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Home My WebLink Aboutbocc.con.amended.094.2011B Rev. 08-30-//jls COUNTY CLERK'S CONTRACT COVERSHEET CONTRACT #: 094-2011 B , ORIGINATING DEPARTMEIVT: Airport PROCUREMENT OFFICER: Dustin Havel PHONE#: 4292855 PROJECT NAME: Enviromental Services& Considting CONTRACTOR: Tetra Tech Inc. DOLLAR AMOUNT: $59.235.00 for 2013-2016 LINE ITEM# 404.25.00000.82085 CONTRACT EXECUTION DATE: 7/29/2013 CONTRACT END DATE: 9/30/2016 AUTOMATIC RENEWAL: ❑ YES � NO TERM: ❑ 60CC AGENDA ITEM (Grants; IGA) ❑ STAFF AUTHORIZGD SIGNATURE (Requires BOCC Signature) (Per Revised Procurement Code 7/2005) � OVER$50,000(Requires Section Leader&County Manager's Signature) ✓ CHECK PROCUREMENT TYPE: ❑ None ❑ Informal � Formal ❑ Sole Source ❑ Emergency ❑ Outside Agency/State Bid ❑ Compliance with C.R.S. 8-17-5-101, 102 as amended (Immigration Form) ❑ Exempt ❑ ConVact Renewal / G� �J��,,ApeJ y�L. ✓ CHECK COIVTRACT TYPE: �� uV � Services/Maintenance ❑ Employment ❑ License/Use ❑ In[ergovernmental Agreement(Resolution Required) ❑ Lease ❑ Non-Profit ❑ Construction ❑ Quasi-Pub{ic(e.g.-AVH) ❑ Goods, Equipment, Supplies ❑ Grant Agreements(Notify Finance& Resolution Required) ❑ Other(e.g. revenue) ❑ Change OrdedContract Amendment (C/O: 10'%ur$25K whichever is thc lesser must have Count}'Manager signature) All Contracts should be proofed and all eshibits and noticcs must be attached for the following: ✓ � No Pages Missing ✓� All Other Blanks Filled In ✓ � If Page Left Intentionally Blank—Note on Page ✓� All Exhibits Attached ✓ � Page numbered consecutively ✓❑ All Legal Descriptions attached (ifapplicqble) ✓ � All Originaf Signatures Affixed ✓Q Notice of Award/Notice to Proceed Attached ('fapplicable) ✓ � All Dates Filled In ✓❑ Warranty(if applicable) ✓ � Special Instructions for Finance Department• Increase is over term of contract not 1 year. ✓ � Authorized Procurement Officer's Name: Dustin Havel BY CHECKING ABOVE AND ENTERING NAME,THE AUTHORIZED STAFF PERSON INDICATES THAT THE ATTACHED DOCUMENT HAS BEEN PROOFED AND READY FOR 5CANNING. NOTE: CLERK'S OFFICE W ILL KEEP ORIGINAL DOCUMENTS ]N COMPLIANCE W]TH COLORADO STATE ARCHNES RETAINAGE SCHEDULE. ALL ATTACHMENTS MU5T BE WITH THIS CHECKLIST! Contract#094201 l Rev. 83/.11 jaa/js Budget Linc Item#404.25.00000.82085 �iTKIN CoU1�T� c�,cv CHANGE ORDER/CONTRACT AMENDMENT Change Order Number. 094-2011B OWNER: Pitkin County Aspen, Colorado 81611 CONTRACTOR: Tetra Tech Inc. � 7222 Commerce Center Drive, Suite 260 Colorado Springs, CO 80919 '. The Contract for Provision of Services — Environmental Services & Consulting in Support of the Stormwater Management Plan of the Aspen/Pitkin County Airport — Contract 094-2011 (the "AgreemenP') dated 09-27-2011 between the Board of County Commissioners of Pitkin Counry (the "County") a�d Tetra Tech Ina (the "Contractor"), is hereby amended as follows: Description of Chanae: Tetra Tech will perform quarterly visual and benchmark monitoring of 7 stormwater outfalls at the Aspen/Pitkin County Airport as outlined in the attached exhibit This is an increase per the new Stormwater Management Plan (SWMP) requirements. Reason for ChanQe: The airport's SWMP was modified in accordance with the Colorado Department of Public Health and Environment's (CDPHE) General Permit Requireme�ts. This change increased the number of defined outfalls and �unount of visual and benchmark monitoring required. Original Contract Price $ 79,206 over a 5 year period Net Increase/Decrease in Contract Price (this change order) $ 59,235 *Total Adjusted Contract Price (i�cluding this change order) $ 168,405.73 (including 094-20llA) In all other respects the Agreement is in full force and effect dud remains unchanged by this ndm t � 19 July 2013 Contr ctor Date �' �Z �-ZOI� Procurement Of6cer Date � `7 -��'I- �"72 County anager Date � � TETRATECH www.tetratech.com July 19, 2013 Mr. Dustin Havel, A.A.E., ACE Aspen/Pitkin County Airport 0233 E. Airport Road Aspen, Colorado 8161 I Subject: Aspen/Pitkin County Airport CDPFIE General Permit COR9000000 Quarterly Storm Water Sampling (Contract #094-2011 Modification #2) Tetra Tech Ina (Tetra Tech) is pleased to provide the Aspen/Pitkin County Airport with this scope of wark and cost estimate to provide quarterly visual monitoring, benchmark monitoring and reporting in accordance with the Colorado Department of Public Health and Environment's (CDPHE) Storm Water Discharges Associated with NornExtractive Industrial Activity CDPS General Permit COR900000. Upon acceptance of this proposal, Tetra Tech shall begin quarterly monitoring of the Aspen/Pitkin County stormwater outfalls as described in the following paragraphs. Scone of Work Ta.rk 6: Quarter[y Stormwater Mnnitoring Tetra Tech will perform quarterly visual and benchmark monitoring of 7 stormwater outfalls at the Aspen/Pitkin Counry Airport to include the fbllowing: l. Visual Monitoring - A grab sample will be collected from each stormwater outfall during a qualifying precipitation event. Each grab sample will be assessed for presence of the following water quality characteristics: color, odor, clarity, floating solids, settled solids, suspended solids, foam, oil sheen, and any other obvious indicators of stormwater pollution. The results of the visual monitoring will be recorded using forms prescribed in the Aspen/Pitkin County Airport's Storm Water Management Plan. 2. Benchmark Monitoring - A grab sample will be collected from each stqrmwater outfall during a qualifying precipitation event. Each grab sample will be sent to an approved analytical laboratory and analyzed for Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), and Oils and Grease. The analytical results will be reviewed to ensure all laboratory quality control requiremenfs are met. The results of the benchmark monitoring will be summarized on the state required Discharge Monitoring Report form and submitted to Aspen/Pitkin County Airport for signature. Tetra Tech will complete the draft Discharge Monitoring Reports each quarter as required by the General Permit. Tetra Tech will perform three sampling events for contract year 2 and four sampling events during each of the remaining contract years. � Costs Tetra Tech estimates that the costs to complete the scope of work described above will not exceed $69,290. Table I presents Tetra Tech's proposed cost, broken out by contract year, to complete the scope of work. Work will be completed on a time and materials basis as required by the basic contract and to account for variations in stormwater discharges. Table 1 Cost Pro osal for Quarterl Stormwater Monitorin Contract Year 2 Contract Year 3 Contract Year 4 Contract Year 5 Sept 2012—Sept Sept 2013 —Sept Sept 2014—Sept Sept 2015 — Sept 2013 2014 2015 2016 Labor $8,588 $11,852 $12,266 $12,696 Analytical $�,995 $2,660 $2,660 $2,660 Fees Other Direct Costs (i.e. shipping, $2 �g3 $3,710 $3,710 $3,710 mileage, field suppl i es) Estimated Cost $I 3,366 $I 8,222 $18,636 $I 9,066 Notto Exceed Task 2 of the current basic contract indudes one stormwater monitoring event per year at three stormwater outfalls. Analytical sampling of these three outfalls includes glycol, BOD, COD, oil and grease, and total suspended solids. If this modification is approved, the work activities proposed above would replace the stormwater monitoring activities included as part of Task 2 in the basic contract. The other requirements ofTask 2, including biannual facility inspection and annual report should remain and Tetra Tech plans to continue completing two inspections per year and submit the draft annual report to Aspen/Pitkin County Airport stafC Table 2 summarizes the current pricing of Task 2 and proposed cost reductions for Task 2. As shown in Table 2, Tetra Tech proposes to reduce Task 2 cost by $10,055 over the remaining contract. 3 Table 2 Cost Pro osal to Reduce Task 2 Contract Year 2 Contract Year 3 Contract Year 4 Contract Year 5 Sept 2012—Sept Sept 2013 — Sept Sept 2014— Sept Sept 2015—Sept 2013 2014 2015 2016 Current Contract $12,196 $12,588 $12,958 Amount Current Not Applicable, Stormwater Monitoring monitoring $3,262 $3,362 $3,431 Cost (to be completed Oct reduced) Z��2 Proposed modified cost $8,934 $9,226 $9,527 for Task 2 Tetra Tech's proposed not to exceed cost for this contract modification is $59,235. Schedule Tetra Tech will commence work immediately upon authorization. Tetra Tech will coordinate with Aspen/Pitkin County Airport staff to accomplished monitoring activities, particularly accessing restricted areas of the Aspen/Pitkin County Airport. Tetra Tech appreciates the oppoRunity to provide you with our services. If you have any questions; comments or require further information, please feel free to call me at(719) 685-6585. Sincerely, � .��.. ��w- Benjamin C. Recker, P.E., LEED AP Environmental Gngineer Project Manager �