Relocation of storm sewer infrastructure at dc waters cso 018 drop shaft site (clean rivers div h). Sewer infrastructure to be relocated to accommodate construction of cso 018 slurry wall, permitted under tops 97241. Portions of existing 18" and 27" storm pipes and one associated manhole to be demolished or capped and abandoned in place. New 18" and 27" storm pipe and two new manholes to be installed. Pavement on se/sw blvd and on-ramp to be restored upon completion of sewer relocations. All work to take place in fall 2014, prior to re-opening of se/sw blvd. Mot approved under tops 97241. Please note: mot for re-opened boulevard will not come into effect under this permit. This work must be completed prior to re-opening of se/sw boulevard.

Revision to construction permit #97241 to reflect new staging area and mot for cso 018 shaft site for dc clean rivers project - division h (anacostia river tunnel). Revised staging area & mot will be implemented per ddot instruction at coordination meeting of 9/23/14 (notes attached). Revisions to go into effect upon re-opening of se/sw boulevard at end of 2014. Contractor to maintain two open lanes on westbound on-ramp to se/sw blvd, and two open lanes on eastbound off-ramp from the boulevard to pennsylvania ave. Primary site access to/from lower staging area will be via rfk stadium access road under barney circle. Flagger operation to be used for any trucks entering eastbound roadway from upper or lower staging area.

Establishment of construction staging area in public space for construction of cso 018 slurry wall, part of dc waters anacostia river tunnel project (dc clean rivers div h). Site will occupy grassy area on southwest side of barney circle (upper level), and grassy infield between westbound on-ramp and westbound travel lanes of se/sw freeway (lower level). Slurry wall support of excavation plans included for ddot review: structural slurry wall of 36" thick 5000psi reinforced concrete, to support excavation of 36. 5 diameter shaft to 125 below ground surface. Site work includes: upper level: two temporary curb cuts for construction entrances, site will not occupy roadway or sidewalk. Lower level: three light poles to be removed during construction, two sections of curb to be cut along westbound freeway. Slurry wall will be constructed entirely below grade on lower level. Slurry wall footprint encroaches into shoulder of westbound freeway. Portions of freeway and ramps will be occupied by c

Installation of geotechnical instrumentation in public space for cso 018 of the anacostia river tunnel (dc clean rivers div h). Work to take place in staging area below and west of barney circle, including in the on-ramp and in the freeway. Proposed work includes the following: the drilling of sixteen (16) borings which includes: seven (7) inclinometers, five (5) extensometers, and four (4) piezometers, to depths ranging from feet to 164 feet below ground surface, boring diameter 6. 25". Vacuum excavation of three (3) utility monitoring points to depths of 3 to 4 feet below ground surface. Installation of twenty-one (21) surface settlement monitoring points. Proposed work to begin in august 2014 and will be coordinated with 11th street bridge contractor who is currently occupying this site area. All instruments will be installed prior to re-opening of se/sw freeway and ramps, therefore mot is unnecessary.

Final restoration for dc waters clean rivers project - div h - cso 018 site at barney circle. Includes installation of sub-grade electrical vault on upper level, curb and pavement restoration, and installation of 18" odor control pipe on barney circle retaining wall. Erosion control and stormwater management measures approved by ddoe under bciv1400026. Ref tops permits 97241, 102082, 113256.

Support of excavation and subsequent construction of near surface structure for dc waters clean river project div h - cso-018 site. Construction of below-grade concrete approach channel, vent chamber, and odor control vault facility, to be installed adjacent to the east bound ramp to the southeast freeway, below barney circle. No change to existing ddoe-approved site plan or ddot-approved mot measures. Construction impact assessment report 4a and 4b submitted to ddot by dc water under separate cover.

Establishment of construction staging area in public space for construction of cso 018 slurry wall, part of dc waters anacostia river tunnel project (dc clean rivers div h). Site will occupy grassy area on southwest side of barney circle (upper level), and grassy infield between westbound on-ramp and westbound travel lanes of se/sw freeway (lower level). Slurry wall support of excavation plans included for ddot review: structural slurry wall of 36" thick 5000psi reinforced concrete, to support excavation of 36. 5 diameter shaft to 125 below ground surface. Site work includes: upper level: two temporary curb cuts for construction entrances, site will not occupy roadway or sidewalk. Lower level: three light poles to be removed during construction, two sections of curb to be cut along westbound freeway. Slurry wall will be constructed entirely below grade on lower level. Slurry wall footprint encroaches into shoulder of westbound freeway. Portions of freeway and ramps will be occupied by c

Installation of geotechnical instrumentation in public space for cso 018 of the anacostia river tunnel (dc clean rivers div h). Work to take place in staging area below and west of barney circle, including in the on-ramp and in the freeway. Proposed work includes the following: the drilling of sixteen (16) borings which includes: seven (7) inclinometers, five (5) extensometers, and four (4) piezometers, to depths ranging from feet to 164 feet below ground surface, boring diameter 6. 25". Vacuum excavation of three (3) utility monitoring points to depths of 3 to 4 feet below ground surface. Installation of twenty-one (21) surface settlement monitoring points. Proposed work to begin in august 2014 and will be coordinated with 11th street bridge contractor who is currently occupying this site area. All instruments will be installed prior to re-opening of se/sw freeway and ramps, therefore mot is unnecessary.

Soil boring for temporary dewatering activities at cso 018 of dc waters clean rivers project - div h. Total of thirteen (13) mud rotary borings with surface casing broken down as follows: six (6) dewatering wells at 165 feet below grade, 16 inches diameter; five (5) additional contingency dewatering wells (if needed); and two (2) monitoring wells at 1 feet below grade, 8 inches diameter. Associated with tops construction permit 97241 for lod, erosion control, mot, etc. Ground and structural monitoring program covered under tops permit 97793.

Relocation of storm sewer infrastructure at dc waters cso 018 drop shaft site (clean rivers div h). Sewer infrastructure to be relocated to accommodate construction of cso 018 slurry wall, permitted under tops 97241. Portions of existing 18" and 27" storm pipes and one associated manhole to be demolished or capped and abandoned in place. New 18" and 27" storm pipe and two new manholes to be installed. Pavement on se/sw blvd and on-ramp to be restored upon completion of sewer relocations. All work to take place in fall 2014, prior to re-opening of se/sw blvd. Mot approved under tops 97241. Please note: mot for re-opened boulevard will not come into effect under this permit. This work must be completed prior to re-opening of se/sw boulevard.

Revision to construction permit #97241 to reflect new staging area and mot for cso 018 shaft site for dc clean rivers project - division h (anacostia river tunnel). Revised staging area & mot will be implemented per ddot instruction at coordination meeting of 9/23/14 (notes attached). Revisions to go into effect upon re-opening of se/sw boulevard at end of 2014. Contractor to maintain two open lanes on westbound on-ramp to se/sw blvd, and two open lanes on eastbound off-ramp from the boulevard to pennsylvania ave. Primary site access to/from lower staging area will be via rfk stadium access road under barney circle. Flagger operation to be used for any trucks entering eastbound roadway from upper or lower staging area.

Establishment of construction staging area in public space for construction of cso 018 slurry wall, part of dc waters anacostia river tunnel project (dc clean rivers div h). Site will occupy grassy area on southwest side of barney circle (upper level), and grassy infield between westbound on-ramp and westbound travel lanes of se/sw freeway (lower level). Slurry wall support of excavation plans included for ddot review: structural slurry wall of 36" thick 5000psi reinforced concrete, to support excavation of 36. 5 diameter shaft to 125 below ground surface. Site work includes: upper level: two temporary curb cuts for construction entrances, site will not occupy roadway or sidewalk. Lower level: three light poles to be removed during construction, two sections of curb to be cut along westbound freeway. Slurry wall will be constructed entirely below grade on lower level. Slurry wall footprint encroaches into shoulder of westbound freeway. Portions of freeway and ramps will be occupied by c

Installation of geotechnical instrumentation in public space for cso 018 of the anacostia river tunnel (dc clean rivers div h). Work to take place in staging area below and west of barney circle, including in the on-ramp and in the freeway. Proposed work includes the following: the drilling of sixteen (16) borings which includes: seven (7) inclinometers, five (5) extensometers, and four (4) piezometers, to depths ranging from feet to 164 feet below ground surface, boring diameter 6. 25". Vacuum excavation of three (3) utility monitoring points to depths of 3 to 4 feet below ground surface. Installation of twenty-one (21) surface settlement monitoring points. Proposed work to begin in august 2014 and will be coordinated with 11th street bridge contractor who is currently occupying this site area. All instruments will be installed prior to re-opening of se/sw freeway and ramps, therefore mot is unnecessary.

Final restoration for dc waters clean rivers project - div h - cso 018 site at barney circle. Includes installation of sub-grade electrical vault on upper level, curb and pavement restoration, and installation of 18" odor control pipe on barney circle retaining wall. Erosion control and stormwater management measures approved by ddoe under bciv1400026. Ref tops permits 97241, 102082, 113256.

Support of excavation and subsequent construction of near surface structure for dc waters clean river project div h - cso-018 site. Construction of below-grade concrete approach channel, vent chamber, and odor control vault facility, to be installed adjacent to the east bound ramp to the southeast freeway, below barney circle. No change to existing ddoe-approved site plan or ddot-approved mot measures. Construction impact assessment report 4a and 4b submitted to ddot by dc water under separate cover.

Support of excavation and subsequent construction of near surface oder control vent facility structure for dc waters clean river project div h - cso-018 site. Application also includes construction of below-grade concrete structures that are installed adjacent to the east bound ramp to the southeast freeway on lower level, and adjacent to pennsylvania ave on upper level of barney circle. No change to existing ddoe-approved site plan or ddot-approved mot measures. Construction impact assessment report 4a and 4b submitted to ddot by dc water under separate cover.

Installation of geotechnical instrumentation in public space for cso 018 of the anacostia river tunnel (dc clean rivers div h). Work to take place in staging area below and west of barney circle, including in the on-ramp and in the freeway. Proposed work includes the following: the drilling of sixteen (16) borings which includes: seven (7) inclinometers, five (5) extensometers, and four (4) piezometers, to depths ranging from feet to 164 feet below ground surface, boring diameter 6. 25". Vacuum excavation of three (3) utility monitoring points to depths of 3 to 4 feet below ground surface. Installation of twenty-one (21) surface settlement monitoring points. Proposed work to begin in august 2014 and will be coordinated with 11th street bridge contractor who is currently occupying this site area. All instruments will be installed prior to re-opening of se/sw freeway and ramps, therefore mot is unnecessary.

Establishment of construction staging area in public space for construction of cso 018 slurry wall, part of dc waters anacostia river tunnel project (dc clean rivers div h). Site will occupy grassy area on southwest side of barney circle (upper level), and grassy infield between westbound on-ramp and westbound travel lanes of se/sw freeway (lower level). Slurry wall support of excavation plans included for ddot review: structural slurry wall of 36" thick 5000psi reinforced concrete, to support excavation of 36. 5 diameter shaft to 125 below ground surface. Site work includes: upper level: two temporary curb cuts for construction entrances, site will not occupy roadway or sidewalk. Lower level: three light poles to be removed during construction, two sections of curb to be cut along westbound freeway. Slurry wall will be constructed entirely below grade on lower level. Slurry wall footprint encroaches into shoulder of westbound freeway. Portions of freeway and ramps will be occupied by c