Scope_of_Work_A_-_H.pdf

Scope of Work “A” - Page 1 of 9

2027 STORMWATER BASIN AND SWALE VEGETATION

MANAGEMENT SERVICES

SCOPE OF WORK “A”

DRY BASIN VEGETATION MAINTENANCE

I. ACTIVITIES TO BE PERFORMED

A. SAFETY

The Contractor shall be solely and completely responsible for safety conditions at the job site, including safety of all persons (including employees) and property during performance of the Work. This requirement shall apply continuously and not be limited to normal working hours.

Safety provisions shall conform to U.S. Department of Labor (OSHA), the State Occupational Safety and Health Act, and all other applicable federal, state, county and local laws, ordinances, codes, those requirements set forth below and any regulations that may be detailed in other parts of these Contract Documents.

When any of these requirements are in conflict, the more stringent requirement shall be followed. The Contractor’s failure to thoroughly familiarize himself with all safety requirements shall not relieve him from compliance with the obligations and penalties set forth herein.

B. DAILY ACTIVITY REPORT

1. Contractor shall complete an electronic activity report for work performed per site visits at the locations listed in II. Dry Basin Vegetation Maintenance List included in SoW “A”. It is the contractor’s responsibility to supply their own electronic device (tablet or smartphone) and internet connection. The following computer apps will be needed: Survey123 and ArcGIS Field Map app.

ACHD will provide an ArcGIS account and training for supervisor(s).

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C. SITE WALKTHROUGHS AND EVALUATIONS

1. Contractor shall complete site walkthroughs and evaluations at each facility with ACHD at a minimum of three (3) times a year. Walkthroughs shall occur in October, April, and July in accordance with III. Minimum Acceptable Schedule included in SoW “A”. Walkthroughs will enable continual communication between the Contractor and ACHD to ensure management success. Evaluations will help direct maintenance efforts to achieve desired outcomes.

2. Contractor shall dedicate personnel to the project as practicable to avoid inefficiencies associated with re-training of new persons in plant identification, site management, and contract scope specifics.

D. WEED REMOVAL - MANUAL

1. Manual weed removal shall be performed at a minimum of every two weeks in April, May, and June, once a month in March, July, August, and September, and as needed in October and November, but not more than once a month in accordance with III. Minimum Acceptable Schedule included in SoW “A”.

2. Methods to be utilized include hand-pulling and other non-mechanical techniques. Manual weeding shall include well-timed removal of weeds to prevent weed seed dispersal and to reduce weed pressure around germinating and transplanted desirable plants. Manual weed removal efforts shall occur in and around desirable vegetation that could be damaged by mechanical methods. Manual weeding shall be utilized to remove low-growing weeds and in areas where the use of mechanical methods poses a safety risk. It is important to distribute seeds from desirable vegetation across poorly established areas.

3. Desirable and undesirable species are identified in, but not limited to, the ACHD Integrative Vegetation Management (IVM) Plant Guide (Appendix A). It is the Contractor’s responsibility to be able to identify desirable versus undesirable plant species as identified in the ACHD IVM Plant Guide.

4. Contractor shall not use fertilizer, pesticides, and/or herbicides of any kind in the stormwater facilities unless specifically requested by ACHD. Care shall be taken to protect all desirable shrubs and trees during all maintenance activities. Desirable vegetation damaged due to Contractor activities shall be replaced by Contractor at Contractor’s expense.

Scope of Work “A” - Page 3 of 9

E. WEED REMOVAL - MECHANICAL

1. Contractor shall cut weeds in vegetated areas at a minimum of every two (2) weeks in April, May, and June, once a month in March, July, August, and September, and as needed in October and November, but not more than once a month in accordance with III. Minimum Acceptable Schedule included in SoW “A”.

2. All equipment shall be cleaned prior to performance of work at a site to prevent inter-site cross-contamination with weed seed to un-infested areas.

3. Mechanical weeding shall include well-timed, site-specific mechanical cutting methods (e.g., line trimmer, brush cutter). To weaken and prevent seed development and dispersal, all cut vegetation must be removed from the facility. No large mowing equipment shall be used within stormwater facilities.

4. Mechanical weeding shall only be performed in areas where desirable vegetation and/or infrastructure will not be damaged. Mechanical weeding areas include but are not limited to fence lines, access roads, ramps, along retaining walls, inlets/outlets, and unlandscaped strips.

5. Contractor shall not use fertilizer, pesticides, and/or herbicides of any kind in the stormwater facilities unless specifically requested by ACHD. Care shall be taken to protect all desirable shrubs and trees during all maintenance activities. Desirable vegetation damaged due to Contractor activities shall be replaced by Contractor at Contractor’s expense.

F. WEED REMOVAL – FLAME WEEDING

1. Flame weeding is an optional weed management method. Contractor must request approval from ACHD prior to flame weeding any stormwater facility.

Flame weeding shall only occur during the months of November, March, April, and/or May in accordance with III. Minimum Acceptable Schedule included in SoW “A”. Flame weeding shall be done in a careful and controlled manner to prevent uncontrolled burning. The goal of flame weeding is to damage the cell structure in the weed’s foliage in an effort to cause the weeds to wilt and die, not to set the plants on fire. Care shall be taken to avoid damaging desirable vegetation.

2. It is the Contractor’s responsibility to obtain the necessary permit(s) required by the city fire department or local fire district. Contractors shall provide a copy of the valid permit(s) if requested by ACHD. As an added precaution, Contractors shall not flame weed if a fire ban is in effect, if the National Fire Danger Rating System is above the low category, and/or if the vegetation within and around the facility is too dry and poses a risk of igniting.

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G. WOOD MULCH MAINTENANCE

1. Wood mulch maintenance shall occur in March through September in accordance with III. Minimum Acceptable Schedule included in SoW “A”.

2. Wood mulch areas along fence lines shall be kept free of all debris and vegetation. Wood mulch shall be mixed and turned once in March to prevent compaction and vegetation establishment.

H. EDGING

1. Edging shall occur as needed from April through September in accordance with III. Minimum Acceptable Schedule included in SoW “A”.

2. All equipment shall be cleaned prior to working at any site to prevent the spread of weed seeds. Work shall proceed from the least to most infested areas on the site.

3. Edging shall be performed along sidewalks, curbs, pathways, fences, roadways, and access areas. A clean, straight edge shall be maintained in a neat and consistent manner. A 2-foot buffer shall be maintained along fence lines and roads where curbs and landscaping are not present.

4. All clippings from edging shall be removed from sidewalks, roadways, access areas, gutters, and curbs. Clippings shall be raked up and disposed of properly to maintain a clean appearance and healthy regrowth. Clippings shall not be left, blown, or swept into wood/rock mulch areas, streets, gutters, or stormwater basins.

Scope of Work “A” - Page 5 of 9

I. FALL MAINTENANCE

1. Fall maintenance shall occur once in October in accordance with III. Minimum Acceptable Schedule included in SoW “A”.

2. All equipment shall be cleaned prior to working at any site, to prevent the spread of weed seeds. Work shall proceed from least to most weed-infested areas in a site.

3. The buildup of organic leaf matter and clippings in the basin bottom shall be raked up and removed from all facilities. Thick clumps of leaves within basins shall be raked from desirable vegetation and removed.

4. All organic and inorganic debris shall be removed from sidewalks and curbs, then disposed of properly. Debris of any kind shall not be left, blown, or swept into the wood mulch areas, streets, gutters, or stormwater basins.

5. Extra care shall be taken around desirable plants, sprinklers, fence lines, and on slopes to prevent damage due to fall maintenance. Plants that are damaged by the contractor shall be replaced by the contractor at the contractor’s expense.

J. EARLY SPRING MAINTENANCE

1. Early spring maintenance shall occur once in March in accordance with III.

Minimum Acceptable Schedule included in SoW “A”.

2. All equipment shall be cleaned prior to working at any site, to prevent the spread of weed seeds. Work shall proceed from least to most weed-infested areas in a site.

3. All grasses shall be trimmed to 12 inches in height. Special care shall be taken not to scalp bunch grasses (trim too short). Grasses shall be mulched on site to a size no greater than 2-inches. Mulched vegetation shall be spread evenly and at a depth no greater than 2-inches. Mulched material shall not smother desirable vegetation. Extra care shall be taken not to damage germinating vegetation. Excess material shall be removed from the site. All vegetation containing weed seeds must be removed from the facility.

4. All debris shall be removed from vegetated areas, sidewalks, and curbs and then disposed of properly. Debris of any kind shall not be left, blown, or swept into the wood/rock mulch areas, streets, gutters, or stormwater basins.

Scope of Work “A” - Page 6 of 9

5. Extra care shall be taken around desirable plants, sprinklers, fence lines, and on slopes to prevent damage due to fall maintenance. Plants that are damaged by the contractor shall be replaced by the contractor at the contractor’s expense.

6. The ACHD Integrative Vegetation Management Plant Guide (IVM) provides a generalized list of non-desirable plant species, though it is not all-inclusive.

(Appendix A). It is the contractor’s responsibility to correctly identify desirable versus undesirable plant species and to contact ACHD when necessary if uncertain.

K. CLEAN-UP

1. Clean up shall occur as needed during site visits while completing other tasks in accordance with III. Minimum Acceptable Schedule included in SoW “A”.

2. All trash, dirt, maintenance-generated debris, and all other debris shall be removed from wood/rock mulch areas, sidewalks, gutters, gravel access ramps, and roads and disposed of properly. Lawn debris shall not be blown or swept into the street, gutter, wood mulch, or stormwater basin. Unusually large items found in facilities shall be reported to ACHD.

3. Inlets/Outlets shall be kept free of debris (vegetation, sediment, trash, etc.).

4. Fence lines and wood mulch areas will be kept free of debris.

5. Contractor shall rake out and report damage caused by tire tracks and erosion.

Contractor shall also rake out footprints in highly visible areas.

Scope of Work “A” - Page 7 of 9

II. DRY BASIN VEGETATION MAINTENANCE LIST

ITEM ITEM DESCRIPTION

1. Basin 63 at South Garden Street and West Albion Street, Boise, Idaho.

2. Basin 77 at South Linder Road and West Barrett Drive, Meridian, Idaho

3. Basin 79 at North Meridian Road and West Woodbury Drive, Meridian, Idaho.

4. Basin 80 at West Waterbury Drive and West Chrisfield Drive, Meridian, Idaho.

5. Basin 274 at South Meridian Road and E Overland Road, Meridian, Idaho

6. Basin 327 at East Boise Avenue and South Betsy Ross Way, Boise, Idaho

7. Basin 331 at West Emerald Street and North Steelhead Way, Boise, Idaho

8. Basin 334 at West Ustick Road and North Dove Place, Boise, Idaho

9. Basin 364 at North Cloverdale Road and West Halstead Street, Boise, Idaho

10. Basin 604 at North Linder Road and West Rattlesnake Court, Meridian, Idaho

11. Basin 605 at West Franklin Road and Electric Ave, Boise, Idaho

12. Basin 628 at North Five Mile Road and West Milclay Street, Boise, Idaho.

14. Basin 629 at North Cloverdale Road and West Lewis and Clark Drive, Boise, Idaho.

13. Basin 630 at West Ustick Road and North Chatterton Way, Meridian, Idaho

15. Basin 673 at North Ten Mile Road and West Franklin Road, Meridian, Idaho

16. Basin 674 at 858 N. Whitewater Park Boulevard, Boise, Idaho

17. Basin 685 at West Executive Drive and North Five Mile Road, Boise, Idaho

18. Basin 694/695 at West Hill Road and Catalpa Drive, Boise, Idaho

19. Basin 696 at West Hill Road and North 36th Street, Boise, Idaho

20. Basin 1321 at North Veterans Memorial Parkway and West Glendale Road, Boise, Idaho.

21. Basin 1338 at West Glendale Street and North Stilson Road, Boise, Idaho.

22. Basin 1339 at West Alameda Street and North Veterans Memorial Parkway, Boise, Idaho.

23. Basin 1370 at North Arthur Street and West State Street, Boise, Idaho

24. Basin 1372 at South Cole Road and West Lake Hazel Road, Boise, Idaho

25. Basin 1374 at North Cloverdale Road and West Edna Street, Boise, Idaho.

26.

Basin 1440 at N. Collister Drive and Collister Access (South of Collister Access), Boise, Idaho

Scope of Work “A” - Page 8 of 9

ITEM ITEM DESCRIPTION

27.

Basin 1441 at N. Collister Drive and Collister Access (North of Collister Access), Boise, Idaho

28. Basin 1631 at S. Ten Mile Rd and W. Victory Rd, Meridian, Idaho

29. Basin 1714 at W. Executive Dr and N. Cloverdale Rd, Boise, Idaho

Scope of Work “A” - Page 9 of 9

III. MINIMUM ACCEPTABLE SCHEDULE – DRY BASIN VEGETATION MAINTENANCE ACTIVITIES

Scope of Work "A" Tasks Months

Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept A. Safety X X X X X X X X X

B. Activity Report X X X X X X X X X C. Site Walkthroughs and Evaluations

XTBD XTBD XTBD

D. Weed Removal – Manual

XA/N XA/N X1 X2 X2 X2 X1 X1 X1

E. Weed Removal – Mechanical

XA/N XA/N X1 X2 X2 X2 X1 X1 X1

F. Fire Weeding - Optional XTBD XTBD XTBD G. Wood Mulch Maintenance

X1 X2 X2 X2 X1 X1 X1

H. Edging XA/N XA/N XA/N XA/N XA/N XA/N

I. Fall Maintenance X1 J. Early Spring – Grass Trimming

X1

K. Clean Up XA/N XA/N XA/N XA/N XA/N XA/N XA/N XA/N XA/N

Notes:

X – Task shall occur during every site visit.

X1 – Task shall occur once a month, with at least two weeks after the previous visit.

X2 – Task shall occur twice a month and shall be two weeks apart unless a specific reason necessitates otherwise and

ACHD approves.

XTBD - Specific date to be determined (TBD) by contractor in coordination with ACHD.

XA/N – Maintenance task shall occur only as needed (A/N).

Scope of Work “B” - Page 1 of 8

SCOPE OF WORK “B”

BIORETENTION SWALE VEGETATION MAINTENANCE

I. ACTIVITIES TO BE PERFORMED

A. SAFETY

The Contractor shall be solely and completely responsible for safety conditions at the job site, including safety of all persons (including employees) and property during performance of the Work. This requirement shall apply continuously and not be limited to normal working hours.

Safety provisions shall conform to U.S. Department of Labor (OSHA), the State Occupational Safety and Health Act, and all other applicable federal, state, county and local laws, ordinances, codes, those requirements set forth below and any regulations that may be detailed in other parts of these Contract Documents.

When any of these requirements are in conflict, the more stringent requirement shall be followed. The Contractor’s failure to thoroughly familiarize himself with all safety requirements shall not relieve him from compliance with the obligations and penalties set forth herein.

B. ACTIVITY REPORT

1. Contractor shall complete an electronic activity report for work performed per site visit at the locations listed in II. Bioretention Swale Vegetation Maintenance List and III. Bioretention Swale Aquatic Weed Removal List included in SoW “B”. It is the contractor’s responsibility to supply their own electronic device (tablet or smartphone) and internet connection. The

ACHD will provide an ArcGIS account and training for supervisors.

Scope of Work “B” - Page 2 of 8

1. Contractor shall complete site walkthroughs and evaluations at each facility with ACHD at a minimum of three (3) times a year. Walkthroughs shall occur in October, April, and July in accordance with IV. Minimum Acceptable Schedule included in SoW “B”. Walkthroughs will enable continual communication between the Contractor and ACHD to ensure management success. Evaluations will help direct maintenance efforts to achieve desired outcomes.

2. Contractor shall dedicate personnel to the project as practicable to avoid inefficiencies associated with re-training of new persons in plant identification, site management, and contract scope specifics.

D. HEIGHT RESTRICTION – VISIBILITY REQUIREMENTS

1. Contractor shall notify ACHD immediately if any vegetation in bioretention swales is taller than three-feet (3-feet) from the surface of the road in accordance with the IV. Minimum Acceptable Schedule included in SoW “B”.

Vegetation that exceeds the specified height limit is deemed a sight impairment safety hazard for the traveling public and is prohibited.

2. Contractor shall maintain all vegetation to two-feet (2) in height from the surface of the road in the Franklin Swales sections 552 – 560 in accordance with the IV. Minimum Acceptable Schedule included in SoW “B”. Vegetation that exceeds the specified height limit is deemed a safety hazard to vehicles and is prohibited.

E. WEED REMOVAL - MANUAL

1. Manual weed removal shall be performed at least twice (2) a month from March through May, and once per month from June through September and as needed in October and November, but not more than once a month in accordance with IV. Minimum Acceptable Schedule included in SoW “B”.

2. Within swales, all tree seedlings shall be considered weeds and shall be manually removed.

3. Methods to be utilized include hand-pulling and other non-mechanical techniques. Manual weeding shall include well-timed removal of weeds to prevent weed seed dispersal and to reduce weed pressure around germinating and transplanted desirable plants. Manual weed removal efforts shall occur in and around desirable vegetation that could be damaged by mechanical methods. Manual weeding shall be utilized to remove low-growing weeds and in areas where the use of mechanical methods poses a safety risk. It is important to distribute seeds from desirable vegetation across poorly established areas.

Scope of Work “B” - Page 3 of 8

4. Desirable and undesirable species are identified in, but not limited to, the ACHD Integrative Vegetation Management (IVM) Plant Guide (Appendix A). It is the Contractor’s responsibility to be able to identify desirable versus undesirable plant species as identified in the ACHD IVM Plant Guide.

5. Contractor shall not use fertilizer, pesticides, and/or herbicides of any kind in the stormwater facilities unless specifically requested by ACHD. Care shall be taken to protect all desirable shrubs and trees during all maintenance activities. Desirable vegetation damaged due to Contractor activities shall be replaced by Contractor at Contractor’s expense.

F. WEED REMOVAL - MECHANICAL

1. Contractor shall cut weeds in vegetated areas at least twice (2) a month from March through May. Once (1) a month from June through September and as needed in October and November, but not more than once a month in accordance with IV. Minimum Acceptable Schedule included in SoW “B”.

2. All equipment shall be cleaned prior to performance of work at a site to prevent inter-site cross-contamination with weed seed to un-infested areas.

3. Mechanical weeding shall include well-timed, site-specific mechanical cutting methods (e.g., line trimmer, brush cutter). To weaken and prevent seed development and dispersal, all cut vegetation must be removed from the facility. No large mowing equipment shall be used within stormwater facilities.

4. Mechanical weeding shall only be performed in areas where desirable vegetation and/or infrastructure will not be damaged. Mechanical weeding areas include but are not limited to fence lines, access roads, ramps, along retaining walls, inlets/outlets, and unlandscaped strips.

5. Additionally, mechanical weeding shall occur in unlandscaped areas along sidewalks next to bioretention swales as depicted in the attached Site Maps.

This area shall be two (2) feet in width.

6. Contractor shall not use fertilizer, pesticides, and/or herbicides of any kind in the stormwater facilities unless specifically requested by ACHD. Care shall be taken to protect all desirable shrubs and trees during all maintenance

Scope of Work “B” - Page 4 of 8

G. AQUATIC WEED REMOVAL

1. Contractor shall notify ACHD immediately if aquatic vegetation is identified in a bioretention swale.

2. Contractor shall cut and remove aquatic weeds in Franklin Swale sections 561

– 564 at W. Franklin Road and S. Umbria Hills Way, Meridian, ID, and Ten Mile Swale sections 619 and 625 located on the east side of Ten Mile Road, Meridian, ID. Removal events shall occur as needed from March through September in accordance with Section IV. Minimum Acceptable Schedule and III.

Bioretention Swale Aquatic Weed Removal List included in SoW “B”.

3. Work shall be performed in such a manner to limit damage to soils, desirable vegetation, and slopes. Care shall be taken to protect desirable plants during aquatic vegetation removal efforts. Contractor-damaged plant materials shall be replaced by Contractor at Contractor’s expense.

4. It is the Contractor’s responsibility to ensure that personnel performing vegetation removal can identify desirable species identified in (but not limited

to) the ACHD Integrative Vegetation Management (IVM) Plant Guide (Appendix A) for avoidance.

5. Proper tools and personal protective equipment (PPE) shall be determined by the Contractor and provided to Contractor crew members at no additional cost to ACHD. Work shall at a minimum require the use of proper forearm-length waterproof gloves and boots to prevent dermal contact.

H. TRIMMING GRASSES

1. Line trimming bioretention swales grasses shall occur as needed but no more than two times during months of May and June and only once in September in accordance with IV. Minimum Acceptable Schedule included in SoW “B”.

The goal is to trim spent seed heads after the grass has dropped its seed; thus, the grass re-seeds itself. Bioretention swales grasses shall not be line-trimmed shorter than 6-inches in height and should not be taller than 8-inches.

2. All equipment shall be cleaned prior to working at any site, to prevent the spread of weed seeds. Work shall proceed from least to most weed infested areas in a site. Special care shall be taken not to scalp bunch grasses (trim too short).

3. All vegetative and nonvegetative debris shall be removed from the swales, sidewalks, and curbs, then disposed of properly. Debris of any kind shall not be left, blown, or swept into the wood/rock mulch areas, street, gutter, stormwater bioretention swales.

4. Extra care shall be taken around desirable plants, sprinklers, fence lines, and on slopes to prevent damage due to maintenance. Plants that are damaged by the contractor shall be replaced by the contractor at the contractor’s expense.

Scope of Work “B” - Page 5 of 8

5. The ACHD Integrative Vegetation Management Plant Guide (IVM) provides a generalized list of non-desirable plant species, though it is not all-inclusive.

(Appendix A). It is the contractor’s responsibility to correctly identify desirable versus undesirable plant species. Contact ACHD when necessary if uncertain.

I. EDGING

1. Edging shall occur as needed from April through September in accordance with IV. Minimum Acceptable Schedule included in SoW “B”.

2. All equipment shall be cleaned prior to working at any site to prevent the spread of weed seeds. Work shall proceed from the least to most infested areas on the site.

3. Edging shall be performed along sidewalks, curbs, pathways, fences, roadways, and access areas. A clean, straight edge shall be maintained in a neat and consistent manner. A 2-foot buffer shall be maintained along fence lines and roads where curbs and landscaping are not present.

4. All clippings from edging shall be removed from sidewalks, roadways, access areas, gutters, and curbs. Clippings shall be raked up and disposed of properly to maintain a clean appearance and healthy regrowth. Clippings shall not be left, blown, or swept into wood/rock mulch areas, streets, gutters, or stormwater bioretention swales.

J. FALL MAINTENANCE

1. Fall maintenance shall occur once in October in accordance with IV. Minimum Acceptable Schedule included in SoW “B”.

2. All equipment shall be cleaned prior to working at any site, to prevent the spread of weed seeds. Work shall proceed from least to most weed infested areas in a site.

3. Buildup of organic matter (leaves, clippings, thatch, etc.) shall be raked up and removed from the swale.

4. All organic and inorganic debris shall be removed from sidewalks and curbs then disposed of properly. Debris of any kind shall not be left, blown, or swept into the wood mulch areas, street, gutter, or stormwater bioretention swales.

5. Extra care shall be taken around desirable plants, sprinklers, fence lines, and on slopes to prevent damage due to fall maintenance. Plants that are damaged by the contractor shall be replaced by the contractor at the contractor’s expense.

Scope of Work “B” - Page 6 of 8

K. CLEAN-UP

1. Clean up shall occur as needed during site visits while completing other tasks in accordance with IV. Minimum Acceptable Schedule include in SoW “B”.

2. All trash, dirt, maintenance-generated debris, and all other debris shall be removed from wood/rock mulch areas, sidewalks, gutters, gravel access ramps, and roads and disposed of properly. Lawn debris shall not be blown or swept into the street, gutter, wood mulch, or stormwater swale. Unusually large items found in facilities shall be reported to ACHD.

3. Inlets and the attached concrete apron shall be kept free of debris (vegetation, sediment, trash etc.).

4. Contractor shall rake out and report damage caused by tire tracks and erosion.

Contractor shall also rake out footprints in bioretention swales and highly visible areas.

Scope of Work “B” - Page 7 of 8

II. BIORETENTION SWALE VEGETATION MAINTENANCE LIST

1. Bioretention Swales on South Cole Road and Middle Fork Street, Boise, Idaho

2. Bioretention Swales on Collister Drive & West State Street, Boise, Idaho

3. Bioretention Swales on Franklin, Ten Mile Road to Black Cat Road, Meridian, Idaho

4. Bioretention Swales on East Heron Park Lane, North Adams St. to North Reed St, Garden City, Idaho

5. Bioretention Swales on North Meridian Road, West Cherry Lane to East Ustick Road, Meridian, Idaho

6. Bioretention Swales on Ten Mile Road, West Ustick to West McMillian Road, Meridian, Idaho

III. BIORETENTION SWALE AQUATIC WEED REMOVAL LIST

1. Franklin Swales 561 – 564 at West Franklin Road and S. Umbria Hills Way, Meridian, Idaho

2. Ten Mile Swales 619 and 625 on the east side of Ten Mile Road, Meridian, Idaho

Scope of Work “B” - Page 8 of 8

IV. MINIMUM ACCEPTABLE SCHEDULE – SWALE VEGETATION MAINTENANCE

Scope of Work “B” Tasks Month

Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept A. Safety X X X X X X X X X

B. Daily Activity Report X X X X X X X X X C. Site Walkthroughs and Evaluations XTBD XTBD XTBD

D. Hight Restrictions – Visibility Requirements XA/N XA/N XA/N XA/N XA/N XA/N XA/N XA/N XA/N

E. Weed Removal – Manual XA/N XA/N X2 X2 X2 X1 X1 X1 X1 F. Weed Removal – Mechanical XA/N XA/N X2 X2 X2 X1 X1 X1 X1

G. Aquatic Weed Removal1 XA/N XA/N XA/N XA/N XA/N XA/N XA/N

H. Trimming Grasses XA/N XA/N X1

I. Edging XA/N XA/N XA/N XA/N XA/N XA/N

J. Fall Maintenance X1

K. Clean Up XA/N XA/N XA/N XA/N XA/N XA/N XA/N XA/N XA/N

Notes:

1 – Applies only to III. Bioretention Swale Aquatic Weed Removal List X – Task shall occur during every site visit.

X1 – Task shall occur once a month with at least two weeks after the previous visit.

X2 – Task shall occur twice (2) a month with at least two weeks after the previous visit.

Scope of Work “C” - Page 1 of 9

SCOPE OF WORK “C”

WET BASIN VEGETATION MAINTENANCE

I. ACTIVITIES TO BE PERFORMED

A. SAFETY

The Contractor shall be solely and completely responsible for safety conditions at the job site, including safety of all persons (including employees) and property during performance of the Work. This requirement shall apply continuously and not be limited to normal working hours.

Safety provisions shall conform to U.S. Department of Labor (OSHA), the State Occupational Safety and Health Act, and all other applicable federal, state, county and local laws, ordinances, codes, those requirements set forth below and any regulations that may be detailed in other parts of these Contract Documents.

When any of these requirements are in conflict, the more stringent requirement shall be followed. The Contractor’s failure to thoroughly familiarize himself with all safety requirements shall not relieve him from compliance with the obligations and penalties set forth herein.

B. ACTIVITY REPORT

1. Contractor shall complete an electronic activity report for work performed per site visit at the locations listed in II. Wet Basin Vegetation Maintenance List included in SoW “C”. It is the contractor’s responsibility to supply their own electronic device (tablet or smartphone) and internet connection. The

ACHD will provide an ArcGIS account and training for supervisors.

Scope of Work “C” - Page 2 of 9 with ACHD at a minimum of three (3) times a year. Walkthroughs shall occur in October, April, and July in accordance with III. Minimum Acceptable Schedule included in SoW “C”. Walkthroughs will enable continual communication between the Contractor and ACHD to ensure management success. Evaluations will help direct maintenance efforts to achieve desired outcomes.

2. Contractor shall dedicate personnel to the project as practicable to avoid inefficiencies associated with re-training of new persons in plant identification, site management, and contract scope specifics.

D. WEED REMOVAL - MANUAL

1. Manual weed removal shall be performed at a minimum of every two weeks in April, May, and June, once a month in March, July, August, and September, and as needed in October and November, but not more than once a month in accordance with III. Minimum Acceptable Schedule included in SoW “C”.

2. Methods to be utilized include hand-pulling and other non-mechanical techniques. Manual weeding shall include well-timed removal of weeds to prevent weed seed dispersal and to reduce weed pressure around germinating and transplanted desirable plants. Manual weed removal efforts shall occur in and around desirable vegetation that could be damaged by mechanical methods. Manual weeding shall be utilized to remove low-growing weeds and in areas where the use of mechanical methods poses a safety risk. It is important to distribute seeds from desirable vegetation across poorly established areas.

3. Desirable and undesirable species are identified in, but not limited to, the ACHD Integrative Vegetation Management (IVM) Plant Guide (Appendix A). It is the Contractor’s responsibility to be able to identify desirable versus undesirable plant species as identified in the ACHD IVM Plant Guide.

4. Contractor shall not use fertilizer, pesticides, and/or herbicides of any kind in the stormwater facilities unless specifically requested by ACHD. Care shall be taken to protect all desirable shrubs and trees during all maintenance

Scope of Work “C” - Page 3 of 9

1. Contractor shall cut weeds in vegetated areas at a minimum of every two (2) weeks in April, May, and June, once a month in March, July, August, and September, and as needed in October and November but not more than once a month in accordance with III. Minimum Acceptable Schedule included in SoW “C”.

2. All equipment shall be cleaned prior to performance of work at a site to prevent inter-site cross-contamination with weed seed to un-infested areas.

3. Mechanical weeding shall include well-timed, site-specific mechanical cutting methods (e.g., line trimmer, brush cutter). To weaken and prevent seed development and dispersal, all cut vegetation must be removed from the facility. No large mowing equipment shall be used within stormwater facilities.

4. Mechanical weeding shall only be performed in areas where desirable vegetation and/or infrastructure will not be damaged. Mechanical weeding areas include but are not limited to fence lines, access roads, ramps, along retaining walls, inlets/outlets, and unlandscaped strips.

5. Contractor shall not use fertilizer, pesticides, and/or herbicides of any kind in the stormwater facilities unless specifically requested by ACHD. Care shall be taken to protect all desirable shrubs and trees during all maintenance activities. Desirable vegetation damaged due to Contractor activities shall be replaced by Contractor at Contractor’s expense.

F. AQUATIC WEED REMOVAL

1. Contractor shall cut and remove aquatic weeds in aquatic areas delineated in the Site Maps. Removal events shall occur as needed from March through September in accordance with the III. Minimum Acceptable Schedule included in SoW “C”.

2. Work shall be performed in such a manner to limit damage to soils, desirable vegetation, and slopes. Care shall be taken to protect desirable plants, including but not limited to flagged shrubs and trees, for avoidance during aquatic vegetation removal efforts. Contractor-damaged plant materials shall be replaced by Contractor at Contractor’s expense. It is the Contractor’s responsibility to ensure that personnel performing vegetation removal can identify desirable species identified in (but not limited to) the ACHD Integrative Vegetation Management (IVM) Plant Guide (Appendix A) for avoidance.

Scope of Work “C” - Page 4 of 9

3. Care shall be taken to minimize sediment stir-up and damage to wetland vegetation root structures during aquatic weed removal efforts. Proper tools and personal protective equipment (PPE) shall be determined by contractor and provided to Contractor crew members at no additional cost to ACHD.

Work shall at a minimum require the use of chest or hip waders and proper

G. CATTAIL ROOT REMOVAL

1. Contractor shall cut and remove cattail roots in flooded and hydric (wetland) areas. To lessen site disturbance, removal events shall occur in November or February when water levels are low, and ground is frozen in accordance with the III. Minimum Acceptable Schedule included in SoW “C”.

2. Care shall be taken to minimize sediment stir-up and damage to wetland vegetation root structures during cattail root removal efforts. Proper tools and personal protective equipment (PPE) shall be determined by the contractor and provided to Contractor crew members at no additional cost to ACHD. Work shall at a minimum require the use of chest or hip waders and proper forearm-length waterproof gloves to prevent dermal contact.

3. Care shall be taken to protect desirable plants including but not limited to flagged shrubs and trees for avoidance during root removal. Contractor-damaged plant materials shall be replaced by Contractor at Contractor’s expense. It is the Contractor’s responsibility to ensure that personnel performing vegetation removal can identify desirable species identified in (but not limited to) the ACHD Integrative Vegetation Management (IVM) Plant Guide (Appendix A) for avoidance

H. WEED REMOVAL – FLAME WEEDING

1. Flame weeding is an optional weed management method. Contractor must request approval from ACHD prior to flame weeding any stormwater facility.

Flame weeding shall only occur during the months of November, March, April, and/or May in accordance with III. Minimum Acceptable Schedule included in SoW “C”. Flame weeding shall be done in a careful and controlled manner to prevent uncontrolled burn. The goal of flame weeding is to damage the cell structure in the weed’s foliage in an effort to cause the weeds to wilt and die not to set the plants on fire. Care shall be taken to avoid damaging desirable vegetation.

by the city fire department or local fire district. Contractors shall provide a copy of the valid permit(s) if requested by ACHD. As an added precaution, Contractors shall not flame weed if a fire ban is in effect, if the National Fire Danger Rating System is above the low category, and/or if the vegetation within and around the facility is too dry and poses a risk of igniting.

Scope of Work “C” - Page 5 of 9

I. WOOD MULCH MAINTENANCE

1. Wood mulch maintenance shall occur in March through September in accordance with III. Minimum Acceptable Schedule included in SoW “A”.

2. Wood mulch areas along fence lines shall be kept free of all debris and vegetation. Wood mulch shall be mixed and turned once in March to prevent compaction and vegetation establishment.

J. EDGING

1. Edging shall occur as needed from April through September in accordance with III. Minimum Acceptable Schedule included in SoW “C”.

2. All equipment shall be cleaned prior to working at any site to prevent the spread of weed seeds. Work shall proceed from the least to most infested areas on the site.

3. Edging shall be performed along sidewalks, curbs, pathways, fences, roadways, and access areas. A clean, straight edge shall be maintained in a neat and consistent manner. A 2-foot buffer shall be maintained along fence lines and roads where curbs and landscaping are not present.

4. All clippings from edging shall be removed from sidewalks, roadways, access areas, gutters, and curbs. Clippings shall be raked up and disposed of properly to maintain a clean appearance and healthy regrowth. Clippings shall not be left, blown, or swept into wood/rock mulch areas, streets, gutters, or stormwater basins.

K. FALL MAINTENANCE

1. Fall maintenance shall occur once in October in accordance with III.

Minimum Acceptable Schedule included in SoW “C”.

2. All equipment shall be cleaned prior to working at any site, to prevent the spread of weed seeds. Work shall proceed from least to most weed-infested areas in a site.

3. The buildup of organic leaf matter and clippings in the basin bottom shall be raked up and removed from all facilities. Thick clumps of leaves within basins shall be raked from desirable vegetation and removed.

4. All organic and inorganic debris shall be removed from sidewalks and curbs, then disposed of properly. Debris of any kind shall not be left, blown, or swept into the wood mulch areas, street, gutter, or stormwater basin.

Scope of Work “C” - Page 6 of 9 on slopes to prevent damage due to fall maintenance. Plants that are damaged by the contractor shall be replaced by the contractor at the contractor’s expense.

L. EARLY SPRING GRASS TRIMMING

1. Early spring maintenance shall occur once in March in accordance with III.

Minimum Acceptable Schedule included in SoW “C”.

2. All equipment shall be cleaned prior to working at any site, to prevent the spread of weed seeds. Work shall proceed from least to most weed-infested areas in a site.

3. All grasses shall be trimmed to 12 inches in height. Special care shall be taken not to scalp bunch grasses (trim too short). Grasses shall be mulched on site to a size no greater than 2-inches. Mulched vegetation shall be spread evenly and at a depth no greater than 2-inches. Mulched material shall not smother desirable vegetation. Extra care shall be taken not to damage germinating vegetation. Excess material shall be removed from the site. All vegetation containing weed seeds must be removed from the facility.

4. All debris shall be removed from vegetated areas, sidewalks, and curbs and then disposed of properly. Debris of any kind shall not be left, blown, or swept into the wood/rock mulch areas, street, gutter, or stormwater basin.

5. Extra care shall be taken around desirable plants, sprinklers, fence lines, and on slopes to prevent damage due to fall maintenance. Plants that are damaged by the contractor shall be replaced by the contractor at the contractor’s expense.

6. The ACHD Integrative Vegetation Management Plant Guide (IVM) provides a generalized list of non-desirable plant species, though it is not all-inclusive.

(Appendix A). It is the contractor’s responsibility to correctly identify desirable versus undesirable plant species and to contact ACHD when necessary if uncertain.

Scope of Work “C” - Page 7 of 9

M. CLEAN-UP

1. Clean up shall occur as needed during site visits while completing other tasks in accordance with III. Minimum Acceptable Schedule included in SoW “C”.

2. All trash, dirt, maintenance-generated debris, and all other debris shall be removed from wood/rock mulch areas, sidewalks, gutters, gravel access ramps, and roads and disposed of properly. Lawn debris shall not be blown or swept into street, gutter, wood mulch, or stormwater basin. Unusually large items found in facilities shall be reported to ACHD.

3. Fallen leaves shall be removed as needed. Leaves shall not be left, blown, or swept into streets or gutters.

4. Inlets/Outlets shall be kept free of debris (vegetation, sediment, trash, etc.).

5. Fence lines and wood mulch areas will be kept free of debris.

6. Contractor shall rake out and report damage caused by tire tracks and erosion.

Scope of Work “C” - Page 8 of 9

II. WET BASIN VEGETATION MAINTENANCE LIST

1. Basin 492 at North Linder Road and West Ustick Road, Meridian, Idaho

2. Basin 692 at North Edgewood Lane and East Hill Road, Eagle, Idaho.

3. Basin 1322 at East Pine and North Stonehenge Way, Meridian, Idaho

4. Basin 1324 at North Cloverdale Road and West Bowmont Street, Boise, Idaho

5. Basin 1406 at West Trestlewood Street and South Ravenwood Way, Boise, Idaho

6. Basin 1630 at West Reutzel Drive and South Summerset Way, Meridian, Idaho

7. Basin 1689 at East State Ave and North Cathy Lane, Meridian, Idaho

8. Basin 1719 at West Floating Feather Road and North Catamaran Way, Star, Idaho

Scope of Work “C” - Page 9 of 9

III. MINIMUM ACCEPTABLE SCHEDULE – WET BASIN VEGETATION MAINTENANCE

Scope of Work “C” Tasks Months

Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept

A. Safety X X X X X X X X X

B. Daily Activity Report X X X X X X X X X C. Site Walkthroughs and Evaluations XTBD XTBD XTBD

D. Weed Removal – Manual XA/N XA/N X1 X2 X2 X2 X1 X1 X1 E. Weed Removal – Mechanical XA/N XA/N X1 X2 X2 X2 X1 X1 X1

F. Aquatic Weed Removal XA/N XA/N XA/N XA/N XA/N XA/N XA/N

G. Cattail Root Removal XOR XOR

H. Flame Weeding - Optional XTBD XTBD XTBD

I. Wood Mulch Maintenance X1 X2 X2 X2 X1 X1 X1

J. Edging XA/N XA/N XA/N XA/N XA/N XA/N

K. Fall Maintenance X1

L. Early Spring Grass Trimming X1

M. Clean Up XA/N XA/N XA/N XA/N XA/N XA/N XA/N XA/N XA/N

Notes:

X – Task shall occur during every site visit.

X1 – Task shall occur once a month with at least two weeks after the previous visit.

X2 – Task shall occur twice a month and shall be two weeks apart unless a specific reason necessitates otherwise and

ACHD approves.

XTBD - Specific date to be determined (TBD) by contractor in coordination with ACHD.

XOR – Task shall occur in one of the specified month(s).

Scope of Work “D” - Page 1 of 9

SCOPE OF WORK “D”

REDUCED VEGETATION MAINTENANCE

I. ACTIVITIES TO BE PERFORMED

A. SAFETY

The Contractor shall be solely and completely responsible for safety conditions at the job site, including safety of all persons (including employees) and property during performance of the Work. This requirement shall apply continuously and not be limited to normal working hours.

Safety provisions shall conform to U.S. Department of Labor (OSHA), the State Occupational Safety and Health Act, and all other applicable federal, state, county and local laws, ordinances, codes, those requirements set forth below and any regulations that may be detailed in other parts of these Contract Documents. When any of these requirements are in conflict, the more stringent requirement shall be followed. The Contractor’s failure to thoroughly familiarize himself with all safety requirements shall not relieve him from compliance with the obligations and penalties set forth herein.

B. ACTIVITY REPORT

1. Contractor shall complete an electronic activity report for work performed per site visit at the locations listed in II. Reduced Vegetation Maintenance List and III. Aquatic Weed Removal List included in SoW “D”. It is the contractor’s responsibility to supply their own electronic device (tablet or smartphone) and internet connection. The following computer apps will be needed: Survey123 and ArcGIS Field Map app. ACHD will provide an ArcGIS account and training for supervisors.

Scope of Work “D” - Page 2 of 9 with ACHD at a minimum of three (3) times a year. Walkthroughs shall occur in October, April, and July in accordance with IV. Minimum Acceptable Schedule included in SoW “D”. Walkthroughs will enable continual communication between the Contractor and ACHD to ensure management success. Evaluations will help direct maintenance efforts to achieve desired outcomes.

2. Contractor shall dedicate personnel to the project as practicable to avoid inefficiencies associated with re-training of new persons in plant identification, site management, and contract scope specifics.

D. WEED REMOVAL - MANUAL

1. Manual weed removal shall be performed at a minimum of once a month in April, July, and October in accordance with IV. Minimum Acceptable Schedule included in SoW “D”.

2. Methods to be utilized include hand-pulling and other non-mechanical techniques. Manual weeding shall include well-timed removal of weeds to prevent weed seed dispersal and to reduce weed pressure around germinating and transplanted desirable plants. Manual weed removal efforts shall occur in and around desirable vegetation that could be damaged by mechanical methods. Manual weeding shall be utilized to remove low-growing weeds and in areas where the use of mechanical methods poses a safety risk.

3. Desirable and undesirable species are identified in, but not limited to, the ACHD Integrative Vegetation Management (IVM) Plant Guide (Appendix A). It is the Contractor’s responsibility to be able to identify desirable versus undesirable plant species as identified in the ACHD IVM Plant Guide.

4. Contractor shall not use fertilizer, pesticides, and/or herbicides of any kind in the stormwater facilities unless specifically requested by ACHD. Care shall be taken to protect all desirable shrubs and trees during all maintenance

Scope of Work “D” - Page 3 of 9

1. Contractor shall cut weeds in vegetated areas at a minimum of once in April, July, and October in accordance with IV. Minimum Acceptable Schedule included in SoW “D”.

2. All equipment shall be cleaned prior to performance of work at a site to prevent inter-site cross-contamination with weed seed to un-infested areas.

3. Mechanical weeding shall include well-timed, site-specific mechanical cutting methods (e.g., line-trimmer, brush-cutter). To weaken and prevent seed development and dispersal, all cut vegetation must be removed from the facility. No large mowing equipment shall be used within stormwater facilities.

4. Mechanical weeding shall only be performed in areas where desirable vegetation and/or infrastructure will not be damaged. Mechanical weeding areas include but are not limited to fence lines, access roads, ramps, along retaining walls, inlets/outlets, and un-landscaped strips.

5. Contractor shall not use fertilizer, pesticides, and/or herbicides of any kind in the stormwater facilities unless specifically requested by ACHD. Care shall be taken to protect all desirable shrubs and trees during all maintenance activities. Desirable vegetation damaged due to Contractor activities shall be replaced by Contractor at Contractor’s expense.

F. AQUATIC WEED REMOVAL

1. Contractor shall cut and remove aquatic weeds in aquatic areas delineated in the ACHD Site Maps. Removal events shall occur as needed in April, July, and October in accordance with the IV. Minimum Acceptable Schedule and III.

Aquatic Vegetation List included in SoW “D”.

2. Work shall be performed in such a manner to limit damage to soils, desirable vegetation, and slopes. Care shall be taken to protect desirable plants, including but not limited to flagged shrubs and trees for avoidance during aquatic vegetation removal efforts. Contractor-damaged plant materials shall be replaced by Contractor at Contractor’s expense. It is the Contractor’s responsibility to ensure that personnel performing vegetation removal can identify desirable species identified in, but not limited to, the ACHD Integrative Vegetation Management (IVM) Plant Guide (Appendix A) for avoidance.

3. Care shall be taken to minimize sediment stir-up and damage to wetland vegetation root structures during aquatic weed removal efforts. Proper tools and personal protective equipment (PPE) shall be determined by the contractor and provided to Contractor crew members at no additional cost to ACHD. Work shall at a minimum require the use of chest or hip waders and proper forearm-length waterproof gloves to prevent dermal contact.

Scope of Work “D” - Page 4 of 9

G. WEED REMOVAL – FLAME WEEDING

1. Flame weeding is an optional weed management method. Contractor must request approval from ACHD prior to flame weeding any stormwater facility.

Flame weeding shall only occur during the month of April in accordance with IV. Minimum Acceptable Schedule included in SoW “D”. Flame weeding shall be done in a careful and controlled manner to prevent uncontrolled burning.

The goal of flame weeding is to damage the cell structure in the weed’s foliage in an effort to cause the weeds to wilt and die, not to set the plants on fire. Care shall be taken to avoid damaging desirable vegetation.

by the city fire department or local fire district. Contractors shall be able to provide a copy of the valid permit(s) if requested by ACHD. As an added precaution, Contractors shall not flame weed if a fire ban is in effect, if the National Fire Danger Rating System is above the low category, and/or if the vegetation within and around the facility is too dry and poses a risk of…