Attachments.pdf

ATTACHMENTS

a. Permits

b. Soil Boring Logs

c. Summary of Pavement Cores

d. Trench Details

e. Valve Cards

f. Test Pit Results

g. Bypass Design Schedule

Permits

PERMIT FOR CONSTRUCTION AND WORK ON PARK PROPERTY

ISSUE DATE: _______________________ EXPIRES ON: ________________________

PERMIT NO.: _______________________ PERMIT FEE: $_______________________

EXTENSION RE- ISSUE DATE: ____________________ EXPIRES ON: __________________

PERMITTEE NAME AND ADDRESS:

MAIN CONTACT:

AUTHORIZED WORK:

The permittee must contact the following M-NCPPC staff 48 hours prior to start of construction:

NAME TITLE PHONE E-MAIL

Steve Morsberger Construction Manager 240.446.4335 Steve Morsberger@montgomeryparks.org

Andrew Sarcinello Engineer 240.595.4872 Andrew.sarcinello@montgomeryparks.org

Andrew Driscoll Arborist 301.452.3543 Andrew.driscoll@montgomeryparks.org

Jacqueline Hoban Sr. Nat. Resc. Specialist 240.772.6623 Jacqueline.hoban@montgomeryparks.org

William Hessick PDD Const. Inspector William,hessick@montgomeryparks.org

Failure to contact the above staff and conduct a pre-construction meeting will result in revocation of this permit. Failure of the permittee to read and adhere to the special conditions on the attached pages will result in revocation of this permit and will require further Technical Review before a new permit is issued.

John Gamba, Construction Section Chief M-NCPPC – Montgomery Parks mailto:John.gamba@montgomeryparks.org mailto:Joshua.arnett@montgomeryparks.org mailto:Andrew.driscoll@montgomeryparks.org mailto:Bill.hamilton@montgomeryparks.org mailto:Ryan.butler@montgomeryparks.org

This Permit is subject to the following conditions:

The Permittee shall perform the construction and the work in accordance with the drawings, plans and specifications approved by the Park Development Division (PDD), Montgomery County Department of Parks.

The Permittee shall repair, maintain, replace, and safeguard all of the Permittee’s property and equipment on Park Property, subject to the prior approval of the Maryland - National Capital Park and Planning Commission (Commission) Inspector.

The (Commission) may revoke this Permit for violation of a condition of this Permit.

The Permittee shall have a copy of this Permit any time the Permittee is on Park Property and available for inspection upon request by Commission staff.

The Permittee shall not remove, clear and/or trim trees outside the area covered by this Permit without the prior approval of the Commission Inspector. The Permittee may remove, clear and/or trim trees within the area covered by this Permit, unless otherwise provided in the drawings, plans, specifications or this Permit.

The Permittee shall provide that any stream crossing has sediment protection during construction and Washington Suburban Sanitary Commission Class 2 rip rap on both stream banks pursuant to drawings, plans and specifications approved by the Commission. The Permittee shall obtain approval of all appropriate Federal, State, and local government agencies prior to performing any stream crossing.

The Permittee shall provide that the final construction grades are the same as the original grades in the construction area unless otherwise approved pursuant to this Permit.

The Permittee shall provide all excavation, grading and sediment control measurers required by all appropriate Federal, State and Local government agencies.

The Permittee shall fine grade, seed, and mulch, using Commission approved seed mix, any disturbed area which originally contained grass. The Permittee shall restore any other area to its original or better condition, including reforestation where required by the Commission. The Permittee shall perform the work in a timely manner to the satisfaction of the commission Inspector.

All grading on M-NCPPC property shall be performed in accordance with M-NCPPC Section 200, Excavation, Filling and Grading specifications; (See attached copy).

All disturbed areas shall be stabilized with seed and mulch in accordance with M-NCPPC Section 705; Seeding and Sodding of Turf Areas; (See attached copy). Meadow areas shall be stabilized with the specified M-NCPPC native seed mix as directed by Commission staff.

The Permittee shall obtain all required permits from Federal, State and Local government agencies and shall comply with all applicable Commission laws, regulations and rules and all applicable Federal, State and Local laws, regulations, and ordinances.

The Permittee shall clean and clear the construction area of any debris, materials, tools and equipment upon completion of the work.

The Permittee shall repair or replace any property, equipment or infrastructure of the Commission damaged, destroyed or removed by the Permittee, in accordance with the Commission’s Standard Details and Technical Specifications and subject to the prior approval of the Commission Inspector. All repairs shall be completed to the satisfaction of Commission.

All work associated with this permit shall be performed in accordance with the “General Notes for Work on M-NCPPC Property”: (See attached copy).

The permittee shall be responsible for all maintenance of traffic as necessary while conducting the proposed work.

Storage of construction equipment and/or materials on Commission property is prohibited unless prior authorization from the Commission is obtained.

The Permittee shall indemnify and save harmless the Commission, its officers, employees, agents and representatives, from and against all actions, liability, claims, suits, damages, costs or expenses of any kind which are made against or incurred by the Commission arising from the Permittee’s negligence, negligent performance of or failure to perform any of the Permittee’s obligations under the provisions of this Permit. The Permittee shall provide insurance to insure this indemnification as provided in paragraph 14.

The Permittee shall maintain casualty insurance, liability insurance and property insurance, or self-insurance with this coverage, which protects the Commission from claims for damages from bodily injury, including death, or property damage, which may arise from performance of work by the Permittee under this Permit. The Permittee shall furnish a certificate of insurance or appropriate documents showing self-insurance, which is satisfactory to the Commission. The certificate of insurance or self-insurance shall name the Commission as an additional insured and shall provide for 45 days advance written notice to the Commission in the event of termination, modification or cancellation of coverage.

The Permittee shall assume all risks in connection with the work on Park Property under this Permit.

The Commission reserves the right to make minor adjustments to the Limits of Disturbance in the field to minimize impacts to Park property.

The contractor shall be responsible for maintaining safe access to Commission facilities throughout the construction period and to provide signage which may be required at the direction of the Commission inspector. Staging areas and access routes shall be as approved in the permit but may be adjusted in the field by the Commission inspector to minimize impact to Park property.

All plant materials, planting locations, and any plant substitutions shall be approved and inspected by the Commission horticulturist. The horticulturist may be contacted through the Commission inspector.

Special protection measures such as a 12-inch-thick mulch layer for access bedding, tree protection fencing, and additional sediment controls shall be provided as directed in the field by the Commission inspector. The Commission shall inspect the condition of trees throughout construction and reserves the right to require repair by a qualified arborist, or replacement of any damaged trees at no cost to the Commission.

The Permittee shall be solely responsible for utility clearance prior to the start of work. Miss Utility shall be contacted as prescribed by law. The Permittee shall also be responsible for location of Commission owned on-site utilities. All utility locating shall be at the Permittee’s own expense.

A concerted effort shall be made by the contractor to protect trees adjacent to the Limits of Disturbance (LOD). If trees outside the LOD are damaged, these procedures shall be followed to repair the damage:

1) If the Commission Arborist determines that a tree or shrub is damaged and deemed repairable, the Contractor shall retain an Arborist to make those repairs at no cost to the Commission.

2) If the Commission Arborist determines that a tree or shrub is damaged and not repairable, the Contractor will be responsible for the following:

a) Removal and cleanup of the tree or shrub at the Contractors expense.

b) Replacement of the tree in kind or as determined by the Commission Arborist.

c) Payment to the Commission for the value of the tree or shrub as established through procedures of the Council of Tree and Landscape Appraisers or another method acceptable to the Commission Arborist.

Any trimming of tree branches or the removal of any trees shall be done under the supervision of the Commission arborist.

An as-built of the permitted area shall be submitted in plan form and in electronic form if applicable. The electronic version must be in a format acceptable to the Commission. All changes or variations from the approved plan must be shown in redline in both paper and electronic form.

Warranties:

a. Generally, in addition to any other warranties at law or set out elsewhere in this Permit, or Agreement if executed between the Commission and the Permittee, the Permittee warrants, for one year after final acceptance of the work, that the Work performed under this Permit conforms to the Permit requirements, or Agreement if executed, and is free from any defect of equipment, material or design furnished, or workmanship performed by the Permittee or any of its subcontractors or suppliers at any tier. The Permittee also warrants that all mechanical and electrical equipment, machines, devices, etc. shall be adequate for the use for which they are intended and shall operate with ordinary care and attention in a satisfactory and efficient manner. Under this warranty the Permittee shall remedy at its own expense any such failure to conform, or any such defect. In addition, the Permittee shall remedy at its own expense any damage to Commission owned or controlled real or personal property when that damage is the result of the Permittee's failure to conform to Permit requirements or any defect of equipment, material, workmanship, or design. The Permittee shall also restore any work damaged in fulfilling the terms of this section. The Permittee's warranty with respect to Work repaired or replaced hereunder will run for one year from the date of the acceptance by the Commission of the repair or replacement.

b. Notice of Defect or Damage: The Commission will notify the Permittee in writing within a reasonable time after the discovery of any failure, defect or damage.

c. Third-Party Warranties: In addition to the other rights and remedies provided by this section, all subcontractors', manufacturers’, and suppliers' warranties, express or implied, respecting any Work and materials, at the direction of the Commission shall be enforced by the Permittee for the benefit of the Commission. In such case, if the Permittee's warranty under subsection (a.) above has expired, any suit by the Commission to enforce a subcontractor's, manufacturer's or supplier's warranty shall be at the expense of the Commission. The Permittee shall obtain and provide to the Commission copies of all warranties which the subcontractors, manufacturers or suppliers would give in normal commercial practice.

d. Written Warranties: The Permittee shall require all such warranties to be executed in writing to the Commission.

Additional conditions: (As Checked)

In the event this project is subject to a Forest Conservation Plan (FCP), the permittee shall contact Joshua Kaye at 301-495-4722 to arrange a FCP inspection. This inspection is separate and in addition to inspections required of this permit.

The Permittee shall secure and place a bond, in a form satisfactory to the Commission, in the amount of $_____________ for the benefit of the Commission as collateral and for restoration purposes should the Permittee default. This bond must be valid for a period of three years, or until the Commission approves the site restoration work as required in accordance with this Permit.

The Bonds in the appropriate amounts shall run to the sole benefit of the Commission and not be conditional. The entities comprising the Owners are jointly and severally liable for the construction of the Facilities herein. It is agreed by the parties hereto that the Commission may use a Bond for a Facility it securitizes only if the Owners fail to satisfactorily construct the bonded Facility contained herein or fail to construct the bonded facility in accordance with the plans to be filed and approved by the M-NCPPC. The Commission's decision as to the satisfaction of the construction of the Facilities shall be binding on all parties and their successors and assigns. Upon determination that a Facility has been completed and is satisfactory to the Commission, the Commission shall return the Bond for that Facility to the Owners. In the event the Bonds are used by the Commission due to the failure of any of the Owners to satisfactorily complete construction of a Facility, the Commission shall not incur any responsibility or liability for the construction, installation or completion of any of the Facilities.

The permittee shall have the soil boring locations staked-out prior to the preconstruction meeting.

The permittee shall utilize the smallest and lightest equipment possible to conduct the soil borings excavations and sampling. The Commission reserves the right to require the permittee to use matting or approved equal to protect turf or environmentally sensitive areas.

The access to the soil boring locations shall be as directed by Commission staff at the preconstruction meeting. There shall be no other access to the work area through Commission property.

The Commission reserves the right to require the permittee to move the location of the proposed soil boring(s) if it is determined that they conflict with any existing infrastructure on park property.

All boring holes or test pit sites located within the asphalt paved areas shall be backfilled, compacted and topped with the existing pavement section of Surface Course Hot Mix Asphalt.

GENERAL NOTES FOR WORK ON M-NCPPC PROPERTY

1. ALL NOTES SHOWN ON THE DRAWINGS ARE TYPICAL UNLESS

OTHERWISE SHOWN OR NOTED.

2. A PRE-CONSTRUCTION MEETING WILL BE CONDUCTED BY THE M-NCPPC

CONSTRUCTION MANAGER PRIOR TO START OF ANY CONSTRUCTION

RELATED ACTIVITY AT THE PROJECT SITE.

3. NO CLEARING, GRUBBING OR GRADING SHALL COMMENCE UNTIL THE

LIMITS OF DISTURBANCE (LOD) ARE STAKED IN THE FIELD AND ARE

APPROVED BY THE M-NCPPC CONSTRUCTION MANAGER, AS WELL AS

ANY OTHER APPLICABLE PERMITTING AGENCIES AFTER THE LIMITS ARE

APPROVED. NO DISTURBANCE WILL BE ALLOWED OUTSIDE OF THE

APPROVED LIMITS. ANY ITEMS DISTURBED OUTSIDE OF THE APPROVED

LIMITS, WILL BE REPLACED AT THE CONTRACTORS OWN EXPENSE.

4. THE ENTIRE LOD SHALL BE FENCED AS DIRECTED BY THE PARK

CONSTRUCTION MANAGER. WHERE SILT FENCE, SUPER SILT FENCE,

OR TREE PROTECTION FENCE IS NOT REQUIRED, ORANGE BLAZE

SAFETY FENCE MAY BE USED.

5. FIELD RUN TOPOGRAPHY SURVEY PROVIDED BY

_____(Surveyor)___________ IN ___(Date)______. SURVEY IS IN STATE

PLANE DATUM NAD88 AND NAVD83 BOUNDARIES SHOWN ARE DERIVED

FROM DEED AND PLAT INFORMATION.

6. M-NCPPC MAY ADJUST AND MODIFY THE LIMITS OF DISTURBANCE IN

THE FIELD TO MINIMIZE IMPACTS OF WORK.

7. CONTRACTOR SHALL BE SOLEY RESPONSIBLE FOR MAINTAINING SAFE

FACILITY ACCESS THROUGHTOUT CONSTRUCTION AND PROVIDE ANY

APPROPRIATE DETOURS, TEMPORARY FACILITIES, AND SIGNAGE AS

REQUESTED BY THE M-NCPPC CONSTRUCTION MANAGER.

8. CONTRACTOR SHALL VERIFY ALL DIMENSIONS AND CONDITIONS

SHOWN ON THE DRAWINGS AND REPORT TO M-NCPPC’S

CONSTRUCTION MANAGER ANY ERROR OR INCONSISTENCY WITH THE

ACTUAL CIRCUMSTANCE IN THE FIELD BEFORE COMMENCING WORK.

9. THE CONTRACTOR SHALL STAKE-OUT THE LOCATION OF THE

FACILITIES AND MEET WITH THE M-NCPPC CONSTRUCTION MANAGER

TO REVIEW THE LOCATION. M-NCPPC RESERVES THE RIGHT TO

ADJUST THE LOCATIONS, AS NECESSARY.

10. SITE RESTORATION AND REPAIR/REPLACEMENT OF DAMAGED

INFRASTUCTURE SHALL BE IN ACCORDANCE WITH M-NCPPC DETAILS,

STANDARDS AND SPECIFICATIONS AT THE DIRECTION OF THE M-NCPPC

CONSTRUCTION INSPECTOR AT NO COST TO M-NCPPC.

11. TREE PROTECTION FENCING SHALL BE PER TREE PROTECTION FENCE

DETAIL SHOWN ON PLANS. TREE PROTECTION FENCING SHALL BE

INSTALL BY THE CONTRACTOR AND INSPECTED BY M-NCPPC

CONSTRUCTION MANAGER PRIOR TO START OF CONSTRUCTION.

12. ALL PLANTING SUBSTITUTIONS SHALL BE APPROVED BY M-NCPPC

CONSTRUCTION MANAGER. PLANT MATERIALS AND LOCATIONS MUST

BE INSPECTED BY M-NCPPC PRIOR TO INSTALLATION.

13. PROVIDE DEER PROTECTION FENCING PER M-NCPPC’S SPECIFICATIONS

FOR ALL LANDSCAPE AND REFORESTATION TREE AND SHRUBS TO

PREVENT DAMAGE FROM DEER.

14. STAGING AREAS AND ACCESS ROUTES SHALL BE DETERMINED IN FIELD

AND APPROVED BY THE M-NCPPC CONSTRUCTION MANAGER, TO

MINIMIZE IMPACTS.

15. M-NCPPC MAY INSPECT CONDITION OF TREES THROUGHOUT

CONSTRUCTION AND REQUIRE REPAIR, REMOVAL, AND.OR

REPLACEMENT OF ANY DAMAGED TREES AT NO COST TO M-NCPPC.

16. CONSTRUCTION MANAGER MAY AUTHORIZE SPECIAL TREE AND TREE

ROOT PROTECTION MEASURES OTHER THAN SHOWN ON THESE PLANS

DURING CONSTRUCTION. THESE MAY INCLUDE, BUT NOT BE LIMITED

TO 12-INCH THICK MULCH LAYER ACCESS BEDDING, MATTING,

ADDITIONAL TREE PROTECTION FENCING, AND ADDITIONAL SEDIMENT

CONTROLS.

17. CONTRACTOR SHALL BE SOLELY RESPONSIBLE FOR IDENTIFYING THE

LOCATION OF ALL EXISTING UTILITIES PRIOR TO START OF WORK WITH

M-NCPPC CONSTRUCTION MANAGER. THE CONTRACTOR SHALL

MAINTAIN PROPER CLEARANCES BETWEEN ALL EXISTING AND

PROPOSED UTILITIES AT ALL TIMES AS REQUIRED BY THE UTILITY

COMPANES.

18. UTILITIES SHOWN HERE IN ARE BASED ON BEST AVAILABLE

INFORMATION. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO

VERIFY THE ACCURACY OF THIS INFORMATION. ANY COST ASSOCIATED

WITH THE REPAIR OR REPLACMENT OF UTILITIES DAMAGED BY THE

CONTRACTOR SHALL BE THE SOLE RESPONSIBILITY OF THE

CONTRACTOR. ANY DAMAGE MADE TO THE UTILITY SHALL BE

REPAIRED ON AN EMERGENCY BASIS PER THE LATEST SPECIFICATIONS

OF THE CONCERNED UTILITY AND COMPLETED WORK SHALL BE

APPROVED BY THE CONCERNED UTILITY. ANY DAMAGE SHALL BE

REPORTED AND DOCUMENTED IMMEDIATELY TO THE M-NCPPC

CONSTRUCTION MANAGER. REPAIR APPROVALS SHALL BE PROVIDED

TO THE M-NCPPC CONSTRUCTION MANAGER.

19. DISCREPANCIES, OMISSIONS, AMBIGUITIES, OR CONFLICTS IN OR

AMONG THE CONSTRUCTION DOCUMENTS OR DOUBT ABOUT THEIR

MEANING SHALL BE BROUGHT TO THE ATTENTION OF THE M-NCPPC

CONSTRUCTION MANAGER FOR DIRECTION BEFORE PROCEEDING WITH

WORK. IF CONFLICTS EXIST, THE MOST STRINGENT REQUIREMENT

SHALL GOVERN UNLESS OTHERWISE STATED IN WRITING BY THE M-

NCPPC’S CONSTRUCTION MANAGER.

20. PRIOR TO VEGETATIVE STABILIZATION, ALL DISTURBED AREAS MUST BE

TOPSOILED PER THE MONTGOMERY COUNTY “STANDARDS AND

SPECIFICATION FOR TOPSOIL.” IF ON-SITE MATERIALS DO NOT MEET

REQUIREMENTS OF TOPSOIL, COORDINATE WTH M-NCPPC REGARDING

TILLING-IN OF CERTIFIED COMPOST TO ON-SITE SOILS IN ORDER TO

MEET SPECIFICATIONS.

ÚÛ̂ PAVEMENT REMOVAL SHALL INCLUDE REMOVAL OF GRAVEL SUBBASE!

AND SCARIFICATION OF SUBGRADE, UNLESS OTHERWISE DIRECTED BY

÷˜ NCPPC.

ÚÚ̂ PRIOR TO START OF ANY CONSTRUCTION RELATED ACTIVITY AT THE!

PROJECT SITE, THE CONTRACTOR AND M-NCPPC CONSTRUCTION!

INSPECTOR SHALL RECORD EXISTING DAMAGED AND/OR PAVEMENT!

PATCHES TO ASSURE THAT PAYMENT WILL BE MADE IF THOSE!

DAMAGES ARE TO BE CORRECTED PRIOR TO ACCEPTING THE!

CONTRACTS AS COMPLETE. ADDITIONAL PATCHING AND/OR REPAIRS!

REQUIRED DUE TO CONSTRUCTION ACTIVITY WILL BE CONSIDERED AS!

INCIDENTAL TO CONTRACT.

ÚÒ̂ THIS SITE IS LOCATED IN THE ___Paint Branch_______ WATERSHED OF

MONTGOMERY COUNTY. RUNOFF FROM THIS SITE!DRAINS IN TO __(if applicable, write A MUNICPAL STORM DRAIN SYSTEM THAT OUTLETS TO THE)_(Provide closest named tributary here) TRIBUTARY.!THE CONTRACTOR

SHALL TAKE PRECAUTIONS NOT TO CONTAMINATE!THE RECEIVING

WATERS.

Section 200 - Excavation, Filling and Grading 200-1

May 2021

SECTION 200 - EXCAVATION, FILLING & GRADING

200.01 DESCRIPTION

Work consists of all labor, materials, equipment and services necessary for and incidental to the execution and completion of earthwork as indicated on the drawings and specified herein.

The extent of excavation, filling and grading is shown on the drawings. Preparation of subgrade for slabs and pavements is part of this work. Backfilling around facilities such as structures, curbs, pavements, etc., is also included as part of this work.

200.02 REFERENCE STANDARDS

MDSHA Section 916

AASHTO M145 and T180

ASTM A36, A328, D1556, and D2321

OSHA Requirements

NRCS-MD Code 378 Pond Standards and Specifications

M-NCPPC Section 723 – Landscape Soil

Section 728 – Athletic Fields

200.03 DEFINITIONS

A. Rock Excavation: Rock excavation consists of removal and disposal of mineral materials that cannot be excavated without the use of explosives or pneumatic equipment. It is not removable by use of a Caterpillar model D-8 Bulldozer or equivalent with a single-tooth ripper. Typical materials classified as rock are, solid rock, rock in ledges, and rock hard aggregate. Intermittent drilling performed to increase production but not necessary to permit excavation of material encountered will be classified as earth excavation.

B. Earth Excavation: Removal of any mineral materials not classified as rock.

C. Unsuitable Materials: Debris, man-made or fabricated materials, concrete spoil, decayable material, and soft, expansive or unstable matter which cannot be field compacted to densities specified herein.

200.04 MATERIALS

A. Fill and backfill (Refer to section 916 - MDSHA, Standard Specifications, latest version)

Minimum requirements:

1. Cohesionless materials shall be classified in accordance with AASHTO M145 as either

A-3 (sand) or A-2 (sand and fines), and the minimum dry unit weight shall not be less than 110 PCF maximum dry density as determined by ASTM D-1566 and AASHTO

T180.

2. Cohesive materials shall be classified in accordance with AASHTO M145 as either A-4

Section 200 - Excavation, Filling and Grading 200-2

(silt), A-5 (silt), A-6 (clay) or A-7 (clay) with a minimum dry unit weight not less than

105 PCF maximum dry density as determined by ASTM D1566 and AASHTO T180..

3. Backfill and Fill Materials: Satisfactory soil materials approved by the M-NCPPC

Construction Manager and free of rock or gravel larger than 2 inches (within the top 12 inches of subgrade) in any dimension, debris, waste, frozen materials, organic and other deleterious matter.

4. For topsoil please refer to Section 723 Landscape Soil.

B. Sheeting, shoring and bracing materials shall be timber, steel or aluminum , or a combination thereof, designed as required by a Professional Engineer registered in the State of Maryland, to retain the earth around structures, prevent cave-in and settlements, and to fulfill all safety requirements.

1. Timber shall be structural grade with minimum working stress of 1,100 psi.

2. Steel sheet piling shall conform to requirements of ASTM A328, continuous interlocking type. Struts, bracing and all other accessories required for the sheet piling system shall meet requirements of ASTM A36.

200.05 SUBMITTALS

Test Reports for Excavating, Filling, and Grading. The Contractor shall be responsible for hiring a Geotechnical Engineer to carry out soil testing for all structural fills and pond embankments and as required. The soil testing service shall submit two (2) copies of the following reports directly to the M-NCPPC Construction Manager, with a copy to the Contractor.

A. Verification of each footing compaction of the subgrade.

B. Field density test reports.

C. One optimum moisture-maximum density curve for each type of soil encountered.

D. Report of actual unconfined compressive strength and/or results of bearing tests of each 8” stratum tested.

E. Summary of all testing and certification (sealed by a Maryland licensed Professional

Engineer) that construction was completed in accordance with contract drawings and specifications.

200.06 QUALITY ASSURANCE

A. The Contractor must supply evidence of having performed similar fine grading work on at least three (3) other sites especially in regard to maintaining the degree of accuracy outlined in the grading specifications.

B. The equipment used shall be capable of producing work within the grading tolerance as specified within this specification.

Section 200 - Excavation, Filling and Grading 200-3

200.07 CONSTRUCTION

A. Site Information:

1. Data on indicated subsurface conditions received from the geotechnical company are not intended as representations or warrants of continuity of such conditions between soil borings. It is expressly understood that M-NCPPC will not be responsible for interpretations or conclusions drawn by Contractor. Data are made available for the convenience of the Contractor.

2. Additional test borings and other exploratory operations may be made by Contractor at no cost to M-NCPPC.

B. Existing Utilities: Locate existing underground utilities in the areas of work. If utilities are to remain in place, provide adequate means of protection during earthwork operations.

1. Should piping or other utilities be encountered during excavation, consult the M-NCPPC

Construction Manager immediately for directions as to procedures. Cooperate with M-

NCPPC and utility companies in keeping respective services and facilities in operation.

Repair damaged utilities to satisfaction of the utility company and M-NCPPC.

2. Do not interrupt existing utilities serving facilities occupied and used by the Commission or others, except when permitted in writing by the M-NCPPC Construction Manager and then only after acceptable temporary utility services have been provided.

C. Use of Explosives: Use of explosives is prohibited. If there are no other options, the use of explosives may be authorized with prior written permission from M-NCPPC and any authorities having jurisdiction. The Contractor is solely responsible for handling, storage, and use of explosive materials when their use is permitted.

D. Protection

1. Safety: Provide protective measures necessary for the safety of work personnel, the public and adjacent property. The Contractor shall be responsible to prevent cave-ins, collapse of walls, structures and slopes, both on and adjacent to the site.

2. Standards: Comply with regulations of local authorities having jurisdiction, including all applicable OSHA requirements.

3. Repair: Include the removal of damaged materials and replacement with new materials

(as required by original Contract Documents) where such materials are affected by settlement or other damage.

E. Site Preparation

Section 200 - Excavation, Filling and Grading 200-4

1. Excavation consists of cutting, removing, filling, compacting and grading of material encountered when establishing required grade elevations in accordance with plans and specifications that are not classified rock excavation or unauthorized excavation. All topsoil must be removed from all areas prior to grading. Topsoil shall be stripped, stockpiled and re-spread onsite on the unpaved areas.

2. Rock Excavation outside of these limits shall be carried out only at the discretion and direction of the M-NCPPC Construction Manager. If rock is not removed during the process of normal digging and ripping, then extend the excavation to expose the rock surface within the limit of original excavation. The Contractor shall contact the M-

NCPPC Construction Manager or his representative for further direction.

3. Unauthorized excavation consists of removal of materials in excavation under footings, foundation bases, retaining walls, slabs, slopes, site grading by extending indicated bottom elevations of footings or indicated subgrade elevations or indicated line grades or dimensions without specific direction of the M-NCPPC Construction Manager. All unauthorized excavation including remedial work such as backfilling and compacting with earth or gravel, lean concrete fill or any other material to bring elevations to grades as specified and to the satisfaction of the M-NCPPC Construction Manager, shall be carried out at the Contractor's expense.

4. Additional excavation: When excavation has reached the required grades, subgrade elevations and lines, notify the M-NCPPC Construction Manager, who will inspect the site. If unsuitable bearing materials are encountered at required elevations, the M-

NCPPC Construction Manager and/or Geotechnical Engineer may require further

(deeper) excavation and replacement of unsuitable (excavated) material.

a. All areas to be paved will be proof rolled at subgrade in the presence of the M-

NCPPC Construction Manager or Inspector. If deemed necessary, bad soils below subgrade will be undercut and replaced as described below. At the end of each day undercutting is performed, the Contractor shall certify, in writing, the quantity, in cubic yards, of undercutting performed in agreement with the M-NCPPC Inspector.

Both parties shall sign the certification, which shall be submitted to the M-NCPPC

Construction Manager.

b. Type 1 Undercutting: Wherever possible, remove unsuitable soils and distribute on-site in locations designated by the M-NCPPC Construction Manager; otherwise materials will be hauled off-site at no additional cost to M-NCPPC. Suitable soils will be placed in the undercut area from on-site sources: as directed by the M-NCPPC

Construction Manager. Refer to appropriate compaction section.

c. Type 2 Undercutting: Wherever possible, remove unsuitable soils and distributed on-site in locations designated by the M-NCPPC Construction Manager; otherwise materials will be hauled off-site at no additional cost to M-NCPPC. CR-6 stone or other select borrow material, as approved by M-NCPPC Construction Manager, will be hauled in and used as replacement material. Refer to appropriate compaction

Section 200 - Excavation, Filling and Grading 200-5 section.

5. Stability of Excavations: Slope sides of excavations to comply with local codes and ordinances having jurisdiction. Shore and brace where sloping is not possible due to space restrictions or stability of materials excavated. Maintain sides of slopes of excavations in safe conditions until completion of backfilling.

6. Dewatering:

a. Prevent surface water and subsurface or groundwater from flowing into excavations and flooding project site and surrounding area.

b. Do not allow water to accumulate in excavations. Remove water to prevent softening of subgrades, foundation bottoms, undercutting footings, and soil changes detrimental to stability of subgrades and foundations. Provide and maintain pumps, sumps, suctions and discharge lines, and other dewatering system components necessary to convey water from excavations.

c. Convey water removed from excavations to collecting or run-off areas with approval of MCDPS Inspector and M-NCPPC Construction Manager. All water shall be discarded into stabilized sediment trapping devices. Provide and maintain temporary drainage ditches and other diversions outside excavation limits for each structure. Do not use trench excavations as temporary drainage ditches.

d. Contractors shall be aware of low areas that are likely to experience groundwater seeps and take appropriate measures to properly dewater excavations in those areas.

e. Dewatering will be the responsibility of the contractor and shall be done in conformance with best management practices and shall be incidental to the contract. M-NCPPC shall not pay for areas requiring undercutting due to insufficient dewatering practices.

7. Material Storage:

a. Stockpile and protect satisfactory excavated materials, until required for backfill or fill. Place, grade and shape stockpiles for proper drainage.

b. Locate and retain soil materials away from edge of excavations.

c. Dispose of excess unsatisfactory and/or waste materials as specified hereinafter.

8. Excavation for Structures:

a. Conform to elevations and dimensions shown within a tolerance of plus or minus one

(1) inch and extending sufficient distance from footings and foundations to permit placing and removal of concrete formwork, installation of services, other construction and for inspection.

Section 200 - Excavation, Filling and Grading 200-6

b. In excavating for footings and foundations, do not disturb bottom of excavation.

Excavate by hand to final grade just before concrete is placed. Trim bottoms to required lines and grades to leave solid base to receive other work.

c. Concrete footings, foundations and like structures shall be placed at the elevations shown on the drawings or as specified. Buried walls of former structures, which may exist where footings, foundations, etc., are to be placed, are to be removed to 1 foot below the elevations of bottoms of such footings, foundations, etc. When this has been accomplished, the M-NCPPC Construction Manager shall inspect such walls and if they find them to be structurally sound, removal shall cease. However, if the

M-NCPPC Construction Manager considers further removal necessary, the

Contractor shall proceed until suitable conditions are reached. The Contractor shall accomplish such removal to the elevations of bottoms of footings, foundations, etc., as part of the contract; however, he shall be paid for required removal 1 foot below these elevations. Also, if due to the character of the soil or to encountering utilities or obstacles not known to exist, the M-NCPPC Construction Manager orders other additional excavation performed, the Contractor shall be paid for such work, as well as for further removal of walls, in accordance with applicable unit prices listed in the

Bid or Proposal. However, the Contractor will not be paid for excessive excavation as a result of an error on their part.

d. All topsoil shall be removed from areas where footings, foundations, pavement or structures are to be built. If the topsoil extends deeper than proposed elevations, then follow procedure given in the Additional Exaction section of this.

9. Excavation for Stone, Concrete, and Bituminous Pavements: Cut surface under pavements to comply with cross-sections, elevations and grades as shown. All excavated areas, which are to be paved, shall be compacted in accordance with paragraph 12 the

Fills and Backfills section of this specification

a. Where rock is encountered, carry excavation 1 foot below subgrade and backfill with suitable material approved by the Geotechnical Engineer.

b. All topsoil under areas to be paved with stone, asphalt or concrete or similar paving materials, shall be removed. If unsuitable material is encountered, all unsuitable material shall be removed until suitable soil is encountered as directed by the M-

NCPPC Construction Manager. At that point the M-NCPPC Construction Manager shall inspect the soil and if the suitable soil is located below than the required elevations for sub-base, sub-grade etc., the M-NCPPC Construction Manager shall direct the use of replacement material to bring grades up to required elevations. Such backfill materials shall be compacted in accordance with specifications for compaction until required density is achieved before proceeding with the next step.

Follow procedure given in the Additional Excavation section of this specification.

10. Excavation for Ditches: Cut ditches to cross-sections and grades as shown on the plans.

Deposit excavated materials to prevent cave-ins or material falling or sliding into ditch.

Section 200 - Excavation, Filling and Grading 200-7

Keep ditches free of debris until final acceptance of the work.

11. Cold Weather Protection: Protect excavation bottoms against freezing when atmospheric temperature is less than 35 degrees F.

12. Fills and Backfills:

a. Improved unpaved areas: Areas on which fill is to be placed shall be stripped of all topsoil and then scarified prior to placement of fill. Fill material shall be placed in 8-inch (maximum thickness before compaction) layers to be continuous and horizontal over the entire length of fill. Each layer of fill shall be compacted by an approved power roller. Compaction shall be carried out at optimum moisture content to a dry density of 85% for non-structural areas. See Section 723 Landscape Soil for compaction of landscape or grass areas. See Section 322 Storm Drainage and

Stormwater Management for installation and backfill requirements for SWM and

Drainage Pipes. For slopes steeper than 3:1 please see plans for specifications or follow instructions given by M-NCPPC Construction Manager. The dry density of the compacted fill shall be determined by ASTM D1556 and AASHTO T180. The moisture content of the compacted embankment layers shall be as mentioned elsewhere. The remaining embankment shall be suitable earth fill, free from stones that will be retained on a sieve with 3-inch square openings or as directed by the M-

NCPPC Construction Manager and compacted as specified above. Soft spots identified by the M-NCPPC Construction Manager during proof rolling will be undercut and backfilled. Proof rolling and compaction equipment shall meet the requirements as mentioned elsewhere. Payment for undercutting and backfilling to eliminate soft spots shall be made in accordance with the Contract provisions affecting the work.

b. Paved surfaces and slab backfill: Compact after proof rolling and each layer of backfill or fill materials to 95% maximum dry density.

c. Footings and Foundations: When permitted by M-NCPPC Construction Manager, sub-foundation concrete, CR-6 stone or other suitable materials, as approved by M-

NCPPC Construction Manager, can be placed under footings and foundations and shall be compacted to not less than 95% maximum density.

d. Athletic Fields: See Section 728 Athletic Fields for compaction information.

e. Pond embankments: Construction for stormwater management facilities and other pond embankments shall be completed in accordance with NRCS-MD Code No. 378

Pond Standards/ Specifications and MCDPS Water Resources Section requirements.

f. Moisture Control: The soils used in fill and backfill shall be moistened or aerated to within 2% of the optimum at no additional cost to the M-NCPPC.

1) Where the soil layer is too dry, the Contractor shall apply water uniformly using

Section 200 - Excavation, Filling and Grading 200-8 approved equipment to increase the moisture content to within 2% of the optimum.

2) Where the soil layer is too wet, the Contractor shall dry the soils by plowing or discing to aerate the soil and reduce the moisture content to within 2% of the optimum.

g. Tests including classification, fill placement, and soil compaction shall be made under the supervision of the M-NCPPC Construction Manager or Inspector.

Compaction Equipment shall be subject to approval by the M-NCPPC Construction

Manager and shall meet the following criteria based on soil type as follows:

1) Cohesionless Soils: Vibratory drum compactors weighing in excess of five (5) tons and capable of providing minimum impact force 30,000 lbs. at minimum frequency of 100 vpm with smooth drum. The maximum speed shall not exceed five (5) mph and a minimum of three (3) passes is required for all areas.

2) Cohesive Soils: Sheepsfoot or tamping rollers shall consist of metal drums or shells, not less than four (4) feet in diameter, equipped with self-cleaning tamping feet. Tamping rollers shall make at least four (4) complete coverages of the material being compacted and rolling shall continue until the tamping feet

"build-up" or "walkout" of the surface. Operating speeds of tamping roller shall not exceed five (5) mph.

13. Fine Grading

a. Uniformly grade areas within the limits of disturbance under this section, including the adjacent transition areas. Smooth finish surface within specified tolerances;

compact in accordance with the Fills and Backfills section of this specification, with uniform levels or slopes between points where elevations are shown, or between such points and existing grades.

b. Ditches: Finish ditches to ensure proper flow and drainage.

c. Grassed Areas: Finish areas to receive topsoil to within not more than 1 inch above or below the required subgrade elevations.

d. Pavements: Shape subgrade under pavement to line, grade and cross-section, with finish surface not more than 1/2 inch above or below the required subgrade elevation, duly compacted when tested with a 10’ straightedge.

e. Athletic Fields: The field shall be graded on the specified slope to a specified plane to the other or any point between the sides of said plane. If specified on the plans, the plane may require to be graded to a tolerance of ¼ inch when measured from side-to-side or end-to-end.

Section 200 - Excavation, Filling and Grading 200-9

f. Grading Surface of Fill under Building Slabs: Grade smooth and even, free of voids, compacted as specified, and to required elevation. Provide final grades within a tolerance of 1/2 inch when tested with a 10-foot straightedge.

g. Grading Surface for SWM or Drainage pipes: Tolerance for final grades shall be within a tenth (1/10) foot. Top six (6) inch of soil must be approved topsoil for vegetated or wooded areas. Refer to Section 322 Storm Drainage and Stormwater

Management for additional information.

14. Maintenance

a. Protection of Graded Areas: Protect newly graded areas from traffic and erosion and keep free of trash and debris. Repair and re-establish grades in settled, eroded, and/or rutted areas to specified tolerances.

b. Reconditioning Compacted Areas: Where completed compacted areas are disturbed by subsequent construction operations or adverse weather, scarify surface, reshape, and compact to required density prior to further construction.

15. Disposal of Excess and Waste Materials shall be the removal from M-NCPPC Property and disposed in an approved disposal location. Remove waste materials, including unacceptable excavated material, trash, and debris from the M-NCPPC property and legally dispose of it. Off-site disposal shall be considered incidental to contract.

200.08 MEASUREMENTS AND PAYMENT

Payment will be full compensation for all material, labor, equipment, tools and incidental items necessary to complete the work. Payment shall be made on a unit rate or lump sum basis as indicated in the bid items. The determination of rock excavation shall be measured in the field by

M-NCPPC and paid for as Unit Price per cubic yard or method acceptable to the M-NCPPC

Construction Manager. The rock excavation as measured in the field shall be deducted from the volume of Excavation item provided it is within the grading limits of the area.

Section 705 – Seeding and Sodding

October 2022

705-1

SECTION 705 – SEEDING AND SODDING FOR TURF AREAS

705.01 DESCRIPTION

Seeding: This work shall consist of soil preparation, seeding, mulching, over seeding, and mowing all areas designated for turf establishment as specified in the Contract Documents or as directed by the M-NCPPC CM.

Sodding: This work shall consist of soil preparation, watering and placing grass sod on prepared areas, as specified in the Contract Documents or as directed by the M-NCPPC CM.

705.02 REFERENCE STANDARDS

LCA Landscape Specification Guidelines, latest edition, Landscape Contractors

Association (LCA) of Maryland, Virginia and the District of Columbia.

UMD “Recommended Turfgrass Cultivars for Certified Sod Production and Seed

Mixtures in Maryland,” University of Maryland Turfgrass Technical Update TT-

77, most recent edition (formerly Agronomy Mimeo 77 or AM-77).

M-NCPPC Section 200 - Excavation, Filling, and Grading

Section 723 – Landscape Soil

Section 728 – Athletic Field Construction

705.03 DEFINITIONS

Sprigging is the process of removing stems (stolons or rhizomes) from mature bermudagrass stands and replanting the vegetative cuttings in a different location.

Cool season grasses for M-NCPPC include fescues (tall, creeping, and red) and bluegrass

Warm season grass for M-NCPPC is Bermuda grass.

705.04 MATERIALS

A. Soil: See Section 723 Landscape Soil.

B. No plastic netting shall be used on M-NCPPC projects. Also, only biodegradable stakes and staples to be used.

C. Grass Seed: Fresh, clean, new crop seed, certified by the Maryland Department of

Agriculture, Turf and Seed Section.

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1. Seed Mixture:

TYPE % BY WEIGHT % PURITY % GERMINATION

Kentucky Bluegrass 10% 98% 85%

Turf-Type Tall Fescue* 90% 98% 90%

Perennial Rye Grass** 0% 98% 85% *Use a blend of at least three (3) cultivars. Each cultivar shall make up a minimum of 10% of the total amount of Turf-Type Tall Fescue in the seed mixture.

**Up to 5% Perennial Rye Grass may be substituted for 5% Turf Type Tall Fescue and used with M-

NCPPC CM’s approval when fast establishment of a stand is deemed necessary.

2. Approved Varieties: Select approved varieties from “Recommended Turfgrass Cultivars for Certified Sod Production and Seed Mixtures in Maryland,” University of Maryland

Turfgrass Technical Update TT-77, most recent edition. Available from M-NCPPC CM, Maryland Turfgrass Council http://www.mdturfcouncil.org/Maryland-Resources-and-

Technical-Bulletins.

3. Weed Seed: Maximum 0.02% as tested by seed supplier.

4. All seed and labeling must fully comply with the Maryland Seed Law and these specifications.

5. All seed must be state certified and blended under the supervision of the Maryland

Department of Agriculture, Turf and Seed Section.

6. Each bag of seed shall contain proper label and certification tag.

D. Mulching and Stabilizing Materials:

1. Straw: Bright, small grain type straw. Shall be free of mildew, rot and noxious weed seeds. Apply ½ inch to ¾ inch thick layer or 60 to 80 bales per acre. All straw mulch shall be bound with a suitable binder or straw shall be rolled thoroughly with a crimping roller in several directions to prevent erosion of the soil and/or mulch. See LCA, Landscape Specification Guidelines, Seed and Sod specifications.

2. Hydro Mulch: Biodegradable cellulose-fiber mulch, nontoxic, free of plant-growth or germination inhibitors with a maximum content of 15% and pH range of 4.5 to 6.5, applied at a net dry weight of 750 pounds per acre. See LCA, Landscape Specification

Guidelines, Seed and Sod specifications.

3. Erosion Control Blankets: Location to be determined by the M-NCPPC CM. Rolanka

BioD-Mat 70 or approved equal may be used only if approved by the M-NCPPC CM.

No biodegradable or plastics shall be used.

4. The M-NCPPC CM may determine based on site conditions that mulch may not be required.

http://www.mdturfcouncil.org/Maryland-Resources-and-Technical-Bulletins http://www.mdturfcouncil.org/Maryland-Resources-and-Technical-Bulletins

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E. Sod:

1. Maryland Certified (labeled), inspected and approved by the Maryland Department of

Agriculture.

2. M-NCPPC reserves the right to inspect the sod at its origin. The Contractor must provide the sod farm location so that the M-NCPPC CM can inspect and approve the sod before harvesting. This information must be provided 30 days before harvest.

3. Seed Mixture:

TYPE % BY WEIGHT % PURITY % GERMINATION

Kentucky Bluegrass 10% 98% 85%

Turf-Type Tall Fescue* 90% 98% 90% *Use a blend of at least three (3) cultivars. Each cultivar shall make up a minimum of 10% of the total amount of Turf-Type Tall Fescue in the seed mixture.

4. Approved Varieties: Select approved varieties from “Recommended Turfgrass Cultivars for Certified Sod Production and Seed Mixtures in Maryland,” University of Maryland

Turfgrass Technical Update TT-77, most recent edition. Available from M-NCPPC CM, Maryland Turfgrass Council

5. Thickness of Cut: The thickness of the roots and soil shall be ½ inch to ¾ inch.

6. Pad Size: Large roll sod should be used where practical. If not practical, individual pieces of sod may be used. Individual pieces of sod shall be cut to the supplier’s standard width and length. Maximum allowable deviation from standard widths and lengths shall be 5%.

Broken pads and torn or uneven ends will be rejected.

7. Strength of Sod Sections: Under ideal conditions, standard size sections of sod shall be strong enough to support their own weight and retain their size and shape when suspended vertically from a firm grasp on the upper 10% of the section without the use of netting.

8. Sod Viability: Sod shall not be harvested or transplanted under drought conditions.

9. Time Limitations: Under optimal conditions, sod shall be harvested, delivered and installed within a period of 36 hours. During periods of unseasonably high temperature and/or low relative humidity, installation shall occur within 24 hours from harvest. Sod not transplanted within this period shall be inspected and approved or rejected by the M-

NCPPC CM prior to installation.

10. Sod Staples: Biodegradable sod staples shall be used on slopes greater than 3:1. Sod shall be stapled at a minimum of four (4) staples per square yard of sod. Metal staples are prohibited.

http://www.mdturfcouncil.org/resources/Documents/TT-77%20Recommended%20Turf%20Cultivars%20For%20Certified%20Sod%20Production%20And%20Seed%20Mixtures%20in%20Maryland%202019.pdf http://www.mdturfcouncil.org/resources/Documents/TT-77%20Recommended%20Turf%20Cultivars%20For%20Certified%20Sod%20Production%20And%20Seed%20Mixtures%20in%20Maryland%202019.pdf

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11. The sod soil must match the soil type of the finished soil prepared areas.

F. Sprigging Bermuda grass: Sprigging is the preferred method of Bermuda grass establishment.

At the discretion of the M-NCPPC CM, other methods may be approved.

G. Pesticide and Fertilizer Uses:

1. Pesticides Use: All pesticides shall be pre-approved by the M-NCPPC Construction

Manager 7 business days prior to application for the intended uses and application rates.

Approved pesticide applications shall be performed by an applicator certified by the State of Maryland. Any herbicide, insecticide or fungicide must be registered and approved by

EPA and recommended by manufacturer for each specific problem and as required for

Projec…