HomeMy WebLinkAboutALT_MAYFLOWERparkDR-C5.1-SITE DETAILSCLIENT REVIEW4-23-2019C5.1
1903-016KEELER-WEBB ASSOCIATESPROPOSED OFFICE / WAREHOUSE10650 N. BENNETT PARKWAY, SUITE 200ZIONSVILLE, IN 46077 (317) 253-1251SITE DETAILS
CONCRETE WASHOUT - LINED CONTAINER
CONTAINER WITH
WATERPROOF (10 MIL MIN.)
PLASTIC LINER SUPPLIED BY
APPROVED HAULER
SIGN TO INDICATE THE
LOCATION OF THE
CONCRETE WASHOUT
AREA
NO CURED CONCRETE OR
RUBBLE IS ALLOWED IN
CWO CONTAINER
9801 Mayflower Park DriveCarmel, Indiana 46032STORM WATER TREATMENT DEVICE
1.1 DESCRIPTION
A.Scope
The Contractor shall furnish all labor, equipment and materials necessary to install the storm water treatment device(s) (SWTD) and appurtenances specified in the Drawings and these specifications.
B.Related Sections
Section 02240: Dewatering
Section 02260: Excavation Support and Protection
Section 02315: Excavation and Fill
Section 02340: Soil Stabilization
1.2 QUALITY ASSURANCES
A.Inspection
All components shall be subject to inspection by the engineer at the place of manufacture and/or installation. All components are subject to being rejected or identified for repair if the quality of materials and
manufacturing do not comply with the requirements of this specification. Components which have been identified as defective may be subject for repair where final acceptance of the component is contingent
on the discretion of the Engineer.
B.Warranty
The manufacturer shall guarantee the SWTD components against all manufacturer originated defects in materials or workmanship for a period of twelve (12) months from the date the components are
delivered to the owner for installation. The manufacturer shall upon its determination repair, correct or replace any manufacturer originated defects advised in writing to the manufacturer within the referenced
warranty period. The use of SWTD components shall be limited to the application for which it was specifically designed.
C.Manufacturer's Performance Certificate
The SWTD manufacturer shall submit to the Engineer of Record a “Manufacturer's Performance Certification” certifying that each SWTD is capable of achieving the specified removal efficiencies listed in
these specifications. The certification shall be supported by independent third-party research.
1.3 SUBMITTALS
A.Shop Drawings
The contractor shall prepare and submit shop drawings in accordance with the contract documents. The shop drawings shall detail horizontal and vertical dimensioning as well as joint type and locations.
1.4 PRODUCT SUBMITTALS
No product substitutions shall be accepted unless submitted 10 days prior to project bid date, or as directed by the engineer of record. Submissions for substitutions require review and approval by the
Engineer of Record, for hydraulic performance, impact to project designs, equivalent treatment performance, and any required project plan and report (hydrology/hydraulic, water quality, stormwater pollution)
modifications that would be required by the approving jurisdictions/agencies. Contractor to coordinate with the Engineer of Record any applicable modifications to the project estimates of cost, bonding
amount determinations, plan check fees for changes to approved documents, and/or any other regulatory requirements resulting from product substitutions.
2.1 MATERIALS AND DESIGN
A.Housing unit of stormwater treatment device shall be constructed of pre-cast or cast-in-place concrete, no exceptions. Precast concrete components shall conform to applicable sections of ASTM C
478, ASTM C 857 and ASTM C 858 and the following:
1.Concrete shall achieve a minimum 28-day compressive strength of 4,000 pounds per square-inch (psi);
2.Unless otherwise noted, the precast concrete sections shall be designed to withstand lateral earth and AASHTO H-20 traffic loads;
3.Cement shall be Type III Portland Cement conforming to ASTM C 150;
4.Aggregates shall conform to ASTM C 33;
5.Reinforcing steel shall be deformed billet-steel bars, welded steel wire or deformed welded steel wire conforming to ASTM A 615, A 185, or A 497.
6.Joints shall be sealed with preformed joint sealing compound conforming to ASTM C 990.
7.Shipping of components shall not be initiated until a minimum compressive strength of 4,000 psi is attained or five (5) calendar days after fabrication has expired, whichever occurs first.
B.Internal Components and appurtenances shall conform to the following:
1.Screen and support structure shall be manufactured of Type 316 and 316L stainless steel conforming to ASTM F 1267-01;
2.Hardware shall be manufactured of Type 316 stainless steel conforming to ASTM A 320;
3.Fiberglass components shall conform to the National Bureau of Standards PS-15 and coated with an isophalic polyester gelcoat and
4.Access system(s) conform to the following:
a.Manhole castings shall be designed to withstand AASHTO H-20 loadings and manufactured of cast-iron conforming to ASTM A 48 Class 30.
2.2 PERFORMANCE
A.REMOVAL EFFICIENCIES
1.The SWTD shall be sized to either achieve an 80 percent average annual reduction in the total suspended solid load or treat a flow rate designated by the jurisdiction in which the project is located.
2.The SWTD shall be capable of capturing and retaining 100 percent of pollutants greater than or equal to 2.4 millimeters (mm) regardless of the pollutant's specific gravity (i.e.: floatable and neutrally
buoyant materials) for flows up to the device's rated-treatment capacity. The SWTD shall be designed to retain all previously captured pollutants addressed by this subsection under all flow conditions. The
CDS unit shall be fitted with a 2400 micron or stainless steel screen.
3.The SWTD shall be capable of capturing and retaining total petroleum hydrocarbons. The SWTD shall be capable of achieving a removal efficiency of 92 and 78 percent when the device is operating at
25 and 50 percent of its rated-treatment capacity (125 micron flow rates listed in table 1.). These removal efficiencies shall be based on independent third-party research for influent oil concentrations
representative of storm water runoff (20 ± 5 mg/L). The SWTD shall be greater than 99 percent effective in controlling dry-weather accidental oil spills.
B.HYDRAULIC CAPACITY
1.The SWTD shall provide verified treatment performance up to and including the rated treatment capacity of the selected unit listed in Table 1. The treatment performance shall be verified through a
nationally or regionally accredited testing protocol.
2.The SWTD shall convey the flow from the peak storm event of the drainage network, in accordance with required hydraulic upstream conditions as defined by the Engineer. If a substitute SWTD is
proposed, supporting documentation shall be submitted that demonstrates equal or better upstream hydraulic conditions compared to that specified herein. This documentation shall be signed and sealed by a
Professional Engineer registered in the State of the work. All costs associated with preparing and certifying this documentation shall be born solely by the Contractor.
C.STORAGE CAPACITY
1.The SWTD shall be designed with a sump chamber for the storage of captured sediments and other negatively buoyant pollutants in between maintenance cycles. The minimum storage capacity
provided by the sump chamber shall be in accordance with the volume listed in Table 1. The boundaries of the sump chamber shall be limited to that which do not degrade the SWTD's treatment efficiency as
captured pollutants accumulate. The sump chamber shall be separate from the treatment processing portion(s) of the SWTD to minimize the probability of fine particle resuspension. In order to not restrict the
Owner's ability to maintain the SWTD, the minimum dimension providing access from the ground surface to the sump chamber shall be 20 inches in diameter.
2.The SWTD shall be designed to capture and retain Total Petroleum Hydrocarbons generated by wet-weather flow and dry-weather gross spills and have a capacity listed in Table 1 of the required unit.
2.3 MANUFACTURER
The manufacturer of the SWTD shall be one that is regularly engaged in the engineering design and production of systems deployed for the treatment of storm water runoff for at least five (5) years and which
have a history of successful production, acceptable to the Engineer. In accordance with the Drawings, the SWTD(s) shall be a CDS® device manufactured by:
CONTECH Engineered Solutions, LLC
9025 Centre Pointe Drive, Suite 400
West Chester, OH 45069
(800)338-1122
www.ContechES.com
3.1 HANDLING AND STORAGE
1.The contractor shall exercise care in the storage and handling of the SWTD components prior to and during installation. Any repair or replacement costs associated with events occurring after delivery is
accepted and unloading has commenced shall be borne by the contractor.
3.2 INSTALLATION
1.The SWTD shall be installed in accordance with the manufacturer's recommendations and related sections of the contract documents. The manufacturer shall provide the contractor installation
instructions and offer onsite guidance during the important stages of the installation as identified by the manufacturer at no additional expense. A minimum of 72 hours of notice shall be provided to the
manufacturer prior to their performance of the services included under this subsection.
2.The contractor shall fill all voids associated with lifting provisions provided by the manufacturer. These voids shall be filled with non-shrinking grout providing a finished surface consistent with adjacent
surfaces. The contractor shall trim all protruding lifting provisions flush with the adjacent concrete surface in a manner, which leaves no sharp points or edges.
3.The contractor shall removal all loose material and pooling water from the SWTD prior to the transfer of operational responsibility to the Owner.
CDS Model Treatment Capacity Minimum Sump Minimum Oil
cfs Storage Capacity Storage Capacity
(yd3)(gal)
CDS3030-C-6 3.0 2.1 205 CLIENT REVIEW5-08-20199-28-20193
ENGINEERING REVISIONSTAC REVIEW COMMENTS7-12-201919-02-20192ENGINEERING REVISIONS