SECTION 252:626-3-7. Plans and specifications

(a)   Plans and specifications must address the entire project pursuant to the approved engineering report as required in OAC 252:626-3-2. If the applicant plans to phase construction, the approved engineering report shall contain a description of each phase of the project and the sequence of construction to ensure continuity of the system and that adequate capacity will be available for each phase.

(b)   All detailed plans must be legible and drawn to a suitable scale. Plans for modifications or extensions to existing systems or plants must indicate clearly the connections or relation. Include the following:

(1)   A general layout sheet that includes:

(A)   title and date,

(B)   name of municipality, rural water district, or other entity or person who owns the system,

(C)   area or institution to be served,

(D)   scale, in feet,

(E)   north point,

(F)   data used,

(G)   boundaries of the municipality, rural water district, or area to be served,

(H)   name, telephone number, and address of the designing engineer,

(I)   the Engineer's seal and signature,

(J)   location and size of existing water mains, and

(K)   location and nature of existing water works structures and appurtenances affecting the proposed improvements.

(2)   Detailed sheets that include:

(A)   stream crossings with profiles of the stream bed showing the normal, high and low water levels,

(B)   profile sheets with a horizontal scale of not more than 100 feet to the inch and a vertical scale of not more than 10 feet to the inch. Both scales must be clearly indicated. A smaller horizontal scale may be used for rural water distribution systems, but in no case smaller than 500 feet to the inch. Plans with contour intervals of 10 feet or less may be provided in lieu of profiles,

(C)   dimensional boundaries of property intended for ground water development. Show location with respect to known references such as street intersections or section lines,

(D)   topography and arrangement of existing and proposed wells or structures, with contour intervals not greater than 2 feet. Contour intervals of greater than 2 feet can be used for water line plans. Contour intervals cannot be greater than 10 feet,

(E)   elevations of the highest known flood level, floor of the structure, upper terminal of protective casings and outside surrounding grade, using Federal Emergency Management Agency (FEMA) or equivalent elevations as reference,

(F)   drawings of well construction, showing diameter and depth of drill holes, casing and liner diameters and depths, grouting depths, elevations and designation of geological formations, water levels and other details to describe the proposed well completely,

(G)   location of all existing and potential sources of pollution within 300 feet of the raw water source and within 100 feet of underground treated water storage facilities,

(H)   size, length, and identity of sewers, drains, and water mains near the proposed water works,

(I)   schematic flow diagrams and hydraulic profiles showing the flow through plant units,

(J)   piping in sufficient detail to show flow through the plant, including waste lines, and locations of all sampling taps,

(K)   locations of all chemical feeding equipment and points of chemical application, sanitary and other facilities, including but not limited to lavatories, showers, toilets, and lockers,

(L)   all appurtenances, specific structures, equipment, water treatment plant waste disposal units and points of discharge,

(M)   locations, dimensions and elevations of all proposed and existing plant units,

(N)   adequate description of any features not otherwise covered by the specifications,

(O)   location of all valves, and

(P)   location of all storage tanks, including the capacity of the tanks and top and bottom elevations.

(c)   Specifications must:

(1)   supply complete, detailed, technical specifications for all parts of the proposed project, including a program for keeping existing water works facilities in operation during construction of additional facilities,

(2)   cover in detail materials to be used, methods of making or drilling well(s), dimensions, depth, straightness of the hole, required logs, tests, records, locations of water formations, grouting or cementing, shooting and final testing of the well(s), for ground water systems,

(3)   provide supporting data regarding reliability of operation, maintenance and operator training, if automatic equipment is proposed. Provide manual override for any automatic controls;

(4)   be written so that a representative of the manufacturer will check the installation and supervise initial operation of the major items of mechanical equipment and pumps,

(5)   provide complete sets of all special tools and accessories required for operation and maintenance, together with parts lists, and operation and maintenance manuals for each piece of mechanical equipment, and

(6)   provide for an Operation and Maintenance (O & M) Manual for the operation and maintenance of the public water supply system. The O & M Manual shall include at a minimum:

(A)   System Treatment Requirements;

(B)   Description, Operation and Control of the Water Treatment Plant;

(C)   Control of Unit Processes;

(D)   Laboratory Testing;

(E)   Common Operating Problems;

(F)   Start-Up Testing and Procedures;

(G)   Standard Operating Procedures;

(H)   Alternative and Emergency Operations;

(I)   Emergency Shutdown Operations and Emergency Response;

(J)   Records Control and Retention;

(K)   Safety;

(L)   Public Water Supply System Maintenance Records;

(M)   Stormroom and Inventory System; and

(N)   Utilities.

(d)   File as-built plans (plans of record) which identify any changes to the DEQ approved plans and specifications and an Engineer's certification that the construction was completed according to the requirements of this Chapter within 6 months after the project is completed.

[Source: Added at 18 Ok Reg 1612, eff 6-1-01; Amended at 25 Ok Reg 2304, eff 7-11-08]