R SZlu

DESIGN OF METHANE MITIGATION SYSTEM STATUS REPORT

ROSE HILL LANDFILL SOUTH KINGSTOWN RI WA 3-694

OFFICE OF EMERGENCY AND REMEDIAL RESPONSE

ROY F WESTON INC7REAC GSA RARITAN DEPOT 2890 WOODBRIDGE AVENUE BLDG 209 ANNEX EDISON NJ 08837-3679 908-632-9200 bull FAX 908-632-9205

TO Thomas Pritchett US EPA Work Assignment Manager

THROUGH Gary Buchanan REAC Section Chief

FROM Steve Blaze REAC Task Leader Dan Grouse REAC Subtask Leader

DATE November 9 1992

SUBJECT DESIGN OF METHANE MITIGATION SYSTEM - STATUS REPORT ROSE HILL LANDFILL SOUTH KINGSTOWN RI WA 3-694

BACKGROUND

The United States Environmental Protection Agencys Environmental Response Team (US EPAERT) issued a Work Assignment to the Response Engineering and Analytical Contract (REAC) for the Rose Hill Landfill site The Work Assignment contains several tasks including site sampling conducting air modeling designing a remote methane monitoring system and designing a methane mitigation system for a home adjacent to the landfill This report will address the design of the methane mitigation system0

The Rose Hill Landfill site is located on Rose Hill Road in South Kingstown Rhode Island The landfill began solid waste disposal operations in 1967 In 1977 the landfill started accepting waste water treatment plant sludge and in 1978 bulk waste In 1983 the landfill was closed after reaching the state permitted maximum allowable capacity1

The site was a former gravel quarry owned by the town of South Kingstown and Edward Frisella a private citizen The site covers approximately 70 acres with 28 acres used for solid waste disposal 11 acres used for bulk waste disposal and an undetermined area for sewage sludge disposal0

In 1979 the Rhode Island Department of Environmental Management (RIDEM) discovered that volatile organic compounds (VOCs) had been buried in drums in the solid waste section of the landfill In 1979 Mitchell Brook which passes through the site was found to be contaminated with VOCs In 1985 eight residential wells and the transfer station were added to the municipal water supply because of contaminated groundwater1

In 1989 the US EPA Region I Remedial Section contracted with Metcalf and Eddy Inc to install permanent soil gas sampling points around the landfill and conduct a soil survey within the perimeter of thelandfilLOn November 4 1989 the US EPA placed the landfill on the National Priorities List (NPL) HHHl

|due to concern for off-site migration of landfill gas the bPA Removal Section named tne emergency planning and Response Branch (EPRB)

Crousesr4694no2 1

became involved with the project On November 15 1991 personnel from the EPA Roy F Weston Inc Technical Assistance Team (TAT) EPA Waste Management Division and the South Kingstown Fire Department monitored 12 dwellings next to the landfill for the presence of combustible gases (

_ From December 1991 to March 1992 TAT members conducted monthly monitoring visits to the area In July 1992 bimonthly visits resumed to conduct combustible gas monitoring^

On 102292 a briefing meeting was held between the Work Assignment Manager and REAC personnel to discuss the issues pertaining to the project The Work Assignment Manager indicated that methane gas was entering one basement of a house west of the landfill REACs Engineering Group was tasked with two items one was to obtain information on the feasibility of installing either a remote methane (concentrations of 100 to 10000 parts per million [ppm]) or a combustible gas indicator (CGI) (lower limit to 01 lower explosive limit [LEL]) monitor and the second was to design a methane mitigation system for the basement of one house adjacent to the landfill

On 103092 REAC submitted a draft remote methane monitoring system report which addressed the following issues

1 The description of each monitoring system 2 The general reliability of each type of monitor 3 The capability of the overall system to generate an alarm when appropriate 4 The ability to maintain a semi-continuous record of the variations in readings over long

periods of time 5 The maintenance requirements of each type including frequency and ease of calibration 6 The overall installation and operating costs (primarily those associated with the routine

maintenance functions) 7 Cost to purchase each system

OBSERVATIONS AND ACnVITIES

An article on an installation of a house radon gas mitigation system was reviewed21 at the request of the Work Assignment Manager for its applicability toward the system required for this report A literature search was also conducted which produced a US EPA handbook on the installation of home radon reduction systems13 Several mitigation companies were contacted to obtain information on intrinsically safe fans and blowers which will be used to evacuate the methane gas

These two documents were reviewed and the design for the methane mitigation system was taken from information gathered from these two sources If these assumptions are incorrect these references can be used to design a different system

Four major assumptions were used in the preparation of this design They are

1 bull The radon mitigation systems described in the reference materials can be used for methane mitigation systems

2 The basement is unfinished and incorporates one room with dimensions of 20 feet by 50 feet(4)

3 The soil beneath the slab is a coarse gravel with a high permeability(4)

4 The basement does not have a drainage system or sump pump already installed

Li

Crousesr4694no2

ROY F WESTON INC7REAC GSA RARITAN DEPOT 2890 WOODBRIDGE AVENUE BLDG 209 ANNEX EDISON NJ 08837-3679 908-632-9200 bull FAX 908-632-9205

TO Thomas Pritchett US EPA Work Assignment Manager

THROUGH Gary Buchanan REAC Section Chief

FROM Steve Blaze REAC Task Leader Dan Grouse REAC Subtask Leader

DATE November 9 1992

SUBJECT DESIGN OF METHANE MITIGATION SYSTEM - STATUS REPORT ROSE HILL LANDFILL SOUTH KINGSTOWN RI WA 3-694

BACKGROUND

The United States Environmental Protection Agencys Environmental Response Team (US EPAERT) issued a Work Assignment to the Response Engineering and Analytical Contract (REAC) for the Rose Hill Landfill site The Work Assignment contains several tasks including site sampling conducting air modeling designing a remote methane monitoring system and designing a methane mitigation system for a home adjacent to the landfill This report will address the design of the methane mitigation system0

The Rose Hill Landfill site is located on Rose Hill Road in South Kingstown Rhode Island The landfill began solid waste disposal operations in 1967 In 1977 the landfill started accepting waste water treatment plant sludge and in 1978 bulk waste In 1983 the landfill was closed after reaching the state permitted maximum allowable capacity1

The site was a former gravel quarry owned by the town of South Kingstown and Edward Frisella a private citizen The site covers approximately 70 acres with 28 acres used for solid waste disposal 11 acres used for bulk waste disposal and an undetermined area for sewage sludge disposal0

In 1979 the Rhode Island Department of Environmental Management (RIDEM) discovered that volatile organic compounds (VOCs) had been buried in drums in the solid waste section of the landfill In 1979 Mitchell Brook which passes through the site was found to be contaminated with VOCs In 1985 eight residential wells and the transfer station were added to the municipal water supply because of contaminated groundwater1

In 1989 the US EPA Region I Remedial Section contracted with Metcalf and Eddy Inc to install permanent soil gas sampling points around the landfill and conduct a soil survey within the perimeter of thelandfilLOn November 4 1989 the US EPA placed the landfill on the National Priorities List (NPL) HHHl

|due to concern for off-site migration of landfill gas the bPA Removal Section named tne emergency planning and Response Branch (EPRB)

Crousesr4694no2 1

became involved with the project On November 15 1991 personnel from the EPA Roy F Weston Inc Technical Assistance Team (TAT) EPA Waste Management Division and the South Kingstown Fire Department monitored 12 dwellings next to the landfill for the presence of combustible gases (

_ From December 1991 to March 1992 TAT members conducted monthly monitoring visits to the area In July 1992 bimonthly visits resumed to conduct combustible gas monitoring^

On 102292 a briefing meeting was held between the Work Assignment Manager and REAC personnel to discuss the issues pertaining to the project The Work Assignment Manager indicated that methane gas was entering one basement of a house west of the landfill REACs Engineering Group was tasked with two items one was to obtain information on the feasibility of installing either a remote methane (concentrations of 100 to 10000 parts per million [ppm]) or a combustible gas indicator (CGI) (lower limit to 01 lower explosive limit [LEL]) monitor and the second was to design a methane mitigation system for the basement of one house adjacent to the landfill

On 103092 REAC submitted a draft remote methane monitoring system report which addressed the following issues

1 The description of each monitoring system 2 The general reliability of each type of monitor 3 The capability of the overall system to generate an alarm when appropriate 4 The ability to maintain a semi-continuous record of the variations in readings over long

periods of time 5 The maintenance requirements of each type including frequency and ease of calibration 6 The overall installation and operating costs (primarily those associated with the routine

maintenance functions) 7 Cost to purchase each system

OBSERVATIONS AND ACnVITIES

An article on an installation of a house radon gas mitigation system was reviewed21 at the request of the Work Assignment Manager for its applicability toward the system required for this report A literature search was also conducted which produced a US EPA handbook on the installation of home radon reduction systems13 Several mitigation companies were contacted to obtain information on intrinsically safe fans and blowers which will be used to evacuate the methane gas

These two documents were reviewed and the design for the methane mitigation system was taken from information gathered from these two sources If these assumptions are incorrect these references can be used to design a different system

Four major assumptions were used in the preparation of this design They are

1 bull The radon mitigation systems described in the reference materials can be used for methane mitigation systems

2 The basement is unfinished and incorporates one room with dimensions of 20 feet by 50 feet(4)

3 The soil beneath the slab is a coarse gravel with a high permeability(4)

4 The basement does not have a drainage system or sump pump already installed

Li

Crousesr4694no2

became involved with the project On November 15 1991 personnel from the EPA Roy F Weston Inc Technical Assistance Team (TAT) EPA Waste Management Division and the South Kingstown Fire Department monitored 12 dwellings next to the landfill for the presence of combustible gases (

_ From December 1991 to March 1992 TAT members conducted monthly monitoring visits to the area In July 1992 bimonthly visits resumed to conduct combustible gas monitoring^

On 102292 a briefing meeting was held between the Work Assignment Manager and REAC personnel to discuss the issues pertaining to the project The Work Assignment Manager indicated that methane gas was entering one basement of a house west of the landfill REACs Engineering Group was tasked with two items one was to obtain information on the feasibility of installing either a remote methane (concentrations of 100 to 10000 parts per million [ppm]) or a combustible gas indicator (CGI) (lower limit to 01 lower explosive limit [LEL]) monitor and the second was to design a methane mitigation system for the basement of one house adjacent to the landfill

On 103092 REAC submitted a draft remote methane monitoring system report which addressed the following issues

1 The description of each monitoring system 2 The general reliability of each type of monitor 3 The capability of the overall system to generate an alarm when appropriate 4 The ability to maintain a semi-continuous record of the variations in readings over long

periods of time 5 The maintenance requirements of each type including frequency and ease of calibration 6 The overall installation and operating costs (primarily those associated with the routine

maintenance functions) 7 Cost to purchase each system

OBSERVATIONS AND ACnVITIES

An article on an installation of a house radon gas mitigation system was reviewed21 at the request of the Work Assignment Manager for its applicability toward the system required for this report A literature search was also conducted which produced a US EPA handbook on the installation of home radon reduction systems13 Several mitigation companies were contacted to obtain information on intrinsically safe fans and blowers which will be used to evacuate the methane gas

These two documents were reviewed and the design for the methane mitigation system was taken from information gathered from these two sources If these assumptions are incorrect these references can be used to design a different system

Four major assumptions were used in the preparation of this design They are

1 bull The radon mitigation systems described in the reference materials can be used for methane mitigation systems

2 The basement is unfinished and incorporates one room with dimensions of 20 feet by 50 feet(4)

3 The soil beneath the slab is a coarse gravel with a high permeability(4)

4 The basement does not have a drainage system or sump pump already installed

Li

Crousesr4694no2

The following items must be determined prior to installing a methane mitigation system

1 House differential pressures to determine the minimum pressure to overcome in the depressurization system

2 The effective Geld radius on extension for each suction hole31

3 The sub-slab pressure field extension measurements to determine the location and number of suction holes

4 Sub-slab pressure flow characteristics to determine the optimum pipe size and to select the proper fan or blower(3)

5 The location of slab cracks and bath and toilet openings (if any) All cracks in the floor should be sealed with a sealant prior to conducting sub-slab measurements If the cracks are not sealed invalid measurements will be obtained due to short-circuiting of the air flow

A description of each of the items above follows

House Differential Pressure

Determine the house differential pressure by the procedure listed in Appendix A Record the information on the log sheet at the end of Appendix A

Effective Field Radius of Extension

Determine the effective field radius of extension by the procedure listed in Appendix B

Sub-Slab Pressure-Flow Measurements

Determine the sub-slab pressure-flow measurements by the procedure listed in Appendix C

Sub-Slab Pressure Flow Characteristics

A Number of Suction Holes Required 1 Use the effective radius that was determined above 2 Determine the square footage of the slab 3 Using the graph in Appendix D the effective radius and the square footage of the

slab the number of suction holes can be determined from the graph 4 The location of the suction holes will have to be made based on the use of the

basement or it may be to the homeowners discretion

B The Size and Capacity of the Fan or Blower 1 The best fan is the in-line centrifugal fan for high permeability soils 2 A wiring permit may be required for installing the fan or blower The noise

produced by the fan or blower should be considered prior to purchase Smaller commercial fans produce little noise Also the location of the fan or blower may dictate what type is purchased

3 The friction loss through the pipeline is a major consideration in sizing the fan or blower A 4-inch discharge line is recommended because it would greatly reduce the friction loss compared to a 2-inch or 3-inch pipe

Crousesr4694no2

The installation of the methane mitigation system follows

1 The location of the suction holes must be matched to the house features and to the homeowners wishes

2 Drill a 5-inch diameter hole through the slab Or a larger hole can be made with concrete poured later to restore the slab

3 The type of use of the basement will determine the type of tool used to drill the hole 4 A pit should be excavated around the suction hole and below the slab Approximately 12 to 20

gallons of soil should be removed from the pitp) A wide shallow hole is better than a narrow deeper hole unless the higher permeability soil is deeper under the slab A pit near the perimeter of the house should be excavated away from the wall

5 If a S-inch hole is excavated use potyvinyl chloride (PVC) sleeves bushings flanges etc to join the 4-inch PVC pipe which is placed through the suction holep) See a typical sketch of a suction point installation system in Appendix E If a larger opening is made then use sheet metal or plywood to build a subfloor around the PVC pipe and pour concrete around the pipe to restore the slab

6 Determine the fan or blower location This should be located to minimize the length of piping from the suction hole A 4-inch flexible aluminum hose (or comparable) is recommended Fasten the suction hose to the 4-inch PVC suction pipe and run it to the suction side of the fan or blower

7 The fan or blower should be positioned in a location that doesnt interfere with the use of the basement The fan should be mounted to a plywood or sheet metal base and fastened to the floor with cinch or anchor bolts Rubber grommets or shock absorbers should be installed between the platform and the floor to minimize vibration An expansion joint should be attached to the suction side and the discharge side of the fan or blower This minimizes the vibration to the suction and discharge lines

Costs for the Methane Mitigation System

These costs are best engineered estimates Several telephone calls are still outstanding to vacuum pump vendors to obtain vacuum pump details model numbers and costs All labor costs are estimated at $ 4000 per hour

1 Vacuum fan (air pump) 2 Flexible duct work (30 feet of 4-inch aluminum) 3 Electric starter and wire 4 Electrical installation (2 men 4 hours each) 5 Labor to conduct pressure tests if needed (2 men 8 hours each) 6 Labor to install suction hole and pipeline to fan (2 men 2 hours each) 7 Fittings reducers sealant material for suction pipe

TOTAL COST

The costs to the homeowner for electricity to operate the blower and heat loss due to the vacuum placed on the sub-slab area may approach S 100-200 per year

FUTURE ACnvmES

If requested by the Work Assignment Manager REACs Engineering Group will submit the Final Status Report for the Remote Methane Monitoring System on 110992 REACs Modeling Group provided a preliminary report which estimates the landfill gas generation from the solid waste section of the landfill on 110192 and will submit a final report by 111292 An air dispersion model report to generate an estimate of long-term average and maximum ambient air exposures at the adjacent houses will be submitted by 112092

Crousesr4694no2

REFERENCES

(1gt Draft Sampling Strategy for Air Sampling at the Rose Hill Regional Landfill Site Kingstown Rhode Island October 19 and 20 1992 by Roy F Weston Inc Technical Assistance Team Region I October 1992

U) Remediation of Houses Affected by Landfill Gas Entry by Don W Fugler of Canada Mortgage and Housing Corporation Ottawa Ontario and Martin Adomait of CH2M Hill Engineering Ltd Waterloo Ontario presented to the Air amp Waste Management Association meeting dated June 16shy21 1991

(3) Handbook Sub-Slab Depressurization for Low-Permeability Fill Material Design amp Installation of a Home Radon Gas Reduction System by United States Environmental Agency Office of Research and Development Washington DC 20460 EPA6256-91029 July 1991

(4gt Information obtained from the Work Assignment Manager in a site scoping meeting at ERT on 102292

Crousesr4694no2

Appendix A

APPENDIX A

DETERMINING HOUSE DIFFERENTIAL PRESSURED

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

Steps for Determining House Differential Pressurestrade

Materials

Manometer 0-0024 + 0002 in WC (0-6 + 06 Pa) bull Two lengths of flexible (but not collapsible) tubing of a diameter to fit snugly on the manometer

ports long enough to reach from anywhere in the house to an outside door bull Some type of wind diffuser (fritted glass cotton wick etc) to go in one end of tubing bull House floor plan

Procedure

1 Visually inspect the house to identify zones that may be separated from one another by closed doors Designate them on the floor plan Likewise identify locations of air returns and supplies and appliances which may potentially depressurize the house (driers vent fans combustion appliances etc) Mark them on the floor plan

2 From a convenient location run one length of the tubing from the REFERENCE port of the manometer to the outside of the house through a door that will close over the tube without pinching or severing it If there is any appreciable wind protect the exposed end of the tubing with some type of diffuser Run the other length of the tubing from the SIGNAL port of the manometer to the space to be tested

3 Close all exterior doors windows and other openings

4 With all interior doors open and the air handler and all potentially depressurizing appliances off measure and record the house differential pressure

5 With all other conditions the same turn on the air handler and measure and record the house differential pressure Do the same with as many of the depressurizing appliances as desired and possibly with as many as required to give a worst case scenario Record all measurements on the Differential Pressure Measurement Log (page A-2)

6 Repeat step 5 either with all or with selected interior doors closed Sample with the SIGNAL tube in the same space as the air return and with it in a space (or zone) without an air return Record all measurements

A-l

Crousesr4694no2

Occupant Name

Technician

Instrument

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

bullDateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Crousesr4694no2

Differential Pressure Measurement Log0

House ID

Date

Differential Pressure Measurements

1 2

4 5 6

7 8 9

A-2

3

raquo i I

Appendix B

APPENDIX B

DETERMINING EFFECTIVE FIELD RADIUS OF EXTENSION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

CrOusesr4694no2

Steps for Determining the Effective Radius of Extension

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WC plusmn 1 0004 in WC (0-5000 Pa + 1 1 Pa)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking bull House floor plan

Procedure

1 Visually inspect the house substructure to identify the area of below-grade and on-grade floor slabs and walls and their distribution in the house layout Determine if possible the most likely sub-slab routes of freshwater lines sewage lines gas lines and any other utilities that may affect the choice of drilling sites

2 From the above information determine the location for (a) suction test hole(s) and (b) pressure sample holes

a Suction test hole(s) should be located anywhere between 6 ft and 15 ft from the nearest exterior wall and no closer than 30 ft from one another They should also be located so as to maximize area and floorwall joint coverage within a 15-ft radius of the suction hole

b Pressure sample holes should be located as available at radial distances of 3 ft 9 ft and 15 ft from the nearest suction test hole Sample holes should be located in two or three directions from each suction test hole Locate at least one pressure sample hole (scaling baseline hole) about 1 ft from each suction hole Record the location of all holes on the house floor plan

3 Drill one suction test hole (sized to match the vacuum cleaner nozzle) through the slab at the designated location(s) and temporarily seal the hole(s) with rope caulk Make certain the drill bit penetrates through the slab through the vapor barrier and well into the fill material Be careful to feel for any sub-slab obstruction

4 Drill the 38 in or 12 in pressure sample holes and seal as above

5 With the suction hole(s) and pressure sample holes drilled as directed measure the pressures at each of the pressure sample holes before operating the vacuum cleaner

These measurements will indicate the natural depressurization caused by the environment and the normal depressurization caused by appliances

NOTE Pressures at the sample holes are measured by placing the end of the sampling tube into the test holes Some means of providing an airtight seal between the tube and the drilled hole are necessary Rope caulking is the recommended material for creating this seal

B-l

Crbusesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

The installation of the methane mitigation system follows

1 The location of the suction holes must be matched to the house features and to the homeowners wishes

2 Drill a 5-inch diameter hole through the slab Or a larger hole can be made with concrete poured later to restore the slab

3 The type of use of the basement will determine the type of tool used to drill the hole 4 A pit should be excavated around the suction hole and below the slab Approximately 12 to 20

gallons of soil should be removed from the pitp) A wide shallow hole is better than a narrow deeper hole unless the higher permeability soil is deeper under the slab A pit near the perimeter of the house should be excavated away from the wall

5 If a S-inch hole is excavated use potyvinyl chloride (PVC) sleeves bushings flanges etc to join the 4-inch PVC pipe which is placed through the suction holep) See a typical sketch of a suction point installation system in Appendix E If a larger opening is made then use sheet metal or plywood to build a subfloor around the PVC pipe and pour concrete around the pipe to restore the slab

6 Determine the fan or blower location This should be located to minimize the length of piping from the suction hole A 4-inch flexible aluminum hose (or comparable) is recommended Fasten the suction hose to the 4-inch PVC suction pipe and run it to the suction side of the fan or blower

7 The fan or blower should be positioned in a location that doesnt interfere with the use of the basement The fan should be mounted to a plywood or sheet metal base and fastened to the floor with cinch or anchor bolts Rubber grommets or shock absorbers should be installed between the platform and the floor to minimize vibration An expansion joint should be attached to the suction side and the discharge side of the fan or blower This minimizes the vibration to the suction and discharge lines

Costs for the Methane Mitigation System

These costs are best engineered estimates Several telephone calls are still outstanding to vacuum pump vendors to obtain vacuum pump details model numbers and costs All labor costs are estimated at $ 4000 per hour

1 Vacuum fan (air pump) 2 Flexible duct work (30 feet of 4-inch aluminum) 3 Electric starter and wire 4 Electrical installation (2 men 4 hours each) 5 Labor to conduct pressure tests if needed (2 men 8 hours each) 6 Labor to install suction hole and pipeline to fan (2 men 2 hours each) 7 Fittings reducers sealant material for suction pipe

TOTAL COST

The costs to the homeowner for electricity to operate the blower and heat loss due to the vacuum placed on the sub-slab area may approach S 100-200 per year

FUTURE ACnvmES

If requested by the Work Assignment Manager REACs Engineering Group will submit the Final Status Report for the Remote Methane Monitoring System on 110992 REACs Modeling Group provided a preliminary report which estimates the landfill gas generation from the solid waste section of the landfill on 110192 and will submit a final report by 111292 An air dispersion model report to generate an estimate of long-term average and maximum ambient air exposures at the adjacent houses will be submitted by 112092

Crousesr4694no2

REFERENCES

(1gt Draft Sampling Strategy for Air Sampling at the Rose Hill Regional Landfill Site Kingstown Rhode Island October 19 and 20 1992 by Roy F Weston Inc Technical Assistance Team Region I October 1992

U) Remediation of Houses Affected by Landfill Gas Entry by Don W Fugler of Canada Mortgage and Housing Corporation Ottawa Ontario and Martin Adomait of CH2M Hill Engineering Ltd Waterloo Ontario presented to the Air amp Waste Management Association meeting dated June 16shy21 1991

(3) Handbook Sub-Slab Depressurization for Low-Permeability Fill Material Design amp Installation of a Home Radon Gas Reduction System by United States Environmental Agency Office of Research and Development Washington DC 20460 EPA6256-91029 July 1991

(4gt Information obtained from the Work Assignment Manager in a site scoping meeting at ERT on 102292

Crousesr4694no2

Appendix A

APPENDIX A

DETERMINING HOUSE DIFFERENTIAL PRESSURED

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

Steps for Determining House Differential Pressurestrade

Materials

Manometer 0-0024 + 0002 in WC (0-6 + 06 Pa) bull Two lengths of flexible (but not collapsible) tubing of a diameter to fit snugly on the manometer

ports long enough to reach from anywhere in the house to an outside door bull Some type of wind diffuser (fritted glass cotton wick etc) to go in one end of tubing bull House floor plan

Procedure

1 Visually inspect the house to identify zones that may be separated from one another by closed doors Designate them on the floor plan Likewise identify locations of air returns and supplies and appliances which may potentially depressurize the house (driers vent fans combustion appliances etc) Mark them on the floor plan

2 From a convenient location run one length of the tubing from the REFERENCE port of the manometer to the outside of the house through a door that will close over the tube without pinching or severing it If there is any appreciable wind protect the exposed end of the tubing with some type of diffuser Run the other length of the tubing from the SIGNAL port of the manometer to the space to be tested

3 Close all exterior doors windows and other openings

4 With all interior doors open and the air handler and all potentially depressurizing appliances off measure and record the house differential pressure

5 With all other conditions the same turn on the air handler and measure and record the house differential pressure Do the same with as many of the depressurizing appliances as desired and possibly with as many as required to give a worst case scenario Record all measurements on the Differential Pressure Measurement Log (page A-2)

6 Repeat step 5 either with all or with selected interior doors closed Sample with the SIGNAL tube in the same space as the air return and with it in a space (or zone) without an air return Record all measurements

A-l

Crousesr4694no2

Occupant Name

Technician

Instrument

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

bullDateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Crousesr4694no2

Differential Pressure Measurement Log0

House ID

Date

Differential Pressure Measurements

1 2

4 5 6

7 8 9

A-2

3

raquo i I

Appendix B

APPENDIX B

DETERMINING EFFECTIVE FIELD RADIUS OF EXTENSION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

CrOusesr4694no2

Steps for Determining the Effective Radius of Extension

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WC plusmn 1 0004 in WC (0-5000 Pa + 1 1 Pa)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking bull House floor plan

Procedure

1 Visually inspect the house substructure to identify the area of below-grade and on-grade floor slabs and walls and their distribution in the house layout Determine if possible the most likely sub-slab routes of freshwater lines sewage lines gas lines and any other utilities that may affect the choice of drilling sites

2 From the above information determine the location for (a) suction test hole(s) and (b) pressure sample holes

a Suction test hole(s) should be located anywhere between 6 ft and 15 ft from the nearest exterior wall and no closer than 30 ft from one another They should also be located so as to maximize area and floorwall joint coverage within a 15-ft radius of the suction hole

b Pressure sample holes should be located as available at radial distances of 3 ft 9 ft and 15 ft from the nearest suction test hole Sample holes should be located in two or three directions from each suction test hole Locate at least one pressure sample hole (scaling baseline hole) about 1 ft from each suction hole Record the location of all holes on the house floor plan

3 Drill one suction test hole (sized to match the vacuum cleaner nozzle) through the slab at the designated location(s) and temporarily seal the hole(s) with rope caulk Make certain the drill bit penetrates through the slab through the vapor barrier and well into the fill material Be careful to feel for any sub-slab obstruction

4 Drill the 38 in or 12 in pressure sample holes and seal as above

5 With the suction hole(s) and pressure sample holes drilled as directed measure the pressures at each of the pressure sample holes before operating the vacuum cleaner

These measurements will indicate the natural depressurization caused by the environment and the normal depressurization caused by appliances

NOTE Pressures at the sample holes are measured by placing the end of the sampling tube into the test holes Some means of providing an airtight seal between the tube and the drilled hole are necessary Rope caulking is the recommended material for creating this seal

B-l

Crbusesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

REFERENCES

(1gt Draft Sampling Strategy for Air Sampling at the Rose Hill Regional Landfill Site Kingstown Rhode Island October 19 and 20 1992 by Roy F Weston Inc Technical Assistance Team Region I October 1992

U) Remediation of Houses Affected by Landfill Gas Entry by Don W Fugler of Canada Mortgage and Housing Corporation Ottawa Ontario and Martin Adomait of CH2M Hill Engineering Ltd Waterloo Ontario presented to the Air amp Waste Management Association meeting dated June 16shy21 1991

(3) Handbook Sub-Slab Depressurization for Low-Permeability Fill Material Design amp Installation of a Home Radon Gas Reduction System by United States Environmental Agency Office of Research and Development Washington DC 20460 EPA6256-91029 July 1991

(4gt Information obtained from the Work Assignment Manager in a site scoping meeting at ERT on 102292

Crousesr4694no2

Appendix A

APPENDIX A

DETERMINING HOUSE DIFFERENTIAL PRESSURED

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

Steps for Determining House Differential Pressurestrade

Materials

Manometer 0-0024 + 0002 in WC (0-6 + 06 Pa) bull Two lengths of flexible (but not collapsible) tubing of a diameter to fit snugly on the manometer

ports long enough to reach from anywhere in the house to an outside door bull Some type of wind diffuser (fritted glass cotton wick etc) to go in one end of tubing bull House floor plan

Procedure

1 Visually inspect the house to identify zones that may be separated from one another by closed doors Designate them on the floor plan Likewise identify locations of air returns and supplies and appliances which may potentially depressurize the house (driers vent fans combustion appliances etc) Mark them on the floor plan

2 From a convenient location run one length of the tubing from the REFERENCE port of the manometer to the outside of the house through a door that will close over the tube without pinching or severing it If there is any appreciable wind protect the exposed end of the tubing with some type of diffuser Run the other length of the tubing from the SIGNAL port of the manometer to the space to be tested

3 Close all exterior doors windows and other openings

4 With all interior doors open and the air handler and all potentially depressurizing appliances off measure and record the house differential pressure

5 With all other conditions the same turn on the air handler and measure and record the house differential pressure Do the same with as many of the depressurizing appliances as desired and possibly with as many as required to give a worst case scenario Record all measurements on the Differential Pressure Measurement Log (page A-2)

6 Repeat step 5 either with all or with selected interior doors closed Sample with the SIGNAL tube in the same space as the air return and with it in a space (or zone) without an air return Record all measurements

A-l

Crousesr4694no2

Occupant Name

Technician

Instrument

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

bullDateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Crousesr4694no2

Differential Pressure Measurement Log0

House ID

Date

Differential Pressure Measurements

1 2

4 5 6

7 8 9

A-2

3

raquo i I

Appendix B

APPENDIX B

DETERMINING EFFECTIVE FIELD RADIUS OF EXTENSION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

CrOusesr4694no2

Steps for Determining the Effective Radius of Extension

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WC plusmn 1 0004 in WC (0-5000 Pa + 1 1 Pa)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking bull House floor plan

Procedure

1 Visually inspect the house substructure to identify the area of below-grade and on-grade floor slabs and walls and their distribution in the house layout Determine if possible the most likely sub-slab routes of freshwater lines sewage lines gas lines and any other utilities that may affect the choice of drilling sites

2 From the above information determine the location for (a) suction test hole(s) and (b) pressure sample holes

a Suction test hole(s) should be located anywhere between 6 ft and 15 ft from the nearest exterior wall and no closer than 30 ft from one another They should also be located so as to maximize area and floorwall joint coverage within a 15-ft radius of the suction hole

b Pressure sample holes should be located as available at radial distances of 3 ft 9 ft and 15 ft from the nearest suction test hole Sample holes should be located in two or three directions from each suction test hole Locate at least one pressure sample hole (scaling baseline hole) about 1 ft from each suction hole Record the location of all holes on the house floor plan

3 Drill one suction test hole (sized to match the vacuum cleaner nozzle) through the slab at the designated location(s) and temporarily seal the hole(s) with rope caulk Make certain the drill bit penetrates through the slab through the vapor barrier and well into the fill material Be careful to feel for any sub-slab obstruction

4 Drill the 38 in or 12 in pressure sample holes and seal as above

5 With the suction hole(s) and pressure sample holes drilled as directed measure the pressures at each of the pressure sample holes before operating the vacuum cleaner

These measurements will indicate the natural depressurization caused by the environment and the normal depressurization caused by appliances

NOTE Pressures at the sample holes are measured by placing the end of the sampling tube into the test holes Some means of providing an airtight seal between the tube and the drilled hole are necessary Rope caulking is the recommended material for creating this seal

B-l

Crbusesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

Appendix A

APPENDIX A

DETERMINING HOUSE DIFFERENTIAL PRESSURED

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

Steps for Determining House Differential Pressurestrade

Materials

Manometer 0-0024 + 0002 in WC (0-6 + 06 Pa) bull Two lengths of flexible (but not collapsible) tubing of a diameter to fit snugly on the manometer

ports long enough to reach from anywhere in the house to an outside door bull Some type of wind diffuser (fritted glass cotton wick etc) to go in one end of tubing bull House floor plan

Procedure

1 Visually inspect the house to identify zones that may be separated from one another by closed doors Designate them on the floor plan Likewise identify locations of air returns and supplies and appliances which may potentially depressurize the house (driers vent fans combustion appliances etc) Mark them on the floor plan

2 From a convenient location run one length of the tubing from the REFERENCE port of the manometer to the outside of the house through a door that will close over the tube without pinching or severing it If there is any appreciable wind protect the exposed end of the tubing with some type of diffuser Run the other length of the tubing from the SIGNAL port of the manometer to the space to be tested

3 Close all exterior doors windows and other openings

4 With all interior doors open and the air handler and all potentially depressurizing appliances off measure and record the house differential pressure

5 With all other conditions the same turn on the air handler and measure and record the house differential pressure Do the same with as many of the depressurizing appliances as desired and possibly with as many as required to give a worst case scenario Record all measurements on the Differential Pressure Measurement Log (page A-2)

6 Repeat step 5 either with all or with selected interior doors closed Sample with the SIGNAL tube in the same space as the air return and with it in a space (or zone) without an air return Record all measurements

A-l

Crousesr4694no2

Occupant Name

Technician

Instrument

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

bullDateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Crousesr4694no2

Differential Pressure Measurement Log0

House ID

Date

Differential Pressure Measurements

1 2

4 5 6

7 8 9

A-2

3

raquo i I

Appendix B

APPENDIX B

DETERMINING EFFECTIVE FIELD RADIUS OF EXTENSION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

CrOusesr4694no2

Steps for Determining the Effective Radius of Extension

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WC plusmn 1 0004 in WC (0-5000 Pa + 1 1 Pa)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking bull House floor plan

Procedure

1 Visually inspect the house substructure to identify the area of below-grade and on-grade floor slabs and walls and their distribution in the house layout Determine if possible the most likely sub-slab routes of freshwater lines sewage lines gas lines and any other utilities that may affect the choice of drilling sites

2 From the above information determine the location for (a) suction test hole(s) and (b) pressure sample holes

a Suction test hole(s) should be located anywhere between 6 ft and 15 ft from the nearest exterior wall and no closer than 30 ft from one another They should also be located so as to maximize area and floorwall joint coverage within a 15-ft radius of the suction hole

b Pressure sample holes should be located as available at radial distances of 3 ft 9 ft and 15 ft from the nearest suction test hole Sample holes should be located in two or three directions from each suction test hole Locate at least one pressure sample hole (scaling baseline hole) about 1 ft from each suction hole Record the location of all holes on the house floor plan

3 Drill one suction test hole (sized to match the vacuum cleaner nozzle) through the slab at the designated location(s) and temporarily seal the hole(s) with rope caulk Make certain the drill bit penetrates through the slab through the vapor barrier and well into the fill material Be careful to feel for any sub-slab obstruction

4 Drill the 38 in or 12 in pressure sample holes and seal as above

5 With the suction hole(s) and pressure sample holes drilled as directed measure the pressures at each of the pressure sample holes before operating the vacuum cleaner

These measurements will indicate the natural depressurization caused by the environment and the normal depressurization caused by appliances

NOTE Pressures at the sample holes are measured by placing the end of the sampling tube into the test holes Some means of providing an airtight seal between the tube and the drilled hole are necessary Rope caulking is the recommended material for creating this seal

B-l

Crbusesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

APPENDIX A

DETERMINING HOUSE DIFFERENTIAL PRESSURED

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

Steps for Determining House Differential Pressurestrade

Materials

Manometer 0-0024 + 0002 in WC (0-6 + 06 Pa) bull Two lengths of flexible (but not collapsible) tubing of a diameter to fit snugly on the manometer

ports long enough to reach from anywhere in the house to an outside door bull Some type of wind diffuser (fritted glass cotton wick etc) to go in one end of tubing bull House floor plan

Procedure

1 Visually inspect the house to identify zones that may be separated from one another by closed doors Designate them on the floor plan Likewise identify locations of air returns and supplies and appliances which may potentially depressurize the house (driers vent fans combustion appliances etc) Mark them on the floor plan

2 From a convenient location run one length of the tubing from the REFERENCE port of the manometer to the outside of the house through a door that will close over the tube without pinching or severing it If there is any appreciable wind protect the exposed end of the tubing with some type of diffuser Run the other length of the tubing from the SIGNAL port of the manometer to the space to be tested

3 Close all exterior doors windows and other openings

4 With all interior doors open and the air handler and all potentially depressurizing appliances off measure and record the house differential pressure

5 With all other conditions the same turn on the air handler and measure and record the house differential pressure Do the same with as many of the depressurizing appliances as desired and possibly with as many as required to give a worst case scenario Record all measurements on the Differential Pressure Measurement Log (page A-2)

6 Repeat step 5 either with all or with selected interior doors closed Sample with the SIGNAL tube in the same space as the air return and with it in a space (or zone) without an air return Record all measurements

A-l

Crousesr4694no2

Occupant Name

Technician

Instrument

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

bullDateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Crousesr4694no2

Differential Pressure Measurement Log0

House ID

Date

Differential Pressure Measurements

1 2

4 5 6

7 8 9

A-2

3

raquo i I

Appendix B

APPENDIX B

DETERMINING EFFECTIVE FIELD RADIUS OF EXTENSION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

CrOusesr4694no2

Steps for Determining the Effective Radius of Extension

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WC plusmn 1 0004 in WC (0-5000 Pa + 1 1 Pa)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking bull House floor plan

Procedure

1 Visually inspect the house substructure to identify the area of below-grade and on-grade floor slabs and walls and their distribution in the house layout Determine if possible the most likely sub-slab routes of freshwater lines sewage lines gas lines and any other utilities that may affect the choice of drilling sites

2 From the above information determine the location for (a) suction test hole(s) and (b) pressure sample holes

a Suction test hole(s) should be located anywhere between 6 ft and 15 ft from the nearest exterior wall and no closer than 30 ft from one another They should also be located so as to maximize area and floorwall joint coverage within a 15-ft radius of the suction hole

b Pressure sample holes should be located as available at radial distances of 3 ft 9 ft and 15 ft from the nearest suction test hole Sample holes should be located in two or three directions from each suction test hole Locate at least one pressure sample hole (scaling baseline hole) about 1 ft from each suction hole Record the location of all holes on the house floor plan

3 Drill one suction test hole (sized to match the vacuum cleaner nozzle) through the slab at the designated location(s) and temporarily seal the hole(s) with rope caulk Make certain the drill bit penetrates through the slab through the vapor barrier and well into the fill material Be careful to feel for any sub-slab obstruction

4 Drill the 38 in or 12 in pressure sample holes and seal as above

5 With the suction hole(s) and pressure sample holes drilled as directed measure the pressures at each of the pressure sample holes before operating the vacuum cleaner

These measurements will indicate the natural depressurization caused by the environment and the normal depressurization caused by appliances

NOTE Pressures at the sample holes are measured by placing the end of the sampling tube into the test holes Some means of providing an airtight seal between the tube and the drilled hole are necessary Rope caulking is the recommended material for creating this seal

B-l

Crbusesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

Steps for Determining House Differential Pressurestrade

Materials

Manometer 0-0024 + 0002 in WC (0-6 + 06 Pa) bull Two lengths of flexible (but not collapsible) tubing of a diameter to fit snugly on the manometer

ports long enough to reach from anywhere in the house to an outside door bull Some type of wind diffuser (fritted glass cotton wick etc) to go in one end of tubing bull House floor plan

Procedure

1 Visually inspect the house to identify zones that may be separated from one another by closed doors Designate them on the floor plan Likewise identify locations of air returns and supplies and appliances which may potentially depressurize the house (driers vent fans combustion appliances etc) Mark them on the floor plan

2 From a convenient location run one length of the tubing from the REFERENCE port of the manometer to the outside of the house through a door that will close over the tube without pinching or severing it If there is any appreciable wind protect the exposed end of the tubing with some type of diffuser Run the other length of the tubing from the SIGNAL port of the manometer to the space to be tested

3 Close all exterior doors windows and other openings

4 With all interior doors open and the air handler and all potentially depressurizing appliances off measure and record the house differential pressure

5 With all other conditions the same turn on the air handler and measure and record the house differential pressure Do the same with as many of the depressurizing appliances as desired and possibly with as many as required to give a worst case scenario Record all measurements on the Differential Pressure Measurement Log (page A-2)

6 Repeat step 5 either with all or with selected interior doors closed Sample with the SIGNAL tube in the same space as the air return and with it in a space (or zone) without an air return Record all measurements

A-l

Crousesr4694no2

Occupant Name

Technician

Instrument

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

bullDateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Crousesr4694no2

Differential Pressure Measurement Log0

House ID

Date

Differential Pressure Measurements

1 2

4 5 6

7 8 9

A-2

3

raquo i I

Appendix B

APPENDIX B

DETERMINING EFFECTIVE FIELD RADIUS OF EXTENSION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

CrOusesr4694no2

Steps for Determining the Effective Radius of Extension

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WC plusmn 1 0004 in WC (0-5000 Pa + 1 1 Pa)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking bull House floor plan

Procedure

1 Visually inspect the house substructure to identify the area of below-grade and on-grade floor slabs and walls and their distribution in the house layout Determine if possible the most likely sub-slab routes of freshwater lines sewage lines gas lines and any other utilities that may affect the choice of drilling sites

2 From the above information determine the location for (a) suction test hole(s) and (b) pressure sample holes

a Suction test hole(s) should be located anywhere between 6 ft and 15 ft from the nearest exterior wall and no closer than 30 ft from one another They should also be located so as to maximize area and floorwall joint coverage within a 15-ft radius of the suction hole

b Pressure sample holes should be located as available at radial distances of 3 ft 9 ft and 15 ft from the nearest suction test hole Sample holes should be located in two or three directions from each suction test hole Locate at least one pressure sample hole (scaling baseline hole) about 1 ft from each suction hole Record the location of all holes on the house floor plan

3 Drill one suction test hole (sized to match the vacuum cleaner nozzle) through the slab at the designated location(s) and temporarily seal the hole(s) with rope caulk Make certain the drill bit penetrates through the slab through the vapor barrier and well into the fill material Be careful to feel for any sub-slab obstruction

4 Drill the 38 in or 12 in pressure sample holes and seal as above

5 With the suction hole(s) and pressure sample holes drilled as directed measure the pressures at each of the pressure sample holes before operating the vacuum cleaner

These measurements will indicate the natural depressurization caused by the environment and the normal depressurization caused by appliances

NOTE Pressures at the sample holes are measured by placing the end of the sampling tube into the test holes Some means of providing an airtight seal between the tube and the drilled hole are necessary Rope caulking is the recommended material for creating this seal

B-l

Crbusesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

Occupant Name

Technician

Instrument

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

bullDateTime

Measurements

Measurement Number

Type of Measurement Location

Measurement Condition

DateTime

Measurements

Crousesr4694no2

Differential Pressure Measurement Log0

House ID

Date

Differential Pressure Measurements

1 2

4 5 6

7 8 9

A-2

3

raquo i I

Appendix B

APPENDIX B

DETERMINING EFFECTIVE FIELD RADIUS OF EXTENSION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

CrOusesr4694no2

Steps for Determining the Effective Radius of Extension

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WC plusmn 1 0004 in WC (0-5000 Pa + 1 1 Pa)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking bull House floor plan

Procedure

1 Visually inspect the house substructure to identify the area of below-grade and on-grade floor slabs and walls and their distribution in the house layout Determine if possible the most likely sub-slab routes of freshwater lines sewage lines gas lines and any other utilities that may affect the choice of drilling sites

2 From the above information determine the location for (a) suction test hole(s) and (b) pressure sample holes

a Suction test hole(s) should be located anywhere between 6 ft and 15 ft from the nearest exterior wall and no closer than 30 ft from one another They should also be located so as to maximize area and floorwall joint coverage within a 15-ft radius of the suction hole

b Pressure sample holes should be located as available at radial distances of 3 ft 9 ft and 15 ft from the nearest suction test hole Sample holes should be located in two or three directions from each suction test hole Locate at least one pressure sample hole (scaling baseline hole) about 1 ft from each suction hole Record the location of all holes on the house floor plan

3 Drill one suction test hole (sized to match the vacuum cleaner nozzle) through the slab at the designated location(s) and temporarily seal the hole(s) with rope caulk Make certain the drill bit penetrates through the slab through the vapor barrier and well into the fill material Be careful to feel for any sub-slab obstruction

4 Drill the 38 in or 12 in pressure sample holes and seal as above

5 With the suction hole(s) and pressure sample holes drilled as directed measure the pressures at each of the pressure sample holes before operating the vacuum cleaner

These measurements will indicate the natural depressurization caused by the environment and the normal depressurization caused by appliances

NOTE Pressures at the sample holes are measured by placing the end of the sampling tube into the test holes Some means of providing an airtight seal between the tube and the drilled hole are necessary Rope caulking is the recommended material for creating this seal

B-l

Crbusesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

raquo i I

Appendix B

APPENDIX B

DETERMINING EFFECTIVE FIELD RADIUS OF EXTENSION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

CrOusesr4694no2

Steps for Determining the Effective Radius of Extension

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WC plusmn 1 0004 in WC (0-5000 Pa + 1 1 Pa)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking bull House floor plan

Procedure

1 Visually inspect the house substructure to identify the area of below-grade and on-grade floor slabs and walls and their distribution in the house layout Determine if possible the most likely sub-slab routes of freshwater lines sewage lines gas lines and any other utilities that may affect the choice of drilling sites

2 From the above information determine the location for (a) suction test hole(s) and (b) pressure sample holes

a Suction test hole(s) should be located anywhere between 6 ft and 15 ft from the nearest exterior wall and no closer than 30 ft from one another They should also be located so as to maximize area and floorwall joint coverage within a 15-ft radius of the suction hole

b Pressure sample holes should be located as available at radial distances of 3 ft 9 ft and 15 ft from the nearest suction test hole Sample holes should be located in two or three directions from each suction test hole Locate at least one pressure sample hole (scaling baseline hole) about 1 ft from each suction hole Record the location of all holes on the house floor plan

3 Drill one suction test hole (sized to match the vacuum cleaner nozzle) through the slab at the designated location(s) and temporarily seal the hole(s) with rope caulk Make certain the drill bit penetrates through the slab through the vapor barrier and well into the fill material Be careful to feel for any sub-slab obstruction

4 Drill the 38 in or 12 in pressure sample holes and seal as above

5 With the suction hole(s) and pressure sample holes drilled as directed measure the pressures at each of the pressure sample holes before operating the vacuum cleaner

These measurements will indicate the natural depressurization caused by the environment and the normal depressurization caused by appliances

NOTE Pressures at the sample holes are measured by placing the end of the sampling tube into the test holes Some means of providing an airtight seal between the tube and the drilled hole are necessary Rope caulking is the recommended material for creating this seal

B-l

Crbusesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

APPENDIX B

DETERMINING EFFECTIVE FIELD RADIUS OF EXTENSION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

CrOusesr4694no2

Steps for Determining the Effective Radius of Extension

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WC plusmn 1 0004 in WC (0-5000 Pa + 1 1 Pa)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking bull House floor plan

Procedure

1 Visually inspect the house substructure to identify the area of below-grade and on-grade floor slabs and walls and their distribution in the house layout Determine if possible the most likely sub-slab routes of freshwater lines sewage lines gas lines and any other utilities that may affect the choice of drilling sites

2 From the above information determine the location for (a) suction test hole(s) and (b) pressure sample holes

a Suction test hole(s) should be located anywhere between 6 ft and 15 ft from the nearest exterior wall and no closer than 30 ft from one another They should also be located so as to maximize area and floorwall joint coverage within a 15-ft radius of the suction hole

b Pressure sample holes should be located as available at radial distances of 3 ft 9 ft and 15 ft from the nearest suction test hole Sample holes should be located in two or three directions from each suction test hole Locate at least one pressure sample hole (scaling baseline hole) about 1 ft from each suction hole Record the location of all holes on the house floor plan

3 Drill one suction test hole (sized to match the vacuum cleaner nozzle) through the slab at the designated location(s) and temporarily seal the hole(s) with rope caulk Make certain the drill bit penetrates through the slab through the vapor barrier and well into the fill material Be careful to feel for any sub-slab obstruction

4 Drill the 38 in or 12 in pressure sample holes and seal as above

5 With the suction hole(s) and pressure sample holes drilled as directed measure the pressures at each of the pressure sample holes before operating the vacuum cleaner

These measurements will indicate the natural depressurization caused by the environment and the normal depressurization caused by appliances

NOTE Pressures at the sample holes are measured by placing the end of the sampling tube into the test holes Some means of providing an airtight seal between the tube and the drilled hole are necessary Rope caulking is the recommended material for creating this seal

B-l

Crbusesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

Steps for Determining the Effective Radius of Extension

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WC plusmn 1 0004 in WC (0-5000 Pa + 1 1 Pa)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking bull House floor plan

Procedure

1 Visually inspect the house substructure to identify the area of below-grade and on-grade floor slabs and walls and their distribution in the house layout Determine if possible the most likely sub-slab routes of freshwater lines sewage lines gas lines and any other utilities that may affect the choice of drilling sites

2 From the above information determine the location for (a) suction test hole(s) and (b) pressure sample holes

a Suction test hole(s) should be located anywhere between 6 ft and 15 ft from the nearest exterior wall and no closer than 30 ft from one another They should also be located so as to maximize area and floorwall joint coverage within a 15-ft radius of the suction hole

b Pressure sample holes should be located as available at radial distances of 3 ft 9 ft and 15 ft from the nearest suction test hole Sample holes should be located in two or three directions from each suction test hole Locate at least one pressure sample hole (scaling baseline hole) about 1 ft from each suction hole Record the location of all holes on the house floor plan

3 Drill one suction test hole (sized to match the vacuum cleaner nozzle) through the slab at the designated location(s) and temporarily seal the hole(s) with rope caulk Make certain the drill bit penetrates through the slab through the vapor barrier and well into the fill material Be careful to feel for any sub-slab obstruction

4 Drill the 38 in or 12 in pressure sample holes and seal as above

5 With the suction hole(s) and pressure sample holes drilled as directed measure the pressures at each of the pressure sample holes before operating the vacuum cleaner

These measurements will indicate the natural depressurization caused by the environment and the normal depressurization caused by appliances

NOTE Pressures at the sample holes are measured by placing the end of the sampling tube into the test holes Some means of providing an airtight seal between the tube and the drilled hole are necessary Rope caulking is the recommended material for creating this seal

B-l

Crbusesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

6 Place the micromanometer to measure the suction induced at the scaling baseline hole of the suction hole being tested (The scaling baseline hole is the pressure sample hole located 1 ft from the suction hole)

7 With the vacuum cleaner set to produce about a 15-2 in WC (375-500 Pa) pressure differential at that baseline hole make pressure field measurements at the pressure sample holes starting with the ones closest to the suction hole and moving out

NOTE At most of the close pressure sample holes some differential pressure may be measured but at some of the more distant sample holes more than likely no consistent reading will be possible

8 Record the pressures measured at each sample hole and compare them with the pressures measured before the vacuum cleaner was run The pressure induced by the vacuum cleaner should decrease as you move farther from the suction hole The greatest distance from the suction hole at which a pressure greater than or equal to the greatest house differential measurement was recorded should be taken as the effective radius of extension r for that pressure field However the effective radius of extension should not be greater than the minimum distance from the suction hole where no vacuum-induced pressure could be detected

B-2

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

Appendix C

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

APPENDIX C

DETERMINING SUB-SLAB PRESSURE-FLOW MEASUREMENTS3

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crouse3r4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

Steps for Making Sub-Slab Pressure-Flow Measurements3

Materials

bull Industrial vacuum cleaner 100 cfm 80 in WC Micromanometer 0-20 in WCplusmn 1 0004 in WC (0-5000 Pa plusmn 1 1 Pa)

bull Device to measure flow at vacuum cleaner inlet (bot wire anemometer calibrated orifice vane anemometer rotameter Pitot tube or electronic anemometer)

bull Speed control for vacuum cleaner bull 38 or 12 hammer drill masonry and impact drill bits bull Rope caulking

Procedure

1 Connect the industrial variable speed vacuum cleaner with an airtight seal to the suction test hole Have on-line and ready the devices to measure the flow into the vacuum cleaner and the suction at the scaling baseline hole (about 1 ft from the suction hole)

2 Operate the vacuum cleaner at a speed so as to produce 08 in WC (200 Pa) of suction at the scaling baseline hole Record the suction and flow at that setting

3 Increase the vacuum cleaner speed so as to produce 2 in WC (500 Pa) and 5 in WC (1250 Pa) suctions at the scaling baseline hole while measuring and recording these suctions and the flows into the vacuum cleaner

NOTE The pressure at the scaling baseline hole and the flow measurements from the suction test hole are the values that will be used to plot the sub-slab flow curve for the house and soil beneath it

C-l

CrOuse3r4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

r

Appendix D

L

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

APPENDIX D

GRAPH FOR DETERMINING THE NUMBER OF SUCTION HOLESCT

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

DETERMINATION OF NUMBER OF SUCTION HOLEStrade

4000

1000

a pound

3 bull I (A

1

100

25 20 15 125 11 10 8

Effective Pressure Reid Radius of Extension r (ft)

D-l

Crousesr4694no2

5

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

Appendix E

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

APPENDIX E

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION^

ROSE HILL LANDFILL

SOUTH KINGSTOWN RHODE ISLAND

NOVEMBER 1992

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2

TYPICAL SKETCH OF SUCTION PIPE INSTALLATION3

15 to 3-4n PVC pipe to attic fuigt

AD PVC joints and Junction mat traquo glued tightly

PVC collar Urethane caulk for an airtight

laquo Excavate aa large a pit a posslbla (12 - 20 gaL) under the slab

WSraquolt^ ltsect^ laquoshy

E-l

Crousesr4694no2