Common use of Maintenance of Premises Clause in Contracts

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, LESSEE agrees to maintain at the expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly control or vent all solvents, degreasers, smoke, odors, etc, and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be at LESSEE's expense. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and premises*and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, and chemical, corrosion, or water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, *.* LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in with LESSOR’s written consent during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass bulbs and other glass thereinglass, acknowledging that the leased premises premises*** are now in good order and the light bulbs and glass whole. LESSEE will promptly shall at all times properly control or and vent all solvents, degreasers, radioactive materials, smoke, odors, etcand any other materials that may be harmful, and shall not cause the area surrounding the leased premises or any other common area as defined below to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, lines or any other portion of the building which results from ****the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite Masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's ’s expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any Any***** increase in air conditioning equipment or electrical capacity, or any installation and/or or maintenance of any “non-building standard” leasehold improvements or equipment which is necessitated by some specific aspect of LESSEE's ’s use of the leased premises premises, whether installed by LESSOR, LESSEE or a prior occupant, shall be LESSEE’s sole responsibility, at LESSEE's ’s expense, and subject to LESSOR’s prior written consent. All maintenance provided by LESSOR shall be during LESSOR's ’s normal business hours.*. *except LESSOR’s negligence ***upon delivery will be ****inappropriate *****After delivery of the leased premises, any

Maintenance of Premises. Except as otherwise provided below, LESSOR will be responsible for all the structural maintenance of the leased premises and for the normal daytime maintenance of all space the roof, landscaping, heating and cooling equipment, sprinklers, doors, locks, plumbing, plumbing and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, willful or negligent acts of LESSEE or others, and chemical, corrosion or water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the lease term or as they may be put in with LESSOR'S written consent during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass bulbs and other glass thereinglass, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly shall properly control or and vent all solventschemicals, degreasersradioactive materials, smoke, odors, etcodors and other materials that may be harmful, and shall not cause the area surrounding the leased premises or any other common area to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, lines or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not but permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine mezzanine-type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet any flooring with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any Notwithstanding the foregoing, any increase in heating. ventilating, air conditioning conditioning, plumbing or electrical equipment or electrical capacity, or and any installation and/or or maintenance of any "non-building standard" leasehold improvements or equipment which is necessitated by associated with some specific aspect of LESSEE's use of the leased premises use, whether installed by LESSOR, LESSEE or a prior occupant, shall be LESSEE's sole responsibility, at LESSEE's expense, and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for maintenance and replacement (if necessary) of the existing standard heating and cooling equipment serving the office portion of the leased premises and all structural and roof maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or othersLESSEE, chemical, water or corrosion damage from any source, except caused solely by LESSOR's gross negligence and maintenance of the space heating, ventilating, and cooling units exclusively serving the laboratory portion of the leased premises (collectively, the "Laboratory HVAC Unit") and of any non "building standard" leasehold improvements, . LESSEE agrees to maintain and replace at its expense the expense Laboratory HVAC Unit and maintain all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be at LESSEE's expense. All maintenance provided by LESSOR shall be during LESSOR's normal business hours. LESSOR shall keep in good order, condition, and repair the roof of the Building (including using reasonable efforts to keep the roof water tight), all gutters and downspouts, foundations, exterior (including exterior painting and finish) and structural portions of the Building, all Building systems serving the Building, and all plumbing lines from the point it is brought into the Building to the point it services LESSEE and its leased premises. LESSOR's obligations shall include the obligation to make all necessary repairs, replacements or alterations to the roof, the exterior walls, the foundation, the floor slabs, and all other structural elements of the Building, and to maintain the parking area.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will shall protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be at LESSEE's expense. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will shall be responsible for all structural maintenance of the leased premises and for the normal daytime [ILLEGIBLE] maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, willful or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "non-building standard" standard leasehold improvements, whether installed by LESSOR, LESSEE or a prior occupant. LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in with LESSOR's written consent during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, necessary to replace light bulbs, plate glass bulbs and other glass thereinglass, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly shall at all times properly control or and vent all solvents, degreasers, radioactive materials, smoke, odors, etcand any other materials that may be harmful, and shall not cause the area surrounding the leased premises or any other common area as defined below to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any an wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite Masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises premises, whether installed by LESSOR, LESSEE or a prior occupant, shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises premises, including, without limitation, [illegible] structural floor slabs and columns, and exterior windows, and for all maintenance and repair of the normal daytime maintenance common areas of the building, all space heating and (b. illegible)and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or othersLESSEE, chemical, water or corrosion damage from any source, source,(c. illegible) and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other non-structural aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include includes any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damagedamage subject to LESSOR's obligations to maintain and repair the heating system. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be at LESSEE's expense. All maintenance and repair provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for maintenance of the common areas and all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, LESSEE agrees to maintain at the expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or fire, other casualty or LESSOR's negligence or misconduct only excepted, and whenever necessary, necessary to replace light bulbs, plate glass and other glass therein, acknowledging that the leased lease premises are now will be in good order and upon delivery by LESSOR following __, and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped stopped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include includes any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be at LESSEE's expense. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR Lessor will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, under the control of LESSEE, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly property control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be at LESSEE's expense. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "non-building standard" leasehold improvements, whether installed by LESSOR, or LESSEE. See Rider to Lease, Paragraph KK. LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in with LESSOR's written consent during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass bulb and other glass thereinglass, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly control or shall at all times properly cover and vent all solvents, degreasers, radioactive materials, smoke, odors, etcand any other materials that may be harmful, and shall not cause the area surrounding the leased premises or any other common area as defined below to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by from LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite Masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any Except for installation of those items outlined in the attached exhibits, any increase in air conditioning equipment or electrical capacity, or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises premises, whether installed by LESSOR, LESSEE or a prior occupant, shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of all the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiringpremised, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and all maintenance of any non "building standard" leasehold improvementsimprovements installed by or for LESSEE after the Commencement Date. "Structure" or "structural" for purposes of this lease shall mean and include only the following: foundation; roof framing (specially excluding, without limitation, the ceiling (of which the underdeck of the roof is not to be considered a part); bearing columns; bearing walls (specially excluding without limitation the interior surfaces thereof), floor slab and subflooring; space heating and cooling equipment; sprinklers; and utility supply lines that serve the leased premises in common with premises other than the leased premises. The costs of such maintenance shall be included in the Operating Costs, as defined under Section 5 hereof. LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, excepting only (i) normal wear and tear and tear, (ii) damage by fire or other casualty only exceptedcasualty, and (iii) damage caused by the negligent acts or omissions of LESSOR or its agents or contractors, and whenever necessary, to replace light bulbsbulbs and interior glass therein. At LESSEE's request, plate LESSOR will replace interior glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass wholeLESSEE shall pay LESSOR's invoices therefor. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc., and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If LESSEE shall, however, have the leased premises include any wooden mezzanine type spaceright to keep a small number of laboratory animals from time to time in accordance with all applicable laws, the floor capacity of such space is suitable only for office usecodes and ordinances or governmental permits or licenses, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, which LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damagefirst obtain. Any increase in air conditioning equipment or electrical capacity, or any installation and/or maintenance of equipment which is necessitated by some specific aspect of LESSEE's change in use of the leased premises from permitted uses shall be at the LESSEE's expense. All maintenance provided by LESSOR shall be during LESSOR's normal business hours; provided that LESSOR shall use commercially reasonable efforts not to materially interfere with LESSEE's use or occupancy of the leased premises, and provided further that janitorial services shall be supplied after normal office hours. LESSOR shall also maintain and repair the common areas and facilities serving the leased premises and Building, including without limitation common walkways, driveways, parking areas and lighting, freight or loading areas, lobbies, hallways, stairways, elevators and ramps in good order and repair, consistent with other first-class office buildings in the north suburban Boston market. To the extent that LESSOR shall receive written notice from any governmental agency having jurisdiction that the Building or the Property is in violation of any applicable law, regulation or ordinance, and such violation does not arise from the LESSEE's breach of this Lease or from LESSEE's specific use of the leased premises, LESSOR shall be responsible for taking such steps as LESSOR may deem commercially reasonable to contest such notice or cure such violation (provided that no contest shall cause LESSEE to incur any criminal or civil liability or substantially impede access to or occupancy of the leased premises).

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises [insert addendum 9a] and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others[insert addendum 9b], chemical, water or corrosion damage from any sourcesource [insert addendum 9c], and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear [insert addendum 9d], other taking by eminent domain and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass wholewhole [insert addendum 9e]. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause e the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hourshours [insert addendum 9f].

Maintenance of Premises. LESSOR LXXXXX will be responsible for all structural maintenance of the leased premises and for the normal daytime day time maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, and chemical, corrosion, or water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, LESSEE . LXXXXX agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in with LXXXXX’s written consent during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass bulbs and other glass thereinglass, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly shall at all times properly control or and vent all solvents, degreasers, radioactive materials, smoke, odors, etcand any other materials that may be harmful, and shall not cause the area surrounding the leased premises or any other common area as defined below to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite Masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's ’s expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or or maintenance of any “non-building standard” leasehold improvements or equipment which is necessitated by some specific aspect of LESSEE's ’s use of the leased premises premises, whether installed by LESSOR, LESSEE or a prior occupant, shall be LESSEE’s sole responsibility, at LESSEE's LXXXXX’s expense, and subject to LXXXXX’s prior written consent. All maintenance provided by LESSOR shall be during LESSOR's ’s normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's LESSORS expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. Except as otherwise provided below, LESSOR will be responsible for all the structural maintenance of the leased premises and for the normal daytime maintenance of all space the roof, landscaping, heating and cooling equipment, sprinklers, doors, locks, plumbing, plumbing and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, willful or negligent acts of LESSEE or others, and chemical, corrosion or water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the lease term or as they may be put in with LESSOR’s written consent during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass bulbs and other glass thereinglass, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly shall properly control or and vent all solventschemicals, degreasersradioactive materials, smoke, odors, etcodors and other materials that may be harmful, and shall not cause the area surrounding the leased premises or any other common area to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE Lessee shall be solely responsible for any damage to plumbing equipment, sanitary lines, lines or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine mezzanine-type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet any flooring with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's ’s expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase Notwithstanding the foregoing, any increasing in heating, ventilating, air conditioning conditioning, plumbing or electrical equipment or electrical capacity, or and any installation and/or or maintenance of any “non-building standard” leasehold improvements or equipment which is necessitated by associated with some specific aspect of LESSEE's use of the leased premises ’s use, whether installed by LESSOR, LESSEE or a prior occupant, shall be LESSEE’s sole responsibility, at LESSEE's ’s expense, and subject to LESSOR’s prior written consent. All maintenance provided by LESSOR shall be during LESSOR's ’s normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE LESSEE* or others, chemical, water or corrosion damage from any source, ,** and maintenance of any non "“non-building standard" ” leasehold improvements, whether installed by LESSOR, LESSEE or a prior occupant. LXXXXX agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in with LXXXXX’s written consent during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass bulbs and other glass thereinglass, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly shall at all times property control or and vent all solvents, degreasers, radioactive materials, smoke, odors, etcand any other materials that may be harmful, and shall not cause the area surrounding the leased premises or any other common area as defined below to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite Masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's ’s expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's ’s use of the leased premises premises, whether installed by LESSOR, LESSEE or a prior occupant, shall be LESSEE’s sole responsibility, at LESSEE's expenseLXXXXX’s expense and subject to LXXXXX’s prior written consent. All maintenance provided by LESSOR shall be during LESSOR's ’s normal business hours.. *, its agents, employees or invitees **except LXXXXX’s negligence

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling cooling. equipment, sprinklers, doors, locks, plumbing, plumbing and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and arid maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, . damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, . LESSEE will protect carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be at LESSEE's expense. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all common areas, space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "“building standard" ” leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now will be in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's ’s expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's ’s use of the leased premises shall be LESSEE’s sole responsibility, at LESSEE's expense’s expense and subject to LESSOR’s prior written consent. All maintenance provided by LESSOR shall be during LESSOR's ’s normal business hours.

Maintenance of Premises. Except as otherwise provided below, LESSOR will be responsible for all the good structural maintenance of the entire Building, its common areas, parking areas and structural components in the leased premises and for the normal daytime good maintenance of all space the roof, heating and cooling equipment, sprinklers, doors, locks, plumbing, plumbing and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, willful or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance except as a result of any non "building standard" leasehold improvements, LESSOR’s acts or omissions. LESSEE agrees to maintain at the its expense all other non-structural aspects of the leased premises in the same condition as they are at the commencement of the Lease term or as they may be put in with LESSOR’s written consent during the term of this leaseLease, normal wear and tear and tear, damage by fire or fire, other casualty or LESSOR’s breach of its Lease obligations only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that . All waste from the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly control or vent all solvents, degreasers, smoke, odors, etc, and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste deposited in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, lines or any other portion of the building Building which results solely from the improper discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in heating, ventilating, air conditioning conditioning, plumbing or electrical equipment or electrical capacity, or and any installation and/or or maintenance of any “non-building standard” leasehold improvements or equipment which is necessitated by associated with some specific aspect of LESSEE's use of the leased premises ’s use, whether installed by LESSOR, LESSEE or a prior occupant, shall be be, except as otherwise provided in this Lease, LESSEE’s sole responsibility, at LESSEE's ’s expense, and subject to LESSOR’s prior written consent. All maintenance provided by LESSOR shall be during LESSOR's ’s normal business hourshours except in an emergency. If LESSOR shall fail to make any repairs which LESSOR shall be required to make under this Lease or is otherwise in default of its obligations, and if such repairs shall not be made by LESSOR or such default cured within thirty (30) days after written notice from LESSEE setting forth the need for such repairs or other LESSOR action (or such shorter period of time as shall be reasonable under the circumstances, in the event of an emergency, or in the event the failure to make the repair shall cause damage to the leased premises, or interference with LESSEE’s business operations), which notice shall advise LESSOR of LESSEE’s intention to make such repairs on LESSOR’s behalf, then, if such repairs are not timely made by LESSOR, LESSEE shall be permitted to make such repairs on behalf, and for the account, of LESSOR, and LESSEE shall be permitted to offset the reasonable cost of such repairs together with the highest legal rate of interest against all rent and additional rent due under the Lease.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises including, without limitation, that required in connection with the roof, exterior walls, floor slabs, and common areas, and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE LESSEE, its agents, employees, or othersinvitees, chemical, water or corrosion damage from any source, source except LESSOR's negligence and maintenance of any non "non-building standard" leasehold improvements, whether installed by LESSOR, LESSEE or a prior occupant. LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in with LESSOR's written consent during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass bulbs and other glass thereinglass, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly shall at all times properly control or and vent all solvents, degreasers, radioactive materials, smoke, odors, etcand any other materials that may be harmful, and shall not cause the area surrounding the leased premises or any other common area as defined below to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite Masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises premises, whether installed by LESSOR, LESSEE or a prior occupant, shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals animal within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling roiling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any sourcesource except Lessor's negligence, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours, within a reasonable time after notice by LESSEE.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or or maintenance of equipment which is necessitated by try some specific aspect of LESSEE's use of the leased premises shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, plumbing and electrical electric wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only exceptedexpected, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, solvents degreasers, smoke, odorsodors , etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, equipment sanitary lines, lines or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. premises If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be LESSEE's sole responsibility at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises Leased Premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, and the parking areas and exterior lighting fixtures but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or othersits agents, chemical, water employees or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvementsvisitors, LESSEE agrees to maintain at the its expense all other aspects of the leased premises Leased Premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this leaseLease, normal wear and tear and damage by fire or other casualty only excepted, and whenever . Whenever necessary, to LESSEE shall replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises Leased Premises are now in good order and the light bulbs and glass whole. whole as of the Term Commencement Date, LESSEE will promptly control or vent all solvents, degreasers, smoke, odors, etc, shall ensure that the Leased Premises and shall not cause the area surrounding the leased premises to be are kept in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. , and LESSEE shall be solely responsible responsible, at its expense, for any damage to plumbing equipment, sanitary lines, or any other portion the cleaning of the building which results Leased Premises and the removal of all its trash and waste from the discharge or use of any acid or corrosive substance by LESSEE. Property, LESSEE shall not permit the leased premises Leased Premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or mechanical maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises Leased Premises shall be at LESSEE's expense. expense unless included within the Initial Improvements or unless otherwise agreed to in writing by LESSOR, All maintenance provided by LESSOR shall shall,. to the extent practicable, be accomplished during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all the structural (including the roof and exterior facade of the building) maintenance of the leased premises and premises. LESSOR at LESSEE'S expense shall be responsible for the normal daytime day time maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, septic and electrical wiring, but specifically excluding damage damaged caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE at LESSEE's expense shall be responsible for the maintenance of all heating and cooling equipment. LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor not suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be at LESSEE's expense. All maintenance provided by LESSOR shall be during LESSOR's normal business hourshours except in a case of emergency.

Maintenance of Premises. Except as otherwise provided below, LESSOR will be responsible for all the structural maintenance of the leased premises and for the normal daytime maintenance of all space the roof, landscaping, heating and cooling equipment, sprinklers, doors, locks, plumbing, plumbing and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, willful or negligent acts of LESSEE or othersits agents, chemicalemployees or invitees, and chemical corrosion or water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, LESSEE source except LESSOR’s negligence. XXXXXX agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the lease term or as they may be put in with LESSOR’s written consent during the term of this lease, normal wear and tear and damage by fire or other casualty only out excepted, and whenever necessary, necessary to replace light bulbs, plate glass bulbs and other glass thereinglass, acknowledging that the leased premises are now will be in good order and the light bulbs and glass wholewhole upon delivery by LESSOR. LESSEE will promptly shall properly control or and vent all solventschemicals, degreasersradioactive materials, smoke, odors, etcodors and other materials that may be harmful, and shall not cause the area surrounding the leased premises or any other common area to be in In anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, lines or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine mezzanine-type space, the floor capacity of such space is suitable only for office use, light tight storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect carpet any flooring with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's XXXXXX’s expense, LESSEE shall shag maintain sufficient heat to prevent freezing of pipes or other damage. Any Notwithstanding the foregoing, any increase in heating, ventilating, air conditioning conditioning, plumbing or electrical equipment or electrical capacity, or and any installation and/or or maintenance of any “non-building standard” leasehold improvements or equipment which is necessitated by associated with some specific aspect of LESSEE's use of the leased premises ’s use, whether installed by XXXXXX, LESSEE or a prior occupant, shall be LESSEE’s sole responsibility at LESSEE's LESSEES expense, and subject to LESSOR’s prior written consent. All maintenance provided by LESSOR shall be during LESSOR's ’s normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises promises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include includes any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's 'S expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, or any installation and/or maintenance of equipment which is necessitated by some specific aspect of LESSEE's 'S use of the leased premises shall be at LESSEE's 'S expense. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, malicious, willful, or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased leases' premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear xxxx and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE Lessee shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.

Maintenance of Premises. LESSOR will be responsible for all structural maintenance of the leased premises and for the normal daytime maintenance of all space heating and cooling equipment, sprinklers, doors, locks, plumbing, and electrical wiring, but specifically excluding damage caused by the careless, careless malicious, willful, willful or negligent acts of LESSEE or others, chemical, water or corrosion damage from any source, and maintenance of any non "building standard" leasehold improvements, . LESSEE agrees to maintain at the its expense all other aspects of the leased premises in the same condition as they are at the commencement of the term or as they may be put in during the term of this lease, normal wear and tear and damage by fire or other casualty only excepted, and whenever necessary, to replace light bulbs, plate glass and other glass therein, acknowledging that the leased premises are now in good order and the light bulbs and glass whole. LESSEE will promptly properly control or vent all solvents, degreasers, smoke, odors, etc, . and shall not cause the area surrounding the leased premises to be in anything other than a neat and clean condition, depositing all waste in appropriate receptacles. LESSEE shall be solely responsible for any damage to plumbing equipment, sanitary lines, or any other portion of the building which results from the discharge or use of any acid or corrosive substance by LESSEE. LESSEE shall not permit the leased premises to be overloaded, damaged, stripped or defaced, nor suffer any waste, and will not keep animals within the leased premises. If the leased premises include any wooden mezzanine type space, the floor capacity of such space is suitable only for office use, light storage or assembly work. If the leased premises are carpeted or partially carpeted, LESSEE will protect any carpet with plastic or masonite chair pads under any rolling chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain sufficient heat to prevent freezing of pipes or other damage. Any increase in air conditioning equipment or electrical capacity, capacity or any installation and/or or maintenance of equipment which is necessitated by some specific aspect of LESSEE's use of the leased premises shall be LESSEE's sole responsibility, at LESSEE's expenseexpense and subject to LESSOR's prior written consent. All maintenance provided by LESSOR shall be during LESSOR's normal business hours.