Soil-Gas-Control-NC

CC-1000 Introduction 2
Table of Contents 3
1 Scope 4
2 Terms and Definitions 5
3 Requirement Summary 6
4 Soil Gas Collection Plenums 6
4.1 General 6
4.2 Size calculations 6
4.3 Systems per plenum size 6
Table 4.3 plenum size per pipe size 7
4.4 Collective espanses 7
4.5 Joined plenums 7
4.6 Joined systems 7
4.7 Limiting size 8
4.8 Ventilated garages not required 8
5 Plenum Construction 8
5.1 Close the bottom 8
5.2 Close the sides 8
5.3 Foundation drains 8
5.4 Footings and joined plenums 9
5.5 Gas permeable layers 9
Void space, sand, fine gravel and soil 10
5.6 Duct sizes 11
5.7 Soil gas inlets 12
5.8 Transition 13
5.9 Test ports 13
5.10 Prior to slabs or soil gas retarders 13
6 Close the Plenum Top 14
6.1 General 14
6.2 Concrete floors 14
6.3 Crawl space floors 15
6.4 Materials and installation of retarders 15
6.5 Inspect (prior to finishes) 16
7 Pressure Field Extension 16
8 Soil Gas Exhaust Vent Pipe 17
8.1 General 17
8.2 Slope 17
8.3 Prevent leakage 17
8.4 Pipe routing 17
8.5 Pipe support 18
8.6 Equivalent length 18
8.7 Piping materials 18
8.8 Joints 18
8.9 Provision for ASD fans 18
8.10 Labels 19
9 Exhaust Locations 20
9.1 General 20
9.2 Outdoors 20
9.3 Directional spread 20
9.4 Straight-line trajectory 20
9.5 Elevation above grade 20
9.6 Roof 20
9.7 Separation from openings and people 21
9.8 Protection from debris 21
9.9 Increased distances 21
9.10 Inspect (prior to finishes) 21
10 Completion of Systems 22
10.1 Labeling 22
10.2 Systems with no fan 22
10.3 Activation with ASD fan 22
11 HVAC Evaluations 23
12 Documentation 24
12.1 OM&M Plan 24
12.2 OM&M Manual 24
Table 12.1.3 OM&M plan requirements 25
12.3 Radon Testing 26
13 Chemical Vapors Intrustion 26
Annexes (non-normative) 28
Exhibits (inspection forms) 30
A-1 Prior to soil closure with slabs or retarders 30
A-2 Prior to finishes in ground contact areas 31
A-3 Prior to finishes around piping 32
Referenced Publications 33
CC-1000 Consensus Body Members 34
Companion Guidance 35
Understanding Soil Gas 36
Step-by-step for teams 36
Sections 1-4 Design 37
5 Plenum construction 38
5.5 Gas permeable layers 39
5.6 Duct sizes 41
5.7.2-5.10 Inlet ducting 44
6-7 Close the plenum & PFE 44
8 Vent pipe 45
9-13 Exhaust 46
10-13 Completion, HVAC, Documentation and Vapor Intrusion 46
Annexes (non-normative) 47
Example ASD fans 47

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