Attachment_1_-_SOW_for_Project_03051_with_Technical_Exhibits.pdf

Statement of Work (SOW)

Bldg 620 Retrofit Channel/Infiltration Swale

Project Description: The project purpose is to retrofit an existing concrete channel that runs between Bldgs 619, 620, and 622 with an infiltration swale and provide other landscaping improvements to promote storm water infiltration, improve water quality, and prevent flooding and runoff.

1. General:

1.1 Description of Services: The Contractor shall provide all personnel, equipment, supplies, facilities, transportation, tools, materials, supervision, and other items necessary to retrofit an existing concrete channel that runs between Buildings 619, 620, and 622 on the

Presidio of Monterey. This includes, but is not limited to: removing the existing concrete v-ditch, installing a cobble-lined infiltration swale with surrounding native riparian vegetation and improving the existing outdoor gathering area with permeable paving, vegetation, and seating areas. The contractor shall perform to the standards in this contract and all work shall be in compliance with the current editions of all applicable codes and standards.

1.2 Background: The existing concrete channel that runs between Bldgs 619, 620, and 622 does not effectively capture and divert storm water runoff, and instead collects and pools near the sidewalk around Bldg 620. During heavy rain events, the sidewalk becomes flooded, creating a nuisance for the building’s occupants. It also presents a hazard as people may be forced to walk in the street instead of the sidewalk.

1.3 Objectives: The primary objectives of this requirement are to mitigate sidewalk flooding at Bldg 620, and to reduce the quantity of stormwater runoff and provide water quality benefits in compliance with the NPDES General Permit for Phase II Small Municipal Separate

Storm Sewer Systems (MS4).

2. Scope of Work:

2.1 The contractor shall provide labor, material, equipment, transportation, and project management to execute and complete the subject project. Work requirements include, but are not limited to, the following:

General

a. Contractor shall be responsible to provide necessary geotechnical engineering and survey data, and coordinate and provide design and engineering services for removal and disposal of the existing concrete channel, and installation of the swale, surrounding landscaping, and seating areas.

b. Photo authorization is needed if photos/videos will be taken of the project site. Refer to

Command Policy #21, Technical Exhibit 8.

c. Field verify all measurements.

d. Provide survey data of alignment and elevation to design engineers.

e. Provide a site design by a registered professional engineer for review and approval by the

Government prior to commencing demolition or new work.

f. Properly dispose of any or all excess fill and other construction debris off post.

g. Maintain compliance with all environmental stipulations (See Section 5).

h. Contractor must notify PG&E, DigAlert, and POM DPW (831-242-7768) for utility clearance at least two weeks prior to construction.

i. Minimize the amount of excavation taking place on this project.

Demolition

j. Obtain utility clearance.

k. Remove the existing concrete v-ditch (approx. 320 LF) that runs along the south end of

Building 620.

l. Dispose of all debris off post.

New Work (Contingent upon Government approval of design)

m. Conduct site visits to obtain field measurements.

n. Design a cobble-lined infiltration swale with underground overflow pipe, rain gardens, and seating areas based on concepts provided in Exhibits 2, 3, and 4 with the following design and sizing assumptions for the swale:

Design Parameter Value

Drainage Area to Project 80,000 SF

Bioswale Area 1,950 SF

NRCS Hydrologic Soil Group D

Assumed Infiltration Rate 0.25 in/hr

Composite Runoff Coefficient

(C)

0.23

Area-weighted Abstraction 0.19 in

Assumed Ponding Depth 6 in

Assumed Soil Media Depth 12 in

Design Runoff Volume 2,715 CF

Design Storm Depth 2 in

Design must be approved by a registered professional engineer. Provide the design and plans to the Government for review and approval prior to commencing installation of swale. Site design will be based on field measurements and other data collected during site visits. The swale and surrounding landscaping shall be designed to slow runoff and allow for maximum infiltration.

o. Swale will tie into Presidio of Monterey’s existing storm water conveyance system.

p. Tie the downspout on the southeast corner of Building 620 into the new swale.

q. Upon Government approval of the design, install swale, surrounding landscaping, and seating area per design.

r. Restore disturbed area where v-ditch was removed to original habitat with Government-approved hydroseed mix. Area must be stabilized with 70% coverage prior to project completion date.

s. Dispose of all construction debris off post.

2.2 The contractor shall provide at a minimum the following technical submittals for review by the Government. Allow two weeks for review.

a. Project schedule

b. Geotechnical data

c. Project site plans/design

d. Erosion control measures

e. Proposed vegetation & hydroseed mix

2.3 Contractor shall meet with DPW POC and COR weekly to update on construction progress.

2.4 Upon completion of the project, Contractor shall provide manufacturer’s warranty for any installed parts and systems, as well as contractor warranty on labor and workmanship.

2.5 Attachments

a. Technical Exhibit 1 – Project Boundary

b. Technical Exhibit 2 – Concept Plan 1

c. Technical Exhibit 3 – Concept Plan 2

d. Technical Exhibit 4 – Low Impact Development (LID) BMP #10 – Concrete Channel

Retrofit to Cobble Lined Conveyance

e. Technical Exhibit 5 – Presidio of Monterey Storm Drain Network Map 1

f. Technical Exhibit 6 – Presidio of Monterey Storm Drain Network Map 2

g. Technical Exhibit 7 – Presidio of Monterey Existing Water Line Near Building 620

h. Technical Exhibit 8 – Command Policy #21-Photo Authorization

3. Period of Performance (POP):

The Period of Performance (POP) will commence upon issue of the Notice to Proceed (NTP) and shall be finished no later than 365 calendar days following NTP. This includes time to develop submittals and receive Government approval, lead and delivery time for material, project execution, cleanup after the project is complete, and demobilization.

4. General Information:

4.1 Federal Observed Holidays: The Contractor will not be required to perform repairs or construction work on Federal Holidays. Below is the observed holiday’s schedule:

New Year’s Day 1st day of January

Martin Luther King, Jr. Day 3rd Monday of January

President’s Day 3rd Monday of February

Memorial Day Last Monday of May

Independence Day 4th day of July

Labor Day 1st Monday of September

Columbus Day 2nd Monday of October

Veteran’s Day 11th day of November

Thanksgiving Day 4th Thursday of November

Christmas Day 25th day of December

4.2 Hours of Operation: The Contractor is responsible for conducting business, between the hours 0800 – 1630, Monday through Friday, except Federal Holidays or when the

Government facility is closed due to local or national emergencies, administrative closings, or similar Government directed facility closings. The contractor must at all times maintain an adequate workforce for the uninterrupted performance of all tasks defined within this PWS when the Government facility is not closed.

4.3 Place of Performance: The work to be performed shall be at Building 620, Presidio of

Monterey, California.

4.4 Quality Control Plan (QCP): The Contractor shall develop and maintain an effective

QCP to ensure services are performed in accordance with this PWS.

4.5 Security Requirements: The Contractor shall submit a list of employees to the DPW

POC for security access processing and approval. The list shall contain the employee’s full name, state driver’s license number, social security number, and date of birth. Contractor personnel shall be prepared to be searched by the installation security guard force.

4.6 Acceptance and Warranty: The contractor shall coordinate with the Contracting

Officer’s Representative (COR) for final close-out inspection and/or acceptance at each phase of the project. The project may only be officially accepted by the COR. The contractor shall provide warranty manuals/documents (if applicable) to the COR within 30 days following the acceptance of the project. The manuals/documents shall be submitted to the COR.

4.7 Safety Requirements: No person shall be subjected to work in an unsafe or dangerous environment. Contractor safety will be governed by AR 385-10, paragraphs 3-5, 3-8, and

Chapter 4. AR 385-10 may be made available through the COR.

4.8 Environmental Protection Plan (EPP): Not applicable to this project.

4.9 AT Level I Training. All contractor employees, to include subcontractor employees, requiring access to Army installations, facilities and controlled access areas shall complete AT

Level I awareness training NLT 15 calendar days after contract award start date or effective date of incorporation of this requirement into the contract, whichever is applicable. The contractor shall submit certificates of completion for each affected contractor employee and subcontractor employee to the IGSATR or to the Inter-Governmental Services Agreement Manager (IGSAM), within 5 calendar days after completion of training by all employees and subcontractor personnel. AT Level I awareness training is available at the following website: http//jko.jten.mil.

4.10 Access and General Protection/Security Policy and Procedure. Contractor and all associated subcontractor employees shall provide all information required for background checks to meet installation access requirements to be accomplished by the installation Provost Marshall, Director of Emergency Services or Security Office. Contractor workforce shall comply with all personal identity verification requirements (FAR clause 52.204-9, Personal Identity Verification of Contractor Personnel) as directed by DoD, HQDA and/or local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection

Condition (FPCON) at any individual facility or installation change, the Government may require changes in contractor security matters or processes

4.11 For Contractors that do not require CAC, but require access to a DoD Facility or

Installation. Contractor and all associated subcontractor employees shall comply with adjudication standards and procedures using the National Crime Information Center Interstate

Identification Index (NCIC-III) and Terrorist Screening Data Base (TSDB) (Army Directive

2014-05/AR 190-13), applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative), or at

OCONUS locations, in accordance with status of forces agreement and other regulations.

4.12 iWATCH Training. The contractor and all associated subcontractor shall brief all employees on the local iWATCH program (training standards provided by the requiring activity

ATO). This locally developed training will be used to inform employees of the types of behavior to watch for and instruct employees to report suspicious activity to the COR. This training shall be completed NLT 30 calendar days of contract award and NLT 5 calendar days of new employees commencing performance. The results shall be reported to the COR on/or before the timelines stipulated.

4.13 OPSEC Training. Per AR 530-1 Operations Security, the contractor employees must complete Level I OPSEC Awareness training. New employees shall complete training with 30 calendar days after their report of duty date and annually thereafter.

5. Environmental Stipulations

Contractor must abide by the following environmental stipulations:

a. Project must operate in full compliance with the most recent Federal, State, and local environmental laws, regulations, and programs.

b. Project must comply with all environmental requirements listed in the Final

Programmatic Environmental Assessment for the Presidio of Monterey Integrated Water

Sustainability Concept Plan, November 2018, in addition to the requirements listed below.

c. All areas where soil disturbance occurs shall be restored to its original condition or better and any vegetation or hydroseed mixtures shall be approved by DPW Natural Resource

Manager (April Andujar, 831-242-6736).

d. Portable generators must be certified under the Portable Equipment RegistrationProgram

(PERP) via the California Air Resources Board.

e. A professional archaeologist (per qualifications at 36 CFR 61) shall monitor ground disturbance associated with this project.

f. Proposed work may proceed in accordance with the “Programmatic Agreement Among the US Army, the Advisory Council on Historic Preservation (ACHP) and the California

State Historic Preservation Officer (SHPO) Regarding Routine Maintenance of Historic

Properties at the Presidio of Monterey” (PA) provided the channel retrofit is within the footprint of the existing channel.

g. Ensure all equipment and vehicles are kept on hardscape. Staging areas must be on DPW

Environmental-approved hardscaped areas.

h. In accordance with the Phase II Municipal Separate Storm Sewer Systems (MS4) General

Permit, Best Management Practices (BMPs) are required to be used to minimize erosion from the project site and to prevent any illicit discharges to the MS4 during construction.

BMPs must be implemented and followed according to the latest California Stormwater

Quality Association (CASQA) Construction BMP Handbook. Any illicit discharges to the MS4 must be reported immediately to Erika Marx at 831-242-7925.

i. Migratory Bird Treaty Act: If work is performed during the migratory bird nesting season

(1 February to 31 August), a biological survey for nesting migratory birds must be conducted by a qualified biologist no more than 10 days prior to the start of work.

j. All plants must be native to the region. Final selection of plants must be approved by the

Presidio Natural Resource Program Manager.

Technical Exhibit 1 – Project Boundary

Technical Exhibit 2 – Concept Plan 1

Technical Exhibit 3 – Concept Plan 2

Technical Exhibit 4 – Low Impact Development (LID) BMP #10 – Concrete Channel Retrofit to Cobble Lined Conveyance

Technical Exhibit 5 – Presidio of Monterey Storm Drain Network Map 1

Technical Exhibit 6 – Presidio of Monterey Storm Drain Network Map 2

Technical Exhibit 7 – Presidio of Monterey Existing Water Line Near Building 620

Technical Exhibit 8 – Command Policy #21-Photo Authorization