<div class="chunk-title">Sec. 26-102. - Pretreatment of wastewater.</div>
<div class="chunk-content">
            <p class="incr0">
               (a)
               </p>
            		
            <p class="content1">
               <span class="ital">Pretreatment facilities.</span> Users shall provide wastewater treatment as necessary to comply with this article
               and wastewater permits issued under <a href="" data-chunk-id="COOR_CH26UT_ARTIVSEUS_DIV4WADIPEAPIS_S26-132WAPE" class="section-link" data-product-id="12650">section 26-132</a> of this article and shall achieve compliance with all National Categorical Pretreatment
               Standards, local limits and the prohibitions set out in <a href="" data-chunk-id="COOR_CH26UT_ARTIVSEUS_DIV2SEUSRE_S26-96PRDIST" class="section-link" data-product-id="12650">section 26-96</a> of this article within the time limitations as specified by EPA, the state or the
               POTW director, whichever is more stringent. Any facilities necessary for compliance
               shall be provided, operated and maintained at the user's expense. Detailed plans showing
               the pretreatment facilities and operating procedures shall be submitted to the county
               for review, and shall be approved by the POTW director before construction of the
               facility. The review of such plans and operating procedures shall in no way relieve
               the user from the responsibility of modifying the facility as necessary to produce
               an effluent acceptable to the county under the provisions of this article. Any subsequent
               changes in the pretreatment facilities or method of operation shall be reported to
               and be approved by the POTW director prior to the user's initiation of the changes.
               </p>
            		
            <p class="incr0">
               (b)
               </p>
            		
            <p class="content1">
               <span class="ital">Additional pretreatment measures.</span> The POTW director may require additional measures described below when necessary
               to ensure compliance with this article and wastewater permits issued under <a href="" data-chunk-id="COOR_CH26UT_ARTIVSEUS_DIV4WADIPEAPIS_S26-132WAPE" class="section-link" data-product-id="12650">section 26-132</a> of this article:
               </p>
            		
            <p class="incr1">
               (1)
               </p>
            		
            <p class="content2">
               The POTW director may require users to restrict their discharge during peak flow periods,
               designate that certain wastewater be discharged only into specific sewers, relocate
               and/or consolidate points of discharge, separate sewage wastestreams from industrial
               wastestreams, and such other conditions as may be necessary to protect the POTW and
               determine the user's compliance with the requirements of this article.
               </p>
            		
            <p class="incr1">
               (2)
               </p>
            		
            <p class="content2">
               The POTW director may require any person discharging into the POTW to install and
               maintain, on their property and at their expense, a suitable storage and flow-control
               facility to ensure equalization of flow. A wastewater discharge permit may be issued
               solely for flow equalization.
               </p>
            		
            <p class="incr1">
               (3)
               </p>
            		
            <p class="content2">
               Users with the potential to discharge flammable substances that are not water soluble
               may be required to install and maintain an approved combustible gas detection meter.
               If the concentration of water soluble substances is great enough to be combustible,
               the user may be required to install and maintain an approved combustible gas detection
               meter.
               </p>
            		
            <p class="incr0">
               (c)
               </p>
            		
            <p class="content1">
               <span class="ital">Fats, oil and grease removal systems.</span>
               </p>
            		
            <p class="incr1">
               (1)
               </p>
            		
            <p class="content2">
               <span class="ital">When removal systems are required.</span> Certain establishments that prepare, process, or serve food shall install a removal
               system meeting approved standards that removes and collects fat, oil and grease (FOG)
               from wastewater and shall establish acceptable standard operating procedures for grease
               disposal. Such establishments include but are not limited to, grocery stores, restaurants,
               bakeries, and companies, schools, and institutions with on-site cafeterias. Establishments
               that must meet this requirement include all new establishments, all existing establishments
               with a monthly average water consumption greater than 1,000 cubic feet, and establishments
               which monitoring has shown discharge more than 200 mg/liter of fat, oil and grease.
               </p>
            		
            <p class="b2">
               Establishments subject to this section shall be grouped into the following four categories:
               </p>
            <p class="incr2">
               a.
               </p>
            		
            <p class="content3">
               Existing establishments with an outside grease trap.
               </p>
            		
            <p class="incr2">
               b.
               </p>
            		
            <p class="content3">
               Existing establishments with in-floor grease interceptor, under the following conditions:
               </p>
            		
            <p class="incr3">
               1.
               </p>
            		
            <p class="content4">
               The establishment is limited by space and cannot install an outside grease trap; and
               </p>
            		
            <p class="incr3">
               2.
               </p>
            		
            <p class="content4">
               The establishment is in compliance with the 200 mg/L FOG limit set forth herein; and
               </p>
            		
            <p class="incr3">
               3.
               </p>
            		
            <p class="content4">
               The establishment maintains a standard operating procedure regarding maintenance of
               the interceptor and proper FOG disposal.
               </p>
            		
            <p class="incr2">
               c.
               </p>
            		
            <p class="content3">
               Existing establishments with no grease trap or interceptor, under the following conditions:
               </p>
            		
            <p class="incr3">
               1.
               </p>
            		
            <p class="content4">
               Monthly water consumption is below 1,000 cubic feet; and
               </p>
            		
            <p class="incr3">
               2.
               </p>
            		
            <p class="content4">
               The establishment maintains a standard operating procedure regarding spill prevention
               and dry clean-up, including scraping, sweeping, or wiping methods; and
               </p>
            		
            <p class="incr3">
               3.
               </p>
            		
            <p class="content4">
               The establishment is in compliance with the 200 mg/L FOG limit set forth herein.
               </p>
            		
            <p class="incr2">
               d.
               </p>
            		
            <p class="content3">
               New establishments under construction, including any increase to the food service
               capacity of an existing establishment.
               </p>
            		
            <p class="incr1">
               (2)
               </p>
            		
            <p class="content2">
               <span class="ital">Requirements for new establishments under construction.</span> All new establishments subject to this section shall comply with the following:
               </p>
            		
            <p class="incr2">
               a.
               </p>
            		
            <p class="content3">
               An outside grease trap shall be installed.
               </p>
            		
            <p class="incr2">
               b.
               </p>
            		
            <p class="content3">
               A monitoring manhole shall be installed downstream of the grease trap and prior to
               joining the sanitary waste line.
               </p>
            		
            <p class="incr2">
               c.
               </p>
            		
            <p class="content3">
               The grease trap shall be plumbed to receive wastes associated with food handling and
               no toilet waste, subject to subsection <a href="" data-chunk-id="COOR_CH26UT_ARTIVSEUS_DIV2SEUSRE_S26-102PRWA" class="section-link" data-product-id="12650">26-102</a>(b)(3)c.
               </p>
            		
            <p class="b3">
               The grease trap liquid capacity shall provide for:
               </p>
            <p class="hg3-indent1">
               â€¢â€‚At least five gallons of storage per meal served;
               </p>
            <p class="hg3-indent1">
               â€¢â€‚25 gallons per 15 square feet of dining area or 25 gallons per seat, whichever is
               greater; or
               </p>
            <p class="hg3-indent1">
               â€¢â€‚A capacity as determined in accordance with the following formula:
               
               <p class="b4">
                  LC = D x GL x HR x 1.25
                  <br>
                  where:
                  
                  <p class="b5">
                     LC = grease trap liquid capacity (gallons)
                     </p>
                  
                  <p class="b5">
                     D = number of seats in dining area
                     </p>
                  
                  <p class="b5">
                     GL = gallons of wastewater per meal
                     <br>
                     (1.5 single service; 2.5 full-service)
                     </p>
                  
                  <p class="b5">
                     HR = number of hours open per day
                     </p>
                  
               
            <p class="incr2">
               d.
               </p>
            		
            <p class="content3">
               Two or more chambers shall be provided with total length-to-width ratio at least 2:1.
               Chamber inlet and outlet sanitary tees shall extend down at least 50 percent of the
               liquid depth.
               </p>
            		
            <p class="incr2">
               e.
               </p>
            		
            <p class="content3">
               Access manholes, with a minimum diameter of 24 inches, shall be provided over each
               chamber and sanitary tee. The access manholes shall extend at least to finished grade
               and be designed and maintained to prevent surface water infiltration. The manholes
               shall also have readily removable covers to facilitate inspection and grease removal.
               </p>
            		
            <p class="incr2">
               f.
               </p>
            		
            <p class="content3">
               The grease trap liquid capacity may be provided by up to two tanks in a series.
               </p>
            		
            <p class="incr2">
               g.
               </p>
            		
            <p class="content3">
               Where it has been demonstrated that a specially designed grease trap or interceptor
               will provide improved performance, an alternative design may be approved by the POTW
               director.
               </p>
            		
            <p class="incr2">
               h.
               </p>
            		
            <p class="content3">
               A minimum 1,000 gallon grease trap for all new food establishments.
               </p>
            		
            <p class="incr1">
               (3)
               </p>
            		
            <p class="content2">
               <span class="ital">Prohibited discharges into any fats, oil and grease removal system.</span> The following shall not be discharged into any fats, oil, and grease removal system,
               unless specifically authorized in writing by the POTW director:
               </p>
            		
            <p class="incr2">
               a.
               </p>
            		
            <p class="content3">
               Waste that does not contain fats, oil, grease, and that otherwise does not require
               treatment;
               </p>
            		
            <p class="incr2">
               b.
               </p>
            		
            <p class="content3">
               Wastewater from dish washing machines or wastewater with temperature exceeding 150
               degrees Fahrenheit;
               </p>
            		
            <p class="incr2">
               c.
               </p>
            		
            <p class="content3">
               Ground residue from food waste grinders and garbage disposals;
               </p>
            		
            <p class="incr2">
               d.
               </p>
            		
            <p class="content3">
               Sanitary waste;
               </p>
            		
            <p class="incr2">
               e.
               </p>
            		
            <p class="content3">
               Emulsifiers, chemicals and enzymes.
               </p>
            		
            <p class="incr1">
               (4)
               </p>
            		
            <p class="content2">
               <span class="ital">Maintenance and cleaning of system; maintenance of records.</span> All FOG removal systems shall be cleaned on at least a monthly schedule. More frequent
               cleaning may be required if the user's discharge contains more than 200 mg/L of fats,
               oil and grease. Less frequent cleaning is permitted if it can be demonstrated to the
               POTW director that the proposed cleaning schedule will result in a discharge of fats,
               oil and grease that is below 200 mg/L and there are no problems with sewer line maintenance
               as a result of the change in schedule.
               </p>
            		
            <p class="incr1">
               (5)
               </p>
            		
            <p class="content2">
               <span class="ital">Collection of fat, oil and grease; maintenance of records.</span> All users with removal systems shall contract for the removal of the fats, oil and
               grease collected from the removal system. The contract shall be available on-site
               for inspection by the POTW director or designee. The user shall require the contractor
               to complete a form provided by the POTW director indicating the ultimate disposition
               of the fat, oil and grease collected e.g., the disposal destination, such as a named
               landfill, of the removed substances and whether the fat, oil and grease are being
               reprocessed or rendered. The user shall also require the contractor to indicate on
               a form, which, if it is not the POTW director's form, shall be acceptable to the POTW
               director, each collection made from the user. Required forms shall be maintained on-site
               for a period of three years.
               </p>
            		
            <p class="incr1">
               (6)
               </p>
            		
            <p class="content2">
               <span class="ital">Monitoring of discharge.</span> In the event of noncompliance of this section, the POTW director or designee may
               require that any user monitor and test their discharge for fat, oil and grease. All
               monitoring results shall be provided to the POTW director. Approved EPA and NC State
               guidelines shall be followed for sample collection, handling and analysis. A NC certified
               laboratory must perform the analysis. As a condition of discharging to the system,
               all users may be monitored by the POTW director or designee without prior notice.
               </p>
            		
            <p class="incr1">
               (7)
               </p>
            		
            <p class="content2">
               <span class="ital">Exceptions.</span> Exceptions from this section may be made in writing by the POTW director if it can
               be shown that an existing establishment cannot site outside removal systems without
               extreme hardship because of lack of available adjacent land or other similar circumstances.
               Such application for an exemption shall be made to the POTW director on or before
               September 1, 2008.
               </p>
            		
            <p class="incr1">
               (8)
               </p>
            		
            <p class="content2">
               <span class="ital">Noncompliance.</span> Any facility not in compliance with the 200 mg/L FOG limit set forth herein, and
               not exempted under subsection (7) above, shall retrofit or install a sufficient grease
               trap and implement adequate cleaning schedule to meet the applicable standards set
               forth herein.
               </p>
            		
            <p class="incr1">
               (9)
               </p>
            		
            <p class="content2">
               <span class="ital">Reporting.</span> Facilities with a grease trap shall provide a monthly report of the grease trap maintenance
               to the POTW director, postmarked no later than the last calendar day of the month
               following the completed reporting period.
               </p>
            		
            <p class="incr0">
               (d)
               </p>
            		
            <p class="content1">
               <span class="ital">Pretreatment projects.</span> Any pretreatment projects submitted and accepted, prior to this article becoming
               effective, shall be considered in full force and not requiring modification to meet
               differing requirements of this article, unless required to meet more stringent effluent
               limitations imposed by a change in the permit. Any pretreatment project submitted,
               but not approved prior to this article becoming effective shall not require additional
               review or modification before approval in order to meet the requirements of this article.
               </p>
            		
            <p class="historynote0">
               (Ord. of 9-26-94, Â§ 2.7; Ord. of 4-14-08, Â§Â§ 9â€”11; Ord. of 11-26-12, Â§ 10)
               </p></div>