Attachment 1 - SOW_ LXEZ254573 RADON MITIGATION SYSTEM (200UN).pdf

10-Jun-25

STATEMENT OF WORK

JUN 2025

PROJECT #: LXEZ254573

PROJECT DESCRIPTION: RADON MITIGATION SYSTEM, ISLAND WIDE

PROJECT LOCATION: ISLAND WIDE, OKINAWA, JP

PROJECT MANAGER: JON HAYASHI, AFIMSC DET 2 OL-B, KADENA, 632-7067

1. GENERAL:

1.1 SCOPE: The Contractor shall furnish all labor, materials, equipment, tools, testing, plan, design, and management to upgrade or install reliable and functional radon mitigation system for 200 housing units. The

Contractor shall provide all labor, materials, equipment, transportation, supervision, quality control, and other items necessary to design, manage and accomplish repair /upgrade or install new radon mitigation systems

(sub-slab suction or depressurization or positive pressure ventilation) 200 housing units. Work will be comprised of Military Family Housing (MFH) located in Kadena Air Base and US Marine Corps Camps on

Okinawa, Japan.

1.2 Work includes but is not limited to pre-installation inspection, gathering of relevant site data, and review of existing drawings and radon sampling data. Determine size, location, and configuration of radon mitigation systems to continuously maintain radon levels under 0.8 Working Level Months per year (WLM/yr) or 4 pico-

Curies per liter (pCi/L) for the housing unit.

1.2.1 Housing Unit without a radon system:

a) The Contractor shall select the best efficient, feasible and effective location near the living room for the new system.

b) The Contractor shall install Complete Usable Radon Mitigation

1.3 Place of performance: Kadena Air Base (to include Camp Shields (O’Donnell Garden Housing, Camp

Lester (New Lester Housing), Camp Foster (Futenma, Chatan and Sada,) and Camp Courtney (to include Camp

McTureous)

1.4 INSTALLATION: New system shall be completed using active soil depressurization (ASD) techniques and employ sub-slab depressurization (SSD) methods. All installed exterior hardware, and components shall be corrosion resistant suitable for coastal marine environments. Provide electrical wire from new suction fan to existing circuit breaker panel board. New interior conduit shall run above ceiling as much as possible.

1.5 ASBESTOS AND LEAD BASED PAINT (LBP) SAMPLING RESULTS: Applying 40 CFR § 763.83

Homogeneous methodology (similar construction year, unit type/model, surface material, thermal system or miscellaneous material that is uniform in color and texture). All LBP samples are less than 0.5% lead by weight and Asbestos detected on 53 of 200 unit, see attachment 1.4 t test/sample results from current and historical data.

1.6 RESTORATION: The Contractor shall restore all excavated and damaged areas to same as existing adjacent surface.

1.7 POST TESTING: Following the installation of radon mitigation systems, perform radon tests in each unit in accordance with EPA Guidance (EPA 402-R-93-003), replace with current radon standard ANSI/AARST

SGM-MILB 2023 (https://standards.aarst.org/SGM-MFLB-2023/index.html#zoom=z) and Bioenvironmental

Engineering Guidebook for Radon Management 3rd Edition (1), see Attach 1.2. The radon test shall be a continuous monitoring system which will measure the radon levels over a minimum period of 91 days.

1.8 NO POST MITIGATION: Additional mitigation work following the Post Testing is not required on this contract.

1.9 Preparation of Final Report: Upon completion of the installation work, the Contractor shall provide a final report summarizing all field activities including conclusions and recommendations. In addition, the

Contractor shall provide (either as an appendix to the final report or a separate report) operations, maintenance, and warranty information on installed systems. Include detailed photos of pre-existing conditions, work performed, and final conditions. Photos shall include unit numbers and written descriptions, as necessary.

1.10 This project covers the following Unit and floorplan type.

NUM INSTALLATION MFH NAME Bldg. Unit No. Unit Type ACM LBP

1 CAMP COURTNEY COURTNEY 4435 D JC3-85P9ADA ND NEG

2 CAMP COURTNEY COURTNEY 4464 A JB4-85P8 POS NEG

3 CAMP COURTNEY COURTNEY 4464 F JB4-85P8 POS NEG

4 CAMP COURTNEY COURTNEY 4468 F JB4-85P8 POS NEG

5 CAMP COURTNEY COURTNEY 4541 D JC3-85P9 ND NEG

6 CAMP COURTNEY COURTNEY 4542 D JC3-85P9 ND NEG

7 CAMP COURTNEY COURTNEY 4543 D JC3-85P9 ND NEG

8 CAMP COURTNEY COURTNEY 4544 A JC3-85P9 ND NEG

9 CAMP COURTNEY COURTNEY 4544 D JC3-85P9 ND NEG

10 CAMP COURTNEY COURTNEY 4546 D JC3-85P9 ND NEG

11 CAMP COURTNEY COURTNEY 4561 A JB4-85P8 POS NEG

12 CAMP COURTNEY COURTNEY 4561 D JB4-85P8 POS NEG

https://standards.aarst.org/SGM-MFLB-2023/index.html#zoom=z

13 CAMP COURTNEY COURTNEY 4562 A JB4-85P8 POS NEG

14 CAMP COURTNEY COURTNEY 4562 D JB4-85P8 POS NEG

15 CAMP COURTNEY COURTNEY 4563 A JB4-85P8 POS NEG

16 CAMP COURTNEY COURTNEY 4563 D JB4-85P8 POS NEG

17 CAMP COURTNEY COURTNEY 4564 A JB4-85P8 POS NEG

18 CAMP COURTNEY COURTNEY 4564 D JB4-85P8 POS NEG

19 CAMP COURTNEY COURTNEY 4565 A JB4-85P8 POS NEG

20 CAMP COURTNEY COURTNEY 4565 D JB4-85P8 POS NEG

21 CAMP COURTNEY COURTNEY 4566 A JB4-85P8 POS NEG

22 CAMP COURTNEY COURTNEY 4566 D JB4-85P8 POS NEG

23 CAMP COURTNEY COURTNEY 4568 A JB4-85P8 POS NEG

24 CAMP COURTNEY COURTNEY 4569 A JB4-85P8 POS NEG

25 CAMP COURTNEY COURTNEY 4569 D JB4-85P8 POS NEG

26 CAMP COURTNEY COURTNEY 4570 A JB4-85P8 POS NEG

27 CAMP COURTNEY COURTNEY 4570 D JB4-85P8 POS NEG

28 CAMP FOSTER CHATAN 1355 A HT3-02 CH ND NEG

29 CAMP FOSTER CHATAN 1368 A HT2-02 CH POS NEG

30 CAMP FOSTER CHATAN 1369 D HT3-02 CH ND NEG

31 CAMP FOSTER CHATAN 1370 A HT3-02 CH ND NEG

32 CAMP FOSTER CHATAN 1372 A HT2-02 CH POS NEG

33 CAMP FOSTER CHATAN 1372 A HT2-02 CH POS NEG

34 CAMP FOSTER CHATAN 1372 F HT2-02 CH POS NEG

35 CAMP FOSTER CHATAN 1373 A HT2-02 CH POS NEG

36 CAMP FOSTER CHATAN 1375 A HT3-02 CH ND NEG

37 CAMP FOSTER CHATAN 1375 F HT3-02 CH ND NEG

38 CAMP FOSTER CHATAN 1377 A HT2-02 CH POS NEG

39 CAMP FOSTER CHATAN 1382 A HT3-02 CH ND NEG

40 CAMP FOSTER LESTER (NEW) 6178 D JB3-82 ND NEG

41 CAMP FOSTER LESTER (NEW) 6179 A JB3-82 ND NEG

42 CAMP FOSTER LESTER (NEW) 6180 A JB3-82 ND NEG

43 CAMP FOSTER LESTER (NEW) 6180 D JB3-82 ND NEG

44 CAMP FOSTER LESTER (NEW) 6181 A JB3-82 ND NEG

45 CAMP FOSTER LESTER (NEW) 6181 D JB3-82 ND NEG

46 CAMP FOSTER LESTER (NEW) 6182 D JB3-82 ND NEG

47 CAMP FOSTER LESTER (NEW) 6186 D JB3-82 ND NEG

48 CAMP FOSTER LESTER (NEW) 6187 A JB3-82 ND NEG

49 CAMP FOSTER LESTER (NEW) 6188 A JB3-82 ND NEG

50 CAMP FOSTER LESTER (NEW) 6188 D JB3-82 ND NEG

51 CAMP FOSTER LESTER (NEW) 6189 D JB3-82 ND NEG

52 CAMP FOSTER LESTER (NEW) 6191 D JB3-82 ND NEG

53 CAMP FOSTER LESTER (NEW) 6192 A JB3-82 ND NEG

54 CAMP FOSTER LESTER (NEW) 6192 D JB3-82 ND NEG

55 CAMP FOSTER LESTER (NEW) 6193 A JB3-82 ND NEG

56 CAMP FOSTER LESTER (NEW) 6193 D JB3-82 ND NEG

57 CAMP FOSTER LESTER (NEW) 6194 A JB3-82 ND NEG

58 CAMP FOSTER LESTER (NEW) 6194 D JB3-82 ND NEG

59 CAMP FOSTER LESTER (NEW) 6195 A JB3-82 ND NEG

60 CAMP FOSTER LESTER (NEW) 6195 D JB3-82 ND NEG

61 CAMP FOSTER LESTER (NEW) 6196 D JB3-82 ND NEG

62 CAMP FOSTER LESTER (NEW) 6227 A JB3-82 ND NEG

63 CAMP FOSTER LESTER (NEW) 6228 A JB3-82 ND NEG

64 CAMP FOSTER LESTER (NEW) 6229 D JB3-82 ND NEG

65 CAMP FOSTER LESTER (NEW) 6230 A JB3-82 ND NEG

66 CAMP FOSTER SADA 1631 A HT3-02 SA POS NEG

67 CAMP FOSTER SADA 1631 F HT3-02 SA POS NEG

68 CAMP FOSTER SADA 1636 A HT2-02 SA POS NEG

69 CAMP FOSTER SADA 1637 A HT2-02 SA POS NEG

70 CAMP FOSTER SADA 1637 C HT2-02 SA POS NEG

71 CAMP FOSTER SADA 1638 A HT2-02 SA POS NEG

72 CAMP FOSTER SADA 1638 F HT2-02 SA POS NEG

73 CAMP FOSTER SADA 1639 C HT2-02 SA POS NEG

74 CAMP FOSTER SADA 1640 A HT2-02 SA POS NEG

75 CAMP FOSTER SADA 1640 F HT2-02 SA POS NEG

76 CAMP FOSTER SADA 1641 B HT2-02 SA POS NEG

77 CAMP FOSTER SADA 1643 A HT2-02 SA POS NEG

78 CAMP FOSTER SADA 1662 E HT2-02 SA POS NEG

79 CAMP FOSTER SADA 1663 D HT2-02 SA POS NEG

80 CAMP FOSTER SADA 1664 B HT2-02 SA POS NEG

81 CAMP FOSTER SADA 1665 A HT2-02 SA POS NEG

82 CAMP FOSTER SADA 1665 D HT2-02 SA POS NEG

83 CAMP FOSTER SADA 1666 A HT2-02 SA POS NEG

84 CAMP FOSTER SADA 1667 A HT2-02 SA POS NEG

85 CAMP FOSTER SADA 1668 A HT2-02 SA POS NEG

86 CAMP MCTUREOUS MCTUREOUS 5042 F JB4-90P10 POS NEG

87 CAMP MCTUREOUS MCTUREOUS 5043 D JB4-90P10 POS NEG

88 CAMP MCTUREOUS MCTUREOUS 5044 A JB4-90P10 POS NEG

89 CAMP MCTUREOUS MCTUREOUS 5045 A JB4-90P10 POS NEG

90 CAMP MCTUREOUS MCTUREOUS 5058 F JB4-90P10 POS NEG

91 CAMP MCTUREOUS MCTUREOUS 5059 A JB4-90P10 A POS NEG

92 CAMP MCTUREOUS MCTUREOUS 5059 C JB4-90P10 A POS NEG

93 KADENA BEESON 9462 A JA4-78P4 ND NEG

94 KADENA BEESON 9462 D JA4-78P4 ND NEG

95 KADENA BEESON 9463 A JA4-78P4 ND NEG

96 KADENA BEESON 9463 D JA4-78P4 ND NEG

97 KADENA BEESON 9465 A JA4-78P4 ND NEG

98 KADENA BEESON 9466 B JA4-78P4 ND NEG

99 KADENA BEESON 9467 A JA4-78P4 ND NEG

100 KADENA BEESON 9468 A JA4-78P4 ND NEG

101 KADENA BEESON 9469 B JA4-78P4 ND NEG

102 KADENA BEESON 9470 A JA4-78P4 ND NEG

103 KADENA BEESON 9470 D JA4-78P4 ND NEG

104 KADENA BEESON 9471 A JA4-78P4 ND NEG

105 KADENA BEESON 9471 D JA4-78P4 ND NEG

106 KADENA BEESON 9472 A JA4-78P4 ND NEG

107 KADENA BEESON 9472 D JA4-78P4 ND NEG

108 KADENA BEESON 9473 D JA4-78P4 ND NEG

109 KADENA BEESON 9474 A JA4-78P4 ND NEG

110 KADENA BEESON 9474 D JA4-78P4 ND NEG

111 KADENA

KADENA

HEIGHTS 2438 A JB2-84P7 ND NEG

112 KADENA

KADENA

HEIGHTS

2439 A JB2-84P7 ND NEG

113 KADENA

KADENA

HEIGHTS

2439 B JB2-84P7 ND NEG

114 KADENA

KADENA

HEIGHTS

2441 B JB2-84P7 ND NEG

115 KADENA KADENA

HEIGHTS

5355 A JB2-84P7 ND NEG

116 KADENA KADENA

HEIGHTS

5355 B JB2-84P7 ND NEG

117 KADENA

KADENA

HEIGHTS 5356 A JB2-84P7 ND NEG

118 KADENA

KADENA

HEIGHTS

5358 A JB2-84P7ADA ND NEG

119 KADENA

KADENA

HEIGHTS

5401 A JB2-84P7ADA ND NEG

120 KADENA

KADENA

HEIGHTS

5403 A JB2-84P7 ND NEG

121 KADENA KADENA

HEIGHTS

5405 A JB2-84P7 ND NEG

122 KADENA KADENA

HEIGHTS

5405 B JB2-84P7 ND NEG

123 KADENA

KADENA

HEIGHTS 5443 A JB2-84P7 ND NEG

124 KADENA

KADENA

HEIGHTS

5444 A JB2-84P7 ND NEG

125 KADENA

KADENA

HEIGHTS

5445 A JB2-84P7 ND NEG

126 KADENA

KADENA

HEIGHTS

5446 A JB2-84P7ADA ND NEG

127 KADENA

KADENA

HEIGHTS

5447 A JB2-84P7 ND NEG

128 KADENA KADENA

HEIGHTS

5447 B JB2-84P7 ND NEG

129 KADENA KADENA

HEIGHTS

5448 A JB2-84P7 ND NEG

130 KADENA

KADENA

HEIGHTS 5448 B JB2-84P7 ND NEG

131 KADENA

KADENA

HEIGHTS

5449 A JB2-84P7 ND NEG

132 KADENA

KADENA

HEIGHTS

5449 B JB2-84P7 ND NEG

133 KADENA

KADENA

HEIGHTS

5450 A JB2-84P7 ND NEG

134 KADENA KADENA

HEIGHTS

5450 B JB2-84P7 ND NEG

135 KADENA KADENA

HEIGHTS

5451 A JB2-84P7 ND NEG

136 KADENA

KADENA

HEIGHTS 5451 B JB2-84P7 ND NEG

137 KADENA

O'DONNELL

GARDEN

1000 D JC3-85P8 OG ND NEG

138 KADENA

O'DONNELL

GARDEN

1001 A JC3-85P8 OG ND NEG

139 KADENA

O'DONNELL

GARDEN

1002 A JC3-85P8 OG ND NEG

140 KADENA O'DONNELL

GARDEN

1003 A JC3-85P8 OG ND NEG

141 KADENA O'DONNELL

GARDEN

1007 B JB2-84P9 KAB ND NEG

142 KADENA

O'DONNELL

GARDEN 1008 C JC3-85P8 OG ND NEG

143 KADENA

O'DONNELL

GARDEN

1012 D JC3-85P8 OG ND NEG

144 KADENA

O'DONNELL

GARDEN

1014 C JC3-85P8 OG ND NEG

145 KADENA

O'DONNELL

GARDEN

1015 B JB2-84P9 KAB ND NEG

146 KADENA

O'DONNELL

GARDEN

1016 A JC3-85P8 OG ND NEG

147 KADENA O'DONNELL

GARDEN

1062 A JC3-85P8 OG ND NEG

148 KADENA O'DONNELL

GARDEN

1088 D JC3-85P8 OG ND NEG

149 KADENA

O'DONNELL

GARDEN 1090 D JC3-85P8 OG ND NEG

150 KADENA

O'DONNELL

GARDEN

1092 D JC3-85P8 OG ND NEG

151 KADENA

O'DONNELL

GARDEN

1094 A JC3-85P8 OG ND NEG

152 KADENA

O'DONNELL

GARDEN

1094 D JC3-85P8 OG ND NEG

153 KADENA STEARLEY

HEIGHTS

1719 A JC3-80(A)P6 ND NEG

154 KADENA STEARLEY

HEIGHTS

1719 D JC3-80(A)P6 ND NEG

155 KADENA

STEARLEY

HEIGHTS 1723 A JC3-80(A)P6 ND NEG

156 KADENA

STEARLEY

HEIGHTS

1854 D JC3-80(A)P6 ND NEG

157 KADENA

STEARLEY

HEIGHTS

1855 A JC3-80(A)P6 ND NEG

158 KADENA

STEARLEY

HEIGHTS

1856 A JC3-80(A)P6 ND NEG

159 KADENA STEARLEY

HEIGHTS

1857 A JC3-80(A)P6 ND NEG

160 KADENA STEARLEY

HEIGHTS

1857 D JC3-80(A)P6 ND NEG

161 KADENA

STEARLEY

HEIGHTS 1858 A JC3-80(A)P6 ND NEG

162 KADENA

STEARLEY

HEIGHTS

1858 D JC3-80(A)P6 ND NEG

163 KADENA

STEARLEY

HEIGHTS

1859 A JC3-80(A)P6 ND NEG

164 KADENA

STEARLEY

1859 D JC3-80(A)P6 ND NEG

165 KADENA

WASHIGHTON

HEIGHTS

8101 D JA2-77P9 ND NEG

166 KADENA WASHIGHTON

HEIGHTS

8102 A JA2-77P9 ND NEG

167 KADENA WASHIGHTON

HEIGHTS

8102 B JA2-77P9 ND NEG

168 KADENA

WASHIGHTON

HEIGHTS 8103 A JA2-77P9 ND NEG

169 KADENA

WASHIGHTON

HEIGHTS

8103 B JA2-77P9 ND NEG

170 KADENA

WASHIGHTON

HEIGHTS

8104 B JA2-77P9 ND NEG

171 KADENA

WASHIGHTON

HEIGHTS

8105 A JA2-77P9 ND NEG

172 KADENA WASHIGHTON

HEIGHTS

8105 B JA2-77P9 ND NEG

173 KADENA WASHIGHTON

HEIGHTS

8106 A JA2-77P9 ND NEG

174 KADENA

WASHIGHTON

HEIGHTS 8106 B JA2-77P9 ND NEG

175 KADENA

WASHIGHTON

HEIGHTS

8107 A JA2-77P9 ND NEG

176 KADENA

WASHIGHTON

HEIGHTS

8107 B JA2-77P9 ND NEG

177 KADENA

WASHIGHTON

HEIGHTS

8114 B JA2-77P9 ND NEG

178 KADENA WASHIGHTON

HEIGHTS

8115 B JA2-77P9 ND NEG

179 KADENA WASHIGHTON

HEIGHTS

8116 A JA2-77P9 ND NEG

180 KADENA

WASHIGHTON

HEIGHTS 8116 B JA2-77P9 ND NEG

181 KADENA

WASHIGHTON

HEIGHTS

8117 B JA2-77P9 ND NEG

182 KADENA

WASHIGHTON

HEIGHTS

8118 B JA2-77P9 ND NEG

183 KADENA

WASHIGHTON

8119 A JA2-77P9 ND NEG

184 KADENA

WASHIGHTON

HEIGHTS

8119 B JA2-77P9 ND NEG

185 KADENA WASHIGHTON

HEIGHTS

8120 A JA2-77P9 ND NEG

186 KADENA WASHIGHTON

HEIGHTS

8120 B JA2-77P9 ND NEG

187 KADENA

WASHIGHTON

HEIGHTS 8121 B JA2-77P9 ND NEG

188 KADENA

WASHIGHTON

HEIGHTS

8122 A JA2-77P9 ND NEG

189 KADENA

WASHIGHTON

HEIGHTS

8122 B JA2-77P9 ND NEG

190 KADENA

WASHIGHTON

HEIGHTS

8124 A JA2-77P9 ND NEG

191 KADENA WASHIGHTON

HEIGHTS

8202 A JA3-83P8 ND NEG

192 KADENA WASHIGHTON

HEIGHTS

8202 D JA3-83P8 ND NEG

193 KADENA

WASHIGHTON

HEIGHTS 8203 A JA3-83P8 ND NEG

194 KADENA

WASHIGHTON

HEIGHTS

8208 D JA3-83P8 ND NEG

195 KADENA

WASHIGHTON

HEIGHTS

8209 A JA3-83P8 ND NEG

196 KADENA

WASHIGHTON

HEIGHTS

8209 D JA3-83P8 ND NEG

197 KADENA WASHIGHTON

HEIGHTS

8210 A JA3-83P8 ND NEG

198 KADENA WASHIGHTON

HEIGHTS

8211 D JA3-83P8 ND NEG

199 KADENA WASHIGHTON

HEIGHTS

8212 A JA3-83P8 ND NEG

200 KADENA WASHIGHTON

8212 D JA3-83P8 ND NEG

2.0 DESCRIPTION OF WORK: The work consists of the following elements. All replacement work is in kind.

2.1 General:

a. Install radon mitigation system, housing units (single story).

b. Install radon mitigation system, housing units (two story).

c. Install radon mitigation system, housing tower (first or 2nd floor).

d. Unit with crawl space – mitigation technique shall be sub-slab suction, depressurization, or positive pressure ventilation.

e. Unit without crawl space, slab-on-grade or foundation shall use sub-slab suction or depressurization method.

f. Seal cracks or leaks underneath the crawl space.

g. Contractor shall use the best management practice to successful reduce radon

2.2 Architectural:

a. Remove and replace patio floor tile and/or ceiling, as necessary.

b. Repair and patchwork to match existing adjacent finishes.

c. Paint the 4” Ø PVC radon exhaust pipe, cover and other accessories with the matching exterior paint color (fans are 4”, 6” and 8”, they will be connected to coupling to reduce to 4”).

2.3 Civil:

a. Excavation, removal, disposal, and back fill of soil.

b. Provide aggregate.

c. Remove and replace sodding including topsoil for damaged surface.

d. Drilling the core at exterior concrete wall under floor slab to provide 4” Ø PVC radon exhaust pipe and seal around the PVC pipe.

e. Restore the site.

2.4 Electrical:

a. Provide electrical power for exhaust fan. The interior conduit shall run above ceiling as much as possible.

b. Interior exposed conduit shall be metal wire mold, and exterior exposed conduit shall be rigid steel galvanize (thick wall).

c. Provide a circuit breaker 1P, 125V, 20A with enclosure by the existing circuit breaker panel for power supply of new exhaust fan. Install additional circuit breaker as required.

d. Assume approximate distance from new exhaust fan to existing circuit breaker panel for 2 Story unit: 32m (Assume 29m of conduits run above ceiling).

e. Conduct insulation resistance test for all new electrical wires and submit test result.

f. Minimum resistance shall be 250,000 ohms.

g. Install a radon monitor system such as a visual gauge that tells if your radon fan is running and at what static pressure.

h. Weatherproof cover from inclement weather.

i. Cooper pipe to connect the U-tube manometer.

2.5 Mechanical:

a. Install radon fans sufficient to support the unit square footage as required.

b. Provide 4” Ø (SCH 40) PVC radon exhaust pipe, fittings, and pipe support from the radon suction pit under the floor slab to above the roof.

c. Install/drill brackets for radon exhaust/vent pipe:

d. Single Story - drill four 2 holes bracket each

e. Two story - drill six 2 holes bracket each

f. Tower drill six 2 holes bracket each (the vent on towers must be separated at least 3 meters from any opening of the building)

g. Provide weatherproof type radon exhaust fan with radon system monitor and all associated accessories. Provide corrosion-proof protective cover for fan with paint to match existing exterior wall.

h. Provide rain cap with bird screen for radon exhaust outlet pipe.

i. Install 4” Ø (SCH 40) PVC inlet and outlet vent lines into the crawl space (underneath the house).

j. When building concrete manholes are present/available. Contractor shall cut a 4” Ø hole from each end, (2/building).

k. The height of inlet & outlet vent line is 18” connect to 180-degree elbow with steel net.

l. The depth is 12” to 18” deep with 90-degree elbow connected to 3’ to 4’ foot line into crawl space.

m. Bracket for vents - drill four 2 holes bracket each.

2.6 Fire Protection System: N/A

2.7 Asbestos & LBP

a. Government will provide ACM & LBP sampling test result when available.

b. Contractor may request to sample and test as required and requested by government.

c. Asbestos & LBP Abatement: As required to include disposal of the hazardous waste.

2.8 Post-Installation Radon Testing Requirement:

a. Test radon levels in each dwelling unit after each new installation or repair/upgrade of existing mitigation system and record time and date for each unit.

b. Post-installation testing should begin no sooner than 24 hours and no later than 30 days after installation.

c. Radon tests shall follow EPA guidelines and shall be continuously monitoring utilizing EPA

Approved Radon Detector (long term detector) and are set out for a minimum of 91 days. One detector shall be installed per 186 square meters or 2,000 square feet.

d. Detectors should be placed in the lowest level of the facility which contains a room that is used regularly (used at least 4 hours or more) (e.g., living room).

e. Detectors should not be placed in a room or wall that has any type of exhaust or ventilation nearby

(e.g., kitchen, bathroom).

f. Detectors should be placed where it will not be disturbed during the measurement period and where there is adequate room/space for the detector.

g. Detectors should not be placed near drafts caused by heating, ventilating, and air conditioning vents, doors, fans, and windows. Locations near heat such as appliances or direct sunlight, and high humidity areas should be avoided.

h. Because some detectors are sensitive to increased air motion, fans should not be operated in the test area.

i. Measurement location should not be within 3 ft (90 cm) of the doors and windows or other potential openings to the outdoors.

j. The detector should be placed at least 20 in (50 cm) from the floor, and at least 4 in (10 cm) from other objects. On walls, place at the breathing zone height which is approximately 5 to 6 feet (1.6 m to 1.8 m).

k. Ensure date and time of install and retrieval are recorded for each detector.

l. Ensure detectors are re-sealed using a re-sealable bag inside the home.

m. Provide & install additional 10% (round off to lowest number) for missing or lost or designate radon test device.

n. Provide radon long term (91 days) testing with lab results for East Futenma Housing Area (56UN).

o. Submit results of radon tests to the government within 7 calendar days of receipt from the testing facility.

2.9 Lightning Protection System: N/A

3.0 PROJECT SCHEDULE AND TIME CONSTRAINTS:

3.1 Once the contractor received award documents from 18 CONS/PKC. Contractor shall schedule a pre-construction conference with the government within fourteen (14) calendar days. Notice To Proceed (NTP) will be issue after the completion of the pre-construction meeting and only once.

3.2 The contractor shall prepare meeting minutes summarizing all parties’ comments and submit to

Contracting Office within three business days after each meeting.

3.3 Contract Completion: Contractor shall complete within the 360 calendar days (88 Survey & DSGN and

272 CNST) this includes procurement of material, material submittals, government materials submittal review, construction time, radon test results and unfavorable weather, see section 5.0 for details on options.

4.0 DESIGN REQUIREMENTS:

4.1 Designer certification requirement for design engineers: The Government minimum requirement of

Design Engineers is indicated in the Qualification Matrix below. All design professionals shall have current registration to practice in the United States or Japan. Approval shall be indicated on all documents by having the professional signature or stamp/seal of the architect or engineer with personal signature over same appearing on all sheets as applicable to their specialties.

Experience Matrix

Area Qualifications

Architectural Graduate Architect with professional licensure/registration or 1st

Class Kenchikushi and 5 years’ experience

Electrical

Graduate Electrical Engineer with professional licensure/registration or 1st

Class Denkishi or Registered Electrical Engineering Consulting Manager and 5 years’ experience

Mechanical

Graduate Mechanical Engineer with professional licensure/registration or 1st

Class Doboku Sekou Kanrigishi or Mechanical engineering Consulting Manager and 5 years’ experience.

Radon Technician

Individual certified from the National Radon Proficiency Program (NRPP) or a

National Radon Safety Board (NRSB) Radon Mitigation Specialist (RRS) certification. Contractor shall provide proof of certification at the time of bidding. with minimum of 2 years’ experience.

4.2 Design Schedule: 8 8 c a l e n d a r d a y s

SCHEDULE

SHALL BE COMPLETED WITHIN

Survey & 95% Design 60 Calendar days after the NTP

Government Review 7

Submit Revised 95% Design Documents 14 Calendar days after 95% design approval

Government Review 7

DESIGN SUBTOTAL: 88 CALENDAR DAYS

4.3 Pre-Design Meeting: A pre-design meeting is required to assure that all requirements and procedures are understood.

4.4 Project design will be coordinated with the 18CONS/PKC, Using Agency, DET 2 OL-B and other agencies involved in project reviews.

4.5 The design for this project shall provide for the completion of the work identified on this Statement of Work

(SOW). All design work shall be in accordance with the most current applicable criteria. Any review by the

Government of technical items shall not be construed to relieve the Contractor of responsibility for technically correct and complete documents in compliance with applicable codes, industry standards, and the intent of this

SOW. Government shall not be responsible for any additional costs which could have been avoided through an appropriate contractor’s design.

4.6 Actual Field Investigation: Actual investigation by the Contractor must be conducted for 95% design. A joint site visit with Government Agencies (DET 2 OL-B and the Using Agency) prior to submittal of approved scheme for confirmation of work tasks required shall be accomplished. The Contractor shall determine how the project can best be accomplished. The Contractor shall perform environmental archaeological monitoring in accordance with 718 CES Environmental requirements.

4.7 Every effort shall be exerted to develop a 95% design within the project criteria and instructions so that the project may be executed within the target cost. The design of this project shall be the most economical with necessary consideration being given to the most efficient utilization of all materials consistent with the design criteria.

4.8 Documents Required at 95%: The documents that shall be submitted are as follow:

(1) Specifications

(2) Project Drawings

(3) Environmental Analysis – If required

(4) Project documents.

(4.1) Schedule of Material Submittals (AF Form 66)

(4.2) Progress Schedule and Phasing Plan

4.9 Detailed design analysis/calculations shall be included with the 95% design submittal. Project documents and drawings to be submitted for each design stage are as follows:

NUM SUBMITTAL DESIGN STAGE

35% 35%

Rev 65%

65%

Rev 95%

95%

Rev Set

1 B1 Drawings (full size)

2 B2 Drawings (half size) 1 1 2

3 Specifications 1 1 2

Annotated Design Review

Comments

5 Design Analysis/Calculations

Email (all drawings, specs, calculation, reports documents, etc) thru DOD

SAFE

7 Draft DD Form 1354 2

AF Form 3064 Progress

Schedule

9 ACM/LBP Reports

Environmental Protection

Plan 1 1

• Note: Submit one set (hard copy and email electronic As-Built Drawing thru DoD SAFE) submittals to 18

CONS/PKC and the remainder to PM or 718 CES/CENMA directly at each design stage.

• Submittal shall be Windows compatible CD-ROM with drawings in US version of AutoCAD and PDF, the complete specifications in Microsoft Word, and AF Form 66 in Microsoft Excel.

4.10 All equipment and materials installed or utilized for this project shall be in strict compliance with the Air

Force’s policy concerning Ozone Depleting Chemicals.

4.11 As-built drawings will be provided to the Contractor for reference in their present form. The Government bears no responsibility for the accuracy of these drawings. Actual field investigation and survey of the facility must be conducted by the Contractor to ascertain existing conditions before start of design.

4.12 Civil, Architectural and Structural will be stamped, certified, dated and signed by appropriately licensed

Architects and Engineers. Proper credentials shall be included prior, for approval. Construction documents shall be stamped, signed, and dated (in ink) prior to construction and upon completion of the project.

4.13 Drawing Units and Scale: All drawings shall be in English unit with a Metric System (SI) conversion or vice versa. A generic graphic scale shall be provided at the bottom right of the drawing sheet and separately for each drawing sections that requires different scale.

4.14 As-built drawings will be provided to the contractor for reference in their present form when available.

The government bears no responsibility for the accuracy of these drawings.

4.15 The Contractor shall attend joint review meetings of the project upon notification. The contractor shall submit minutes of any meetings held related to this project to the Contracting Officer and DET 2 OL-B not later than seven (7) working days after the event.

5.0 CONSTRUCTION REQUIREMENTS:

5.1 Construction Schedule: The Contractor can begin on-site work with approval from the Government upon satisfactory response actions at the Notice to Proceed (NTP) conference. The Contractor shall be allowed to work 0730 to 1830 hours, Monday through Saturday excluding U.S. Federal Holidays.

5.2 When U.S. Government legal holidays occur on Saturday or Sunday, the preceding Friday or following

Monday shall not be considered workdays until changes in work schedules are approved by the Contracting

Officer. No work will be allowed on Friday if the preceding Thursday is a U.S. Government legal holiday. The

Contractor is to account for this in his construction schedule and offer. Any deviations from the above shall be submitted in writing to the Contracting Officer for approval on a case-by-case basis.

5.3 Performance Time: The contractor shall be completed within 272 calendar days. This includes material submittals, government material submittal review, procurement of materials, 7 days for unfavorable weather and construction time.

NUM SCHEDULE DAY COMPLETED WITHIN

1 Material/Shop Drawings Submittal 21 Calendar days

2 Government Review 7 Calendar days

3 Procurement of materials 45 Calendar days

4 Unfavorable Weather 7 Calendar days

5 Construction Site Work 62 Calendar days

6 Post Testing Over 91 days & Lab Result. 130 Calendar days

Total Performance Time: 272 Calendar days

5.4 During project activities the Contractor will be responsible for ensuring Work Plan compliance, and construction quality, complying with Base procedures regarding security, Base Access, and Safety; and ensuring safe work practices are employed.

5.5 Construction Project Signs: N/A

5.6 Storage of Material, Latrines and Field Office: N/A

5.7 Cleanup: The Contractor shall always keep the work area, including storage areas, free from accumulations of waste materials. Before completing the work, the Contractor shall remove from the work and premises any rubbish, tools, scaffolding, equipment, and materials that are not the property of the Government.

Upon completing the work, the Contractor shall leave the work area in a clean, neat, and orderly condition satisfactory to the Contracting Officer.

5.8 AF Form 66 and AF Form 3000—Contractor shall be responsible to edit these submittal forms in accordance with actual requirements and schedule of the project and shall be submitted for government approval.

6.0 ENVIRONMENTAL REQUIREMENTS:

6.1 Conformance with Environmental, Safety and Occupational Health Management System

(ESOHMS): Contractor shall perform all work under this contract consistent with the relevant policy and objectives identified within Kadena AB, see Attachment 1.5 Environmental Section 01 57 19.01

30, Temporary Env Controls (2022-07 or Latest Edition).

a. Section 01 57 19.01 30, Temporary Env Controls (2022-07)

b. Section 02 82 00, ACM (2019-08)

c. Section 02 82 00.00 30 ACM Supp (2020-03)

d. Section 02 82 00.00 30 Attachments

e. Section 02 83 00, LBP (2019-08)

f. Section 02 83 00.00 30 Lead Supp (2020-02)

6.2 Waste Disposal:

1. All other items for landfill disposal not addressed, shall be encapsulated according to the contractor’s agreement with the landfill management.

2. All work and waste disposal preparations shall conform to applicable OSHA and EPA Regulations, JEGS C15, the Japan Waste Management and Cleaning Act, and Okinawa Prefecture Administrative

Regulations.

7.0 SAFETY:

7.1 The contractor shall comply with all applicable federal, state, and local safety requirements. The contractor is also required to comply with the American General Contractors' Safety Manual and the Occupational Safety and Health Act (OSHA), see reference sheet.

7.2 Confined Space: The contractors and sub-contractors entering confined spaces on Kadena AB, Japan is responsible for the safety of their personnel and for their space program as outlined in AFI 91- 203 (see reference sheet). The primary contractor is responsible for all sub-contractor confined space operations.

8.0 CLOSE-OUT REQUIREMENTS:

8.1 PRE-FINAL INSPECTION:

a. The Contractor shall conduct a pre-final walk-through inspection in the presence of COR, and PM in coordination with R&O SMEs and publish the pre-final inspection findings in a pre-final inspection report. The pre-final inspection shall be conducted a minimum of 30 calendar days before the final inspection date. A Beneficial Occupancy Determination (BOD) may be required for certain areas in the event it is in the best interest of the government to utilize the designated BOD areas.

b. Contractor shall submit an intermediate DD Form 1354 for Real Property review, to make sure all line items are correct except for block 16 and 18. If there are exterior new/removed construction features in the project, provide preliminary civil as-built drawings to 718 CES/CENME (GeoBase office), and see attached DD Form 1354 workflow.

8.2 FINAL INSPECTION: The Contractor shall conduct a final inspection in the presence of CO, PM, COR in coordination with R&O SMEs and publish the findings in a final inspection report in accordance with the format specified at the pre-construction conference and the RFP. The inspection shall concentrate on the items identified at the pre-final inspection and recorded in the pre-final report. The final inspection report shall certify that all items of the work plan have been implemented, and that the construction is complete.

8.3 FINAL PAYMENT:

a. As-Built Documents: The Contractor shall provide the corrected contract drawings in white paper and email all drawings in electronic CADD and PDF (stamp As- built/date) and all documents in WORD or

EXCEL and PDF thru DoD Safe. All as-built files shall meet latest 718 CES Electronic As-built Naming

Standard (PDF and CADD) see attached. Contractor shall provide all the approved material catalog cuts and maintenance manuals in binders to DET 2 OL-B. The final as-built digital copies of the documents and drawings shall be in the following format:

(1) Drawings AutoCAD and PDF

(2) Specifications Microsoft Word and PDF

(3) Environmental Analysis Microsoft Power Point and PDF

(4) Final Report Microsoft Word and PDF

b. The Contractor shall submit final (DD Form 1354) Transfer and Acceptance of Real Property to Base

Civil Engineer (BCE) or other appropriate organization for signature and acceptance.

c. The Contractor shall not receive final payment until all approved material submittals, As-Built

Drawings, O&M manuals, DD Form 1354 are turned into the US Government and final inspection punched list items are accomplished.

8.4 DELIVERY/WARRANTY:

a. The Contractor shall provide a one-year warranty or manufacturer’s standard commercial warranty, whichever is longer. This warranty shall include a one-year workmanship warranty. The warranty period shall start from the date of system and/or project acceptance. The Contractor shall provide written procedures and required information for warranty services at or prior to site acceptance.

b. The Contractor shall complete all inspection and commissioning requirements prior to final inspection. The warranty shall be issued in accordance with FAR 52.246.21. Extended warranties offered by the Contractor and its subcontractors or suppliers may be accepted at the Government’s discretion. Post

Acceptance Inspection will be conducted with the user and if required with the contractor at the 9-month period of the warranty to discuss any repair items needed. The Contractor will provide throughout the warranty period a point of contact in the event any repairs are needed.

9.0 OTHER REQUIREMENTS:

9.1 Progress Schedules: The contractor shall provide a Contract Progress Schedule (AF Form 3064) in accordance with the basic contract specification, General Requirements for projects with performance period over

60 calendar days. Contract Progress Schedule shall be submitted to the Contracting Officer within 14 calendar days prior to start of on-site work.

9.2 Submittals: The contractor shall provide the Government with Material Approval Submittals (AF Form

3000) in accordance with basic contract specification, General Requirements and as stated in Schedule of Material

Submittals (AF Form 66).

REFERENCE: Use the most current Code, Regulations and Guidance as it applies:

➢ SPECS – General, Elec, Earthwork (sect 1 2 3), exclude Division 31 – Earthwork, section 3.2.2 para. 14, page

36 from this SOW, all other applies

➢ EPP Submittal Register Guideline

➢ Unified Master Reference List https://www.wbdg.org/ccb/DOD/UMRL/UMRL.pdf

➢ Unified Facilities Guide Specifications (UFGS): http://wbdg.org/ccb/browse_org.php?o=70

➢ Unified Facilities Criteria (UFC): http://wbdg.org/ccb/browse_cat.php?o=29&c=4

➢ Air Force Engineering Technical Letters (ETL’s):

http://www.wbdg.org/ccb/browse_cat.php?o=33&c=125

➢ International Building Code (IBC)

➢ National Fire Protection Association (NFPA)

➢ The National Environmental Health Association (NEHA) National Radon Proficiency Program

➢ The National Radon Safety Board (NRSB)

➢ AFI 48-148, Ionizing Radiation Protection

➢ IOH-SD-BR-SR-2005-0004, Bioenvironmental Engineer’s Guide to Ionizing Radiation

➢ USAF OEF OEHL-87-132RZ0111KRD, The Bioenvironmental Engineer’s Primer to the Air Force Radon

Assessment and Mitigation Program (RAMP)

➢ EPA 402-R-93-003, Protocols for Radon Measurement in Homes

➢ EPA 402-R-92-004, Indoor Radon and Radon Decay Product Measurement Device Protocols

➢ EPA 402-R-93-078, Radon Mitigation Standards

➢ EPA 625-R-93-011, Radon Reduction Techniques for Existing Detached Houses

➢ ASTM E 2121-12, Standard Practice for Installing Radon Mitigation Systems in Existing Low-Rise

Residential Buildings, current version.

➢ UFC 3-800-10N, Environmental Engineering for Facility Construction Final

➢ UFC 3-101-01, Architecture,

➢ UFGS 31 21 13 Radon Mitigation

➢ UFGS 02 82 13 Asbestos (JEGS)

➢ National Electrical Code (NEC) Handbook

➢ UFC 3-501-01 Electrical Engineering

➢ UFC 3-520-01 Interior Electrical Systems

➢ UFC 4-711-01 Family Housing

➢ Air Force Housing Guide

➢ Air Force Instructions (AFI)

➢ Japan Environmental Governing Standards (JEGS)

➢ Kadena Design Guide

➢ Bioenvironmental Engineering Guidebook for Radon Management 3rd Edition or most current

ATTACHMENTS

Attach 1.1 MAP, LXEZ254573, RADON MITIGATION SYSTEM

Attach 1.2 Bioenvironmental Engineering Guidebook for Radon Management 3rd Edition (1)

Attach 1.3 HISTORICAL, AS-BUILT DRAWINGS, RADON PROJECTS

Attach 1.4 HISTORICAL, ACM & LBP, EXTERIOR WALL, SAMPLE RESULT, VAR LOC, 11-03-2023

Attach 1.5 SECTION 01 57 19.01 30, TEMP ENV CONTROLS (2022-07), ACM & LBP, COMBINE, 08-05-