No. 200 0-10

H. SPECIAL PIPE BEDDING MATERIAL

PART 2 - PRODUCTS
2.01 MATERIAL:
A. GRAVEL BORROW:
Gravel borrow shall consist of inert material that is hard, durable stone and coarse
sand essentially free of organic matter, plastic fines (clay) and debris, and shall
meet the gradation requirements below:

Sieve Opening Percent Passing (weight)
6 inch 100
No 4 25 - 70
No 200 0-12

1.04

1.05

1.06

1.07

SUBMITTALS: IN ACCORDANCE WITH REQUIREMENTS OF GENERAL
SPECIFICATIONS, SUBMIT THE FOLLOWING:

Samples of all materials proposed for the project shall be submitted to the Engineer for
review. Size of the samples shall be as approved by the Engineer.

PROTECTION OF EXISTING PROPERTY:

SECTION 02300

EARTHWORK

PART 1 - GENERAL

1.01

1.02

595 AO BD }

es

1.03

WORK INCLUDED:

The Contractor shall make excavations of normal depth in earth for trenches and structures,
shall backfill and compact such excavations to the extent necessary, shall furnish the
necessary material and construct embankments and fills, and shall make miscellaneous
earth excavations and do miscellaneous grading.

RELATED WORK:

B. _ The sheeting shall be securely and satisfactorily braced to withstand all pressures to which it
may be subjected and be sufficiently tight to minimize lowering of the groundwater level
outside the excavation.

C. The sheeting shall be driven by approved means to the design elevation. No sheeting may be
left so as to create a possible hazard to safety of the public or a hindrance to traffic of any
kind.

SECTION 02252

SUPPORT OF EXCAVATION
PART 1 - GENERAL
1.01 WORK INCLUDED:
A. This section of the specification covers sheeting and bracing for support of

excavations. The requirements of this section shall also apply, as appropriate, to other
methods of excavation support and underpinning which the Contractor elects to use to
complete the work.

3.12

The laboratory shall be successfully participating in the AIHA/NIOSH Proficiency
Analytical Testing (PAT) program and be Certified by the State of New Hampshire.

Numbers and frequencies of personal air sampling shall be as required by OSHA
regulations but not less than one (1) sample per eight (8) hour work shift during times of
asbestos removal and related work.

Results of sample analysis shall be provided to the Engineer within twenty-four (24)
hours of collection.

3.11

If airborne fiber concentrations exceed 2.0 fibers per cubic centimeter for any
period of time, cease all Work until fiber counts fall below 0.5 fibers per cubic
centimeter and notify Engineer. Do not recommence Work until authorized in
writing by the Engineer.

2. Outside Work Area: If any air sample taken outside of the Work Area exceeds
the established baseline, immediately and automatically stop all Work.

a. Decontaminate the affected area in accordance with these Specifications.

3.10

following the procedures described herein. The bottom layer of protective poly
coverings, the Decontamination Facilities, the HEPA exhaust systems and all
barrier walls shall remain in place and in use.

AIR MONITORING BY ENGINEER

3.09

FINAL CLEANING AND DECONTAMINATION